pci_sabre.c
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- /* $Id: pci_sabre.c,v 1.41.2.1 2002/03/03 10:31:56 davem Exp $
- * pci_sabre.c: Sabre specific PCI controller support.
- *
- * Copyright (C) 1997, 1998, 1999 David S. Miller (davem@caipfs.rutgers.edu)
- * 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/slab.h>
- #include <asm/apb.h>
- #include <asm/pbm.h>
- #include <asm/iommu.h>
- #include <asm/irq.h>
- #include <asm/smp.h>
- #include "pci_impl.h"
- #include "iommu_common.h"
- /* All SABRE registers are 64-bits. The following accessor
- * routines are how they are accessed. The REG parameter
- * is a physical address.
- */
- #define sabre_read(__reg)
- ({ u64 __ret;
- __asm__ __volatile__("ldxa [%1] %2, %0"
- : "=r" (__ret)
- : "r" (__reg), "i" (ASI_PHYS_BYPASS_EC_E)
- : "memory");
- __ret;
- })
- #define sabre_write(__reg, __val)
- __asm__ __volatile__("stxa %0, [%1] %2"
- : /* no outputs */
- : "r" (__val), "r" (__reg),
- "i" (ASI_PHYS_BYPASS_EC_E)
- : "memory")
- /* 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
- /* UltraSparc-IIi Programmer's Manual, page 325, PCI
- * configuration space address format:
- *
- * 32 24 23 16 15 11 10 8 7 2 1 0
- * ---------------------------------------------------------
- * |0 0 0 0 0 0 0 0 1| bus | device | function | reg | 0 0 |
- * ---------------------------------------------------------
- */
- #define SABRE_CONFIG_BASE(PBM)
- ((PBM)->config_space | (1UL << 24))
- #define SABRE_CONFIG_ENCODE(BUS, DEVFN, REG)
- (((unsigned long)(BUS) << 16) |
- ((unsigned long)(DEVFN) << 8) |
- ((unsigned long)(REG)))
- static int hummingbird_p;
- static void *sabre_pci_config_mkaddr(struct pci_pbm_info *pbm,
- unsigned char bus,
- unsigned int devfn,
- int where)
- {
- if (!pbm)
- return NULL;
- return (void *)
- (SABRE_CONFIG_BASE(pbm) |
- SABRE_CONFIG_ENCODE(bus, devfn, where));
- }
- static int sabre_out_of_range(unsigned char devfn)
- {
- if (hummingbird_p)
- return 0;
- return (((PCI_SLOT(devfn) == 0) && (PCI_FUNC(devfn) > 0)) ||
- ((PCI_SLOT(devfn) == 1) && (PCI_FUNC(devfn) > 1)) ||
- (PCI_SLOT(devfn) > 1));
- }
- static int __sabre_out_of_range(struct pci_pbm_info *pbm,
- unsigned char bus,
- unsigned char devfn)
- {
- if (hummingbird_p)
- return 0;
- return ((pbm->parent == 0) ||
- ((pbm == &pbm->parent->pbm_B) &&
- (bus == pbm->pci_first_busno) &&
- PCI_SLOT(devfn) > 8) ||
- ((pbm == &pbm->parent->pbm_A) &&
- (bus == pbm->pci_first_busno) &&
- PCI_SLOT(devfn) > 8));
- }
- static int __sabre_read_byte(struct pci_dev *dev, int where, u8 *value)
- {
- struct pci_pbm_info *pbm = pci_bus2pbm[dev->bus->number];
- unsigned char bus = dev->bus->number;
- unsigned int devfn = dev->devfn;
- u8 *addr;
- *value = 0xff;
- addr = sabre_pci_config_mkaddr(pbm, bus, devfn, where);
- if (!addr)
- return PCIBIOS_SUCCESSFUL;
- if (__sabre_out_of_range(pbm, bus, devfn))
- return PCIBIOS_SUCCESSFUL;
- pci_config_read8(addr, value);
- return PCIBIOS_SUCCESSFUL;
- }
- static int __sabre_read_word(struct pci_dev *dev, int where, u16 *value)
- {
- struct pci_pbm_info *pbm = pci_bus2pbm[dev->bus->number];
- unsigned char bus = dev->bus->number;
- unsigned int devfn = dev->devfn;
- u16 *addr;
- *value = 0xffff;
- addr = sabre_pci_config_mkaddr(pbm, bus, devfn, where);
- if (!addr)
- return PCIBIOS_SUCCESSFUL;
- if (__sabre_out_of_range(pbm, bus, devfn))
- return PCIBIOS_SUCCESSFUL;
- if (where & 0x01) {
- printk("pcibios_read_config_word: misaligned reg [%x]n",
- where);
- return PCIBIOS_SUCCESSFUL;
- }
- pci_config_read16(addr, value);
- return PCIBIOS_SUCCESSFUL;
- }
- static int __sabre_read_dword(struct pci_dev *dev, int where, u32 *value)
- {
- struct pci_pbm_info *pbm = pci_bus2pbm[dev->bus->number];
- unsigned char bus = dev->bus->number;
- unsigned int devfn = dev->devfn;
- u32 *addr;
- *value = 0xffffffff;
- addr = sabre_pci_config_mkaddr(pbm, bus, devfn, where);
- if (!addr)
- return PCIBIOS_SUCCESSFUL;
- if (__sabre_out_of_range(pbm, bus, devfn))
- return PCIBIOS_SUCCESSFUL;
- if (where & 0x03) {
- printk("pcibios_read_config_dword: misaligned reg [%x]n",
- where);
- return PCIBIOS_SUCCESSFUL;
- }
- pci_config_read32(addr, value);
- return PCIBIOS_SUCCESSFUL;
- }
- static int sabre_read_byte(struct pci_dev *dev, int where, u8 *value)
- {
- if (dev->bus->number)
- return __sabre_read_byte(dev, where, value);
- if (sabre_out_of_range(dev->devfn)) {
- *value = 0xff;
- return PCIBIOS_SUCCESSFUL;
- }
- if (where < 8) {
- u16 tmp;
- __sabre_read_word(dev, where & ~1, &tmp);
- if (where & 1)
- *value = tmp >> 8;
- else
- *value = tmp & 0xff;
- return PCIBIOS_SUCCESSFUL;
- } else
- return __sabre_read_byte(dev, where, value);
