mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-25 00:50:54 +07:00
[SCSI] gdth: split out isa probing
(note: this is ontop of Jeff's pci cleanup patch) Split out isa probing into a helper of it's own. Error handling is cleaned up, but errors are not propagated yet. Also enclose the isa probe under the proper CONFIG_ISA symbol instead of the !IA64 hack. 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
b8bff2aeaf
commit
aed91cb520
@ -445,13 +445,11 @@ 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_isa(ulong32 bios_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_isa(ulong32 bios_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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@ -476,6 +474,9 @@ static void gdth_flush(int hanum);
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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 DEBUG_GDTH
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static unchar DebugState = DEBUG_GDTH;
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@ -584,7 +585,10 @@ static struct timer_list gdth_timer;
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#define gdth_writew(b,addr) writew((b),(addr))
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#define gdth_writel(b,addr) writel((b),(addr))
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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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static unchar gdth_irq_tab[6] = {0,10,11,12,14,0}; /* IRQ table */
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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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@ -838,7 +842,7 @@ static int __init gdth_search_eisa(ushort eisa_adr)
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return 0;
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}
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#ifdef CONFIG_ISA
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static int __init gdth_search_isa(ulong32 bios_adr)
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{
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void __iomem *addr;
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@ -853,7 +857,7 @@ static int __init gdth_search_isa(ulong32 bios_adr)
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}
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return 0;
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}
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#endif /* CONFIG_ISA */
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static int __init gdth_search_pci(gdth_pci_str *pcistr)
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{
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@ -1064,7 +1068,7 @@ static int __init gdth_init_eisa(ushort eisa_adr,gdth_ha_str *ha)
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return 1;
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}
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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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{
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register gdt2_dpram_str __iomem *dp2_ptr;
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@ -1163,7 +1167,7 @@ static int __init gdth_init_isa(ulong32 bios_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_ISA */
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static int __init gdth_init_pci(gdth_pci_str *pcistr,gdth_ha_str *ha)
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{
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@ -4282,6 +4286,7 @@ int __init option_setup(char *str)
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return 1;
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}
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#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
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static int __init gdth_detect(struct scsi_host_template *shtp)
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#else
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@ -4291,7 +4296,6 @@ 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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ulong32 isa_bios;
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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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@ -4328,135 +4332,16 @@ static int __init gdth_detect(Scsi_Host_Template *shtp)
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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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for (isa_bios=0xc8000UL; isa_bios<=0xd8000UL; isa_bios+=0x8000UL) {
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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_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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if (gdth_search_isa(isa_bios)) { /* 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_isa(isa_bios,ha)) {
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scsi_unregister(shp);
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continue;
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}
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#ifdef __ia64__
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break;
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#else
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/* controller found and initialized */
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printk("Configuring GDT-ISA HA at BIOS 0x%05X IRQ %u DRQ %u\n",
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isa_bios,ha->irq,ha->drq);
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if (request_irq(ha->irq,gdth_interrupt,IRQF_DISABLED,"gdth",ha)) {
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printk("GDT-ISA: 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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if (request_dma(ha->drq,"gdth")) {
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printk("GDT-ISA: Unable to allocate DMA channel\n");
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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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set_dma_mode(ha->drq,DMA_MODE_CASCADE);
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enable_dma(ha->drq);
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shp->unchecked_isa_dma = 1;
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shp->irq = ha->irq;
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shp->dma_channel = ha->drq;
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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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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->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-ISA: 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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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 = 1;
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shp->irq = ha->irq;
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shp->dma_channel = ha->drq;
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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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#endif /* !__ia64__ */
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}
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gdth_isa_probe_one(shtp, isa_bios);
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}
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#endif
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/* scanning for EISA controllers */
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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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@ -4754,7 +4639,7 @@ static int gdth_release(struct Scsi_Host *shp)
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if (shp->irq) {
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free_irq(shp->irq,ha);
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}
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#ifndef __ia64__
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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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@ -5674,6 +5559,149 @@ static Scsi_Host_Template driver_template = {
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#endif
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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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{
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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_isa(isa_bios))
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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_isa(isa_bios,ha))
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goto out_host_put;
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/* controller found and initialized */
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printk("Configuring GDT-ISA HA at BIOS 0x%05X IRQ %u DRQ %u\n",
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isa_bios, ha->irq, ha->drq);
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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-ISA: Unable to allocate IRQ\n");
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goto out_host_put;
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}
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error = request_dma(ha->drq, "gdth");
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if (error) {
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printk("GDT-ISA: Unable to allocate DMA channel\n");
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goto out_free_irq;
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}
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set_dma_mode(ha->drq,DMA_MODE_CASCADE);
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enable_dma(ha->drq);
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shp->unchecked_isa_dma = 1;
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shp->irq = ha->irq;
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shp->dma_channel = ha->drq;
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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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ha->pccb = CMDDATA(shp);
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ha->ccb_phys = 0L;
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ha->pdev = NULL;
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error = -ENOMEM;
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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_dec_counters;
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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->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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error = -ENODEV;
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if (!gdth_search_drives(hanum)) {
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printk("GDT-ISA: Error during device scan\n");
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goto out_free_coal_stat;
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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 = 1;
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shp->irq = ha->irq;
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shp->dma_channel = ha->drq;
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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_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_dec_counters:
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gdth_ctr_count--;
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gdth_ctr_vcount--;
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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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return error;
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}
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#endif /* CONFIG_ISA */
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#include "scsi_module.c"
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#ifndef MODULE
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__setup("gdth=", option_setup);
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