pci_schizo.c
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- /* $Id: pci_schizo.c,v 1.23.2.2 2002/03/11 07:55:24 davem Exp $
- * pci_schizo.c: SCHIZO specific PCI controller support.
- *
- * Copyright (C) 2001 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 <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.
- *
- * These offsets look weird because I keep in p->controller_regs
- * the second PROM register property minus 0x10000 which is the
- * base of the Safari and UPA64S registers of SCHIZO.
- */
- #define SCHIZO_PBM_A_REGS_OFF (0x600000UL - 0x400000UL)
- #define SCHIZO_PBM_B_REGS_OFF (0x700000UL - 0x400000UL)
- /* 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 0xfffffffff9000000 /* Reserved */
- #define SCHIZO_IOMMU_CTRL_XLTESTAT 0x0000000006000000 /* Translation Error Status */
- #define SCHIZO_IOMMU_CTRL_XLTEERR 0x0000000001000000 /* Translation Error encountered */
- #define SCHIZO_IOMMU_CTRL_LCKEN 0x0000000000800000 /* Enable translation locking */
- #define SCHIZO_IOMMU_CTRL_LCKPTR 0x0000000000780000 /* Translation lock pointer */
- #define SCHIZO_IOMMU_CTRL_TSBSZ 0x0000000000070000 /* TSB Size */
- #define SCHIZO_IOMMU_TSBSZ_1K 0x0000000000000000 /* TSB Table 1024 8-byte entries */
- #define SCHIZO_IOMMU_TSBSZ_2K 0x0000000000010000 /* TSB Table 2048 8-byte entries */
- #define SCHIZO_IOMMU_TSBSZ_4K 0x0000000000020000 /* TSB Table 4096 8-byte entries */
- #define SCHIZO_IOMMU_TSBSZ_8K 0x0000000000030000 /* TSB Table 8192 8-byte entries */
- #define SCHIZO_IOMMU_TSBSZ_16K 0x0000000000040000 /* TSB Table 16k 8-byte entries */
- #define SCHIZO_IOMMU_TSBSZ_32K 0x0000000000050000 /* TSB Table 32k 8-byte entries */
- #define SCHIZO_IOMMU_TSBSZ_64K 0x0000000000060000 /* TSB Table 64k 8-byte entries */
- #define SCHIZO_IOMMU_TSBSZ_128K 0x0000000000070000 /* TSB Table 128k 8-byte entries */
- #define SCHIZO_IOMMU_CTRL_RESV2 0x000000000000fff8 /* Reserved */
- #define SCHIZO_IOMMU_CTRL_TBWSZ 0x0000000000000004 /* Assumed page size, 0=8k 1=64k */
- #define SCHIZO_IOMMU_CTRL_DENAB 0x0000000000000002 /* Diagnostic mode enable */
- #define SCHIZO_IOMMU_CTRL_ENAB 0x0000000000000001 /* 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;
- return (void *)
- (SCHIZO_CONFIG_BASE(pbm) |
- SCHIZO_CONFIG_ENCODE(bus, devfn, where));
- }
- /* 4 slots on pbm A, and 6 slots on pbm B. In both cases
- * slot 0 is the SCHIZO host bridge itself.
- */
- static int schizo_out_of_range(struct pci_pbm_info *pbm,
- unsigned char bus,
- unsigned char devfn)
- {
- return ((pbm->parent == 0) ||
- ((pbm == &pbm->parent->pbm_B) &&
- (bus == pbm->pci_first_busno) &&
- PCI_SLOT(devfn) > 6) ||
- ((pbm == &pbm->parent->pbm_A) &&
- (bus == pbm->pci_first_busno) &&
- PCI_SLOT(devfn) > 4));
- }
- /* SCHIZO PCI configuration space accessors. */
- static int schizo_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 = schizo_pci_config_mkaddr(pbm, bus, devfn, where);
- if (!addr)
- return PCIBIOS_SUCCESSFUL;
- if (schizo_out_of_range(pbm, bus, devfn))
- return PCIBIOS_SUCCESSFUL;
- pci_config_read8(addr, value);
- return PCIBIOS_SUCCESSFUL;
- }
- static int schizo_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 = schizo_pci_config_mkaddr(pbm, bus, devfn, where);
- if (!addr)
- return PCIBIOS_SUCCESSFUL;
- if (schizo_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 schizo_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 = schizo_pci_config_mkaddr(pbm, bus, devfn, where);
- if (!addr)
- return PCIBIOS_SUCCESSFUL;
- if (schizo_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 schizo_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 = schizo_pci_config_mkaddr(pbm, bus, devfn, where);
- if (!addr)
- return PCIBIOS_SUCCESSFUL;
- if (schizo_out_of_range(pbm, bus, devfn))
- return PCIBIOS_SUCCESSFUL;
- pci_config_write8(addr, value);
- return PCIBIOS_SUCCESSFUL;
- }
- static int schizo_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 = schizo_pci_config_mkaddr(pbm, bus, devfn, where);
- if (!addr)
- return PCIBIOS_SUCCESSFUL;
- if (schizo_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 schizo_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 = schizo_pci_config_mkaddr(pbm, bus, devfn, where);
- if (!addr)
- return PCIBIOS_SUCCESSFUL;
- if (schizo_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 struct pci_ops schizo_ops = {
- schizo_read_byte,
- schizo_read_word,
- schizo_read_dword,
- schizo_write_byte,
- schizo_write_word,
- schizo_write_dword
- };
- /* 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 __init schizo_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, pbm_off;
- unsigned long imap_off, iclr_off;
- int pil;
- if (pbm == &p->pbm_A)
- pbm_off = SCHIZO_PBM_A_REGS_OFF;
- else
- pbm_off = SCHIZO_PBM_B_REGS_OFF;
- 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 = p->controller_regs + pbm_off + imap_off;
- imap += 4;
- iclr_off = schizo_iclr_offset(ino);
- iclr = p->controller_regs + pbm_off + 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.
