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Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6

Browse Source 
* master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6:
  [SCSI] SCSI core: better initialization for sdev->scsi_level
  [SCSI] scsi_proc.c: display sdev->scsi_level correctly
  [SCSI] megaraid_sas: update version and author info
  [SCSI] megaraid_sas: return sync cache call with success
  [SCSI] megaraid_sas: replace pci_alloc_consitent with dma_alloc_coherent in ioctl path
  [SCSI] megaraid_sas: add bios_param in scsi_host_template
  [SCSI] megaraid_sas: do not process cmds if hw_crit_error is set
  [SCSI] scsi_transport.h should include scsi_device.h
  [SCSI] aic79xx: remove extra newline from info message
  [SCSI] scsi_scan.c: handle bad inquiry responses
  [SCSI] aic94xx: tie driver to the major number of the sequencer firmware
  [SCSI] lpfc: add PCI error recovery support
  [SCSI] megaraid: pci_module_init to pci_register_driver
  [SCSI] tgt: fix the user/kernel ring buffer interface
  [SCSI] sgiwd93: interfacing to wd33c93
  [SCSI] wd33c93: Fast SCSI with WD33C93B
This commit is contained in:
Linus Torvalds 2007-02-19 13:32:28 -08:00
commit 5fc77247f7
17 changed files with 481 additions and 106 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/scsi/aic7xxx/aic79xx_osm.c
View File

@ -418,7 +418,6 @@ ahd_linux_info(struct Scsi_Host *host)
strcat(bp, " ");
ahd_controller_info(ahd, ahd_info);
strcat(bp, ahd_info);
strcat(bp, "\n");
return (bp);
}

13
drivers/scsi/aic94xx/aic94xx_seq.c
View File

@ -44,7 +44,6 @@
#define PAUSE_TRIES 1000
static const struct firmware *sequencer_fw;
static const char *sequencer_version;
static u16 cseq_vecs[CSEQ_NUM_VECS], lseq_vecs[LSEQ_NUM_VECS], mode2_task,
cseq_idle_loop, lseq_idle_loop;
static u8 *cseq_code, *lseq_code;
@ -1276,7 +1275,6 @@ static int asd_request_firmware(struct asd_ha_struct *asd_ha)
header.csum = le32_to_cpu(hdr_ptr->csum);
header.major = le32_to_cpu(hdr_ptr->major);
header.minor = le32_to_cpu(hdr_ptr->minor);
sequencer_version = hdr_ptr->version;
header.cseq_table_offset = le32_to_cpu(hdr_ptr->cseq_table_offset);
header.cseq_table_size = le32_to_cpu(hdr_ptr->cseq_table_size);
header.lseq_table_offset = le32_to_cpu(hdr_ptr->lseq_table_offset);
@ -1303,6 +1301,16 @@ static int asd_request_firmware(struct asd_ha_struct *asd_ha)
return -EINVAL;
}
asd_printk("Found sequencer Firmware version %d.%d (%s)\n",
header.major, header.minor, hdr_ptr->version);
if (header.major != SAS_RAZOR_SEQUENCER_FW_MAJOR) {
asd_printk("Firmware Major Version Mismatch;"
"driver requires version %d.X",
SAS_RAZOR_SEQUENCER_FW_MAJOR);
return -EINVAL;
}
ptr_cseq_vecs = (u16 *)&sequencer_fw->data[header.cseq_table_offset];
ptr_lseq_vecs = (u16 *)&sequencer_fw->data[header.lseq_table_offset];
mode2_task = header.mode2_task;
@ -1335,7 +1343,6 @@ int asd_init_seqs(struct asd_ha_struct *asd_ha)
return err;
}
asd_printk("using sequencer %s\n", sequencer_version);
err = asd_seq_download_seqs(asd_ha);
if (err) {
asd_printk("couldn't download sequencers for %s\n",

1
drivers/scsi/aic94xx/aic94xx_seq.h
View File

@ -31,6 +31,7 @@
#define LSEQ_NUM_VECS 11
#define SAS_RAZOR_SEQUENCER_FW_FILE "aic94xx-seq.fw"
#define SAS_RAZOR_SEQUENCER_FW_MAJOR 1
/* Note: All quantites in the sequencer file are little endian */
struct sequencer_file_header {

