| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| David S. Miller | 3433 | 54.42% | 42 | 38.18% |
| Linus Torvalds | 2257 | 35.78% | 9 | 8.18% |
| Linus Torvalds (pre-git) | 504 | 7.99% | 40 | 36.36% |
| Grant C. Likely | 68 | 1.08% | 6 | 5.45% |
| Rob Herring | 23 | 0.36% | 2 | 1.82% |
| Stephen Rothwell | 4 | 0.06% | 1 | 0.91% |
| Thomas Gleixner | 4 | 0.06% | 1 | 0.91% |
| Petr Holasek | 3 | 0.05% | 1 | 0.91% |
| Paul Gortmaker | 3 | 0.05% | 1 | 0.91% |
| Björn Helgaas | 2 | 0.03% | 1 | 0.91% |
| Eric Sesterhenn / Snakebyte | 2 | 0.03% | 1 | 0.91% |
| Sam Ravnborg | 2 | 0.03% | 2 | 1.82% |
| Greg Kroah-Hartman | 1 | 0.02% | 1 | 0.91% |
| Anshuman Khandual | 1 | 0.02% | 1 | 0.91% |
| Joe Perches | 1 | 0.02% | 1 | 0.91% |
| Total | 6308 | 110 |
// SPDX-License-Identifier: GPL-2.0 /* pci_schizo.c: SCHIZO/TOMATILLO specific PCI controller support. * * Copyright (C) 2001, 2002, 2003, 2007, 2008 David S. Miller (davem@davemloft.net) */ #include <linux/kernel.h> #include <linux/types.h> #include <linux/pci.h> #include <linux/init.h> #include <linux/slab.h> #include <linux/export.h> #include <linux/interrupt.h> #include <linux/of.h> #include <linux/of_platform.h> #include <linux/platform_device.h> #include <linux/property.h> #include <linux/numa.h> #include <asm/iommu.h> #include <asm/irq.h> #include <asm/pstate.h> #include <asm/prom.h> #include <asm/upa.h> #include "pci_impl.h" #include "iommu_common.h" #define DRIVER_NAME "schizo" #define PFX DRIVER_NAME ": " /* 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)); } /* 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 */ #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 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 * its 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 = upa_readq(strbuf->strbuf_control); upa_writeq((control | SCHIZO_STRBUF_CTRL_DENAB), strbuf->strbuf_control); for (i = 0; i < 128; i++) { unsigned long val; val = upa_readq(err_base + (i * 8UL)); upa_writeq(0UL, err_base + (i * 8UL)); stc_error_buf[i] = val; } for (i = 0; i < 16; i++) { stc_tag_buf[i] = upa_readq(tag_base + (i * 8UL)); stc_line_buf[i] = upa_readq(line_base + (i * 8UL)); upa_writeq(0UL, tag_base + (i * 8UL)); upa_writeq(0UL, line_base + (i * 8UL)); } /* OK, state is logged, exit diagnostic mode. */ upa_writeq(control, strbuf->strbuf_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 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 = upa_readq(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; upa_writeq(control, iommu->iommu_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 * its 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. */ upa_writeq(control | SCHIZO_IOMMU_CTRL_DENAB, iommu->iommu_control); base = pbm->pbm_regs; for (i = 0; i < 16; i++) { iommu_tag[i] = upa_readq(base + SCHIZO_IOMMU_TAG + (i * 8UL)); iommu_data[i] = upa_readq(base + SCHIZO_IOMMU_DATA + (i * 8UL)); /* Now clear out the entry. */ upa_writeq(0, base + SCHIZO_IOMMU_TAG + (i * 8UL)); upa_writeq(0, base + SCHIZO_IOMMU_DATA + (i * 8UL)); } /* Leave diagnostic mode. */ upa_writeq(control, iommu->iommu_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_pbm_info *pbm, enum schizo_error_type type) { schizo_check_iommu_error_pbm(pbm, type); if (pbm->sibling) schizo_check_iommu_error_pbm(pbm->sibling, 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 pci_pbm_info *pbm = dev_id; unsigned long afsr_reg = pbm->controller_regs + SCHIZO_UE_AFSR; unsigned long afar_reg = pbm->controller_regs + SCHIZO_UE_AFAR; unsigned long afsr, afar, error_bits; int reported, limit; /* Latch uncorrectable error status. */ afar = upa_readq(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 = upa_readq(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; upa_writeq(error_bits, afsr_reg); /* Log the error. */ printk("%s: Uncorrectable Error, primary error type[%s]\n", pbm->name, (((error_bits & SCHIZO_UEAFSR_PPIO) ? "PIO" : ((error_bits & SCHIZO_UEAFSR_PDRD) ? "DMA Read" : ((error_bits & SCHIZO_UEAFSR_PDWR) ? "DMA Write" : "???"))))); printk("%s: bytemask[%04lx] qword_offset[%lx] SAFARI_AID[%02lx]\n", pbm->name, (afsr & SCHIZO_UEAFSR_BMSK) >> 32UL, (afsr & SCHIZO_UEAFSR_QOFF) >> 30UL, (afsr & SCHIZO_UEAFSR_AID) >> 24UL); printk("%s: partial[%d] owned_in[%d] mtag[%lx] mtag_synd[%lx] ecc_sync[%lx]\n", pbm->name, (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("%s: UE AFAR [%016lx]\n", pbm->name, afar); printk("%s: UE Secondary errors [", pbm->name); 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(pbm, UE_ERR); 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 pci_pbm_info *pbm = dev_id; unsigned long afsr_reg = pbm->controller_regs + SCHIZO_CE_AFSR; unsigned long afar_reg = pbm->controller_regs + SCHIZO_CE_AFAR; unsigned long afsr, afar, error_bits; int reported, limit; /* Latch error status. */ afar = upa_readq(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 = upa_readq(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; upa_writeq(error_bits, afsr_reg); /* Log the error. */ printk("%s: Correctable Error, primary error type[%s]\n", pbm->name, (((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("%s: bytemask[%04lx] qword_offset[%lx] SAFARI_AID[%02lx]\n", pbm->name, (afsr & SCHIZO_UEAFSR_BMSK) >> 32UL, (afsr & SCHIZO_UEAFSR_QOFF) >> 30UL, (afsr & SCHIZO_UEAFSR_AID) >> 24UL); printk("%s: partial[%d] owned_in[%d] mtag[%lx] mtag_synd[%lx] ecc_sync[%lx]\n", pbm->name, (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("%s: CE AFAR [%016lx]\n", pbm->name, afar); printk("%s: CE Secondary errors [", pbm->name); reported = 0; if (afsr & SCHIZO_CEAFSR_SPIO) { reported++; printk("(PIO)"); } if (afsr & SCHIZO_CEAFSR_SDMA) { reported++; printk("(DMA)"); } if (!reported) printk("(none)"); printk("]\n"); 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_DTO_INT (1UL << 61UL) /* Tomatillo */ #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; u32 stat; csr_reg = pbm->pbm_regs + SCHIZO_PCI_CTRL; csr = upa_readq(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. */ upa_writeq(csr, csr_reg); /* 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; } pbm->pci_ops->read(pbm->pci_bus, 0, PCI_STATUS, 2, &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); pbm->pci_ops->write(pbm->pci_bus, 0, PCI_STATUS, 2, 0xffff); ret = IRQ_HANDLED; } return ret; } static irqreturn_t schizo_pcierr_intr(int irq, void *dev_id) { struct pci_pbm_info *pbm = dev_id; 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 = upa_readq(afar_reg); afsr = upa_readq(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); upa_writeq(error_bits, afsr_reg); /* 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(pbm, PCI_ERR); pci_scan_for_target_abort(pbm, pbm->pci_bus); } if (error_bits & (SCHIZO_PCIAFSR_PMA | SCHIZO_PCIAFSR_SMA)) pci_scan_for_master_abort(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(pbm, pbm->pci_bus); 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 pci_pbm_info *pbm = dev_id; u64 errlog; errlog = upa_readq(pbm->controller_regs + SCHIZO_SAFARI_ERRLOG); upa_writeq(errlog & ~(SAFARI_ERRLOG_ERROUT), pbm->controller_regs + SCHIZO_SAFARI_ERRLOG); if (!(errlog & BUS_ERROR_UNMAP)) { printk("%s: Unexpected Safari/JBUS error interrupt, errlog[%016llx]\n", pbm->name, errlog); return IRQ_HANDLED; } printk("%s: Safari/JBUS interrupt, UNMAPPED error, interrogating IOMMUs.