- */
- bucket = __bucket(build_irq(pil, 0, 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 spinlock_t stc_buf_lock = SPIN_LOCK_UNLOCKED;
- static unsigned long stc_error_buf[128];
- static unsigned long stc_tag_buf[16];
- static unsigned long stc_line_buf[16];
- static void schizo_clear_other_err_intr(int irq)
- {
- struct ino_bucket *bucket = __bucket(irq);
- unsigned long iclr = bucket->iclr;
- iclr += (SCHIZO_PBM_B_REGS_OFF - SCHIZO_PBM_A_REGS_OFF);
- 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_controller_info *p = pbm->parent;
- struct pci_strbuf *strbuf = &pbm->stc;
- unsigned long regbase = p->controller_regs;
- unsigned long err_base, tag_base, line_base;
- u64 control;
- char pbm_name = (pbm == &p->pbm_A ? 'A' : 'B');
- int i;
- if (pbm == &p->pbm_A)
- regbase += SCHIZO_PBM_A_REGS_OFF;
- else
- regbase += SCHIZO_PBM_B_REGS_OFF;
- 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("SCHIZO%d: PBM-%c STC_ERR(%d)[wr(%d)rd(%d)]n",
- p->index, 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("SCHIZO%d: PBM-%c STC_TAG(%d)[PA(%016lx)VA(%08lx)V(%d)R(%d)]n",
- p->index, 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("SCHIZO%d: PBM-%c STC_LINE(%d)[LIDX(%lx)SP(%lx)LADDR(%lx)EP(%lx)"
- "V(%d)FOFN(%d)]n",
- p->index, 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_controller_info *p = pbm->parent;
- struct pci_iommu *iommu = pbm->iommu;
- unsigned long iommu_tag[16];
- unsigned long iommu_data[16];
- unsigned long flags;
- u64 control;
- char pbm_name = (pbm == &p->pbm_A ? 'A' : 'B');
- 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("SCHIZO%d: PBM-%c IOMMU Error, type[%s]n",
- p->index, 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 = p->controller_regs;
- if (pbm == &p->pbm_A)
- base += SCHIZO_PBM_A_REGS_OFF;
- else
- base += SCHIZO_PBM_B_REGS_OFF;
- 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("SCHIZO%d: PBM-%c IOMMU TAG(%d)[error(%s) ctx(%x) wr(%d) str(%d) "
- "sz(%dK) vpg(%08lx)]n",
- p->index, 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("SCHIZO%d: PBM-%c IOMMU DATA(%d)[valid(%d) cache(%d) ppg(%016lx)]n",
- p->index, 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);
- }
- }
- __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
- #define SCHIZO_UEAFSR_PDRD 0x4000000000000000UL
- #define SCHIZO_UEAFSR_PDWR 0x2000000000000000UL
- #define SCHIZO_UEAFSR_SPIO 0x1000000000000000UL
- #define SCHIZO_UEAFSR_SDMA 0x0800000000000000UL
- #define SCHIZO_UEAFSR_ERRPNDG 0x0300000000000000UL
- #define SCHIZO_UEAFSR_BMSK 0x000003ff00000000UL
- #define SCHIZO_UEAFSR_QOFF 0x00000000c0000000UL
- #define SCHIZO_UEAFSR_AID 0x000000001f000000UL
- #define SCHIZO_UEAFSR_PARTIAL 0x0000000000800000UL
- #define SCHIZO_UEAFSR_OWNEDIN 0x0000000000400000UL
- #define SCHIZO_UEAFSR_MTAGSYND 0x00000000000f0000UL
- #define SCHIZO_UEAFSR_MTAG 0x000000000000e000UL
- #define SCHIZO_UEAFSR_ECCSYND 0x00000000000001ffUL
- static void schizo_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 + SCHIZO_UE_AFSR;
- unsigned long afar_reg = p->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;
- schizo_write(afsr_reg, error_bits);
- /* Log the error. */
- printk("SCHIZO%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("SCHIZO%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("SCHIZO%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("SCHIZO%d: UE AFAR [%016lx]n", p->index, afar);
- printk("SCHIZO%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(irq);
- }
- #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 void schizo_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 + SCHIZO_CE_AFSR;
- unsigned long afar_reg = p->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;
- schizo_write(afsr_reg, error_bits);
- /* Log the error. */
- printk("SCHIZO%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("SCHIZO%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("SCHIZO%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("SCHIZO%d: CE AFAR [%016lx]n", p->index, afar);
- printk("SCHIZO%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(irq);
- }
- #define SCHIZO_PCI_AFSR 0x2010UL
- #define SCHIZO_PCI_AFAR 0x2018UL
