diff options
Diffstat (limited to 'drivers/scsi/53c700.c')
| -rw-r--r-- | drivers/scsi/53c700.c | 200 |
1 files changed, 101 insertions, 99 deletions
diff --git a/drivers/scsi/53c700.c b/drivers/scsi/53c700.c index 128d658d472a..71b7ac027f48 100644 --- a/drivers/scsi/53c700.c +++ b/drivers/scsi/53c700.c @@ -1,23 +1,10 @@ -/* -*- mode: c; c-basic-offset: 8 -*- */ +// SPDX-License-Identifier: GPL-2.0-or-later /* NCR (or Symbios) 53c700 and 53c700-66 Driver * * Copyright (C) 2001 by James.Bottomley@HansenPartnership.com **----------------------------------------------------------------------------- ** -** This program is free software; you can redistribute it and/or modify -** it under the terms of the GNU General Public License as published by -** the Free Software Foundation; either version 2 of the License, or -** (at your option) any later version. -** -** This program is distributed in the hope that it will be useful, -** but WITHOUT ANY WARRANTY; without even the implied warranty of -** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -** GNU General Public License for more details. -** -** You should have received a copy of the GNU General Public License -** along with this program; if not, write to the Free Software -** Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. ** **----------------------------------------------------------------------------- */ @@ -128,9 +115,9 @@ #include <linux/module.h> #include <linux/interrupt.h> #include <linux/device.h> +#include <linux/pgtable.h> #include <asm/dma.h> #include <asm/io.h> -#include <asm/pgtable.h> #include <asm/byteorder.h> #include <scsi/scsi.h> @@ -171,12 +158,13 @@ STATIC int NCR_700_abort(struct scsi_cmnd * SCpnt); STATIC int NCR_700_host_reset(struct scsi_cmnd * SCpnt); STATIC void NCR_700_chip_setup(struct Scsi_Host *host); STATIC void NCR_700_chip_reset(struct Scsi_Host *host); -STATIC int NCR_700_slave_alloc(struct scsi_device *SDpnt); -STATIC int NCR_700_slave_configure(struct scsi_device *SDpnt); -STATIC void NCR_700_slave_destroy(struct scsi_device *SDpnt); +STATIC int NCR_700_sdev_init(struct scsi_device *SDpnt); +STATIC int NCR_700_sdev_configure(struct scsi_device *SDpnt, + struct queue_limits *lim); +STATIC void NCR_700_sdev_destroy(struct scsi_device *SDpnt); static int NCR_700_change_queue_depth(struct scsi_device *SDpnt, int depth); -STATIC struct device_attribute *NCR_700_dev_attrs[]; +STATIC const struct attribute_group *NCR_700_dev_groups[]; STATIC struct scsi_transport_template *NCR_700_transport_template = NULL; @@ -281,6 +269,27 @@ NCR_700_get_SXFER(struct scsi_device *SDp) spi_period(SDp->sdev_target)); } +static inline dma_addr_t virt_to_dma(struct NCR_700_Host_Parameters *h, void *p) +{ + return h->pScript + ((uintptr_t)p - (uintptr_t)h->script); +} + +static inline void dma_sync_to_dev(struct NCR_700_Host_Parameters *h, + void *addr, size_t size) +{ + if (h->noncoherent) + dma_sync_single_for_device(h->dev, virt_to_dma(h, addr), + size, DMA_BIDIRECTIONAL); +} + +static inline void dma_sync_from_dev(struct NCR_700_Host_Parameters *h, + void *addr, size_t size) +{ + if (h->noncoherent) + dma_sync_single_for_device(h->dev, virt_to_dma(h, addr), size, + DMA_BIDIRECTIONAL); +} + struct Scsi_Host * NCR_700_detect(struct scsi_host_template *tpnt, struct NCR_700_Host_Parameters *hostdata, struct device *dev) @@ -292,12 +301,16 @@ NCR_700_detect(struct scsi_host_template *tpnt, static int banner = 0; int j; - if(tpnt->sdev_attrs == NULL) - tpnt->sdev_attrs = NCR_700_dev_attrs; + if (tpnt->sdev_groups == NULL) + tpnt->sdev_groups = NCR_700_dev_groups; - memory = dma_alloc_attrs(hostdata->dev, TOTAL_MEM_SIZE, &pScript, - GFP_KERNEL, DMA_ATTR_NON_CONSISTENT); - if(memory == NULL) { + memory = dma_alloc_coherent(dev, TOTAL_MEM_SIZE, &pScript, GFP_KERNEL); + if (!memory) { + hostdata->noncoherent = 1; + memory = dma_alloc_noncoherent(dev, TOTAL_MEM_SIZE, &pScript, + DMA_BIDIRECTIONAL, GFP_KERNEL); + } + if (!memory) { printk(KERN_ERR "53c700: Failed to allocate memory for driver, detaching\n"); return NULL; } @@ -318,9 +331,9 @@ NCR_700_detect(struct scsi_host_template *tpnt, tpnt->can_queue = NCR_700_COMMAND_SLOTS_PER_HOST; tpnt->sg_tablesize = NCR_700_SG_SEGMENTS; tpnt->cmd_per_lun = NCR_700_CMD_PER_LUN; - tpnt->slave_configure = NCR_700_slave_configure; - tpnt->slave_destroy = NCR_700_slave_destroy; - tpnt->slave_alloc = NCR_700_slave_alloc; + tpnt->sdev_configure = NCR_700_sdev_configure; + tpnt->sdev_destroy = NCR_700_sdev_destroy; + tpnt->sdev_init = NCR_700_sdev_init; tpnt->change_queue_depth = NCR_700_change_queue_depth; if(tpnt->name == NULL) @@ -351,11 +364,11 @@ NCR_700_detect(struct scsi_host_template *tpnt, for (j = 0; j < PATCHES; j++) script[LABELPATCHES[j]] = bS_to_host(pScript + SCRIPT[LABELPATCHES[j]]); /* now patch up fixed addresses. */ - script_patch_32(hostdata->dev, script, MessageLocation, + script_patch_32(hostdata, script, MessageLocation, pScript + MSGOUT_OFFSET); - script_patch_32(hostdata->dev, script, StatusAddress, + script_patch_32(hostdata, script, StatusAddress, pScript + STATUS_OFFSET); - script_patch_32(hostdata->dev, script, ReceiveMsgAddress, + script_patch_32(hostdata, script, ReceiveMsgAddress, pScript + MSGIN_OFFSET); hostdata->script = script; @@ -407,8 +420,13 @@ NCR_700_release(struct Scsi_Host *host) struct NCR_700_Host_Parameters *hostdata = (struct NCR_700_Host_Parameters *)host->hostdata[0]; - dma_free_attrs(hostdata->dev, TOTAL_MEM_SIZE, hostdata->script, - hostdata->pScript, DMA_ATTR_NON_CONSISTENT); + if (hostdata->noncoherent) + dma_free_noncoherent(hostdata->dev, TOTAL_MEM_SIZE, + hostdata->script, hostdata->pScript, + DMA_BIDIRECTIONAL); + else + dma_free_coherent(hostdata->dev, TOTAL_MEM_SIZE, + hostdata->script, hostdata->pScript); return 1; } @@ -617,7 +635,7 @@ NCR_700_scsi_done(struct NCR_700_Host_Parameters *hostdata, SCp->host_scribble = NULL; SCp->result = result; - SCp->scsi_done(SCp); + scsi_done(SCp); } else { printk(KERN_ERR "53c700: SCSI DONE HAS NULL SCp\n"); } @@ -816,8 +834,8 @@ process_extended_message(struct Scsi_Host *host, shost_printk(KERN_WARNING, host, "Unexpected SDTR msg\n"); hostdata->msgout[0] = A_REJECT_MSG; - dma_cache_sync(hostdata->dev, hostdata->msgout, 