^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * linux/drivers/acorn/scsi/cumana_2.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 1997-2005 Russell King
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Changelog:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * 30-08-1997 RMK 0.0.0 Created, READONLY version.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * 22-01-1998 RMK 0.0.1 Updated to 2.1.80.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * 15-04-1998 RMK 0.0.1 Only do PIO if FAS216 will allow it.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * 02-05-1998 RMK 0.0.2 Updated & added DMA support.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * 27-06-1998 RMK Changed asm/delay.h to linux/delay.h
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * 18-08-1998 RMK 0.0.3 Fixed synchronous transfer depth.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * 02-04-2000 RMK 0.0.4 Updated for new error handling code.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/blkdev.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/ioport.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/proc_fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <linux/dma-mapping.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <linux/pgtable.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <asm/dma.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include <asm/ecard.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include <asm/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #include "../scsi.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #include <scsi/scsi_host.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #include "fas216.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #include "scsi.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #include <scsi/scsicam.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #define CUMANASCSI2_STATUS (0x0000)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #define STATUS_INT (1 << 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #define STATUS_DRQ (1 << 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #define STATUS_LATCHED (1 << 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #define CUMANASCSI2_ALATCH (0x0014)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #define ALATCH_ENA_INT (3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #define ALATCH_DIS_INT (2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) #define ALATCH_ENA_TERM (5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) #define ALATCH_DIS_TERM (4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) #define ALATCH_ENA_BIT32 (11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) #define ALATCH_DIS_BIT32 (10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #define ALATCH_ENA_DMA (13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #define ALATCH_DIS_DMA (12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #define ALATCH_DMA_OUT (15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) #define ALATCH_DMA_IN (14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) #define CUMANASCSI2_PSEUDODMA (0x0200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) #define CUMANASCSI2_FAS216_OFFSET (0x0300)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) #define CUMANASCSI2_FAS216_SHIFT 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) * Version
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) #define VERSION "1.00 (13/11/2002 2.5.47)"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) * Use term=0,1,0,0,0 to turn terminators on/off
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) static int term[MAX_ECARDS] = { 1, 1, 1, 1, 1, 1, 1, 1 };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) #define NR_SG 256
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) struct cumanascsi2_info {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) FAS216_Info info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) struct expansion_card *ec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) void __iomem *base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) unsigned int terms; /* Terminator state */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) struct scatterlist sg[NR_SG]; /* Scatter DMA list */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) #define CSTATUS_IRQ (1 << 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) #define CSTATUS_DRQ (1 << 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) /* Prototype: void cumanascsi_2_irqenable(ec, irqnr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) * Purpose : Enable interrupts on Cumana SCSI 2 card
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) * Params : ec - expansion card structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) * : irqnr - interrupt number
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) cumanascsi_2_irqenable(struct expansion_card *ec, int irqnr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) struct cumanascsi2_info *info = ec->irq_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) writeb(ALATCH_ENA_INT, info->base + CUMANASCSI2_ALATCH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) /* Prototype: void cumanascsi_2_irqdisable(ec, irqnr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) * Purpose : Disable interrupts on Cumana SCSI 2 card
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) * Params : ec - expansion card structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) * : irqnr - interrupt number
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) cumanascsi_2_irqdisable(struct expansion_card *ec, int irqnr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) struct cumanascsi2_info *info = ec->irq_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) writeb(ALATCH_DIS_INT, info->base + CUMANASCSI2_ALATCH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) static const expansioncard_ops_t cumanascsi_2_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) .irqenable = cumanascsi_2_irqenable,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) .irqdisable = cumanascsi_2_irqdisable,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) /* Prototype: void cumanascsi_2_terminator_ctl(host, on_off)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) * Purpose : Turn the Cumana SCSI 2 terminators on or off
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) * Params : host - card to turn on/off
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) * : on_off - !0 to turn on, 0 to turn off
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) cumanascsi_2_terminator_ctl(struct Scsi_Host *host, int on_off)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) struct cumanascsi2_info *info = (struct cumanascsi2_info *)host->hostdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) if (on_off) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) info->terms = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) writeb(ALATCH_ENA_TERM, info->base + CUMANASCSI2_ALATCH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) info->terms = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) writeb(ALATCH_DIS_TERM, info->base + CUMANASCSI2_ALATCH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) /* Prototype: void cumanascsi_2_intr(irq, *dev_id, *regs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) * Purpose : handle interrupts from Cumana SCSI 2 card
