| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Linus Torvalds (pre-git) | 1553 | 62.85% | 24 | 29.63% |
| David S. Miller | 713 | 28.85% | 35 | 43.21% |
| Linus Torvalds | 88 | 3.56% | 8 | 9.88% |
| Benjamin Collins | 52 | 2.10% | 1 | 1.23% |
| Grant C. Likely | 33 | 1.34% | 6 | 7.41% |
| Rob Herring | 16 | 0.65% | 2 | 2.47% |
| Maximilian Attems | 8 | 0.32% | 1 | 1.23% |
| Paul Gortmaker | 3 | 0.12% | 1 | 1.23% |
| Eric Sesterhenn / Snakebyte | 2 | 0.08% | 1 | 1.23% |
| Stephen Rothwell | 2 | 0.08% | 1 | 1.23% |
| Greg Kroah-Hartman | 1 | 0.04% | 1 | 1.23% |
| Total | 2471 | 81 |
// SPDX-License-Identifier: GPL-2.0 /* pci_sabre.c: Sabre specific PCI controller support. * * Copyright (C) 1997, 1998, 1999, 2007 David S. Miller (davem@davemloft.net) * Copyright (C) 1998, 1999 Eddie C. Dost (ecd@skynet.be) * Copyright (C) 1999 Jakub Jelinek (jakub@redhat.com) */ #include <linux/kernel.h> #include <linux/types.h> #include <linux/pci.h> #include <linux/init.h> #include <linux/export.h> #include <linux/slab.h> #include <linux/interrupt.h> #include <linux/of.h> #include <linux/of_platform.h> #include <linux/platform_device.h> #include <linux/property.h> #include <asm/apb.h> #include <asm/iommu.h> #include <asm/irq.h> #include <asm/prom.h> #include <asm/upa.h> #include "pci_impl.h" #include "iommu_common.h" #include "psycho_common.h" #define DRIVER_NAME "sabre" #define PFX DRIVER_NAME ": " /* SABRE PCI controller register offsets and definitions. */ #define SABRE_UE_AFSR 0x0030UL #define SABRE_UEAFSR_PDRD 0x4000000000000000UL /* Primary PCI DMA Read */ #define SABRE_UEAFSR_PDWR 0x2000000000000000UL /* Primary PCI DMA Write */ #define SABRE_UEAFSR_SDRD 0x0800000000000000UL /* Secondary PCI DMA Read */ #define SABRE_UEAFSR_SDWR 0x0400000000000000UL /* Secondary PCI DMA Write */ #define SABRE_UEAFSR_SDTE 0x0200000000000000UL /* Secondary DMA Translation Error */ #define SABRE_UEAFSR_PDTE 0x0100000000000000UL /* Primary DMA Translation Error */ #define SABRE_UEAFSR_BMSK 0x0000ffff00000000UL /* Bytemask */ #define SABRE_UEAFSR_OFF 0x00000000e0000000UL /* Offset (AFAR bits [5:3] */ #define SABRE_UEAFSR_BLK 0x0000000000800000UL /* Was block operation */ #define SABRE_UECE_AFAR 0x0038UL #define SABRE_CE_AFSR 0x0040UL #define SABRE_CEAFSR_PDRD 0x4000000000000000UL /* Primary PCI DMA Read */ #define SABRE_CEAFSR_PDWR 0x2000000000000000UL /* Primary PCI DMA Write */ #define SABRE_CEAFSR_SDRD 0x0800000000000000UL /* Secondary PCI DMA Read */ #define SABRE_CEAFSR_SDWR 0x0400000000000000UL /* Secondary PCI DMA Write */ #define SABRE_CEAFSR_ESYND 0x00ff000000000000UL /* ECC Syndrome */ #define SABRE_CEAFSR_BMSK 0x0000ffff00000000UL /* Bytemask */ #define SABRE_CEAFSR_OFF 0x00000000e0000000UL /* Offset */ #define SABRE_CEAFSR_BLK 0x0000000000800000UL /* Was block operation */ #define SABRE_UECE_AFAR_ALIAS 0x0048UL /* Aliases to 0x0038 */ #define SABRE_IOMMU_CONTROL 0x0200UL #define SABRE_IOMMUCTRL_ERRSTS 0x0000000006000000UL /* Error status bits */ #define SABRE_IOMMUCTRL_ERR 0x0000000001000000UL /* Error present in IOTLB */ #define SABRE_IOMMUCTRL_LCKEN 0x0000000000800000UL /* IOTLB lock enable */ #define SABRE_IOMMUCTRL_LCKPTR 0x0000000000780000UL /* IOTLB lock pointer */ #define SABRE_IOMMUCTRL_TSBSZ 0x0000000000070000UL /* TSB Size */ #define SABRE_IOMMU_TSBSZ_1K 0x0000000000000000 #define SABRE_IOMMU_TSBSZ_2K 0x0000000000010000 #define SABRE_IOMMU_TSBSZ_4K 0x0000000000020000 #define SABRE_IOMMU_TSBSZ_8K 0x0000000000030000 #define SABRE_IOMMU_TSBSZ_16K 0x0000000000040000 #define SABRE_IOMMU_TSBSZ_32K 0x0000000000050000 #define SABRE_IOMMU_TSBSZ_64K 0x0000000000060000 #define SABRE_IOMMU_TSBSZ_128K 0x0000000000070000 #define SABRE_IOMMUCTRL_TBWSZ 0x0000000000000004UL /* TSB assumed page size */ #define SABRE_IOMMUCTRL_DENAB 0x0000000000000002UL /* Diagnostic Mode Enable */ #define SABRE_IOMMUCTRL_ENAB 0x0000000000000001UL /* IOMMU Enable */ #define SABRE_IOMMU_TSBBASE 0x0208UL #define SABRE_IOMMU_FLUSH 0x0210UL #define SABRE_IMAP_A_SLOT0 0x0c00UL #define SABRE_IMAP_B_SLOT0 0x0c20UL #define SABRE_IMAP_SCSI 0x1000UL #define SABRE_IMAP_ETH 0x1008UL #define SABRE_IMAP_BPP 0x1010UL #define SABRE_IMAP_AU_REC 0x1018UL #define SABRE_IMAP_AU_PLAY 0x1020UL #define SABRE_IMAP_PFAIL 0x1028UL #define SABRE_IMAP_KMS 0x1030UL #define SABRE_IMAP_FLPY 0x1038UL #define SABRE_IMAP_SHW 0x1040UL #define SABRE_IMAP_KBD 0x1048UL #define SABRE_IMAP_MS 0x1050UL #define SABRE_IMAP_SER 0x1058UL #define SABRE_IMAP_UE 0x1070UL #define SABRE_IMAP_CE 0x1078UL #define SABRE_IMAP_PCIERR 0x1080UL #define SABRE_IMAP_GFX 0x1098UL #define SABRE_IMAP_EUPA 0x10a0UL #define SABRE_ICLR_A_SLOT0 0x1400UL #define SABRE_ICLR_B_SLOT0 0x1480UL #define SABRE_ICLR_SCSI 0x1800UL #define SABRE_ICLR_ETH 0x1808UL #define SABRE_ICLR_BPP 0x1810UL #define SABRE_ICLR_AU_REC 0x1818UL #define SABRE_ICLR_AU_PLAY 0x1820UL #define SABRE_ICLR_PFAIL 0x1828UL #define SABRE_ICLR_KMS 0x1830UL #define SABRE_ICLR_FLPY 0x1838UL #define SABRE_ICLR_SHW 0x1840UL #define SABRE_ICLR_KBD 0x1848UL #define SABRE_ICLR_MS 0x1850UL #define SABRE_ICLR_SER 0x1858UL #define SABRE_ICLR_UE 0x1870UL #define SABRE_ICLR_CE 0x1878UL #define SABRE_ICLR_PCIERR 0x1880UL #define SABRE_WRSYNC 0x1c20UL #define SABRE_PCICTRL 0x2000UL #define SABRE_PCICTRL_MRLEN 0x0000001000000000UL /* Use MemoryReadLine for block loads/stores */ #define SABRE_PCICTRL_SERR 0x0000000400000000UL /* Set when SERR asserted on PCI bus */ #define SABRE_PCICTRL_ARBPARK 0x0000000000200000UL /* Bus Parking 0=Ultra-IIi 1=prev-bus-owner */ #define SABRE_PCICTRL_CPUPRIO 0x0000000000100000UL /* Ultra-IIi granted every other bus cycle */ #define SABRE_PCICTRL_ARBPRIO 