[SCSI] gdth: switch to modern scsi host registration
- Use scsi_add_host and friends and track instances ourselves. And
generally modernize the driver's structure.
- TODO: Next we can remove the controller table
- TODO: Fix use of deprecated pci_find_device()
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
Christoph Hellwig
James Bottomley
Родитель
10e1b4bc92
Коммит
835cc24aff
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@ -119,6 +119,7 @@
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#include <linux/time.h>
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#include <linux/timer.h>
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#include <linux/dma-mapping.h>
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#include <linux/list.h>
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#ifdef GDTH_RTC
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#include <linux/mc146818rtc.h>
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@ -184,15 +185,6 @@ static void gdth_flush(gdth_ha_str *ha);
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static int gdth_halt(struct notifier_block *nb, ulong event, void *buf);
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static int gdth_queuecommand(Scsi_Cmnd *scp,void (*done)(Scsi_Cmnd *));
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static void gdth_scsi_done(struct scsi_cmnd *scp);
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#ifdef CONFIG_ISA
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static int gdth_isa_probe_one(struct scsi_host_template *, ulong32);
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#endif
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#ifdef CONFIG_EISA
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static int gdth_eisa_probe_one(struct scsi_host_template *, ushort);
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#endif
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#ifdef CONFIG_PCI
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static int gdth_pci_probe_one(struct scsi_host_template *, gdth_pci_str *, int);
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#endif
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#ifdef DEBUG_GDTH
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static unchar DebugState = DEBUG_GDTH;
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@ -298,8 +290,8 @@ static unchar gdth_irq_tab[6] = {0,10,11,12,14,0}; /* IRQ table */
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#endif
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static unchar gdth_polling; /* polling if TRUE */
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static int gdth_ctr_count = 0; /* controller count */
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static int gdth_ctr_released = 0; /* gdth_release() */
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static struct Scsi_Host *gdth_ctr_tab[MAXHA]; /* controller table */
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static LIST_HEAD(gdth_instances);
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static unchar gdth_write_through = FALSE; /* write through */
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static gdth_evt_str ebuffer[MAX_EVENTS]; /* event buffer */
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static int elastidx;
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@ -3872,145 +3864,6 @@ int __init option_setup(char *str)
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return 1;
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}
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static int __init gdth_detect(struct scsi_host_template *shtp)
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{
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#ifdef DEBUG_GDTH
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printk("GDT: This driver contains debugging information !! Trace level = %d\n",
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DebugState);
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printk(" Destination of debugging information: ");
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#ifdef __SERIAL__
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#ifdef __COM2__
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printk("Serial port COM2\n");
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#else
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printk("Serial port COM1\n");
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#endif
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#else
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printk("Console\n");
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#endif
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gdth_delay(3000);
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#endif
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TRACE(("gdth_detect()\n"));
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if (disable) {
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printk("GDT-HA: Controller driver disabled from command line !\n");
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return 0;
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}
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printk("GDT-HA: Storage RAID Controller Driver. Version: %s\n",GDTH_VERSION_STR);
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/* initializations */
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gdth_polling = TRUE;
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gdth_clear_events();
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/* As default we do not probe for EISA or ISA controllers */
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if (probe_eisa_isa) {
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/* scanning for controllers, at first: ISA controller */
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#ifdef CONFIG_ISA
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ulong32 isa_bios;
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for (isa_bios = 0xc8000UL; isa_bios <= 0xd8000UL;
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isa_bios += 0x8000UL) {
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if (gdth_ctr_count >= MAXHA)
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break;
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gdth_isa_probe_one(shtp, isa_bios);
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}
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#endif
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#ifdef CONFIG_EISA
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{
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ushort eisa_slot;
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for (eisa_slot = 0x1000; eisa_slot <= 0x8000; eisa_slot += 0x1000) {
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if (gdth_ctr_count >= MAXHA)
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break;
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gdth_eisa_probe_one(shtp, eisa_slot);
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}
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}
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#endif
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}
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#ifdef CONFIG_PCI
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/* scanning for PCI controllers */
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{
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gdth_pci_str pcistr[MAXHA];
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int cnt,ctr;
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cnt = gdth_search_pci(pcistr);
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printk("GDT-HA: Found %d PCI Storage RAID Controllers\n",cnt);
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gdth_sort_pci(pcistr,cnt);
