diff options
Diffstat (limited to 'arch/sparc64/kernel/pci_sabre.c')
| -rw-r--r-- | arch/sparc64/kernel/pci_sabre.c | 204 |
1 files changed, 104 insertions, 100 deletions
diff --git a/arch/sparc64/kernel/pci_sabre.c b/arch/sparc64/kernel/pci_sabre.c index 397862fbd9e..4cefe6e83b2 100644 --- a/arch/sparc64/kernel/pci_sabre.c +++ b/arch/sparc64/kernel/pci_sabre.c @@ -13,12 +13,12 @@ #include <linux/interrupt.h> #include <asm/apb.h> -#include <asm/pbm.h> #include <asm/iommu.h> #include <asm/irq.h> #include <asm/smp.h> #include <asm/oplib.h> #include <asm/prom.h> +#include <asm/of_device.h> #include "pci_impl.h" #include "iommu_common.h" @@ -494,11 +494,11 @@ static struct pci_ops sabre_ops = { }; /* SABRE error handling support. */ -static void sabre_check_iommu_error(struct pci_controller_info *p, +static void sabre_check_iommu_error(struct pci_pbm_info *pbm, unsigned long afsr, unsigned long afar) { - struct iommu *iommu = p->pbm_A.iommu; + struct iommu *iommu = pbm->iommu; unsigned long iommu_tag[16]; unsigned long iommu_data[16]; unsigned long flags; @@ -526,8 +526,8 @@ static void sabre_check_iommu_error(struct pci_controller_info *p, type_string = "Unknown"; break; }; - printk("SABRE%d: IOMMU Error, type[%s]\n", - p->index, type_string); + printk("%s: IOMMU Error, type[%s]\n", + pbm->name, type_string); /* Enter diagnostic mode and probe for error'd * entries in the IOTLB. @@ -536,7 +536,7 @@ static void sabre_check_iommu_error(struct pci_controller_info *p, sabre_write(iommu->iommu_control, (control | SABRE_IOMMUCTRL_DENAB)); for (i = 0; i < 16; i++) { - unsigned long base = p->pbm_A.controller_regs; + unsigned long base = pbm->controller_regs; iommu_tag[i] = sabre_read(base + SABRE_IOMMU_TAG + (i * 8UL)); @@ -566,13 +566,13 @@ static void sabre_check_iommu_error(struct pci_controller_info *p, type_string = "Unknown"; break; }; - printk("SABRE%d: IOMMU TAG(%d)[RAW(%016lx)error(%s)wr(%d)sz(%dK)vpg(%08lx)]\n", - p->index, i, tag, type_string, + printk("%s: IOMMU TAG(%d)[RAW(%016lx)error(%s)wr(%d)sz(%dK)vpg(%08lx)]\n", + pbm->name, i, tag, type_string, ((tag & SABRE_IOMMUTAG_WRITE) ? 1 : 0), ((tag & SABRE_IOMMUTAG_SIZE) ? 64 : 8), ((tag & SABRE_IOMMUTAG_VPN) << IOMMU_PAGE_SHIFT)); - printk("SABRE%d: IOMMU DATA(%d)[RAW(%016lx)valid(%d)used(%d)cache(%d)ppg(%016lx)\n", - p->index, i, data, + printk("%s: IOMMU DATA(%d)[RAW(%016lx)valid(%d)used(%d)cache(%d)ppg(%016lx)\n", + pbm->name, i, data, ((data & SABRE_IOMMUDATA_VALID) ? 1 : 0), ((data & SABRE_IOMMUDATA_USED) ? 1 : 0), ((data & SABRE_IOMMUDATA_CACHE) ? 1 : 0), @@ -584,9 +584,9 @@ static void sabre_check_iommu_error(struct pci_controller_info *p, static irqreturn_t sabre_ue_intr(int irq, void *dev_id) { - struct pci_controller_info *p = dev_id; - unsigned long afsr_reg = p->pbm_A.controller_regs + SABRE_UE_AFSR; - unsigned long afar_reg = p->pbm_A.controller_regs + SABRE_UECE_AFAR; + struct pci_pbm_info *pbm = dev_id; + unsigned long afsr_reg = pbm->controller_regs + SABRE_UE_AFSR; + unsigned long afar_reg = pbm->controller_regs + SABRE_UECE_AFAR; unsigned long afsr, afar, error_bits; int reported; @@ -604,21 +604,21 @@ static irqreturn_t sabre_ue_intr(int irq, void *dev_id) sabre_write(afsr_reg, error_bits); /* Log the error. */ - printk("SABRE%d: Uncorrectable Error, primary error type[%s%s]\n", - p->index, + printk("%s: Uncorrectable Error, primary error type[%s%s]\n", + pbm->name, ((error_bits & SABRE_UEAFSR_PDRD) ? "DMA Read" : ((error_bits & SABRE_UEAFSR_PDWR) ? "DMA Write" : "???")), ((error_bits & SABRE_UEAFSR_PDTE) ? ":Translation Error" : "")); - printk("SABRE%d: bytemask[%04lx] dword_offset[%lx] was_block(%d)\n", - p->index, + printk("%s: bytemask[%04lx] dword_offset[%lx] was_block(%d)\n", + pbm->name, (afsr & SABRE_UEAFSR_BMSK) >> 32UL, (afsr & SABRE_UEAFSR_OFF) >> 29UL, ((afsr & SABRE_UEAFSR_BLK) ? 1 : 0)); - printk("SABRE%d: UE AFAR [%016lx]\n", p->index, afar); - printk("SABRE%d: UE Secondary errors [", p->index); + printk("%s: UE AFAR [%016lx]\n", pbm->name, afar); + printk("%s: UE Secondary errors [", pbm->name); reported = 0; if (afsr & SABRE_UEAFSR_SDRD) { reported++; @@ -637,16 +637,16 @@ static irqreturn_t sabre_ue_intr(int irq, void *dev_id) printk("]\n"); /* Interrogate IOMMU for error status. */ - sabre_check_iommu_error(p, afsr, afar); + sabre_check_iommu_error(pbm, afsr, afar); return IRQ_HANDLED; } static irqreturn_t sabre_ce_intr(int irq, void *dev_id) { - struct pci_controller_info *p = dev_id; - unsigned long afsr_reg = p->pbm_A.controller_regs + SABRE_CE_AFSR; - unsigned long afar_reg = p->pbm_A.controller_regs + SABRE_UECE_AFAR; + struct pci_pbm_info *pbm = dev_id; + unsigned long afsr_reg = pbm->controller_regs + SABRE_CE_AFSR; + unsigned long afar_reg = pbm->controller_regs + SABRE_UECE_AFAR; unsigned long afsr, afar, error_bits; int reported; @@ -663,8 +663,8 @@ static irqreturn_t sabre_ce_intr(int irq, void *dev_id) sabre_write(afsr_reg, error_bits); /* Log the error. */ - printk("SABRE%d: Correctable Error, primary error type[%s]\n", - p->index, + printk("%s: Correctable Error, primary error type[%s]\n", + pbm->name, ((error_bits & SABRE_CEAFSR_PDRD) ? "DMA Read" : ((error_bits & SABRE_CEAFSR_PDWR) ? @@ -673,15 +673,15 @@ static irqreturn_t sabre_ce_intr(int irq, void *dev_id) /* XXX Use syndrome and afar to print out module string just like * XXX UDB CE trap handler does... -DaveM */ - printk("SABRE%d: syndrome[%02lx] bytemask[%04lx] dword_offset[%lx] " + printk("%s: syndrome[%02lx] bytemask[%04lx] dword_offset[%lx] " "was_block(%d)\n", - p->index, + pbm->name, (afsr & SABRE_CEAFSR_ESYND) >> 48UL, (afsr & SABRE_CEAFSR_BMSK) >> 32UL, (afsr & SABRE_CEAFSR_OFF) >> 29UL, ((afsr & SABRE_CEAFSR_BLK) ? 