\n", pbm->name); schizo_check_iommu_error(pbm, SAFARI_ERR); 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 static int pbm_routes_this_ino(struct pci_pbm_info *pbm, u32 ino) { ino &= IMAP_INO; if (pbm->ino_bitmap & (1UL << ino)) return 1; return 0; } /* 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 separate * 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 tomatillo_register_error_handlers(struct pci_pbm_info *pbm) { struct platform_device *op = of_find_device_by_node(pbm->op->dev.of_node); u64 tmp, err_mask, err_no_mask; int err; /* Tomatillo IRQ property layout is: * 0: PCIERR * 1: UE ERR * 2: CE ERR * 3: SERR * 4: POWER FAIL? */ if (pbm_routes_this_ino(pbm, SCHIZO_UE_INO)) { err = request_irq(op->archdata.irqs[1], schizo_ue_intr, 0, "TOMATILLO_UE", pbm); if (err) printk(KERN_WARNING "%s: Could not register UE, " "err=%d\n", pbm->name, err); } if (pbm_routes_this_ino(pbm, SCHIZO_CE_INO)) { err = request_irq(op->archdata.irqs[2], schizo_ce_intr, 0, "TOMATILLO_CE", pbm); if (err) printk(KERN_WARNING "%s: Could not register CE, " "err=%d\n", pbm->name, err); } err = 0; if (pbm_routes_this_ino(pbm, SCHIZO_PCIERR_A_INO)) { err = request_irq(op->archdata.irqs[0], schizo_pcierr_intr, 0, "TOMATILLO_PCIERR", pbm); } else if (pbm_routes_this_ino(pbm, SCHIZO_PCIERR_B_INO)) { err = request_irq(op->archdata.irqs[0], schizo_pcierr_intr, 0, "TOMATILLO_PCIERR", pbm); } if (err) printk(KERN_WARNING "%s: Could not register PCIERR, " "err=%d\n", pbm->name, err); if (pbm_routes_this_ino(pbm, SCHIZO_SERR_INO)) { err = request_irq(op->archdata.irqs[3], schizo_safarierr_intr, 0, "TOMATILLO_SERR", pbm); if (err) printk(KERN_WARNING "%s: Could not register SERR, " "err=%d\n", pbm->name, err); } /* Enable UE and CE interrupts for controller. */ upa_writeq((SCHIZO_ECCCTRL_EE | SCHIZO_ECCCTRL_UE | SCHIZO_ECCCTRL_CE), pbm->controller_regs + SCHIZO_ECC_CTRL); /* 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 = upa_readq(pbm->pbm_regs + SCHIZO_PCI_CTRL); tmp |= err_mask; tmp &= ~err_no_mask; upa_writeq(tmp, pbm->pbm_regs + SCHIZO_PCI_CTRL); 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); upa_writeq(err_mask, pbm->pbm_regs + SCHIZO_PCI_AFSR); 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); upa_writeq((SCHIZO_SAFERRCTRL_EN | err_mask), pbm->controller_regs + SCHIZO_SAFARI_ERRCTRL); upa_writeq((SCHIZO_SAFIRQCTRL_EN | (BUS_ERROR_UNMAP)), pbm->controller_regs + SCHIZO_SAFARI_IRQCTRL); } static void schizo_register_error_handlers(struct pci_pbm_info *pbm) { struct platform_device *op = of_find_device_by_node(pbm->op->dev.of_node); u64 tmp, err_mask, err_no_mask; int err; /* Schizo IRQ property layout is: * 0: PCIERR * 1: UE ERR * 2: CE ERR * 3: SERR * 4: POWER FAIL? */ if (pbm_routes_this_ino(pbm, SCHIZO_UE_INO)) { err = request_irq(op->archdata.irqs[1], schizo_ue_intr, 0, "SCHIZO_UE", pbm); if (err) printk(KERN_WARNING "%s: Could not register UE, " "err=%d\n", pbm->name, err); } if (pbm_routes_this_ino(pbm, SCHIZO_CE_INO)) { err = request_irq(op->archdata.irqs[2], schizo_ce_intr, 0, "SCHIZO_CE", pbm); if (err) printk(KERN_WARNING "%s: Could not register CE, " "err=%d\n", pbm->name, err); } err = 0; if (pbm_routes_this_ino(pbm, SCHIZO_PCIERR_A_INO)) { err = request_irq(op->archdata.irqs[0], schizo_pcierr_intr, 0, "SCHIZO_PCIERR", pbm); } else if (pbm_routes_this_ino(pbm, SCHIZO_PCIERR_B_INO)) { err = request_irq(op->archdata.irqs[0], schizo_pcierr_intr, 0, "SCHIZO_PCIERR", pbm); } if (err) printk(KERN_WARNING "%s: Could not register PCIERR, " "err=%d\n", pbm->name, err); if (pbm_routes_this_ino(pbm, SCHIZO_SERR_INO)) { err = request_irq(op->archdata.irqs[3], schizo_safarierr_intr, 0, "SCHIZO_SERR", pbm); if (err) printk(KERN_WARNING "%s: Could not register SERR, " "err=%d\n", pbm->name, err); } /* Enable UE and CE interrupts for