* 2.1b1 04/01/31 GL (applied 05.04) Remove internal *
* command-queuing. *
* 2.1b2 04/02/01 CH (applied 05.04) Fix error-handling *
+ * 2.1c 04/05/23 GL Update to use the new pci_driver API, *
+ * some scsi EH updates, more cleanup. *
+ * 2.1d 04/05/27 GL Moved setting of scan_devices to *
+ * slave_alloc/_configure/_destroy, as *
+ * suggested by CH. *
***********************************************************************/
/* Uncomment SA_INTERRUPT, if the driver refuses to share its IRQ with other devices */
#include <linux/init.h>
#include <linux/spinlock.h>
-#if defined(MODULE)
static struct pci_device_id tmscsim_pci_tbl[] = {
{
.vendor = PCI_VENDOR_ID_AMD,
{ } /* Terminating entry */
};
MODULE_DEVICE_TABLE(pci, tmscsim_pci_tbl);
-#endif
-
+
#define USE_SPINLOCKS 1
#define DC390_IFLAGS unsigned long iflags
static int DC390_release(struct Scsi_Host *host);
static int dc390_shutdown (struct Scsi_Host *host);
+static int DC390_proc_info (struct Scsi_Host *shpnt, char *buffer, char **start,
+ off_t offset, int length, int inout);
static PACB dc390_pACB_start= NULL;
static PACB dc390_pACB_current = NULL;
/* Startup values, to be overriden on the commandline */
static int tmscsim[] = {-2, -2, -2, -2, -2, -2};
+static int tmscsim_paramnum = ARRAY_SIZE(tmscsim);
-#if defined(MODULE)
-MODULE_PARM(tmscsim, "1-6i");
+module_param_array(tmscsim, int, tmscsim_paramnum, 0);
MODULE_PARM_DESC(tmscsim, "Host SCSI ID, Speed (0=10MHz), Device Flags, Adapter Flags, Max Tags (log2(tags)-1), DelayReset (s)");
MODULE_AUTHOR("C.L. Huang / Kurt Garloff");
MODULE_DESCRIPTION("SCSI host adapter driver for Tekram DC390 and other AMD53C974A based PCI SCSI adapters");
MODULE_LICENSE("GPL");
-
MODULE_SUPPORTED_DEVICE("sd,sr,sg,st");
-#endif
static PVOID dc390_phase0[]={
dc390_DataOut_0,
}
}
+static struct scatterlist* dc390_sg_build_single(struct scatterlist *sg, void *addr, unsigned int length)
+{
+ memset(sg, 0, sizeof(struct scatterlist));
+ sg->page = virt_to_page(addr);
+ sg->length = length;
+ sg->offset = (unsigned long)addr & ~PAGE_MASK;
+ return sg;
+}
/* Create pci mapping */
static int dc390_pci_map (PSRB pSRB)
Scsi_Cmnd *pcmd = pSRB->pcmd;
struct pci_dev *pdev = pSRB->pSRBDCB->pDCBACB->pdev;
dc390_cmd_scp_t* cmdp = ((dc390_cmd_scp_t*)(&pcmd->SCp));
+
/* Map sense buffer */
if (pSRB->SRBFlag & AUTO_REQSENSE) {
- sg_dma_address(&pSRB->Segmentx) = cmdp->saved_dma_handle =
- pci_map_page(pdev, virt_to_page(pcmd->sense_buffer),
- (unsigned long)pcmd->sense_buffer & ~PAGE_MASK, sizeof(pcmd->sense_buffer),
- DMA_FROM_DEVICE);
- sg_dma_len(&pSRB->Segmentx) = sizeof(pcmd->sense_buffer);
- pSRB->SGcount = 1;
- pSRB->pSegmentList = (PSGL) &pSRB->Segmentx;
+ pSRB->pSegmentList = dc390_sg_build_single(&pSRB->Segmentx, pcmd->sense_buffer, sizeof(pcmd->sense_buffer));
+ pSRB->SGcount = pci_map_sg(pdev, pSRB->pSegmentList, 1,
+ DMA_FROM_DEVICE);