97
drivers/scsi/lpfc/lpfc_init.c
View File

@ -518,6 +518,10 @@ lpfc_handle_eratt(struct lpfc_hba * phba)
struct lpfc_sli *psli = &phba->sli;
struct lpfc_sli_ring *pring;
uint32_t event_data;
/* If the pci channel is offline, ignore possible errors,
* since we cannot communicate with the pci card anyway. */
if (pci_channel_offline(phba->pcidev))
return;
if (phba->work_hs & HS_FFER6 ||
phba->work_hs & HS_FFER5) {
@ -1797,6 +1801,92 @@ lpfc_pci_remove_one(struct pci_dev *pdev)
pci_set_drvdata(pdev, NULL);
}
/**
* lpfc_io_error_detected - called when PCI error is detected
* @pdev: Pointer to PCI device
* @state: The current pci conneection state
*
* This function is called after a PCI bus error affecting
* this device has been detected.
*/
static pci_ers_result_t lpfc_io_error_detected(struct pci_dev *pdev,
pci_channel_state_t state)
{
struct Scsi_Host *host = pci_get_drvdata(pdev);
struct lpfc_hba *phba = (struct lpfc_hba *)host->hostdata;
struct lpfc_sli *psli = &phba->sli;
struct lpfc_sli_ring *pring;
if (state == pci_channel_io_perm_failure) {
lpfc_pci_remove_one(pdev);
return PCI_ERS_RESULT_DISCONNECT;
}
pci_disable_device(pdev);
/*
* There may be I/Os dropped by the firmware.
* Error iocb (I/O) on txcmplq and let the SCSI layer
* retry it after re-establishing link.
*/
pring = &psli->ring[psli->fcp_ring];
lpfc_sli_abort_iocb_ring(phba, pring);
/* Request a slot reset. */
return PCI_ERS_RESULT_NEED_RESET;
}
/**
* lpfc_io_slot_reset - called after the pci bus has been reset.
* @pdev: Pointer to PCI device
*
* Restart the card from scratch, as if from a cold-boot.
*/
static pci_ers_result_t lpfc_io_slot_reset(struct pci_dev *pdev)
{
struct Scsi_Host *host = pci_get_drvdata(pdev);
struct lpfc_hba *phba = (struct lpfc_hba *)host->hostdata;
struct lpfc_sli *psli = &phba->sli;
int bars = pci_select_bars(pdev, IORESOURCE_MEM);
dev_printk(KERN_INFO, &pdev->dev, "recovering from a slot reset.\n");
if (pci_enable_device_bars(pdev, bars)) {
printk(KERN_ERR "lpfc: Cannot re-enable "
"PCI device after reset.\n");
return PCI_ERS_RESULT_DISCONNECT;
}
pci_set_master(pdev);
/* Re-establishing Link */
spin_lock_irq(phba->host->host_lock);
phba->fc_flag |= FC_ESTABLISH_LINK;
psli->sli_flag &= ~LPFC_SLI2_ACTIVE;
spin_unlock_irq(phba->host->host_lock);
/* Take device offline; this will perform cleanup */
lpfc_offline(phba);
lpfc_sli_brdrestart(phba);
return PCI_ERS_RESULT_RECOVERED;
}
/**
* lpfc_io_resume - called when traffic can start flowing again.
* @pdev: Pointer to PCI device
*
* This callback is called when the error recovery driver tells us that
* its OK to resume normal operation.
*/
static void lpfc_io_resume(struct pci_dev *pdev)
{
struct Scsi_Host *host = pci_get_drvdata(pdev);
struct lpfc_hba *phba = (struct lpfc_hba *)host->hostdata;
if (lpfc_online(phba) == 0) {
mod_timer(&phba->fc_estabtmo, jiffies + HZ * 60);
}
}
static struct pci_device_id lpfc_id_table[] = {
{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_VIPER,
PCI_ANY_ID, PCI_ANY_ID, },
@ -1857,11 +1947,18 @@ static struct pci_device_id lpfc_id_table[] = {
MODULE_DEVICE_TABLE(pci, lpfc_id_table);
static struct pci_error_handlers lpfc_err_handler = {
.error_detected = lpfc_io_error_detected,
.slot_reset = lpfc_io_slot_reset,
.resume = lpfc_io_resume,
};
static struct pci_driver lpfc_driver = {
.name = LPFC_DRIVER_NAME,
.id_table = lpfc_id_table,
.probe = lpfc_pci_probe_one,
.remove = __devexit_p(lpfc_pci_remove_one),
.err_handler = &lpfc_err_handler,
};
static int __init

12
drivers/scsi/lpfc/lpfc_sli.c
View File

@ -2104,6 +2104,10 @@ lpfc_sli_issue_mbox(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmbox, uint32_t flag)
volatile uint32_t word0, ldata;
void __iomem *to_slim;
/* If the PCI channel is in offline state, do not post mbox. */
if (unlikely(pci_channel_offline(phba->pcidev)))
return MBX_NOT_FINISHED;
psli = &phba->sli;
spin_lock_irqsave(phba->host->host_lock, drvr_flag);
@ -2407,6 +2411,10 @@ lpfc_sli_issue_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
struct lpfc_iocbq *nextiocb;
IOCB_t *iocb;
/* If the PCI channel is in offline state, do not post iocbs. */
if (unlikely(pci_channel_offline(phba->pcidev)))
return IOCB_ERROR;
/*
* We should never get an IOCB if we are in a < LINK_DOWN state
*/
@ -3154,6 +3162,10 @@ lpfc_intr_handler(int irq, void *dev_id)
if (unlikely(!phba))
return IRQ_NONE;
/* If the pci channel is offline, ignore all the interrupts. */
if (unlikely(pci_channel_offline(phba->pcidev)))
return IRQ_NONE;
phba->sli.slistat.sli_intr++;
/*

2
drivers/scsi/megaraid.c
View File

@ -5072,7 +5072,7 @@ static int __init megaraid_init(void)
"megaraid: failed to create megaraid root\n");
}
#endif
error = pci_module_init(&megaraid_pci_driver);
error = pci_register_driver(&megaraid_pci_driver);
if (error) {
#ifdef CONFIG_PROC_FS
remove_proc_entry("megaraid", &proc_root);