- #define SCHIZO_PCIAFSR_PMA 0x8000000000000000UL
- #define SCHIZO_PCIAFSR_PTA 0x4000000000000000UL
- #define SCHIZO_PCIAFSR_PRTRY 0x2000000000000000UL
- #define SCHIZO_PCIAFSR_PPERR 0x1000000000000000UL
- #define SCHIZO_PCIAFSR_PTTO 0x0800000000000000UL
- #define SCHIZO_PCIAFSR_PUNUS 0x0400000000000000UL
- #define SCHIZO_PCIAFSR_SMA 0x0200000000000000UL
- #define SCHIZO_PCIAFSR_STA 0x0100000000000000UL
- #define SCHIZO_PCIAFSR_SRTRY 0x0080000000000000UL
- #define SCHIZO_PCIAFSR_SPERR 0x0040000000000000UL
- #define SCHIZO_PCIAFSR_STTO 0x0020000000000000UL
- #define SCHIZO_PCIAFSR_SUNUS 0x0010000000000000UL
- #define SCHIZO_PCIAFSR_BMSK 0x000003ff00000000UL
- #define SCHIZO_PCIAFSR_BLK 0x0000000080000000UL
- #define SCHIZO_PCIAFSR_CFG 0x0000000040000000UL
- #define SCHIZO_PCIAFSR_MEM 0x0000000020000000UL
- #define SCHIZO_PCIAFSR_IO 0x0000000010000000UL
- static void 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;
- char pbm_name;
- base = p->controller_regs;
- if (pbm == &pbm->parent->pbm_A) {
- base += SCHIZO_PBM_A_REGS_OFF;
- pbm_name = 'A';
- } else {
- base += SCHIZO_PBM_B_REGS_OFF;
- pbm_name = 'B';
- }
- 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_write(afsr_reg, error_bits);
- /* Log the error. */
- printk("SCHIZO%d: PBM-%c PCI Error, primary error type[%s]n",
- p->index, 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("SCHIZO%d: PBM-%c bytemask[%04lx] was_block(%d) space(%s)n",
- p->index, 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("SCHIZO%d: PBM-%c PCI AFAR [%016lx]n",
- p->index, pbm_name, afar);
- printk("SCHIZO%d: PBM-%c PCI Secondary errors [",
- p->index, 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(irq);
- }
- #define SCHIZO_SAFARI_ERRLOG 0x10018UL
- #define SAFARI_ERRLOG_ERROUT 0x8000000000000000UL
- #define SAFARI_ERROR_BADCMD 0x4000000000000000UL
- #define SAFARI_ERROR_SSMDIS 0x2000000000000000UL
- #define SAFARI_ERROR_BADMA 0x1000000000000000UL
- #define SAFARI_ERROR_BADMB 0x0800000000000000UL
- #define SAFARI_ERROR_BADMC 0x0400000000000000UL
- #define SAFARI_ERROR_CPU1PS 0x0000000000002000UL
- #define SAFARI_ERROR_CPU1PB 0x0000000000001000UL
- #define SAFARI_ERROR_CPU0PS 0x0000000000000800UL
- #define SAFARI_ERROR_CPU0PB 0x0000000000000400UL
- #define SAFARI_ERROR_CIQTO 0x0000000000000200UL
- #define SAFARI_ERROR_LPQTO 0x0000000000000100UL
- #define SAFARI_ERROR_SFPQTO 0x0000000000000080UL
- #define SAFARI_ERROR_UFPQTO 0x0000000000000040UL
- #define SAFARI_ERROR_APERR 0x0000000000000020UL
- #define SAFARI_ERROR_UNMAP 0x0000000000000010UL
- #define SAFARI_ERROR_BUSERR 0x0000000000000004UL
- #define SAFARI_ERROR_TIMEOUT 0x0000000000000002UL
- #define SAFARI_ERROR_ILL 0x0000000000000001UL
- /* We only expect UNMAP errors here. The rest of the Safari errors
- * are marked fatal and thus cause a system reset.
- */
- static void 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->controller_regs + SCHIZO_SAFARI_ERRLOG);
- schizo_write(p->controller_regs + SCHIZO_SAFARI_ERRLOG,
- errlog & ~(SAFARI_ERRLOG_ERROUT));
- if (!(errlog & SAFARI_ERROR_UNMAP)) {
- printk("SCHIZO%d: Unexpected Safari error interrupt, errlog[%016lx]n",
- p->index, errlog);
- schizo_clear_other_err_intr(irq);
- return;
- }
- printk("SCHIZO%d: Safari interrupt, UNMAPPED error, interrogating IOMMUs.n",
- p->index);
- schizo_check_iommu_error(p, SAFARI_ERR);
- schizo_clear_other_err_intr(irq);
- }
- /* Nearly identical to PSYCHO equivalents... */
- #define SCHIZO_ECC_CTRL 0x10020UL
- #define SCHIZO_ECCCTRL_EE 0x8000000000000000 /* Enable ECC Checking */
- #define SCHIZO_ECCCTRL_UE 0x4000000000000000 /* Enable UE Interrupts */
- #define SCHIZO_ECCCTRL_CE 0x2000000000000000 /* Enable CE INterrupts */
- #define SCHIZO_SAFARI_ERRCTRL 0x10008UL
- #define SCHIZO_SAFERRCTRL_EN 0x8000000000000000UL
- #define SCHIZO_SAFARI_IRQCTRL 0x10010UL
- #define SCHIZO_SAFIRQCTRL_EN 0x8000000000000000UL
- #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 */
- #define SCHIZO_PCIA_CTRL (SCHIZO_PBM_A_REGS_OFF + 0x2000UL)
- #define SCHIZO_PCIB_CTRL (SCHIZO_PBM_B_REGS_OFF + 0x2000UL)
- #define SCHIZO_PCICTRL_BUS_UNUS (1UL << 63UL)