- }
- static int sabre_read_word(struct pci_dev *dev, int where, u16 *value)
- {
- if (dev->bus->number)
- return __sabre_read_word(dev, where, value);
- if (sabre_out_of_range(dev->devfn)) {
- *value = 0xffff;
- return PCIBIOS_SUCCESSFUL;
- }
- if (where < 8)
- return __sabre_read_word(dev, where, value);
- else {
- u8 tmp;
- __sabre_read_byte(dev, where, &tmp);
- *value = tmp;
- __sabre_read_byte(dev, where + 1, &tmp);
- *value |= tmp << 8;
- return PCIBIOS_SUCCESSFUL;
- }
- }
- static int sabre_read_dword(struct pci_dev *dev, int where, u32 *value)
- {
- u16 tmp;
- if (dev->bus->number)
- return __sabre_read_dword(dev, where, value);
- if (sabre_out_of_range(dev->devfn)) {
- *value = 0xffffffff;
- return PCIBIOS_SUCCESSFUL;
- }
- sabre_read_word(dev, where, &tmp);
- *value = tmp;
- sabre_read_word(dev, where + 2, &tmp);
- *value |= tmp << 16;
- return PCIBIOS_SUCCESSFUL;
- }
- static int __sabre_write_byte(struct pci_dev *dev, int where, u8 value)
- {
- struct pci_pbm_info *pbm = pci_bus2pbm[dev->bus->number];
- unsigned char bus = dev->bus->number;
- unsigned int devfn = dev->devfn;
- u8 *addr;
- addr = sabre_pci_config_mkaddr(pbm, bus, devfn, where);
- if (!addr)
- return PCIBIOS_SUCCESSFUL;
- if (__sabre_out_of_range(pbm, bus, devfn))
- return PCIBIOS_SUCCESSFUL;
- pci_config_write8(addr, value);
- return PCIBIOS_SUCCESSFUL;
- }
- static int __sabre_write_word(struct pci_dev *dev, int where, u16 value)
- {
- struct pci_pbm_info *pbm = pci_bus2pbm[dev->bus->number];
- unsigned char bus = dev->bus->number;
- unsigned int devfn = dev->devfn;
- u16 *addr;
- addr = sabre_pci_config_mkaddr(pbm, bus, devfn, where);
- if (!addr)
- return PCIBIOS_SUCCESSFUL;
- if (__sabre_out_of_range(pbm, bus, devfn))
- return PCIBIOS_SUCCESSFUL;
- if (where & 0x01) {
- printk("pcibios_write_config_word: misaligned reg [%x]n",
- where);
- return PCIBIOS_SUCCESSFUL;
- }
- pci_config_write16(addr, value);
- return PCIBIOS_SUCCESSFUL;
- }
- static int __sabre_write_dword(struct pci_dev *dev, int where, u32 value)
- {
- struct pci_pbm_info *pbm = pci_bus2pbm[dev->bus->number];
- unsigned char bus = dev->bus->number;
- unsigned int devfn = dev->devfn;
- u32 *addr;
- addr = sabre_pci_config_mkaddr(pbm, bus, devfn, where);
- if (!addr)
- return PCIBIOS_SUCCESSFUL;
- if (__sabre_out_of_range(pbm, bus, devfn))
- return PCIBIOS_SUCCESSFUL;
- if (where & 0x03) {
- printk("pcibios_write_config_dword: misaligned reg [%x]n",
- where);
- return PCIBIOS_SUCCESSFUL;
- }
- pci_config_write32(addr, value);
- return PCIBIOS_SUCCESSFUL;
- }
- static int sabre_write_byte(struct pci_dev *dev, int where, u8 value)
- {
- if (dev->bus->number)
- return __sabre_write_byte(dev, where, value);
- if (sabre_out_of_range(dev->devfn))
- return PCIBIOS_SUCCESSFUL;
- if (where < 8) {
- u16 tmp;
- __sabre_read_word(dev, where & ~1, &tmp);
- if (where & 1) {
- value &= 0x00ff;
- value |= tmp << 8;
- } else {
- value &= 0xff00;
- value |= tmp;
- }
- return __sabre_write_word(dev, where & ~1, tmp);
- } else
- return __sabre_write_byte(dev, where, value);
- }
- static int sabre_write_word(struct pci_dev *dev, int where, u16 value)
- {
- if (dev->bus->number)
- return __sabre_write_word(dev, where, value);
- if (sabre_out_of_range(dev->devfn))
- return PCIBIOS_SUCCESSFUL;
- if (where < 8)
- return __sabre_write_word(dev, where, value);
- else {
- __sabre_write_byte(dev, where, value & 0xff);
- __sabre_write_byte(dev, where + 1, value >> 8);
- return PCIBIOS_SUCCESSFUL;
- }
- }
- static int sabre_write_dword(struct pci_dev *dev, int where, u32 value)
- {
- if (dev->bus->number)
- return __sabre_write_dword(dev, where, value);
- if (sabre_out_of_range(dev->devfn))
- return PCIBIOS_SUCCESSFUL;
- sabre_write_word(dev, where, value & 0xffff);
- sabre_write_word(dev, where + 2, value >> 16);
- return PCIBIOS_SUCCESSFUL;
- }
- static struct pci_ops sabre_ops = {
- sabre_read_byte,
- sabre_read_word,
- sabre_read_dword,
- sabre_write_byte,
- sabre_write_word,
- sabre_write_dword
- };
- static unsigned long sabre_pcislot_imap_offset(unsigned long ino)
- {
- unsigned int bus = (ino & 0x10) >> 4;
- unsigned int slot = (ino & 0x0c) >> 2;
- if (bus == 0)
- return SABRE_IMAP_A_SLOT0 + (slot * 8);
- else
- return SABRE_IMAP_B_SLOT0 + (slot * 8);
- }
- static unsigned long __onboard_imap_off[] = {
- /*0x20*/ SABRE_IMAP_SCSI,
- /*0x21*/ SABRE_IMAP_ETH,
- /*0x22*/ SABRE_IMAP_BPP,
- /*0x23*/ SABRE_IMAP_AU_REC,
- /*0x24*/ SABRE_IMAP_AU_PLAY,
- /*0x25*/ SABRE_IMAP_PFAIL,
- /*0x26*/ SABRE_IMAP_KMS,
- /*0x27*/ SABRE_IMAP_FLPY,
- /*0x28*/ SABRE_IMAP_SHW,
- /*0x29*/ SABRE_IMAP_KBD,
- /*0x2a*/ SABRE_IMAP_MS,
- /*0x2b*/ SABRE_IMAP_SER,