90
drivers/scsi/megaraid/megaraid_sas.c
View File

@ -10,11 +10,13 @@
* 2 of the License, or (at your option) any later version.
*
* FILE : megaraid_sas.c
* Version : v00.00.03.05
* Version : v00.00.03.10-rc1
*
* Authors:
* Sreenivas Bagalkote <Sreenivas.Bagalkote@lsi.com>
* Sumant Patro <Sumant.Patro@lsi.com>
* (email-id : megaraidlinux@lsi.com)
* Sreenivas Bagalkote
* Sumant Patro
* Bo Yang
*
* List of supported controllers
*
@ -35,6 +37,7 @@
#include <asm/uaccess.h>
#include <linux/fs.h>
#include <linux/compat.h>
#include <linux/blkdev.h>
#include <linux/mutex.h>
#include <scsi/scsi.h>
@ -841,6 +844,11 @@ megasas_queue_command(struct scsi_cmnd *scmd, void (*done) (struct scsi_cmnd *))
instance = (struct megasas_instance *)
scmd->device->host->hostdata;
/* Don't process if we have already declared adapter dead */
if (instance->hw_crit_error)
return SCSI_MLQUEUE_HOST_BUSY;
scmd->scsi_done = done;
scmd->result = 0;
@ -850,6 +858,18 @@ megasas_queue_command(struct scsi_cmnd *scmd, void (*done) (struct scsi_cmnd *))
goto out_done;
}
switch (scmd->cmnd[0]) {
case SYNCHRONIZE_CACHE:
/*
* FW takes care of flush cache on its own
* No need to send it down
*/
scmd->result = DID_OK << 16;
goto out_done;
default:
break;
}
cmd = megasas_get_cmd(instance);
if (!cmd)
return SCSI_MLQUEUE_HOST_BUSY;
@ -1009,6 +1029,49 @@ static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
return ret;
}
/**
* megasas_bios_param - Returns disk geometry for a disk
* @sdev: device handle
* @bdev: block device
* @capacity: drive capacity
* @geom: geometry parameters
*/
static int
megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev,
sector_t capacity, int geom[])
{
int heads;
int sectors;
sector_t cylinders;
unsigned long tmp;
/* Default heads (64) & sectors (32) */
heads = 64;
sectors = 32;
tmp = heads * sectors;
cylinders = capacity;
sector_div(cylinders, tmp);
/*
* Handle extended translation size for logical drives > 1Gb
*/
if (capacity >= 0x200000) {
heads = 255;
sectors = 63;
tmp = heads*sectors;
cylinders = capacity;
sector_div(cylinders, tmp);
}
geom[0] = heads;
geom[1] = sectors;
geom[2] = cylinders;
return 0;
}
/**
* megasas_service_aen - Processes an event notification
* @instance: Adapter soft state
@ -1049,6 +1112,7 @@ static struct scsi_host_template megasas_template = {
.eh_device_reset_handler = megasas_reset_device,
.eh_bus_reset_handler = megasas_reset_bus_host,
.eh_host_reset_handler = megasas_reset_bus_host,
.bios_param = megasas_bios_param,
.use_clustering = ENABLE_CLUSTERING,
};
@ -1282,11 +1346,13 @@ megasas_deplete_reply_queue(struct megasas_instance *instance, u8 alt_status)
if(instance->instancet->clear_intr(instance->reg_set))
return IRQ_NONE;
if (instance->hw_crit_error)
goto out_done;
/*
* Schedule the tasklet for cmd completion
*/
tasklet_schedule(&instance->isr_tasklet);
out_done:
return IRQ_HANDLED;
}
@ -1741,6 +1807,10 @@ static void megasas_complete_cmd_dpc(unsigned long instance_addr)
struct megasas_cmd *cmd;
struct megasas_instance *instance = (struct megasas_instance *)instance_addr;
/* If we have already declared adapter dead, donot complete cmds */
if (instance->hw_crit_error)
return;
producer = *instance->producer;
consumer = *instance->consumer;
@ -2655,9 +2725,9 @@ megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
* For each user buffer, create a mirror buffer and copy in
*/
for (i = 0; i < ioc->sge_count; i++) {
kbuff_arr[i] = pci_alloc_consistent(instance->pdev,
kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev,
ioc->sgl[i].iov_len,
&buf_handle);
&buf_handle, GFP_KERNEL);
if (!kbuff_arr[i]) {
printk(KERN_DEBUG "megasas: Failed to alloc "
"kernel SGL buffer for IOCTL \n");
@ -2684,8 +2754,8 @@ megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
}
if (ioc->sense_len) {
sense = pci_alloc_consistent(instance->pdev, ioc->sense_len,
&sense_handle);
sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len,
&sense_handle, GFP_KERNEL);
if (!sense) {
error = -ENOMEM;
goto out;
@ -2744,12 +2814,12 @@ megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
out:
if (sense) {
pci_free_consistent(instance->pdev, ioc->sense_len,
dma_free_coherent(&instance->pdev->dev, ioc->sense_len,
sense, sense_handle);
}
for (i = 0; i < ioc->sge_count && kbuff_arr[i]; i++) {
pci_free_consistent(instance->pdev,
dma_free_coherent(&instance->pdev->dev,
kern_sge32[i].length,
kbuff_arr[i], kern_sge32[i].phys_addr);
}

6
drivers/scsi/megaraid/megaraid_sas.h
View File

@ -18,9 +18,9 @@
/*
* MegaRAID SAS Driver meta data
*/
#define MEGASAS_VERSION "00.00.03.05"
#define MEGASAS_RELDATE "Oct 02, 2006"
#define MEGASAS_EXT_VERSION "Mon Oct 02 11:21:32 PDT 2006"
#define MEGASAS_VERSION "00.00.03.10-rc1"
#define MEGASAS_RELDATE "Feb 14, 2007"
#define MEGASAS_EXT_VERSION "Wed Feb 14 10:14:25 PST 2007"
/*
* Device IDs