- #define SCHIZO_PCICTRL_ESLCK (1UL << 51UL)
- #define SCHIZO_PCICTRL_ERRSLOT (7UL << 48UL)
- #define SCHIZO_PCICTRL_TTO_ERR (1UL << 38UL)
- #define SCHIZO_PCICTRL_RTRY_ERR (1UL << 37UL)
- #define SCHIZO_PCICTRL_DTO_ERR (1UL << 36UL)
- #define SCHIZO_PCICTRL_SBH_ERR (1UL << 35UL)
- #define SCHIZO_PCICTRL_SERR (1UL << 34UL)
- #define SCHIZO_PCICTRL_PCISPD (1UL << 33UL)
- #define SCHIZO_PCICTRL_PTO (3UL << 24UL)
- #define SCHIZO_PCICTRL_DTO_INT (1UL << 19UL)
- #define SCHIZO_PCICTRL_SBH_INT (1UL << 18UL)
- #define SCHIZO_PCICTRL_EEN (1UL << 17UL)
- #define SCHIZO_PCICTRL_PARK (1UL << 16UL)
- #define SCHIZO_PCICTRL_PCIRST (1UL << 8UL)
- #define SCHIZO_PCICTRL_ARB (0x3fUL << 0UL)
- static void __init schizo_register_error_handlers(struct pci_controller_info *p)
- {
- struct pci_pbm_info *pbm_a = &p->pbm_A;
- struct pci_pbm_info *pbm_b = &p->pbm_B;
- unsigned long base = p->controller_regs;
- unsigned int irq, portid = p->portid;
- struct ino_bucket *bucket;
- u64 tmp;
- /* Build IRQs and register handlers. */
- irq = schizo_irq_build(pbm_b, NULL, (portid << 6) | SCHIZO_UE_INO);
- if (request_irq(irq, schizo_ue_intr,
- SA_SHIRQ, "SCHIZO UE", p) < 0) {
- prom_printf("SCHIZO%d: Cannot register UE interrupt.n",
- p->index);
- prom_halt();
- }
- bucket = __bucket(irq);
- tmp = readl(bucket->imap);
- upa_writel(tmp, (base + SCHIZO_PBM_B_REGS_OFF + schizo_imap_offset(SCHIZO_UE_INO) + 4));
- irq = schizo_irq_build(pbm_b, NULL, (portid << 6) | SCHIZO_CE_INO);
- if (request_irq(irq, schizo_ce_intr,
- SA_SHIRQ, "SCHIZO CE", p) < 0) {
- prom_printf("SCHIZO%d: Cannot register CE interrupt.n",
- p->index);
- prom_halt();
- }
- bucket = __bucket(irq);
- tmp = upa_readl(bucket->imap);
- upa_writel(tmp, (base + SCHIZO_PBM_B_REGS_OFF + schizo_imap_offset(SCHIZO_CE_INO) + 4));
- irq = schizo_irq_build(pbm_a, NULL, (portid << 6) | SCHIZO_PCIERR_A_INO);
- if (request_irq(irq, schizo_pcierr_intr,
- SA_SHIRQ, "SCHIZO PCIERR", pbm_a) < 0) {
- prom_printf("SCHIZO%d(PBMA): Cannot register PciERR interrupt.n",
- p->index);
- prom_halt();
- }
- bucket = __bucket(irq);
- tmp = upa_readl(bucket->imap);
- upa_writel(tmp, (base + SCHIZO_PBM_A_REGS_OFF + schizo_imap_offset(SCHIZO_PCIERR_A_INO) + 4));
- irq = schizo_irq_build(pbm_b, NULL, (portid << 6) | SCHIZO_PCIERR_B_INO);
- if (request_irq(irq, schizo_pcierr_intr,
- SA_SHIRQ, "SCHIZO PCIERR", pbm_b) < 0) {
- prom_printf("SCHIZO%d(PBMB): Cannot register PciERR interrupt.n",
- p->index);
- prom_halt();
- }
- bucket = __bucket(irq);
- tmp = upa_readl(bucket->imap);
- upa_writel(tmp, (base + SCHIZO_PBM_B_REGS_OFF + schizo_imap_offset(SCHIZO_PCIERR_B_INO) + 4));
- irq = schizo_irq_build(pbm_b, NULL, (portid << 6) | SCHIZO_SERR_INO);
- if (request_irq(irq, schizo_safarierr_intr,
- SA_SHIRQ, "SCHIZO SERR", p) < 0) {
- prom_printf("SCHIZO%d(PBMB): Cannot register SafariERR interrupt.n",
- p->index);
- prom_halt();
- }
- bucket = __bucket(irq);
- tmp = upa_readl(bucket->imap);
- upa_writel(tmp, (base + SCHIZO_PBM_B_REGS_OFF + schizo_imap_offset(SCHIZO_SERR_INO) + 4));
- /* Enable UE and CE interrupts for controller. */
- schizo_write(base + SCHIZO_ECC_CTRL,
- (SCHIZO_ECCCTRL_EE |
- SCHIZO_ECCCTRL_UE |
- SCHIZO_ECCCTRL_CE));
- /* Enable PCI Error interrupts and clear error
- * bits for each PBM.
- */
- tmp = schizo_read(base + SCHIZO_PCIA_CTRL);
- tmp |= (SCHIZO_PCICTRL_BUS_UNUS |
- SCHIZO_PCICTRL_ESLCK |
- SCHIZO_PCICTRL_TTO_ERR |
- SCHIZO_PCICTRL_RTRY_ERR |
- SCHIZO_PCICTRL_DTO_ERR |
- SCHIZO_PCICTRL_SBH_ERR |
- SCHIZO_PCICTRL_SERR |
- SCHIZO_PCICTRL_SBH_INT |
- SCHIZO_PCICTRL_EEN);
- schizo_write(base + SCHIZO_PCIA_CTRL, tmp);
- tmp = schizo_read(base + SCHIZO_PCIB_CTRL);
- tmp |= (SCHIZO_PCICTRL_BUS_UNUS |
- SCHIZO_PCICTRL_ESLCK |
- SCHIZO_PCICTRL_TTO_ERR |
- SCHIZO_PCICTRL_RTRY_ERR |
- SCHIZO_PCICTRL_DTO_ERR |
- SCHIZO_PCICTRL_SBH_ERR |
- SCHIZO_PCICTRL_SERR |
- SCHIZO_PCICTRL_SBH_INT |
- SCHIZO_PCICTRL_EEN);
- schizo_write(base + SCHIZO_PCIB_CTRL, tmp);
- schizo_write(base + SCHIZO_PBM_A_REGS_OFF + 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));
- schizo_write(base + SCHIZO_PBM_B_REGS_OFF + 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.
