diff options
Diffstat (limited to 'arch/sparc64/kernel/pci_schizo.c')
| -rw-r--r-- | arch/sparc64/kernel/pci_schizo.c | 2187 |
1 files changed, 2187 insertions, 0 deletions
diff --git a/arch/sparc64/kernel/pci_schizo.c b/arch/sparc64/kernel/pci_schizo.c new file mode 100644 index 0000000..e93fcad --- /dev/null +++ b/arch/sparc64/kernel/pci_schizo.c @@ -0,0 +1,2187 @@ +/* $Id: pci_schizo.c,v 1.24 2002/01/23 11:27:32 davem Exp $ + * pci_schizo.c: SCHIZO/TOMATILLO specific PCI controller support. + * + * Copyright (C) 2001, 2002, 2003 David S. Miller (davem@redhat.com) + */ + +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/pci.h> +#include <linux/init.h> +#include <linux/slab.h> +#include <linux/interrupt.h> + +#include <asm/pbm.h> +#include <asm/iommu.h> +#include <asm/irq.h> +#include <asm/upa.h> + +#include "pci_impl.h" +#include "iommu_common.h" + +/* All SCHIZO registers are 64-bits. The following accessor + * routines are how they are accessed. The REG parameter + * is a physical address. + */ +#define schizo_read(__reg) \ +({ u64 __ret; \ + __asm__ __volatile__("ldxa [%1] %2, %0" \ + : "=r" (__ret) \ + : "r" (__reg), "i" (ASI_PHYS_BYPASS_EC_E) \ + : "memory"); \ + __ret; \ +}) +#define schizo_write(__reg, __val) \ + __asm__ __volatile__("stxa %0, [%1] %2" \ + : /* no outputs */ \ + : "r" (__val), "r" (__reg), \ + "i" (ASI_PHYS_BYPASS_EC_E) \ + : "memory") + +/* This is a convention that at least Excalibur and Merlin + * follow. I suppose the SCHIZO used in Starcat and friends + * will do similar. + * + * The only way I could see this changing is if the newlink + * block requires more space in Schizo's address space than + * they predicted, thus requiring an address space reorg when + * the newer Schizo is taped out. + */ + +/* Streaming buffer control register. */ +#define SCHIZO_STRBUF_CTRL_LPTR 0x00000000000000f0UL /* LRU Lock Pointer */ +#define SCHIZO_STRBUF_CTRL_LENAB 0x0000000000000008UL /* LRU Lock Enable */ +#define SCHIZO_STRBUF_CTRL_RRDIS 0x0000000000000004UL /* Rerun Disable */ +#define SCHIZO_STRBUF_CTRL_DENAB 0x0000000000000002UL /* Diagnostic Mode Enable */ +#define SCHIZO_STRBUF_CTRL_ENAB 0x0000000000000001UL /* Streaming Buffer Enable */ + +/* IOMMU control register. */ +#define SCHIZO_IOMMU_CTRL_RESV 0xfffffffff9000000UL /* Reserved */ +#define SCHIZO_IOMMU_CTRL_XLTESTAT 0x0000000006000000UL /* Translation Error Status */ +#define SCHIZO_IOMMU_CTRL_XLTEERR 0x0000000001000000UL /* Translation Error encountered */ +#define SCHIZO_IOMMU_CTRL_LCKEN 0x0000000000800000UL /* Enable translation locking */ +#define SCHIZO_IOMMU_CTRL_LCKPTR 0x0000000000780000UL /* Translation lock pointer */ +#define SCHIZO_IOMMU_CTRL_TSBSZ 0x0000000000070000UL /* TSB Size */ +#define SCHIZO_IOMMU_TSBSZ_1K 0x0000000000000000UL /* TSB Table 1024 8-byte entries */ +#define SCHIZO_IOMMU_TSBSZ_2K 0x0000000000010000UL /* TSB Table 2048 8-byte entries */ +#define SCHIZO_IOMMU_TSBSZ_4K 0x0000000000020000UL /* TSB Table 4096 8-byte entries */ +#define SCHIZO_IOMMU_TSBSZ_8K 0x0000000000030000UL /* TSB Table 8192 8-byte entries */ +#define SCHIZO_IOMMU_TSBSZ_16K 0x0000000000040000UL /* TSB Table 16k 8-byte entries */ +#define SCHIZO_IOMMU_TSBSZ_32K 0x0000000000050000UL /* TSB Table 32k 8-byte entries */ +#define SCHIZO_IOMMU_TSBSZ_64K 0x0000000000060000UL /* TSB Table 64k 8-byte entries */ +#define SCHIZO_IOMMU_TSBSZ_128K 0x0000000000070000UL /* TSB Table 128k 8-byte entries */ +#define SCHIZO_IOMMU_CTRL_RESV2 0x000000000000fff8UL /* Reserved */ +#define SCHIZO_IOMMU_CTRL_TBWSZ 0x0000000000000004UL /* Assumed page size, 0=8k 1=64k */ +#define SCHIZO_IOMMU_CTRL_DENAB 0x0000000000000002UL /* Diagnostic mode enable */ +#define SCHIZO_IOMMU_CTRL_ENAB 0x0000000000000001UL /* IOMMU Enable */ + +/* Schizo config space address format is nearly identical to + * that of PSYCHO: + * + * 32 24 23 16 15 11 10 8 7 2 1 0 + * --------------------------------------------------------- + * |0 0 0 0 0 0 0 0 0| bus | device | function | reg | 0 0 | + * --------------------------------------------------------- + */ +#define SCHIZO_CONFIG_BASE(PBM) ((PBM)->config_space) +#define SCHIZO_CONFIG_ENCODE(BUS, DEVFN, REG) \ + (((unsigned long)(BUS) << 16) | \ + ((unsigned long)(DEVFN) << 8) | \ + ((unsigned long)(REG))) + +static void *schizo_pci_config_mkaddr(struct pci_pbm_info *pbm, + unsigned char bus, + unsigned int devfn, + int where) +{ + if (!pbm) + return NULL; + bus -= pbm->pci_first_busno; + return (void *) + (SCHIZO_CONFIG_BASE(pbm) | + SCHIZO_CONFIG_ENCODE(bus, devfn, where)); +} + +/* Just make sure the bus number is in range. */ +static int schizo_out_of_range(struct pci_pbm_info *pbm, + unsigned char bus, + unsigned char devfn) +{ + if (bus < pbm->pci_first_busno || + bus > pbm->pci_last_busno) + return 1; + return 0; +} + +/* SCHIZO PCI configuration space accessors. */ + +static int schizo_read_pci_cfg(struct pci_bus *bus_dev, unsigned int devfn, + int where, int size, u32 *value) +{ + struct pci_pbm_info *pbm = bus_dev->sysdata; + unsigned char bus = bus_dev->number; + u32 *addr; + u16 tmp16; + u8 tmp8; + + switch (size) { + case 1: + *value = 0xff; + break; + case 2: + *value = 0xffff; + break; + case 4: + *value = 0xffffffff; + break; + } + + addr = schizo_pci_config_mkaddr(pbm, bus, devfn, where); + if (!addr) + return PCIBIOS_SUCCESSFUL; + + if (schizo_out_of_range(pbm, bus, devfn)) + return PCIBIOS_SUCCESSFUL; + switch (size) { + case 1: + pci_config_read8((u8 *)addr, &tmp8); + *value = tmp8; + break; + + case 2: + if (where & 0x01) { + printk("pci_read_config_word: misaligned reg [%x]\n", + where); + return PCIBIOS_SUCCESSFUL; + } + pci_config_read16((u16 *)addr, &tmp16); + *value = tmp16; + break; + + case 4: + if (where & 0x03) { + printk("pci_read_config_dword: misaligned reg [%x]\n", + where); + return PCIBIOS_SUCCESSFUL; + } + pci_config_read32(addr, value); + break; + } + return PCIBIOS_SUCCESSFUL; +} + +static int schizo_write_pci_cfg(struct pci_bus *bus_dev, unsigned int devfn, + int where, int size, u32 value) +{ + struct pci_pbm_info *pbm = bus_dev->sysdata; + unsigned char bus = bus_dev->number; + u32 *addr; + + addr = schizo_pci_config_mkaddr(pbm, bus, devfn, where); + if (!addr) + return PCIBIOS_SUCCESSFUL; + + if (schizo_out_of_range(pbm, bus, devfn)) + return PCIBIOS_SUCCESSFUL; + + switch (size) { + case 1: + pci_config_write8((u8 *)addr, value); + break; + + case 2: + if (where & 0x01) { + printk("pci_write_config_word: misaligned reg [%x]\n", + where); + return PCIBIOS_SUCCESSFUL; + } + pci_config_write16((u16 *)addr, value); + break; + + case 4: + if (where & 0x03) { + printk("pci_write_config_dword: misaligned reg [%x]\n", + where); + return PCIBIOS_SUCCESSFUL; + } + + pci_config_write32(addr, value); + } + return PCIBIOS_SUCCESSFUL; +} + +static struct pci_ops schizo_ops = { + .read = schizo_read_pci_cfg, + .write = schizo_write_pci_cfg, +}; + +/* SCHIZO interrupt mapping support. Unlike Psycho, for this controller the + * imap/iclr registers are per-PBM. + */ +#define SCHIZO_IMAP_BASE 0x1000UL +#define SCHIZO_ICLR_BASE 0x1400UL + +static unsigned long schizo_imap_offset(unsigned long ino) +{ + return SCHIZO_IMAP_BASE + (ino * 8UL); +} + +static unsigned long schizo_iclr_offset(unsigned long ino) +{ + return SCHIZO_ICLR_BASE + (ino * 8UL); +} + +/* PCI SCHIZO INO number to Sparc PIL level. This table only matters for + * INOs which will not have an associated PCI device struct, ie. onboard + * EBUS devices and PCI controller internal error interrupts. + */ +static unsigned char schizo_pil_table[] = { +/*0x00*/0, 0, 0, 0, /* PCI slot 0 Int A, B, C, D */ +/*0x04*/0, 0, 0, 0, /* PCI slot 1 Int A, B, C, D */ +/*0x08*/0, 0, 0, 0, /* PCI slot 2 Int A, B, C, D */ +/*0x0c*/0, 0, 0, 0, /* PCI slot 3 Int A, B, C, D */ +/*0x10*/0, 0, 0, 0, /* PCI slot 4 Int A, B, C, D */ +/*0x14*/0, 0, 0, 0, /* PCI slot 5 Int A, B, C, D */ +/*0x18*/4, /* SCSI */ +/*0x19*/4, /* second SCSI */ +/*0x1a*/0, /* UNKNOWN */ +/*0x1b*/0, /* UNKNOWN */ +/*0x1c*/8, /* Parallel */ +/*0x1d*/5, /* Ethernet */ +/*0x1e*/8, /* Firewire-1394 */ +/*0x1f*/9, /* USB */ +/*0x20*/13, /* Audio Record */ +/*0x21*/14, /* Audio Playback */ +/*0x22*/12, /* Serial */ +/*0x23*/4, /* EBUS I2C */ +/*0x24*/10, /* RTC Clock */ +/*0x25*/11, /* Floppy */ +/*0x26*/0, /* UNKNOWN */ +/*0x27*/0, /* UNKNOWN */ +/*0x28*/0, /* UNKNOWN */ +/*0x29*/0, /* UNKNOWN */ +/*0x2a*/10, /* UPA 1 */ +/*0x2b*/10, /* UPA 2 */ +/*0x2c*/0, /* UNKNOWN */ +/*0x2d*/0, /* UNKNOWN */ +/*0x2e*/0, /* UNKNOWN */ +/*0x2f*/0, /* UNKNOWN */ +/*0x30*/15, /* Uncorrectable ECC */ +/*0x31*/15, /* Correctable ECC */ +/*0x32*/15, /* PCI Bus A Error */ +/*0x33*/15, /* PCI Bus B Error */ +/*0x34*/15, /* Safari Bus Error */ +/*0x35*/0, /* Reserved */ +/*0x36*/0, /* Reserved */ +/*0x37*/0, /* Reserved */ +/*0x38*/0, /* Reserved for NewLink */ +/*0x39*/0, /* Reserved for NewLink */ +/*0x3a*/0, /* Reserved for NewLink */ +/*0x3b*/0, /* Reserved for NewLink */ +/*0x3c*/0, /* Reserved for NewLink */ +/*0x3d*/0, /* Reserved for NewLink */ +/*0x3e*/0, /* Reserved for NewLink */ +/*0x3f*/0, /* Reserved for NewLink */ +}; + +static int __init schizo_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 = schizo_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 schizo_irq_build(struct pci_pbm_info *pbm, + struct pci_dev *pdev, + unsigned int ino) +{ + struct ino_bucket *bucket; + unsigned long imap, iclr; + unsigned long imap_off, iclr_off; + int pil, ign_fixup; + + ino &= PCI_IRQ_INO; + imap_off = schizo_imap_offset(ino); + + /* Now build the IRQ bucket. */ + pil = schizo_ino_to_pil(pdev, ino); + + if (PIL_RESERVED(pil)) + BUG(); + + imap = pbm->pbm_regs + imap_off; + imap += 4; + + iclr_off = schizo_iclr_offset(ino); + iclr = pbm->pbm_regs + iclr_off; + iclr += 4; + + /* On Schizo, no inofixup occurs. This is because each + * INO has it's own IMAP register. On Psycho and Sabre + * there is only one IMAP register for each PCI slot even + * though four different INOs can be generated by each + * PCI slot. + * + * But, for JBUS variants (essentially, Tomatillo), we have + * to fixup the lowest bit of the interrupt group number. + */ + ign_fixup = 0; + if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO) { + if (pbm->portid & 1) + ign_fixup = (1 << 6); + } + + bucket = __bucket(build_irq(pil, ign_fixup, iclr, imap)); + bucket->flags |= IBF_PCI; + + return __irq(bucket); +} + +/* SCHIZO error handling support. */ +enum schizo_error_type { + UE_ERR, CE_ERR, PCI_ERR, SAFARI_ERR +}; + +static DEFINE_SPINLOCK(stc_buf_lock); +static unsigned long stc_error_buf[128]; +static unsigned long stc_tag_buf[16]; +static unsigned long stc_line_buf[16]; + +#define SCHIZO_UE_INO 0x30 /* Uncorrectable ECC error */ +#define SCHIZO_CE_INO 0x31 /* Correctable ECC error */ +#define SCHIZO_PCIERR_A_INO 0x32 /* PBM A PCI bus error */ +#define SCHIZO_PCIERR_B_INO 0x33 /* PBM B PCI bus error */ +#define SCHIZO_SERR_INO 0x34 /* Safari interface error */ + +struct pci_pbm_info *pbm_for_ino(struct pci_controller_info *p, u32 ino) +{ + ino &= IMAP_INO; + if (p->pbm_A.ino_bitmap & (1UL << ino)) + return &p->pbm_A; + if (p->pbm_B.ino_bitmap & (1UL << ino)) + return &p->pbm_B; + + printk("PCI%d: No ino_bitmap entry for ino[%x], bitmaps " + "PBM_A[%016lx] PBM_B[%016lx]", + p->index, ino, + p->pbm_A.ino_bitmap, + p->pbm_B.ino_bitmap); + printk("PCI%d: Using PBM_A, report this problem immediately.\n", + p->index); + + return &p->pbm_A; +} + +static void schizo_clear_other_err_intr(struct pci_controller_info *p, int irq) +{ + struct pci_pbm_info *pbm; + struct ino_bucket *bucket; + unsigned long iclr; + + /* Do not clear the interrupt for the other PCI bus. + * + * This "ACK both PBM IRQs" only needs to be performed + * for chip-wide error interrupts. + */ + if ((irq & IMAP_INO) == SCHIZO_PCIERR_A_INO || + (irq & IMAP_INO) == SCHIZO_PCIERR_B_INO) + return; + + pbm = pbm_for_ino(p, irq); + if (pbm == &p->pbm_A) + pbm = &p->pbm_B; + else + pbm = &p->pbm_A; + + irq = schizo_irq_build(pbm, NULL, + (pbm->portid << 6) | (irq & IMAP_INO)); + bucket = __bucket(irq); + iclr = bucket->iclr; + + upa_writel(ICLR_IDLE, iclr); +} + +#define SCHIZO_STC_ERR 0xb800UL /* --> 0xba00 */ +#define SCHIZO_STC_TAG 0xba00UL /* --> 0xba80 */ +#define SCHIZO_STC_LINE 0xbb00UL /* --> 0xbb80 */ + +#define SCHIZO_STCERR_WRITE 0x2UL +#define SCHIZO_STCERR_READ 0x1UL + +#define SCHIZO_STCTAG_PPN 0x3fffffff00000000UL +#define SCHIZO_STCTAG_VPN 0x00000000ffffe000UL +#define SCHIZO_STCTAG_VALID 0x8000000000000000UL +#define SCHIZO_STCTAG_READ 0x4000000000000000UL + +#define SCHIZO_STCLINE_LINDX 0x0000000007800000UL +#define SCHIZO_STCLINE_SPTR 0x000000000007e000UL +#define SCHIZO_STCLINE_LADDR 0x0000000000001fc0UL +#define SCHIZO_STCLINE_EPTR 0x000000000000003fUL +#define SCHIZO_STCLINE_VALID 0x0000000000600000UL +#define SCHIZO_STCLINE_FOFN 0x0000000000180000UL + +static void __schizo_check_stc_error_pbm(struct pci_pbm_info *pbm, + enum schizo_error_type type) +{ + struct pci_strbuf *strbuf = &pbm->stc; + unsigned long regbase = pbm->pbm_regs; + unsigned long err_base, tag_base, line_base; + u64 control; + int i; + + err_base = regbase + SCHIZO_STC_ERR; + tag_base = regbase + SCHIZO_STC_TAG; + line_base = regbase + SCHIZO_STC_LINE; + + spin_lock(&stc_buf_lock); + + /* This is __REALLY__ dangerous. When we put the + * streaming buffer into diagnostic mode to probe + * it's tags and error status, we _must_ clear all + * of the line tag valid bits before re-enabling + * the streaming buffer. If any dirty data lives + * in the STC when we do this, we will end up + * invalidating it before it has a chance to reach + * main memory. + */ + control = schizo_read(strbuf->strbuf_control); + schizo_write(strbuf->strbuf_control, + (control | SCHIZO_STRBUF_CTRL_DENAB)); + for (i = 0; i < 128; i++) { + unsigned long val; + + val = schizo_read(err_base + (i * 8UL)); + schizo_write(err_base + (i * 8UL), 0UL); + stc_error_buf[i] = val; + } + for (i = 0; i < 16; i++) { + stc_tag_buf[i] = schizo_read(tag_base + (i * 8UL)); + stc_line_buf[i] = schizo_read(line_base + (i * 8UL)); + schizo_write(tag_base + (i * 8UL), 0UL); + schizo_write(line_base + (i * 8UL), 0UL); + } + + /* OK, state is logged, exit diagnostic mode. */ + schizo_write(strbuf->strbuf_control, control); + + for (i = 0; i < 16; i++) { + int j, saw_error, first, last; + + saw_error = 0; + first = i * 8; + last = first + 8; + for (j = first; j < last; j++) { + unsigned long errval = stc_error_buf[j]; + if (errval != 0) { + saw_error++; + printk("%s: STC_ERR(%d)[wr(%d)rd(%d)]\n", + pbm->name, + j, + (errval & SCHIZO_STCERR_WRITE) ? 1 : 0, + (errval & SCHIZO_STCERR_READ) ? 1 : 0); + } + } + if (saw_error != 0) { + unsigned long tagval = stc_tag_buf[i]; + unsigned long lineval = stc_line_buf[i]; + printk("%s: STC_TAG(%d)[PA(%016lx)VA(%08lx)V(%d)R(%d)]\n", + pbm->name, + i, + ((tagval & SCHIZO_STCTAG_PPN) >> 19UL), + (tagval & SCHIZO_STCTAG_VPN), + ((tagval & SCHIZO_STCTAG_VALID) ? 1 : 0), + ((tagval & SCHIZO_STCTAG_READ) ? 1 : 0)); + + /* XXX Should spit out per-bank error information... -DaveM */ + printk("%s: STC_LINE(%d)[LIDX(%lx)SP(%lx)LADDR(%lx)EP(%lx)" + "V(%d)FOFN(%d)]\n", + pbm->name, + i, + ((lineval & SCHIZO_STCLINE_LINDX) >> 23UL), + ((lineval & SCHIZO_STCLINE_SPTR) >> 13UL), + ((lineval & SCHIZO_STCLINE_LADDR) >> 6UL), + ((lineval & SCHIZO_STCLINE_EPTR) >> 0UL), + ((lineval & SCHIZO_STCLINE_VALID) ? 1 : 0), + ((lineval & SCHIZO_STCLINE_FOFN) ? 