^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /* -*- mode: c; c-basic-offset: 8 -*- */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) /* NCR (or Symbios) 53c700 and 53c700-66 Driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright (C) 2001 by James.Bottomley@HansenPartnership.com
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) **-----------------------------------------------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) **
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) **
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) **-----------------------------------------------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) /* Notes:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * This driver is designed exclusively for these chips (virtually the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * earliest of the scripts engine chips). They need their own drivers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * because they are missing so many of the scripts and snazzy register
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * features of their elder brothers (the 710, 720 and 770).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * The 700 is the lowliest of the line, it can only do async SCSI.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) * The 700-66 can at least do synchronous SCSI up to 10MHz.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) * The 700 chip has no host bus interface logic of its own. However,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) * it is usually mapped to a location with well defined register
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) * offsets. Therefore, if you can determine the base address and the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) * irq your board incorporating this chip uses, you can probably use
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * this driver to run it (although you'll probably have to write a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) * minimal wrapper for the purpose---see the NCR_D700 driver for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) * details about how to do this).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) * TODO List:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) * 1. Better statistics in the proc fs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) * 2. Implement message queue (queues SCSI messages like commands) and make
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) * the abort and device reset functions use them.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) * */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) /* CHANGELOG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) * Version 2.8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) * Fixed bad bug affecting tag starvation processing (previously the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) * driver would hang the system if too many tags starved. Also fixed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) * bad bug having to do with 10 byte command processing and REQUEST
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) * SENSE (the command would loop forever getting a transfer length
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) * mismatch in the CMD phase).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) * Version 2.7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) * Fixed scripts problem which caused certain devices (notably CDRWs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) * to hang on initial INQUIRY. Updated NCR_700_readl/writel to use
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) * __raw_readl/writel for parisc compatibility (Thomas
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) * Bogendoerfer). Added missing SCp->request_bufflen initialisation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) * for sense requests (Ryan Bradetich).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) * Version 2.6
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) * Following test of the 64 bit parisc kernel by Richard Hirst,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) * several problems have now been corrected. Also adds support for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) * consistent memory allocation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) * Version 2.5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) * More Compatibility changes for 710 (now actually works). Enhanced
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) * support for odd clock speeds which constrain SDTR negotiations.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) * correct cacheline separation for scsi messages and status for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) * incoherent architectures. Use of the pci mapping functions on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) * buffers to begin support for 64 bit drivers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) * Version 2.4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) * Added support for the 53c710 chip (in 53c700 emulation mode only---no
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) * special 53c710 instructions or registers are used).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) * Version 2.3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) * More endianness/cache coherency changes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) * Better bad device handling (handles devices lying about tag
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) * queueing support and devices which fail to provide sense data on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) * contingent allegiance conditions)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) * Many thanks to Richard Hirst <rhirst@linuxcare.com> for patiently
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) * debugging this driver on the parisc architecture and suggesting
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) * many improvements and bug fixes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) * Thanks also go to Linuxcare Inc. for providing several PARISC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) * machines for me to debug the driver on.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) * Version 2.2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) * Made the driver mem or io mapped; added endian invariance; added
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) * dma cache flushing operations for architectures which need it;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) * added support for more varied clocking speeds.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) * Version 2.1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) * Initial modularisation from the D700. See NCR_D700.c for the rest of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) * the changelog.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) * */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) #define NCR_700_VERSION "2.8"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) #include <linux/ioport.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) #include <linux/spinlock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) #include <linux/completion.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) #include <linux/proc_fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) #include <linux/blkdev.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) #include <linux/pgtable.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) #include <asm/dma.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) #include <asm/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) #include <asm/byteorder.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) #include <scsi/scsi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) #include <scsi/scsi_cmnd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) #include <scsi/scsi_dbg.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) #include <scsi/scsi_eh.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) #include <scsi/scsi_host.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) #include <scsi/scsi_tcq.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) #include <scsi/scsi_transport.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) #include <scsi/scsi_transport_spi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) #include "53c700.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) /* NOTE: For 64 bit drivers there are points in the code where we use
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) * a non dereferenceable pointer to point to a structure in dma-able
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) * memory (which is 32 bits) so that we can use all of the structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) * operations but take the address at the end. This macro allows us
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) * to truncate the 64 bit pointer down to 32 bits without the compiler
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) * complaining */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) #define to32bit(x) ((__u32)((unsigned long)(x)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) #ifdef NCR_700_DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) #define STATIC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) #define STATIC static
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) MODULE_AUTHOR("James Bottomley");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) MODULE_DESCRIPTION("53c700 and 53c700-66 Driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) /* This is the script */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) #include "53c700_d.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) STATIC int NCR_700_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) STATIC int NCR_700_abort(struct scsi_cmnd * SCpnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) STATIC int NCR_700_host_reset(struct scsi_cmnd * SCpnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) STATIC void NCR_700_chip_setup(struct Scsi_Host *host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) STATIC void NCR_700_chip_reset(struct Scsi_Host *host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) STATIC int NCR_700_slave_alloc(struct scsi_device *SDpnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) STATIC int NCR_700_slave_configure(struct scsi_device *SDpnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) STATIC void NCR_700_slave_destroy(struct scsi_device *SDpnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) static int NCR_700_change_queue_depth(struct scsi_device *SDpnt, int depth);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) STATIC struct device_attribute *NCR_700_dev_attrs[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) STATIC struct scsi_transport_template *NCR_700_transport_template = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) static char *NCR_700_phase[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) "",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) "after selection",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) "before command phase",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) "after command phase",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) "after status phase",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) "after data in phase",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) "after data out phase",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) "during data phase",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) static char *NCR_700_condition[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) "",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) "NOT MSG_OUT",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) "UNEXPECTED PHASE",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) "NOT MSG_IN",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) "UNEXPECTED MSG",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) "MSG_IN",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) "SDTR_MSG RECEIVED",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) "REJECT_MSG RECEIVED",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) "DISCONNECT_MSG RECEIVED",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) "MSG_OUT",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) "DATA_IN",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) static char *NCR_700_fatal_messages[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) "unexpected message after reselection",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) "still MSG_OUT after message injection",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) "not MSG_IN after selection",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) "Illegal message length received",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) static char *NCR_700_SBCL_bits[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) "IO ",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) "CD ",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) "MSG ",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) "ATN ",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) "SEL ",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) "BSY ",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) "ACK ",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) "REQ ",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) static char *NCR_700_SBCL_to_phase[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) "DATA_OUT",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) "DATA_IN",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) "CMD_OUT",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) "STATE",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) "ILLEGAL PHASE",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) "ILLEGAL PHASE",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) "MSG OUT",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) "MSG IN",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) /* This translates the SDTR message offset and period to a value
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) * which can be loaded into the SXFER_REG.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) * NOTE: According to SCSI-2, the true transfer period (in ns) is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) * actually four times this period value */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) static inline __u8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) NCR_700_offset_period_to_sxfer(struct NCR_700_Host_Parameters *hostdata,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) __u8 offset, __u8 period)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) int XFERP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) __u8 min_xferp = (hostdata->chip710
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) ? NCR_710_MIN_XFERP : NCR_700_MIN_XFERP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) __u8 max_offset = (hostdata->chip710
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) ? NCR_710_MAX_OFFSET : NCR_700_MAX_OFFSET);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) if(offset == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) if(period < hostdata->min_period) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) printk(KERN_WARNING "53c700: Period %dns is less than this chip's minimum, setting to %d\n", period*4, NCR_700_MIN_PERIOD*4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) period = hostdata->min_period;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) XFERP = (period*4 * hostdata->sync_clock)/1000 - 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) if(offset > max_offset) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) printk(KERN_WARNING "53c700: Offset %d exceeds chip maximum, setting to %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) offset, max_offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) offset = max_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) if(XFERP < min_xferp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) XFERP = min_xferp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) return (offset & 0x0f) | (XFERP & 0x07)<<4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) static inline __u8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) NCR_700_get_SXFER(struct scsi_device *SDp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) struct NCR_700_Host_Parameters *hostdata =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) (struct NCR_700_Host_Parameters *)SDp->host->hostdata[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) return NCR_700_offset_period_to_sxfer(hostdata,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) spi_offset(SDp->sdev_target),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) spi_period(SDp->sdev_target));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) static inline dma_addr_t virt_to_dma(struct NCR_700_Host_Parameters *h, void *p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) return h->pScript + ((uintptr_t)p - (uintptr_t)h->script);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) static inline void dma_sync_to_dev(struct NCR_700_Host_Parameters *h,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) void *addr, size_t size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) if (h->noncoherent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) dma_sync_single_for_device(h->dev, virt_to_dma(h, addr),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) size, DMA_BIDIRECTIONAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) static inline void dma_sync_from_dev(struct NCR_700_Host_Parameters *h,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) void *addr, size_t size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) if (h->noncoherent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) dma_sync_single_for_device(h->dev, virt_to_dma(h, addr), size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) DMA_BIDIRECTIONAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) struct Scsi_Host *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) NCR_700_detect(struct scsi_host_template *tpnt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) struct NCR_700_Host_Parameters *hostdata, struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) dma_addr_t pScript, pSlots;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) __u8 *memory;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) __u32 *script;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) struct Scsi_Host *host;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) static int banner = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) int j;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) if(tpnt->sdev_attrs == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) tpnt->sdev_attrs = NCR_700_dev_attrs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) memory = dma_alloc_coherent(dev, TOTAL_MEM_SIZE, &pScript, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) if (!memory) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) hostdata->noncoherent = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) memory = dma_alloc_noncoherent(dev, TOTAL_MEM_SIZE, &pScript,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) DMA_BIDIRECTIONAL, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) if (!memory) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) printk(KERN_ERR "53c700: Failed to allocate memory for driver, detaching\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) script = (__u32 *)memory;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) hostdata->msgin = memory + MSGIN_OFFSET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) hostdata->msgout = memory + MSGOUT_OFFSET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) hostdata->status = memory + STATUS_OFFSET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) hostdata->slots = (struct NCR_700_command_slot *)(memory + SLOTS_OFFSET);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) hostdata->dev = dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) pSlots = pScript + SLOTS_OFFSET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) /* Fill in the missing routines from the host template */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) tpnt->queuecommand = NCR_700_queuecommand;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) tpnt->eh_abort_handler = NCR_700_abort;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) tpnt->eh_host_reset_handler = NCR_700_host_reset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) tpnt->can_queue = NCR_700_COMMAND_SLOTS_PER_HOST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) tpnt->sg_tablesize = NCR_700_SG_SEGMENTS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) tpnt->cmd_per_lun = NCR_700_CMD_PER_LUN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) tpnt->slave_configure = NCR_700_slave_configure;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) tpnt->slave_destroy = NCR_700_slave_destroy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) tpnt->slave_alloc = NCR_700_slave_alloc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) tpnt->change_queue_depth = NCR_700_change_queue_depth;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) if(tpnt->name == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) tpnt->name = "53c700";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) if(tpnt->proc_name == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) tpnt->proc_name = "53c700";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) host = scsi_host_alloc(tpnt, 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) if (!host)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) memset(hostdata->slots, 0, sizeof(struct NCR_700_command_slot)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) * NCR_700_COMMAND_SLOTS_PER_HOST);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) for (j = 0; j < NCR_700_COMMAND_SLOTS_PER_HOST; j++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) dma_addr_t offset = (dma_addr_t)((unsigned long)&hostdata->slots[j].SG[0]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) - (unsigned long)&hostdata->slots[0].SG[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) hostdata->slots[j].pSG = (struct NCR_700_SG_List *)((unsigned long)(pSlots + offset));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) if(j == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) hostdata->free_list = &hostdata->slots[j];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) hostdata->slots[j-1].ITL_forw = &hostdata->slots[j];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) hostdata->slots[j].state = NCR_700_SLOT_FREE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) for (j = 0; j < ARRAY_SIZE(SCRIPT); j++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) script[j] = bS_to_host(SCRIPT[j]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) /* adjust all labels to be bus physical */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) for (j = 0; j < PATCHES; j++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) script[LABELPATCHES[j]] = bS_to_host(pScript + SCRIPT[LABELPATCHES[j]]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) /* now patch up fixed addresses. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) script_patch_32(hostdata, script, MessageLocation,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) pScript + MSGOUT_OFFSET);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) script_patch_32(hostdata, script, StatusAddress,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) pScript + STATUS_OFFSET);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) script_patch_32(hostdata, script, ReceiveMsgAddress,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) pScript + MSGIN_OFFSET);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) hostdata->script = script;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) hostdata->pScript = pScript;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) dma_sync_single_for_device(hostdata->dev, pScript, sizeof(SCRIPT), DMA_TO_DEVICE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) hostdata->state = NCR_700_HOST_FREE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) hostdata->cmd = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) host->max_id = 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) host->max_lun = NCR_700_MAX_LUNS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) BUG_ON(NCR_700_transport_template == NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) host->transportt = NCR_700_transport_template;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) host->unique_id = (unsigned long)hostdata->base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) hostdata->eh_complete = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) host->hostdata[0] = (unsigned long)hostdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) /* kick the chip */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) NCR_700_writeb(0xff, host, CTEST9_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) if (hostdata->chip710)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) hostdata->rev = (NCR_700_readb(host, CTEST8_REG)>>4) & 0x0f;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) hostdata->rev = (NCR_700_readb(host, CTEST7_REG)>>4) & 0x0f;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) hostdata->fast = (NCR_700_readb(host, CTEST9_REG) == 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) if (banner == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) printk(KERN_NOTICE "53c700: Version " NCR_700_VERSION " By James.Bottomley@HansenPartnership.com\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) banner = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) printk(KERN_NOTICE "scsi%d: %s rev %d %s\n", host->host_no,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) hostdata->chip710 ? "53c710" :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) (hostdata->fast ? "53c700-66" : "53c700"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) hostdata->rev, hostdata->differential ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) "(Differential)" : "");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) /* reset the chip */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) NCR_700_chip_reset(host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) if (scsi_add_host(host, dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) dev_printk(KERN_ERR, dev, "53c700: scsi_add_host failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) scsi_host_put(host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) spi_signalling(host) = hostdata->differential ? SPI_SIGNAL_HVD :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) SPI_SIGNAL_SE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) return host;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) NCR_700_release(struct Scsi_Host *host)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) struct NCR_700_Host_Parameters *hostdata =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) (struct NCR_700_Host_Parameters *)host->hostdata[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) if (hostdata->noncoherent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) dma_free_noncoherent(hostdata->dev, TOTAL_MEM_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) hostdata->script, hostdata->pScript,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) DMA_BIDIRECTIONAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) dma_free_coherent(hostdata->dev, TOTAL_MEM_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) hostdata->script, hostdata->pScript);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) static inline __u8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) NCR_700_identify(int can_disconnect, __u8 lun)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) return IDENTIFY_BASE |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) ((can_disconnect) ? 0x40 : 0) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) (lun & NCR_700_LUN_MASK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) * Function : static int data_residual (Scsi_Host *host)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) * Purpose : return residual data count of what's in the chip. If you
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) * really want to know what this function is doing, it's almost a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) * direct transcription of the algorithm described in the 53c710
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) * guide, except that the DBC and DFIFO registers are only 6 bits
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) * wide on a 53c700.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) * Inputs : host - SCSI host */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) static inline int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) NCR_700_data_residual (struct Scsi_Host *host) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) struct NCR_700_Host_Parameters *hostdata =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) (struct NCR_700_Host_Parameters *)host->hostdata[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) int count, synchronous = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) unsigned int ddir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) if(hostdata->chip710) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) count = ((NCR_700_readb(host, DFIFO_REG) & 0x7f) -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) (NCR_700_readl(host, DBC_REG) & 0x7f)) & 0x7f;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) count = ((NCR_700_readb(host, DFIFO_REG) & 0x3f) -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) (NCR_700_readl(host, DBC_REG) & 0x3f)) & 0x3f;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) if(hostdata->fast)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) synchronous = NCR_700_readb(host, SXFER_REG) & 0x0f;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) /* get the data direction */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) ddir = NCR_700_readb(host, CTEST0_REG) & 0x01;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) if (ddir) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) /* Receive */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) if (synchronous)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) count += (NCR_700_readb(host, SSTAT2_REG) & 0xf0) >> 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) if (NCR_700_readb(host, SSTAT1_REG) & SIDL_REG_FULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) ++count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) /* Send */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) __u8 sstat = NCR_700_readb(host, SSTAT1_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) if (sstat & SODL_REG_FULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) ++count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) if (synchronous && (sstat & SODR_REG_FULL))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) ++count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) #ifdef NCR_700_DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) if(count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) printk("RESIDUAL IS %d (ddir %d)\n", count, ddir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) /* print out the SCSI wires and corresponding phase from the SBCL register
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) * in the chip */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) static inline char *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) sbcl_to_string(__u8 sbcl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) static char ret[256];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) ret[0]='\0';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) for(i=0; i<8; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) if((1<<i) & sbcl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) strcat(ret, NCR_700_SBCL_bits[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) strcat(ret, NCR_700_SBCL_to_phase[sbcl & 0x07]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) static inline __u8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) bitmap_to_number(__u8 bitmap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) __u8 i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) for(i=0; i<8 && !(bitmap &(1<<i)); i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) return i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) /* Pull a slot off the free list */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) STATIC struct NCR_700_command_slot *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) find_empty_slot(struct NCR_700_Host_Parameters *hostdata)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) struct NCR_700_command_slot *slot = hostdata->free_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) if(slot == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) /* sanity check */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) if(hostdata->command_slot_count != NCR_700_COMMAND_SLOTS_PER_HOST)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) printk(KERN_ERR "SLOTS FULL, but count is %d, should be %d\n", hostdata->command_slot_count, NCR_700_COMMAND_SLOTS_PER_HOST);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) if(slot->state != NCR_700_SLOT_FREE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) /* should panic! */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) printk(KERN_ERR "BUSY SLOT ON FREE LIST!!!\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) hostdata->free_list = slot->ITL_forw;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) slot->ITL_forw = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) /* NOTE: set the state to busy here, not queued, since this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) * indicates the slot is in use and cannot be run by the IRQ
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) * finish routine. If we cannot queue the command when it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) * is properly build, we then change to NCR_700_SLOT_QUEUED */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) slot->state = NCR_700_SLOT_BUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) slot->flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) hostdata->command_slot_count++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) return slot;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) STATIC void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) free_slot(struct NCR_700_command_slot *slot,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) struct NCR_700_Host_Parameters *hostdata)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) if((slot->state & NCR_700_SLOT_MASK) != NCR_700_SLOT_MAGIC) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) printk(KERN_ERR "53c700: SLOT %p is not MAGIC!!!\n", slot);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) if(slot->state == NCR_700_SLOT_FREE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) printk(KERN_ERR "53c700: SLOT %p is FREE!!!\n", slot);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) slot->resume_offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) slot->cmnd = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) slot->state = NCR_700_SLOT_FREE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) slot->ITL_forw = hostdata->free_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) hostdata->free_list = slot;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) hostdata->command_slot_count--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) /* This routine really does very little. The command is indexed on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) the ITL and (if tagged) the ITLQ lists in _queuecommand */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) STATIC void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) save_for_reselection(struct NCR_700_Host_Parameters *hostdata,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) struct scsi_cmnd *SCp, __u32 dsp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) /* Its just possible that this gets executed twice */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) if(SCp != NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) struct NCR_700_command_slot *slot =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) (struct NCR_700_command_slot *)SCp->host_scribble;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) slot->resume_offset = dsp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) hostdata->state = NCR_700_HOST_FREE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) hostdata->cmd = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) STATIC inline void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) NCR_700_unmap(struct NCR_700_Host_Parameters *hostdata, struct scsi_cmnd *SCp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) struct NCR_700_command_slot *slot)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) if(SCp->sc_data_direction != DMA_NONE &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) SCp->sc_data_direction != DMA_BIDIRECTIONAL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) scsi_dma_unmap(SCp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) STATIC inline void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) NCR_700_scsi_done(struct NCR_700_Host_Parameters *hostdata,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) struct scsi_cmnd *SCp, int result)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) hostdata->state = NCR_700_HOST_FREE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) hostdata->cmd = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) if(SCp != NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) struct NCR_700_command_slot *slot =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) (struct NCR_700_command_slot *)SCp->host_scribble;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) dma_unmap_single(hostdata->dev, slot->pCmd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) MAX_COMMAND_SIZE, DMA_TO_DEVICE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) if (slot->flags == NCR_700_FLAG_AUTOSENSE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) char *cmnd = NCR_700_get_sense_cmnd(SCp->device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) dma_unmap_single(hostdata->dev, slot->dma_handle,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) SCSI_SENSE_BUFFERSIZE, DMA_FROM_DEVICE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) /* restore the old result if the request sense was