- */
- #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
- */
- schizo_write(base + SCHIZO_SAFARI_ERRCTRL,
- (SCHIZO_SAFERRCTRL_EN |
- (SAFARI_ERROR_BADCMD | SAFARI_ERROR_SSMDIS |
- SAFARI_ERROR_BADMA | SAFARI_ERROR_BADMB |
- SAFARI_ERROR_BADMC |
- SAFARI_ERROR_CIQTO |
- SAFARI_ERROR_LPQTO | SAFARI_ERROR_SFPQTO |
- SAFARI_ERROR_UFPQTO | SAFARI_ERROR_APERR |
- SAFARI_ERROR_BUSERR | SAFARI_ERROR_TIMEOUT |
- SAFARI_ERROR_ILL)));
- #else
- schizo_write(base + SCHIZO_SAFARI_ERRCTRL,
- (SCHIZO_SAFERRCTRL_EN |
- (SAFARI_ERROR_BADCMD | SAFARI_ERROR_SSMDIS |
- SAFARI_ERROR_BADMA | SAFARI_ERROR_BADMB |
- SAFARI_ERROR_BADMC |
- SAFARI_ERROR_CPU1PS | SAFARI_ERROR_CPU1PB |
- SAFARI_ERROR_CPU0PS | SAFARI_ERROR_CPU0PB |
- SAFARI_ERROR_CIQTO |
- SAFARI_ERROR_LPQTO | SAFARI_ERROR_SFPQTO |
- SAFARI_ERROR_UFPQTO | SAFARI_ERROR_APERR |
- SAFARI_ERROR_BUSERR | SAFARI_ERROR_TIMEOUT |
- SAFARI_ERROR_ILL)));
- #endif
- schizo_write(base + SCHIZO_SAFARI_IRQCTRL,
- (SCHIZO_SAFIRQCTRL_EN | (SAFARI_ERROR_UNMAP)));
- }
- /* We have to do the config space accesses by hand, thus... */
- #define PBM_BRIDGE_BUS 0x40
- #define PBM_BRIDGE_SUBORDINATE 0x41
- static void __init pbm_renumber(struct pci_pbm_info *pbm, u8 orig_busno)
- {
- u8 *addr, busno;
- int nbus;
- busno = pci_highest_busnum;
- nbus = pbm->pci_last_busno - pbm->pci_first_busno;
- addr = schizo_pci_config_mkaddr(pbm, orig_busno,
- 0, PBM_BRIDGE_BUS);
- pci_config_write8(addr, busno);
- addr = schizo_pci_config_mkaddr(pbm, busno,
- 0, PBM_BRIDGE_SUBORDINATE);
- pci_config_write8(addr, busno + nbus);
- pbm->pci_first_busno = busno;
- pbm->pci_last_busno = busno + nbus;
- pci_highest_busnum = busno + nbus + 1;
- do {
- pci_bus2pbm[busno++] = pbm;
- } while (nbus--);
- }
- /* We have to do the config space accesses by hand here since
- * the pci_bus2pbm array is not ready yet.
- */
- static void __init pbm_pci_bridge_renumber(struct pci_pbm_info *pbm,
- u8 busno)
- {
- u32 devfn, l, class;
- u8 hdr_type;
- int is_multi = 0;
- for(devfn = 0; devfn < 0xff; ++devfn) {
- u32 *dwaddr;
- u8 *baddr;
- if (PCI_FUNC(devfn) != 0 && is_multi == 0)
- continue;
- /* Anything there? */
- dwaddr = schizo_pci_config_mkaddr(pbm, busno, devfn, PCI_VENDOR_ID);
- l = 0xffffffff;
- pci_config_read32(dwaddr, &l);
- if (l == 0xffffffff || l == 0x00000000 ||
- l == 0x0000ffff || l == 0xffff0000) {
- is_multi = 0;
- continue;
- }
- baddr = schizo_pci_config_mkaddr(pbm, busno, devfn, PCI_HEADER_TYPE);
- pci_config_read8(baddr, &hdr_type);
- if (PCI_FUNC(devfn) == 0)
- is_multi = hdr_type & 0x80;
- dwaddr = schizo_pci_config_mkaddr(pbm, busno, devfn, PCI_CLASS_REVISION);
- class = 0xffffffff;
- pci_config_read32(dwaddr, &class);
- if ((class >> 16) == PCI_CLASS_BRIDGE_PCI) {
- u32 buses = 0xffffffff;
- dwaddr = schizo_pci_config_mkaddr(pbm, busno, devfn,
- PCI_PRIMARY_BUS);
- pci_config_read32(dwaddr, &buses);
- pbm_pci_bridge_renumber(pbm, (buses >> 8) & 0xff);
- buses &= 0xff000000;
- pci_config_write32(dwaddr, buses);
- }
- }
- }
- static void __init pbm_bridge_reconfigure(struct pci_controller_info *p)
- {
- struct pci_pbm_info *pbm;
- u8 *addr;
- /* Clear out primary/secondary/subordinate bus numbers on
- * all PCI-to-PCI bridges under each PBM. The generic bus
- * probing will fix them up.
- */
- pbm_pci_bridge_renumber(&p->pbm_B, p->pbm_B.pci_first_busno);
- pbm_pci_bridge_renumber(&p->pbm_A, p->pbm_A.pci_first_busno);
- /* Move PBM A out of the way. */
- pbm = &p->pbm_A;
- addr = schizo_pci_config_mkaddr(pbm, pbm->pci_first_busno,
- 0, PBM_BRIDGE_BUS);
- pci_config_write8(addr, 0xff);
- addr = schizo_pci_config_mkaddr(pbm, 0xff,
- 0, PBM_BRIDGE_SUBORDINATE);
- pci_config_write8(addr, 0xff);
- /* Now we can safely renumber both PBMs. */
- pbm_renumber(&p->pbm_B, p->pbm_B.pci_first_busno);
- pbm_renumber(&p->pbm_A, 0xff);
- }
- 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("SCHIZO: Critical allocation failure.n");
- 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)
- {
- pbm_bridge_reconfigure(p);
- pbm_config_busmastering(&p->pbm_B);
- p->pbm_B.is_66mhz_capable = 0;
- pbm_config_busmastering(&p->pbm_A);
- p->pbm_A.is_66mhz_capable = 1;
- 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.
