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https://github.com/torvalds/linux.git
synced 2024-11-14 16:12:02 +00:00
[SCSI] gdth: split out eisa probing
Split eisa probing into it's own helper, and do proper error unwinding. Protect EISA probind by the proper CONFIG_EISA symbol. 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
parent
aed91cb520
commit
706a5d4567
@ -444,12 +444,10 @@ static void gdth_copy_internal_data(int hanum,Scsi_Cmnd *scp,
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static int gdth_internal_cache_cmd(int hanum,Scsi_Cmnd *scp);
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static int gdth_fill_cache_cmd(int hanum,Scsi_Cmnd *scp,ushort hdrive);
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static int gdth_search_eisa(ushort eisa_adr);
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static int gdth_search_pci(gdth_pci_str *pcistr);
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static void gdth_search_dev(gdth_pci_str *pcistr, ushort *cnt,
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ushort vendor, ushort dev);
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static void gdth_sort_pci(gdth_pci_str *pcistr, int cnt);
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static int gdth_init_eisa(ushort eisa_adr,gdth_ha_str *ha);
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static int gdth_init_pci(gdth_pci_str *pcistr,gdth_ha_str *ha);
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static void gdth_enable_int(int hanum);
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@ -477,6 +475,9 @@ 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 DEBUG_GDTH
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static unchar DebugState = DEBUG_GDTH;
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@ -588,8 +589,9 @@ static struct timer_list gdth_timer;
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#ifdef CONFIG_ISA
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static unchar gdth_drq_tab[4] = {5,6,7,7}; /* DRQ table */
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#endif
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#ifdef CONFIG_EISA
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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 unchar gdth_from_wait = FALSE; /* gdth_wait() */
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static int wait_index,wait_hanum; /* gdth_wait() */
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@ -824,7 +826,7 @@ static void gdth_eval_mapping(ulong32 size, ulong32 *cyls, int *heads, int *secs
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}
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/* controller search and initialization functions */
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#ifdef CONFIG_EISA
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static int __init gdth_search_eisa(ushort eisa_adr)
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{
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ulong32 id;
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@ -841,6 +843,7 @@ static int __init gdth_search_eisa(ushort eisa_adr)
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return 0;
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}
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#endif /* CONFIG_EISA */
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#ifdef CONFIG_ISA
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static int __init gdth_search_isa(ulong32 bios_adr)
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@ -975,7 +978,7 @@ static void __init gdth_sort_pci(gdth_pci_str *pcistr, int cnt)
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} while (changed);
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}
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#ifdef CONFIG_EISA
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static int __init gdth_init_eisa(ushort eisa_adr,gdth_ha_str *ha)
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{
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ulong32 retries,id;
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@ -1067,6 +1070,7 @@ static int __init gdth_init_eisa(ushort eisa_adr,gdth_ha_str *ha)
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ha->dma64_support = 0;
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return 1;
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}
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#endif /* CONFIG_EISA */
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#ifdef CONFIG_ISA
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static int __init gdth_init_isa(ulong32 bios_adr,gdth_ha_str *ha)
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@ -4296,7 +4300,6 @@ static int __init gdth_detect(Scsi_Host_Template *shtp)
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struct Scsi_Host *shp;
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gdth_pci_str pcistr[MAXHA];
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gdth_ha_str *ha;
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ushort eisa_slot;
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int i,hanum,cnt,ctr,err;
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unchar b;
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@ -4341,128 +4344,16 @@ static int __init gdth_detect(Scsi_Host_Template *shtp)
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gdth_isa_probe_one(shtp, isa_bios);
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}
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#endif
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for (eisa_slot=0x1000; eisa_slot<=0x8000; eisa_slot+=0x1000) {
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dma_addr_t scratch_dma_handle;
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scratch_dma_handle = 0;
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if (gdth_ctr_count >= MAXHA)
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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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if (gdth_search_eisa(eisa_slot)) { /* controller found */
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shp = scsi_register(shtp,sizeof(gdth_ext_str));
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if (shp == NULL)
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continue;
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ha = HADATA(shp);
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if (!gdth_init_eisa(eisa_slot,ha)) {
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scsi_unregister(shp);
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continue;
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}
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/* controller found and initialized */
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printk("Configuring GDT-EISA HA at Slot %d IRQ %u\n",
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eisa_slot>>12,ha->irq);
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if (request_irq(ha->irq,gdth_interrupt,IRQF_DISABLED,"gdth",ha)) {
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printk("GDT-EISA: Unable to allocate IRQ\n");
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scsi_unregister(shp);
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continue;
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}
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shp->unchecked_isa_dma = 0;
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shp->irq = ha->irq;
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shp->dma_channel = 0xff;
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hanum = gdth_ctr_count;