1 : 0)); - printk("SABRE%d: CE AFAR [%016lx]\n", p->index, afar); - printk("SABRE%d: CE Secondary errors [", p->index); + printk("%s: CE AFAR [%016lx]\n", pbm->name, afar); + printk("%s: CE Secondary errors [", pbm->name); reported = 0; if (afsr & SABRE_CEAFSR_SDRD) { reported++; @@ -698,13 +698,13 @@ static irqreturn_t sabre_ce_intr(int irq, void *dev_id) return IRQ_HANDLED; } -static irqreturn_t sabre_pcierr_intr_other(struct pci_controller_info *p) +static irqreturn_t sabre_pcierr_intr_other(struct pci_pbm_info *pbm) { unsigned long csr_reg, csr, csr_error_bits; irqreturn_t ret = IRQ_NONE; u16 stat; - csr_reg = p->pbm_A.controller_regs + SABRE_PCICTRL; + csr_reg = pbm->controller_regs + SABRE_PCICTRL; csr = sabre_read(csr_reg); csr_error_bits = csr & SABRE_PCICTRL_SERR; @@ -714,8 +714,8 @@ static irqreturn_t sabre_pcierr_intr_other(struct pci_controller_info *p) /* Log 'em. */ if (csr_error_bits & SABRE_PCICTRL_SERR) - printk("SABRE%d: PCI SERR signal asserted.\n", - p->index); + printk("%s: PCI SERR signal asserted.\n", + pbm->name); ret = IRQ_HANDLED; } pci_bus_read_config_word(sabre_root_bus, 0, @@ -725,8 +725,8 @@ static irqreturn_t sabre_pcierr_intr_other(struct pci_controller_info *p) PCI_STATUS_REC_TARGET_ABORT | PCI_STATUS_REC_MASTER_ABORT | PCI_STATUS_SIG_SYSTEM_ERROR)) { - printk("SABRE%d: PCI bus error, PCI_STATUS[%04x]\n", - p->index, stat); + printk("%s: PCI bus error, PCI_STATUS[%04x]\n", + pbm->name, stat); pci_bus_write_config_word(sabre_root_bus, 0, PCI_STATUS, 0xffff); ret = IRQ_HANDLED; @@ -736,13 +736,13 @@ static irqreturn_t sabre_pcierr_intr_other(struct pci_controller_info *p) static irqreturn_t sabre_pcierr_intr(int irq, void *dev_id) { - struct pci_controller_info *p = dev_id; + struct pci_pbm_info *pbm = dev_id; unsigned long afsr_reg, afar_reg; unsigned long afsr, afar, error_bits; int reported; - afsr_reg = p->pbm_A.controller_regs + SABRE_PIOAFSR; - afar_reg = p->pbm_A.controller_regs + SABRE_PIOAFAR; + afsr_reg = pbm->controller_regs + SABRE_PIOAFSR; + afar_reg = pbm->controller_regs + SABRE_PIOAFAR; /* Latch error status. */ afar = sabre_read(afar_reg); @@ -755,12 +755,12 @@ static irqreturn_t sabre_pcierr_intr(int irq, void *dev_id) SABRE_PIOAFSR_SMA | SABRE_PIOAFSR_STA | SABRE_PIOAFSR_SRTRY | SABRE_PIOAFSR_SPERR); if (!error_bits) - return sabre_pcierr_intr_other(p); + return sabre_pcierr_intr_other(pbm); sabre_write(afsr_reg, error_bits); /* Log the error. */ - printk("SABRE%d: PCI Error, primary error type[%s]\n", - p->index, + printk("%s: PCI Error, primary error type[%s]\n", + pbm->name, (((error_bits & SABRE_PIOAFSR_PMA) ? "Master Abort" : ((error_bits & SABRE_PIOAFSR_PTA) ? @@ -769,12 +769,12 @@ static irqreturn_t sabre_pcierr_intr(int irq, void *dev_id) "Excessive Retries" : ((error_bits & SABRE_PIOAFSR_PPERR) ? "Parity Error" : "???")))))); - printk("SABRE%d: bytemask[%04lx] was_block(%d)\n", - p->index, + printk("%s: bytemask[%04lx] was_block(%d)\n", + pbm->name, (afsr & SABRE_PIOAFSR_BMSK) >> 32UL, (afsr & SABRE_PIOAFSR_BLK) ? 