- */
- schizo_register_error_handlers(p);
- }
- 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 |= 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 schizo_resource_adjust(struct pci_dev *pdev,
- struct resource *res,
- struct resource *root)
- {
- res->start += root->start;
- res->end += root->start;
- }
- /* Interrogate Safari match/mask registers to figure out where
- * PCI MEM, I/O, and Config space are for this PCI bus module.
- */
- #define SCHIZO_PCI_A_MEM_MATCH 0x00040UL
- #define SCHIZO_PCI_A_MEM_MASK 0x00048UL
- #define SCHIZO_PCI_A_IO_MATCH 0x00050UL
- #define SCHIZO_PCI_A_IO_MASK 0x00058UL
- #define SCHIZO_PCI_B_MEM_MATCH 0x00060UL
- #define SCHIZO_PCI_B_MEM_MASK 0x00068UL
- #define SCHIZO_PCI_B_IO_MATCH 0x00070UL
- #define SCHIZO_PCI_B_IO_MASK 0x00078UL
- static void schizo_determine_mem_io_space(struct pci_pbm_info *pbm,
- int is_pbm_a, unsigned long reg_base)
- {
- u64 mem_match, mem_mask;
- u64 io_match;
- u64 a;
- if (is_pbm_a) {
- mem_match = reg_base + SCHIZO_PCI_A_MEM_MATCH;
- io_match = reg_base + SCHIZO_PCI_A_IO_MATCH;
- } else {
- mem_match = reg_base + SCHIZO_PCI_B_MEM_MATCH;
- io_match = reg_base + SCHIZO_PCI_B_IO_MATCH;
- }
- mem_mask = mem_match + 0x8UL;
- a = schizo_read(mem_match) & ~0x8000000000000000UL;
- /* It should be 2GB in size but the decode is set for the full
- * 4GB so we have to add the 2G by hand.
- */
- pbm->mem_space.start = a;
- pbm->mem_space.end = a + 0x80000000;
- pbm->mem_space.flags = IORESOURCE_MEM;
- /* This 32MB area is divided into two pieces. The first
- * 16MB is Config space, the next 16MB is I/O space.
- */
- a = schizo_read(io_match) & ~0x8000000000000000UL;
- pbm->config_space = a;
- printk("SCHIZO PBM%c: Local PCI config space at %016lxn",
- (is_pbm_a ? 'A' : 'B'), pbm->config_space);
- a += (16UL * 1024UL * 1024UL);
- pbm->io_space.start = a;
- pbm->io_space.end = a + ((16UL * 1024UL * 1024UL) - 1UL);
- pbm->io_space.flags = IORESOURCE_IO;
- }
- static void __init pbm_register_toplevel_resources(struct pci_controller_info *p,
- struct pci_pbm_info *pbm)
- {
- char *name = pbm->name;
- sprintf(name, "SCHIZO%d PBM%c",
- p->index,
- (pbm == &p->pbm_A ? 'A' : 'B'));
- pbm->io_space.name = pbm->mem_space.name = 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_A (SCHIZO_PBM_A_REGS_OFF + 0x02800UL)
- #define SCHIZO_STRBUF_FLUSH_A (SCHIZO_PBM_A_REGS_OFF + 0x02808UL)
- #define SCHIZO_STRBUF_FSYNC_A (SCHIZO_PBM_A_REGS_OFF + 0x02810UL)
- #define SCHIZO_STRBUF_CTXFLUSH_A (SCHIZO_PBM_A_REGS_OFF + 0x02818UL)
- #define SCHIZO_STRBUF_CTXMATCH_A (SCHIZO_PBM_A_REGS_OFF + 0x10000UL)
- #define SCHIZO_STRBUF_CONTROL_B (SCHIZO_PBM_B_REGS_OFF + 0x02800UL)
- #define SCHIZO_STRBUF_FLUSH_B (SCHIZO_PBM_B_REGS_OFF + 0x02808UL)
- #define SCHIZO_STRBUF_FSYNC_B (SCHIZO_PBM_B_REGS_OFF + 0x02810UL)
- #define SCHIZO_STRBUF_CTXFLUSH_B (SCHIZO_PBM_B_REGS_OFF + 0x02818UL)
- #define SCHIZO_STRBUF_CTXMATCH_B (SCHIZO_PBM_B_REGS_OFF + 0x10000UL)
- static void schizo_pbm_strbuf_init(struct pci_controller_info *p,
- struct pci_pbm_info *pbm,
- int is_pbm_a)
- {
- unsigned long base = p->controller_regs;
- u64 control;
- /* SCHIZO has context flushing. */
- if (is_pbm_a) {
- pbm->stc.strbuf_control = base + SCHIZO_STRBUF_CONTROL_A;
- pbm->stc.strbuf_pflush = base + SCHIZO_STRBUF_FLUSH_A;
- pbm->stc.strbuf_fsync = base + SCHIZO_STRBUF_FSYNC_A;
- pbm->stc.strbuf_ctxflush = base + SCHIZO_STRBUF_CTXFLUSH_A;
- pbm->stc.strbuf_ctxmatch_base = base + SCHIZO_STRBUF_CTXMATCH_A;
- } else {
- pbm->stc.strbuf_control = base + SCHIZO_STRBUF_CONTROL_B;
- pbm->stc.strbuf_pflush = base + SCHIZO_STRBUF_FLUSH_B;
- pbm->stc.strbuf_fsync = base + SCHIZO_STRBUF_FSYNC_B;
- pbm->stc.strbuf_ctxflush = base + SCHIZO_STRBUF_CTXFLUSH_B;
- pbm->stc.strbuf_ctxmatch_base = base + SCHIZO_STRBUF_CTXMATCH_B;
- }
- 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_A (SCHIZO_PBM_A_REGS_OFF + 0x00200UL)
- #define SCHIZO_IOMMU_TSBBASE_A (SCHIZO_PBM_A_REGS_OFF + 0x00208UL)
- #define SCHIZO_IOMMU_FLUSH_A (SCHIZO_PBM_A_REGS_OFF + 0x00210UL)
