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-rw-r--r--arch/sparc64/kernel/psycho_common.c470
1 files changed, 0 insertions, 470 deletions
diff --git a/arch/sparc64/kernel/psycho_common.c b/arch/sparc64/kernel/psycho_common.c
deleted file mode 100644
index 790996428c1..00000000000
--- a/arch/sparc64/kernel/psycho_common.c
+++ /dev/null
@@ -1,470 +0,0 @@
-/* psycho_common.c: Code common to PSYCHO and derivative PCI controllers.
- *
- * Copyright (C) 2008 David S. Miller <davem@davemloft.net>
- */
-#include <linux/kernel.h>
-#include <linux/interrupt.h>
-
-#include <asm/upa.h>
-
-#include "pci_impl.h"
-#include "iommu_common.h"
-#include "psycho_common.h"
-
-#define PSYCHO_STRBUF_CTRL_DENAB 0x0000000000000002UL
-#define PSYCHO_STCERR_WRITE 0x0000000000000002UL
-#define PSYCHO_STCERR_READ 0x0000000000000001UL
-#define PSYCHO_STCTAG_PPN 0x0fffffff00000000UL
-#define PSYCHO_STCTAG_VPN 0x00000000ffffe000UL
-#define PSYCHO_STCTAG_VALID 0x0000000000000002UL
-#define PSYCHO_STCTAG_WRITE 0x0000000000000001UL
-#define PSYCHO_STCLINE_LINDX 0x0000000001e00000UL
-#define PSYCHO_STCLINE_SPTR 0x00000000001f8000UL
-#define PSYCHO_STCLINE_LADDR 0x0000000000007f00UL
-#define PSYCHO_STCLINE_EPTR 0x00000000000000fcUL
-#define PSYCHO_STCLINE_VALID 0x0000000000000002UL
-#define PSYCHO_STCLINE_FOFN 0x0000000000000001UL
-
-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];
-
-static void psycho_check_stc_error(struct pci_pbm_info *pbm)
-{
- unsigned long err_base, tag_base, line_base;
- struct strbuf *strbuf = &pbm->stc;
- u64 control;
- int i;
-
- if (!strbuf->strbuf_control)
- return;
-
- err_base = strbuf->strbuf_err_stat;
- tag_base = strbuf->strbuf_tag_diag;
- line_base = strbuf->strbuf_line_diag;
-
- 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 = upa_readq(strbuf->strbuf_control);
- upa_writeq(control | PSYCHO_STRBUF_CTRL_DENAB, strbuf->strbuf_control);
- for (i = 0; i < 128; i++) {
- u64 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++) {
- u64 errval = stc_error_buf[j];
- if (errval != 0) {
- saw_error++;
- printk(KERN_ERR "%s: STC_ERR(%d)[wr(%d)"
- "rd(%d)]\n",
- pbm->name,
- j,
- (errval & PSYCHO_STCERR_WRITE) ? 1 : 0,
- (errval & PSYCHO_STCERR_READ) ? 1 : 0);
- }
- }
- if (saw_error != 0) {
- u64 tagval = stc_tag_buf[i];
- u64 lineval = stc_line_buf[i];
- printk(KERN_ERR "%s: STC_TAG(%d)[PA(%016lx)VA(%08lx)"
- "V(%d)W(%d)]\n",
- pbm->name,
- i,
- ((tagval & PSYCHO_STCTAG_PPN) >> 19UL),
- (tagval & PSYCHO_STCTAG_VPN),
- ((tagval & PSYCHO_STCTAG_VALID) ? 1 : 0),
- ((tagval & PSYCHO_STCTAG_WRITE) ? 1 : 0));
- printk(KERN_ERR "%s: STC_LINE(%d)[LIDX(%lx)SP(%lx)"
- "LADDR(%lx)EP(%lx)V(%d)FOFN(%d)]\n",
- pbm->name,
- i,
- ((lineval & PSYCHO_STCLINE_LINDX) >> 21UL),
- ((lineval & PSYCHO_STCLINE_SPTR) >> 15UL),
- ((lineval & PSYCHO_STCLINE_LADDR) >> 8UL),
- ((lineval & PSYCHO_STCLINE_EPTR) >> 2UL),
- ((lineval & PSYCHO_STCLINE_VALID) ? 1 : 0),
- ((lineval & PSYCHO_STCLINE_FOFN) ? 1 : 0));
- }
- }
-
- spin_unlock(&stc_buf_lock);
-}
-
-#define PSYCHO_IOMMU_TAG 0xa580UL
-#define PSYCHO_IOMMU_DATA 0xa600UL