+ cmdp->saved_dma_handle = sg_dma_address(pSRB->pSegmentList);
+
+ /* TODO: error handling */
+ if (pSRB->SGcount != 1)
+ error = 1;
DEBUG1(printk("%s(): Mapped sense buffer %p at %x\n", __FUNCTION__, pcmd->sense_buffer, cmdp->saved_dma_handle));
- /* Make SG list */
+ /* Map SG list */
} else if (pcmd->use_sg) {
- pSRB->pSegmentList = (PSGL) pcmd->request_buffer;
- pSRB->SGcount = pci_map_sg(pdev, pSRB->pSegmentList,
- pcmd->use_sg,
- scsi_to_pci_dma_dir(pcmd->sc_data_direction));
+ pSRB->pSegmentList = (PSGL) pcmd->request_buffer;
+ pSRB->SGcount = pci_map_sg(pdev, pSRB->pSegmentList, pcmd->use_sg,
+ scsi_to_pci_dma_dir(pcmd->sc_data_direction));
/* TODO: error handling */
if (!pSRB->SGcount)
error = 1;
- DEBUG1(printk("%s(): Mapped SG %p with %d (%d) elements\n", __FUNCTION__, pcmd->request_buffer, pSRB->SGcount, pcmd->use_sg));
+ DEBUG1(printk("%s(): Mapped SG %p with %d (%d) elements\n",\
+ __FUNCTION__, pcmd->request_buffer, pSRB->SGcount, pcmd->use_sg));
/* Map single segment */
} else if (pcmd->request_buffer && pcmd->request_bufflen) {
- sg_dma_address(&pSRB->Segmentx) = cmdp->saved_dma_handle =
- pci_map_page(pdev, virt_to_page(pcmd->request_buffer),
- (unsigned long)pcmd->request_buffer & ~PAGE_MASK,
- pcmd->request_bufflen, scsi_to_pci_dma_dir(pcmd->sc_data_direction));
+ pSRB->pSegmentList = dc390_sg_build_single(&pSRB->Segmentx, pcmd->request_buffer, pcmd->request_bufflen);
+ pSRB->SGcount = pci_map_sg(pdev, pSRB->pSegmentList, 1,
+ scsi_to_pci_dma_dir(pcmd->sc_data_direction));
+ cmdp->saved_dma_handle = sg_dma_address(pSRB->pSegmentList);
+
/* TODO: error handling */
- sg_dma_len(&pSRB->Segmentx) = pcmd->request_bufflen;
- pSRB->SGcount = 1;
- pSRB->pSegmentList = (PSGL) &pSRB->Segmentx;
+ if (pSRB->SGcount != 1)
+ error = 1;
DEBUG1(printk("%s(): Mapped request buffer %p at %x\n", __FUNCTION__, pcmd->request_buffer, cmdp->saved_dma_handle));
/* No mapping !? */
} else
pSRB->SGcount = 0;
+
return error;
}
{
Scsi_Cmnd* pcmd = pSRB->pcmd;
struct pci_dev *pdev = pSRB->pSRBDCB->pDCBACB->pdev;
- dc390_cmd_scp_t* cmdp = ((dc390_cmd_scp_t*)(&pcmd->SCp));
+ DEBUG1(dc390_cmd_scp_t* cmdp = ((dc390_cmd_scp_t*)(&pcmd->SCp)));
if (pSRB->SRBFlag) {
- pci_unmap_page(pdev, cmdp->saved_dma_handle,
- sizeof(pcmd->sense_buffer), DMA_FROM_DEVICE);
+ pci_unmap_sg(pdev, &pSRB->Segmentx, 1, DMA_FROM_DEVICE);
DEBUG1(printk("%s(): Unmapped sense buffer at %x\n", __FUNCTION__, cmdp->saved_dma_handle));
} else if (pcmd->use_sg) {
- pci_unmap_sg(pdev, pcmd->request_buffer, pcmd->use_sg,
- scsi_to_pci_dma_dir(pcmd->sc_data_direction));
+ pci_unmap_sg(pdev, pcmd->request_buffer, pcmd->use_sg, scsi_to_pci_dma_dir(pcmd->sc_data_direction));
DEBUG1(printk("%s(): Unmapped SG at %p with %d elements\n", __FUNCTION__, pcmd->request_buffer, pcmd->use_sg));
} else if (pcmd->request_buffer && pcmd->request_bufflen) {
