^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/scsi/arm/arxescsi.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 1997-2000 Russell King, Stefan Hanske
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * This driver is based on experimentation. Hence, it may have made
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * assumptions about the particular card that I have available, and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * may not be reliable!
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * Changelog:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * 30-08-1997 RMK 0.0.0 Created, READONLY version as cumana_2.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * 22-01-1998 RMK 0.0.1 Updated to 2.1.80
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * 15-04-1998 RMK 0.0.1 Only do PIO if FAS216 will allow it.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * 11-06-1998 SH 0.0.2 Changed to support ARXE 16-bit SCSI card
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * enabled writing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * 01-01-2000 SH 0.1.0 Added *real* pseudo dma writing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * (arxescsi_pseudo_dma_write)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * 02-04-2000 RMK 0.1.1 Updated for new error handling code.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * 22-10-2000 SH Updated for new registering scheme.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/blkdev.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <linux/ioport.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <linux/proc_fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <linux/unistd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include <linux/stat.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #include <asm/dma.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #include <asm/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #include <asm/ecard.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #include "../scsi.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #include <scsi/scsi_host.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #include "fas216.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) struct arxescsi_info {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) FAS216_Info info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) struct expansion_card *ec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) void __iomem *base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) #define DMADATA_OFFSET (0x200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) #define DMASTAT_OFFSET (0x600)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #define DMASTAT_DRQ (1 << 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #define CSTATUS_IRQ (1 << 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) #define VERSION "1.10 (23/01/2003 2.5.57)"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) * Function: int arxescsi_dma_setup(host, SCpnt, direction, min_type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) * Purpose : initialises DMA/PIO
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) * Params : host - host
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) * SCpnt - command
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) * direction - DMA on to/off of card
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) * min_type - minimum DMA support that we must have for this transfer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) * Returns : 0 if we should not set CMD_WITHDMA for transfer info command
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) static fasdmatype_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) arxescsi_dma_setup(struct Scsi_Host *host, struct scsi_pointer *SCp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) fasdmadir_t direction, fasdmatype_t min_type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) * We don't do real DMA
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) return fasdma_pseudo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) static void arxescsi_pseudo_dma_write(unsigned char *addr, void __iomem *base)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) __asm__ __volatile__(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) " stmdb sp!, {r0-r12}\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) " mov r3, %0\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) " mov r1, %1\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) " add r2, r1, #512\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) " mov r4, #256\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) ".loop_1: ldmia r3!, {r6, r8, r10, r12}\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) " mov r5, r6, lsl #16\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) " mov r7, r8, lsl #16\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) ".loop_2: ldrb r0, [r1, #1536]\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) " tst r0, #1\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) " beq .loop_2\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) " stmia r2, {r5-r8}\n\t"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) " mov r9, r10, lsl #16\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) " mov r11, r12, lsl #16\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) ".loop_3: ldrb r0, [r1, #1536]\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) " tst r0, #1\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) " beq .loop_3\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) " stmia r2, {r9-r12}\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) " subs r4, r4, #16\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) " bne .loop_1\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) " ldmia sp!, {r0-r12}\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) : "r" (addr), "r" (base));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) * Function: int arxescsi_dma_pseudo(host, SCpnt, direction, transfer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) * Purpose : handles pseudo DMA
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) * Params : host - host
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) * SCpnt - command
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) * direction - DMA on to/off of card
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) * transfer - minimum number of bytes we expect to transfer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) arxescsi_dma_pseudo(struct Scsi_Host *host, struct scsi_pointer *SCp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) fasdmadir_t direction, int transfer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) struct arxescsi_info *info = (struct arxescsi_info *)host->hostdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) unsigned int length, error = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) void __iomem *base = info->info.scsi.io_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) unsigned char *addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) length = SCp->this_residual;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) addr = SCp->ptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) if (direction == DMA_OUT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) unsigned int word;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) while (length > 256) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) if (readb(base + 0x80) & STAT_INT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) error = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) arxescsi_pseudo_dma_write(addr, base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) addr += 256;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) length -= 256;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) if (!error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) while (length > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) if (readb(base + 0x80) & STAT_INT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) if (!(readb(base + DMASTAT_OFFSET) & DMASTAT_DRQ))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) word = *addr | *(addr + 1) << 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) writew(word, base + DMADATA_OFFSET);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) if (length > 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) addr += 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) length -= 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) addr += 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) length -= 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) if (transfer && (transfer & 255)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) while (length >= 256) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) if (readb(base + 0x80) & STAT_INT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) error = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) if (!(readb(base + DMASTAT_OFFSET) & DMASTAT_DRQ))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) readsw(base + DMADATA_OFFSET, addr, 256 >> 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) addr += 256;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) length -= 256;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) if (!(error))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) while (length > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) unsigned long word;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) if (readb(base + 0x80) & STAT_INT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) if (!(readb(base + DMASTAT_OFFSET) & DMASTAT_DRQ))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) word = readw(base + DMADATA_OFFSET);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) *addr++ = word;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) if (--length > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) *addr++ = word >> 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) length --;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) }