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) * successful */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) if (result == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) result = cmnd[7];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) /* restore the original length */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) SCp->cmd_len = cmnd[8];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) NCR_700_unmap(hostdata, SCp, slot);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) free_slot(slot, hostdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) #ifdef NCR_700_DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) if(NCR_700_get_depth(SCp->device) == 0 ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) NCR_700_get_depth(SCp->device) > SCp->device->queue_depth)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) printk(KERN_ERR "Invalid depth in NCR_700_scsi_done(): %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) NCR_700_get_depth(SCp->device));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) #endif /* NCR_700_DEBUG */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) NCR_700_set_depth(SCp->device, NCR_700_get_depth(SCp->device) - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) SCp->host_scribble = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) SCp->result = result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) SCp->scsi_done(SCp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) printk(KERN_ERR "53c700: SCSI DONE HAS NULL SCp\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) STATIC void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) NCR_700_internal_bus_reset(struct Scsi_Host *host)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) /* Bus reset */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) NCR_700_writeb(ASSERT_RST, host, SCNTL1_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) udelay(50);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) NCR_700_writeb(0, host, SCNTL1_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) STATIC void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) NCR_700_chip_setup(struct Scsi_Host *host)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) struct NCR_700_Host_Parameters *hostdata =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) (struct NCR_700_Host_Parameters *)host->hostdata[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) __u8 min_period;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) __u8 min_xferp = (hostdata->chip710 ? NCR_710_MIN_XFERP : NCR_700_MIN_XFERP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) if(hostdata->chip710) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) __u8 burst_disable = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) __u8 burst_length = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) switch (hostdata->burst_length) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) case 1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) burst_length = BURST_LENGTH_1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) case 2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) burst_length = BURST_LENGTH_2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) case 4:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) burst_length = BURST_LENGTH_4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) case 8:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) burst_length = BURST_LENGTH_8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) burst_disable = BURST_DISABLE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) hostdata->dcntl_extra |= COMPAT_700_MODE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) NCR_700_writeb(hostdata->dcntl_extra, host, DCNTL_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) NCR_700_writeb(burst_length | hostdata->dmode_extra,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) host, DMODE_710_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) NCR_700_writeb(burst_disable | hostdata->ctest7_extra |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) (hostdata->differential ? DIFF : 0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) host, CTEST7_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) NCR_700_writeb(BTB_TIMER_DISABLE, host, CTEST0_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) NCR_700_writeb(FULL_ARBITRATION | ENABLE_PARITY | PARITY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) | AUTO_ATN, host, SCNTL0_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) NCR_700_writeb(BURST_LENGTH_8 | hostdata->dmode_extra,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) host, DMODE_700_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) NCR_700_writeb(hostdata->differential ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) DIFF : 0, host, CTEST7_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) if(hostdata->fast) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) /* this is for 700-66, does nothing on 700 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) NCR_700_writeb(LAST_DIS_ENBL | ENABLE_ACTIVE_NEGATION
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) | GENERATE_RECEIVE_PARITY, host,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) CTEST8_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) NCR_700_writeb(FULL_ARBITRATION | ENABLE_PARITY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) | PARITY | AUTO_ATN, host, SCNTL0_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) NCR_700_writeb(1 << host->this_id, host, SCID_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) NCR_700_writeb(0, host, SBCL_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) NCR_700_writeb(ASYNC_OPERATION, host, SXFER_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) NCR_700_writeb(PHASE_MM_INT | SEL_TIMEOUT_INT | GROSS_ERR_INT | UX_DISC_INT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) | RST_INT | PAR_ERR_INT | SELECT_INT, host, SIEN_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) NCR_700_writeb(ABORT_INT | INT_INST_INT | ILGL_INST_INT, host, DIEN_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) NCR_700_writeb(ENABLE_SELECT, host, SCNTL1_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) if(hostdata->clock > 75) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) printk(KERN_ERR "53c700: Clock speed %dMHz is too high: 75Mhz is the maximum this chip can be driven at\n", hostdata->clock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) /* do the best we can, but the async clock will be out
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) * of spec: sync divider 2, async divider 3 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) DEBUG(("53c700: sync 2 async 3\n"));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) NCR_700_writeb(SYNC_DIV_2_0, host, SBCL_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) NCR_700_writeb(ASYNC_DIV_3_0 | hostdata->dcntl_extra, host, DCNTL_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) hostdata->sync_clock = hostdata->clock/2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) } else if(hostdata->clock > 50 && hostdata->clock <= 75) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) /* sync divider 1.5, async divider 3 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) DEBUG(("53c700: sync 1.5 async 3\n"));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) NCR_700_writeb(SYNC_DIV_1_5, host, SBCL_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) NCR_700_writeb(ASYNC_DIV_3_0 | hostdata->dcntl_extra, host, DCNTL_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) hostdata->sync_clock = hostdata->clock*2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) hostdata->sync_clock /= 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) } else if(hostdata->clock > 37 && hostdata->clock <= 50) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) /* sync divider 1, async divider 2 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) DEBUG(("53c700: sync 1 async 2\n"));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) NCR_700_writeb(SYNC_DIV_1_0, host, SBCL_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) NCR_700_writeb(ASYNC_DIV_2_0 | hostdata->dcntl_extra, host, DCNTL_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) hostdata->sync_clock = hostdata->clock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) } else if(hostdata->clock > 25 && hostdata->clock <=37) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) /* sync divider 1, async divider 1.5 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) DEBUG(("53c700: sync 1 async 1.5\n"));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) NCR_700_writeb(SYNC_DIV_1_0, host, SBCL_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) NCR_700_writeb(ASYNC_DIV_1_5 | hostdata->dcntl_extra, host, DCNTL_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) hostdata->sync_clock = hostdata->clock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) DEBUG(("53c700: sync 1 async 1\n"));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) NCR_700_writeb(SYNC_DIV_1_0, host, SBCL_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) NCR_700_writeb(ASYNC_DIV_1_0 | hostdata->dcntl_extra, host, DCNTL_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) /* sync divider 1, async divider 1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) hostdata->sync_clock = hostdata->clock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) /* Calculate the actual minimum period that can be supported
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) * by our synchronous clock speed. See the 710 manual for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) * exact details of this calculation which is based on a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) * setting of the SXFER register */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) min_period = 1000*(4+min_xferp)/(4*hostdata->sync_clock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) hostdata->min_period = NCR_700_MIN_PERIOD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) if(min_period > NCR_700_MIN_PERIOD)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) hostdata->min_period = min_period;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) STATIC void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) NCR_700_chip_reset(struct Scsi_Host *host)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) struct NCR_700_Host_Parameters *hostdata =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) (struct NCR_700_Host_Parameters *)host->hostdata[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) if(hostdata->chip710) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) NCR_700_writeb(SOFTWARE_RESET_710, host, ISTAT_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) udelay(100);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) NCR_700_writeb(0, host, ISTAT_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) NCR_700_writeb(SOFTWARE_RESET, host, DCNTL_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) udelay(100);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) NCR_700_writeb(0, host, DCNTL_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) mdelay(1000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) NCR_700_chip_setup(host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) /* The heart of the message processing engine is that the instruction
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) * immediately after the INT is the normal case (and so must be CLEAR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) * ACK). If we want to do something else, we call that routine in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) * scripts and set temp to be the normal case + 8 (skipping the CLEAR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) * ACK) so that the routine returns correctly to resume its activity
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) * */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) STATIC __u32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) process_extended_message(struct Scsi_Host *host,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) struct NCR_700_Host_Parameters *hostdata,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) struct scsi_cmnd *SCp, __u32 dsp, __u32 dsps)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) __u32 resume_offset = dsp, temp = dsp + 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) __u8 pun = 0xff, lun = 0xff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) if(SCp != NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) pun = SCp->device->id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) lun = SCp->device->lun;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) switch(hostdata->msgin[2]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) case A_SDTR_MSG:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) if(SCp != NULL && NCR_700_is_flag_set(SCp->device, NCR_700_DEV_BEGIN_SYNC_NEGOTIATION)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) struct scsi_target *starget = SCp->device->sdev_target;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) __u8 period = hostdata->msgin[3];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) __u8 offset = hostdata->msgin[4];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) if(offset == 0 || period == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) period = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) spi_offset(starget) = offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) spi_period(starget) = period;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) if(NCR_700_is_flag_set(SCp->device, NCR_700_DEV_PRINT_SYNC_NEGOTIATION)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) spi_display_xfer_agreement(starget);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) NCR_700_clear_flag(SCp->device, NCR_700_DEV_PRINT_SYNC_NEGOTIATION);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) NCR_700_set_flag(SCp->device, NCR_700_DEV_NEGOTIATED_SYNC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) NCR_700_clear_flag(SCp->device, NCR_700_DEV_BEGIN_SYNC_NEGOTIATION);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) NCR_700_writeb(NCR_700_get_SXFER(SCp->device),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) host, SXFER_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) /* SDTR message out of the blue, reject it */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834) shost_printk(KERN_WARNING, host,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) "Unexpected SDTR msg\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836) hostdata->msgout[0] = A_REJECT_MSG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) dma_sync_to_dev(hostdata, hostdata->msgout, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) script_patch_16(hostdata, hostdata->script,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) MessageCount, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) /* SendMsgOut returns, so set up the return
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) * address */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) resume_offset = hostdata->pScript + Ent_SendMessageWithATN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) case A_WDTR_MSG:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) printk(KERN_INFO "scsi%d: (%d:%d), Unsolicited WDTR after CMD, Rejecting\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) host->host_no, pun, lun);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) hostdata->msgout[0] = A_REJECT_MSG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) dma_sync_to_dev(hostdata, hostdata->msgout, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) script_patch_16(hostdata, hostdata->script, MessageCount, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) resume_offset = hostdata->pScript + Ent_SendMessageWithATN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) printk(KERN_INFO "scsi%d (%d:%d): Unexpected message %s: ",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) host->host_no, pun, lun,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) NCR_700_phase[(dsps & 0xf00) >> 8]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) spi_print_msg(hostdata->msgin);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) printk("\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) /* just reject it */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) hostdata->msgout[0] = A_REJECT_MSG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) dma_sync_to_dev(hostdata, hostdata->msgout, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) script_patch_16(hostdata, hostdata->script, MessageCount, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) /* SendMsgOut returns, so set up the return
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) * address */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) resume_offset = hostdata->pScript + Ent_SendMessageWithATN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) NCR_700_writel(temp, host, TEMP_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) return resume_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) STATIC __u32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) process_message(struct Scsi_Host *host, struct NCR_700_Host_Parameters *hostdata,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) struct scsi_cmnd *SCp, __u32 dsp, __u32 dsps)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) /* work out where to return to */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) __u32 temp = dsp + 8, resume_offset = dsp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) __u8 pun = 0xff, lun = 0xff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) if(SCp != NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) pun = SCp->device->id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) lun = SCp->device->lun;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) #ifdef NCR_700_DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) printk("scsi%d (%d:%d): message %s: ", host->host_no, pun, lun,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) NCR_700_phase[(dsps & 0xf00) >> 8]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890) spi_print_msg(hostdata->msgin);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) printk("\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) switch(hostdata->msgin[0]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) case A_EXTENDED_MSG:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) resume_offset = process_extended_message(host, hostdata, SCp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) dsp, dsps);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) case A_REJECT_MSG:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902) if(SCp != NULL && NCR_700_is_flag_set(SCp->device, NCR_700_DEV_BEGIN_SYNC_NEGOTIATION)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903) /* Rejected our sync negotiation attempt */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) spi_period(SCp->device->sdev_target) =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) spi_offset(SCp->device->sdev_target) = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) NCR_700_set_flag(SCp->device, NCR_700_DEV_NEGOTIATED_SYNC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) NCR_700_clear_flag(SCp->device, NCR_700_DEV_BEGIN_SYNC_NEGOTIATION);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) } else if(SCp != NULL && NCR_700_get_tag_neg_state(SCp->device) == NCR_700_DURING_TAG_NEGOTIATION) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909) /* rejected our first simple tag message */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) scmd_printk(KERN_WARNING, SCp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) "Rejected first tag queue attempt, turning off tag queueing\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) /* we're done negotiating */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) NCR_700_set_tag_neg_state(SCp->device, NCR_700_FINISHED_TAG_NEGOTIATION);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914) hostdata->tag_negotiated &= ~(1<<scmd_id(SCp));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) SCp->device->tagged_supported = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917) SCp->device->simple_tags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) scsi_change_queue_depth(SCp->device, host->cmd_per_lun);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920) shost_printk(KERN_WARNING, host,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) "(%d:%d) Unexpected REJECT Message %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) pun, lun,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923) NCR_700_phase[(dsps & 0xf00) >> 8]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) /* however, just ignore it */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) case A_PARITY_ERROR_MSG:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) printk(KERN_ERR "scsi%d (%d:%d) Parity Error!\n", host->host_no,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930) pun, lun);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931) NCR_700_internal_bus_reset(host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) case A_SIMPLE_TAG_MSG:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934) printk(KERN_INFO "scsi%d (%d:%d) SIMPLE TAG %d %s\n", host->host_no,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935) pun, lun, hostdata->msgin[1],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) NCR_700_phase[(dsps & 0xf00) >> 8]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) /* just ignore it */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940) printk(KERN_INFO "scsi%d (%d:%d): Unexpected message %s: ",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941) host->host_no, pun, lun,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942) NCR_700_phase[(dsps & 0xf00) >> 8]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944) spi_print_msg(hostdata->msgin);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945) printk("\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946) /* just reject it */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) hostdata->msgout[0] = A_REJECT_MSG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948) dma_sync_to_dev(hostdata, hostdata->msgout, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949) script_patch_16(hostdata, hostdata->script, MessageCount, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950) /* SendMsgOut returns, so set up the return