- pci_unmap_page(pdev,
- cmdp->saved_dma_handle,
- pcmd->request_bufflen,
- scsi_to_pci_dma_dir(pcmd->sc_data_direction));
+ pci_unmap_sg(pdev, &pSRB->Segmentx, 1, scsi_to_pci_dma_dir(pcmd->sc_data_direction));
DEBUG1(printk("%s(): Unmapped request buffer at %x\n", __FUNCTION__, cmdp->saved_dma_handle));
}
}
* 2.0.x: always return 0
* 2.1.x: old model: (use_new_eh_code == 0): like 2.0.x
* TO BE DONE:
- * new model: return 0 if successful
- * return 1 if command cannot be queued (queue full)
+ * new model: return 0 if successful, or must not be re-queued
+ * return 1 if command cannot be queued (queue full)
* command will be inserted in midlevel queue then ...
*
***********************************************************************/
static int DC390_queue_command (Scsi_Cmnd *cmd, void (* done)(Scsi_Cmnd *))
{
- PDCB pDCB;
+ PDCB pDCB = (PDCB) cmd->device->hostdata;
PSRB pSRB;
PACB pACB = (PACB) cmd->device->host->hostdata;
/* TODO: Change the policy: Always accept TEST_UNIT_READY or INQUIRY
* commands and alloc a DCB for the device if not yet there. DCB will
* be removed in dc390_SRBdone if SEL_TIMEOUT */
-
- if( (pACB->scan_devices == END_SCAN) && (cmd->cmnd[0] != INQUIRY) )
- pACB->scan_devices = 0;
-
- else if( (pACB->scan_devices) && (cmd->cmnd[0] == READ_6) )
- pACB->scan_devices = 0;
-
- if( (pACB->scan_devices || cmd->cmnd[0] == TEST_UNIT_READY || cmd->cmnd[0] == INQUIRY) &&
- !(pACB->DCBmap[cmd->device->id] & (1 << cmd->device->lun)) )
- {
- pACB->scan_devices = 1;
-
- dc390_initDCB( pACB, &pDCB, cmd->device->id, cmd->device->lun );
- if (!pDCB)
- {
- printk (KERN_ERR "DC390: kmalloc for DCB failed, target %02x lun %02x\n",
- cmd->device->id, cmd->device->lun);
- goto fail;
- }
-
- }
- else if( !(pACB->scan_devices) && !(pACB->DCBmap[cmd->device->id] & (1 << cmd->device->lun)) )
- {
+ if (!(pACB->scan_devices) && !(pACB->DCBmap[cmd->device->id] & (1 << cmd->device->lun))) {
printk(KERN_INFO "DC390: Ignore target %02x lun %02x\n",
cmd->device->id, cmd->device->lun);
goto fail;
}
- else
- {
- pDCB = dc390_findDCB (pACB, cmd->device->id, cmd->device->lun);
- if (!pDCB)
- { /* should never happen */
- printk (KERN_ERR "DC390: no DCB failed, target %02x lun %02x\n",
- cmd->device->id, cmd->device->lun);
- goto fail;
- }
+
+ /* Should it be: BUG_ON(!pDCB); ? */
+
+ if (!pDCB)
+ { /* should never happen */
+ printk (KERN_ERR "DC390: no DCB found, target %02x lun %02x\n",
+ cmd->device->id, cmd->device->lun);
+ goto fail;
}
pACB->Cmds++;
static int DC390_abort (Scsi_Cmnd *cmd)
{
- PDCB pDCB;
+ PDCB pDCB = (PDCB) cmd->device->hostdata;
PSRB pSRB, psrb;
UINT count, i;
int status;
printk ("DC390: Abort command (pid %li, Device %02i-%02i)\n",
cmd->pid, cmd->device->id, cmd->device->lun);
- pDCB = dc390_findDCB (pACB, cmd->device->id, cmd->device->lun);
if( !pDCB ) goto NOT_RUN;
/* Added 98/07/02 KG */
{
PEEprom prom;