1 : 0)); + } + } + + spin_unlock(&stc_buf_lock); +} + +/* IOMMU is per-PBM in Schizo, so interrogate both for anonymous + * controller level errors. + */ + +#define SCHIZO_IOMMU_TAG 0xa580UL +#define SCHIZO_IOMMU_DATA 0xa600UL + +#define SCHIZO_IOMMU_TAG_CTXT 0x0000001ffe000000UL +#define SCHIZO_IOMMU_TAG_ERRSTS 0x0000000001800000UL +#define SCHIZO_IOMMU_TAG_ERR 0x0000000000400000UL +#define SCHIZO_IOMMU_TAG_WRITE 0x0000000000200000UL +#define SCHIZO_IOMMU_TAG_STREAM 0x0000000000100000UL +#define SCHIZO_IOMMU_TAG_SIZE 0x0000000000080000UL +#define SCHIZO_IOMMU_TAG_VPAGE 0x000000000007ffffUL + +#define SCHIZO_IOMMU_DATA_VALID 0x0000000100000000UL +#define SCHIZO_IOMMU_DATA_CACHE 0x0000000040000000UL +#define SCHIZO_IOMMU_DATA_PPAGE 0x000000003fffffffUL + +static void schizo_check_iommu_error_pbm(struct pci_pbm_info *pbm, + enum schizo_error_type type) +{ + struct pci_iommu *iommu = pbm->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 = schizo_read(iommu->iommu_control); + if (control & SCHIZO_IOMMU_CTRL_XLTEERR) { + unsigned long base; + char *type_string; + + /* Clear the error encountered bit. */ + control &= ~SCHIZO_IOMMU_CTRL_XLTEERR; + schizo_write(iommu->iommu_control, control); + + switch((control & SCHIZO_IOMMU_CTRL_XLTESTAT) >> 25UL) { + case 0: + type_string = "Protection Error"; + break; + case 1: + type_string = "Invalid Error"; + break; + case 2: + type_string = "TimeOut Error"; + break; + case 3: + default: + type_string = "ECC Error"; + break; + }; + printk("%s: IOMMU Error, type[%s]\n", + pbm->name, type_string); + + /* Put the IOMMU into diagnostic mode and probe + * it's TLB for entries with error status. + * + * It is very possible for another DVMA to occur + * while we do this probe, and corrupt the system + * further. But we are so screwed at this point + * that we are likely to crash hard anyways, so + * get as much diagnostic information to the + * console as we can. + */ + schizo_write(iommu->iommu_control, + control | SCHIZO_IOMMU_CTRL_DENAB); + + base = pbm->pbm_regs; + + for (i = 0; i < 16; i++) { + iommu_tag[i] = + schizo_read(base + SCHIZO_IOMMU_TAG + (i * 8UL)); + iommu_data[i] = + schizo_read(base + SCHIZO_IOMMU_DATA + (i * 8UL)); + + /* Now clear out the entry. */ + schizo_write(base + SCHIZO_IOMMU_TAG + (i * 8UL), 0); + schizo_write(base + SCHIZO_IOMMU_DATA + (i * 8UL), 0); + } + + /* Leave diagnostic mode. */ + schizo_write(iommu->iommu_control, control); + + for (i = 0; i < 16; i++) { + unsigned long tag, data; + + tag = iommu_tag[i]; + if (!(tag & SCHIZO_IOMMU_TAG_ERR)) + continue; + + data = iommu_data[i]; + switch((tag & SCHIZO_IOMMU_TAG_ERRSTS) >> 23UL) { + case 0: + type_string = "Protection Error"; + break; + case 1: + type_string = "Invalid Error"; + break; + case 2: + type_string = "TimeOut Error"; + break; + case 3: + default: + type_string = "ECC Error"; + break; + }; + printk("%s: IOMMU TAG(%d)[error(%s) ctx(%x) wr(%d) str(%d) " + "sz(%dK) vpg(%08lx)]\n", + pbm->name, i, type_string, + (int)((tag & SCHIZO_IOMMU_TAG_CTXT) >> 25UL), + ((tag & SCHIZO_IOMMU_TAG_WRITE) ? 1 : 0), + ((tag & SCHIZO_IOMMU_TAG_STREAM) ? 1 : 0), + ((tag & SCHIZO_IOMMU_TAG_SIZE) ? 64 : 8), + (tag & SCHIZO_IOMMU_TAG_VPAGE) << IOMMU_PAGE_SHIFT); + printk("%s: IOMMU DATA(%d)[valid(%d) cache(%d) ppg(%016lx)]\n", + pbm->name, i, + ((data & SCHIZO_IOMMU_DATA_VALID) ? 1 : 0), + ((data & SCHIZO_IOMMU_DATA_CACHE) ? 1 : 0), + (data & SCHIZO_IOMMU_DATA_PPAGE) << IOMMU_PAGE_SHIFT); + } + } + if (pbm->stc.strbuf_enabled) + __schizo_check_stc_error_pbm(pbm, type); + spin_unlock_irqrestore(&iommu->lock, flags); +} + +static void schizo_check_iommu_error(struct pci_controller_info *p, + enum schizo_error_type type) +{ + schizo_check_iommu_error_pbm(&p->pbm_A, type); + schizo_check_iommu_error_pbm(&p->pbm_B, type); +} + +/* Uncorrectable ECC error status gathering. */ +#define SCHIZO_UE_AFSR 0x10030UL +#define SCHIZO_UE_AFAR 0x10038UL + +#define SCHIZO_UEAFSR_PPIO 0x8000000000000000UL /* Safari */ +#define SCHIZO_UEAFSR_PDRD 0x4000000000000000UL /* Safari/Tomatillo */ +#define SCHIZO_UEAFSR_PDWR 0x2000000000000000UL /* Safari */ +#define SCHIZO_UEAFSR_SPIO 0x1000000000000000UL /* Safari */ +#define SCHIZO_UEAFSR_SDMA 0x0800000000000000UL /* Safari/Tomatillo */ +#define SCHIZO_UEAFSR_ERRPNDG 0x0300000000000000UL /* Safari */ +#define SCHIZO_UEAFSR_BMSK 0x000003ff00000000UL /* Safari */ +#define SCHIZO_UEAFSR_QOFF 0x00000000c0000000UL /* Safari/Tomatillo */ +#define SCHIZO_UEAFSR_AID 0x000000001f000000UL /* Safari/Tomatillo */ +#define SCHIZO_UEAFSR_PARTIAL 0x0000000000800000UL /* Safari */ +#define SCHIZO_UEAFSR_OWNEDIN 0x0000000000400000UL /* Safari */ +#define SCHIZO_UEAFSR_MTAGSYND 0x00000000000f0000UL /* Safari */ +#define SCHIZO_UEAFSR_MTAG 0x000000000000e000UL /* Safari */ +#define SCHIZO_UEAFSR_ECCSYND 0x00000000000001ffUL /* Safari */ + +static irqreturn_t schizo_ue_intr(int irq, void *dev_id, struct pt_regs *regs) +{ + struct pci_controller_info *p = dev_id; + unsigned long afsr_reg = p->pbm_B.controller_regs + SCHIZO_UE_AFSR; + unsigned long afar_reg = p->pbm_B.controller_regs + SCHIZO_UE_AFAR; + unsigned long afsr, afar, error_bits; + int reported, limit; + + /* Latch uncorrectable error status. */ + afar = schizo_read(afar_reg); + + /* If either of the error pending bits are set in the + * AFSR, the error status is being actively updated by + * the hardware and we must re-read to get a clean value. + */ + limit = 1000; + do { + afsr = schizo_read(afsr_reg); + } while ((afsr & SCHIZO_UEAFSR_ERRPNDG) != 0 && --limit); + + /* Clear the primary/secondary error status bits. */ + error_bits = afsr & + (SCHIZO_UEAFSR_PPIO | SCHIZO_UEAFSR_PDRD | SCHIZO_UEAFSR_PDWR | + SCHIZO_UEAFSR_SPIO | SCHIZO_UEAFSR_SDMA); + if (!error_bits) + return IRQ_NONE; + schizo_write(afsr_reg, error_bits); + + /* Log the error. */ + printk("PCI%d: Uncorrectable Error, primary error type[%s]\n", + p->index, + (((error_bits & SCHIZO_UEAFSR_PPIO) ? + "PIO" : + ((error_bits & SCHIZO_UEAFSR_PDRD) ? + "DMA Read" : + ((error_bits & SCHIZO_UEAFSR_PDWR) ? + "DMA Write" : "???"))))); + printk("PCI%d: bytemask[%04lx] qword_offset[%lx] SAFARI_AID[%02lx]\n", + p->index, + (afsr & SCHIZO_UEAFSR_BMSK) >> 32UL, + (afsr & SCHIZO_UEAFSR_QOFF) >> 30UL, + (afsr & SCHIZO_UEAFSR_AID) >> 24UL); + printk("PCI%d: partial[%d] owned_in[%d] mtag[%lx] mtag_synd[%lx] ecc_sync[%lx]\n", + p->index, + (afsr & SCHIZO_UEAFSR_PARTIAL) ? 1 : 0, + (afsr & SCHIZO_UEAFSR_OWNEDIN) ? 1 : 0, + (afsr & SCHIZO_UEAFSR_MTAG) >> 13UL, + (afsr & SCHIZO_UEAFSR_MTAGSYND) >> 16UL, + (afsr & SCHIZO_UEAFSR_ECCSYND) >> 0UL); + printk("PCI%d: UE AFAR [%016lx]\n", p->index, afar); + printk("PCI%d: UE Secondary errors [", p->index); + reported = 0; + if (afsr & SCHIZO_UEAFSR_SPIO) { + reported++; + printk("(PIO)"); + } + if (afsr & SCHIZO_UEAFSR_SDMA) { + reported++; + printk("(DMA)"); + } + if (!reported) + printk("(none)"); + printk("]\n"); + + /* Interrogate IOMMU for error status. */ + schizo_check_iommu_error(p, UE_ERR); + + schizo_clear_other_err_intr(p, irq); + + return IRQ_HANDLED; +} + +#define SCHIZO_CE_AFSR 0x10040UL +#define SCHIZO_CE_AFAR 0x10048UL + +#define SCHIZO_CEAFSR_PPIO 0x8000000000000000UL +#define SCHIZO_CEAFSR_PDRD 0x4000000000000000UL +#define SCHIZO_CEAFSR_PDWR 0x2000000000000000UL +#define SCHIZO_CEAFSR_SPIO 0x1000000000000000UL +#define SCHIZO_CEAFSR_SDMA 0x0800000000000000UL +#define SCHIZO_CEAFSR_ERRPNDG 0x0300000000000000UL +#define SCHIZO_CEAFSR_BMSK 0x000003ff00000000UL +#define SCHIZO_CEAFSR_QOFF 0x00000000c0000000UL +#define SCHIZO_CEAFSR_AID 0x000000001f000000UL +#define SCHIZO_CEAFSR_PARTIAL 0x0000000000800000UL +#define SCHIZO_CEAFSR_OWNEDIN 0x0000000000400000UL +#define SCHIZO_CEAFSR_MTAGSYND 0x00000000000f0000UL +#define SCHIZO_CEAFSR_MTAG 0x000000000000e000UL +#define SCHIZO_CEAFSR_ECCSYND 0x00000000000001ffUL + +static irqreturn_t schizo_ce_intr(int irq, void *dev_id, struct pt_regs *regs) +{ + struct pci_controller_info *p = dev_id; + unsigned long afsr_reg = p->pbm_B.controller_regs + SCHIZO_CE_AFSR; + unsigned long afar_reg = p->pbm_B.controller_regs + SCHIZO_CE_AFAR; + unsigned long afsr, afar, error_bits; + int reported, limit; + + /* Latch error status. */ + afar = schizo_read(afar_reg); + + /* If either of the error pending bits are set in the + * AFSR, the error status is being actively updated by + * the hardware and we must re-read to get a clean value. + */ + limit = 1000; + do { + afsr = schizo_read(afsr_reg); + } while ((afsr & SCHIZO_UEAFSR_ERRPNDG) != 0 && --limit); + + /* Clear primary/secondary error status bits. */ + error_bits = afsr & + (SCHIZO_CEAFSR_PPIO | SCHIZO_CEAFSR_PDRD | SCHIZO_CEAFSR_PDWR | + SCHIZO_CEAFSR_SPIO | SCHIZO_CEAFSR_SDMA); + if (!error_bits) + return IRQ_NONE; + schizo_write(afsr_reg, error_bits); + + /* Log the error. */ + printk("PCI%d: Correctable Error, primary error type[%s]\n", + p->index, + (((error_bits & SCHIZO_CEAFSR_PPIO) ? + "PIO" : + ((error_bits & SCHIZO_CEAFSR_PDRD) ? + "DMA Read" : + ((error_bits & SCHIZO_CEAFSR_PDWR) ? + "DMA Write" : "???"))))); + + /* XXX Use syndrome and afar to print out module string just like + * XXX UDB CE trap handler does... -DaveM + */ + printk("PCI%d: bytemask[%04lx] qword_offset[%lx] SAFARI_AID[%02lx]\n", + p->index, + (afsr & SCHIZO_UEAFSR_BMSK) >> 32UL, + (afsr & SCHIZO_UEAFSR_QOFF) >> 30UL, + (afsr & SCHIZO_UEAFSR_AID) >> 24UL); + printk("PCI%d: partial[%d] owned_in[%d] mtag[%lx] mtag_synd[%lx] ecc_sync[%lx]\n", + p->index, + (afsr & SCHIZO_UEAFSR_PARTIAL) ? 