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951) * address */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952) resume_offset = hostdata->pScript + Ent_SendMessageWithATN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956) NCR_700_writel(temp, host, TEMP_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) /* set us up to receive another message */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) dma_sync_from_dev(hostdata, hostdata->msgin, MSG_ARRAY_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959) return resume_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962) STATIC __u32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) process_script_interrupt(__u32 dsps, __u32 dsp, struct scsi_cmnd *SCp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964) struct Scsi_Host *host,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965) struct NCR_700_Host_Parameters *hostdata)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967) __u32 resume_offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968) __u8 pun = 0xff, lun=0xff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970) if(SCp != NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971) pun = SCp->device->id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972) lun = SCp->device->lun;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975) if(dsps == A_GOOD_STATUS_AFTER_STATUS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976) DEBUG((" COMMAND COMPLETE, status=%02x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977) hostdata->status[0]));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978) /* OK, if TCQ still under negotiation, we now know it works */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979) if (NCR_700_get_tag_neg_state(SCp->device) == NCR_700_DURING_TAG_NEGOTIATION)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980) NCR_700_set_tag_neg_state(SCp->device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981) NCR_700_FINISHED_TAG_NEGOTIATION);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983) /* check for contingent allegiance contitions */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984) if(status_byte(hostdata->status[0]) == CHECK_CONDITION ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985) status_byte(hostdata->status[0]) == COMMAND_TERMINATED) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) struct NCR_700_command_slot *slot =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987) (struct NCR_700_command_slot *)SCp->host_scribble;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988) if(slot->flags == NCR_700_FLAG_AUTOSENSE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989) /* OOPS: bad device, returning another
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990) * contingent allegiance condition */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991) scmd_printk(KERN_ERR, SCp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992) "broken device is looping in contingent allegiance: ignoring\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993) NCR_700_scsi_done(hostdata, SCp, hostdata->status[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995) char *cmnd =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996) NCR_700_get_sense_cmnd(SCp->device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997) #ifdef NCR_DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998) scsi_print_command(SCp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999) printk(" cmd %p has status %d, requesting sense\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000) SCp, hostdata->status[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002) /* we can destroy the command here
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003) * because the contingent allegiance
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004) * condition will cause a retry which
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005) * will re-copy the command from the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006) * saved data_cmnd. We also unmap any
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007) * data associated with the command
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008) * here */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009) NCR_700_unmap(hostdata, SCp, slot);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010) dma_unmap_single(hostdata->dev, slot->pCmd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011) MAX_COMMAND_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1012) DMA_TO_DEVICE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1013)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1014) cmnd[0] = REQUEST_SENSE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1015) cmnd[1] = (lun & 0x7) << 5;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1016) cmnd[2] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1017) cmnd[3] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1018) cmnd[4] = SCSI_SENSE_BUFFERSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1019) cmnd[5] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1020) /* Here's a quiet hack: the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1021) * REQUEST_SENSE command is six bytes,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1022) * so store a flag indicating that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1023) * this was an internal sense request
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1024) * and the original status at the end
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1025) * of the command */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1026) cmnd[6] = NCR_700_INTERNAL_SENSE_MAGIC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1027) cmnd[7] = hostdata->status[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1028) cmnd[8] = SCp->cmd_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1029) SCp->cmd_len = 6; /* command length for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1030) * REQUEST_SENSE */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1031) slot->pCmd = dma_map_single(hostdata->dev, cmnd, MAX_COMMAND_SIZE, DMA_TO_DEVICE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1032) slot->dma_handle = dma_map_single(hostdata->dev, SCp->sense_buffer, SCSI_SENSE_BUFFERSIZE, DMA_FROM_DEVICE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1033) slot->SG[0].ins = bS_to_host(SCRIPT_MOVE_DATA_IN | SCSI_SENSE_BUFFERSIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1034) slot->SG[0].pAddr = bS_to_host(slot->dma_handle);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1035) slot->SG[1].ins = bS_to_host(SCRIPT_RETURN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1036) slot->SG[1].pAddr = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1037) slot->resume_offset = hostdata->pScript;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1038) dma_sync_to_dev(hostdata, slot->SG, sizeof(slot->SG[0])*2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1039) dma_sync_from_dev(hostdata, SCp->sense_buffer, SCSI_SENSE_BUFFERSIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1040)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1041) /* queue the command for reissue */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1042) slot->state = NCR_700_SLOT_QUEUED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1043) slot->flags = NCR_700_FLAG_AUTOSENSE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1044) hostdata->state = NCR_700_HOST_FREE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1045) hostdata->cmd = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1046) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1047) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1048) // Currently rely on the mid layer evaluation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1049) // of the tag queuing capability
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1050) //
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1051) //if(status_byte(hostdata->status[0]) == GOOD &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1052) // SCp->cmnd[0] == INQUIRY && SCp->use_sg == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1053) // /* Piggy back the tag queueing support
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1054) // * on this command */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1055) // dma_sync_single_for_cpu(hostdata->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1056) // slot->dma_handle,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1057) // SCp->request_bufflen,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1058) // DMA_FROM_DEVICE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1059) // if(((char *)SCp->request_buffer)[7] & 0x02) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1060) // scmd_printk(KERN_INFO, SCp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1061) // "Enabling Tag Command Queuing\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1062) // hostdata->tag_negotiated |= (1<<scmd_id(SCp));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1063) // NCR_700_set_flag(SCp->device, NCR_700_DEV_BEGIN_TAG_QUEUEING);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1064) // } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1065) // NCR_700_clear_flag(SCp->device, NCR_700_DEV_BEGIN_TAG_QUEUEING);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1066) // hostdata->tag_negotiated &= ~(1<<scmd_id(SCp));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1067) // }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1068) //}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1069) NCR_700_scsi_done(hostdata, SCp, hostdata->status[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1070) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1071) } else if((dsps & 0xfffff0f0) == A_UNEXPECTED_PHASE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1072) __u8 i = (dsps & 0xf00) >> 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1073)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1074) scmd_printk(KERN_ERR, SCp, "UNEXPECTED PHASE %s (%s)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1075) NCR_700_phase[i],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1076) sbcl_to_string(NCR_700_readb(host, SBCL_REG)));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1077) scmd_printk(KERN_ERR, SCp, " len = %d, cmd =",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1078) SCp->cmd_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1079) scsi_print_command(SCp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1080)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1081) NCR_700_internal_bus_reset(host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1082) } else if((dsps & 0xfffff000) == A_FATAL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1083) int i = (dsps & 0xfff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1084)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1085) printk(KERN_ERR "scsi%d: (%d:%d) FATAL ERROR: %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1086) host->host_no, pun, lun, NCR_700_fatal_messages[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1087) if(dsps == A_FATAL_ILLEGAL_MSG_LENGTH) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1088) printk(KERN_ERR " msg begins %02x %02x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1089) hostdata->msgin[0], hostdata->msgin[1]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1090) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1091) NCR_700_internal_bus_reset(host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1092) } else if((dsps & 0xfffff0f0) == A_DISCONNECT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1093) #ifdef NCR_700_DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1094) __u8 i = (dsps & 0xf00) >> 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1095)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1096) printk("scsi%d: (%d:%d), DISCONNECTED (%d) %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1097) host->host_no, pun, lun,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1098) i, NCR_700_phase[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1099) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1100) save_for_reselection(hostdata, SCp, dsp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1102) } else if(dsps == A_RESELECTION_IDENTIFIED) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1103) __u8 lun;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1104) struct NCR_700_command_slot *slot;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1105) __u8 reselection_id = hostdata->reselection_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1106) struct scsi_device *SDp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1108) lun = hostdata->msgin[0] & 0x1f;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1110) hostdata->reselection_id = 0xff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1111) DEBUG(("scsi%d: (%d:%d) RESELECTED!\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1112) host->host_no, reselection_id, lun));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1113) /* clear the reselection indicator */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1114) SDp = __scsi_device_lookup(host, 0, reselection_id, lun);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1115) if(unlikely(SDp == NULL)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1116) printk(KERN_ERR "scsi%d: (%d:%d) HAS NO device\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1117) host->host_no, reselection_id, lun);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1118) BUG();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1119) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1120) if(hostdata->msgin[1] == A_SIMPLE_TAG_MSG) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1121) struct scsi_cmnd *SCp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1123) SCp = scsi_host_find_tag(SDp->host, hostdata->msgin[2]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1124) if(unlikely(SCp == NULL)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1125) printk(KERN_ERR "scsi%d: (%d:%d) no saved request for tag %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1126) host->host_no, reselection_id, lun, hostdata->msgin[2]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1127) BUG();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1128) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1130) slot = (struct NCR_700_command_slot *)SCp->host_scribble;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1131) DDEBUG(KERN_DEBUG, SDp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1132) "reselection is tag %d, slot %p(%d)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1133) hostdata->msgin[2], slot, slot->tag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1134) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1135) struct NCR_700_Device_Parameters *p = SDp->hostdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1136) struct scsi_cmnd *SCp = p->current_cmnd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1138) if(unlikely(SCp == NULL)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1139) sdev_printk(KERN_ERR, SDp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1140) "no saved request for untagged cmd\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1141) BUG();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1142) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1143) slot = (struct NCR_700_command_slot *)SCp->host_scribble;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1144) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1145)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1146) if(slot == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1147) printk(KERN_ERR "scsi%d: (%d:%d) RESELECTED but no saved command (MSG = %02x %02x %02x)!!\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1148) host->host_no, reselection_id, lun,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1149) hostdata->msgin[0], hostdata->msgin[1],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1150) hostdata->msgin[2]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1151) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1152) if(hostdata->state != NCR_700_HOST_BUSY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1153) printk(KERN_ERR "scsi%d: FATAL, host not busy during valid reselection!\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1154) host->host_no);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1155) resume_offset = slot->resume_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1156) hostdata->cmd = slot->cmnd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1157)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1158) /* re-patch for this command */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1159) script_patch_32_abs(hostdata, hostdata->script,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1160) CommandAddress, slot->pCmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1161) script_patch_16(hostdata, hostdata->script,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1162) CommandCount, slot->cmnd->cmd_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1163) script_patch_32_abs(hostdata, hostdata->script,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1164) SGScriptStartAddress,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1165) to32bit(&slot->pSG[0].ins));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1166)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1167) /* Note: setting SXFER only works if we're
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1168) * still in the MESSAGE phase, so it is vital
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1169) * that ACK is still asserted when we process
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1170) * the reselection message. The resume offset
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1171) * should therefore always clear ACK */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1172) NCR_700_writeb(NCR_700_get_SXFER(hostdata->cmd->device),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1173) host, SXFER_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1174) dma_sync_from_dev(hostdata, hostdata->msgin,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1175) MSG_ARRAY_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1176) dma_sync_to_dev(hostdata, hostdata->msgout,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1177) MSG_ARRAY_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1178) /* I'm just being paranoid here, the command should