1 : 0); - printk("SABRE%d: PCI AFAR [%016lx]\n", p->index, afar); - printk("SABRE%d: PCI Secondary errors [", p->index); + printk("%s: PCI AFAR [%016lx]\n", pbm->name, afar); + printk("%s: PCI Secondary errors [", pbm->name); reported = 0; if (afsr & SABRE_PIOAFSR_SMA) { reported++; @@ -806,11 +806,11 @@ static irqreturn_t sabre_pcierr_intr(int irq, void *dev_id) * a bug in the IOMMU support code or a PCI device driver. */ if (error_bits & (SABRE_PIOAFSR_PTA | SABRE_PIOAFSR_STA)) { - sabre_check_iommu_error(p, afsr, afar); - pci_scan_for_target_abort(p, &p->pbm_A, p->pbm_A.pci_bus); + sabre_check_iommu_error(pbm, afsr, afar); + pci_scan_for_target_abort(pbm, pbm->pci_bus); } if (error_bits & (SABRE_PIOAFSR_PMA | SABRE_PIOAFSR_SMA)) - pci_scan_for_master_abort(p, &p->pbm_A, p->pbm_A.pci_bus); + pci_scan_for_master_abort(pbm, pbm->pci_bus); /* For excessive retries, SABRE/PBM will abort the device * and there is no way to specifically check for excessive @@ -820,18 +820,18 @@ static irqreturn_t sabre_pcierr_intr(int irq, void *dev_id) */ if (error_bits & (SABRE_PIOAFSR_PPERR | SABRE_PIOAFSR_SPERR)) - pci_scan_for_parity_error(p, &p->pbm_A, p->pbm_A.pci_bus); + pci_scan_for_parity_error(pbm, pbm->pci_bus); return IRQ_HANDLED; } -static void sabre_register_error_handlers(struct pci_controller_info *p) +static void sabre_register_error_handlers(struct pci_pbm_info *pbm) { - struct pci_pbm_info *pbm = &p->pbm_A; /* arbitrary */ struct device_node *dp = pbm->prom_node; struct of_device *op; unsigned long base = pbm->controller_regs; u64 tmp; + int err; if (pbm->chip_type == PBM_CHIP_TYPE_SABRE) dp = dp->parent; @@ -858,22 +858,31 @@ static void sabre_register_error_handlers(struct pci_controller_info *p) SABRE_UEAFSR_SDRD | SABRE_UEAFSR_SDWR | SABRE_UEAFSR_SDTE | SABRE_UEAFSR_PDTE)); - request_irq(op->irqs[1], sabre_ue_intr, IRQF_SHARED, "SABRE UE", p); + err = request_irq(op->irqs[1], sabre_ue_intr, 0, "SABRE_UE", pbm); + if (err) + printk(KERN_WARNING "%s: Couldn't register UE, err=%d.\n", + pbm->name, err); sabre_write(base + SABRE_CE_AFSR, (SABRE_CEAFSR_PDRD | SABRE_CEAFSR_PDWR | SABRE_CEAFSR_SDRD | SABRE_CEAFSR_SDWR)); - request_irq(op->irqs[2], sabre_ce_intr, IRQF_SHARED, "SABRE CE", p); - request_irq(op->irqs[0], sabre_pcierr_intr, IRQF_SHARED, - "SABRE PCIERR", p); + err = request_irq(op->irqs[2], sabre_ce_intr, 0, "SABRE_CE", pbm); + if (err) + printk(KERN_WARNING "%s: Couldn't register CE, err=%d.\n", + pbm->name, err); + err = request_irq(op->irqs[0], sabre_pcierr_intr, 0, + "SABRE_PCIERR", pbm); + if (err) + printk(KERN_WARNING "%s: Couldn't register PCIERR, err=%d.\n", + pbm->name, err); tmp = sabre_read(base + SABRE_PCICTRL); tmp |= SABRE_PCICTRL_ERREN; sabre_write(base + SABRE_PCICTRL, tmp); } -static void apb_init(struct pci_controller_info *p, struct pci_bus *sabre_bus) +static void apb_init(struct pci_bus *sabre_bus) { struct pci_dev *pdev; @@ -909,7 +918,7 @@ static void apb_init(struct pci_controller_info *p, struct pci_bus *sabre_bus) } } -static void sabre_scan_bus(struct pci_controller_info *p) +static void sabre_scan_bus(struct pci_pbm_info *pbm) { static int once; struct pci_bus *pbus; @@ -918,7 +927,7 @@ static void sabre_scan_bus(struct pci_controller_info *p) * at 66Mhz, but the front side of APB runs at 33Mhz * for both segments. */ - p->pbm_A.is_66mhz_capable = 0; + pbm->is_66mhz_capable = 0; /* This driver has not been verified to handle * multiple SABREs yet, so trap this. @@ -932,41 +941,41 @@ static void sabre_scan_bus(struct pci_controller_info *p) } once++; - pbus = pci_scan_one_pbm(&p->pbm_A); + pbus = pci_scan_one_pbm(pbm); if (!pbus) return; sabre_root_bus = pbus; - apb_init(p, pbus); + apb_init(pbus); - sabre_register_error_handlers(p); + sabre_register_error_handlers(pbm); } -static void sabre_iommu_init(struct pci_controller_info *p, +static void sabre_iommu_init(struct pci_pbm_info *pbm, int tsbsize, unsigned long dvma_offset, u32 dma_mask) { - struct iommu *iommu = p->pbm_A.iommu; + struct iommu *iommu = pbm->iommu; unsigned long i; u64 control; /* Register addresses. */ - iommu->iommu_control = p->pbm_A.controller_regs + SABRE_IOMMU_CONTROL; - iommu->iommu_tsbbase = p->pbm_A.controller_regs + SABRE_IOMMU_TSBBASE; - iommu->iommu_flush = p->pbm_A.controller_regs + SABRE_IOMMU_FLUSH; - iommu->write_complete_reg = p->pbm_A.controller_regs + SABRE_WRSYNC; + iommu->iommu_control = pbm->controller_regs + SABRE_IOMMU_CONTROL; + iommu->iommu_tsbbase = pbm->controller_regs + SABRE_IOMMU_TSBBASE; + iommu->iommu_flush = pbm->controller_regs + SABRE_IOMMU_FLUSH; + iommu->write_complete_reg = pbm->controller_regs + SABRE_WRSYNC; /* Sabre's IOMMU lacks ctx flushing. */ iommu->iommu_ctxflush = 0; /* Invalidate TLB Entries. */ - control = sabre_read(p->pbm_A.controller_regs + SABRE_IOMMU_CONTROL); + control = sabre_read(pbm->controller_regs + SABRE_IOMMU_CONTROL); control |= SABRE_IOMMUCTRL_DENAB; - sabre_write(p->pbm_A.controller_regs + SABRE_IOMMU_CONTROL, control); + sabre_write(pbm->controller_regs + SABRE_IOMMU_CONTROL, control); for(i = 0; i < 16; i++) { - sabre_write(p->pbm_A.controller_regs + SABRE_IOMMU_TAG + (i * 8UL), 0); - sabre_write(p->pbm_A.controller_regs + SABRE_IOMMU_DATA + (i * 8UL), 0); + sabre_write(pbm->controller_regs + SABRE_IOMMU_TAG + (i * 8UL), 0); + sabre_write(pbm->controller_regs + SABRE_IOMMU_DATA + (i * 8UL), 0); } /* Leave diag mode enabled for full-flushing done @@ -974,10 +983,10 @@ static void sabre_iommu_init(struct pci_controller_info *p, */ pci_iommu_table_init(iommu, tsbsize * 1024 * 8, dvma_offset, dma_mask); - sabre_write(p->pbm_A.controller_regs + SABRE_IOMMU_TSBBASE, + sabre_write(pbm->controller_regs + SABRE_IOMMU_TSBBASE, __pa(iommu->page_table)); - control = sabre_read(p->pbm_A.controller_regs + SABRE_IOMMU_CONTROL); + control = sabre_read(pbm->controller_regs + SABRE_IOMMU_CONTROL); control &= ~(SABRE_IOMMUCTRL_TSBSZ | SABRE_IOMMUCTRL_TBWSZ); control |= SABRE_IOMMUCTRL_ENAB; switch(tsbsize) { @@ -992,22 +1001,23 @@ static void sabre_iommu_init(struct pci_controller_info *p, prom_halt(); break; } - sabre_write(p->pbm_A.controller_regs + SABRE_IOMMU_CONTROL, control); + sabre_write(pbm->controller_regs + SABRE_IOMMU_CONTROL, control); } -static void sabre_pbm_init(struct pci_controller_info *p, struct device_node *dp) +static void sabre_pbm_init(struct pci_controller_info *p, struct pci_pbm_info *pbm, struct