| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Finn Thain | 1099 | 72.26% | 22 | 66.67% |
| Linus Torvalds (pre-git) | 237 | 15.58% | 4 | 12.12% |
| Geert Uytterhoeven | 172 | 11.31% | 1 | 3.03% |
| Christoph Hellwig | 6 | 0.39% | 2 | 6.06% |
| Hannes Reinecke | 4 | 0.26% | 1 | 3.03% |
| Adrian Bunk | 1 | 0.07% | 1 | 3.03% |
| Arjan van de Ven | 1 | 0.07% | 1 | 3.03% |
| Thomas Gleixner | 1 | 0.07% | 1 | 3.03% |
| Total | 1521 | 33 |
// SPDX-License-Identifier: GPL-2.0-only /* * Generic Macintosh NCR5380 driver * * Copyright 1998, Michael Schmitz <mschmitz@lbl.gov> * * derived in part from: */ /* * Generic Generic NCR5380 driver * * Copyright 1995, Russell King */ #include <linux/types.h> #include <linux/module.h> #include <linux/ioport.h> #include <linux/init.h> #include <linux/blkdev.h> #include <linux/interrupt.h> #include <linux/platform_device.h> #include <asm/hwtest.h> #include <asm/io.h> #include <asm/macints.h> #include <asm/setup.h> #include <scsi/scsi_host.h> /* Definitions for the core NCR5380 driver. */ #define NCR5380_implementation_fields int pdma_residual #define NCR5380_read(reg) in_8(hostdata->io + ((reg) << 4)) #define NCR5380_write(reg, value) out_8(hostdata->io + ((reg) << 4), value) #define NCR5380_dma_xfer_len macscsi_dma_xfer_len #define NCR5380_dma_recv_setup macscsi_pread #define NCR5380_dma_send_setup macscsi_pwrite #define NCR5380_dma_residual macscsi_dma_residual #define NCR5380_intr macscsi_intr #define NCR5380_queue_command macscsi_queue_command #define NCR5380_abort macscsi_abort #define NCR5380_host_reset macscsi_host_reset #define NCR5380_info macscsi_info #include "NCR5380.h" static int setup_can_queue = -1; module_param(setup_can_queue, int, 0); static int setup_cmd_per_lun = -1; module_param(setup_cmd_per_lun, int, 0); static int setup_sg_tablesize = -1; module_param(setup_sg_tablesize, int, 0); static int setup_use_pdma = -1; module_param(setup_use_pdma, int, 0); static int setup_hostid = -1; module_param(setup_hostid, int, 0); static int setup_toshiba_delay = -1; module_param(setup_toshiba_delay, int, 0); #ifndef MODULE static int __init mac_scsi_setup(char *str) { int ints[8]; (void)get_options(str, ARRAY_SIZE(ints), ints); if (ints[0] < 1) { pr_err("Usage: mac5380=<can_queue>[,<cmd_per_lun>[,<sg_tablesize>[,<hostid>[,<use_tags>[,<use_pdma>[,<toshiba_delay>]]]]]]\n"); return 0; } if (ints[0] >= 1) setup_can_queue = ints[1]; if (ints[0] >= 2) setup_cmd_per_lun = ints[2]; if (ints[0] >= 3) setup_sg_tablesize = ints[3]; if (ints[0] >= 4) setup_hostid = ints[4]; /* ints[5] (use_tagged_queuing) is ignored */ if (ints[0] >= 6) setup_use_pdma = ints[6]; if (ints[0] >= 7) setup_toshiba_delay = ints[7]; return 1; } __setup("mac5380=", mac_scsi_setup); #endif /* !MODULE */ /* Pseudo DMA asm originally