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1179) * already have been flushed from the cache */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1180) dma_sync_to_dev(hostdata, slot->cmnd->cmnd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1181) slot->cmnd->cmd_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1182)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1183)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1184)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1185) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1186) } else if(dsps == A_RESELECTED_DURING_SELECTION) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1187)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1188) /* This section is full of debugging code because I've
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1189) * never managed to reach it. I think what happens is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1190) * that, because the 700 runs with selection
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1191) * interrupts enabled the whole time that we take a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1192) * selection interrupt before we manage to get to the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1193) * reselected script interrupt */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1194)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1195) __u8 reselection_id = NCR_700_readb(host, SFBR_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1196) struct NCR_700_command_slot *slot;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1197)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1198) /* Take out our own ID */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1199) reselection_id &= ~(1<<host->this_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1201) /* I've never seen this happen, so keep this as a printk rather
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1202) * than a debug */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1203) printk(KERN_INFO "scsi%d: (%d:%d) RESELECTION DURING SELECTION, dsp=%08x[%04x] state=%d, count=%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1204) host->host_no, reselection_id, lun, dsp, dsp - hostdata->pScript, hostdata->state, hostdata->command_slot_count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1205)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1206) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1207) /* FIXME: DEBUGGING CODE */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1208) __u32 SG = (__u32)bS_to_cpu(hostdata->script[A_SGScriptStartAddress_used[0]]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1209) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1210)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1211) for(i=0; i< NCR_700_COMMAND_SLOTS_PER_HOST; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1212) if(SG >= to32bit(&hostdata->slots[i].pSG[0])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1213) && SG <= to32bit(&hostdata->slots[i].pSG[NCR_700_SG_SEGMENTS]))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1214) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1215) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1216) printk(KERN_INFO "IDENTIFIED SG segment as being %08x in slot %p, cmd %p, slot->resume_offset=%08x\n", SG, &hostdata->slots[i], hostdata->slots[i].cmnd, hostdata->slots[i].resume_offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1217) SCp = hostdata->slots[i].cmnd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1218) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1219)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1220) if(SCp != NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1221) slot = (struct NCR_700_command_slot *)SCp->host_scribble;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1222) /* change slot from busy to queued to redo command */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1223) slot->state = NCR_700_SLOT_QUEUED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1224) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1225) hostdata->cmd = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1226)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1227) if(reselection_id == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1228) if(hostdata->reselection_id == 0xff) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1229) printk(KERN_ERR "scsi%d: Invalid reselection during selection!!\n", host->host_no);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1230) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1231) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1232) printk(KERN_ERR "scsi%d: script reselected and we took a selection interrupt\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1233) host->host_no);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1234) reselection_id = hostdata->reselection_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1235) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1236) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1237)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1238) /* convert to real ID */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1239) reselection_id = bitmap_to_number(reselection_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1240) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1241) hostdata->reselection_id = reselection_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1242) /* just in case we have a stale simple tag message, clear it */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1243) hostdata->msgin[1] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1244) dma_sync_to_dev(hostdata, hostdata->msgin, MSG_ARRAY_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1245) if(hostdata->tag_negotiated & (1<<reselection_id)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1246) resume_offset = hostdata->pScript + Ent_GetReselectionWithTag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1247) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1248) resume_offset = hostdata->pScript + Ent_GetReselectionData;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1249) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1250) } else if(dsps == A_COMPLETED_SELECTION_AS_TARGET) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1251) /* we've just disconnected from the bus, do nothing since
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1252) * a return here will re-run the queued command slot
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1253) * that may have been interrupted by the initial selection */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1254) DEBUG((" SELECTION COMPLETED\n"));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1255) } else if((dsps & 0xfffff0f0) == A_MSG_IN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1256) resume_offset = process_message(host, hostdata, SCp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1257) dsp, dsps);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1258) } else if((dsps & 0xfffff000) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1259) __u8 i = (dsps & 0xf0) >> 4, j = (dsps & 0xf00) >> 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1260) printk(KERN_ERR "scsi%d: (%d:%d), unhandled script condition %s %s at %04x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1261) host->host_no, pun, lun, NCR_700_condition[i],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1262) NCR_700_phase[j], dsp - hostdata->pScript);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1263) if(SCp != NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1264) struct scatterlist *sg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1266) scsi_print_command(SCp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1267) scsi_for_each_sg(SCp, sg, scsi_sg_count(SCp) + 1, i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1268) printk(KERN_INFO " SG[%d].length = %d, move_insn=%08x, addr %08x\n", i, sg->length, ((struct NCR_700_command_slot *)SCp->host_scribble)->SG[i].ins, ((struct NCR_700_command_slot *)SCp->host_scribble)->SG[i].pAddr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1269) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1270) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1271) NCR_700_internal_bus_reset(host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1272) } else if((dsps & 0xfffff000) == A_DEBUG_INTERRUPT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1273) printk(KERN_NOTICE "scsi%d (%d:%d) DEBUG INTERRUPT %d AT %08x[%04x], continuing\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1274) host->host_no, pun, lun, dsps & 0xfff, dsp, dsp - hostdata->pScript);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1275) resume_offset = dsp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1276) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1277) printk(KERN_ERR "scsi%d: (%d:%d), unidentified script interrupt 0x%x at %04x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1278) host->host_no, pun, lun, dsps, dsp - hostdata->pScript);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1279) NCR_700_internal_bus_reset(host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1280) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1281) return resume_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1282) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1283)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1284) /* We run the 53c700 with selection interrupts always enabled. This
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1285) * means that the chip may be selected as soon as the bus frees. On a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1286) * busy bus, this can be before the scripts engine finishes its
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1287) * processing. Therefore, part of the selection processing has to be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1288) * to find out what the scripts engine is doing and complete the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1289) * function if necessary (i.e. process the pending disconnect or save
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1290) * the interrupted initial selection */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1291) STATIC inline __u32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1292) process_selection(struct Scsi_Host *host, __u32 dsp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1293) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1294) __u8 id = 0; /* Squash compiler warning */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1295) int count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1296) __u32 resume_offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1297) struct NCR_700_Host_Parameters *hostdata =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1298) (struct NCR_700_Host_Parameters *)host->hostdata[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1299) struct scsi_cmnd *SCp = hostdata->cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1300) __u8 sbcl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1301)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1302) for(count = 0; count < 5; count++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1303) id = NCR_700_readb(host, hostdata->chip710 ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1304) CTEST9_REG : SFBR_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1305)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1306) /* Take out our own ID */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1307) id &= ~(1<<host->this_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1308) if(id != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1309) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1310) udelay(5);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1311) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1312) sbcl = NCR_700_readb(host, SBCL_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1313) if((sbcl & SBCL_IO) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1314) /* mark as having been selected rather than reselected */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1315) id = 0xff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1316) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1317) /* convert to real ID */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1318) hostdata->reselection_id = id = bitmap_to_number(id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1319) DEBUG(("scsi%d: Reselected by %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1320) host->host_no, id));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1321) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1322) if(hostdata->state == NCR_700_HOST_BUSY && SCp != NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1323) struct NCR_700_command_slot *slot =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1324) (struct NCR_700_command_slot *)SCp->host_scribble;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1325) DEBUG((" ID %d WARNING: RESELECTION OF BUSY HOST, saving cmd %p, slot %p, addr %x [%04x], resume %x!\n", id, hostdata->cmd, slot, dsp, dsp - hostdata->pScript, resume_offset));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1326)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1327) switch(dsp - hostdata->pScript) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1328) case Ent_Disconnect1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1329) case Ent_Disconnect2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1330) save_for_reselection(hostdata, SCp, Ent_Disconnect2 + hostdata->pScript);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1331) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1332) case Ent_Disconnect3:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1333) case Ent_Disconnect4:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1334) save_for_reselection(hostdata, SCp, Ent_Disconnect4 + hostdata->pScript);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1335) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1336) case Ent_Disconnect5:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1337) case Ent_Disconnect6:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1338) save_for_reselection(hostdata, SCp, Ent_Disconnect6 + hostdata->pScript);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1339) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1340) case Ent_Disconnect7:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1341) case Ent_Disconnect8:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1342) save_for_reselection(hostdata, SCp, Ent_Disconnect8 + hostdata->pScript);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1343) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1344) case Ent_Finish1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1345) case Ent_Finish2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1346) process_script_interrupt(A_GOOD_STATUS_AFTER_STATUS, dsp, SCp, host, hostdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1347) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1348)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1349) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1350) slot->state = NCR_700_SLOT_QUEUED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1351) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1352) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1353) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1354) hostdata->state = NCR_700_HOST_BUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1355) hostdata->cmd = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1356) /* clear any stale simple tag message */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1357) hostdata->msgin[1] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1358) dma_sync_to_dev(hostdata, hostdata->msgin, MSG_ARRAY_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1359)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1360) if(id == 0xff) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1361) /* Selected as target, Ignore */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1362) resume_offset = hostdata->pScript + Ent_SelectedAsTarget;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1363) } else if(hostdata->tag_negotiated & (1<<id)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1364) resume_offset = hostdata->pScript + Ent_GetReselectionWithTag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1365) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1366) resume_offset = hostdata->pScript + Ent_GetReselectionData;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1367) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1368) return resume_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1369) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1370)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1371) static inline void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1372) NCR_700_clear_fifo(struct Scsi_Host *host) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1373) const struct NCR_700_Host_Parameters *hostdata
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1374) = (struct NCR_700_Host_Parameters *)host->hostdata[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1375) if(hostdata->chip710) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1376) NCR_700_writeb(CLR_FIFO_710, host, CTEST8_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1377) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1378) NCR_700_writeb(CLR_FIFO, host, DFIFO_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1379) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1380) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1381)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1382) static inline void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1383) NCR_700_flush_fifo(struct Scsi_Host *host) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1384) const struct NCR_700_Host_Parameters *hostdata
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1385) = (struct NCR_700_Host_Parameters *)host->hostdata[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1386) if(hostdata->chip710) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1387) NCR_700_writeb(FLUSH_DMA_FIFO_710, host, CTEST8_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1388) udelay(10);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1389) NCR_700_writeb(0, host, CTEST8_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1390) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1391) NCR_700_writeb(FLUSH_DMA_FIFO, host, DFIFO_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1392) udelay(10);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1393) NCR_700_writeb(0, host, DFIFO_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1394) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1395) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1396)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1397)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1398) /* The queue lock with interrupts disabled must be held on entry to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1399) * this function */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1400) STATIC int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1401) NCR_700_start_command(struct scsi_cmnd *SCp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1402) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1403) struct NCR_700_command_slot *slot =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1404) (struct NCR_700_command_slot *)SCp->host_scribble;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1405) struct NCR_700_Host_Parameters *hostdata =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1406) (struct NCR_700_Host_Parameters *)SCp->device->host->hostdata[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1407) __u16 count = 1; /* for IDENTIFY message */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1408) u8 lun = SCp->device->lun;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1409)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1410) if(hostdata->state != NCR_700_HOST_FREE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1411) /* keep this inside the lock to close the race window where