0x00000000000f0000UL /* Slot which is granted every other bus cycle */ #define SABRE_PCICTRL_ERREN 0x0000000000000100UL /* PCI Error Interrupt Enable */ #define SABRE_PCICTRL_RTRYWE 0x0000000000000080UL /* DMA Flow Control 0=wait-if-possible 1=retry */ #define SABRE_PCICTRL_AEN 0x000000000000000fUL /* Slot PCI arbitration enables */ #define SABRE_PIOAFSR 0x2010UL #define SABRE_PIOAFSR_PMA 0x8000000000000000UL /* Primary Master Abort */ #define SABRE_PIOAFSR_PTA 0x4000000000000000UL /* Primary Target Abort */ #define SABRE_PIOAFSR_PRTRY 0x2000000000000000UL /* Primary Excessive Retries */ #define SABRE_PIOAFSR_PPERR 0x1000000000000000UL /* Primary Parity Error */ #define SABRE_PIOAFSR_SMA 0x0800000000000000UL /* Secondary Master Abort */ #define SABRE_PIOAFSR_STA 0x0400000000000000UL /* Secondary Target Abort */ #define SABRE_PIOAFSR_SRTRY 0x0200000000000000UL /* Secondary Excessive Retries */ #define SABRE_PIOAFSR_SPERR 0x0100000000000000UL /* Secondary Parity Error */ #define SABRE_PIOAFSR_BMSK 0x0000ffff00000000UL /* Byte Mask */ #define SABRE_PIOAFSR_BLK 0x0000000080000000UL /* Was Block Operation */ #define SABRE_PIOAFAR 0x2018UL #define SABRE_PCIDIAG 0x2020UL #define SABRE_PCIDIAG_DRTRY 0x0000000000000040UL /* Disable PIO Retry Limit */ #define SABRE_PCIDIAG_IPAPAR 0x0000000000000008UL /* Invert PIO Address Parity */ #define SABRE_PCIDIAG_IPDPAR 0x0000000000000004UL /* Invert PIO Data Parity */ #define SABRE_PCIDIAG_IDDPAR 0x0000000000000002UL /* Invert DMA Data Parity */ #define SABRE_PCIDIAG_ELPBK 0x0000000000000001UL /* Loopback Enable - not supported */ #define SABRE_PCITASR 0x2028UL #define SABRE_PCITASR_EF 0x0000000000000080UL /* Respond to 0xe0000000-0xffffffff */ #define SABRE_PCITASR_CD 0x0000000000000040UL /* Respond to 0xc0000000-0xdfffffff */ #define SABRE_PCITASR_AB 0x0000000000000020UL /* Respond to 0xa0000000-0xbfffffff */ #define SABRE_PCITASR_89 0x0000000000000010UL /* Respond to 0x80000000-0x9fffffff */ #define SABRE_PCITASR_67 0x0000000000000008UL /* Respond to 0x60000000-0x7fffffff */ #define SABRE_PCITASR_45 0x0000000000000004UL /* Respond to 0x40000000-0x5fffffff */ #define SABRE_PCITASR_23 0x0000000000000002UL /* Respond to 0x20000000-0x3fffffff */ #define SABRE_PCITASR_01 0x0000000000000001UL /* Respond to 0x00000000-0x1fffffff */ #define SABRE_PIOBUF_DIAG 0x5000UL #define SABRE_DMABUF_DIAGLO 0x5100UL #define SABRE_DMABUF_DIAGHI 0x51c0UL #define SABRE_IMAP_GFX_ALIAS 0x6000UL /* Aliases to 0x1098 */ #define SABRE_IMAP_EUPA_ALIAS 0x8000UL /* Aliases to 0x10a0 */ #define SABRE_IOMMU_VADIAG 0xa400UL #define SABRE_IOMMU_TCDIAG 0xa408UL #define SABRE_IOMMU_TAG 0xa580UL #define SABRE_IOMMUTAG_ERRSTS 0x0000000001800000UL /* Error status bits */ #define SABRE_IOMMUTAG_ERR 0x0000000000400000UL /* Error present */ #define SABRE_IOMMUTAG_WRITE 