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for (ctr = 0; ctr < cnt; ++ctr) {
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if (gdth_ctr_count >= MAXHA)
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break;
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gdth_pci_probe_one(shtp, pcistr, ctr);
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}
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}
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#endif /* CONFIG_PCI */
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TRACE2(("gdth_detect() %d controller detected\n",gdth_ctr_count));
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if (gdth_ctr_count > 0) {
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#ifdef GDTH_STATISTICS
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TRACE2(("gdth_detect(): Initializing timer !\n"));
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init_timer(&gdth_timer);
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gdth_timer.expires = jiffies + HZ;
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gdth_timer.data = 0L;
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gdth_timer.function = gdth_timeout;
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add_timer(&gdth_timer);
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#endif
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major = register_chrdev(0,"gdth",&gdth_fops);
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notifier_disabled = 0;
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register_reboot_notifier(&gdth_notifier);
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}
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gdth_polling = FALSE;
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return gdth_ctr_count;
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}
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static int gdth_release(struct Scsi_Host *shp)
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{
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gdth_ha_str *ha = shost_priv(shp);
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TRACE2(("gdth_release()\n"));
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if (ha->sdev) {
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scsi_free_host_dev(ha->sdev);
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ha->sdev = NULL;
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}
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gdth_flush(ha);
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if (shp->irq) {
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free_irq(shp->irq,ha);
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}
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#ifdef CONFIG_ISA
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if (shp->dma_channel != 0xff) {
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free_dma(shp->dma_channel);
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}
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#endif
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#ifdef INT_COAL
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if (ha->coal_stat)
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pci_free_consistent(ha->pdev, sizeof(gdth_coal_status) *
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MAXOFFSETS, ha->coal_stat, ha->coal_stat_phys);
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#endif
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if (ha->pscratch)
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pci_free_consistent(ha->pdev, GDTH_SCRATCH,
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ha->pscratch, ha->scratch_phys);
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if (ha->pmsg)
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pci_free_consistent(ha->pdev, sizeof(gdth_msg_str),
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ha->pmsg, ha->msg_phys);
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if (ha->ccb_phys)
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pci_unmap_single(ha->pdev,ha->ccb_phys,
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sizeof(gdth_cmd_str),PCI_DMA_BIDIRECTIONAL);
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gdth_ctr_released++;
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TRACE2(("gdth_release(): HA %d of %d\n",
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gdth_ctr_released, gdth_ctr_count));
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if (gdth_ctr_released == gdth_ctr_count) {
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#ifdef GDTH_STATISTICS
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del_timer(&gdth_timer);
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#endif
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unregister_chrdev(major,"gdth");
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unregister_reboot_notifier(&gdth_notifier);
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}
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scsi_unregister(shp);
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return 0;
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}
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static const char *gdth_ctr_name(gdth_ha_str *ha)
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{
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TRACE2(("gdth_ctr_name()\n"));
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@ -4819,10 +4672,8 @@ static int gdth_slave_configure(struct scsi_device *sdev)
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return 0;
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}
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static struct scsi_host_template driver_template = {
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static struct scsi_host_template gdth_template = {
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.name = "GDT SCSI Disk Array Controller",
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.detect = gdth_detect,
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.release = gdth_release,
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.info = gdth_info,
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.queuecommand = gdth_queuecommand,
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.eh_bus_reset_handler = gdth_eh_bus_reset,
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@ -4839,7 +4690,7 @@ static struct scsi_host_template driver_template = {
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};
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#ifdef CONFIG_ISA
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static int gdth_isa_probe_one(struct scsi_host_template *shtp, ulong32 isa_bios)
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static int gdth_isa_probe_one(ulong32 isa_bios)
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{
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struct Scsi_Host *shp;
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gdth_ha_str *ha;
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@ -4849,7 +4700,7 @@ static int gdth_isa_probe_one(struct scsi_host_template *shtp, ulong32 isa_bios)
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if (!gdth_search_isa(isa_bios))
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return -ENXIO;
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shp = scsi_register(shtp, sizeof(gdth_ha_str));
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shp = scsi_host_alloc(&gdth_template, sizeof(gdth_ha_str));
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if (!shp)
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return -ENOMEM;
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ha = shost_priv(shp);
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@ -4941,6 +4792,10 @@ static int gdth_isa_probe_one(struct scsi_host_template *shtp, ulong32 isa_bios)