1 : 0, + (afsr & SCHIZO_UEAFSR_OWNEDIN) ? 1 : 0, + (afsr & SCHIZO_UEAFSR_MTAG) >> 13UL, + (afsr & SCHIZO_UEAFSR_MTAGSYND) >> 16UL, + (afsr & SCHIZO_UEAFSR_ECCSYND) >> 0UL); + printk("PCI%d: CE AFAR [%016lx]\n", p->index, afar); + printk("PCI%d: CE Secondary errors [", p->index); + reported = 0; + if (afsr & SCHIZO_CEAFSR_SPIO) { + reported++; + printk("(PIO)"); + } + if (afsr & SCHIZO_CEAFSR_SDMA) { + reported++; + printk("(DMA)"); + } + if (!reported) + printk("(none)"); + printk("]\n"); + + schizo_clear_other_err_intr(p, irq); + + return IRQ_HANDLED; +} + +#define SCHIZO_PCI_AFSR 0x2010UL +#define SCHIZO_PCI_AFAR 0x2018UL + +#define SCHIZO_PCIAFSR_PMA 0x8000000000000000UL /* Schizo/Tomatillo */ +#define SCHIZO_PCIAFSR_PTA 0x4000000000000000UL /* Schizo/Tomatillo */ +#define SCHIZO_PCIAFSR_PRTRY 0x2000000000000000UL /* Schizo/Tomatillo */ +#define SCHIZO_PCIAFSR_PPERR 0x1000000000000000UL /* Schizo/Tomatillo */ +#define SCHIZO_PCIAFSR_PTTO 0x0800000000000000UL /* Schizo/Tomatillo */ +#define SCHIZO_PCIAFSR_PUNUS 0x0400000000000000UL /* Schizo */ +#define SCHIZO_PCIAFSR_SMA 0x0200000000000000UL /* Schizo/Tomatillo */ +#define SCHIZO_PCIAFSR_STA 0x0100000000000000UL /* Schizo/Tomatillo */ +#define SCHIZO_PCIAFSR_SRTRY 0x0080000000000000UL /* Schizo/Tomatillo */ +#define SCHIZO_PCIAFSR_SPERR 0x0040000000000000UL /* Schizo/Tomatillo */ +#define SCHIZO_PCIAFSR_STTO 0x0020000000000000UL /* Schizo/Tomatillo */ +#define SCHIZO_PCIAFSR_SUNUS 0x0010000000000000UL /* Schizo */ +#define SCHIZO_PCIAFSR_BMSK 0x000003ff00000000UL /* Schizo/Tomatillo */ +#define SCHIZO_PCIAFSR_BLK 0x0000000080000000UL /* Schizo/Tomatillo */ +#define SCHIZO_PCIAFSR_CFG 0x0000000040000000UL /* Schizo/Tomatillo */ +#define SCHIZO_PCIAFSR_MEM 0x0000000020000000UL /* Schizo/Tomatillo */ +#define SCHIZO_PCIAFSR_IO 0x0000000010000000UL /* Schizo/Tomatillo */ + +#define SCHIZO_PCI_CTRL (0x2000UL) +#define SCHIZO_PCICTRL_BUS_UNUS (1UL << 63UL) /* Safari */ +#define SCHIZO_PCICTRL_ARB_PRIO (0x1ff << 52UL) /* Tomatillo */ +#define SCHIZO_PCICTRL_ESLCK (1UL << 51UL) /* Safari */ +#define SCHIZO_PCICTRL_ERRSLOT (7UL << 48UL) /* Safari */ +#define SCHIZO_PCICTRL_TTO_ERR (1UL << 38UL) /* Safari/Tomatillo */ +#define SCHIZO_PCICTRL_RTRY_ERR (1UL << 37UL) /* Safari/Tomatillo */ +#define SCHIZO_PCICTRL_DTO_ERR (1UL << 36UL) /* Safari/Tomatillo */ +#define SCHIZO_PCICTRL_SBH_ERR (1UL << 35UL) /* Safari */ +#define SCHIZO_PCICTRL_SERR (1UL << 34UL) /* Safari/Tomatillo */ +#define SCHIZO_PCICTRL_PCISPD (1UL << 33UL) /* Safari */ +#define SCHIZO_PCICTRL_MRM_PREF (1UL << 30UL) /* Tomatillo */ +#define SCHIZO_PCICTRL_RDO_PREF (1UL << 29UL) /* Tomatillo */ +#define SCHIZO_PCICTRL_RDL_PREF (1UL << 28UL) /* Tomatillo */ +#define SCHIZO_PCICTRL_PTO (3UL << 24UL) /* Safari/Tomatillo */ +#define SCHIZO_PCICTRL_PTO_SHIFT 24UL +#define SCHIZO_PCICTRL_TRWSW (7UL << 21UL) /* Tomatillo */ +#define SCHIZO_PCICTRL_F_TGT_A (1UL << 20UL) /* Tomatillo */ +#define SCHIZO_PCICTRL_S_DTO_INT (1UL << 19UL) /* Safari */ +#define SCHIZO_PCICTRL_F_TGT_RT (1UL << 19UL) /* Tomatillo */ +#define SCHIZO_PCICTRL_SBH_INT (1UL << 18UL) /* Safari */ +#define SCHIZO_PCICTRL_T_DTO_INT (1UL << 18UL) /* Tomatillo */ +#define SCHIZO_PCICTRL_EEN (1UL << 17UL) /* Safari/Tomatillo */ +#define SCHIZO_PCICTRL_PARK (1UL << 16UL) /* Safari/Tomatillo */ +#define SCHIZO_PCICTRL_PCIRST (1UL << 8UL) /* Safari */ +#define SCHIZO_PCICTRL_ARB_S (0x3fUL << 0UL) /* Safari */ +#define SCHIZO_PCICTRL_ARB_T (0xffUL << 0UL) /* Tomatillo */ + +static irqreturn_t schizo_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 = pbm->pbm_regs + SCHIZO_PCI_CTRL; + csr = schizo_read(csr_reg); + csr_error_bits = + csr & (SCHIZO_PCICTRL_BUS_UNUS | + SCHIZO_PCICTRL_TTO_ERR | + SCHIZO_PCICTRL_RTRY_ERR | + SCHIZO_PCICTRL_DTO_ERR | + SCHIZO_PCICTRL_SBH_ERR | + SCHIZO_PCICTRL_SERR); + if (csr_error_bits) { + /* Clear the errors. */ + schizo_write(csr_reg, csr); + + /* Log 'em. */ + if (csr_error_bits & SCHIZO_PCICTRL_BUS_UNUS) + printk("%s: Bus unusable error asserted.\n", + pbm->name); + if (csr_error_bits & SCHIZO_PCICTRL_TTO_ERR) + printk("%s: PCI TRDY# timeout error asserted.\n", + pbm->name); + if (csr_error_bits & SCHIZO_PCICTRL_RTRY_ERR) + printk("%s: PCI excessive retry error asserted.\n", + pbm->name); + if (csr_error_bits & SCHIZO_PCICTRL_DTO_ERR) + printk("%s: PCI discard timeout error asserted.\n", + pbm->name); + if (csr_error_bits & SCHIZO_PCICTRL_SBH_ERR) + printk("%s: PCI streaming byte hole error asserted.\n", + pbm->name); + if (csr_error_bits & SCHIZO_PCICTRL_SERR) + printk("%s: PCI SERR signal asserted.\n", + pbm->name); + ret = IRQ_HANDLED; + } + pci_read_config_word(pbm->pci_bus->self, PCI_STATUS, &stat); + if (stat & (PCI_STATUS_PARITY | + PCI_STATUS_SIG_TARGET_ABORT | + PCI_STATUS_REC_TARGET_ABORT | + PCI_STATUS_REC_MASTER_ABORT | + PCI_STATUS_SIG_SYSTEM_ERROR)) { + printk("%s: PCI bus error, PCI_STATUS[%04x]\n", + pbm->name, stat); + pci_write_config_word(pbm->pci_bus->self, PCI_STATUS, 0xffff); + ret = IRQ_HANDLED; + } + return ret; +} + +static irqreturn_t schizo_pcierr_intr(int irq, void *dev_id, struct pt_regs *regs) +{ + struct pci_pbm_info *pbm = dev_id; + struct pci_controller_info *p = pbm->parent; + unsigned long afsr_reg, afar_reg, base; + unsigned long afsr, afar, error_bits; + int reported; + + base = pbm->pbm_regs; + + afsr_reg = base + SCHIZO_PCI_AFSR; + afar_reg = base + SCHIZO_PCI_AFAR; + + /* Latch error status. */ + afar = schizo_read(afar_reg); + afsr = schizo_read(afsr_reg); + + /* Clear primary/secondary error status bits. */ + error_bits = afsr & + (SCHIZO_PCIAFSR_PMA | SCHIZO_PCIAFSR_PTA | + SCHIZO_PCIAFSR_PRTRY | SCHIZO_PCIAFSR_PPERR | + SCHIZO_PCIAFSR_PTTO | SCHIZO_PCIAFSR_PUNUS | + SCHIZO_PCIAFSR_SMA | SCHIZO_PCIAFSR_STA | + SCHIZO_PCIAFSR_SRTRY | SCHIZO_PCIAFSR_SPERR | + SCHIZO_PCIAFSR_STTO | SCHIZO_PCIAFSR_SUNUS); + if (!error_bits) + return schizo_pcierr_intr_other(pbm); + schizo_write(afsr_reg, error_bits); + + /* Log the error. */ + printk("%s: PCI Error, primary error type[%s]\n", + pbm->name, + (((error_bits & SCHIZO_PCIAFSR_PMA) ? + "Master Abort" : + ((error_bits & SCHIZO_PCIAFSR_PTA) ? + "Target Abort" : + ((error_bits & SCHIZO_PCIAFSR_PRTRY) ? + "Excessive Retries" : + ((error_bits & SCHIZO_PCIAFSR_PPERR) ? + "Parity Error" : + ((error_bits & SCHIZO_PCIAFSR_PTTO) ? + "Timeout" : + ((error_bits & SCHIZO_PCIAFSR_PUNUS) ? + "Bus Unusable" : "???")))))))); + printk("%s: bytemask[%04lx] was_block(%d) space(%s)\n", + pbm->name, + (afsr & SCHIZO_PCIAFSR_BMSK) >> 32UL, + (afsr & SCHIZO_PCIAFSR_BLK) ? 1 : 0, + ((afsr & SCHIZO_PCIAFSR_CFG) ? + "Config" : + ((afsr & SCHIZO_PCIAFSR_MEM) ? + "Memory" : + ((afsr & SCHIZO_PCIAFSR_IO) ? + "I/O" : "???")))); + printk("%s: PCI AFAR [%016lx]\n", + pbm->name, afar); + printk("%s: PCI Secondary errors [", + pbm->name); + reported = 0; + if (afsr & SCHIZO_PCIAFSR_SMA) { + reported++; + printk("(Master Abort)"); + } + if (afsr & SCHIZO_PCIAFSR_STA) { + reported++; + printk("(Target Abort)"); + } + if (afsr & SCHIZO_PCIAFSR_SRTRY) { + reported++; + printk("(Excessive Retries)"); + } + if (afsr & SCHIZO_PCIAFSR_SPERR) { + reported++; + printk("(Parity Error)"); + } + if (afsr & SCHIZO_PCIAFSR_STTO) { + reported++; + printk("(Timeout)"); + } + if (afsr & SCHIZO_PCIAFSR_SUNUS) { + reported++; + printk("(Bus Unusable)"); + } + if (!reported) + printk("(none)"); + printk("]\n"); + + /* For the error types shown, scan PBM's PCI bus 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 & (SCHIZO_PCIAFSR_PTA | SCHIZO_PCIAFSR_STA)) { + schizo_check_iommu_error(p, PCI_ERR); + pci_scan_for_target_abort(p, pbm, pbm->pci_bus); + } + if (error_bits & (SCHIZO_PCIAFSR_PMA | SCHIZO_PCIAFSR_SMA)) + pci_scan_for_master_abort(p, pbm, pbm->pci_bus); + + /* For excessive retries, PSYCHO/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 & (SCHIZO_PCIAFSR_PPERR | SCHIZO_PCIAFSR_SPERR)) + pci_scan_for_parity_error(p, pbm, pbm->pci_bus); + + schizo_clear_other_err_intr(p, irq); + + return IRQ_HANDLED; +} + +#define SCHIZO_SAFARI_ERRLOG 0x10018UL + +#define SAFARI_ERRLOG_ERROUT 0x8000000000000000UL + +#define BUS_ERROR_BADCMD 0x4000000000000000UL /* Schizo/Tomatillo */ +#define BUS_ERROR_SSMDIS 0x2000000000000000UL /* Safari */ +#define BUS_ERROR_BADMA 0x1000000000000000UL /* Safari */ +#define BUS_ERROR_BADMB 0x0800000000000000UL /* Safari */ +#define BUS_ERROR_BADMC 0x0400000000000000UL /* Safari */ +#define BUS_ERROR_SNOOP_GR 0x0000000000200000UL /* Tomatillo */ +#define BUS_ERROR_SNOOP_PCI 0x0000000000100000UL /* Tomatillo */ +#define BUS_ERROR_SNOOP_RD 0x0000000000080000UL /* Tomatillo */ +#define BUS_ERROR_SNOOP_RDS 0x0000000000020000UL /* Tomatillo */ +#define BUS_ERROR_SNOOP_RDSA 0x0000000000010000UL /* Tomatillo */ +#define BUS_ERROR_SNOOP_OWN 0x0000000000008000UL /* Tomatillo */ +#define BUS_ERROR_SNOOP_RDO 0x0000000000004000UL /* Tomatillo */ +#define BUS_ERROR_CPU1PS 0x0000000000002000UL /* Safari */ +#define BUS_ERROR_WDATA_PERR 0x0000000000002000UL /* Tomatillo */ +#define BUS_ERROR_CPU1PB 0x0000000000001000UL /* Safari */ +#define BUS_ERROR_CTRL_PERR 0x0000000000001000UL /* Tomatillo */ +#define BUS_ERROR_CPU0PS 0x0000000000000800UL /* Safari */ +#define BUS_ERROR_SNOOP_ERR 0x0000000000000800UL /* Tomatillo */ +#define BUS_ERROR_CPU0PB 0x0000000000000400UL /* Safari */ +#define BUS_ERROR_JBUS_ILL_B 0x0000000000000400UL /* Tomatillo */ +#define BUS_ERROR_CIQTO 0x0000000000000200UL /* Safari */ +#define BUS_ERROR_LPQTO 0x0000000000000100UL /* Safari */ +#define BUS_ERROR_JBUS_ILL_C 0x0000000000000100UL /* Tomatillo */ +#define BUS_ERROR_SFPQTO 0x0000000000000080UL /* Safari */ +#define BUS_ERROR_UFPQTO 0x0000000000000040UL /* Safari */ +#define BUS_ERROR_RD_PERR 0x0000000000000040UL /* Tomatillo */ +#define BUS_ERROR_APERR 0x0000000000000020UL /* Safari/Tomatillo */ +#define BUS_ERROR_UNMAP 0x0000000000000010UL /* Safari/Tomatillo */ +#define BUS_ERROR_BUSERR 0x0000000000000004UL /* Safari/Tomatillo */ +#define BUS_ERROR_TIMEOUT 0x0000000000000002UL /* Safari/Tomatillo */ +#define BUS_ERROR_ILL 0x0000000000000001UL /* Safari */ + +/* We only expect UNMAP errors here. The rest of the Safari errors + * are marked fatal and thus cause a system reset. + */ +static irqreturn_t schizo_safarierr_intr(int irq, void *dev_id, struct pt_regs *regs) +{ + struct pci_controller_info *p = dev_id; + u64 errlog; + + errlog = schizo_read(p->pbm_B.controller_regs + SCHIZO_SAFARI_ERRLOG); + schizo_write(p->pbm_B.controller_regs + SCHIZO_SAFARI_ERRLOG, + errlog & ~(SAFARI_ERRLOG_ERROUT)); + + if (!(errlog & BUS_ERROR_UNMAP)) { + printk("PCI%d: Unexpected Safari/JBUS error interrupt, errlog[%016lx]\n", + p->index, errlog); + + schizo_clear_other_err_intr(p, irq); + return IRQ_HANDLED; + } + + printk("PCI%d: Safari/JBUS interrupt, UNMAPPED error, interrogating IOMMUs.\n", + p->index); + schizo_check_iommu_error(p, SAFARI_ERR); + + schizo_clear_other_err_intr(p, irq); + return IRQ_HANDLED; +} + +/* Nearly identical to PSYCHO equivalents... */ +#define SCHIZO_ECC_CTRL 0x10020UL +#define SCHIZO_ECCCTRL_EE 0x8000000000000000UL /* Enable ECC Checking */ +#define SCHIZO_ECCCTRL_UE 0x4000000000000000UL /* Enable UE Interrupts */ +#define SCHIZO_ECCCTRL_CE 0x2000000000000000UL /* Enable CE INterrupts */ + +#define SCHIZO_SAFARI_ERRCTRL 0x10008UL +#define SCHIZO_SAFERRCTRL_EN 0x8000000000000000UL +#define SCHIZO_SAFARI_IRQCTRL 0x10010UL +#define SCHIZO_SAFIRQCTRL_EN 0x8000000000000000UL + +/* How the Tomatillo IRQs are routed around is pure guesswork here. + * + * All the Tomatillo devices I see in prtconf dumps seem to have only + * a single PCI bus unit attached to it. It would seem they are seperate + * devices because their PortID (ie. JBUS ID) values are all different + * and thus the registers are mapped to totally different locations. + * + * However, two Tomatillo's look "similar" in that the only difference + * in their PortID is the lowest bit. + * + * So if we were to ignore this lower bit, it certainly looks like two + * PCI bus units of the same Tomatillo. I still have not really + * figured this out... + */ +static void __init tomatillo_register_error_handlers(struct pci_controller_info *p) +{ + struct pci_pbm_info *pbm; + unsigned int irq; + struct ino_bucket *bucket; + u64 tmp, err_mask, err_no_mask; + + /* Build IRQs and register handlers. */ + pbm = pbm_for_ino(p, SCHIZO_UE_INO); + irq = schizo_irq_build(pbm, NULL, (pbm->portid << 6) | SCHIZO_UE_INO); + if (request_irq(irq, schizo_ue_intr, + SA_SHIRQ, "TOMATILLO UE", p) < 0) { + prom_printf("%s: Cannot register UE interrupt.\n", + pbm->name); + prom_halt(); + } + bucket = __bucket(irq); + tmp = upa_readl(bucket->imap); + upa_writel(tmp, (pbm->pbm_regs + + schizo_imap_offset(SCHIZO_UE_INO) + 4)); + + pbm = pbm_for_ino(p, SCHIZO_CE_INO); + irq = schizo_irq_build(pbm, NULL, (pbm->portid << 6) | SCHIZO_CE_INO); + if (request_irq(irq, schizo_ce_intr, + SA_SHIRQ, "TOMATILLO CE", p) < 0) { + prom_printf("%s: Cannot register CE interrupt.\n", + pbm->name); + prom_halt(); + } + bucket = __bucket(irq); + tmp = upa_readl(bucket->imap); + upa_writel(tmp, (pbm->pbm_regs + + schizo_imap_offset(SCHIZO_CE_INO) + 4)); + + pbm = pbm_for_ino(p, SCHIZO_PCIERR_A_INO); + irq = schizo_irq_build(pbm, NULL, ((pbm->portid << 6) | + SCHIZO_PCIERR_A_INO)); + if (request_irq(irq, schizo_pcierr_intr, + SA_SHIRQ, "TOMATILLO PCIERR", pbm) < 0) { + prom_printf("%s: Cannot register PBM A PciERR interrupt.\n", + pbm->name); + prom_halt(); + } + bucket = __bucket(irq); + tmp = upa_readl(bucket->imap); + upa_writel(tmp, (pbm->pbm_regs + + schizo_imap_offset(SCHIZO_PCIERR_A_INO) + 4)); + + pbm = pbm_for_ino(p, SCHIZO_PCIERR_B_INO); + irq = schizo_irq_build(pbm, NULL, ((pbm->portid << 6) | + SCHIZO_PCIERR_B_INO)); + if (request_irq(irq, schizo_pcierr_intr, + SA_SHIRQ, "TOMATILLO PCIERR", pbm) < 0) { + prom_printf("%s: Cannot register PBM B PciERR interrupt.\n", + pbm->name); + prom_halt(); + } + bucket = __bucket(irq); + tmp = upa_readl(bucket->imap); + upa_writel(tmp, (pbm->pbm_regs + + schizo_imap_offset(SCHIZO_PCIERR_B_INO) + 4)); + + pbm = pbm_for_ino(p, SCHIZO_SERR_INO); + irq = schizo_irq_build(pbm, NULL, (pbm->portid << 6) | SCHIZO_SERR_INO); + if (request_irq(irq, schizo_safarierr_intr, + SA_SHIRQ, "TOMATILLO SERR", p) < 0) { + prom_printf("%s: Cannot register SafariERR interrupt.\n", + pbm->name); + prom_halt(); + } + bucket = __bucket(irq); + tmp = upa_readl(bucket->imap); + upa_writel(tmp, (pbm->pbm_regs + + schizo_imap_offset(SCHIZO_SERR_INO) + 4)); + + /* Enable UE and CE interrupts for controller. */ + schizo_write(p->pbm_A.controller_regs + SCHIZO_ECC_CTRL, + (SCHIZO_ECCCTRL_EE | + SCHIZO_ECCCTRL_UE | + SCHIZO_ECCCTRL_CE)); + + schizo_write(p->pbm_B.controller_regs + SCHIZO_ECC_CTRL, + (SCHIZO_ECCCTRL_EE | + SCHIZO_ECCCTRL_UE | + SCHIZO_ECCCTRL_CE)); + + /* Enable PCI Error interrupts and clear error + * bits. + */ + err_mask = (SCHIZO_PCICTRL_BUS_UNUS | + SCHIZO_PCICTRL_TTO_ERR | + SCHIZO_PCICTRL_RTRY_ERR | + SCHIZO_PCICTRL_SERR | + SCHIZO_PCICTRL_EEN); + + err_no_mask = SCHIZO_PCICTRL_DTO_ERR; + + tmp = schizo_read(p->pbm_A.pbm_regs + SCHIZO_PCI_CTRL); + tmp |= err_mask; + tmp &= ~err_no_mask; + schizo_write(p->pbm_A.pbm_regs + SCHIZO_PCI_CTRL, tmp); + + tmp = schizo_read(p->pbm_B.pbm_regs + SCHIZO_PCI_CTRL); + tmp |= err_mask; + tmp &= ~err_no_mask; + schizo_write(p->pbm_B.pbm_regs + SCHIZO_PCI_CTRL, tmp); + + err_mask = (SCHIZO_PCIAFSR_PMA | SCHIZO_PCIAFSR_PTA | + SCHIZO_PCIAFSR_PRTRY | SCHIZO_PCIAFSR_PPERR | + SCHIZO_PCIAFSR_PTTO | + SCHIZO_PCIAFSR_SMA | SCHIZO_PCIAFSR_STA | + SCHIZO_PCIAFSR_SRTRY | SCHIZO_PCIAFSR_SPERR | + SCHIZO_PCIAFSR_STTO); + + schizo_write(p->pbm_A.pbm_regs + SCHIZO_PCI_AFSR, err_mask); + schizo_write(p->pbm_B.pbm_regs + SCHIZO_PCI_AFSR, err_mask); + + err_mask = (BUS_ERROR_BADCMD | BUS_ERROR_SNOOP_GR | + BUS_ERROR_SNOOP_PCI | BUS_ERROR_SNOOP_RD | + BUS_ERROR_SNOOP_RDS | BUS_ERROR_SNOOP_RDSA | + BUS_ERROR_SNOOP_OWN | BUS_ERROR_SNOOP_RDO | + BUS_ERROR_WDATA_PERR | BUS_ERROR_CTRL_PERR | + BUS_ERROR_SNOOP_ERR | BUS_ERROR_JBUS_ILL_B | + BUS_ERROR_JBUS_ILL_C | BUS_ERROR_RD_PERR | + BUS_ERROR_APERR | BUS_ERROR_UNMAP | + BUS_ERROR_BUSERR | BUS_ERROR_TIMEOUT); + + schizo_write(p->pbm_A.controller_regs + SCHIZO_SAFARI_ERRCTRL, + (SCHIZO_SAFERRCTRL_EN | err_mask)); + schizo_write(p->pbm_B.controller_regs + SCHIZO_SAFARI_ERRCTRL, + (SCHIZO_SAFERRCTRL_EN | err_mask)); + + schizo_write(p->pbm_A.controller_regs + SCHIZO_SAFARI_IRQCTRL, + (SCHIZO_SAFIRQCTRL_EN | (BUS_ERROR_UNMAP))); + schizo_write(p->pbm_B.controller_regs + SCHIZO_SAFARI_IRQCTRL, + (SCHIZO_SAFIRQCTRL_EN | (BUS_ERROR_UNMAP))); +} + +static void __init schizo_register_error_handlers(struct pci_controller_info *p) +{ + struct pci_pbm_info *pbm; + unsigned int irq; + struct ino_bucket *bucket; + u64 tmp, err_mask, err_no_mask; + + /* Build IRQs and register handlers. */ + pbm = pbm_for_ino(p, SCHIZO_UE_INO); + irq = schizo_irq_build(pbm, NULL, (pbm->portid << 6) | SCHIZO_UE_INO); + if (request_irq(irq, schizo_ue_intr, + SA_SHIRQ, "SCHIZO UE", p) < 0) { + prom_printf("%s: Cannot register UE interrupt.