0x0000000000200000UL /* Page is writable */ #define SABRE_IOMMUTAG_STREAM 0x0000000000100000UL /* Streamable bit - unused */ #define SABRE_IOMMUTAG_SIZE 0x0000000000080000UL /* 0=8k 1=16k */ #define SABRE_IOMMUTAG_VPN 0x000000000007ffffUL /* Virtual Page Number [31:13] */ #define SABRE_IOMMU_DATA 0xa600UL #define SABRE_IOMMUDATA_VALID 0x0000000040000000UL /* Valid */ #define SABRE_IOMMUDATA_USED 0x0000000020000000UL /* Used (for LRU algorithm) */ #define SABRE_IOMMUDATA_CACHE 0x0000000010000000UL /* Cacheable */ #define SABRE_IOMMUDATA_PPN 0x00000000001fffffUL /* Physical Page Number [33:13] */ #define SABRE_PCI_IRQSTATE 0xa800UL #define SABRE_OBIO_IRQSTATE 0xa808UL #define SABRE_FFBCFG 0xf000UL #define SABRE_FFBCFG_SPRQS 0x000000000f000000 /* Slave P_RQST queue size */ #define SABRE_FFBCFG_ONEREAD 0x0000000000004000 /* Slave supports one outstanding read */ #define SABRE_MCCTRL0 0xf010UL #define SABRE_MCCTRL0_RENAB 0x0000000080000000 /* Refresh Enable */ #define SABRE_MCCTRL0_EENAB 0x0000000010000000 /* Enable all ECC functions */ #define SABRE_MCCTRL0_11BIT 0x0000000000001000 /* Enable 11-bit column addressing */ #define SABRE_MCCTRL0_DPP 0x0000000000000f00 /* DIMM Pair Present Bits */ #define SABRE_MCCTRL0_RINTVL 0x00000000000000ff /* Refresh Interval */ #define SABRE_MCCTRL1 0xf018UL #define SABRE_MCCTRL1_AMDC 0x0000000038000000 /* Advance Memdata Clock */ #define SABRE_MCCTRL1_ARDC 0x0000000007000000 /* Advance DRAM Read Data Clock */ #define SABRE_MCCTRL1_CSR 0x0000000000e00000 /* CAS to RAS delay for CBR refresh */ #define SABRE_MCCTRL1_CASRW 0x00000000001c0000 /* CAS length for read/write */ #define SABRE_MCCTRL1_RCD 0x0000000000038000 /* RAS to CAS delay */ #define SABRE_MCCTRL1_CP 0x0000000000007000 /* CAS Precharge */ #define SABRE_MCCTRL1_RP 0x0000000000000e00 /* RAS Precharge */ #define SABRE_MCCTRL1_RAS 0x00000000000001c0 /* Length of RAS for refresh */ #define SABRE_MCCTRL1_CASRW2 0x0000000000000038 /* Must be same as CASRW */ #define SABRE_MCCTRL1_RSC 0x0000000000000007 /* RAS after CAS hold time */ #define SABRE_RESETCTRL 0xf020UL #define SABRE_CONFIGSPACE 0x001000000UL #define SABRE_IOSPACE 0x002000000UL #define SABRE_IOSPACE_SIZE 0x000ffffffUL #define SABRE_MEMSPACE 0x100000000UL #define SABRE_MEMSPACE_SIZE 0x07fffffffUL static int hummingbird_p; static struct pci_bus *sabre_root_bus; static irqreturn_t sabre_ue_intr(int irq, void *dev_id) { 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; /* Latch uncorrectable error status. */ afar = upa_readq(afar_reg); afsr = upa_readq(afsr_reg); /* Clear the primary/secondary error status bits. */ error_bits = afsr & (SABRE_UEAFSR_PDRD | SABRE_UEAFSR_PDWR | SABRE_UEAFSR_SDRD | SABRE_UEAFSR_SDWR | SABRE_UEAFSR_SDTE | SABRE_UEAFSR_PDTE); if (!error_bits) return IRQ_NONE; upa_writeq(error_bits, afsr_reg); /* Log