1, DMA_TO_DEVICE); - script_patch_16(hostdata->dev, hostdata->script, + dma_sync_to_dev(hostdata, hostdata->msgout, 1); + script_patch_16(hostdata, hostdata->script, MessageCount, 1); /* SendMsgOut returns, so set up the return * address */ @@ -829,9 +847,8 @@ process_extended_message(struct Scsi_Host *host, printk(KERN_INFO "scsi%d: (%d:%d), Unsolicited WDTR after CMD, Rejecting\n", host->host_no, pun, lun); hostdata->msgout[0] = A_REJECT_MSG; - dma_cache_sync(hostdata->dev, hostdata->msgout, 1, DMA_TO_DEVICE); - script_patch_16(hostdata->dev, hostdata->script, MessageCount, - 1); + dma_sync_to_dev(hostdata, hostdata->msgout, 1); + script_patch_16(hostdata, hostdata->script, MessageCount, 1); resume_offset = hostdata->pScript + Ent_SendMessageWithATN; break; @@ -844,9 +861,8 @@ process_extended_message(struct Scsi_Host *host, printk("\n"); /* just reject it */ hostdata->msgout[0] = A_REJECT_MSG; - dma_cache_sync(hostdata->dev, hostdata->msgout, 1, DMA_TO_DEVICE); - script_patch_16(hostdata->dev, hostdata->script, MessageCount, - 1); + dma_sync_to_dev(hostdata, hostdata->msgout, 1); + script_patch_16(hostdata, hostdata->script, MessageCount, 1); /* SendMsgOut returns, so set up the return * address */ resume_offset = hostdata->pScript + Ent_SendMessageWithATN; @@ -929,9 +945,8 @@ process_message(struct Scsi_Host *host, struct NCR_700_Host_Parameters *hostdata printk("\n"); /* just reject it */ hostdata->msgout[0] = A_REJECT_MSG; - dma_cache_sync(hostdata->dev, hostdata->msgout, 1, DMA_TO_DEVICE); - script_patch_16(hostdata->dev, hostdata->script, MessageCount, - 1); + dma_sync_to_dev(hostdata, hostdata->msgout, 1); + script_patch_16(hostdata, hostdata->script, MessageCount, 1); /* SendMsgOut returns, so set up the return * address */ resume_offset = hostdata->pScript + Ent_SendMessageWithATN; @@ -940,7 +955,7 @@ process_message(struct Scsi_Host *host, struct NCR_700_Host_Parameters *hostdata } NCR_700_writel(temp, host, TEMP_REG); /* set us up to receive another message */ - dma_cache_sync(hostdata->dev, hostdata->msgin, MSG_ARRAY_SIZE, DMA_FROM_DEVICE); + dma_sync_from_dev(hostdata, hostdata->msgin, MSG_ARRAY_SIZE); return resume_offset; } @@ -964,10 +979,10 @@ process_script_interrupt(__u32 dsps, __u32 dsp, struct scsi_cmnd *SCp, if (NCR_700_get_tag_neg_state(SCp->device) == NCR_700_DURING_TAG_NEGOTIATION) NCR_700_set_tag_neg_state(SCp->device, NCR_700_FINISHED_TAG_NEGOTIATION); - - /* check for contingent allegiance contitions */ - if(status_byte(hostdata->status[0]) == CHECK_CONDITION || - status_byte(hostdata->status[0]) == COMMAND_TERMINATED) { + + /* check for contingent allegiance conditions */ + if (hostdata->status[0] == SAM_STAT_CHECK_CONDITION || + hostdata->status[0] == SAM_STAT_COMMAND_TERMINATED) { struct NCR_700_command_slot *slot = (struct NCR_700_command_slot *)SCp->host_scribble; if(slot->flags == NCR_700_FLAG_AUTOSENSE) { @@ -1020,8 +1035,8 @@ process_script_interrupt(__u32 dsps, __u32 dsp, struct scsi_cmnd *SCp, slot->SG[1].ins = bS_to_host(SCRIPT_RETURN); slot->SG[1].pAddr = 0; slot->resume_offset = hostdata->pScript; - dma_cache_sync(hostdata->dev, slot->SG, sizeof(slot->SG[0])*2, DMA_TO_DEVICE); - dma_cache_sync(hostdata->dev, SCp->sense_buffer, SCSI_SENSE_BUFFERSIZE, DMA_FROM_DEVICE); + dma_sync_to_dev(hostdata, slot->SG, sizeof(slot->SG[0])*2); + dma_sync_from_dev(hostdata, SCp->sense_buffer, SCSI_SENSE_BUFFERSIZE); /* queue the command for reissue */ slot->state = NCR_700_SLOT_QUEUED; @@ -1141,11 +1156,11 @@ process_script_interrupt(__u32 dsps, __u32 dsp, struct scsi_cmnd *SCp, hostdata->cmd = slot->cmnd; /* re-patch for this command */ - script_patch_32_abs(hostdata->dev, hostdata->script, + script_patch_32_abs(hostdata, hostdata->script, CommandAddress, slot->pCmd); - script_patch_16(hostdata->dev, hostdata->script, + script_patch_16(hostdata, hostdata->script, CommandCount, slot->cmnd->cmd_len); - script_patch_32_abs(hostdata->dev, hostdata->script, + script_patch_32_abs(hostdata, hostdata->script, SGScriptStartAddress, to32bit(&slot->pSG[0].ins)); @@ -1156,14 +1171,14 @@ process_script_interrupt(__u32 dsps, __u32 dsp, struct scsi_cmnd *SCp, * should therefore always clear ACK */ NCR_700_writeb(NCR_700_get_SXFER(hostdata->cmd->device), host, SXFER_REG); - dma_cache_sync(hostdata->dev, hostdata->msgin, - MSG_ARRAY_SIZE, DMA_FROM_DEVICE); - dma_cache_sync(hostdata->dev, hostdata->msgout, - MSG_ARRAY_SIZE, DMA_TO_DEVICE); + dma_sync_from_dev(hostdata, hostdata->msgin, + MSG_ARRAY_SIZE); + dma_sync_to_dev(hostdata, hostdata->msgout, + MSG_ARRAY_SIZE); /* I'm just being paranoid here, the command should * already have been flushed from the cache */ - dma_cache_sync(hostdata->dev, slot->cmnd->cmnd, - slot->cmnd->cmd_len, DMA_TO_DEVICE); + dma_sync_to_dev(hostdata, slot->cmnd->cmnd, + slot->cmnd->cmd_len); @@ -1226,8 +1241,7 @@ process_script_interrupt(__u32 dsps, __u32 dsp, struct scsi_cmnd *SCp, hostdata->reselection_id = reselection_id; /* just in case we have a stale simple tag message, clear it */ hostdata->msgin[1] = 0; - dma_cache_sync(hostdata->dev, hostdata->msgin, - MSG_ARRAY_SIZE, DMA_BIDIRECTIONAL); + dma_sync_to_dev(hostdata, hostdata->msgin, MSG_ARRAY_SIZE); if(hostdata->tag_negotiated & (1<<reselection_id)) { resume_offset = hostdata->pScript + Ent_GetReselectionWithTag; } else { @@ -1341,8 +1355,7 @@ process_selection(struct Scsi_Host *host, __u32 dsp) hostdata->cmd = NULL; /* clear any stale simple tag message */ hostdata->msgin[1] = 0; - dma_cache_sync(hostdata->dev, hostdata->msgin, MSG_ARRAY_SIZE, - DMA_BIDIRECTIONAL); + dma_sync_to_dev(hostdata, hostdata->msgin, MSG_ARRAY_SIZE); if(id == 0xff) { /* Selected as target, Ignore */ @@ -1439,30 +1452,26 @@ NCR_700_start_command(struct scsi_cmnd *SCp) NCR_700_set_flag(SCp->device, NCR_700_DEV_BEGIN_SYNC_NEGOTIATION); } - script_patch_16(hostdata->dev, hostdata->script, MessageCount, count); - + script_patch_16(hostdata, hostdata->script, MessageCount, count); - script_patch_ID(hostdata->dev, hostdata->script, - Device_ID, 1<<scmd_id(SCp)); + script_patch_ID(hostdata, hostdata->script, Device_ID, 