- /*0x2c*/ 0 /* reserved */,
- /*0x2d*/ 0 /* reserved */,
- /*0x2e*/ SABRE_IMAP_UE,
- /*0x2f*/ SABRE_IMAP_CE,
- /*0x30*/ SABRE_IMAP_PCIERR,
- };
- #define SABRE_ONBOARD_IRQ_BASE 0x20
- #define SABRE_ONBOARD_IRQ_LAST 0x30
- #define sabre_onboard_imap_offset(__ino)
- __onboard_imap_off[(__ino) - SABRE_ONBOARD_IRQ_BASE]
- #define sabre_iclr_offset(ino)
- ((ino & 0x20) ? (SABRE_ICLR_SCSI + (((ino) & 0x1f) << 3)) :
- (SABRE_ICLR_A_SLOT0 + (((ino) & 0x1f)<<3)))
- /* PCI SABRE INO number to Sparc PIL level. */
- static unsigned char sabre_pil_table[] = {
- /*0x00*/0, 0, 0, 0, /* PCI A slot 0 Int A, B, C, D */
- /*0x04*/0, 0, 0, 0, /* PCI A slot 1 Int A, B, C, D */
- /*0x08*/0, 0, 0, 0, /* PCI A slot 2 Int A, B, C, D */
- /*0x0c*/0, 0, 0, 0, /* PCI A slot 3 Int A, B, C, D */
- /*0x10*/0, 0, 0, 0, /* PCI B slot 0 Int A, B, C, D */
- /*0x14*/0, 0, 0, 0, /* PCI B slot 1 Int A, B, C, D */
- /*0x18*/0, 0, 0, 0, /* PCI B slot 2 Int A, B, C, D */
- /*0x1c*/0, 0, 0, 0, /* PCI B slot 3 Int A, B, C, D */
- /*0x20*/4, /* SCSI */
- /*0x21*/5, /* Ethernet */
- /*0x22*/8, /* Parallel Port */
- /*0x23*/13, /* Audio Record */
- /*0x24*/14, /* Audio Playback */
- /*0x25*/15, /* PowerFail */
- /*0x26*/4, /* second SCSI */
- /*0x27*/11, /* Floppy */
- /*0x28*/4, /* Spare Hardware */
- /*0x29*/9, /* Keyboard */
- /*0x2a*/4, /* Mouse */
- /*0x2b*/12, /* Serial */
- /*0x2c*/10, /* Timer 0 */
- /*0x2d*/11, /* Timer 1 */
- /*0x2e*/15, /* Uncorrectable ECC */
- /*0x2f*/15, /* Correctable ECC */
- /*0x30*/15, /* PCI Bus A Error */
- /*0x31*/15, /* PCI Bus B Error */
- /*0x32*/15, /* Power Management */
- };
- static int __init sabre_ino_to_pil(struct pci_dev *pdev, unsigned int ino)
- {
- int ret;
- if (pdev &&
- pdev->vendor == PCI_VENDOR_ID_SUN &&
- pdev->device == PCI_DEVICE_ID_SUN_RIO_USB)
- return 9;
- ret = sabre_pil_table[ino];
- if (ret == 0 && pdev == NULL) {
- ret = 4;
- } else if (ret == 0) {
- switch ((pdev->class >> 16) & 0xff) {
- case PCI_BASE_CLASS_STORAGE:
- ret = 4;
- break;
- case PCI_BASE_CLASS_NETWORK:
- ret = 6;
- break;
- case PCI_BASE_CLASS_DISPLAY:
- ret = 9;
- break;
- case PCI_BASE_CLASS_MULTIMEDIA:
- case PCI_BASE_CLASS_MEMORY:
- case PCI_BASE_CLASS_BRIDGE:
- case PCI_BASE_CLASS_SERIAL:
- ret = 10;
- break;
- default:
- ret = 4;
- break;
- };
- }
- return ret;
- }
- static unsigned int __init sabre_irq_build(struct pci_pbm_info *pbm,
- struct pci_dev *pdev,
- unsigned int ino)
- {
- struct pci_controller_info *p = pbm->parent;
- struct ino_bucket *bucket;
- unsigned long imap, iclr;
- unsigned long imap_off, iclr_off;
- int pil, inofixup = 0;
- ino &= PCI_IRQ_INO;
- if (ino < SABRE_ONBOARD_IRQ_BASE) {
- /* PCI slot */
- imap_off = sabre_pcislot_imap_offset(ino);
- } else {
- /* onboard device */
- if (ino > SABRE_ONBOARD_IRQ_LAST) {
- prom_printf("sabre_irq_build: Wacky INO [%x]n", ino);
- prom_halt();
- }
- imap_off = sabre_onboard_imap_offset(ino);
- }
- /* Now build the IRQ bucket. */
- pil = sabre_ino_to_pil(pdev, ino);
- if (PIL_RESERVED(pil))
- BUG();
- imap = p->controller_regs + imap_off;
- imap += 4;
- iclr_off = sabre_iclr_offset(ino);
- iclr = p->controller_regs + iclr_off;
- iclr += 4;
- if ((ino & 0x20) == 0)
- inofixup = ino & 0x03;
- bucket = __bucket(build_irq(pil, inofixup, iclr, imap));
- bucket->flags |= IBF_PCI;
- if (pdev) {
- struct pcidev_cookie *pcp = pdev->sysdata;
- /* When a device lives behind a bridge deeper in the
- * PCI bus topology than APB, a special sequence must
- * run to make sure all pending DMA transfers at the
- * time of IRQ delivery are visible in the coherency
- * domain by the cpu. This sequence is to perform
- * a read on the far side of the non-APB bridge, then
- * perform a read of Sabre's DMA write-sync register.
- *
- * Currently, the PCI_CONFIG register for the device
- * is used for this read from the far side of the bridge.
- */
- if (pdev->bus->number != pcp->pbm->pci_first_busno) {
- bucket->flags |= IBF_DMA_SYNC;
- bucket->synctab_ent = dma_sync_reg_table_entry++;
- dma_sync_reg_table[bucket->synctab_ent] =
- (unsigned long) sabre_pci_config_mkaddr(
- pcp->pbm,
- pdev->bus->number, pdev->devfn, PCI_COMMAND);
- }
- }
- return __irq(bucket);
- }
- /* SABRE error handling support. */
- static void sabre_check_iommu_error(struct pci_controller_info *p,
- unsigned long afsr,
- unsigned long afar)
- {
- struct pci_iommu *iommu = p->pbm_A.iommu;
- unsigned long iommu_tag[16];
- unsigned long iommu_data[16];
- unsigned long flags;
- u64 control;
- int i;
- spin_lock_irqsave(&iommu->lock, flags);
- control = sabre_read(iommu->iommu_control);
- if (control & SABRE_IOMMUCTRL_ERR) {
- char *type_string;
- /* Clear the error encountered bit.