the error. */ 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("%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("%s: UE AFAR [%016lx]\n", pbm->name, afar); printk("%s: UE Secondary errors [", pbm->name); reported = 0; if (afsr & SABRE_UEAFSR_SDRD) { reported++; printk("(DMA Read)"); } if (afsr & SABRE_UEAFSR_SDWR) { reported++; printk("(DMA Write)"); } if (afsr & SABRE_UEAFSR_SDTE) { reported++; printk("(Translation Error)"); } if (!reported) printk("(none)"); printk("]\n"); /* Interrogate IOMMU for error status. */ psycho_check_iommu_error(pbm, afsr, afar, UE_ERR); return IRQ_HANDLED; } static irqreturn_t sabre_ce_intr(int irq, void *dev_id) { 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; /* Latch error status. */ afar = upa_readq(afar_reg); afsr = upa_readq(afsr_reg); /* Clear primary/secondary error status bits. */ error_bits = afsr & (SABRE_CEAFSR_PDRD | SABRE_CEAFSR_PDWR | SABRE_CEAFSR_SDRD | SABRE_CEAFSR_SDWR); if (!error_bits) return IRQ_NONE; upa_writeq(error_bits, afsr_reg); /* Log the error. */ printk("%s: Correctable Error, primary error type[%s]\n", pbm->name, ((error_bits & SABRE_CEAFSR_PDRD) ? "DMA Read" : ((error_bits & SABRE_CEAFSR_PDWR) ? "DMA Write" : "???"))); /* XXX Use syndrome and afar to print out module string just like * XXX UDB CE trap handler does... -DaveM */ printk("%s: syndrome[%02lx] bytemask[%04lx] dword_offset[%lx] " "was_block(%d)\n", pbm->name, (afsr & SABRE_CEAFSR_ESYND) >> 48UL, (afsr & SABRE_CEAFSR_BMSK) >> 32UL, (afsr & SABRE_CEAFSR_OFF) >> 29UL, ((afsr & SABRE_CEAFSR_BLK) ? 1 : 0)); printk("%s: CE AFAR [%016lx]\n", pbm->name, afar); printk("%s: CE Secondary errors [", pbm->name); reported = 0; if (afsr & SABRE_CEAFSR_SDRD) { reported++; printk("(DMA Read)"); } if (afsr & SABRE_CEAFSR_SDWR) { reported++; printk("(DMA Write)"); } if (!reported) printk("(none)"); printk("]\n"); return IRQ_HANDLED; } static void sabre_register_error_handlers(struct pci_pbm_info *pbm) { struct device_node *dp = pbm->op->dev.of_node; struct platform_device *op; unsigned long base = pbm->controller_regs; u64 tmp; int err; if (pbm->chip_type == PBM_CHIP_TYPE_SABRE) dp = dp->parent; op = of_find_device_by_node(dp); if (!op) return; /* Sabre/Hummingbird IRQ property layout is: * 0: PCI ERR * 1: UE ERR * 2: CE ERR * 3: POWER FAIL */ if (op->archdata.num_irqs < 4) return; /* We clear the error bits in the appropriate AFSR before * registering the handler so that we don't get spurious * interrupts. */ upa_writeq((SABRE_UEAFSR_PDRD | SABRE_UEAFSR_PDWR | SABRE_UEAFSR_SDRD | SABRE_UEAFSR_SDWR | SABRE_UEAFSR_SDTE | SABRE_UEAFSR_PDTE), base + SABRE_UE_AFSR); err = request_irq(op->archdata.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); upa_writeq((SABRE_CEAFSR_PDRD | SABRE_CEAFSR_PDWR | SABRE_CEAFSR_SDRD | SABRE_CEAFSR_SDWR), base + SABRE_CE_AFSR); err = request_irq(op->archdata.