\n", + pbm->name); + prom_halt(); + } + bucket = __bucket(irq); + tmp = upa_readl(bucket->imap); + upa_writel(tmp, (pbm->pbm_regs + schizo_imap_offset(SCHIZO_UE_INO) + 4)); + + pbm = pbm_for_ino(p, SCHIZO_CE_INO); + irq = schizo_irq_build(pbm, NULL, (pbm->portid << 6) | SCHIZO_CE_INO); + if (request_irq(irq, schizo_ce_intr, + SA_SHIRQ, "SCHIZO CE", p) < 0) { + prom_printf("%s: Cannot register CE interrupt.\n", + pbm->name); + prom_halt(); + } + bucket = __bucket(irq); + tmp = upa_readl(bucket->imap); + upa_writel(tmp, (pbm->pbm_regs + schizo_imap_offset(SCHIZO_CE_INO) + 4)); + + pbm = pbm_for_ino(p, SCHIZO_PCIERR_A_INO); + irq = schizo_irq_build(pbm, NULL, (pbm->portid << 6) | SCHIZO_PCIERR_A_INO); + if (request_irq(irq, schizo_pcierr_intr, + SA_SHIRQ, "SCHIZO PCIERR", pbm) < 0) { + prom_printf("%s: Cannot register PBM A PciERR interrupt.\n", + pbm->name); + prom_halt(); + } + bucket = __bucket(irq); + tmp = upa_readl(bucket->imap); + upa_writel(tmp, (pbm->pbm_regs + schizo_imap_offset(SCHIZO_PCIERR_A_INO) + 4)); + + pbm = pbm_for_ino(p, SCHIZO_PCIERR_B_INO); + irq = schizo_irq_build(pbm, NULL, (pbm->portid << 6) | SCHIZO_PCIERR_B_INO); + if (request_irq(irq, schizo_pcierr_intr, + SA_SHIRQ, "SCHIZO PCIERR", &p->pbm_B) < 0) { + prom_printf("%s: Cannot register PBM B PciERR interrupt.\n", + pbm->name); + prom_halt(); + } + bucket = __bucket(irq); + tmp = upa_readl(bucket->imap); + upa_writel(tmp, (pbm->pbm_regs + schizo_imap_offset(SCHIZO_PCIERR_B_INO) + 4)); + + pbm = pbm_for_ino(p, SCHIZO_SERR_INO); + irq = schizo_irq_build(pbm, NULL, (pbm->portid << 6) | SCHIZO_SERR_INO); + if (request_irq(irq, schizo_safarierr_intr, + SA_SHIRQ, "SCHIZO SERR", p) < 0) { + prom_printf("%s: Cannot register SafariERR interrupt.\n", + pbm->name); + prom_halt(); + } + bucket = __bucket(irq); + tmp = upa_readl(bucket->imap); + upa_writel(tmp, (pbm->pbm_regs + schizo_imap_offset(SCHIZO_SERR_INO) + 4)); + + /* Enable UE and CE interrupts for controller. */ + schizo_write(p->pbm_A.controller_regs + SCHIZO_ECC_CTRL, + (SCHIZO_ECCCTRL_EE | + SCHIZO_ECCCTRL_UE | + SCHIZO_ECCCTRL_CE)); + + err_mask = (SCHIZO_PCICTRL_BUS_UNUS | + SCHIZO_PCICTRL_ESLCK | + SCHIZO_PCICTRL_TTO_ERR | + SCHIZO_PCICTRL_RTRY_ERR | + SCHIZO_PCICTRL_SBH_ERR | + SCHIZO_PCICTRL_SERR | + SCHIZO_PCICTRL_EEN); + + err_no_mask = (SCHIZO_PCICTRL_DTO_ERR | + SCHIZO_PCICTRL_SBH_INT); + + /* Enable PCI Error interrupts and clear error + * bits for each PBM. + */ + tmp = schizo_read(p->pbm_A.pbm_regs + SCHIZO_PCI_CTRL); + tmp |= err_mask; + tmp &= ~err_no_mask; + schizo_write(p->pbm_A.pbm_regs + SCHIZO_PCI_CTRL, tmp); + + schizo_write(p->pbm_A.pbm_regs + SCHIZO_PCI_AFSR, + (SCHIZO_PCIAFSR_PMA | SCHIZO_PCIAFSR_PTA | + SCHIZO_PCIAFSR_PRTRY | SCHIZO_PCIAFSR_PPERR | + SCHIZO_PCIAFSR_PTTO | SCHIZO_PCIAFSR_PUNUS | + SCHIZO_PCIAFSR_SMA | SCHIZO_PCIAFSR_STA | + SCHIZO_PCIAFSR_SRTRY | SCHIZO_PCIAFSR_SPERR | + SCHIZO_PCIAFSR_STTO | SCHIZO_PCIAFSR_SUNUS)); + + tmp = schizo_read(p->pbm_B.pbm_regs + SCHIZO_PCI_CTRL); + tmp |= err_mask; + tmp &= ~err_no_mask; + schizo_write(p->pbm_B.pbm_regs + SCHIZO_PCI_CTRL, tmp); + + schizo_write(p->pbm_B.pbm_regs + SCHIZO_PCI_AFSR, + (SCHIZO_PCIAFSR_PMA | SCHIZO_PCIAFSR_PTA | + SCHIZO_PCIAFSR_PRTRY | SCHIZO_PCIAFSR_PPERR | + SCHIZO_PCIAFSR_PTTO | SCHIZO_PCIAFSR_PUNUS | + SCHIZO_PCIAFSR_SMA | SCHIZO_PCIAFSR_STA | + SCHIZO_PCIAFSR_SRTRY | SCHIZO_PCIAFSR_SPERR | + SCHIZO_PCIAFSR_STTO | SCHIZO_PCIAFSR_SUNUS)); + + /* Make all Safari error conditions fatal except unmapped + * errors which we make generate interrupts. + */ + err_mask = (BUS_ERROR_BADCMD | BUS_ERROR_SSMDIS | + BUS_ERROR_BADMA | BUS_ERROR_BADMB | + BUS_ERROR_BADMC | + BUS_ERROR_CPU1PS | BUS_ERROR_CPU1PB | + BUS_ERROR_CPU0PS | BUS_ERROR_CPU0PB | + BUS_ERROR_CIQTO | + BUS_ERROR_LPQTO | BUS_ERROR_SFPQTO | + BUS_ERROR_UFPQTO | BUS_ERROR_APERR | + BUS_ERROR_BUSERR | BUS_ERROR_TIMEOUT | + BUS_ERROR_ILL); +#if 1 + /* XXX Something wrong with some Excalibur systems + * XXX Sun is shipping. The behavior on a 2-cpu + * XXX machine is that both CPU1 parity error bits + * XXX are set and are immediately set again when + * XXX their error status bits are cleared. Just + * XXX ignore them for now. -DaveM + */ + err_mask &= ~(BUS_ERROR_CPU1PS | BUS_ERROR_CPU1PB | + BUS_ERROR_CPU0PS | BUS_ERROR_CPU0PB); +#endif + + schizo_write(p->pbm_A.controller_regs + SCHIZO_SAFARI_ERRCTRL, + (SCHIZO_SAFERRCTRL_EN | err_mask)); + + schizo_write(p->pbm_A.controller_regs + SCHIZO_SAFARI_IRQCTRL, + (SCHIZO_SAFIRQCTRL_EN | (BUS_ERROR_UNMAP))); +} + +static void __init pbm_config_busmastering(struct pci_pbm_info *pbm) +{ + u8 *addr; + + /* Set cache-line size to 64 bytes, this is actually + * a nop but I do it for completeness. + */ + addr = schizo_pci_config_mkaddr(pbm, pbm->pci_first_busno, + 0, PCI_CACHE_LINE_SIZE); + pci_config_write8(addr, 64 / sizeof(u32)); + + /* Set PBM latency timer to 64 PCI clocks. */ + addr = schizo_pci_config_mkaddr(pbm, pbm->pci_first_busno, + 0, PCI_LATENCY_TIMER); + pci_config_write8(addr, 64); +} + +static void __init pbm_scan_bus(struct pci_controller_info *p, + struct pci_pbm_info *pbm) +{ + struct pcidev_cookie *cookie = kmalloc(sizeof(*cookie), GFP_KERNEL); + + if (!cookie) { + prom_printf("%s: Critical allocation failure.\n", pbm->name); + prom_halt(); + } + + /* All we care about is the PBM. */ + memset(cookie, 0, sizeof(*cookie)); + cookie->pbm = pbm; + + pbm->pci_bus = pci_scan_bus(pbm->pci_first_busno, + p->pci_ops, + pbm); + pci_fixup_host_bridge_self(pbm->pci_bus); + pbm->pci_bus->self->sysdata = cookie; + + pci_fill_in_pbm_cookies(pbm->pci_bus, pbm, pbm->prom_node); + pci_record_assignments(pbm, pbm->pci_bus); + pci_assign_unassigned(pbm, pbm->pci_bus); + pci_fixup_irq(pbm, pbm->pci_bus); + pci_determine_66mhz_disposition(pbm, pbm->pci_bus); + pci_setup_busmastering(pbm, pbm->pci_bus); +} + +static void __init __schizo_scan_bus(struct pci_controller_info *p, + int chip_type) +{ + if (!p->pbm_B.prom_node || !p->pbm_A.prom_node) { + printk("PCI: Only one PCI bus module of controller found.\n"); + printk("PCI: Ignoring entire controller.