-
-static void psycho_record_iommu_tags_and_data(struct pci_pbm_info *pbm,
- u64 *tag, u64 *data)
-{
- int i;
-
- for (i = 0; i < 16; i++) {
- unsigned long base = pbm->controller_regs;
- unsigned long off = i * 8UL;
-
- tag[i] = upa_readq(base + PSYCHO_IOMMU_TAG+off);
- data[i] = upa_readq(base + PSYCHO_IOMMU_DATA+off);
-
- /* Now clear out the entry. */
- upa_writeq(0, base + PSYCHO_IOMMU_TAG + off);
- upa_writeq(0, base + PSYCHO_IOMMU_DATA + off);
- }
-}
-
-#define PSYCHO_IOMMU_TAG_ERRSTS (0x3UL << 23UL)
-#define PSYCHO_IOMMU_TAG_ERR (0x1UL << 22UL)
-#define PSYCHO_IOMMU_TAG_WRITE (0x1UL << 21UL)
-#define PSYCHO_IOMMU_TAG_STREAM (0x1UL << 20UL)
-#define PSYCHO_IOMMU_TAG_SIZE (0x1UL << 19UL)
-#define PSYCHO_IOMMU_TAG_VPAGE 0x7ffffUL
-#define PSYCHO_IOMMU_DATA_VALID (1UL << 30UL)
-#define PSYCHO_IOMMU_DATA_CACHE (1UL << 28UL)
-#define PSYCHO_IOMMU_DATA_PPAGE 0xfffffffUL
-
-static void psycho_dump_iommu_tags_and_data(struct pci_pbm_info *pbm,
- u64 *tag, u64 *data)
-{
- int i;
-
- for (i = 0; i < 16; i++) {
- u64 tag_val, data_val;
- const char *type_str;
- tag_val = tag[i];
- if (!(tag_val & PSYCHO_IOMMU_TAG_ERR))
- continue;
-
- data_val = data[i];
- switch((tag_val & PSYCHO_IOMMU_TAG_ERRSTS) >> 23UL) {
- case 0:
- type_str = "Protection Error";
- break;
- case 1:
- type_str = "Invalid Error";
- break;
- case 2:
- type_str = "TimeOut Error";
- break;
- case 3:
- default:
- type_str = "ECC Error";
- break;
- }
-
- printk(KERN_ERR "%s: IOMMU TAG(%d)[error(%s) wr(%d) "
- "str(%d) sz(%dK) vpg(%08lx)]\n",
- pbm->name, i, type_str,
- ((tag_val & PSYCHO_IOMMU_TAG_WRITE) ? 1 : 0),
- ((tag_val & PSYCHO_IOMMU_TAG_STREAM) ? 1 : 0),
- ((tag_val & PSYCHO_IOMMU_TAG_SIZE) ? 64 : 8),
- (tag_val & PSYCHO_IOMMU_TAG_VPAGE) << IOMMU_PAGE_SHIFT);
- printk(KERN_ERR "%s: IOMMU DATA(%d)[valid(%d) cache(%d) "
- "ppg(%016lx)]\n",
- pbm->name, i,
- ((data_val & PSYCHO_IOMMU_DATA_VALID) ? 1 : 0),
- ((data_val & PSYCHO_IOMMU_DATA_CACHE) ? 1 : 0),
- (data_val & PSYCHO_IOMMU_DATA_PPAGE)<<IOMMU_PAGE_SHIFT);
- }
-}
-
-#define PSYCHO_IOMMU_CTRL_XLTESTAT 0x0000000006000000UL
-#define PSYCHO_IOMMU_CTRL_XLTEERR 0x0000000001000000UL
-
-void psycho_check_iommu_error(struct pci_pbm_info *pbm,
- unsigned long afsr,
- unsigned long afar,
- enum psycho_error_type type)
-{
- u64 control, iommu_tag[16], iommu_data[16];
- struct iommu *iommu = pbm->iommu;
- unsigned long flags;
-
- spin_lock_irqsave(&iommu->lock, flags);
- control = upa_readq(iommu->iommu_control);
- if (control & PSYCHO_IOMMU_CTRL_XLTEERR) {
- const char *type_str;
-
- control &= ~PSYCHO_IOMMU_CTRL_XLTEERR;
- upa_writeq(control, iommu->iommu_control);
-
- switch ((control & PSYCHO_IOMMU_CTRL_XLTESTAT) >> 25UL) {
- case 0:
- type_str = "Protection Error";
- break;
- case 1:
- type_str = "Invalid Error";
- break;
- case 2:
- type_str = "TimeOut Error";
- break;
- case 3:
- default:
- type_str = "ECC Error";
- break;
- };
- printk(KERN_ERR "%s: IOMMU Error, type[%s]\n",
- pbm->name, type_str);
-
- /* 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.