5
drivers/scsi/scsi_proc.c
View File

@ -179,9 +179,8 @@ static int proc_print_scsidevice(struct device *dev, void *data)
seq_printf(s, "\n");
seq_printf(s, " Type: %s ", scsi_device_type(sdev->type));
seq_printf(s, " ANSI"
" SCSI revision: %02x", (sdev->scsi_level - 1) ?
sdev->scsi_level - 1 : 1);
seq_printf(s, " ANSI SCSI revision: %02x",
sdev->scsi_level - (sdev->scsi_level > 1));
if (sdev->scsi_level == 2)
seq_printf(s, " CCS\n");
else

14
drivers/scsi/scsi_scan.c
View File

@ -385,6 +385,7 @@ static struct scsi_target *scsi_alloc_target(struct device *parent,
INIT_LIST_HEAD(&starget->siblings);
INIT_LIST_HEAD(&starget->devices);
starget->state = STARGET_RUNNING;
starget->scsi_level = SCSI_2;
retry:
spin_lock_irqsave(shost->host_lock, flags);
@ -654,6 +655,19 @@ static int scsi_probe_lun(struct scsi_device *sdev, unsigned char *inq_result,
* short INQUIRY), an abort here prevents any further use of the
* device, including spin up.
*
* On the whole, the best approach seems to be to assume the first
* 36 bytes are valid no matter what the device says. That's
* better than copying < 36 bytes to the inquiry-result buffer
* and displaying garbage for the Vendor, Product, or Revision
* strings.
*/
if (sdev->inquiry_len < 36) {
printk(KERN_INFO "scsi scan: INQUIRY result too short (%d),"
" using 36\n", sdev->inquiry_len);
sdev->inquiry_len = 36;
}
/*
* Related to the above issue:
*
* XXX Devices (disk or all?) should be sent a TEST UNIT READY,

2
drivers/scsi/scsi_sysfs.c
View File

@ -922,7 +922,7 @@ void scsi_sysfs_device_initialize(struct scsi_device *sdev)
snprintf(sdev->sdev_classdev.class_id, BUS_ID_SIZE,
"%d:%d:%d:%d", sdev->host->host_no,
sdev->channel, sdev->id, sdev->lun);
sdev->scsi_level = SCSI_2;
sdev->scsi_level = starget->scsi_level;
transport_setup_device(&sdev->sdev_gendev);
spin_lock_irqsave(shost->host_lock, flags);
list_add_tail(&sdev->same_target_siblings, &starget->devices);

8
drivers/scsi/scsi_tgt_if.c
View File

@ -33,6 +33,14 @@
#include "scsi_tgt_priv.h"
#if TGT_RING_SIZE < PAGE_SIZE
# define TGT_RING_SIZE PAGE_SIZE
#endif
#define TGT_RING_PAGES (TGT_RING_SIZE >> PAGE_SHIFT)
#define TGT_EVENT_PER_PAGE (PAGE_SIZE / sizeof(struct tgt_event))
#define TGT_MAX_EVENTS (TGT_EVENT_PER_PAGE * TGT_RING_PAGES)
struct tgt_ring {
u32 tr_idx;
unsigned long tr_pages[TGT_RING_PAGES];

3
drivers/scsi/sgiwd93.c
View File

@ -244,8 +244,9 @@ static struct Scsi_Host * __init sgiwd93_setup_scsi(
regs.SASR = wdregs + 3;
regs.SCMD = wdregs + 7;
wd33c93_init(host, regs, dma_setup, dma_stop, WD33C93_FS_16_20);
wd33c93_init(host, regs, dma_setup, dma_stop, WD33C93_FS_MHZ(20));
if (hdata->wh.no_sync == 0xff)
hdata->wh.no_sync = 0;
if (request_irq(irq, sgiwd93_intr, 0, "SGI WD93", (void *) host)) {