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) * Params : irq - interrupt number
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) * dev_id - user-defined (Scsi_Host structure)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) static irqreturn_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) cumanascsi_2_intr(int irq, void *dev_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) struct cumanascsi2_info *info = dev_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) return fas216_intr(&info->info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) /* Prototype: fasdmatype_t cumanascsi_2_dma_setup(host, SCpnt, direction, min_type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) * Purpose : initialises DMA/PIO
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) * Params : host - host
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) * SCpnt - command
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) * direction - DMA on to/off of card
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) * min_type - minimum DMA support that we must have for this transfer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) * Returns : type of transfer to be performed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) static fasdmatype_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) cumanascsi_2_dma_setup(struct Scsi_Host *host, struct scsi_pointer *SCp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) fasdmadir_t direction, fasdmatype_t min_type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) struct cumanascsi2_info *info = (struct cumanascsi2_info *)host->hostdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) struct device *dev = scsi_get_device(host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) int dmach = info->info.scsi.dma;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) writeb(ALATCH_DIS_DMA, info->base + CUMANASCSI2_ALATCH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) if (dmach != NO_DMA &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) (min_type == fasdma_real_all || SCp->this_residual >= 512)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) int bufs, map_dir, dma_dir, alatch_dir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) bufs = copy_SCp_to_sg(&info->sg[0], SCp, NR_SG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) if (direction == DMA_OUT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) map_dir = DMA_TO_DEVICE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) dma_dir = DMA_MODE_WRITE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) alatch_dir = ALATCH_DMA_OUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) map_dir = DMA_FROM_DEVICE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) dma_dir = DMA_MODE_READ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) alatch_dir = ALATCH_DMA_IN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) dma_map_sg(dev, info->sg, bufs, map_dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) disable_dma(dmach);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) set_dma_sg(dmach, info->sg, bufs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) writeb(alatch_dir, info->base + CUMANASCSI2_ALATCH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) set_dma_mode(dmach, dma_dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) enable_dma(dmach);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) writeb(ALATCH_ENA_DMA, info->base + CUMANASCSI2_ALATCH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) writeb(ALATCH_DIS_BIT32, info->base + CUMANASCSI2_ALATCH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) return fasdma_real_all;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) * If we're not doing DMA,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) * we'll do pseudo DMA
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) return fasdma_pio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) * Prototype: void cumanascsi_2_dma_pseudo(host, SCpnt, direction, transfer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) * Purpose : handles pseudo DMA
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) * Params : host - host
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) * SCpnt - command
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) * direction - DMA on to/off of card
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) * transfer - minimum number of bytes we expect to transfer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) cumanascsi_2_dma_pseudo(struct Scsi_Host *host, struct scsi_pointer *SCp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) fasdmadir_t direction, int transfer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) struct cumanascsi2_info *info = (struct cumanascsi2_info *)host->hostdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) unsigned int length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) unsigned char *addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) length = SCp->this_residual;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) addr = SCp->ptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) if (direction == DMA_OUT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) #if 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) while (length > 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) unsigned long word;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) unsigned int status = readb(info->base + CUMANASCSI2_STATUS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) if (status & STATUS_INT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) goto end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) if (!(status & STATUS_DRQ))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) word = *addr | *(addr + 1) << 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) writew(word, info->base + CUMANASCSI2_PSEUDODMA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) addr += 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) length -= 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) printk ("PSEUDO_OUT???\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) if (transfer && (transfer & 255)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) while (length >= 256) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) unsigned int status = readb(info->base + CUMANASCSI2_STATUS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) if (status & STATUS_INT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) if (!(status & STATUS_DRQ))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) readsw(info->base + CUMANASCSI2_PSEUDODMA,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) addr, 256 >> 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) addr += 256;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) length -= 256;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) while (length > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) unsigned long word;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) unsigned int status = readb(info->base + CUMANASCSI2_STATUS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) if (status & STATUS_INT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) if (!(status & STATUS_DRQ))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) word = readw(info->base + CUMANASCSI2_PSEUDODMA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) *addr++ = word;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) if (--length > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) *addr++ = word >> 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) length --;
