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-rw-r--r--drivers/scsi/aic7xxx/aic79xx_osm.c1
-rw-r--r--drivers/scsi/aic94xx/aic94xx_seq.c13
-rw-r--r--drivers/scsi/aic94xx/aic94xx_seq.h1
-rw-r--r--drivers/scsi/lpfc/lpfc_init.c97
-rw-r--r--drivers/scsi/lpfc/lpfc_sli.c12
-rw-r--r--drivers/scsi/megaraid.c2
-rw-r--r--drivers/scsi/megaraid/megaraid_sas.c90
-rw-r--r--drivers/scsi/megaraid/megaraid_sas.h6
-rw-r--r--drivers/scsi/scsi_proc.c5
-rw-r--r--drivers/scsi/scsi_scan.c14
-rw-r--r--drivers/scsi/scsi_sysfs.c2
-rw-r--r--drivers/scsi/scsi_tgt_if.c8
-rw-r--r--drivers/scsi/sgiwd93.c5
-rw-r--r--drivers/scsi/wd33c93.c321
-rw-r--r--drivers/scsi/wd33c93.h6
15 files changed, 480 insertions, 103 deletions
diff --git a/drivers/scsi/aic7xxx/aic79xx_osm.c b/drivers/scsi/aic7xxx/aic79xx_osm.c
index c7fe478f481..2be03e975d9 100644
--- a/drivers/scsi/aic7xxx/aic79xx_osm.c
+++ b/drivers/scsi/aic7xxx/aic79xx_osm.c
@@ -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);
}
diff --git a/drivers/scsi/aic94xx/aic94xx_seq.c b/drivers/scsi/aic94xx/aic94xx_seq.c
index eae7a247bec..c750fbf7013 100644
--- a/drivers/scsi/aic94xx/aic94xx_seq.c
+++ b/drivers/scsi/aic94xx/aic94xx_seq.c
@@ -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",
diff --git a/drivers/scsi/aic94xx/aic94xx_seq.h b/drivers/scsi/aic94xx/aic94xx_seq.h
index 9437ff0ae3a..2ea6a0d5220 100644
--- a/drivers/scsi/aic94xx/aic94xx_seq.h
+++ b/drivers/scsi/aic94xx/aic94xx_seq.h
@@ -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 {
diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
index afca45cdbce..9d014e5a81c 100644
--- a/drivers/scsi/lpfc/lpfc_init.c
+++ b/drivers/scsi/lpfc/lpfc_init.c
@@ -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
diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
index a4128e19338..9fb6960a8ad 100644
--- a/drivers/scsi/lpfc/lpfc_sli.c
+++ b/drivers/scsi/lpfc/lpfc_sli.c
@@ -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++;
/*
diff --git a/drivers/scsi/megaraid.c b/drivers/scsi/megaraid.c
index 808a1b8c404..0aa3304f6b9 100644
--- a/drivers/scsi/megaraid.c
+++ b/drivers/scsi/megaraid.c
@@ -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);
diff --git a/drivers/scsi/megaraid/megaraid_sas.c b/drivers/scsi/megaraid/megaraid_sas.c
index 15e24fcc84f..7a812677ff8 100644
--- a/drivers/scsi/megaraid/megaraid_sas.c
+++ b/drivers/scsi/megaraid/megaraid_sas.c
@@ -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;
@@ -1010,6 +1030,49 @@ static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
}
/**
+ * 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
* @cmd: AEN command completed by the ISR
@@ -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);
}
diff --git a/drivers/scsi/megaraid/megaraid_sas.h b/drivers/scsi/megaraid/megaraid_sas.h
index cacb3ad9252..e862992ee37 100644
--- a/drivers/scsi/megaraid/megaraid_sas.h
+++ b/drivers/scsi/megaraid/megaraid_sas.h
@@ -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
diff --git a/drivers/scsi/scsi_proc.c b/drivers/scsi/scsi_proc.c
index 69d6e9b198c..bb6f051beda 100644
--- a/drivers/scsi/scsi_proc.c
+++ b/drivers/scsi/scsi_proc.c
@@ -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
diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c
index d6fe756eb37..0949145304e 100644
--- a/drivers/scsi/scsi_scan.c
+++ b/drivers/scsi/scsi_scan.c
@@ -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,
diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c
index 259c90cfa36..c275dcac3f1 100644
--- a/drivers/scsi/scsi_sysfs.c
+++ b/drivers/scsi/scsi_sysfs.c
@@ -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);
diff --git a/drivers/scsi/scsi_tgt_if.c b/drivers/scsi/scsi_tgt_if.c
index f2344ab8def..0e08817fdec 100644
--- a/drivers/scsi/scsi_tgt_if.c
+++ b/drivers/scsi/scsi_tgt_if.c
@@ -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];
diff --git a/drivers/scsi/sgiwd93.c b/drivers/scsi/sgiwd93.c
index e81f97a35bc..a15752b3799 100644
--- a/drivers/scsi/sgiwd93.c
+++ b/drivers/scsi/sgiwd93.c
@@ -244,9 +244,10 @@ 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));
- hdata->wh.no_sync = 0;
+ if (hdata->wh.no_sync == 0xff)
+ hdata->wh.no_sync = 0;
if (request_irq(irq, sgiwd93_intr, 0, "SGI WD93", (void *) host)) {
printk(KERN_WARNING "sgiwd93: Could not register irq %d "
diff --git a/drivers/scsi/wd33c93.c b/drivers/scsi/wd33c93.c
index 835751600e9..fa4e08e508a 100644
--- a/drivers/scsi/wd33c93.c
+++ b/drivers/scsi/wd33c93.c
@@ -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++) {
diff --git a/drivers/scsi/wd33c93.h b/drivers/scsi/wd33c93.h
index edcb0365cf0..61ffb860dac 100644
--- a/drivers/scsi/wd33c93.h
+++ b/drivers/scsi/wd33c93.h
@@ -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
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-16 15:10:44 +0000