^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)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) * Function: int arxescsi_dma_stop(host, SCpnt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) * Purpose : stops DMA/PIO
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) * Params : host - host
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) * SCpnt - command
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) static void arxescsi_dma_stop(struct Scsi_Host *host, struct scsi_pointer *SCp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) * no DMA to stop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) * Function: const char *arxescsi_info(struct Scsi_Host * host)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) * Purpose : returns a descriptive string about this interface,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) * Params : host - driver host structure to return info for.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) * Returns : pointer to a static buffer containing null terminated string.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) static const char *arxescsi_info(struct Scsi_Host *host)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) struct arxescsi_info *info = (struct arxescsi_info *)host->hostdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) static char string[150];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) sprintf(string, "%s (%s) in slot %d v%s",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) host->hostt->name, info->info.scsi.type, info->ec->slot_no,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) VERSION);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) return string;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) arxescsi_show_info(struct seq_file *m, struct Scsi_Host *host)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) struct arxescsi_info *info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) info = (struct arxescsi_info *)host->hostdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) seq_printf(m, "ARXE 16-bit SCSI driver v%s\n", VERSION);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) fas216_print_host(&info->info, m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) fas216_print_stats(&info->info, m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) fas216_print_devices(&info->info, m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) static struct scsi_host_template arxescsi_template = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) .show_info = arxescsi_show_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) .name = "ARXE SCSI card",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) .info = arxescsi_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) .queuecommand = fas216_noqueue_command,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) .eh_host_reset_handler = fas216_eh_host_reset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) .eh_bus_reset_handler = fas216_eh_bus_reset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) .eh_device_reset_handler = fas216_eh_device_reset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) .eh_abort_handler = fas216_eh_abort,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) .can_queue = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) .this_id = 7,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) .sg_tablesize = SG_ALL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) .dma_boundary = PAGE_SIZE - 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) .proc_name = "arxescsi",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) static int arxescsi_probe(struct expansion_card *ec, const struct ecard_id *id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) struct Scsi_Host *host;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) struct arxescsi_info *info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) void __iomem *base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) ret = ecard_request_resources(ec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) base = ecardm_iomap(ec, ECARD_RES_MEMC, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) if (!base) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) goto out_region;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) host = scsi_host_alloc(&arxescsi_template, sizeof(struct arxescsi_info));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) if (!host) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) goto out_region;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) info = (struct arxescsi_info *)host->hostdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) info->ec = ec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) info->base = base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) info->info.scsi.io_base = base + 0x2000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) info->info.scsi.irq = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) info->info.scsi.dma = NO_DMA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) info->info.scsi.io_shift = 5;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) info->info.ifcfg.clockrate = 24; /* MHz */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) info->info.ifcfg.select_timeout = 255;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) info->info.ifcfg.asyncperiod = 200; /* ns */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) info->info.ifcfg.sync_max_depth = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) info->info.ifcfg.cntl3 = CNTL3_FASTSCSI | CNTL3_FASTCLK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) info->info.ifcfg.disconnect_ok = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) info->info.ifcfg.wide_max_size = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) info->info.ifcfg.capabilities = FASCAP_PSEUDODMA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) info->info.dma.setup = arxescsi_dma_setup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) info->info.dma.pseudo = arxescsi_dma_pseudo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) info->info.dma.stop = arxescsi_dma_stop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) ec->irqaddr = base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) ec->irqmask = CSTATUS_IRQ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) ret = fas216_init(host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) goto out_unregister;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) ret = fas216_add(host, &ec->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) if (ret == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) fas216_release(host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) out_unregister:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) scsi_host_put(host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) out_region:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) ecard_release_resources(ec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) static void arxescsi_remove(struct expansion_card *ec)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) struct Scsi_Host *host = ecard_get_drvdata(ec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) ecard_set_drvdata(ec, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) fas216_remove(host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) fas216_release(host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) scsi_host_put(host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) ecard_release_resources(ec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) static const struct ecard_id arxescsi_cids[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) { MANU_ARXE, PROD_ARXE_SCSI },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) { 0xffff, 0xffff },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) static struct ecard_driver arxescsi_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) .probe = arxescsi_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) .remove = arxescsi_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) .id_table = arxescsi_cids,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) .drv = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) .name = "arxescsi",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) static int __init init_arxe_scsi_driver(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) return ecard_register_driver(&arxescsi_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) static void __exit exit_arxe_scsi_driver(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) ecard_remove_driver(&arxescsi_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) module_init(init_arxe_scsi_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) module_exit(exit_arxe_scsi_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) MODULE_AUTHOR("Stefan Hanske");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) MODULE_DESCRIPTION("ARXESCSI driver for Acorn machines");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358)
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
3 Commits
0 Branches
0 Tags