UCHAR index;
- PDCB pDCB, pDCB2;
+ PDCB pDCB, pDCB2 = 0;
pDCB = kmalloc (sizeof(DC390_DCB), GFP_ATOMIC);
DCBDEBUG(printk (KERN_INFO "DC390: alloc mem for DCB (ID %i, LUN %i): %p\n", \
id, lun, pDCB));
-
+
*ppDCB = pDCB;
- if (!pDCB) return;
- pDCB2 = 0;
+ if (!pDCB)
+ return;
+
if( pACB->DCBCnt == 0 )
{
pACB->pLinkDCB = pDCB;
pACB->SRBCount = MAX_SRB_CNT;
pACB->AdapterIndex = index;
pACB->status = 0;
- psh->this_id = dc390_eepromBuf[index][EE_ADAPT_SCSI_ID];
- pACB->DeviceCnt = 0;
pACB->DCBCnt = 0;
pACB->TagMaxNum = 2 << dc390_eepromBuf[index][EE_TAG_CMD_NUM];
pACB->ACBFlag = 0;
*
* Inputs : host - pointer to this host adapter's structure
* io_port - IO ports mapped to this adapter
- * Irq - IRQ assigned to this adpater
+ * irq - IRQ assigned to this adpater
* struct pci_dev - PCI access handle
* index - Adapter index
*
* Note: written in capitals, because the locking is only done here,
* not in DC390_detect, called from outside
***********************************************************************/
-
-static int __init DC390_init (PSHT psht, ULONG io_port, UCHAR Irq, struct pci_dev *pdev, UCHAR index)
+static int __init dc390_init (PSH psh, unsigned long io_port, u8 irq, struct pci_dev *pdev, UCHAR index)
{
- PSH psh;
PACB pACB;
if (dc390_CheckEEpromCheckSum (PDEV, index))
dc390_check_for_safe_settings ();
dc390_EEprom_Override (index);
}
-
- psh = scsi_register( psht, sizeof(DC390_ACB) );
- if( !psh ) return( -1 );
-
- scsi_set_device(psh, &pdev->dev);
pACB = (PACB) psh->hostdata;
DEBUG0(printk(KERN_INFO "DC390: pSH = %8x, Index %02i\n", (UINT) psh, index));
- dc390_initACB( psh, io_port, Irq, index );
+ dc390_initACB( psh, io_port, irq, index );
PDEVSET;
- if( !dc390_initAdapter( psh, io_port, Irq, index ) )
+ if( !dc390_initAdapter( psh, io_port, irq, index ) )
{
- DEBUG0(printk("DC390: pACB = %8x, pDCBmap = %8x, pSRB_array = %8x\n",\
- (UINT) pACB, (UINT) pACB->DCBmap, (UINT) pACB->SRB_array));
- DEBUG0(printk("DC390: ACB size= %4x, DCB size= %4x, SRB size= %4x\n",\
- sizeof(DC390_ACB), sizeof(DC390_DCB), sizeof(DC390_SRB) ));
return (0);
}
else
PCI_WRITE_CONFIG_WORD (PDEV, PCI_STATUS, (PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY));
}
-int __init DC390_detect (Scsi_Host_Template *psht)
+/**
+ * dc390_slave_alloc - Called by the scsi mid layer to tell us about a new
+ * scsi device that we need to deal with.
+ *
+ * @scsi_device: The new scsi device that we need to handle.
+ */
+static int dc390_slave_alloc(struct scsi_device *scsi_device)
+{
+ PDCB pDCB;
+ PACB pACB = (PACB) scsi_device->host->hostdata;
+ dc390_initDCB(pACB, &pDCB, scsi_device->id, scsi_device->lun);
+ if (pDCB != NULL) {
+ scsi_device->hostdata = pDCB;
+ pACB->scan_devices = 1;
+ return 0;
+ }
+ return -ENOMEM;
+}
+
+/**
+ * dc390_slave_destroy - Called by the scsi mid layer to tell us about a
+ * device that is going away.