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->archdata.irqs[0], psycho_pcierr_intr, 0, "SABRE_PCIERR", pbm); if (err) printk(KERN_WARNING "%s: Couldn't register PCIERR, err=%d.\n", pbm->name, err); tmp = upa_readq(base + SABRE_PCICTRL); tmp |= SABRE_PCICTRL_ERREN; upa_writeq(tmp, base + SABRE_PCICTRL); } static void apb_init(struct pci_bus *sabre_bus) { struct pci_dev *pdev; list_for_each_entry(pdev, &sabre_bus->devices, bus_list) { if (pdev->vendor == PCI_VENDOR_ID_SUN && pdev->device == PCI_DEVICE_ID_SUN_SIMBA) { u16 word16; pci_read_config_word(pdev, PCI_COMMAND, &word16); word16 |= PCI_COMMAND_SERR | PCI_COMMAND_PARITY | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY | PCI_COMMAND_IO; pci_write_config_word(pdev, PCI_COMMAND, word16); /* Status register bits are "write 1 to clear". */ pci_write_config_word(pdev, PCI_STATUS, 0xffff); pci_write_config_word(pdev, PCI_SEC_STATUS, 0xffff); /* Use a primary/seconday latency timer value * of 64. */ pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 64); pci_write_config_byte(pdev, PCI_SEC_LATENCY_TIMER, 64); /* Enable reporting/forwarding of master aborts, * parity, and SERR. */ pci_write_config_byte(pdev, PCI_BRIDGE_CONTROL, (PCI_BRIDGE_CTL_PARITY | PCI_BRIDGE_CTL_SERR | PCI_BRIDGE_CTL_MASTER_ABORT)); } } } static void sabre_scan_bus(struct pci_pbm_info *pbm, struct device *parent) { static int once; /* The APB bridge speaks to the Sabre host PCI bridge * at 66Mhz, but the front side of APB runs at 33Mhz * for both segments. * * Hummingbird systems do not use APB, so they run * at 66MHZ. */ if (hummingbird_p) pbm->is_66mhz_capable = 1; else pbm->is_66mhz_capable = 0; /* This driver has not been verified to handle * multiple SABREs yet, so trap this. * * Also note that the SABRE host bridge is hardwired * to live at bus 0. */ if (once != 0) { printk(KERN_ERR PFX "Multiple controllers unsupported.\n"); return; } once++; pbm->pci_bus = pci_scan_one_pbm(pbm, parent); if (!pbm->pci_bus) return; sabre_root_bus = pbm->pci_bus; apb_init(pbm->pci_bus); sabre_register_error_handlers(pbm); } static void sabre_pbm_init(struct pci_pbm_info *pbm, struct platform_device *op) { psycho_pbm_init_common(pbm, op, "SABRE", PBM_CHIP_TYPE_SABRE); pbm->pci_afsr = pbm->controller_regs + SABRE_PIOAFSR; pbm->pci_afar = pbm->controller_regs + SABRE_PIOAFAR; pbm->pci_csr = pbm->controller_regs + SABRE_PCICTRL; sabre_scan_bus(pbm, &op->dev); } static const struct of_device_id sabre_match[]; static int sabre_probe(struct platform_device *op) { const struct linux_prom64_registers *pr_regs; struct device_node *dp = op->dev.of_node; struct pci_pbm_info *pbm; u32 upa_portid, dma_mask; struct iommu *iommu; int tsbsize, err; const u32 *vdma; u64 clear_irq; hummingbird_p = (uintptr_t)device_get_match_data(&op->dev); if (!hummingbird_p) { struct device_node *cpu_dp; /* Of course, Sun has to encode things a thousand * different ways, inconsistently. */ for_each_node_by_type(cpu_dp, "cpu") { if (of_node_name_eq(cpu_dp, "SUNW,UltraSPARC-IIe")) hummingbird_p = 1; } } err = -ENOMEM; pbm = kzalloc(sizeof(*pbm), GFP_KERNEL); if (!pbm) { printk(KERN_ERR PFX "Cannot allocate pci_pbm_info.