- #define SCHIZO_IOMMU_CTXFLUSH_A (SCHIZO_PBM_A_REGS_OFF + 0x00218UL)
- #define SCHIZO_IOMMU_TAG_A (SCHIZO_PBM_A_REGS_OFF + 0x0a580UL)
- #define SCHIZO_IOMMU_DATA_A (SCHIZO_PBM_A_REGS_OFF + 0x0a600UL)
- #define SCHIZO_IOMMU_CONTROL_B (SCHIZO_PBM_B_REGS_OFF + 0x00200UL)
- #define SCHIZO_IOMMU_TSBBASE_B (SCHIZO_PBM_B_REGS_OFF + 0x00208UL)
- #define SCHIZO_IOMMU_FLUSH_B (SCHIZO_PBM_B_REGS_OFF + 0x00210UL)
- #define SCHIZO_IOMMU_CTXFLUSH_B (SCHIZO_PBM_B_REGS_OFF + 0x00218UL)
- #define SCHIZO_IOMMU_TAG_B (SCHIZO_PBM_B_REGS_OFF + 0x0a580UL)
- #define SCHIZO_IOMMU_DATA_B (SCHIZO_PBM_B_REGS_OFF + 0x0a600UL)
- static void schizo_pbm_iommu_init(struct pci_controller_info *p,
- struct pci_pbm_info *pbm,
- int is_pbm_a)
- {
- struct pci_iommu *iommu = pbm->iommu;
- unsigned long tsbbase, i, tagbase, database;
- u64 control;
- /* Setup initial software IOMMU state. */
- spin_lock_init(&iommu->lock);
- iommu->iommu_cur_ctx = 0;
- /* Register addresses, SCHIZO has iommu ctx flushing. */
- if (is_pbm_a) {
- iommu->iommu_control = p->controller_regs + SCHIZO_IOMMU_CONTROL_A;
- iommu->iommu_tsbbase = p->controller_regs + SCHIZO_IOMMU_TSBBASE_A;
- iommu->iommu_flush = p->controller_regs + SCHIZO_IOMMU_FLUSH_A;
- iommu->iommu_ctxflush = p->controller_regs + SCHIZO_IOMMU_CTXFLUSH_A;
- } else {
- iommu->iommu_control = p->controller_regs + SCHIZO_IOMMU_CONTROL_B;
- iommu->iommu_tsbbase = p->controller_regs + SCHIZO_IOMMU_TSBBASE_B;
- iommu->iommu_flush = p->controller_regs + SCHIZO_IOMMU_FLUSH_B;
- iommu->iommu_ctxflush = p->controller_regs + SCHIZO_IOMMU_CTXFLUSH_B;
- }
- /* We use the main control/status register of SCHIZO as the write
- * completion register.
- */
- iommu->write_complete_reg = p->controller_regs + 0x10000UL;
- /*
- * Invalidate TLB Entries.
- */
- control = schizo_read(iommu->iommu_control);
- control |= SCHIZO_IOMMU_CTRL_DENAB;
- schizo_write(iommu->iommu_control, control);
- if (is_pbm_a)
- tagbase = SCHIZO_IOMMU_TAG_A, database = SCHIZO_IOMMU_DATA_A;
- else
- tagbase = SCHIZO_IOMMU_TAG_B, database = SCHIZO_IOMMU_DATA_B;
- for(i = 0; i < 16; i++) {
- schizo_write(p->controller_regs + tagbase + (i * 8UL), 0);
- schizo_write(p->controller_regs + database + (i * 8UL), 0);
- }
- /* Leave diag mode enabled for full-flushing done
- * in pci_iommu.c
- */
- /* 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.
- */
- tsbbase = __get_free_pages(GFP_KERNEL, get_order(IO_TSB_SIZE));
- if (!tsbbase) {
- prom_printf("SCHIZO_IOMMU: Error, gfp(tsb) failed.n");
- prom_halt();
- }
- iommu->page_table = (iopte_t *)tsbbase;
- iommu->page_table_sz_bits = 17;
- iommu->page_table_map_base = 0xc0000000;
- iommu->dma_addr_mask = 0xffffffff;
- memset((char *)tsbbase, 0, IO_TSB_SIZE);
- /* 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);
- control |= (SCHIZO_IOMMU_TSBSZ_128K | SCHIZO_IOMMU_CTRL_ENAB);
- schizo_write(iommu->iommu_control, control);
- }
- static void schizo_pbm_init(struct pci_controller_info *p,
- int prom_node, int is_pbm_a)
- {
- unsigned int busrange[2];
- struct pci_pbm_info *pbm;
- int err;
- if (is_pbm_a)
- pbm = &p->pbm_A;
- else
- pbm = &p->pbm_B;
- schizo_determine_mem_io_space(pbm, is_pbm_a, p->controller_regs);
- pbm_register_toplevel_resources(p, pbm);
- pbm->parent = p;
- pbm->prom_node = prom_node;
- pbm->pci_first_slot = 1;
- 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 != -1)
- pbm->num_pbm_ranges =
- (err / sizeof(struct linux_prom_pci_ranges));
- else
- pbm->num_pbm_ranges = 0;
- 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("SCHIZO-PBM: Fatal error, no "
- "interrupt-map-mask.n");
- prom_halt();
- }
- } else {
- pbm->num_pbm_intmap = 0;
- memset(&pbm->pbm_intmask, 0, sizeof(pbm->pbm_intmask));
- }
- err = prom_getproperty(prom_node, "bus-range",
- (char *)&busrange[0],
- sizeof(busrange));
- if (err == 0 || err == -1) {
- prom_printf("SCHIZO-PBM: Fatal error, no bus-range.n");
- prom_halt();
- }
- pbm->pci_first_busno = busrange[0];
- pbm->pci_last_busno = busrange[1];