\n"); + return; + } + + pbm_config_busmastering(&p->pbm_B); + p->pbm_B.is_66mhz_capable = + prom_getbool(p->pbm_B.prom_node, "66mhz-capable"); + pbm_config_busmastering(&p->pbm_A); + p->pbm_A.is_66mhz_capable = + prom_getbool(p->pbm_A.prom_node, "66mhz-capable"); + pbm_scan_bus(p, &p->pbm_B); + pbm_scan_bus(p, &p->pbm_A); + + /* After the PCI bus scan is complete, we can register + * the error interrupt handlers. + */ + if (chip_type == PBM_CHIP_TYPE_TOMATILLO) + tomatillo_register_error_handlers(p); + else + schizo_register_error_handlers(p); +} + +static void __init schizo_scan_bus(struct pci_controller_info *p) +{ + __schizo_scan_bus(p, PBM_CHIP_TYPE_SCHIZO); +} + +static void __init tomatillo_scan_bus(struct pci_controller_info *p) +{ + __schizo_scan_bus(p, PBM_CHIP_TYPE_TOMATILLO); +} + +static void __init schizo_base_address_update(struct pci_dev *pdev, int resource) +{ + struct pcidev_cookie *pcp = pdev->sysdata; + struct pci_pbm_info *pbm = pcp->pbm; + struct resource *res, *root; + 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) + root = &pbm->io_space; + else { + root = &pbm->mem_space; + 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 - root->start)) & ~size)); + if (resource == PCI_ROM_RESOURCE) { + reg |= PCI_ROM_ADDRESS_ENABLE; + res->flags |= IORESOURCE_ROM_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 schizo_resource_adjust(struct pci_dev *pdev, + struct resource *res, + struct resource *root) +{ + res->start += root->start; + res->end += root->start; +} + +/* Use ranges property to determine where PCI MEM, I/O, and Config + * space are for this PCI bus module. + */ +static void schizo_determine_mem_io_space(struct pci_pbm_info *pbm) +{ + int i, saw_cfg, saw_mem, saw_io; + + saw_cfg = saw_mem = saw_io = 0; + for (i = 0; i < pbm->num_pbm_ranges; i++) { + struct linux_prom_pci_ranges *pr = &pbm->pbm_ranges[i]; + unsigned long a; + int type; + + type = (pr->child_phys_hi >> 24) & 0x3; + a = (((unsigned long)pr->parent_phys_hi << 32UL) | + ((unsigned long)pr->parent_phys_lo << 0UL)); + + switch (type) { + case 0: + /* PCI config space, 16MB */ + pbm->config_space = a; + saw_cfg = 1; + break; + + case 1: + /* 16-bit IO space, 16MB */ + pbm->io_space.start = a; + pbm->io_space.end = a + ((16UL*1024UL*1024UL) - 1UL); + pbm->io_space.flags = IORESOURCE_IO; + saw_io = 1; + break; + + case 2: + /* 32-bit MEM space, 2GB */ + pbm->mem_space.start = a; + pbm->mem_space.end = a + (0x80000000UL - 1UL); + pbm->mem_space.flags = IORESOURCE_MEM; + saw_mem = 1; + break; + + default: + break; + }; + } + + if (!saw_cfg || !saw_io || !saw_mem) { + prom_printf("%s: Fatal error, missing %s PBM range.\n", + pbm->name, + ((!saw_cfg ? + "CFG" : + (!saw_io ? + "IO" : "MEM")))); + prom_halt(); + } + + printk("%s: PCI CFG[%lx] IO[%lx] MEM[%lx]\n", + pbm->name, + pbm->config_space, + pbm->io_space.start, + pbm->mem_space.start); +} + +static void __init pbm_register_toplevel_resources(struct pci_controller_info *p, + struct pci_pbm_info *pbm) +{ + pbm->io_space.name = pbm->mem_space.name = pbm->name; + + request_resource(&ioport_resource, &pbm->io_space); + request_resource(&iomem_resource, &pbm->mem_space); + pci_register_legacy_regions(&pbm->io_space, + &pbm->mem_space); +} + +#define SCHIZO_STRBUF_CONTROL (0x02800UL) +#define SCHIZO_STRBUF_FLUSH (0x02808UL) +#define SCHIZO_STRBUF_FSYNC (0x02810UL) +#define SCHIZO_STRBUF_CTXFLUSH (0x02818UL) +#define SCHIZO_STRBUF_CTXMATCH (0x10000UL) + +static void schizo_pbm_strbuf_init(struct pci_pbm_info *pbm) +{ + unsigned long base = pbm->pbm_regs; + u64 control; + + if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO) { + /* TOMATILLO lacks streaming cache. */ + return; + } + + /* SCHIZO has context flushing. */ + pbm->stc.strbuf_control = base + SCHIZO_STRBUF_CONTROL; + pbm->stc.strbuf_pflush = base + SCHIZO_STRBUF_FLUSH; + pbm->stc.strbuf_fsync = base + SCHIZO_STRBUF_FSYNC; + pbm->stc.strbuf_ctxflush = base + SCHIZO_STRBUF_CTXFLUSH; + pbm->stc.strbuf_ctxmatch_base = base + SCHIZO_STRBUF_CTXMATCH; + + pbm->stc.strbuf_flushflag = (volatile unsigned long *) + ((((unsigned long)&pbm->stc.__flushflag_buf[0]) + + 63UL) + & ~63UL); + pbm->stc.strbuf_flushflag_pa = (unsigned long) + __pa(pbm->stc.strbuf_flushflag); + + /* Turn off LRU locking and diag mode, enable the + * streaming buffer and leave the rerun-disable + * setting however OBP set it. + */ + control = schizo_read(pbm->stc.strbuf_control); + control &= ~(SCHIZO_STRBUF_CTRL_LPTR | + SCHIZO_STRBUF_CTRL_LENAB | + SCHIZO_STRBUF_CTRL_DENAB); + control |= SCHIZO_STRBUF_CTRL_ENAB; + schizo_write(pbm->stc.strbuf_control, control); + + pbm->stc.strbuf_enabled = 1; +} + +#define SCHIZO_IOMMU_CONTROL (0x00200UL) +#define SCHIZO_IOMMU_TSBBASE (0x00208UL) +#define SCHIZO_IOMMU_FLUSH (0x00210UL) +#define SCHIZO_IOMMU_CTXFLUSH (0x00218UL) + +static void schizo_pbm_iommu_init(struct pci_pbm_info *pbm) +{ + struct pci_iommu *iommu = pbm->iommu; + unsigned long tsbbase, i, tagbase, database, order; + u32 vdma[2], dma_mask; + u64 control; + int err, tsbsize; + + err = prom_getproperty(pbm->prom_node, "virtual-dma", + (char *)&vdma[0], sizeof(vdma)); + if (err == 0 || err == -1) { + /* No property, use default values. */ + vdma[0] = 0xc0000000; + vdma[1] = 0x40000000; + } + + 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("SCHIZO: strange virtual-dma size.\n"); + prom_halt(); + }; + + /* Setup initial software IOMMU state. */ + spin_lock_init(&iommu->lock); + iommu->iommu_cur_ctx = 0; + + /* Register addresses, SCHIZO has iommu ctx flushing. */ + iommu->iommu_control = pbm->pbm_regs + SCHIZO_IOMMU_CONTROL; + iommu->iommu_tsbbase = pbm->pbm_regs + SCHIZO_IOMMU_TSBBASE; + iommu->iommu_flush = pbm->pbm_regs + SCHIZO_IOMMU_FLUSH; + iommu->iommu_ctxflush = pbm->pbm_regs + SCHIZO_IOMMU_CTXFLUSH; + + /* We use the main control/status register of SCHIZO as the write + * completion register. + */ + iommu->write_complete_reg = pbm->controller_regs + 0x10000UL; + + /* + * Invalidate TLB Entries. + */ + control = schizo_read(iommu->iommu_control); + control |= SCHIZO_IOMMU_CTRL_DENAB; + schizo_write(iommu->iommu_control, control); + + tagbase = SCHIZO_IOMMU_TAG, database = SCHIZO_IOMMU_DATA; + + for(i = 0; i < 16; i++) { + schizo_write(pbm->pbm_regs + tagbase + (i * 8UL), 0); + schizo_write(pbm->pbm_regs + database + (i * 8UL), 0); + } + + /* Leave diag mode enabled for full-flushing done + * in pci_iommu.c + */ + + iommu->dummy_page = __get_free_pages(GFP_KERNEL, 0); + if (!iommu->dummy_page) { + prom_printf("PSYCHO_IOMMU: Error, gfp(dummy_page) failed.\n"); + prom_halt(); + } + memset((void *)iommu->dummy_page, 0, PAGE_SIZE); + iommu->dummy_page_pa = (unsigned long) __pa(iommu->dummy_page); + + /* Using assumed page size 8K with 128K entries we need 1MB iommu page + * table (128K ioptes * 8 bytes per iopte). This is + * page order 7 on UltraSparc. + */ + order = get_order(tsbsize * 8 * 1024); + tsbbase = __get_free_pages(GFP_KERNEL, order); + if (!tsbbase) { + prom_printf("%s: Error, gfp(tsb) failed.\n", pbm->name); + prom_halt(); + } + + iommu->page_table = (iopte_t *)tsbbase; + iommu->page_table_map_base = vdma[0]; + iommu->dma_addr_mask = dma_mask; + pci_iommu_table_init(iommu, PAGE_SIZE << order); + + switch (tsbsize) { + case 64: + iommu->page_table_sz_bits = 16; + break; + + case 128: + iommu->page_table_sz_bits = 17; + break; + + default: + prom_printf("iommu_init: Illegal TSB size %d\n", tsbsize); + prom_halt(); + break; + }; + + /* 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; + } + + schizo_write(iommu->iommu_tsbbase, __pa(tsbbase)); + + control = schizo_read(iommu->iommu_control); + control &= ~(SCHIZO_IOMMU_CTRL_TSBSZ | SCHIZO_IOMMU_CTRL_TBWSZ); + switch (tsbsize) { + case 64: + control |= SCHIZO_IOMMU_TSBSZ_64K; + break; + case 128: + control |= SCHIZO_IOMMU_TSBSZ_128K; + break; + }; + + control |= SCHIZO_IOMMU_CTRL_ENAB; + schizo_write(iommu->iommu_control, control); +} + +#define SCHIZO_PCI_IRQ_RETRY (0x1a00UL) +#define SCHIZO_IRQ_RETRY_INF 0xffUL + +#define SCHIZO_PCI_DIAG (0x2020UL) +#define SCHIZO_PCIDIAG_D_BADECC (1UL << 10UL) /* Disable BAD ECC errors (Schizo) */ +#define SCHIZO_PCIDIAG_D_BYPASS (1UL << 9UL) /* Disable MMU bypass mode (Schizo/Tomatillo) */ +#define SCHIZO_PCIDIAG_D_TTO (1UL << 8UL) /* Disable TTO errors (Schizo/Tomatillo) */ +#define SCHIZO_PCIDIAG_D_RTRYARB (1UL << 7UL) /* Disable retry arbitration (Schizo) */ +#define SCHIZO_PCIDIAG_D_RETRY (1UL << 6UL) /* Disable retry limit (Schizo/Tomatillo) */ +#define SCHIZO_PCIDIAG_D_INTSYNC (1UL << 5UL) /* Disable interrupt/DMA synch (Schizo/Tomatillo) */ +#define SCHIZO_PCIDIAG_I_DMA_PARITY (1UL << 3UL) /* Invert DMA parity (Schizo/Tomatillo) */ +#define SCHIZO_PCIDIAG_I_PIOD_PARITY (1UL << 2UL) /* Invert PIO data parity (Schizo/Tomatillo) */ +#define SCHIZO_PCIDIAG_I_PIOA_PARITY (1UL << 1UL) /* Invert PIO address parity (Schizo/Tomatillo) */ + +#define TOMATILLO_PCI_IOC_CSR (0x2248UL) +#define TOMATILLO_IOC_PART_WPENAB 0x0000000000080000UL +#define TOMATILLO_IOC_RDMULT_PENAB 0x0000000000040000UL +#define TOMATILLO_IOC_RDONE_PENAB 0x0000000000020000UL +#define TOMATILLO_IOC_RDLINE_PENAB 0x0000000000010000UL +#define TOMATILLO_IOC_RDMULT_PLEN 0x000000000000c000UL +#define