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1412) * the running command finishes on another CPU while we don't
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1413) * change the state to queued on this one */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1414) slot->state = NCR_700_SLOT_QUEUED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1415)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1416) DEBUG(("scsi%d: host busy, queueing command %p, slot %p\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1417) SCp->device->host->host_no, slot->cmnd, slot));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1418) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1419) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1420) hostdata->state = NCR_700_HOST_BUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1421) hostdata->cmd = SCp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1422) slot->state = NCR_700_SLOT_BUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1423) /* keep interrupts disabled until we have the command correctly
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1424) * set up so we cannot take a selection interrupt */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1425)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1426) hostdata->msgout[0] = NCR_700_identify((SCp->cmnd[0] != REQUEST_SENSE &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1427) slot->flags != NCR_700_FLAG_AUTOSENSE),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1428) lun);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1429) /* for INQUIRY or REQUEST_SENSE commands, we cannot be sure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1430) * if the negotiated transfer parameters still hold, so
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1431) * always renegotiate them */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1432) if(SCp->cmnd[0] == INQUIRY || SCp->cmnd[0] == REQUEST_SENSE ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1433) slot->flags == NCR_700_FLAG_AUTOSENSE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1434) NCR_700_clear_flag(SCp->device, NCR_700_DEV_NEGOTIATED_SYNC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1435) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1436)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1437) /* REQUEST_SENSE is asking for contingent I_T_L(_Q) status.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1438) * If a contingent allegiance condition exists, the device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1439) * will refuse all tags, so send the request sense as untagged
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1440) * */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1441) if((hostdata->tag_negotiated & (1<<scmd_id(SCp)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1442) && (slot->tag != SCSI_NO_TAG && SCp->cmnd[0] != REQUEST_SENSE &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1443) slot->flags != NCR_700_FLAG_AUTOSENSE)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1444) count += spi_populate_tag_msg(&hostdata->msgout[count], SCp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1445) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1446)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1447) if(hostdata->fast &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1448) NCR_700_is_flag_clear(SCp->device, NCR_700_DEV_NEGOTIATED_SYNC)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1449) count += spi_populate_sync_msg(&hostdata->msgout[count],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1450) spi_period(SCp->device->sdev_target),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1451) spi_offset(SCp->device->sdev_target));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1452) NCR_700_set_flag(SCp->device, NCR_700_DEV_BEGIN_SYNC_NEGOTIATION);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1453) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1454)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1455) script_patch_16(hostdata, hostdata->script, MessageCount, count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1456)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1457) script_patch_ID(hostdata, hostdata->script, Device_ID, 1<<scmd_id(SCp));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1458)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1459) script_patch_32_abs(hostdata, hostdata->script, CommandAddress,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1460) slot->pCmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1461) script_patch_16(hostdata, hostdata->script, CommandCount, SCp->cmd_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1462) /* finally plumb the beginning of the SG list into the script
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1463) * */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1464) script_patch_32_abs(hostdata, hostdata->script,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1465) SGScriptStartAddress, to32bit(&slot->pSG[0].ins));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1466) NCR_700_clear_fifo(SCp->device->host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1467)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1468) if(slot->resume_offset == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1469) slot->resume_offset = hostdata->pScript;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1470) /* now perform all the writebacks and invalidates */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1471) dma_sync_to_dev(hostdata, hostdata->msgout, count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1472) dma_sync_from_dev(hostdata, hostdata->msgin, MSG_ARRAY_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1473) dma_sync_to_dev(hostdata, SCp->cmnd, SCp->cmd_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1474) dma_sync_from_dev(hostdata, hostdata->status, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1475)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1476) /* set the synchronous period/offset */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1477) NCR_700_writeb(NCR_700_get_SXFER(SCp->device),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1478) SCp->device->host, SXFER_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1479) NCR_700_writel(slot->temp, SCp->device->host, TEMP_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1480) NCR_700_writel(slot->resume_offset, SCp->device->host, DSP_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1481)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1482) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1483) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1484)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1485) irqreturn_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1486) NCR_700_intr(int irq, void *dev_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1487) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1488) struct Scsi_Host *host = (struct Scsi_Host *)dev_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1489) struct NCR_700_Host_Parameters *hostdata =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1490) (struct NCR_700_Host_Parameters *)host->hostdata[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1491) __u8 istat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1492) __u32 resume_offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1493) __u8 pun = 0xff, lun = 0xff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1494) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1495) int handled = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1496)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1497) /* Use the host lock to serialise access to the 53c700
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1498) * hardware. Note: In future, we may need to take the queue
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1499) * lock to enter the done routines. When that happens, we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1500) * need to ensure that for this driver, the host lock and the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1501) * queue lock point to the same thing. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1502) spin_lock_irqsave(host->host_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1503) if((istat = NCR_700_readb(host, ISTAT_REG))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1504) & (SCSI_INT_PENDING | DMA_INT_PENDING)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1505) __u32 dsps;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1506) __u8 sstat0 = 0, dstat = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1507) __u32 dsp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1508) struct scsi_cmnd *SCp = hostdata->cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1509)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1510) handled = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1511) SCp = hostdata->cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1512)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1513) if(istat & SCSI_INT_PENDING) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1514) udelay(10);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1515)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1516) sstat0 = NCR_700_readb(host, SSTAT0_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1517) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1518)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1519) if(istat & DMA_INT_PENDING) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1520) udelay(10);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1521)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1522) dstat = NCR_700_readb(host, DSTAT_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1523) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1524)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1525) dsps = NCR_700_readl(host, DSPS_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1526) dsp = NCR_700_readl(host, DSP_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1527)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1528) DEBUG(("scsi%d: istat %02x sstat0 %02x dstat %02x dsp %04x[%08x] dsps 0x%x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1529) host->host_no, istat, sstat0, dstat,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1530) (dsp - (__u32)(hostdata->pScript))/4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1531) dsp, dsps));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1532)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1533) if(SCp != NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1534) pun = SCp->device->id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1535) lun = SCp->device->lun;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1536) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1537)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1538) if(sstat0 & SCSI_RESET_DETECTED) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1539) struct scsi_device *SDp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1540) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1541)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1542) hostdata->state = NCR_700_HOST_BUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1543)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1544) printk(KERN_ERR "scsi%d: Bus Reset detected, executing command %p, slot %p, dsp %08x[%04x]\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1545) host->host_no, SCp, SCp == NULL ? NULL : SCp->host_scribble, dsp, dsp - hostdata->pScript);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1546)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1547) scsi_report_bus_reset(host, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1548)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1549) /* clear all the negotiated parameters */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1550) __shost_for_each_device(SDp, host)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1551) NCR_700_clear_flag(SDp, ~0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1552)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1553) /* clear all the slots and their pending commands */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1554) for(i = 0; i < NCR_700_COMMAND_SLOTS_PER_HOST; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1555) struct scsi_cmnd *SCp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1556) struct NCR_700_command_slot *slot =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1557) &hostdata->slots[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1558)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1559) if(slot->state == NCR_700_SLOT_FREE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1560) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1561)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1562) SCp = slot->cmnd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1563) printk(KERN_ERR " failing command because of reset, slot %p, cmnd %p\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1564) slot, SCp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1565) free_slot(slot, hostdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1566) SCp->host_scribble = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1567) NCR_700_set_depth(SCp->device, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1568) /* NOTE: deadlock potential here: we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1569) * rely on mid-layer guarantees that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1570) * scsi_done won't try to issue the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1571) * command again otherwise we'll
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1572) * deadlock on the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1573) * hostdata->state_lock */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1574) SCp->result = DID_RESET << 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1575) SCp->scsi_done(SCp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1576) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1577) mdelay(25);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1578) NCR_700_chip_setup(host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1579)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1580) hostdata->state = NCR_700_HOST_FREE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1581) hostdata->cmd = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1582) /* signal back if this was an eh induced reset */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1583) if(hostdata->eh_complete != NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1584) complete(hostdata->eh_complete);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1585) goto out_unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1586) } else if(sstat0 & SELECTION_TIMEOUT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1587) DEBUG(("scsi%d: (%d:%d) selection timeout\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1588) host->host_no, pun, lun));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1589) NCR_700_scsi_done(hostdata, SCp, DID_NO_CONNECT<<16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1590) } else if(sstat0 & PHASE_MISMATCH) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1591) struct NCR_700_command_slot *slot = (SCp == NULL) ? NULL :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1592) (struct NCR_700_command_slot *)SCp->host_scribble;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1593)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1594) if(dsp == Ent_SendMessage + 8 + hostdata->pScript) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1595) /* It wants to reply to some part of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1596) * our message */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1597) #ifdef NCR_700_DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1598) __u32 temp = NCR_700_readl(host, TEMP_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1599) int count = (hostdata->script[Ent_SendMessage/4] & 0xffffff) - ((NCR_700_readl(host, DBC_REG) & 0xffffff) + NCR_700_data_residual(host));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1600) printk("scsi%d (%d:%d) PHASE MISMATCH IN SEND MESSAGE %d remain, return %p[%04x], phase %s\n", host->host_no, pun, lun, count, (void *)temp, temp - hostdata->pScript, sbcl_to_string(NCR_700_readb(host, SBCL_REG)));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1601) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1602) resume_offset = hostdata->pScript + Ent_SendMessagePhaseMismatch;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1603) } else if(dsp >= to32bit(&slot->pSG[0].ins) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1604) dsp <= to32bit(&slot->pSG[NCR_700_SG_SEGMENTS].ins)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1605) int data_transfer = NCR_700_readl(host, DBC_REG) & 0xffffff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1606) int SGcount = (dsp - to32bit(&slot->pSG[0].ins))/sizeof(struct NCR_700_SG_List);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1607) int residual = NCR_700_data_residual(host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1608) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1609) #ifdef NCR_700_DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1610) __u32 naddr = NCR_700_readl(host, DNAD_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1611)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1612) printk("scsi%d: (%d:%d) Expected phase mismatch in slot->SG[%d], transferred 0x%x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1613) host->host_no, pun, lun,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1614) SGcount, data_transfer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1615) scsi_print_command(SCp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1616) if(residual) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1617) printk("scsi%d: (%d:%d) Expected phase mismatch in slot->SG[%d], transferred 0x%x, residual %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1618) host->host_no, pun, lun,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1619) SGcount, data_transfer, residual);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1620) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1621) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1622) data_transfer += residual;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1623)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1624) if(data_transfer != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1625) int count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1626) __u32 pAddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1627)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1628) SGcount--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1629)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1630) count = (bS_to_cpu(slot->SG[SGcount].ins) & 0x00ffffff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1631) DEBUG(("DATA TRANSFER MISMATCH, count = %d, transferred %d\n", count, count-data_transfer));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1632) slot->SG[SGcount].ins &= bS_to_host(0xff000000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1633) slot->SG[SGcount].ins |= bS_to_host(data_transfer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1634) pAddr = bS_to_cpu(slot->SG[SGcount].pAddr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1635) pAddr += (count - data_transfer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1636) #ifdef NCR_700_DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1637) if(pAddr != naddr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1638) printk("scsi%d (%d:%d) transfer mismatch pAddr=%lx, naddr=%lx, data_transfer=%d, residual=%d\n", host->host_no, pun, lun, (unsigned long)pAddr, (unsigned long)naddr, data_transfer, residual);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1639) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1640) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1641) slot->SG[SGcount].pAddr = bS_to_host(pAddr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1642) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1643) /* set the executed moves to nops */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1644) for(i=0; i<SGcount; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1645) slot->SG[i].ins = bS_to_host(SCRIPT_NOP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1646) slot->SG[i].pAddr = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1647) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1648) dma_sync_to_dev(hostdata, slot->SG, sizeof(slot->SG));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1649) /* and pretend we disconnected after