- * NOTE: On Sabre this is write 1 to clear,
- * which is different from Psycho.
- */
- sabre_write(iommu->iommu_control, control);
- switch((control & SABRE_IOMMUCTRL_ERRSTS) >> 25UL) {
- case 1:
- type_string = "Invalid Error";
- break;
- case 3:
- type_string = "ECC Error";
- break;
- default:
- type_string = "Unknown";
- break;
- };
- printk("SABRE%d: IOMMU Error, type[%s]n",
- p->index, type_string);
- /* Enter diagnostic mode and probe for error'd
- * entries in the IOTLB.
- */
- control &= ~(SABRE_IOMMUCTRL_ERRSTS | SABRE_IOMMUCTRL_ERR);
- sabre_write(iommu->iommu_control,
- (control | SABRE_IOMMUCTRL_DENAB));
- for (i = 0; i < 16; i++) {
- unsigned long base = p->controller_regs;
- iommu_tag[i] =
- sabre_read(base + SABRE_IOMMU_TAG + (i * 8UL));
- iommu_data[i] =
- sabre_read(base + SABRE_IOMMU_DATA + (i * 8UL));
- sabre_write(base + SABRE_IOMMU_TAG + (i * 8UL), 0);
- sabre_write(base + SABRE_IOMMU_DATA + (i * 8UL), 0);
- }
- sabre_write(iommu->iommu_control, control);
- for (i = 0; i < 16; i++) {
- unsigned long tag, data;
- tag = iommu_tag[i];
- if (!(tag & SABRE_IOMMUTAG_ERR))
- continue;
- data = iommu_data[i];
- switch((tag & SABRE_IOMMUTAG_ERRSTS) >> 23UL) {
- case 1:
- type_string = "Invalid Error";
- break;
- case 3:
- type_string = "ECC Error";
- break;
- default:
- 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,
- ((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,
- ((data & SABRE_IOMMUDATA_VALID) ? 1 : 0),
- ((data & SABRE_IOMMUDATA_USED) ? 1 : 0),
- ((data & SABRE_IOMMUDATA_CACHE) ? 1 : 0),
- ((data & SABRE_IOMMUDATA_PPN) << IOMMU_PAGE_SHIFT));
- }
- }
- spin_unlock_irqrestore(&iommu->lock, flags);
- }
- static void sabre_ue_intr(int irq, void *dev_id, struct pt_regs *regs)
- {
- struct pci_controller_info *p = dev_id;
- unsigned long afsr_reg = p->controller_regs + SABRE_UE_AFSR;
- unsigned long afar_reg = p->controller_regs + SABRE_UECE_AFAR;
- unsigned long afsr, afar, error_bits;
- int reported;
- /* Latch uncorrectable error status. */
- afar = sabre_read(afar_reg);
- afsr = sabre_read(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;
- sabre_write(afsr_reg, error_bits);
- /* Log the error. */
- printk("SABRE%d: Uncorrectable Error, primary error type[%s%s]n",
- p->index,
- ((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,
- (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);
- 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. */
- sabre_check_iommu_error(p, afsr, afar);
- }
- static void sabre_ce_intr(int irq, void *dev_id, struct pt_regs *regs)
- {
- struct pci_controller_info *p = dev_id;
- unsigned long afsr_reg = p->controller_regs + SABRE_CE_AFSR;
- unsigned long afar_reg = p->controller_regs + SABRE_UECE_AFAR;
- unsigned long afsr, afar, error_bits;
- int reported;
- /* Latch error status. */
- afar = sabre_read(afar_reg);
- afsr = sabre_read(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;
- sabre_write(afsr_reg, error_bits);
- /* Log the error. */
- printk("SABRE%d: Correctable Error, primary error type[%s]n",
- p->index,
- ((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("SABRE%d: syndrome[%02lx] bytemask[%04lx] dword_offset[%lx] "
- "was_block(%d)n",
- p->index,
- (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);
- 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");
- }
- static void sabre_pcierr_intr(int irq, void *dev_id, struct pt_regs *regs)
- {
- struct pci_controller_info *p = dev_id;
- unsigned long afsr_reg, afar_reg;
- unsigned long afsr, afar, error_bits;
- int reported;
- afsr_reg = p->controller_regs + SABRE_PIOAFSR;
- afar_reg = p->controller_regs + SABRE_PIOAFAR;
- /* Latch error status. */
- afar = sabre_read(afar_reg);
- afsr = sabre_read(afsr_reg);
- /* Clear primary/secondary error status bits. */
- error_bits = afsr &
- (SABRE_PIOAFSR_PMA | SABRE_PIOAFSR_PTA |
- SABRE_PIOAFSR_PRTRY | SABRE_PIOAFSR_PPERR |
- SABRE_PIOAFSR_SMA | SABRE_PIOAFSR_STA |
- SABRE_PIOAFSR_SRTRY | SABRE_PIOAFSR_SPERR);
- if (!error_bits)
- return;
- sabre_write(afsr_reg, error_bits);
- /* Log the error. */
- printk("SABRE%d: PCI Error, primary error type[%s]n",
- p->index,
- (((error_bits & SABRE_PIOAFSR_PMA) ?
- "Master Abort" :
- ((error_bits & SABRE_PIOAFSR_PTA) ?
- "Target Abort" :
- ((error_bits & SABRE_PIOAFSR_PRTRY) ?
- "Excessive Retries" :
- ((error_bits & SABRE_PIOAFSR_PPERR) ?
- "Parity Error" : "???"))))));
- printk("SABRE%d: bytemask[%04lx] was_block(%d)n",
- p->index,
- (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);
- reported = 0;
- if (afsr & SABRE_PIOAFSR_SMA) {
- reported++;
- printk("(Master Abort)");
- }
- if (afsr & SABRE_PIOAFSR_STA) {
- reported++;
- printk("(Target Abort)");
- }
- if (afsr & SABRE_PIOAFSR_SRTRY) {
- reported++;
- printk("(Excessive Retries)");
- }
- if (afsr & SABRE_PIOAFSR_SPERR) {
- reported++;
- printk("(Parity Error)");
- }
- if (!reported)
- printk("(none)");
- printk("]n");
- /* For the error types shown, scan both PCI buses for devices
- * which have logged that error type.