\n"); goto out_err; } iommu = kzalloc(sizeof(*iommu), GFP_KERNEL); if (!iommu) { printk(KERN_ERR PFX "Cannot allocate PBM iommu.\n"); goto out_free_controller; } pbm->iommu = iommu; upa_portid = of_getintprop_default(dp, "upa-portid", 0xff); pbm->portid = upa_portid; /* * Map in SABRE register set and report the presence of this SABRE. */ pr_regs = of_get_property(dp, "reg", NULL); err = -ENODEV; if (!pr_regs) { printk(KERN_ERR PFX "No reg property\n"); goto out_free_iommu; } /* * First REG in property is base of entire SABRE register space. */ 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) upa_writeq(0x0UL, pbm->controller_regs + clear_irq); /* Then OBIO */ for (clear_irq = SABRE_ICLR_SCSI; clear_irq < SABRE_ICLR_SCSI + 0x80; clear_irq += 8) upa_writeq(0x0UL, pbm->controller_regs + clear_irq); /* Error interrupts are enabled later after the bus scan. */ upa_writeq((SABRE_PCICTRL_MRLEN | SABRE_PCICTRL_SERR | SABRE_PCICTRL_ARBPARK | SABRE_PCICTRL_AEN), pbm->controller_regs + SABRE_PCICTRL); /* Now map in PCI config space for entire SABRE. */ pbm->config_space = pbm->controller_regs + SABRE_CONFIGSPACE; vdma = of_get_property(dp, "virtual-dma", NULL); if (!vdma) { printk(KERN_ERR PFX "No virtual-dma property\n"); goto out_free_iommu; } dma_mask = vdma[0]; switch(vdma[1]) { case 0x20000000: dma_mask |= 0x1fffffff; tsbsize = 64; break; case 0x40000000: dma_mask |= 0x3fffffff; tsbsize = 128; break; case 0x80000000: dma_mask |= 0x7fffffff; tsbsize = 128; break; default: printk(KERN_ERR PFX "Strange virtual-dma size.\n"); goto out_free_iommu; } err = psycho_iommu_init(pbm, tsbsize, vdma[0], dma_mask, SABRE_WRSYNC); if (err) goto out_free_iommu; /* * Look for APB underneath. */ sabre_pbm_init(pbm, op); pbm->next = pci_pbm_root; pci_pbm_root = pbm; dev_set_drvdata(&op->dev, pbm); return 0; out_free_iommu: kfree(pbm->iommu); out_free_controller: kfree(pbm); out_err: return err; } static const struct of_device_id sabre_match[] = { { .name = "pci", .compatible = "pci108e,a001", .data = (void *) 1, }, { .name = "pci", .compatible = "pci108e,a000", }, {}, }; static struct platform_driver sabre_driver = { .driver = { .name = DRIVER_NAME, .of_match_table = sabre_match, }, .probe = sabre_probe, }; static int __init sabre_init(void) { return platform_driver_register(&sabre_driver); } subsys_initcall(sabre_init);
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