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gdth_ctr_tab[gdth_ctr_count++] = shp;
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gdth_ctr_vtab[gdth_ctr_vcount++] = shp;
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NUMDATA(shp)->hanum = (ushort)hanum;
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NUMDATA(shp)->busnum= 0;
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TRACE2(("EISA detect Bus 0: hanum %d\n",
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NUMDATA(shp)->hanum));
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ha->pccb = CMDDATA(shp);
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ha->ccb_phys = 0L;
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ha->pdev = NULL;
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ha->pscratch = pci_alloc_consistent(ha->pdev, GDTH_SCRATCH,
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&scratch_dma_handle);
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ha->scratch_phys = scratch_dma_handle;
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ha->pmsg = pci_alloc_consistent(ha->pdev, sizeof(gdth_msg_str),
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&scratch_dma_handle);
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ha->msg_phys = scratch_dma_handle;
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#ifdef INT_COAL
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ha->coal_stat = (gdth_coal_status *)
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pci_alloc_consistent(ha->pdev, sizeof(gdth_coal_status) *
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MAXOFFSETS, &scratch_dma_handle);
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ha->coal_stat_phys = scratch_dma_handle;
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#endif
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ha->ccb_phys =
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pci_map_single(ha->pdev,ha->pccb,
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sizeof(gdth_cmd_str),PCI_DMA_BIDIRECTIONAL);
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ha->scratch_busy = FALSE;
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ha->req_first = NULL;
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ha->tid_cnt = MAX_HDRIVES;
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if (max_ids > 0 && max_ids < ha->tid_cnt)
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ha->tid_cnt = max_ids;
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for (i=0; i<GDTH_MAXCMDS; ++i)
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ha->cmd_tab[i].cmnd = UNUSED_CMND;
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ha->scan_mode = rescan ? 0x10 : 0;
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if (ha->pscratch == NULL || ha->pmsg == NULL ||
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!gdth_search_drives(hanum)) {
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printk("GDT-EISA: Error during device scan\n");
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--gdth_ctr_count;
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--gdth_ctr_vcount;
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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,
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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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free_irq(ha->irq,ha);
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scsi_unregister(shp);
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continue;
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}
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if (hdr_channel < 0 || hdr_channel > ha->bus_cnt)
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hdr_channel = ha->bus_cnt;
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ha->virt_bus = hdr_channel;
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#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,20) && \
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LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
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shp->highmem_io = 0;
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#endif
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if (ha->cache_feat & ha->raw_feat & ha->screen_feat & GDT_64BIT)
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shp->max_cmd_len = 16;
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shp->max_id = ha->tid_cnt;
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shp->max_lun = MAXLUN;
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shp->max_channel = virt_ctr ? 0 : ha->bus_cnt;
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if (virt_ctr) {
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virt_ctr = 1;
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/* register addit. SCSI channels as virtual controllers */
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for (b = 1; b < ha->bus_cnt + 1; ++b) {
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shp = scsi_register(shtp,sizeof(gdth_num_str));
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shp->unchecked_isa_dma = 0;
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shp->irq = ha->irq;
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shp->dma_channel = 0xff;
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gdth_ctr_vtab[gdth_ctr_vcount++] = shp;
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NUMDATA(shp)->hanum = (ushort)hanum;
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NUMDATA(shp)->busnum = b;
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}
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}
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spin_lock_init(&ha->smp_lock);
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gdth_enable_int(hanum);
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}
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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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/* scanning for PCI controllers */
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@ -5701,6 +5592,148 @@ static int gdth_isa_probe_one(struct scsi_host_template *shtp, ulong32 isa_bios)
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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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{
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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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u8 b;
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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_ext_str));
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if (!shp)
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return -ENOMEM;
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ha = HADATA(shp);
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error = -ENODEV;
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if (!gdth_init_eisa(eisa_slot,ha))
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goto out_host_put;
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/* controller found and initialized */
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printk("Configuring GDT-EISA HA at Slot %d IRQ %u\n",
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eisa_slot >> 12, ha->irq);
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error = request_irq(ha->irq, gdth_interrupt, IRQF_DISABLED, "gdth", ha);
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if (error) {
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printk("GDT-EISA: Unable to allocate IRQ\n");
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goto out_host_put;