- */
- /* If we see a Target Abort, this could be the result of an
- * IOMMU translation error of some sort. It is extremely
- * useful to log this information as usually it indicates
- * 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);
- pci_scan_for_target_abort(p, &p->pbm_B, p->pbm_B.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(p, &p->pbm_B, p->pbm_B.pci_bus);
- }
- /* For excessive retries, SABRE/PBM will abort the device
- * and there is no way to specifically check for excessive
- * retries in the config space status registers. So what
- * we hope is that we'll catch it via the master/target
- * abort events.
- */
- 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(p, &p->pbm_B, p->pbm_B.pci_bus);
- }
- }
- /* XXX What about PowerFail/PowerManagement??? -DaveM */
- #define SABRE_UE_INO 0x2e
- #define SABRE_CE_INO 0x2f
- #define SABRE_PCIERR_INO 0x30
- static void __init sabre_register_error_handlers(struct pci_controller_info *p)
- {
- struct pci_pbm_info *pbm = &p->pbm_A; /* arbitrary */
- unsigned long base = p->controller_regs;
- unsigned long irq, portid = p->portid;
- u64 tmp;
- /* We clear the error bits in the appropriate AFSR before
- * registering the handler so that we don't get spurious
- * interrupts.
- */
- sabre_write(base + SABRE_UE_AFSR,
- (SABRE_UEAFSR_PDRD | SABRE_UEAFSR_PDWR |
- SABRE_UEAFSR_SDRD | SABRE_UEAFSR_SDWR |
- SABRE_UEAFSR_SDTE | SABRE_UEAFSR_PDTE));
- irq = sabre_irq_build(pbm, NULL, (portid << 6) | SABRE_UE_INO);
- if (request_irq(irq, sabre_ue_intr,
- SA_SHIRQ, "SABRE UE", p) < 0) {
- prom_printf("SABRE%d: Cannot register UE interrupt.n",
- p->index);
- prom_halt();
- }
- sabre_write(base + SABRE_CE_AFSR,
- (SABRE_CEAFSR_PDRD | SABRE_CEAFSR_PDWR |
- SABRE_CEAFSR_SDRD | SABRE_CEAFSR_SDWR));
- irq = sabre_irq_build(pbm, NULL, (portid << 6) | SABRE_CE_INO);
- if (request_irq(irq, sabre_ce_intr,
- SA_SHIRQ, "SABRE CE", p) < 0) {
- prom_printf("SABRE%d: Cannot register CE interrupt.n",
- p->index);
- prom_halt();
- }
- irq = sabre_irq_build(pbm, NULL, (portid << 6) | SABRE_PCIERR_INO);
- if (request_irq(irq, sabre_pcierr_intr,
- SA_SHIRQ, "SABRE PCIERR", p) < 0) {
- prom_printf("SABRE%d: Cannot register PciERR interrupt.n",
- p->index);
- prom_halt();
- }
- tmp = sabre_read(base + SABRE_PCICTRL);
- tmp |= SABRE_PCICTRL_ERREN;
- sabre_write(base + SABRE_PCICTRL, tmp);
- }
- static void __init sabre_resource_adjust(struct pci_dev *pdev,
- struct resource *res,
- struct resource *root)
- {
- struct pci_pbm_info *pbm = pci_bus2pbm[pdev->bus->number];
- struct pci_controller_info *p = pbm->parent;
- unsigned long base;
- if (res->flags & IORESOURCE_IO)
- base = p->controller_regs + SABRE_IOSPACE;
- else
- base = p->controller_regs + SABRE_MEMSPACE;
- res->start += base;
- res->end += base;
- }
- static void __init sabre_base_address_update(struct pci_dev *pdev, int resource)
- {
- struct pcidev_cookie *pcp = pdev->sysdata;
- struct pci_pbm_info *pbm = pcp->pbm;
- struct pci_controller_info *p = pbm->parent;
- struct resource *res;
- unsigned long base;
- u32 reg;
- int where, size, is_64bit;
- res = &pdev->resource[resource];
- if (resource < 6) {
- where = PCI_BASE_ADDRESS_0 + (resource * 4);
- } else if (resource == PCI_ROM_RESOURCE) {
- where = pdev->rom_base_reg;
- } else {
- /* Somebody might have asked allocation of a non-standard resource */
- return;
- }
- is_64bit = 0;
- if (res->flags & IORESOURCE_IO)
- base = p->controller_regs + SABRE_IOSPACE;
- else {
- base = p->controller_regs + SABRE_MEMSPACE;
- if ((res->flags & PCI_BASE_ADDRESS_MEM_TYPE_MASK)
- == PCI_BASE_ADDRESS_MEM_TYPE_64)
- is_64bit = 1;
- }
- size = res->end - res->start;
- pci_read_config_dword(pdev, where, ®);
- reg = ((reg & size) |
- (((u32)(res->start - base)) & ~size));
- if (resource == PCI_ROM_RESOURCE) {
- reg |= PCI_ROM_ADDRESS_ENABLE;
- res->flags |= PCI_ROM_ADDRESS_ENABLE;
- }
- pci_write_config_dword(pdev, where, reg);
- /* This knows that the upper 32-bits of the address
- * must be zero. Our PCI common layer enforces this.
- */
- if (is_64bit)
- pci_write_config_dword(pdev, where + 4, 0);
- }
- static void __init apb_init(struct pci_controller_info *p, struct pci_bus *sabre_bus)
- {
- struct list_head *walk = &sabre_bus->devices;
- for (walk = walk->next; walk != &sabre_bus->devices; walk = walk->next) {
- struct pci_dev *pdev = pci_dev_b(walk);
- if (pdev->vendor == PCI_VENDOR_ID_SUN &&
- pdev->device == PCI_DEVICE_ID_SUN_SIMBA) {
- u16 word;
- sabre_read_word(pdev, PCI_COMMAND, &word);
- word |= PCI_COMMAND_SERR | PCI_COMMAND_PARITY |
- PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY |
- PCI_COMMAND_IO;
- sabre_write_word(pdev, PCI_COMMAND, word);
- /* Status register bits are "write 1 to clear". */
- sabre_write_word(pdev, PCI_STATUS, 0xffff);
- sabre_write_word(pdev, PCI_SEC_STATUS, 0xffff);
- /* Use a primary/seconday latency timer value
- * of 64.
- */
- sabre_write_byte(pdev, PCI_LATENCY_TIMER, 64);
- sabre_write_byte(pdev, PCI_SEC_LATENCY_TIMER, 64);
- /* Enable reporting/forwarding of master aborts,
- * parity, and SERR.