controller. */ upa_writeq((SCHIZO_ECCCTRL_EE | SCHIZO_ECCCTRL_UE | SCHIZO_ECCCTRL_CE), pbm->controller_regs + SCHIZO_ECC_CTRL); 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 = upa_readq(pbm->pbm_regs + SCHIZO_PCI_CTRL); tmp |= err_mask; tmp &= ~err_no_mask; upa_writeq(tmp, pbm->pbm_regs + SCHIZO_PCI_CTRL); upa_writeq((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), pbm->pbm_regs + SCHIZO_PCI_AFSR); /* 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 upa_writeq((SCHIZO_SAFERRCTRL_EN | err_mask), pbm->controller_regs + SCHIZO_SAFARI_ERRCTRL); } static void 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 schizo_scan_bus(struct pci_pbm_info *pbm, struct device *parent) { pbm_config_busmastering(pbm); pbm->is_66mhz_capable = (of_find_property(pbm->op->dev.of_node, "66mhz-capable", NULL) != NULL); pbm->pci_bus = pci_scan_one_pbm(pbm, parent); if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO) tomatillo_register_error_handlers(pbm); else schizo_register_error_handlers(pbm); } #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 = upa_readq(pbm->stc.strbuf_control); control &= ~(SCHIZO_STRBUF_CTRL_LPTR | SCHIZO_STRBUF_CTRL_LENAB | SCHIZO_STRBUF_CTRL_DENAB); control |= SCHIZO_STRBUF_CTRL_ENAB; upa_writeq(control, pbm->stc.strbuf_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 int schizo_pbm_iommu_init(struct pci_pbm_info *pbm) { static const u32 vdma_default[] = { 0xc0000000, 0x40000000 }; unsigned long i, tagbase, database; struct iommu *iommu = pbm->iommu; int tsbsize, err; const u32 *vdma; u32 dma_mask; u64 control; vdma = of_get_property(pbm->op->dev.of_node, "virtual-dma", NULL); if (!vdma) vdma = vdma_default; dma_mask = vdma[0]; switch (vdma[1]) { case 0x20000000: dma_mask |= 0x1fffffff; tsbsize = 64; break; case 0x40000000: dma_mask |= 0x3fffffff; tsbsize = 128; break; case 0x80000000: dma_mask |= 0x7fffffff; tsbsize = 128; break; default: printk(KERN_ERR PFX "Strange virtual-dma size.\n"); return -EINVAL; } /* 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_tags = iommu->iommu_flush + (0xa580UL - 0x0210UL); 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 = upa_readq(iommu->iommu_control); control |= SCHIZO_IOMMU_CTRL_DENAB; upa_writeq(control, iommu->iommu_control); tagbase = SCHIZO_IOMMU_TAG, database = SCHIZO_IOMMU_DATA; for (i = 0; i < 16; i++) { upa_writeq(0, pbm->pbm_regs + tagbase + (i * 8UL)); upa_writeq(0, pbm->pbm_regs + database + (i * 8UL)); } /* Leave diag mode enabled for full-flushing done * in pci_iommu.c */ err = iommu_table_init(iommu, tsbsize * 8 * 1024, vdma[0], dma_mask, pbm->numa_node); if (err) { printk(KERN_ERR PFX "iommu_table_init() fails with %d\n", err); return err; } upa_writeq(__pa(iommu->page_table), iommu->iommu_tsbbase); control = upa_readq(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; upa_writeq(control, iommu->iommu_control); return 0; } #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 schizo_pbm_hw_init(struct pci_pbm_info *pbm) { u64 tmp; upa_writeq(5, pbm->pbm_regs + SCHIZO_PCI_IRQ_RETRY); tmp = upa_readq(pbm->pbm_regs + SCHIZO_PCI_CTRL); /* Enable arbiter for all PCI slots. */ tmp |= 0xff; if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO && pbm->chip_version >= 0x2) tmp |= 0x3UL << SCHIZO_PCICTRL_PTO_SHIFT; if (!of_property_read_bool(pbm->op->dev.of_node, "no-bus-parking")) tmp |= SCHIZO_PCICTRL_PARK; else tmp &= ~SCHIZO_PCICTRL_PARK; if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO && pbm->chip_version <= 0x1) tmp |= SCHIZO_PCICTRL_DTO_INT; else tmp &= ~SCHIZO_PCICTRL_DTO_INT; if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO) tmp |= (SCHIZO_PCICTRL_MRM_PREF | SCHIZO_PCICTRL_RDO_PREF | SCHIZO_PCICTRL_RDL_PREF); upa_writeq(tmp, pbm->pbm_regs + SCHIZO_PCI_CTRL); tmp = upa_readq(pbm->pbm_regs + SCHIZO_PCI_DIAG); tmp &= ~(SCHIZO_PCIDIAG_D_RTRYARB | SCHIZO_PCIDIAG_D_RETRY | SCHIZO_PCIDIAG_D_INTSYNC); upa_writeq(tmp, pbm->pbm_regs + SCHIZO_PCI_DIAG); 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); upa_writeq(tmp, pbm->pbm_regs + TOMATILLO_PCI_IOC_CSR); } } static int schizo_pbm_init(struct pci_pbm_info *pbm, struct platform_device *op, u32 portid, int chip_type) { const struct linux_prom64_registers *regs; struct device_node *dp = op->dev.of_node; const char *chipset_name; 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 */ regs = of_get_property(dp, "reg", NULL); pbm->next = pci_pbm_root; pci_pbm_root = pbm; pbm->numa_node = NUMA_NO_NODE; pbm->pci_ops = &sun4u_pci_ops; pbm->config_space_reg_bits = 8; pbm->index = pci_num_pbms++; pbm->portid = portid; pbm->op = op; pbm->chip_type = chip_type; pbm->chip_version = of_getintprop_default(dp, "version#", 0); pbm->chip_revision = of_getintprop_default(dp, "module-version#", 0); pbm->pbm_regs = regs[0].phys_addr; pbm->controller_regs = regs[1].phys_addr - 0x10000UL; if (chip_type == PBM_CHIP_TYPE_TOMATILLO) pbm->sync_reg = regs[3].phys_addr + 0x1a18UL; pbm->name = dp->full_name; printk("%s: %s PCI Bus Module ver[%x:%x]\n", pbm->name, chipset_name, pbm->chip_version, pbm->chip_revision); schizo_pbm_hw_init(pbm); pci_determine_mem_io_space(pbm); pci_get_pbm_props(pbm); err = schizo_pbm_iommu_init(pbm); if (err) return err; schizo_pbm_strbuf_init(pbm); schizo_scan_bus(pbm, &op->dev); return 0; } 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 struct pci_pbm_info *schizo_find_sibling(u32 portid, int chip_type) { struct pci_pbm_info *pbm; for (pbm = pci_pbm_root; pbm; pbm = pbm->next) { if (portid_compare(pbm->portid, portid, chip_type)) return pbm; } return NULL; } static int __schizo_init(struct platform_device *op, unsigned long chip_type) { struct device_node *dp = op->dev.of_node; struct pci_pbm_info *pbm; struct iommu *iommu; u32 portid; int err; portid = of_getintprop_default(dp, "portid", 0xff); err = -ENOMEM; pbm = kzalloc(sizeof(*pbm), GFP_KERNEL); if (!pbm) { printk(KERN_ERR PFX "Cannot allocate pci_pbm_info.\n"); goto out_err; } pbm->sibling = schizo_find_sibling(portid, chip_type); iommu = kzalloc(sizeof(struct iommu), GFP_KERNEL); if (!iommu) { printk(KERN_ERR PFX "Cannot allocate PBM A iommu.\n"); goto out_free_pbm; } pbm->iommu = iommu; if (schizo_pbm_init(pbm, op, portid, chip_type)) goto out_free_iommu; if (pbm->sibling) pbm->sibling->sibling = pbm; dev_set_drvdata(&op->dev, pbm); return 0; out_free_iommu: kfree(pbm->iommu); out_free_pbm: kfree(pbm); out_err: return err; } static int schizo_probe(struct platform_device *op) { unsigned long chip_type = (unsigned long)device_get_match_data(&op->dev); if (!chip_type) return -EINVAL; return __schizo_init(op, chip_type); } /* The ordering of this table is very important. Some Tomatillo * nodes announce that they are compatible with both pci108e,a801 * and pci108e,8001. So list the chips in reverse chronological * order. */ static const struct of_device_id schizo_match[] = { { .name = "pci", .compatible = "pci108e,a801", .data = (void *) PBM_CHIP_TYPE_TOMATILLO, }, { .name = "pci", .compatible = "pci108e,8002", .data = (void *) PBM_CHIP_TYPE_SCHIZO_PLUS, }, { .name = "pci", .compatible = "pci108e,8001", .data = (void *) PBM_CHIP_TYPE_SCHIZO, }, {}, }; static struct platform_driver schizo_driver = { .driver = { .name = DRIVER_NAME, .of_match_table = schizo_match, }, .probe = schizo_probe, }; static int __init schizo_init(void) { return platform_driver_register(&schizo_driver); } subsys_initcall(schizo_init);
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