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spin_lock_init(&ha->smp_lock);
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gdth_enable_int(ha);
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error = scsi_add_host(shp, NULL);
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if (error)
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goto out_free_coal_stat;
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list_add_tail(&ha->list, &gdth_instances);
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return 0;
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out_free_coal_stat:
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@ -4959,14 +4814,13 @@ static int gdth_isa_probe_one(struct scsi_host_template *shtp, ulong32 isa_bios)
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out_free_irq:
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free_irq(ha->irq, ha);
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out_host_put:
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scsi_unregister(shp);
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scsi_host_put(shp);
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return error;
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}
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#endif /* CONFIG_ISA */
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#ifdef CONFIG_EISA
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static int gdth_eisa_probe_one(struct scsi_host_template *shtp,
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ushort eisa_slot)
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static int gdth_eisa_probe_one(ushort eisa_slot)
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{
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struct Scsi_Host *shp;
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gdth_ha_str *ha;
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@ -4976,7 +4830,7 @@ static int gdth_eisa_probe_one(struct scsi_host_template *shtp,
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if (!gdth_search_eisa(eisa_slot))
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return -ENXIO;
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shp = scsi_register(shtp,sizeof(gdth_ha_str));
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shp = scsi_host_alloc(&gdth_template, sizeof(gdth_ha_str));
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if (!shp)
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return -ENOMEM;
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ha = shost_priv(shp);
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@ -5066,6 +4920,11 @@ static int gdth_eisa_probe_one(struct scsi_host_template *shtp,
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spin_lock_init(&ha->smp_lock);
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gdth_enable_int(ha);
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error = scsi_add_host(shp, NULL);
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if (error)
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goto out_free_coal_stat;
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list_add_tail(&ha->list, &gdth_instances);
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return 0;
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out_free_ccb_phys:
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@ -5086,21 +4945,20 @@ static int gdth_eisa_probe_one(struct scsi_host_template *shtp,
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free_irq(ha->irq, ha);
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gdth_ctr_count--;
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out_host_put:
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scsi_unregister(shp);
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scsi_host_put(shp);
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return error;
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}
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#endif /* CONFIG_EISA */
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#ifdef CONFIG_PCI
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static int gdth_pci_probe_one(struct scsi_host_template *shtp,
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gdth_pci_str *pcistr, int ctr)
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static int gdth_pci_probe_one(gdth_pci_str *pcistr, int ctr)
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{
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struct Scsi_Host *shp;
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gdth_ha_str *ha;
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dma_addr_t scratch_dma_handle = 0;
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int error, hanum, i;
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shp = scsi_register(shtp,sizeof(gdth_ha_str));
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shp = scsi_host_alloc(&gdth_template, sizeof(gdth_ha_str));
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if (!shp)
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return -ENOMEM;
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ha = shost_priv(shp);
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@ -5201,6 +5059,11 @@ static int gdth_pci_probe_one(struct scsi_host_template *shtp,
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spin_lock_init(&ha->smp_lock);
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gdth_enable_int(ha);
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error = scsi_add_host(shp, &pcistr[ctr].pdev->dev);
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if (error)
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goto out_free_coal_stat;
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list_add_tail(&ha->list, &gdth_instances);
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return 0;
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out_free_coal_stat:
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@ -5218,12 +5081,141 @@ static int gdth_pci_probe_one(struct scsi_host_template *shtp,
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free_irq(ha->irq, ha);
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gdth_ctr_count--;
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out_host_put:
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scsi_unregister(shp);
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scsi_host_put(shp);
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return error;
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}
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#endif /* CONFIG_PCI */
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#include "scsi_module.c"
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static void gdth_remove_one(gdth_ha_str *ha)
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{
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struct Scsi_Host *shp = ha->shost;
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TRACE2(("gdth_remove_one()\n"));
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scsi_remove_host(shp);
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if (ha->sdev) {
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scsi_free_host_dev(ha->sdev);
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ha->sdev = NULL;
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}
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gdth_flush(ha);
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if (shp->irq)
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free_irq(shp->irq,ha);
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#ifdef CONFIG_ISA
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if (shp->dma_channel != 0xff)
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free_dma(shp->dma_channel);
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#endif