321
drivers/scsi/wd33c93.c
View File

@ -69,6 +69,11 @@
* Added support for pre -A chips, which don't have advanced features
* and will generate CSR_RESEL rather than CSR_RESEL_AM.
* Richard Hirst <richard@sleepie.demon.co.uk> August 2000
*
* Added support for Burst Mode DMA and Fast SCSI. Enabled the use of
* default_sx_per for asynchronous data transfers. Added adjustment
* of transfer periods in sx_table to the actual input-clock.
* peter fuerst <post@pfrst.de> February 2007
*/
#include <linux/module.h>
@ -86,9 +91,11 @@
#include "wd33c93.h"
#define optimum_sx_per(hostdata) (hostdata)->sx_table[1].period_ns
#define WD33C93_VERSION "1.26"
#define WD33C93_DATE "22/Feb/2003"
#define WD33C93_VERSION "1.26++"
#define WD33C93_DATE "10/Feb/2007"
MODULE_AUTHOR("John Shifflett");
MODULE_DESCRIPTION("Generic WD33C93 SCSI driver");
@ -122,6 +129,13 @@ MODULE_LICENSE("GPL");
* defines in wd33c93.h
* - clock:x -x = clock input in MHz for WD33c93 chip. Normal values
* would be from 8 through 20. Default is 8.
* - burst:x -x = 1 to use Burst Mode (or Demand-Mode) DMA, x = 0 to use
* Single Byte DMA, which is the default. Argument is
* optional - if not present, same as "burst:1".
* - fast:x -x = 1 to enable Fast SCSI, which is only effective with
* input-clock divisor 4 (WD33C93_FS_16_20), x = 0 to disable
* it, which is the default. Argument is optional - if not
* present, same as "fast:1".
* - next -No argument. Used to separate blocks of keywords when
* there's more than one host adapter in the system.
*
@ -148,7 +162,7 @@ MODULE_LICENSE("GPL");
*/
/* Normally, no defaults are specified */
static char *setup_args[] = { "", "", "", "", "", "", "", "", "" };
static char *setup_args[] = { "", "", "", "", "", "", "", "", "", "" };
static char *setup_strings;
module_param(setup_strings, charp, 0);
@ -298,20 +312,8 @@ read_1_byte(const wd33c93_regs regs)
return x;
}
static struct sx_period sx_table[] = {
{1, 0x20},
{252, 0x20},
{376, 0x30},
{500, 0x40},
{624, 0x50},
{752, 0x60},
{876, 0x70},
{1000, 0x00},
{0, 0}
};
static int
round_period(unsigned int period)
round_period(unsigned int period, const struct sx_period *sx_table)
{
int x;
@ -324,17 +326,49 @@ round_period(unsigned int period)
return 7;
}
/*
* Calculate Synchronous Transfer Register value from SDTR code.
*/
static uchar
calc_sync_xfer(unsigned int period, unsigned int offset)
calc_sync_xfer(unsigned int period, unsigned int offset, unsigned int fast,
const struct sx_period *sx_table)
{
/* When doing Fast SCSI synchronous data transfers, the corresponding
* value in 'sx_table' is two times the actually used transfer period.
*/
uchar result;
if (offset && fast) {
fast = STR_FSS;
period *= 2;
} else {
fast = 0;
}
period *= 4; /* convert SDTR code to ns */
result = sx_table[round_period(period)].reg_value;
result = sx_table[round_period(period,sx_table)].reg_value;
result |= (offset < OPTIMUM_SX_OFF) ? offset : OPTIMUM_SX_OFF;
result |= fast;
return result;
}
/*
* Calculate SDTR code bytes [3],[4] from period and offset.
*/
static inline void
calc_sync_msg(unsigned int period, unsigned int offset, unsigned int fast,
uchar msg[2])
{
/* 'period' is a "normal"-mode value, like the ones in 'sx_table'. The
* actually used transfer period for Fast SCSI synchronous data
* transfers is half that value.
*/
period /= 4;
if (offset && fast)
period /= 2;
msg[0] = period;
msg[1] = offset;
}
int
wd33c93_queuecommand(struct scsi_cmnd *cmd,
void (*done)(struct scsi_cmnd *))
@ -632,7 +666,7 @@ wd33c93_execute(struct Scsi_Host *instance)
write_wd33c93_count(regs,
cmd->SCp.this_residual);
write_wd33c93(regs, WD_CONTROL,
CTRL_IDI | CTRL_EDI | CTRL_DMA);
CTRL_IDI | CTRL_EDI | hostdata->dma_mode);
hostdata->dma = D_DMA_RUNNING;
}
} else
@ -712,6 +746,8 @@ transfer_bytes(const wd33c93_regs regs, struct scsi_cmnd *cmd,
cmd->SCp.ptr = page_address(cmd->SCp.buffer->page) +
cmd->SCp.buffer->offset;
}
if (!cmd->SCp.this_residual) /* avoid bogus setups */
return;
write_wd33c93(regs, WD_SYNCHRONOUS_TRANSFER,
hostdata->sync_xfer[cmd->device->id]);
@ -744,7 +780,7 @@ transfer_bytes(const wd33c93_regs regs, struct scsi_cmnd *cmd,
#ifdef PROC_STATISTICS
hostdata->dma_cnt++;
#endif
write_wd33c93(regs, WD_CONTROL, CTRL_IDI | CTRL_EDI | CTRL_DMA);
write_wd33c93(regs, WD_CONTROL, CTRL_IDI | CTRL_EDI | hostdata->dma_mode);
write_wd33c93_count(regs, cmd->SCp.this_residual);
if ((hostdata->level2 >= L2_DATA) ||
@ -862,9 +898,6 @@ wd33c93_intr(struct Scsi_Host *instance)
hostdata->outgoing_msg[0] |= 0x40;
if (hostdata->sync_stat[cmd->device->id] == SS_FIRST) {
#ifdef SYNC_DEBUG
printk(" sending SDTR ");
#endif
hostdata->sync_stat[cmd->device->id] = SS_WAITING;
@ -878,14 +911,20 @@ wd33c93_intr(struct Scsi_Host *instance)
hostdata->outgoing_msg[2] = 3;
hostdata->outgoing_msg[3] = EXTENDED_SDTR;
if (hostdata->no_sync & (1 << cmd->device->id)) {
hostdata->outgoing_msg[4] =
hostdata->default_sx_per / 4;
hostdata->outgoing_msg[5] = 0;
calc_sync_msg(hostdata->default_sx_per, 0,
0, hostdata->outgoing_msg + 4);
} else {
hostdata->outgoing_msg[4] = OPTIMUM_SX_PER / 4;
hostdata->outgoing_msg[5] = OPTIMUM_SX_OFF;
calc_sync_msg(optimum_sx_per(hostdata),
OPTIMUM_SX_OFF,
hostdata->fast,
hostdata->outgoing_msg + 4);
}
hostdata->outgoing_len = 6;
#ifdef SYNC_DEBUG
ucp = hostdata->outgoing_msg + 1;
printk(" sending SDTR %02x03%02x%02x%02x ",
ucp[0], ucp[2], ucp[3], ucp[4]);
#endif
} else
hostdata->outgoing_len = 1;