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1650) * the command phase */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1651) resume_offset = hostdata->pScript + Ent_MsgInDuringData;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1652) /* make sure all the data is flushed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1653) NCR_700_flush_fifo(host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1654) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1655) __u8 sbcl = NCR_700_readb(host, SBCL_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1656) printk(KERN_ERR "scsi%d: (%d:%d) phase mismatch at %04x, phase %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1657) host->host_no, pun, lun, dsp - hostdata->pScript, sbcl_to_string(sbcl));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1658) NCR_700_internal_bus_reset(host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1659) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1660)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1661) } else if(sstat0 & SCSI_GROSS_ERROR) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1662) printk(KERN_ERR "scsi%d: (%d:%d) GROSS ERROR\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1663) host->host_no, pun, lun);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1664) NCR_700_scsi_done(hostdata, SCp, DID_ERROR<<16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1665) } else if(sstat0 & PARITY_ERROR) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1666) printk(KERN_ERR "scsi%d: (%d:%d) PARITY ERROR\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1667) host->host_no, pun, lun);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1668) NCR_700_scsi_done(hostdata, SCp, DID_ERROR<<16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1669) } else if(dstat & SCRIPT_INT_RECEIVED) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1670) DEBUG(("scsi%d: (%d:%d) ====>SCRIPT INTERRUPT<====\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1671) host->host_no, pun, lun));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1672) resume_offset = process_script_interrupt(dsps, dsp, SCp, host, hostdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1673) } else if(dstat & (ILGL_INST_DETECTED)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1674) printk(KERN_ERR "scsi%d: (%d:%d) Illegal Instruction detected at 0x%08x[0x%x]!!!\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1675) " Please email James.Bottomley@HansenPartnership.com with the details\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1676) host->host_no, pun, lun,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1677) dsp, dsp - hostdata->pScript);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1678) NCR_700_scsi_done(hostdata, SCp, DID_ERROR<<16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1679) } else if(dstat & (WATCH_DOG_INTERRUPT|ABORTED)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1680) printk(KERN_ERR "scsi%d: (%d:%d) serious DMA problem, dstat=%02x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1681) host->host_no, pun, lun, dstat);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1682) NCR_700_scsi_done(hostdata, SCp, DID_ERROR<<16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1683) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1684)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1685)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1686) /* NOTE: selection interrupt processing MUST occur
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1687) * after script interrupt processing to correctly cope
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1688) * with the case where we process a disconnect and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1689) * then get reselected before we process the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1690) * disconnection */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1691) if(sstat0 & SELECTED) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1692) /* FIXME: It currently takes at least FOUR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1693) * interrupts to complete a command that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1694) * disconnects: one for the disconnect, one
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1695) * for the reselection, one to get the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1696) * reselection data and one to complete the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1697) * command. If we guess the reselected
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1698) * command here and prepare it, we only need
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1699) * to get a reselection data interrupt if we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1700) * guessed wrongly. Since the interrupt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1701) * overhead is much greater than the command
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1702) * setup, this would be an efficient
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1703) * optimisation particularly as we probably
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1704) * only have one outstanding command on a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1705) * target most of the time */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1706)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1707) resume_offset = process_selection(host, dsp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1708)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1709) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1710)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1711) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1712)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1713) if(resume_offset) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1714) if(hostdata->state != NCR_700_HOST_BUSY) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1715) printk(KERN_ERR "scsi%d: Driver error: resume at 0x%08x [0x%04x] with non busy host!\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1716) host->host_no, resume_offset, resume_offset - hostdata->pScript);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1717) hostdata->state = NCR_700_HOST_BUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1718) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1719)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1720) DEBUG(("Attempting to resume at %x\n", resume_offset));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1721) NCR_700_clear_fifo(host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1722) NCR_700_writel(resume_offset, host, DSP_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1723) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1724) /* There is probably a technical no-no about this: If we're a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1725) * shared interrupt and we got this interrupt because the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1726) * other device needs servicing not us, we're still going to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1727) * check our queued commands here---of course, there shouldn't
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1728) * be any outstanding.... */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1729) if(hostdata->state == NCR_700_HOST_FREE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1730) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1731)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1732) for(i = 0; i < NCR_700_COMMAND_SLOTS_PER_HOST; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1733) /* fairness: always run the queue from the last
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1734) * position we left off */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1735) int j = (i + hostdata->saved_slot_position)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1736) % NCR_700_COMMAND_SLOTS_PER_HOST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1737)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1738) if(hostdata->slots[j].state != NCR_700_SLOT_QUEUED)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1739) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1740) if(NCR_700_start_command(hostdata->slots[j].cmnd)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1741) DEBUG(("scsi%d: Issuing saved command slot %p, cmd %p\t\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1742) host->host_no, &hostdata->slots[j],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1743) hostdata->slots[j].cmnd));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1744) hostdata->saved_slot_position = j + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1745) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1746)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1747) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1748) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1749) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1750) out_unlock:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1751) spin_unlock_irqrestore(host->host_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1752) return IRQ_RETVAL(handled);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1753) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1754)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1755) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1756) NCR_700_queuecommand_lck(struct scsi_cmnd *SCp, void (*done)(struct scsi_cmnd *))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1757) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1758) struct NCR_700_Host_Parameters *hostdata =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1759) (struct NCR_700_Host_Parameters *)SCp->device->host->hostdata[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1760) __u32 move_ins;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1761) struct NCR_700_command_slot *slot;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1762)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1763) if(hostdata->command_slot_count >= NCR_700_COMMAND_SLOTS_PER_HOST) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1764) /* We're over our allocation, this should never happen
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1765) * since we report the max allocation to the mid layer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1766) printk(KERN_WARNING "scsi%d: Command depth has gone over queue depth\n", SCp->device->host->host_no);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1767) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1768) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1769) /* check for untagged commands. We cannot have any outstanding
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1770) * commands if we accept them. Commands could be untagged because:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1771) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1772) * - The tag negotiated bitmap is clear
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1773) * - The blk layer sent and untagged command
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1774) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1775) if(NCR_700_get_depth(SCp->device) != 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1776) && (!(hostdata->tag_negotiated & (1<<scmd_id(SCp)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1777) || !(SCp->flags & SCMD_TAGGED))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1778) CDEBUG(KERN_ERR, SCp, "has non zero depth %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1779) NCR_700_get_depth(SCp->device));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1780) return SCSI_MLQUEUE_DEVICE_BUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1781) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1782) if(NCR_700_get_depth(SCp->device) >= SCp->device->queue_depth) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1783) CDEBUG(KERN_ERR, SCp, "has max tag depth %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1784) NCR_700_get_depth(SCp->device));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1785) return SCSI_MLQUEUE_DEVICE_BUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1786) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1787) NCR_700_set_depth(SCp->device, NCR_700_get_depth(SCp->device) + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1788)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1789) /* begin the command here */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1790) /* no need to check for NULL, test for command_slot_count above
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1791) * ensures a slot is free */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1792) slot = find_empty_slot(hostdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1793)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1794) slot->cmnd = SCp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1795)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1796) SCp->scsi_done = done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1797) SCp->host_scribble = (unsigned char *)slot;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1798) SCp->SCp.ptr = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1799) SCp->SCp.buffer = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1800)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1801) #ifdef NCR_700_DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1802) printk("53c700: scsi%d, command ", SCp->device->host->host_no);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1803) scsi_print_command(SCp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1804) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1805) if ((SCp->flags & SCMD_TAGGED)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1806) && (hostdata->tag_negotiated &(1<<scmd_id(SCp))) == 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1807) && NCR_700_get_tag_neg_state(SCp->device) == NCR_700_START_TAG_NEGOTIATION) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1808) scmd_printk(KERN_ERR, SCp, "Enabling Tag Command Queuing\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1809) hostdata->tag_negotiated |= (1<<scmd_id(SCp));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1810) NCR_700_set_tag_neg_state(SCp->device, NCR_700_DURING_TAG_NEGOTIATION);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1811) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1812)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1813) /* here we may have to process an untagged command. The gate
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1814) * above ensures that this will be the only one outstanding,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1815) * so clear the tag negotiated bit.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1816) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1817) * FIXME: This will royally screw up on multiple LUN devices
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1818) * */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1819) if (!(SCp->flags & SCMD_TAGGED)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1820) && (hostdata->tag_negotiated &(1<<scmd_id(SCp)))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1821) scmd_printk(KERN_INFO, SCp, "Disabling Tag Command Queuing\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1822) hostdata->tag_negotiated &= ~(1<<scmd_id(SCp));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1823) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1824)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1825) if ((hostdata->tag_negotiated & (1<<scmd_id(SCp))) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1826) SCp->device->simple_tags) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1827) slot->tag = SCp->request->tag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1828) CDEBUG(KERN_DEBUG, SCp, "sending out tag %d, slot %p\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1829) slot->tag, slot);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1830) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1831) struct NCR_700_Device_Parameters *p = SCp->device->hostdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1832)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1833) slot->tag = SCSI_NO_TAG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1834) /* save current command for reselection */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1835) p->current_cmnd = SCp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1836) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1837) /* sanity check: some of the commands generated by the mid-layer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1838) * have an eccentric idea of their sc_data_direction */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1839) if(!scsi_sg_count(SCp) && !scsi_bufflen(SCp) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1840) SCp->sc_data_direction != DMA_NONE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1841) #ifdef NCR_700_DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1842) printk("53c700: Command");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1843) scsi_print_command(SCp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1844) printk("Has wrong data direction %d\n", SCp->sc_data_direction);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1845) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1846) SCp->sc_data_direction = DMA_NONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1847) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1848)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1849) switch (SCp->cmnd[0]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1850) case REQUEST_SENSE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1851) /* clear the internal sense magic */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1852) SCp->cmnd[6] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1853) fallthrough;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1854) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1855) /* OK, get it from the command */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1856) switch(SCp->sc_data_direction) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1857) case DMA_BIDIRECTIONAL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1858) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1859) printk(KERN_ERR "53c700: Unknown command for data direction ");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1860) scsi_print_command(SCp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1861)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1862) move_ins = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1863) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1864) case DMA_NONE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1865) move_ins = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1866) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1867) case DMA_FROM_DEVICE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1868) move_ins = SCRIPT_MOVE_DATA_IN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1869) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1870) case DMA_TO_DEVICE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1871) move_ins = SCRIPT_MOVE_DATA_OUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1872) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1873) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1874) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1875)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1876) /* now build the scatter gather list */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1877) if(move_ins != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1878) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1879) int sg_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1880) dma_addr_t vPtr = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1881) struct scatterlist *sg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1882) __u32 count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1883)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1884) sg_count = scsi_dma_map(SCp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1885) BUG_ON(sg_count < 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1886)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1887) scsi_for_each_sg(SCp, sg, sg_count, i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1888) vPtr = sg_dma_address(sg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1889) count = sg_dma_len(sg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1890)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1891) slot->SG[i].ins = bS_to_host(move_ins | count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1892) DEBUG((" scatter block %d: move %d[%08x] from 0x%lx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1893) i, count, slot->SG[i].ins, (unsigned long)vPtr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1894) slot->SG[i].pAddr = bS_to_host(vPtr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1895) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1896) slot->SG[i].ins = bS_to_host(SCRIPT_RETURN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1897) slot->SG[i].pAddr = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1898) dma_sync_to_dev(hostdata, slot->SG, sizeof(slot->SG));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1899) DEBUG((" SETTING %p to %x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1900) (&slot->pSG[i].ins),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1901) slot->SG[i].ins));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1902) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1903) slot->resume_offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1904) slot->pCmd = dma_map_single(hostdata->dev, SCp->cmnd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1905) MAX_COMMAND_SIZE, DMA_TO_DEVICE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1906) NCR_700_start_command(SCp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1907) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1908) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1909)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1910) STATIC DEF_SCSI_QCMD(NCR_700_queuecommand)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1911)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1912) STATIC int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1913) NCR_700_abort(struct scsi_cmnd * SCp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1914) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1915) struct NCR_700_command_slot *slot;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1916)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1917) scmd_printk(KERN_INFO, SCp, "abort command\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1918)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1919) slot = (struct NCR_700_command_slot *)SCp->host_scribble;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1920)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1921) if(slot == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1922) /* no outstanding command to abort */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1923) return SUCCESS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1924) if(SCp->cmnd[0] == TEST_UNIT_READY) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1925) /* FIXME: This is because of a problem in the new
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1926) * error handler. When it is in error recovery, it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1927) * will send a TUR to a device it thinks may still be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1928) * showing a problem. If the TUR isn't responded to,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1929) * it will abort it and mark the device off line.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1930) * Unfortunately, it does no other error recovery, so
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1931) * this would leave us with an outstanding command
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1932) * occupying a slot. Rather than allow this to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1933) * happen, we issue a bus reset to force all
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1934) * outstanding commands to terminate here. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1935) NCR_700_internal_bus_reset(SCp->device->host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1936) /* still drop through and return failed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1937) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1938) return FAILED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1939)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1940) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1941)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1942) STATIC int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1943) NCR_700_host_reset(struct scsi_cmnd * SCp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1944) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1945) DECLARE_COMPLETION_ONSTACK(complete);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1946) struct NCR_700_Host_Parameters *hostdata =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1947) (struct NCR_700_Host_Parameters *)SCp->device->host->hostdata[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1948)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1949) scmd_printk(KERN_INFO, SCp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1950) "New error handler wants HOST reset, cmd %p\n\t", SCp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1951) scsi_print_command(SCp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1952)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1953) /* In theory, eh_complete should always be null because the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1954) * eh is single threaded, but just in case we're handling a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1955) * reset via sg or something */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1956) spin_lock_irq(SCp->device->host->host_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1957) while (hostdata->eh_complete != NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1958) spin_unlock_irq(SCp->device->host->host_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1959) msleep_interruptible(100);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1960) spin_lock_irq(SCp->device->host->host_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1961) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1962)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1963) hostdata->eh_complete = &complete;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1964) NCR_700_internal_bus_reset(SCp->device->host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1965) NCR_700_chip_reset(SCp->device->host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1966)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1967) spin_unlock_irq(SCp->device->host->host_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1968) wait_for_completion(&complete);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1969) spin_lock_irq(SCp->device->host->host_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1970)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1971) hostdata->eh_complete = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1972) /* Revalidate the transport parameters of the failing device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1973) if(hostdata->fast)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1974) spi_schedule_dv_device(SCp->device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1975)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1976) spin_unlock_irq(SCp->device->host->host_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1977) return SUCCESS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1978) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1979)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1980) STATIC void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1981) NCR_700_set_period(struct scsi_target *STp, int period)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1982) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1983) struct Scsi_Host *SHp = dev_to_shost(STp->dev.parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1984) struct NCR_700_Host_Parameters *hostdata =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1985) (struct NCR_700_Host_Parameters *)SHp->hostdata[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1986)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1987) if(!hostdata->fast)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1988) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1989)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1990) if(period < hostdata->min_period)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1991) period = hostdata->min_period;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1992)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1993) spi_period(STp) = period;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1994) spi_flags(STp) &= ~(NCR_700_DEV_NEGOTIATED_SYNC |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1995) NCR_700_DEV_BEGIN_SYNC_NEGOTIATION);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1996) spi_flags(STp) |= NCR_700_DEV_PRINT_SYNC_NEGOTIATION;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1997) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1998)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1999) STATIC void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2000) NCR_700_set_offset(struct scsi_target *STp, int offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2001) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2002) struct Scsi_Host *SHp = dev_to_shost(STp->dev.parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2003) struct NCR_700_Host_Parameters *hostdata =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2004) (struct NCR_700_Host_Parameters *)SHp->hostdata[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2005) int max_offset = hostdata->chip710
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2006) ? NCR_710_MAX_OFFSET : NCR_700_MAX_OFFSET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2007)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2008) if(!hostdata->fast)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2009) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2010)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2011) if(offset > max_offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2012) offset = max_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2013)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2014) /* if we're currently async, make sure the period is reasonable */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2015) if(spi_offset(STp) == 0 && (spi_period(STp) < hostdata->min_period ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2016) spi_period(STp) > 0xff))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2017) spi_period(STp) = hostdata->min_period;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2018)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2019) spi_offset(STp) = offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2020) spi_flags(STp) &= ~(NCR_700_DEV_NEGOTIATED_SYNC |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2021) NCR_700_DEV_BEGIN_SYNC_NEGOTIATION);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2022) spi_flags(STp) |= NCR_700_DEV_PRINT_SYNC_NEGOTIATION;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2023) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2024)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2025) STATIC int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2026) NCR_700_slave_alloc(struct scsi_device *SDp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2027) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2028) SDp->hostdata = kzalloc(sizeof(struct NCR_700_Device_Parameters),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2029) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2030)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2031) if (!SDp->hostdata)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2032) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2033)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2034) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2035) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2036)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2037) STATIC int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2038) NCR_700_slave_configure(struct scsi_device *SDp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2039) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2040) struct NCR_700_Host_Parameters *hostdata =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2041) (struct NCR_700_Host_Parameters *)SDp->host->hostdata[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2042)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2043) /* to do here: allocate memory; build a queue_full list */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2044) if(SDp->tagged_supported) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2045) scsi_change_queue_depth(SDp, NCR_700_DEFAULT_TAGS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2046) NCR_700_set_tag_neg_state(SDp, NCR_700_START_TAG_NEGOTIATION);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2047) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2048)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2049) if(hostdata->fast) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2050) /* Find the correct offset and period via domain validation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2051) if (!spi_initial_dv(SDp->sdev_target))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2052) spi_dv_device(SDp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2053) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2054) spi_offset(SDp->sdev_target) = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2055) spi_period(SDp->sdev_target) = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2056) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2057) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2058) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2059)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2060) STATIC void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2061) NCR_700_slave_destroy(struct scsi_device *SDp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2062) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2063) kfree(SDp->hostdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2064) SDp->hostdata = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2065) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2066)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2067) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2068) NCR_700_change_queue_depth(struct scsi_device *SDp, int depth)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2069) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2070) if (depth > NCR_700_MAX_TAGS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2071) depth = NCR_700_MAX_TAGS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2072) return scsi_change_queue_depth(SDp, depth);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2073) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2074)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2075) static ssize_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2076) NCR_700_show_active_tags(struct device *dev, struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2077) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2078) struct scsi_device *SDp = to_scsi_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2079)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2080) return snprintf(buf, 20, "%d\n", NCR_700_get_depth(SDp));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2081) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2082)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2083) static struct device_attribute NCR_700_active_tags_attr = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2084) .attr = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2085) .name = "active_tags",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2086) .mode = S_IRUGO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2087) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2088) .show = NCR_700_show_active_tags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2089) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2090)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2091) STATIC struct device_attribute *NCR_700_dev_attrs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2092) &NCR_700_active_tags_attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2093) NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2094) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2095)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2096) EXPORT_SYMBOL(NCR_700_detect);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2097) EXPORT_SYMBOL(NCR_700_release);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2098) EXPORT_SYMBOL(NCR_700_intr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2099)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2100) static struct spi_function_template NCR_700_transport_functions = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2101) .set_period = NCR_700_set_period,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2102) .show_period = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2103) .set_offset = NCR_700_set_offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2104) .show_offset = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2105) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2107) static int __init NCR_700_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2108) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2109) NCR_700_transport_template = spi_attach_transport(&NCR_700_transport_functions);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2110) if(!NCR_700_transport_template)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2111) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2112) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2113) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2115) static void __exit NCR_700_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2116) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2117) spi_release_transport(NCR_700_transport_template);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2118) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2120) module_init(NCR_700_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2121) module_exit(NCR_700_exit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2122)
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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