^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) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) /* Prototype: int cumanascsi_2_dma_stop(host, SCpnt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) * Purpose : stops DMA/PIO
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) * Params : host - host
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) * SCpnt - command
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) cumanascsi_2_dma_stop(struct Scsi_Host *host, struct scsi_pointer *SCp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) struct cumanascsi2_info *info = (struct cumanascsi2_info *)host->hostdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) if (info->info.scsi.dma != NO_DMA) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) writeb(ALATCH_DIS_DMA, info->base + CUMANASCSI2_ALATCH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) disable_dma(info->info.scsi.dma);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) /* Prototype: const char *cumanascsi_2_info(struct Scsi_Host * host)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) * Purpose : returns a descriptive string about this interface,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) * Params : host - driver host structure to return info for.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) * Returns : pointer to a static buffer containing null terminated string.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) const char *cumanascsi_2_info(struct Scsi_Host *host)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) struct cumanascsi2_info *info = (struct cumanascsi2_info *)host->hostdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) static char string[150];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) sprintf(string, "%s (%s) in slot %d v%s terminators o%s",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) host->hostt->name, info->info.scsi.type, info->ec->slot_no,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) VERSION, info->terms ? "n" : "ff");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) return string;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) /* Prototype: int cumanascsi_2_set_proc_info(struct Scsi_Host *host, char *buffer, int length)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) * Purpose : Set a driver specific function
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) * Params : host - host to setup
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) * : buffer - buffer containing string describing operation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) * : length - length of string
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) * Returns : -EINVAL, or 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) cumanascsi_2_set_proc_info(struct Scsi_Host *host, char *buffer, int length)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) int ret = length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) if (length >= 11 && strncmp(buffer, "CUMANASCSI2", 11) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) buffer += 11;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) length -= 11;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) if (length >= 5 && strncmp(buffer, "term=", 5) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) if (buffer[5] == '1')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) cumanascsi_2_terminator_ctl(host, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) else if (buffer[5] == '0')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) cumanascsi_2_terminator_ctl(host, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) static int cumanascsi_2_show_info(struct seq_file *m, struct Scsi_Host *host)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) struct cumanascsi2_info *info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) info = (struct cumanascsi2_info *)host->hostdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) seq_printf(m, "Cumana SCSI II driver v%s\n", VERSION);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) fas216_print_host(&info->info, m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) seq_printf(m, "Term : o%s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) info->terms ? "n" : "ff");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) fas216_print_stats(&info->info, m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) fas216_print_devices(&info->info, m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) static struct scsi_host_template cumanascsi2_template = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) .module = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) .show_info = cumanascsi_2_show_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) .write_info = cumanascsi_2_set_proc_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) .name = "Cumana SCSI II",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) .info = cumanascsi_2_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) .queuecommand = fas216_queue_command,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) .eh_host_reset_handler = fas216_eh_host_reset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) .eh_bus_reset_handler = fas216_eh_bus_reset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) .eh_device_reset_handler = fas216_eh_device_reset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) .eh_abort_handler = fas216_eh_abort,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) .can_queue = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) .this_id = 7,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) .sg_tablesize = SG_MAX_SEGMENTS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) .dma_boundary = IOMD_DMA_BOUNDARY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) .proc_name = "cumanascsi2",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) static int cumanascsi2_probe(struct expansion_card *ec,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) const struct ecard_id *id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) struct Scsi_Host *host;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) struct cumanascsi2_info *info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) void __iomem *base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) ret = ecard_request_resources(ec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) base = ecardm_iomap(ec, ECARD_RES_MEMC, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) if (!base) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) goto out_region;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) host = scsi_host_alloc(&cumanascsi2_template,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) sizeof(struct cumanascsi2_info));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) if (!host) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) goto out_region;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) ecard_set_drvdata(ec, host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) info = (struct cumanascsi2_info *)host->hostdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) info->ec = ec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) info->base = base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) cumanascsi_2_terminator_ctl(host, term[ec->slot_no]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) info->info.scsi.io_base = base + CUMANASCSI2_FAS216_OFFSET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) info->info.scsi.io_shift = CUMANASCSI2_FAS216_SHIFT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) info->info.scsi.irq = ec->irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) info->info.scsi.dma = ec->dma;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) info->info.ifcfg.clockrate = 40; /* MHz */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) info->info.ifcfg.select_timeout = 255;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) info->info.ifcfg.asyncperiod = 200; /* ns */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) info->info.ifcfg.sync_max_depth = 7;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) info->info.ifcfg.cntl3 = CNTL3_BS8 | CNTL3_FASTSCSI | CNTL3_FASTCLK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) info->info.ifcfg.disconnect_ok = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) info->info.ifcfg.wide_max_size = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) info->info.ifcfg.capabilities = FASCAP_PSEUDODMA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) info->info.dma.setup = cumanascsi_2_dma_setup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) info->info.dma.pseudo = cumanascsi_2_dma_pseudo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) info->info.dma.stop = cumanascsi_2_dma_stop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) ec->irqaddr = info->base + CUMANASCSI2_STATUS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) ec->irqmask = STATUS_INT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) ecard_setirq(ec, &cumanascsi_2_ops, info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) ret = fas216_init(host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) goto out_free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) ret = request_irq(ec->irq, cumanascsi_2_intr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) 0, "cumanascsi2", info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) printk("scsi%d: IRQ%d not free: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) host->host_no, ec->irq, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) goto out_release;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) if (info->info.scsi.dma != NO_DMA) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) if (request_dma(info->info.scsi.dma, "cumanascsi2")) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) printk("scsi%d: DMA%d not free, using PIO\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) host->host_no, info->info.scsi.dma);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) info->info.scsi.dma = NO_DMA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) set_dma_speed(info->info.scsi.dma, 180);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) info->info.ifcfg.capabilities |= FASCAP_DMA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) ret = fas216_add(host, &ec->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) if (ret == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) if (info->info.scsi.dma != NO_DMA)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) free_dma(info->info.scsi.dma);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) free_irq(ec->irq, info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) out_release:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) fas216_release(host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) out_free:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) scsi_host_put(host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) out_region:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) ecard_release_resources(ec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) static void cumanascsi2_remove(struct expansion_card *ec)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) struct Scsi_Host *host = ecard_get_drvdata(ec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) struct cumanascsi2_info *info = (struct cumanascsi2_info *)host->hostdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) ecard_set_drvdata(ec, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) fas216_remove(host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) if (info->info.scsi.dma != NO_DMA)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) free_dma(info->info.scsi.dma);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) free_irq(ec->irq, info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) fas216_release(host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) scsi_host_put(host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) ecard_release_resources(ec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) static const struct ecard_id cumanascsi2_cids[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) { MANU_CUMANA, PROD_CUMANA_SCSI_2 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) { 0xffff, 0xffff },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) static struct ecard_driver cumanascsi2_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) .probe = cumanascsi2_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) .remove = cumanascsi2_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) .id_table = cumanascsi2_cids,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) .drv = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) .name = "cumanascsi2",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) static int __init cumanascsi2_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) return ecard_register_driver(&cumanascsi2_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) static void __exit cumanascsi2_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) ecard_remove_driver(&cumanascsi2_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) module_init(cumanascsi2_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) module_exit(cumanascsi2_exit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) MODULE_AUTHOR("Russell King");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) MODULE_DESCRIPTION("Cumana SCSI-2 driver for Acorn machines");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) module_param_array(term, int, NULL, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) MODULE_PARM_DESC(term, "SCSI bus termination");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) MODULE_LICENSE("GPL");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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