+ *
+ * @scsi_device: The scsi device that we need to remove.
+ */
+static void dc390_slave_destroy(struct scsi_device *scsi_device)
+{
+ PACB pACB = (PACB) scsi_device->host->hostdata;
+ PDCB pDCB = (PDCB) scsi_device->hostdata;
+ pACB->scan_devices = 0;
+ if (pDCB != NULL)
+ dc390_remove_dev(pACB, pDCB);
+ else
+ printk(KERN_ERR"%s() called for non-existing device!\n", __FUNCTION__);
+}
+
+static int dc390_slave_configure(struct scsi_device *scsi_device)
{
- struct pci_dev *pdev = NULL;
- UCHAR irq;
- ULONG io_port;
+ PACB pACB = (PACB) scsi_device->host->hostdata;
+ pACB->scan_devices = 0;
+ return 0;
+}
- dc390_pACB_start = NULL;
+static Scsi_Host_Template driver_template = {
+ .module = THIS_MODULE,
+ .proc_name = "tmscsim",
+ .proc_info = DC390_proc_info,
+ .name = DC390_BANNER " V" DC390_VERSION,
+ .slave_alloc = dc390_slave_alloc,
+ .slave_configure = dc390_slave_configure,
+ .slave_destroy = dc390_slave_destroy,
+ .queuecommand = DC390_queue_command,
+ .eh_abort_handler = DC390_abort,
+ .eh_bus_reset_handler = DC390_reset,
+ .bios_param = DC390_bios_param,
+ .can_queue = 42,
+ .this_id = 7,
+ .sg_tablesize = SG_ALL,
+ .cmd_per_lun = 16,
+ .use_clustering = DISABLE_CLUSTERING,
+};
- if ( PCI_PRESENT )
- while ((pdev = pci_find_device(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD53C974, pdev)))
- {
- if (pci_enable_device (pdev))
- continue;
+static int __devinit dc390_init_one(struct pci_dev *dev,
+ const struct pci_device_id *id)
+{
+ struct Scsi_Host *scsi_host;
+ unsigned long io_port;
+ u8 irq;
+ PACB pACB;
+ int ret = -ENOMEM;
- if (pci_set_dma_mask(pdev, 0xffffffff)) {
- printk(KERN_ERR "DC390(%i): No suitable DMA available.\n", dc390_adapterCnt);
- continue;
- }
- PCI_GET_IO_AND_IRQ;
- DEBUG0(printk(KERN_INFO "DC390(%i): IO_PORT=%04x,IRQ=%x\n", dc390_adapterCnt, (UINT) io_port, irq));
+ if (pci_enable_device(dev))
+ return -ENODEV;
- if( !DC390_init(psht, io_port, irq, PDEV, dc390_adapterCnt))
- {
- pci_set_master(pdev);
- dc390_set_pci_cfg (PDEV);
- dc390_adapterCnt++;
- }
+ io_port = pci_resource_start(dev, 0);
+ irq = dev->irq;
+
+ /* allocate scsi host information (includes out adapter) */
+ scsi_host = scsi_host_alloc(&driver_template, sizeof(struct _ACB));
+ if (!scsi_host)
+ goto nomem;
+
+ pACB = (PACB) scsi_host->hostdata;
+
+ if (dc390_init(scsi_host, io_port, irq, dev, dc390_adapterCnt)) {
+ ret = -EBUSY;
+ goto busy;
}
- else
- printk (KERN_ERR "DC390: No PCI BIOS found!\n");
-
- if (dc390_adapterCnt)
- psht->proc_name = "tmscsim";
- printk(KERN_INFO "DC390: %i adapters found\n", dc390_adapterCnt);
- return( dc390_adapterCnt );
+ pci_set_master(dev);
+ dc390_set_pci_cfg(dev);
+ dc390_adapterCnt++;
+
+ /* get the scsi mid level to scan for new devices on the bus */
+ if (scsi_add_host(scsi_host, &dev->dev)) {
+ ret = -ENODEV;
+ goto nodev;
+ }
+ pci_set_drvdata(dev, scsi_host);
+ scsi_scan_host(scsi_host);
+
+ return 0;
+
+nodev:
+busy:
+ scsi_host_put(scsi_host);
+nomem:
+ pci_disable_device(dev);
+ return ret;
+}
+
+/**
+ * dc390_remove_one - Called to remove a single instance of the adapter.