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#ifdef INT_COAL
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if (ha->coal_stat)
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pci_free_consistent(ha->pdev, sizeof(gdth_coal_status) *
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MAXOFFSETS, ha->coal_stat, ha->coal_stat_phys);
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#endif
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if (ha->pscratch)
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pci_free_consistent(ha->pdev, GDTH_SCRATCH,
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ha->pscratch, ha->scratch_phys);
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if (ha->pmsg)
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pci_free_consistent(ha->pdev, sizeof(gdth_msg_str),
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ha->pmsg, ha->msg_phys);
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if (ha->ccb_phys)
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pci_unmap_single(ha->pdev,ha->ccb_phys,
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sizeof(gdth_cmd_str),PCI_DMA_BIDIRECTIONAL);
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scsi_host_put(shp);
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}
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static int __init gdth_init(void)
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{
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if (disable) {
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printk("GDT-HA: Controller driver disabled from"
|
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" command line !\n");
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return 0;
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}
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printk("GDT-HA: Storage RAID Controller Driver. Version: %s\n",
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GDTH_VERSION_STR);
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|
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/* initializations */
|
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gdth_polling = TRUE;
|
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gdth_clear_events();
|
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|
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/* As default we do not probe for EISA or ISA controllers */
|
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if (probe_eisa_isa) {
|
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/* scanning for controllers, at first: ISA controller */
|
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#ifdef CONFIG_ISA
|
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ulong32 isa_bios;
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for (isa_bios = 0xc8000UL; isa_bios <= 0xd8000UL;
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isa_bios += 0x8000UL) {
|
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if (gdth_ctr_count >= MAXHA)
|
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break;
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gdth_isa_probe_one(isa_bios);
|
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}
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#endif
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#ifdef CONFIG_EISA
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{
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ushort eisa_slot;
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for (eisa_slot = 0x1000; eisa_slot <= 0x8000;
|
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eisa_slot += 0x1000) {
|
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if (gdth_ctr_count >= MAXHA)
|
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break;
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gdth_eisa_probe_one(eisa_slot);
|
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}
|
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}
|
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#endif
|
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}
|
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|
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#ifdef CONFIG_PCI
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/* scanning for PCI controllers */
|
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{
|
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gdth_pci_str pcistr[MAXHA];
|
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int cnt,ctr;
|
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cnt = gdth_search_pci(pcistr);
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printk("GDT-HA: Found %d PCI Storage RAID Controllers\n", cnt);
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gdth_sort_pci(pcistr,cnt);
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for (ctr = 0; ctr < cnt; ++ctr) {
|
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if (gdth_ctr_count >= MAXHA)
|
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break;
|
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gdth_pci_probe_one(pcistr, ctr);
|
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}
|
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}
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#endif /* CONFIG_PCI */
|
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|
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TRACE2(("gdth_detect() %d controller detected\n", gdth_ctr_count));
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#ifdef GDTH_STATISTICS
|
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TRACE2(("gdth_detect(): Initializing timer !\n"));
|
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init_timer(&gdth_timer);
|
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gdth_timer.expires = jiffies + HZ;
|
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gdth_timer.data = 0L;
|
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gdth_timer.function = gdth_timeout;
|
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add_timer(&gdth_timer);
|
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#endif
|
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major = register_chrdev(0,"gdth", &gdth_fops);
|
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notifier_disabled = 0;
|
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register_reboot_notifier(&gdth_notifier);
|
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gdth_polling = FALSE;
|
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return 0;
|
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}
|
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|
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static void __exit gdth_exit(void)
|
||||
{
|
||||
gdth_ha_str *ha;
|
||||
|
||||
list_for_each_entry(ha, &gdth_instances, list)
|
||||
gdth_remove_one(ha);
|
||||
|
||||
#ifdef GDTH_STATISTICS
|
||||
del_timer(&gdth_timer);
|
||||
#endif
|
||||
unregister_chrdev(major,"gdth");
|
||||
unregister_reboot_notifier(&gdth_notifier);
|
||||
}
|
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|
||||
module_init(gdth_init);
|
||||
module_exit(gdth_exit);
|
||||
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#ifndef MODULE
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||||
__setup("gdth=", option_setup);
|
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#endif
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||||
|
|
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|||
|
|
@ -854,6 +854,7 @@ typedef struct {
|
|||
/* controller information structure */
|
||||
typedef struct {
|
||||
struct Scsi_Host *shost;
|
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struct list_head list;
|
||||
ushort hanum;
|
||||
ushort oem_id; /* OEM */
|
||||
ushort type; /* controller class */
|
||||
|
|
|
|||
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