- schizo_pbm_iommu_init(p, pbm, is_pbm_a);
- schizo_pbm_strbuf_init(p, pbm, is_pbm_a);
- }
- #define SCHIZO_PCIA_IRQ_RETRY (SCHIZO_PBM_A_REGS_OFF + 0x1a00UL)
- #define SCHIZO_PCIB_IRQ_RETRY (SCHIZO_PBM_B_REGS_OFF + 0x1a00UL)
- #define SCHIZO_IRQ_RETRY_INF 0xffUL
- #define SCHIZO_PCIA_DIAG (SCHIZO_PBM_A_REGS_OFF + 0x2020UL)
- #define SCHIZO_PCIB_DIAG (SCHIZO_PBM_B_REGS_OFF + 0x2020UL)
- #define SCHIZO_PCIDIAG_D_BADECC (1UL << 10UL) /* Disable BAD ECC errors */
- #define SCHIZO_PCIDIAG_D_BYPASS (1UL << 9UL) /* Disable MMU bypass mode */
- #define SCHIZO_PCIDIAG_D_TTO (1UL << 8UL) /* Disable TTO errors */
- #define SCHIZO_PCIDIAG_D_RTRYARB (1UL << 7UL) /* Disable retry arbitration */
- #define SCHIZO_PCIDIAG_D_RETRY (1UL << 6UL) /* Disable retry limit */
- #define SCHIZO_PCIDIAG_D_INTSYNC (1UL << 5UL) /* Disable interrupt/DMA synch */
- #define SCHIZO_PCIDIAG_I_DMA_PARITY (1UL << 3UL) /* Invert DMA parity */
- #define SCHIZO_PCIDIAG_I_PIOD_PARITY (1UL << 2UL) /* Invert PIO data parity */
- #define SCHIZO_PCIDIAG_I_PIOA_PARITY (1UL << 1U)L /* Invert PIO address parity */
- static void schizo_controller_hwinit(struct pci_controller_info *p)
- {
- unsigned long pbm_a_base, pbm_b_base;
- u64 tmp;
- pbm_a_base = p->controller_regs + SCHIZO_PBM_A_REGS_OFF;
- pbm_b_base = p->controller_regs + SCHIZO_PBM_B_REGS_OFF;
- /* Set IRQ retry to infinity. */
- schizo_write(p->controller_regs + SCHIZO_PCIA_IRQ_RETRY,
- SCHIZO_IRQ_RETRY_INF);
- schizo_write(p->controller_regs + SCHIZO_PCIB_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(p->controller_regs + SCHIZO_PCIA_CTRL);
- tmp |= SCHIZO_PCICTRL_ARB;
- tmp &= ~SCHIZO_PCICTRL_PTO;
- schizo_write(p->controller_regs + SCHIZO_PCIA_CTRL, tmp);
- tmp = schizo_read(p->controller_regs + SCHIZO_PCIB_CTRL);
- tmp |= SCHIZO_PCICTRL_ARB;
- tmp &= ~SCHIZO_PCICTRL_PTO;
- schizo_write(p->controller_regs + SCHIZO_PCIB_CTRL, tmp);
- /* Disable TTO error reporting (won't happen anyway since we
- * disabled the PCI interval timer above) and retry arbitration
- * (can cause hangs in some Schizo revisions).
- */
- tmp = schizo_read(p->controller_regs + SCHIZO_PCIA_DIAG);
- tmp |= (SCHIZO_PCIDIAG_D_TTO | SCHIZO_PCIDIAG_D_RTRYARB);
- schizo_write(p->controller_regs + SCHIZO_PCIA_DIAG, tmp);
- tmp = schizo_read(p->controller_regs + SCHIZO_PCIB_DIAG);
- tmp |= (SCHIZO_PCIDIAG_D_TTO | SCHIZO_PCIDIAG_D_RTRYARB);
- schizo_write(p->controller_regs + SCHIZO_PCIB_DIAG, tmp);
- }
- void __init schizo_init(int node, char *model_name)
- {
- struct linux_prom64_registers pr_regs[3];
- struct pci_controller_info *p;
- struct pci_iommu *iommu;
- unsigned long flags;
- u32 portid;
- int is_pbm_a, err;
- portid = prom_getintdefault(node, "portid", 0xff);
- spin_lock_irqsave(&pci_controller_lock, flags);
- for(p = pci_controller_root; p; p = p->next) {
- if (p->portid == portid) {
- spin_unlock_irqrestore(&pci_controller_lock, flags);
- is_pbm_a = (p->pbm_A.prom_node == 0);
- schizo_pbm_init(p, node, is_pbm_a);
- return;
- }
- }
- spin_unlock_irqrestore(&pci_controller_lock, flags);
- 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;
- 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 = portid;
- p->index = pci_num_controllers++;
- p->pbms_same_domain = 0;
- p->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;
- /* Three OBP regs:
- * 1) PBM controller regs
- * 2) Schizo front-end controller regs (same for both PBMs)
- * 3) PBM PCI config space
- */
- err = prom_getproperty(node, "reg",
- (char *)&pr_regs[0],
- sizeof(pr_regs));
- if (err == 0 || err == -1) {
- prom_printf("SCHIZO: Fatal error, no reg property.n");
- prom_halt();
- }
- p->controller_regs = pr_regs[1].phys_addr - 0x10000UL;
- printk("PCI: Found SCHIZO, control regs at %016lxn",
- p->controller_regs);
- /* Like PSYCHO we have a 2GB aligned area for memory space. */
- pci_memspace_mask = 0x7fffffffUL;
- /* Init core controller. */
- schizo_controller_hwinit(p);
- is_pbm_a = ((pr_regs[0].phys_addr & 0x00700000) == 0x00600000);
- schizo_pbm_init(p, node, is_pbm_a);
- }