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}
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shp->unchecked_isa_dma = 0;
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shp->irq = ha->irq;
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shp->dma_channel = 0xff;
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hanum = gdth_ctr_count;
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gdth_ctr_tab[gdth_ctr_count++] = shp;
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gdth_ctr_vtab[gdth_ctr_vcount++] = shp;
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NUMDATA(shp)->hanum = (ushort)hanum;
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NUMDATA(shp)->busnum= 0;
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TRACE2(("EISA detect Bus 0: hanum %d\n",
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NUMDATA(shp)->hanum));
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ha->pccb = CMDDATA(shp);
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ha->ccb_phys = 0L;
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error = -ENOMEM;
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ha->pdev = NULL;
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ha->pscratch = pci_alloc_consistent(ha->pdev, GDTH_SCRATCH,
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&scratch_dma_handle);
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if (!ha->pscratch)
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goto out_free_irq;
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ha->scratch_phys = scratch_dma_handle;
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ha->pmsg = pci_alloc_consistent(ha->pdev, sizeof(gdth_msg_str),
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&scratch_dma_handle);
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if (!ha->pmsg)
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goto out_free_pscratch;
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ha->msg_phys = scratch_dma_handle;
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#ifdef INT_COAL
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ha->coal_stat = pci_alloc_consistent(ha->pdev,
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sizeof(gdth_coal_status) * MAXOFFSETS,
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&scratch_dma_handle);
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if (!ha->coal_stat)
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goto out_free_pmsg;
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ha->coal_stat_phys = scratch_dma_handle;
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#endif
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ha->ccb_phys = pci_map_single(ha->pdev,ha->pccb,
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sizeof(gdth_cmd_str), PCI_DMA_BIDIRECTIONAL);
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if (!ha->ccb_phys)
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goto out_free_coal_stat;
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ha->scratch_busy = FALSE;
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ha->req_first = NULL;
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ha->tid_cnt = MAX_HDRIVES;
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if (max_ids > 0 && max_ids < ha->tid_cnt)
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ha->tid_cnt = max_ids;
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for (i = 0; i < GDTH_MAXCMDS; ++i)
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ha->cmd_tab[i].cmnd = UNUSED_CMND;
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ha->scan_mode = rescan ? 0x10 : 0;
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if (!gdth_search_drives(hanum)) {
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printk("GDT-EISA: Error during device scan\n");
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error = -ENODEV;
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goto out_free_ccb_phys;
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}
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if (hdr_channel < 0 || hdr_channel > ha->bus_cnt)
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hdr_channel = ha->bus_cnt;
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ha->virt_bus = hdr_channel;
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if (ha->cache_feat & ha->raw_feat & ha->screen_feat & GDT_64BIT)
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shp->max_cmd_len = 16;
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shp->max_id = ha->tid_cnt;
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shp->max_lun = MAXLUN;
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shp->max_channel = virt_ctr ? 0 : ha->bus_cnt;
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if (virt_ctr) {
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virt_ctr = 1;
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/* register addit. SCSI channels as virtual controllers */
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for (b = 1; b < ha->bus_cnt + 1; ++b) {
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shp = scsi_register(shtp,sizeof(gdth_num_str));
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shp->unchecked_isa_dma = 0;
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shp->irq = ha->irq;
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shp->dma_channel = 0xff;
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gdth_ctr_vtab[gdth_ctr_vcount++] = shp;
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NUMDATA(shp)->hanum = (ushort)hanum;
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NUMDATA(shp)->busnum = b;
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}
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}
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spin_lock_init(&ha->smp_lock);
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gdth_enable_int(hanum);
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return 0;
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out_free_ccb_phys:
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pci_unmap_single(ha->pdev,ha->ccb_phys, sizeof(gdth_cmd_str),
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PCI_DMA_BIDIRECTIONAL);
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out_free_coal_stat:
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#ifdef INT_COAL
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pci_free_consistent(ha->pdev, sizeof(gdth_coal_status) * MAXOFFSETS,
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ha->coal_stat, ha->coal_stat_phys);
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out_free_pmsg:
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#endif
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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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out_free_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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out_free_irq:
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free_irq(ha->irq, ha);
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gdth_ctr_count--;
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gdth_ctr_vcount--;
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out_host_put:
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scsi_unregister(shp);
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return error;
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}
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#endif /* CONFIG_EISA */
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#include "scsi_module.c"
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#ifndef MODULE
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