- */
- sabre_write_byte(pdev, PCI_BRIDGE_CONTROL,
- (PCI_BRIDGE_CTL_PARITY |
- PCI_BRIDGE_CTL_SERR |
- PCI_BRIDGE_CTL_MASTER_ABORT));
- }
- }
- }
- static struct pcidev_cookie *alloc_bridge_cookie(struct pci_pbm_info *pbm)
- {
- struct pcidev_cookie *cookie = kmalloc(sizeof(*cookie), GFP_KERNEL);
- if (!cookie) {
- prom_printf("SABRE: Critical allocation failure.n");
- prom_halt();
- }
- /* All we care about is the PBM. */
- memset(cookie, 0, sizeof(*cookie));
- cookie->pbm = pbm;
- return cookie;
- }
- static void __init sabre_scan_bus(struct pci_controller_info *p)
- {
- static int once;
- struct pci_bus *sabre_bus;
- struct pci_pbm_info *pbm;
- struct pcidev_cookie *cookie;
- struct list_head *walk;
- int sabres_scanned;
- /* The APB bridge speaks to the Sabre host PCI bridge
- * at 66Mhz, but the front side of APB runs at 33Mhz
- * for both segments.
- */
- p->pbm_A.is_66mhz_capable = 0;
- p->pbm_B.is_66mhz_capable = 0;
- /* Unlike for PSYCHO, we can only have one SABRE
- * in a system. Having multiple SABREs is thus
- * and error, and as a consequence we do not need
- * to do any bus renumbering but we do have to have
- * the pci_bus2pbm array setup properly.
- *
- * Also note that the SABRE host bridge is hardwired
- * to live at bus 0.
- */
- if (once != 0) {
- prom_printf("SABRE: Multiple controllers unsupported.n");
- prom_halt();
- }
- once++;
- cookie = alloc_bridge_cookie(&p->pbm_A);
- /* The pci_bus2pbm table has already been setup in sabre_init. */
- sabre_bus = pci_scan_bus(p->pci_first_busno,
- p->pci_ops,
- &p->pbm_A);
- pci_fixup_host_bridge_self(sabre_bus);
- sabre_bus->self->sysdata = cookie;
- apb_init(p, sabre_bus);
- sabres_scanned = 0;
- walk = &sabre_bus->children;
- for (walk = walk->next; walk != &sabre_bus->children; walk = walk->next) {
- struct pci_bus *pbus = pci_bus_b(walk);
- if (pbus->number == p->pbm_A.pci_first_busno) {
- pbm = &p->pbm_A;
- } else if (pbus->number == p->pbm_B.pci_first_busno) {
- pbm = &p->pbm_B;
- } else
- continue;
- cookie = alloc_bridge_cookie(pbm);
- pbus->self->sysdata = cookie;
- sabres_scanned++;
- pbus->sysdata = pbm;
- pbm->pci_bus = pbus;
- pci_fill_in_pbm_cookies(pbus, pbm, pbm->prom_node);
- pci_record_assignments(pbm, pbus);
- pci_assign_unassigned(pbm, pbus);
- pci_fixup_irq(pbm, pbus);
- pci_determine_66mhz_disposition(pbm, pbus);
- pci_setup_busmastering(pbm, pbus);
- }
- if (!sabres_scanned) {
- /* Hummingbird, no APBs. */
- pbm = &p->pbm_A;
- sabre_bus->sysdata = pbm;
- pbm->pci_bus = sabre_bus;
- pci_fill_in_pbm_cookies(sabre_bus, pbm, pbm->prom_node);
- pci_record_assignments(pbm, sabre_bus);
- pci_assign_unassigned(pbm, sabre_bus);
- pci_fixup_irq(pbm, sabre_bus);
- pci_determine_66mhz_disposition(pbm, sabre_bus);
- pci_setup_busmastering(pbm, sabre_bus);
- }
- sabre_register_error_handlers(p);
- }
- static void __init sabre_iommu_init(struct pci_controller_info *p,
- int tsbsize, unsigned long dvma_offset,
- u32 dma_mask)
- {
- struct pci_iommu *iommu = p->pbm_A.iommu;
- unsigned long tsbbase, i, order;
- u64 control;
- /* Setup initial software IOMMU state. */
- spin_lock_init(&iommu->lock);
- iommu->iommu_cur_ctx = 0;
- /* Register addresses. */
- iommu->iommu_control = p->controller_regs + SABRE_IOMMU_CONTROL;
- iommu->iommu_tsbbase = p->controller_regs + SABRE_IOMMU_TSBBASE;
- iommu->iommu_flush = p->controller_regs + SABRE_IOMMU_FLUSH;
- iommu->write_complete_reg = p->controller_regs + SABRE_WRSYNC;
- /* Sabre's IOMMU lacks ctx flushing. */
- iommu->iommu_ctxflush = 0;
-
- /* Invalidate TLB Entries. */
- control = sabre_read(p->controller_regs + SABRE_IOMMU_CONTROL);
- control |= SABRE_IOMMUCTRL_DENAB;
- sabre_write(p->controller_regs + SABRE_IOMMU_CONTROL, control);
- for(i = 0; i < 16; i++) {
- sabre_write(p->controller_regs + SABRE_IOMMU_TAG + (i * 8UL), 0);
- sabre_write(p->controller_regs + SABRE_IOMMU_DATA + (i * 8UL), 0);
- }
- /* Leave diag mode enabled for full-flushing done
- * in pci_iommu.c
- */
- tsbbase = __get_free_pages(GFP_KERNEL, order = get_order(tsbsize * 1024 * 8));
- if (!tsbbase) {
- prom_printf("SABRE_IOMMU: Error, gfp(tsb) failed.n");
- prom_halt();
- }
- iommu->page_table = (iopte_t *)tsbbase;
- iommu->page_table_map_base = dvma_offset;
- iommu->dma_addr_mask = dma_mask;
- memset((char *)tsbbase, 0, PAGE_SIZE << order);
- sabre_write(p->controller_regs + SABRE_IOMMU_TSBBASE, __pa(tsbbase));
- control = sabre_read(p->controller_regs + SABRE_IOMMU_CONTROL);
- control &= ~(SABRE_IOMMUCTRL_TSBSZ | SABRE_IOMMUCTRL_TBWSZ);
- control |= SABRE_IOMMUCTRL_ENAB;