1<<scmd_id(SCp)); - script_patch_32_abs(hostdata->dev, hostdata->script, CommandAddress, + script_patch_32_abs(hostdata, hostdata->script, CommandAddress, slot->pCmd); - script_patch_16(hostdata->dev, hostdata->script, CommandCount, - SCp->cmd_len); + script_patch_16(hostdata, hostdata->script, CommandCount, SCp->cmd_len); /* finally plumb the beginning of the SG list into the script * */ - script_patch_32_abs(hostdata->dev, hostdata->script, + script_patch_32_abs(hostdata, hostdata->script, SGScriptStartAddress, to32bit(&slot->pSG[0].ins)); NCR_700_clear_fifo(SCp->device->host); if(slot->resume_offset == 0) slot->resume_offset = hostdata->pScript; /* now perform all the writebacks and invalidates */ - dma_cache_sync(hostdata->dev, hostdata->msgout, count, DMA_TO_DEVICE); - dma_cache_sync(hostdata->dev, hostdata->msgin, MSG_ARRAY_SIZE, - DMA_FROM_DEVICE); - dma_cache_sync(hostdata->dev, SCp->cmnd, SCp->cmd_len, DMA_TO_DEVICE); - dma_cache_sync(hostdata->dev, hostdata->status, 1, DMA_FROM_DEVICE); + dma_sync_to_dev(hostdata, hostdata->msgout, count); + dma_sync_from_dev(hostdata, hostdata->msgin, MSG_ARRAY_SIZE); + dma_sync_to_dev(hostdata, SCp->cmnd, SCp->cmd_len); + dma_sync_from_dev(hostdata, hostdata->status, 1); /* set the synchronous period/offset */ NCR_700_writeb(NCR_700_get_SXFER(SCp->device), @@ -1497,11 +1506,8 @@ NCR_700_intr(int irq, void *dev_id) __u8 sstat0 = 0, dstat = 0; __u32 dsp; struct scsi_cmnd *SCp = hostdata->cmd; - enum NCR_700_Host_State state; handled = 1; - state = hostdata->state; - SCp = hostdata->cmd; if(istat & SCSI_INT_PENDING) { udelay(10); @@ -1565,7 +1571,7 @@ NCR_700_intr(int irq, void *dev_id) * deadlock on the * hostdata->state_lock */ SCp->result = DID_RESET << 16; - SCp->scsi_done(SCp); + scsi_done(SCp); } mdelay(25); NCR_700_chip_setup(host); @@ -1593,7 +1599,7 @@ NCR_700_intr(int irq, void *dev_id) 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))); #endif resume_offset = hostdata->pScript + Ent_SendMessagePhaseMismatch; - } else if(dsp >= to32bit(&slot->pSG[0].ins) && + } else if (slot && dsp >= to32bit(&slot->pSG[0].ins) && dsp <= to32bit(&slot->pSG[NCR_700_SG_SEGMENTS].ins)) { int data_transfer = NCR_700_readl(host, DBC_REG) & 0xffffff; int SGcount = (dsp - to32bit(&slot->pSG[0].ins))/sizeof(struct NCR_700_SG_List); @@ -1638,7 +1644,7 @@ NCR_700_intr(int irq, void *dev_id) slot->SG[i].ins = bS_to_host(SCRIPT_NOP); slot->SG[i].pAddr = 0; } - dma_cache_sync(hostdata->dev, slot->SG, sizeof(slot->SG), DMA_TO_DEVICE); + dma_sync_to_dev(hostdata, slot->SG, sizeof(slot->SG)); /* and pretend we disconnected after * the command phase */ resume_offset = hostdata->pScript + Ent_MsgInDuringData; @@ -1745,13 +1751,11 @@ NCR_700_intr(int irq, void *dev_id) return IRQ_RETVAL(handled); } -static int -NCR_700_queuecommand_lck(struct scsi_cmnd *SCp, void (*done)(struct scsi_cmnd *)) +static int NCR_700_queuecommand_lck(struct scsi_cmnd *SCp) { struct NCR_700_Host_Parameters *hostdata = (struct NCR_700_Host_Parameters *)SCp->device->host->hostdata[0]; __u32 move_ins; - enum dma_data_direction direction; struct NCR_700_command_slot *slot; if(hostdata->command_slot_count >= NCR_700_COMMAND_SLOTS_PER_HOST) { @@ -1787,10 +1791,7 @@ NCR_700_queuecommand_lck(struct scsi_cmnd *SCp, void (*done)(struct scsi_cmnd *) slot->cmnd = SCp; - SCp->scsi_done = done; SCp->host_scribble = (unsigned char *)slot; - SCp->SCp.ptr = NULL; - SCp->SCp.buffer = NULL; #ifdef NCR_700_DEBUG printk("53c700: scsi%d, command ", SCp->device->host->host_no); @@ -1818,7 +1819,7 @@ NCR_700_queuecommand_lck(struct scsi_cmnd *SCp, void (*done)(struct scsi_cmnd *) if ((hostdata->tag_negotiated & (1<<scmd_id(SCp))) && SCp->device->simple_tags) { - slot->tag = SCp->request->tag; + slot->tag = scsi_cmd_to_rq(SCp)->tag; CDEBUG(KERN_DEBUG, SCp, "sending out tag %d, slot %p\n", slot->tag, slot); } else { @@ -1844,7 +1845,7 @@ NCR_700_queuecommand_lck(struct scsi_cmnd *SCp, void (*done)(struct scsi_cmnd *) case REQUEST_SENSE: /* clear the internal sense magic */ SCp->cmnd[6] = 0; - /* fall through */ + fallthrough; default: /* OK, get it from the command */ switch(SCp->sc_data_direction) { @@ -1868,7 +1869,6 @@ NCR_700_queuecommand_lck(struct scsi_cmnd *SCp, void (*done)(struct scsi_cmnd *) } /* now build the scatter gather list */ - direction = SCp->sc_data_direction; if(move_ins != 0) { int i; int sg_count; @@ -1890,7 +1890,7 @@ NCR_700_queuecommand_lck(struct scsi_cmnd *SCp, void (*done)(struct scsi_cmnd *) } slot->SG[i].ins = bS_to_host(SCRIPT_RETURN); slot->SG[i].pAddr = 0; - dma_cache_sync(hostdata->dev, slot->SG, sizeof(slot->SG), DMA_TO_DEVICE); + dma_sync_to_dev(hostdata, slot->SG, sizeof(slot->SG)); DEBUG((" SETTING %p to %x\n", (&slot->pSG[i].ins), slot->SG[i].ins)); @@ -2018,7 +2018,7 @@ NCR_700_set_offset(struct scsi_target *STp, int offset) } STATIC int -NCR_700_slave_alloc(struct scsi_device *SDp) +NCR_700_sdev_init(struct scsi_device *SDp) { SDp->hostdata = kzalloc(sizeof(struct NCR_700_Device_Parameters), GFP_KERNEL); @@ -2030,7 +2030,7 @@ NCR_700_slave_alloc(struct scsi_device *SDp) } STATIC int -NCR_700_slave_configure(struct scsi_device *SDp) +NCR_700_sdev_configure(struct scsi_device *SDp, struct queue_limits *lim) { struct NCR_700_Host_Parameters *hostdata = (struct NCR_700_Host_Parameters *)SDp->host->hostdata[0]; @@ -2053,7 +2053,7 @@ NCR_700_slave_configure(struct scsi_device *SDp) } STATIC void -NCR_700_slave_destroy(struct scsi_device *SDp) +NCR_700_sdev_destroy(struct scsi_device *SDp) { kfree(SDp->hostdata); SDp->hostdata = NULL; @@ -2072,7 +2072,7 @@ NCR_700_show_active_tags(struct device *dev, struct device_attribute *attr, char { struct scsi_device *SDp = to_scsi_device(dev); - return snprintf(buf, 20, "%d\n", NCR_700_get_depth(SDp)); + return sysfs_emit(buf, "%d\n", NCR_700_get_depth(SDp)); } static struct device_attribute NCR_700_active_tags_attr = { @@ -2083,11 +2083,13 @@ static struct device_attribute NCR_700_active_tags_attr = { .show = NCR_700_show_active_tags, }; -STATIC struct device_attribute *NCR_700_dev_attrs[] = { - &NCR_700_active_tags_attr, +STATIC struct attribute *NCR_700_dev_attrs[] = { + &NCR_700_active_tags_attr.attr, NULL, }; +ATTRIBUTE_GROUPS(NCR_700_dev); + EXPORT_SYMBOL(NCR_700_detect); EXPORT_SYMBOL(NCR_700_release); EXPORT_SYMBOL(NCR_700_intr); |