@ -1001,8 +1040,13 @@ wd33c93_intr(struct Scsi_Host *instance)
#ifdef SYNC_DEBUG
printk("-REJ-");
#endif
if (hostdata->sync_stat[cmd->device->id] == SS_WAITING)
if (hostdata->sync_stat[cmd->device->id] == SS_WAITING) {
hostdata->sync_stat[cmd->device->id] = SS_SET;
/* we want default_sx_per, not DEFAULT_SX_PER */
hostdata->sync_xfer[cmd->device->id] =
calc_sync_xfer(hostdata->default_sx_per
/ 4, 0, 0, hostdata->sx_table);
}
write_wd33c93_cmd(regs, WD_CMD_NEGATE_ACK);
hostdata->state = S_CONNECTED;
break;
@ -1022,7 +1066,10 @@ wd33c93_intr(struct Scsi_Host *instance)
switch (ucp[2]) { /* what's the EXTENDED code? */
case EXTENDED_SDTR:
id = calc_sync_xfer(ucp[3], ucp[4]);
/* default to default async period */
id = calc_sync_xfer(hostdata->
default_sx_per / 4, 0,
0, hostdata->sx_table);
if (hostdata->sync_stat[cmd->device->id] !=
SS_WAITING) {
@ -1041,20 +1088,22 @@ wd33c93_intr(struct Scsi_Host *instance)
hostdata->outgoing_msg[1] = 3;
hostdata->outgoing_msg[2] =
EXTENDED_SDTR;
hostdata->outgoing_msg[3] =
hostdata->default_sx_per /
4;
hostdata->outgoing_msg[4] = 0;
calc_sync_msg(hostdata->
default_sx_per, 0,
0, hostdata->outgoing_msg + 3);
hostdata->outgoing_len = 5;
hostdata->sync_xfer[cmd->device->id] =
calc_sync_xfer(hostdata->
default_sx_per
/ 4, 0);
} else {
hostdata->sync_xfer[cmd->device->id] = id;
if (ucp[4]) /* well, sync transfer */
id = calc_sync_xfer(ucp[3], ucp[4],
hostdata->fast,
hostdata->sx_table);
else if (ucp[3]) /* very unlikely... */
id = calc_sync_xfer(ucp[3], ucp[4],
0, hostdata->sx_table);
}
hostdata->sync_xfer[cmd->device->id] = id;
#ifdef SYNC_DEBUG
printk("sync_xfer=%02x",
printk(" sync_xfer=%02x\n",
hostdata->sync_xfer[cmd->device->id]);
#endif
hostdata->sync_stat[cmd->device->id] =
@ -1486,7 +1535,7 @@ reset_wd33c93(struct Scsi_Host *instance)
write_wd33c93(regs, WD_CONTROL, CTRL_IDI | CTRL_EDI | CTRL_POLLED);
write_wd33c93(regs, WD_SYNCHRONOUS_TRANSFER,
calc_sync_xfer(hostdata->default_sx_per / 4,
DEFAULT_SX_OFF));
DEFAULT_SX_OFF, 0, hostdata->sx_table));
write_wd33c93(regs, WD_COMMAND, WD_CMD_RESET);
@ -1512,6 +1561,9 @@ reset_wd33c93(struct Scsi_Host *instance)
} else
hostdata->chip = C_UNKNOWN_CHIP;
if (hostdata->chip != C_WD33C93B) /* Fast SCSI unavailable */
hostdata->fast = 0;
write_wd33c93(regs, WD_TIMEOUT_PERIOD, TIMEOUT_PERIOD_VALUE);
write_wd33c93(regs, WD_CONTROL, CTRL_IDI | CTRL_EDI | CTRL_POLLED);
}
@ -1533,7 +1585,8 @@ wd33c93_host_reset(struct scsi_cmnd * SCpnt)
for (i = 0; i < 8; i++) {
hostdata->busy[i] = 0;
hostdata->sync_xfer[i] =
calc_sync_xfer(DEFAULT_SX_PER / 4, DEFAULT_SX_OFF);
calc_sync_xfer(DEFAULT_SX_PER / 4, DEFAULT_SX_OFF,
0, hostdata->sx_table);
hostdata->sync_stat[i] = SS_UNSET; /* using default sync values */
}
hostdata->input_Q = NULL;
@ -1782,6 +1835,98 @@ check_setup_args(char *key, int *flags, int *val, char *buf)
return ++x;
}
/*
* Calculate internal data-transfer-clock cycle from input-clock
* frequency (/MHz) and fill 'sx_table'.
*
* The original driver used to rely on a fixed sx_table, containing periods
* for (only) the lower limits of the respective input-clock-frequency ranges
* (8-10/12-15/16-20 MHz). Although it seems, that no problems ocurred with
* this setting so far, it might be desirable to adjust the transfer periods
* closer to the really attached, possibly 25% higher, input-clock, since
* - the wd33c93 may really use a significant shorter period, than it has
* negotiated (eg. thrashing the target, which expects 4/8MHz, with 5/10MHz
* instead).
* - the wd33c93 may ask the target for a lower transfer rate, than the target
* is capable of (eg. negotiating for an assumed minimum of 252ns instead of
* possible 200ns, which indeed shows up in tests as an approx. 10% lower
* transfer rate).
*/
static inline unsigned int
round_4(unsigned int x)
{
switch (x & 3) {
case 1: --x;
break;
case 2: ++x;
case 3: ++x;
}
return x;
}
static void
calc_sx_table(unsigned int mhz, struct sx_period sx_table[9])
{
unsigned int d, i;
if (mhz < 11)
d = 2; /* divisor for 8-10 MHz input-clock */
else if (mhz < 16)
d = 3; /* divisor for 12-15 MHz input-clock */
else
d = 4; /* divisor for 16-20 MHz input-clock */
d = (100000 * d) / 2 / mhz; /* 100 x DTCC / nanosec */
sx_table[0].period_ns = 1;
sx_table[0].reg_value = 0x20;
for (i = 1; i < 8; i++) {
sx_table[i].period_ns = round_4((i+1)*d / 100);
sx_table[i].reg_value = (i+1)*0x10;
}
sx_table[7].reg_value = 0;
sx_table[8].period_ns = 0;
sx_table[8].reg_value = 0;
}
/*
* check and, maybe, map an init- or "clock:"- argument.
*/
static uchar
set_clk_freq(int freq, int *mhz)
{
int x = freq;
if (WD33C93_FS_8_10 == freq)
freq = 8;
else if (WD33C93_FS_12_15 == freq)
freq = 12;
else if (WD33C93_FS_16_20 == freq)
freq = 16;
else if (freq > 7 && freq < 11)
x = WD33C93_FS_8_10;
else if (freq > 11 && freq < 16)
x = WD33C93_FS_12_15;
else if (freq > 15 && freq < 21)
x = WD33C93_FS_16_20;
else {
/* Hmm, wouldn't it be safer to assume highest freq here? */
x = WD33C93_FS_8_10;
freq = 8;
}
*mhz = freq;
return x;
}
/*
* to be used with the resync: fast: ... options
*/
static inline void set_resync ( struct WD33C93_hostdata *hd, int mask )
{
int i;
for (i = 0; i < 8; i++)
if (mask & (1 << i))
hd->sync_stat[i] = SS_UNSET;
}
void
wd33c93_init(struct Scsi_Host *instance, const wd33c93_regs regs,
dma_setup_t setup, dma_stop_t stop, int clock_freq)
@ -1798,7 +1943,8 @@ wd33c93_init(struct Scsi_Host *instance, const wd33c93_regs regs,