TOMATILLO_IOC_RDMULT_PLEN_SHIFT 14UL +#define TOMATILLO_IOC_RDONE_PLEN 0x0000000000003000UL +#define TOMATILLO_IOC_RDONE_PLEN_SHIFT 12UL +#define TOMATILLO_IOC_RDLINE_PLEN 0x0000000000000c00UL +#define TOMATILLO_IOC_RDLINE_PLEN_SHIFT 10UL +#define TOMATILLO_IOC_PREF_OFF 0x00000000000003f8UL +#define TOMATILLO_IOC_PREF_OFF_SHIFT 3UL +#define TOMATILLO_IOC_RDMULT_CPENAB 0x0000000000000004UL +#define TOMATILLO_IOC_RDONE_CPENAB 0x0000000000000002UL +#define TOMATILLO_IOC_RDLINE_CPENAB 0x0000000000000001UL + +#define TOMATILLO_PCI_IOC_TDIAG (0x2250UL) +#define TOMATILLO_PCI_IOC_DDIAG (0x2290UL) + +static void __init schizo_pbm_hw_init(struct pci_pbm_info *pbm) +{ + u64 tmp; + + /* Set IRQ retry to infinity. */ + schizo_write(pbm->pbm_regs + SCHIZO_PCI_IRQ_RETRY, + SCHIZO_IRQ_RETRY_INF); + + /* Enable arbiter for all PCI slots. Also, disable PCI interval + * timer so that DTO (Discard TimeOuts) are not reported because + * some Schizo revisions report them erroneously. + */ + tmp = schizo_read(pbm->pbm_regs + SCHIZO_PCI_CTRL); + if (pbm->chip_type == PBM_CHIP_TYPE_SCHIZO_PLUS && + pbm->chip_version == 0x5 && + pbm->chip_revision == 0x1) + tmp |= 0x0f; + else + tmp |= 0xff; + + tmp &= ~SCHIZO_PCICTRL_PTO; + if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO && + pbm->chip_version >= 0x2) + tmp |= 0x3UL << SCHIZO_PCICTRL_PTO_SHIFT; + else + tmp |= 0x1UL << SCHIZO_PCICTRL_PTO_SHIFT; + + if (!prom_getbool(pbm->prom_node, "no-bus-parking")) + tmp |= SCHIZO_PCICTRL_PARK; + + if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO && + pbm->chip_version <= 0x1) + tmp |= (1UL << 61); + else + tmp &= ~(1UL << 61); + + if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO) + tmp |= (SCHIZO_PCICTRL_MRM_PREF | + SCHIZO_PCICTRL_RDO_PREF | + SCHIZO_PCICTRL_RDL_PREF); + + schizo_write(pbm->pbm_regs + SCHIZO_PCI_CTRL, tmp); + + tmp = schizo_read(pbm->pbm_regs + SCHIZO_PCI_DIAG); + tmp &= ~(SCHIZO_PCIDIAG_D_RTRYARB | + SCHIZO_PCIDIAG_D_RETRY | + SCHIZO_PCIDIAG_D_INTSYNC); + schizo_write(pbm->pbm_regs + SCHIZO_PCI_DIAG, tmp); + + if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO) { + /* Clear prefetch lengths to workaround a bug in + * Jalapeno... + */ + tmp = (TOMATILLO_IOC_PART_WPENAB | + (1 << TOMATILLO_IOC_PREF_OFF_SHIFT) | + TOMATILLO_IOC_RDMULT_CPENAB | + TOMATILLO_IOC_RDONE_CPENAB | + TOMATILLO_IOC_RDLINE_CPENAB); + + schizo_write(pbm->pbm_regs + TOMATILLO_PCI_IOC_CSR, + tmp); + } +} + +static void __init schizo_pbm_init(struct pci_controller_info *p, + int prom_node, u32 portid, + int chip_type) +{ + struct linux_prom64_registers pr_regs[4]; + unsigned int busrange[2]; + struct pci_pbm_info *pbm; + const char *chipset_name; + u32 ino_bitmap[2]; + int is_pbm_a; + int err; + + switch (chip_type) { + case PBM_CHIP_TYPE_TOMATILLO: + chipset_name = "TOMATILLO"; + break; + + case PBM_CHIP_TYPE_SCHIZO_PLUS: + chipset_name = "SCHIZO+"; + break; + + case PBM_CHIP_TYPE_SCHIZO: + default: + chipset_name = "SCHIZO"; + break; + }; + + /* For SCHIZO, three OBP regs: + * 1) PBM controller regs + * 2) Schizo front-end controller regs (same for both PBMs) + * 3) PBM PCI config space + * + * For TOMATILLO, four OBP regs: + * 1) PBM controller regs + * 2) Tomatillo front-end controller regs + * 3) PBM PCI config space + * 4) Ichip regs + */ + err = prom_getproperty(prom_node, "reg", + (char *)&pr_regs[0], + sizeof(pr_regs)); + if (err == 0 || err == -1) { + prom_printf("%s: Fatal error, no reg property.\n", + chipset_name); + prom_halt(); + } + + is_pbm_a = ((pr_regs[0].phys_addr & 0x00700000) == 0x00600000); + + if (is_pbm_a) + pbm = &p->pbm_A; + else + pbm = &p->pbm_B; + + pbm->portid = portid; + pbm->parent = p; + pbm->prom_node = prom_node; + pbm->pci_first_slot = 1; + + pbm->chip_type = chip_type; + pbm->chip_version = + prom_getintdefault(prom_node, "version#", 0); + pbm->chip_revision = + prom_getintdefault(prom_node, "module-revision#", 0); + + pbm->pbm_regs = pr_regs[0].phys_addr; + pbm->controller_regs = pr_regs[1].phys_addr - 0x10000UL; + + sprintf(pbm->name, + (chip_type == PBM_CHIP_TYPE_TOMATILLO ? + "TOMATILLO%d PBM%c" : + "SCHIZO%d PBM%c"), + p->index, + (pbm == &p->pbm_A ? 'A' : 'B')); + + printk("%s: ver[%x:%x], portid %x, " + "cregs[%lx] pregs[%lx]\n", + pbm->name, + pbm->chip_version, pbm->chip_revision, + pbm->portid, + pbm->controller_regs, + pbm->pbm_regs); + + schizo_pbm_hw_init(pbm); + + prom_getstring(prom_node, "name", + pbm->prom_name, + sizeof(pbm->prom_name)); + + err = prom_getproperty(prom_node, "ranges", + (char *) pbm->pbm_ranges, + sizeof(pbm->pbm_ranges)); + if (err == 0 || err == -1) { + prom_printf("%s: Fatal error, no ranges property.\n", + pbm->name); + prom_halt(); + } + + pbm->num_pbm_ranges = + (err / sizeof(struct linux_prom_pci_ranges)); + + schizo_determine_mem_io_space(pbm); + pbm_register_toplevel_resources(p, pbm); + + err = prom_getproperty(prom_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(prom_node, "interrupt-map-mask", + (char *)&pbm->pbm_intmask, + sizeof(pbm->pbm_intmask)); + if (err == -1) { + prom_printf("%s: Fatal error, no " + "interrupt-map-mask.\n", pbm->name); + prom_halt(); + } + } else { + pbm->num_pbm_intmap = 0; + memset(&pbm->pbm_intmask, 0, sizeof(pbm->pbm_intmask)); + } + + err = prom_getproperty(prom_node, "ino-bitmap", + (char *) &ino_bitmap[0], + sizeof(ino_bitmap)); + if (err == 0 || err == -1) { + prom_printf("%s: Fatal error, no ino-bitmap.\n", pbm->name); + prom_halt(); + } + pbm->ino_bitmap = (((u64)ino_bitmap[1] << 32UL) | + ((u64)ino_bitmap[0] << 0UL)); + + err = prom_getproperty(prom_node, "bus-range", + (char *)&busrange[0], + sizeof(busrange)); + if (err == 0 || err == -1) { + prom_printf("%s: Fatal error, no bus-range.\n", pbm->name); + prom_halt(); + } + pbm->pci_first_busno = busrange[0]; + pbm->pci_last_busno = busrange[1]; + + schizo_pbm_iommu_init(pbm); + schizo_pbm_strbuf_init(pbm); +} + +static inline int portid_compare(u32 x, u32 y, int chip_type) +{ + if (chip_type == PBM_CHIP_TYPE_TOMATILLO) { + if (x == (y ^ 1)) + return 1; + return 0; + } + return (x == y); +} + +static void __init __schizo_init(int node, char *model_name, int chip_type) +{ + struct pci_controller_info *p; + struct pci_iommu *iommu; + int is_pbm_a; + u32 portid; + + portid = prom_getintdefault(node, "portid", 0xff); + + for(p = pci_controller_root; p; p = p->next) { + struct pci_pbm_info *pbm; + + if (p->pbm_A.prom_node && p->pbm_B.prom_node) + continue; + + pbm = (p->pbm_A.prom_node ? + &p->pbm_A : + &p->pbm_B); + + if (portid_compare(pbm->portid, portid, chip_type)) { + is_pbm_a = (p->pbm_A.prom_node == 0); + schizo_pbm_init(p, node, portid, chip_type); + return; + } + } + + p = kmalloc(sizeof(struct pci_controller_info), GFP_ATOMIC); + if (!p) { + prom_printf("SCHIZO: Fatal memory allocation error.\n"); + prom_halt(); + } + memset(p, 0, sizeof(*p)); + + iommu = kmalloc(sizeof(struct pci_iommu), GFP_ATOMIC); + if (!iommu) { + prom_printf("SCHIZO: Fatal memory allocation error.\n"); + prom_halt(); + } + memset(iommu, 0, sizeof(*iommu)); + p->pbm_A.iommu = iommu; + + iommu = kmalloc(sizeof(struct pci_iommu), GFP_ATOMIC); + if (!iommu) { + prom_printf("SCHIZO: Fatal memory allocation error.\n"); + prom_halt(); + } + memset(iommu, 0, sizeof(*iommu)); + p->pbm_B.iommu = iommu; + + p->next = pci_controller_root; + pci_controller_root = p; + + p->index = pci_num_controllers++; + p->pbms_same_domain = 0; + p->scan_bus = (chip_type == PBM_CHIP_TYPE_TOMATILLO ? + tomatillo_scan_bus : + schizo_scan_bus); + p->irq_build = schizo_irq_build; + p->base_address_update = schizo_base_address_update; + p->resource_adjust = schizo_resource_adjust; + p->pci_ops = &schizo_ops; + + /* Like PSYCHO we have a 2GB aligned area for memory space. */ + pci_memspace_mask = 0x7fffffffUL; + + schizo_pbm_init(p, node, portid, chip_type); +} + +void __init schizo_init(int node, char *model_name) +{ + __schizo_init(node, model_name, PBM_CHIP_TYPE_SCHIZO); +} + +void __init schizo_plus_init(int node, char *model_name) +{ + __schizo_init(node, model_name, PBM_CHIP_TYPE_SCHIZO_PLUS); +} + +void __init tomatillo_init(int node, char *model_name) +{ + __schizo_init(node, model_name, PBM_CHIP_TYPE_TOMATILLO); +} |