+ *
+ * @dev: The PCI device to remove.
+ */
+static void __devexit dc390_remove_one(struct pci_dev *dev)
+{
+ struct Scsi_Host *scsi_host = pci_get_drvdata(dev);
+
+ scsi_remove_host(scsi_host);
+ DC390_release(scsi_host);
+ pci_disable_device(dev);
+ scsi_host_put(scsi_host);
+ pci_set_drvdata(dev, NULL);
}
/********************************************************************
SPRINTF(" Lost arbitrations %i, Sel. connected %i, Connected: %s\n",
pACB->SelLost, pACB->SelConn, pACB->Connected? "Yes": "No");
- SPRINTF("Nr of attached devices: %i, Nr of DCBs: %i\n", pACB->DeviceCnt, pACB->DCBCnt);
+ SPRINTF("Nr of DCBs: %i\n", pACB->DCBCnt);
SPRINTF("Map of attached LUNs: %02x %02x %02x %02x %02x %02x %02x %02x\n",
pACB->DCBmap[0], pACB->DCBmap[1], pACB->DCBmap[2], pACB->DCBmap[3],
pACB->DCBmap[4], pACB->DCBmap[5], pACB->DCBmap[6], pACB->DCBmap[7]);
static int dc390_shutdown (struct Scsi_Host *host)
{
UCHAR bval;
- PACB pACB = (PACB)(host->hostdata);
+ PACB pACB = (PACB) host->hostdata;
/* pACB->soft_reset(host); */
static void dc390_freeDCBs (struct Scsi_Host *host)
{
PDCB pDCB, nDCB;
- PACB pACB = (PACB)(host->hostdata);
+ PACB pACB = (PACB) host->hostdata;
pDCB = pACB->pLinkDCB;
if (!pDCB) return;
static int DC390_release (struct Scsi_Host *host)
{
DC390_IFLAGS;
- PACB pACB = (PACB)(host->hostdata);
+ PACB pACB = (PACB) host->hostdata;
DC390_LOCK_IO(host);
release_region(host->io_port,host->n_io_port);
dc390_freeDCBs (host);
DC390_UNLOCK_IO(host);
- scsi_unregister(host);
return( 1 );
}
-static Scsi_Host_Template driver_template = {
- .proc_name = "tmscsim",
- .proc_info = DC390_proc_info,
- .name = DC390_BANNER " V" DC390_VERSION,
- .detect = DC390_detect,
- .release = DC390_release,
- .queuecommand = DC390_queue_command,
- .eh_abort_handler = DC390_abort,
- .eh_bus_reset_handler = DC390_reset,
- .bios_param = DC390_bios_param,
- .can_queue = 42,
- .this_id = 7,
- .sg_tablesize = SG_ALL,
- .cmd_per_lun = 16,
- .use_clustering = DISABLE_CLUSTERING,
+static struct pci_driver dc390_driver = {
+ .name = "tmscsim",
+ .id_table = tmscsim_pci_tbl,
+ .probe = dc390_init_one,
+ .remove = __devexit_p(dc390_remove_one),
};
-#include "scsi_module.c"
+
+static int __init dc390_module_init(void)
+{
+ return pci_module_init(&dc390_driver);
+}
+
+static void __exit dc390_module_exit(void)
+{
+ pci_unregister_driver(&dc390_driver);
+}
+
+module_init(dc390_module_init);
+module_exit(dc390_module_exit);
git://git.onelab.eu / linux-2.6.git / blobdiff