hostdata = (struct WD33C93_hostdata *) instance->hostdata;
hostdata->regs = regs;
hostdata->clock_freq = clock_freq;
hostdata->clock_freq = set_clk_freq(clock_freq, &i);
calc_sx_table(i, hostdata->sx_table);
hostdata->dma_setup = setup;
hostdata->dma_stop = stop;
hostdata->dma_bounce_buffer = NULL;
@ -1806,7 +1952,8 @@ wd33c93_init(struct Scsi_Host *instance, const wd33c93_regs regs,
for (i = 0; i < 8; i++) {
hostdata->busy[i] = 0;
hostdata->sync_xfer[i] =
calc_sync_xfer(DEFAULT_SX_PER / 4, DEFAULT_SX_OFF);
calc_sync_xfer(DEFAULT_SX_PER / 4, DEFAULT_SX_OFF,
0, hostdata->sx_table);
hostdata->sync_stat[i] = SS_UNSET; /* using default sync values */
#ifdef PROC_STATISTICS
hostdata->cmd_cnt[i] = 0;
@ -1828,6 +1975,8 @@ wd33c93_init(struct Scsi_Host *instance, const wd33c93_regs regs,
hostdata->default_sx_per = DEFAULT_SX_PER;
hostdata->no_sync = 0xff; /* sync defaults to off */
hostdata->no_dma = 0; /* default is DMA enabled */
hostdata->fast = 0; /* default is Fast SCSI transfers disabled */
hostdata->dma_mode = CTRL_DMA; /* default is Single Byte DMA */
#ifdef PROC_INTERFACE
hostdata->proc = PR_VERSION | PR_INFO | PR_STATISTICS |
@ -1839,6 +1988,11 @@ wd33c93_init(struct Scsi_Host *instance, const wd33c93_regs regs,
#endif
#endif
if (check_setup_args("clock", &flags, &val, buf)) {
hostdata->clock_freq = set_clk_freq(val, &val);
calc_sx_table(val, hostdata->sx_table);
}
if (check_setup_args("nosync", &flags, &val, buf))
hostdata->no_sync = val;
@ -1847,7 +2001,8 @@ wd33c93_init(struct Scsi_Host *instance, const wd33c93_regs regs,
if (check_setup_args("period", &flags, &val, buf))
hostdata->default_sx_per =
sx_table[round_period((unsigned int) val)].period_ns;
hostdata->sx_table[round_period((unsigned int) val,
hostdata->sx_table)].period_ns;
if (check_setup_args("disconnect", &flags, &val, buf)) {
if ((val >= DIS_NEVER) && (val <= DIS_ALWAYS))
@ -1862,17 +2017,12 @@ wd33c93_init(struct Scsi_Host *instance, const wd33c93_regs regs,
if (check_setup_args("debug", &flags, &val, buf))
hostdata->args = val & DB_MASK;
if (check_setup_args("clock", &flags, &val, buf)) {
if (val > 7 && val < 11)
val = WD33C93_FS_8_10;
else if (val > 11 && val < 16)
val = WD33C93_FS_12_15;
else if (val > 15 && val < 21)
val = WD33C93_FS_16_20;
else
val = WD33C93_FS_8_10;
hostdata->clock_freq = val;
}
if (check_setup_args("burst", &flags, &val, buf))
hostdata->dma_mode = val ? CTRL_BURST:CTRL_DMA;
if (WD33C93_FS_16_20 == hostdata->clock_freq /* divisor 4 */
&& check_setup_args("fast", &flags, &val, buf))
hostdata->fast = !!val;
if ((i = check_setup_args("next", &flags, &val, buf))) {
while (i)
@ -1917,53 +2067,65 @@ wd33c93_proc_info(struct Scsi_Host *instance, char *buf, char **start, off_t off
char tbuf[128];
struct WD33C93_hostdata *hd;
struct scsi_cmnd *cmd;
int x, i;
int x;
static int stop = 0;
hd = (struct WD33C93_hostdata *) instance->hostdata;
/* If 'in' is TRUE we need to _read_ the proc file. We accept the following
* keywords (same format as command-line, but only ONE per read):
* keywords (same format as command-line, but arguments are not optional):
* debug
* disconnect
* period
* resync
* proc
* nodma
* level2
* burst
* fast
* nosync
*/
if (in) {
buf[len] = '\0';
bp = buf;
for (bp = buf; *bp; ) {
while (',' == *bp || ' ' == *bp)
++bp;
if (!strncmp(bp, "debug:", 6)) {
bp += 6;
hd->args = simple_strtoul(bp, NULL, 0) & DB_MASK;
hd->args = simple_strtoul(bp+6, &bp, 0) & DB_MASK;
} else if (!strncmp(bp, "disconnect:", 11)) {
bp += 11;
x = simple_strtoul(bp, NULL, 0);
x = simple_strtoul(bp+11, &bp, 0);
if (x < DIS_NEVER || x > DIS_ALWAYS)
x = DIS_ADAPTIVE;
hd->disconnect = x;
} else if (!strncmp(bp, "period:", 7)) {
bp += 7;
x = simple_strtoul(bp, NULL, 0);
x = simple_strtoul(bp+7, &bp, 0);
hd->default_sx_per =
sx_table[round_period((unsigned int) x)].period_ns;
hd->sx_table[round_period((unsigned int) x,
hd->sx_table)].period_ns;
} else if (!strncmp(bp, "resync:", 7)) {
bp += 7;
x = simple_strtoul(bp, NULL, 0);
for (i = 0; i < 7; i++)
if (x & (1 << i))
hd->sync_stat[i] = SS_UNSET;
set_resync(hd, (int)simple_strtoul(bp+7, &bp, 0));
} else if (!strncmp(bp, "proc:", 5)) {
bp += 5;
hd->proc = simple_strtoul(bp, NULL, 0);
hd->proc = simple_strtoul(bp+5, &bp, 0);
} else if (!strncmp(bp, "nodma:", 6)) {
bp += 6;
hd->no_dma = simple_strtoul(bp, NULL, 0);
hd->no_dma = simple_strtoul(bp+6, &bp, 0);
} else if (!strncmp(bp, "level2:", 7)) {
bp += 7;
hd->level2 = simple_strtoul(bp, NULL, 0);
hd->level2 = simple_strtoul(bp+7, &bp, 0);
} else if (!strncmp(bp, "burst:", 6)) {
hd->dma_mode =
simple_strtol(bp+6, &bp, 0) ? CTRL_BURST:CTRL_DMA;
} else if (!strncmp(bp, "fast:", 5)) {
x = !!simple_strtol(bp+5, &bp, 0);
if (x != hd->fast)
set_resync(hd, 0xff);
hd->fast = x;
} else if (!strncmp(bp, "nosync:", 7)) {
x = simple_strtoul(bp+7, &bp, 0);
set_resync(hd, x ^ hd->no_sync);
hd->no_sync = x;
} else {
break; /* unknown keyword,syntax-error,... */
}
}
return len;
}
@ -1977,8 +2139,9 @@ wd33c93_proc_info(struct Scsi_Host *instance, char *buf, char **start, off_t off
strcat(bp, tbuf);
}
if (hd->proc & PR_INFO) {
sprintf(tbuf, "\nclock_freq=%02x no_sync=%02x no_dma=%d",
hd->clock_freq, hd->no_sync, hd->no_dma);
sprintf(tbuf, "\nclock_freq=%02x no_sync=%02x no_dma=%d"
" dma_mode=%02x fast=%d",
hd->clock_freq, hd->no_sync, hd->no_dma, hd->dma_mode, hd->fast);
strcat(bp, tbuf);
strcat(bp, "\nsync_xfer[] = ");
for (x = 0; x < 7; x++) {