by Ove Edlund */ #define CP_IO_TO_MEM(s,d,n) \ __asm__ __volatile__ \ (" cmp.w #4,%2\n" \ " bls 8f\n" \ " move.w %1,%%d0\n" \ " neg.b %%d0\n" \ " and.w #3,%%d0\n" \ " sub.w %%d0,%2\n" \ " bra 2f\n" \ " 1: move.b (%0),(%1)+\n" \ " 2: dbf %%d0,1b\n" \ " move.w %2,%%d0\n" \ " lsr.w #5,%%d0\n" \ " bra 4f\n" \ " 3: move.l (%0),(%1)+\n" \ "31: move.l (%0),(%1)+\n" \ "32: move.l (%0),(%1)+\n" \ "33: move.l (%0),(%1)+\n" \ "34: move.l (%0),(%1)+\n" \ "35: move.l (%0),(%1)+\n" \ "36: move.l (%0),(%1)+\n" \ "37: move.l (%0),(%1)+\n" \ " 4: dbf %%d0,3b\n" \ " move.w %2,%%d0\n" \ " lsr.w #2,%%d0\n" \ " and.w #7,%%d0\n" \ " bra 6f\n" \ " 5: move.l (%0),(%1)+\n" \ " 6: dbf %%d0,5b\n" \ " and.w #3,%2\n" \ " bra 8f\n" \ " 7: move.b (%0),(%1)+\n" \ " 8: dbf %2,7b\n" \ " moveq.l #0, %2\n" \ " 9: \n" \ ".section .fixup,\"ax\"\n" \ " .even\n" \ "91: moveq.l #1, %2\n" \ " jra 9b\n" \ "94: moveq.l #4, %2\n" \ " jra 9b\n" \ ".previous\n" \ ".section __ex_table,\"a\"\n" \ " .align 4\n" \ " .long 1b,91b\n" \ " .long 3b,94b\n" \ " .long 31b,94b\n" \ " .long 32b,94b\n" \ " .long 33b,94b\n" \ " .long 34b,94b\n" \ " .long 35b,94b\n" \ " .long 36b,94b\n" \ " .long 37b,94b\n" \ " .long 5b,94b\n" \ " .long 7b,91b\n" \ ".previous" \ : "=a"(s), "=a"(d), "=d"(n) \ : "0"(s), "1"(d), "2"(n) \ : "d0") static inline int macscsi_pread(struct NCR5380_hostdata *hostdata, unsigned char *dst, int len) { u8 __iomem *s = hostdata->pdma_io + (INPUT_DATA_REG << 4); unsigned char *d = dst; int n = len; int transferred; while (!NCR5380_poll_politely(hostdata, BUS_AND_STATUS_REG, BASR_DRQ | BASR_PHASE_MATCH, BASR_DRQ | BASR_PHASE_MATCH, HZ / 64)) { CP_IO_TO_MEM(s, d, n); transferred = d - dst - n; hostdata->pdma_residual = len - transferred; /* No bus error. */ if (n == 0) return 0; /* Target changed phase early? */ if (NCR5380_poll_politely2(hostdata, STATUS_REG, SR_REQ, SR_REQ, BUS_AND_STATUS_REG, BASR_ACK, BASR_ACK, HZ / 64) < 0) scmd_printk(KERN_ERR, hostdata->connected, "%s: !REQ and !ACK\n", __func__); if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_PHASE_MATCH)) return 0; dsprintk(NDEBUG_PSEUDO_DMA, hostdata->host, "%s: bus error (%d/%d)\n", __func__, transferred, len); NCR5380_dprint(NDEBUG_PSEUDO_DMA, hostdata->host); d = dst + transferred; n = len - transferred; } scmd_printk(KERN_ERR, hostdata->connected, "%s: phase mismatch or !DRQ\n", __func__); NCR5380_dprint(NDEBUG_PSEUDO_DMA, hostdata->host); return -1; } #define CP_MEM_TO_IO(s,d,n) \ __asm__ __volatile__ \ (" cmp.w #4,%2\n" \ " bls 8f\n" \ " move.w %0,%%d0\n" \ " neg.b %%d0\n" \ " and.w #3,%%d0\n" \ " sub.w %%d0,%2\n" \ " bra 2f\n" \ " 1: move.b (%0)+,(%1)\n" \ " 2: dbf %%d0,1b\n" \ " move.w %2,%%d0\n" \ " lsr.w #5,%%d0\n" \ " bra 4f\n" \ " 3: move.l (%0)+,(%1)\n" \ "31: move.l (%0)+,(%1)\n" \ "32: move.l (%0)+,(%1)\n" \ "33: move.l (%0)+,(%1)\n" \ "34: move.l (%0)+,(%1)\n" \ "35: move.l (%0)+,(%1)\n" \ "36: move.l (%0)+,(%1)\n" \ "37: move.l (%0)+,(%1)\n" \ " 4: dbf %%d0,3b\n" \ " move.w %2,%%d0\n" \ " lsr.w #2,%%d0\n" \ " and.w #7,%%d0\n" \ " bra 6f\n" \ " 5: move.l (%0)+,(%1)\n" \ " 6: dbf %%d0,5b\n" \ " and.w #3,%2\n" \ " bra 8f\n" \ " 7: move.b (%0)+,(%1)\n" \ " 8: dbf %2,7b\n" \ " moveq.l #0, %2\n" \ " 9: \n" \ ".section .fixup,\"ax\"\n" \ " .even\n" \ "91: moveq.l #1, %2\n" \ " jra 9b\n" \ "94: moveq.l #4, %2\n" \ " jra 9b\n" \ ".previous\n" \ ".section __ex_table,\"a\"\n" \ " .align 4\n" \ " .long 1b,91b\n" \ " .long 3b,94b\n" \ " .long 31b,94b\n" \ " .long 32b,94b\n" \ " .long 33b,94b\n" \ " .long 34b,94b\n" \ " .long 35b,94b\n" \ " .long 36b,94b\n" \ " .long 37b,94b\n" \ " .long 5b,94b\n" \ " .long 7b,91b\n" \ ".previous" \ : "=a"(s), "=a"(d), "=d"(n) \ : "0"(s), "1"(d), "2"(n) \ : "d0") static inline int macscsi_pwrite(struct NCR5380_hostdata *hostdata, unsigned char *src, int len) { unsigned char *s = src; u8 __iomem *d = hostdata->pdma_io + (OUTPUT_DATA_REG << 4); int n = len; int transferred; while (!NCR5380_poll_politely(hostdata, BUS_AND_STATUS_REG, BASR_DRQ | BASR_PHASE_MATCH, BASR_DRQ | BASR_PHASE_MATCH, HZ / 64)) { CP_MEM_TO_IO(s, d, n); transferred = s - src - n; hostdata->pdma_residual = len - transferred; /* Target changed phase early? */ if (NCR5380_poll_politely2(hostdata, STATUS_REG, SR_REQ, SR_REQ, BUS_AND_STATUS_REG, BASR_ACK, BASR_ACK, HZ / 64) < 0) scmd_printk(KERN_ERR, hostdata->connected, "%s: !REQ and !ACK\n", __func__); if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_PHASE_MATCH)) return 0; /* No bus error. */ if (n == 0) { if (NCR5380_poll_politely(hostdata, TARGET_COMMAND_REG, TCR_LAST_BYTE_SENT, TCR_LAST_BYTE_SENT, HZ / 64) < 0) scmd_printk(KERN_ERR, hostdata->connected, "%s: Last Byte Sent timeout\n", __func__); return 0; } dsprintk(NDEBUG_PSEUDO_DMA, hostdata->host, "%s: bus error (%d/%d)\n", __func__, transferred, len); NCR5380_dprint(NDEBUG_PSEUDO_DMA, hostdata->host); s = src + transferred; n = len - transferred; } scmd_printk(KERN_ERR, hostdata->connected, "%s: phase mismatch or !DRQ\n", __func__); NCR5380_dprint(NDEBUG_PSEUDO_DMA, hostdata->host); return -1; } static int macscsi_dma_xfer_len(struct NCR5380_hostdata *hostdata, struct scsi_cmnd *cmd) { if (hostdata->flags & FLAG_NO_PSEUDO_DMA || cmd->SCp.this_residual < 16) return 0; return cmd->SCp.this_residual; } static int macscsi_dma_residual(struct NCR5380_hostdata *hostdata) { return hostdata->pdma_residual; } #include "NCR5380.c" #define DRV_MODULE_NAME "mac_scsi" #define PFX DRV_MODULE_NAME ": " static struct scsi_host_template mac_scsi_template = { .module = THIS_MODULE, .proc_name = DRV_MODULE_NAME, .name = "Macintosh NCR5380 SCSI", .info = macscsi_info, .queuecommand = macscsi_queue_command, .eh_abort_handler = macscsi_abort, .eh_host_reset_handler = macscsi_host_reset, .can_queue = 16, .this_id = 7, .sg_tablesize = 1, .cmd_per_lun = 2, .dma_boundary = PAGE_SIZE - 1, .cmd_size = NCR5380_CMD_SIZE, .max_sectors = 128, }; static int __init mac_scsi_probe(struct platform_device *pdev) { struct Scsi_Host *instance; struct NCR5380_hostdata *hostdata; int error; int host_flags = 0; struct resource *irq, *pio_mem, *pdma_mem = NULL; pio_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!pio_mem) return -ENODEV; pdma_mem = platform_get_resource(pdev, IORESOURCE_MEM, 1); irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0); if (!hwreg_present((unsigned char *)pio_mem->start + (STATUS_REG << 4))) { pr_info(PFX "no device detected at %pap\n", &pio_mem->start); return -ENODEV; } if (setup_can_queue > 0) mac_scsi_template.can_queue = setup_can_queue; if (setup_cmd_per_lun > 0) mac_scsi_template.cmd_per_lun = setup_cmd_per_lun; if (setup_sg_tablesize >= 0) mac_scsi_template.sg_tablesize = setup_sg_tablesize; if (setup_hostid >= 0) mac_scsi_template.this_id = setup_hostid & 7; instance = scsi_host_alloc(&mac_scsi_template, sizeof(struct NCR5380_hostdata)); if (!instance) return -ENOMEM; if (irq) instance->irq = irq->start; else instance->irq = NO_IRQ; hostdata = shost_priv(instance); hostdata->base = pio_mem->start; hostdata->io = (u8 __iomem *)pio_mem->start; if (pdma_mem && setup_use_pdma) hostdata->pdma_io = (u8 __iomem *)pdma_mem->start; else host_flags |= FLAG_NO_PSEUDO_DMA; host_flags |= setup_toshiba_delay > 0 ? FLAG_TOSHIBA_DELAY : 0; error = NCR5380_init(instance, host_flags | FLAG_LATE_DMA_SETUP); if (error) goto fail_init; if (instance->irq != NO_IRQ) { error = request_irq(instance->irq, macscsi_intr, IRQF_SHARED, "NCR5380", instance); if (error) goto fail_irq; } NCR5380_maybe_reset_bus(instance); error = scsi_add_host(instance, NULL); if (error) goto fail_host; platform_set_drvdata(pdev, instance); scsi_scan_host(instance); return 0; fail_host: if (instance->irq != NO_IRQ) free_irq(instance->irq, instance); fail_irq: NCR5380_exit(instance); fail_init: scsi_host_put(instance); return error; } static int __exit mac_scsi_remove(struct platform_device *pdev) { struct Scsi_Host *instance = platform_get_drvdata(pdev); scsi_remove_host(instance); if (instance->irq != NO_IRQ) free_irq(instance->irq, instance); NCR5380_exit(instance); scsi_host_put(instance); return 0; } static struct platform_driver mac_scsi_driver = { .remove = __exit_p(mac_scsi_remove), .driver = { .name = DRV_MODULE_NAME, }, }; module_platform_driver_probe(mac_scsi_driver, mac_scsi_probe); MODULE_ALIAS("platform:" DRV_MODULE_NAME); MODULE_LICENSE("GPL");
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