- switch(tsbsize) {
- case 64:
- control |= SABRE_IOMMU_TSBSZ_64K;
- iommu->page_table_sz_bits = 16;
- break;
- case 128:
- control |= SABRE_IOMMU_TSBSZ_128K;
- iommu->page_table_sz_bits = 17;
- break;
- default:
- prom_printf("iommu_init: Illegal TSB size %dn", tsbsize);
- prom_halt();
- break;
- }
- sabre_write(p->controller_regs + SABRE_IOMMU_CONTROL, control);
- /* We start with no consistent mappings. */
- iommu->lowest_consistent_map =
- 1 << (iommu->page_table_sz_bits - PBM_LOGCLUSTERS);
- for (i = 0; i < PBM_NCLUSTERS; i++) {
- iommu->alloc_info[i].flush = 0;
- iommu->alloc_info[i].next = 0;
- }
- }
- static void __init pbm_register_toplevel_resources(struct pci_controller_info *p,
- struct pci_pbm_info *pbm)
- {
- char *name = pbm->name;
- unsigned long ibase = p->controller_regs + SABRE_IOSPACE;
- unsigned long mbase = p->controller_regs + SABRE_MEMSPACE;
- unsigned int devfn;
- unsigned long first, last, i;
- u8 *addr, map;
- sprintf(name, "SABRE%d PBM%c",
- p->index,
- (pbm == &p->pbm_A ? 'A' : 'B'));
- pbm->io_space.name = pbm->mem_space.name = name;
- devfn = PCI_DEVFN(1, (pbm == &p->pbm_A) ? 0 : 1);
- addr = sabre_pci_config_mkaddr(pbm, 0, devfn, APB_IO_ADDRESS_MAP);
- map = 0;
- pci_config_read8(addr, &map);
- first = 8;
- last = 0;
- for (i = 0; i < 8; i++) {
- if ((map & (1 << i)) != 0) {
- if (first > i)
- first = i;
- if (last < i)
- last = i;
- }
- }
- pbm->io_space.start = ibase + (first << 21UL);
- pbm->io_space.end = ibase + (last << 21UL) + ((1 << 21UL) - 1);
- pbm->io_space.flags = IORESOURCE_IO;
- addr = sabre_pci_config_mkaddr(pbm, 0, devfn, APB_MEM_ADDRESS_MAP);
- map = 0;
- pci_config_read8(addr, &map);
- first = 8;
- last = 0;
- for (i = 0; i < 8; i++) {
- if ((map & (1 << i)) != 0) {
- if (first > i)
- first = i;
- if (last < i)
- last = i;
- }
- }
- pbm->mem_space.start = mbase + (first << 29UL);
- pbm->mem_space.end = mbase + (last << 29UL) + ((1 << 29UL) - 1);
- pbm->mem_space.flags = IORESOURCE_MEM;
- if (request_resource(&ioport_resource, &pbm->io_space) < 0) {
- prom_printf("Cannot register PBM-%c's IO space.n",
- (pbm == &p->pbm_A ? 'A' : 'B'));
- prom_halt();
- }
- if (request_resource(&iomem_resource, &pbm->mem_space) < 0) {
- prom_printf("Cannot register PBM-%c's MEM space.n",
- (pbm == &p->pbm_A ? 'A' : 'B'));
- prom_halt();
- }
- /* Register legacy regions if this PBM covers that area. */
- if (pbm->io_space.start == ibase &&
- pbm->mem_space.start == mbase)
- pci_register_legacy_regions(&pbm->io_space,
- &pbm->mem_space);
- }
- static void __init sabre_pbm_init(struct pci_controller_info *p, int sabre_node, u32 dma_begin)
- {
- struct pci_pbm_info *pbm;
- char namebuf[128];
- u32 busrange[2];
- int node, simbas_found;
- simbas_found = 0;
- node = prom_getchild(sabre_node);
- while ((node = prom_searchsiblings(node, "pci")) != 0) {
- int err;
- err = prom_getproperty(node, "model", namebuf, sizeof(namebuf));
- if ((err <= 0) || strncmp(namebuf, "SUNW,simba", err))
- goto next_pci;
- err = prom_getproperty(node, "bus-range",
- (char *)&busrange[0], sizeof(busrange));
- if (err == 0 || err == -1) {
- prom_printf("APB: Error, cannot get PCI bus-range.n");
- prom_halt();
- }
- simbas_found++;
- if (busrange[0] == 1)
- pbm = &p->pbm_B;
- else
- pbm = &p->pbm_A;
- pbm->parent = p;
- pbm->prom_node = node;
- pbm->pci_first_slot = 1;
- pbm->pci_first_busno = busrange[0];
- pbm->pci_last_busno = busrange[1];
- for (err = pbm->pci_first_busno;
- err <= pbm->pci_last_busno;
- err++)
- pci_bus2pbm[err] = pbm;
- prom_getstring(node, "name", pbm->prom_name, sizeof(pbm->prom_name));
- err = prom_getproperty(node, "ranges",
- (char *)pbm->pbm_ranges,
- sizeof(pbm->pbm_ranges));
- if (err != -1)
- pbm->num_pbm_ranges =
- (err / sizeof(struct linux_prom_pci_ranges));
- else
- pbm->num_pbm_ranges = 0;
- err = prom_getproperty(node, "interrupt-map",
- (char *)pbm->pbm_intmap,
- sizeof(pbm->pbm_intmap));
- if (err != -1) {
- pbm->num_pbm_intmap = (err / sizeof(struct linux_prom_pci_intmap));
- err = prom_getproperty(node, "interrupt-map-mask",
- (char *)&pbm->pbm_intmask,
- sizeof(pbm->pbm_intmask));
- if (err == -1) {
- prom_printf("APB: Fatal error, no interrupt-map-mask.n");
- prom_halt();
- }
- } else {
- pbm->num_pbm_intmap = 0;
- memset(&pbm->pbm_intmask, 0, sizeof(pbm->pbm_intmask));
- }
- pbm_register_toplevel_resources(p, pbm);
- next_pci:
- node = prom_getsibling(node);
- if (!node)
- break;
- }
- if (simbas_found == 0) {
- int err;
- /* No APBs underneath, probably this is a hummingbird
- * system.