6
drivers/scsi/wd33c93.h
View File

@ -155,6 +155,9 @@
#define WD33C93_FS_12_15 OWNID_FS_12
#define WD33C93_FS_16_20 OWNID_FS_16
/* pass input-clock explicitely. accepted mhz values are 8-10,12-20 */
#define WD33C93_FS_MHZ(mhz) (mhz)
/* Control register */
#define CTRL_HSP 0x01
#define CTRL_HA 0x02
@ -253,6 +256,9 @@ struct WD33C93_hostdata {
uchar sync_stat[8]; /* status of sync negotiation per target */
uchar no_sync; /* bitmask: don't do sync on these targets */
uchar no_dma; /* set this flag to disable DMA */
uchar dma_mode; /* DMA Burst Mode or Single Byte DMA */
uchar fast; /* set this flag to enable Fast SCSI */
struct sx_period sx_table[9]; /* transfer periods for actual DTC-setting */
#ifdef PROC_INTERFACE
uchar proc; /* bitmask: what's in proc output */
#ifdef PROC_STATISTICS

3
include/scsi/scsi_tgt_if.h
View File

@ -83,8 +83,5 @@ struct tgt_event {
} __attribute__ ((aligned (sizeof(uint64_t))));
#define TGT_RING_SIZE (1UL << 16)
#define TGT_RING_PAGES (TGT_RING_SIZE >> PAGE_SHIFT)
#define TGT_EVENT_PER_PAGE (PAGE_SIZE / sizeof(struct tgt_event))
#define TGT_MAX_EVENTS (TGT_EVENT_PER_PAGE * TGT_RING_PAGES)
#endif

1
include/scsi/scsi_transport.h
View File

@ -22,6 +22,7 @@
#include <linux/transport_class.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_device.h>
struct scsi_transport_template {
/* the attribute containers */