device_node *dp) { - struct pci_pbm_info *pbm; - - pbm = &p->pbm_A; pbm->name = dp->full_name; printk("%s: SABRE PCI Bus Module\n", pbm->name); + pbm->scan_bus = sabre_scan_bus; + pbm->pci_ops = &sabre_ops; + + pbm->index = pci_num_pbms++; + pbm->chip_type = PBM_CHIP_TYPE_SABRE; pbm->parent = p; pbm->prom_node = dp; - pbm->pci_first_busno = p->pci_first_busno; - pbm->pci_last_busno = p->pci_last_busno; + pci_get_pbm_props(pbm); pci_determine_mem_io_space(pbm); } @@ -1016,9 +1026,9 @@ void sabre_init(struct device_node *dp, char *model_name) { const struct linux_prom64_registers *pr_regs; struct pci_controller_info *p; + struct pci_pbm_info *pbm; struct iommu *iommu; int tsbsize; - const u32 *busrange; const u32 *vdma; u32 upa_portid, dma_mask; u64 clear_irq; @@ -1053,17 +1063,15 @@ void sabre_init(struct device_node *dp, char *model_name) prom_printf("SABRE: Error, kmalloc(pci_iommu) failed.\n"); prom_halt(); } - p->pbm_A.iommu = iommu; + pbm = &p->pbm_A; + pbm->iommu = iommu; upa_portid = of_getintprop_default(dp, "upa-portid", 0xff); - p->next = pci_controller_root; - pci_controller_root = p; + pbm->next = pci_pbm_root; + pci_pbm_root = pbm; - p->pbm_A.portid = upa_portid; - p->index = pci_num_controllers++; - p->scan_bus = sabre_scan_bus; - p->pci_ops = &sabre_ops; + pbm->portid = upa_portid; /* * Map in SABRE register set and report the presence of this SABRE. @@ -1074,26 +1082,26 @@ void sabre_init(struct device_node *dp, char *model_name) /* * First REG in property is base of entire SABRE register space. */ - p->pbm_A.controller_regs = pr_regs[0].phys_addr; + pbm->controller_regs = pr_regs[0].phys_addr; /* Clear interrupts */ /* PCI first */ for (clear_irq = SABRE_ICLR_A_SLOT0; clear_irq < SABRE_ICLR_B_SLOT0 + 0x80; clear_irq += 8) - sabre_write(p->pbm_A.controller_regs + clear_irq, 0x0UL); + sabre_write(pbm->controller_regs + clear_irq, 0x0UL); /* Then OBIO */ for (clear_irq = SABRE_ICLR_SCSI; clear_irq < SABRE_ICLR_SCSI + 0x80; clear_irq += 8) - sabre_write(p->pbm_A.controller_regs + clear_irq, 0x0UL); + sabre_write(pbm->controller_regs + clear_irq, 0x0UL); /* Error interrupts are enabled later after the bus scan. */ - sabre_write(p->pbm_A.controller_regs + SABRE_PCICTRL, + sabre_write(pbm->controller_regs + SABRE_PCICTRL, (SABRE_PCICTRL_MRLEN | SABRE_PCICTRL_SERR | SABRE_PCICTRL_ARBPARK | SABRE_PCICTRL_AEN)); /* Now map in PCI config space for entire SABRE. */ - p->pbm_A.config_space = - (p->pbm_A.controller_regs + SABRE_CONFIGSPACE); + pbm->config_space = + (pbm->controller_regs + SABRE_CONFIGSPACE); vdma = of_get_property(dp, "virtual-dma", NULL); @@ -1117,14 +1125,10 @@ void sabre_init(struct device_node *dp, char *model_name) prom_halt(); } - sabre_iommu_init(p, tsbsize, vdma[0], dma_mask); - - busrange = of_get_property(dp, "bus-range", NULL); - p->pci_first_busno = busrange[0]; - p->pci_last_busno = busrange[1]; + sabre_iommu_init(pbm, tsbsize, vdma[0], dma_mask); /* * Look for APB underneath. */ - sabre_pbm_init(p, dp); + sabre_pbm_init(p, pbm, dp); } |