- */
- pbm = &p->pbm_A;
- pbm->parent = p;
- pbm->prom_node = sabre_node;
- pbm->pci_first_busno = p->pci_first_busno;
- pbm->pci_last_busno = p->pci_last_busno;
- for (err = pbm->pci_first_busno;
- err <= pbm->pci_last_busno;
- err++)
- pci_bus2pbm[err] = pbm;
- prom_getstring(sabre_node, "name", pbm->prom_name, sizeof(pbm->prom_name));
- err = prom_getproperty(sabre_node, "ranges",
- (char *) pbm->pbm_ranges,
- sizeof(pbm->pbm_ranges));
- if (err != -1)
- pbm->num_pbm_ranges =
- (err / sizeof(struct linux_prom_pci_ranges));
- else
- pbm->num_pbm_ranges = 0;
- err = prom_getproperty(sabre_node, "interrupt-map",
- (char *) pbm->pbm_intmap,
- sizeof(pbm->pbm_intmap));
- if (err != -1) {
- pbm->num_pbm_intmap = (err / sizeof(struct linux_prom_pci_intmap));
- err = prom_getproperty(sabre_node, "interrupt-map-mask",
- (char *)&pbm->pbm_intmask,
- sizeof(pbm->pbm_intmask));
- if (err == -1) {
- prom_printf("Hummingbird: Fatal error, no interrupt-map-mask.n");
- prom_halt();
- }
- } else {
- pbm->num_pbm_intmap = 0;
- memset(&pbm->pbm_intmask, 0, sizeof(pbm->pbm_intmask));
- }
- sprintf(pbm->name, "SABRE%d PBM%c", p->index,
- (pbm == &p->pbm_A ? 'A' : 'B'));
- pbm->io_space.name = pbm->mem_space.name = pbm->name;
- /* Hack up top-level resources. */
- pbm->io_space.start = p->controller_regs + SABRE_IOSPACE;
- pbm->io_space.end = pbm->io_space.start + (1UL << 24) - 1UL;
- pbm->io_space.flags = IORESOURCE_IO;
- pbm->mem_space.start = p->controller_regs + SABRE_MEMSPACE;
- pbm->mem_space.end = pbm->mem_space.start + (unsigned long)dma_begin - 1UL;
- pbm->mem_space.flags = IORESOURCE_MEM;
- if (request_resource(&ioport_resource, &pbm->io_space) < 0) {
- prom_printf("Cannot register Hummingbird's IO space.n");
- prom_halt();
- }
- if (request_resource(&iomem_resource, &pbm->mem_space) < 0) {
- prom_printf("Cannot register Hummingbird's MEM space.n");
- prom_halt();
- }
- pci_register_legacy_regions(&pbm->io_space,
- &pbm->mem_space);
- }
- }
- void __init sabre_init(int pnode, char *model_name)
- {
- struct linux_prom64_registers pr_regs[2];
- struct pci_controller_info *p;
- struct pci_iommu *iommu;
- unsigned long flags;
- int tsbsize, err;
- u32 busrange[2];
- u32 vdma[2];
- u32 upa_portid, dma_mask;
- int bus;
- hummingbird_p = 0;
- if (!strcmp(model_name, "pci108e,a001"))
- hummingbird_p = 1;
- else if (!strcmp(model_name, "SUNW,sabre")) {
- char compat[64];
- if (prom_getproperty(pnode, "compatible",
- compat, sizeof(compat)) > 0 &&
- !strcmp(compat, "pci108e,a001")) {
- hummingbird_p = 1;
- } else {
- int cpu_node = linux_cpus[0].prom_node;
- /* Of course, Sun has to encode things a thousand
- * different ways, inconsistently.
- */
- if (prom_getproperty(cpu_node, "name",
- compat, sizeof(compat)) > 0 &&
- !strcmp(compat, "SUNW,UltraSPARC-IIe"))
- hummingbird_p = 1;
- }
- }
- p = kmalloc(sizeof(*p), GFP_ATOMIC);
- if (!p) {
- prom_printf("SABRE: Error, kmalloc(pci_controller_info) failed.n");
- prom_halt();
- }
- memset(p, 0, sizeof(*p));
- iommu = kmalloc(sizeof(*iommu), GFP_ATOMIC);
- if (!iommu) {
- prom_printf("SABRE: Error, kmalloc(pci_iommu) failed.n");
- prom_halt();
- }
- memset(iommu, 0, sizeof(*iommu));
- p->pbm_A.iommu = p->pbm_B.iommu = iommu;
- upa_portid = prom_getintdefault(pnode, "upa-portid", 0xff);
- spin_lock_irqsave(&pci_controller_lock, flags);
- p->next = pci_controller_root;
- pci_controller_root = p;
- spin_unlock_irqrestore(&pci_controller_lock, flags);
- p->portid = upa_portid;
- p->index = pci_num_controllers++;
- p->pbms_same_domain = 1;
- p->scan_bus = sabre_scan_bus;
- p->irq_build = sabre_irq_build;
- p->base_address_update = sabre_base_address_update;
- p->resource_adjust = sabre_resource_adjust;
- p->pci_ops = &sabre_ops;
- /*
- * Map in SABRE register set and report the presence of this SABRE.
- */
- err = prom_getproperty(pnode, "reg",
- (char *)&pr_regs[0], sizeof(pr_regs));
- if(err == 0 || err == -1) {
- prom_printf("SABRE: Error, cannot get U2P registers "
- "from PROM.n");
- prom_halt();
- }
- /*
- * First REG in property is base of entire SABRE register space.
- */
- p->controller_regs = pr_regs[0].phys_addr;
- pci_dma_wsync = p->controller_regs + SABRE_WRSYNC;
- printk("PCI: Found SABRE, main regs at %016lx, wsync at %016lxn",
- p->controller_regs, pci_dma_wsync);
- /* Error interrupts are enabled later after the bus scan. */
- sabre_write(p->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_B.config_space =
- (p->controller_regs + SABRE_CONFIGSPACE);
- printk("SABRE: Shared PCI config space at %016lxn",
- p->pbm_A.config_space);
- err = prom_getproperty(pnode, "virtual-dma",
- (char *)&vdma[0], sizeof(vdma));
- if(err == 0 || err == -1) {
- prom_printf("SABRE: Error, cannot get virtual-dma property "
- "from PROM.n");
- prom_halt();
- }
- 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:
- prom_printf("SABRE: strange virtual-dma size.n");
- prom_halt();
- }
- sabre_iommu_init(p, tsbsize, vdma[0], dma_mask);
- printk("SABRE: DVMA at %08x [%08x]n", vdma[0], vdma[1]);
- err = prom_getproperty(pnode, "bus-range",
- (char *)&busrange[0], sizeof(busrange));
- if(err == 0 || err == -1) {
- prom_printf("SABRE: Error, cannot get PCI bus-range "
- " from PROM.n");
- prom_halt();
- }
- p->pci_first_busno = busrange[0];
- p->pci_last_busno = busrange[1];
- /*
- * Handle config space reads through any Simba on APB.
- */
- for (bus = p->pci_first_busno; bus <= p->pci_last_busno; bus++)
- pci_bus2pbm[bus] = &p->pbm_A;
- /*
- * Look for APB underneath.
- */
- sabre_pbm_init(p, pnode, vdma[0]);
- }