- */
- psycho_record_iommu_tags_and_data(pbm, iommu_tag, iommu_data);
- psycho_dump_iommu_tags_and_data(pbm, iommu_tag, iommu_data);
- }
- psycho_check_stc_error(pbm);
- spin_unlock_irqrestore(&iommu->lock, flags);
-}
-
-#define PSYCHO_PCICTRL_SBH_ERR 0x0000000800000000UL
-#define PSYCHO_PCICTRL_SERR 0x0000000400000000UL
-
-static irqreturn_t psycho_pcierr_intr_other(struct pci_pbm_info *pbm)
-{
- irqreturn_t ret = IRQ_NONE;
- u64 csr, csr_error_bits;
- u16 stat, *addr;
-
- csr = upa_readq(pbm->pci_csr);
- csr_error_bits = csr & (PSYCHO_PCICTRL_SBH_ERR | PSYCHO_PCICTRL_SERR);
- if (csr_error_bits) {
- /* Clear the errors. */
- upa_writeq(csr, pbm->pci_csr);
-
- /* Log 'em. */
- if (csr_error_bits & PSYCHO_PCICTRL_SBH_ERR)
- printk(KERN_ERR "%s: PCI streaming byte hole "
- "error asserted.\n", pbm->name);
- if (csr_error_bits & PSYCHO_PCICTRL_SERR)
- printk(KERN_ERR "%s: PCI SERR signal asserted.\n",
- pbm->name);
- ret = IRQ_HANDLED;
- }
- addr = psycho_pci_config_mkaddr(pbm, pbm->pci_first_busno,
- 0, PCI_STATUS);
- pci_config_read16(addr, &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(KERN_ERR "%s: PCI bus error, PCI_STATUS[%04x]\n",
- pbm->name, stat);
- pci_config_write16(addr, 0xffff);
- ret = IRQ_HANDLED;
- }
- return ret;
-}
-
-#define PSYCHO_PCIAFSR_PMA 0x8000000000000000UL
-#define PSYCHO_PCIAFSR_PTA 0x4000000000000000UL
-#define PSYCHO_PCIAFSR_PRTRY 0x2000000000000000UL
-#define PSYCHO_PCIAFSR_PPERR 0x1000000000000000UL
-#define PSYCHO_PCIAFSR_SMA 0x0800000000000000UL
-#define PSYCHO_PCIAFSR_STA 0x0400000000000000UL
-#define PSYCHO_PCIAFSR_SRTRY 0x0200000000000000UL
-#define PSYCHO_PCIAFSR_SPERR 0x0100000000000000UL
-#define PSYCHO_PCIAFSR_RESV1 0x00ff000000000000UL
-#define PSYCHO_PCIAFSR_BMSK 0x0000ffff00000000UL
-#define PSYCHO_PCIAFSR_BLK 0x0000000080000000UL
-#define PSYCHO_PCIAFSR_RESV2 0x0000000040000000UL
-#define PSYCHO_PCIAFSR_MID 0x000000003e000000UL
-#define PSYCHO_PCIAFSR_RESV3 0x0000000001ffffffUL
-
-irqreturn_t psycho_pcierr_intr(int irq, void *dev_id)
-{
- struct pci_pbm_info *pbm = dev_id;
- u64 afsr, afar, error_bits;
- int reported;
-
- afsr = upa_readq(pbm->pci_afsr);
- afar = upa_readq(pbm->pci_afar);
- error_bits = afsr &
- (PSYCHO_PCIAFSR_PMA | PSYCHO_PCIAFSR_PTA |
- PSYCHO_PCIAFSR_PRTRY | PSYCHO_PCIAFSR_PPERR |
- PSYCHO_PCIAFSR_SMA | PSYCHO_PCIAFSR_STA |
- PSYCHO_PCIAFSR_SRTRY | PSYCHO_PCIAFSR_SPERR);
- if (!error_bits)
- return psycho_pcierr_intr_other(pbm);
- upa_writeq(error_bits, pbm->pci_afsr);
- printk(KERN_ERR "%s: PCI Error, primary error type[%s]\n",
- pbm->name,
- (((error_bits & PSYCHO_PCIAFSR_PMA) ?
- "Master Abort" :
- ((error_bits & PSYCHO_PCIAFSR_PTA) ?
- "Target Abort" :
- ((error_bits & PSYCHO_PCIAFSR_PRTRY) ?
- "Excessive Retries" :
- ((error_bits & PSYCHO_PCIAFSR_PPERR) ?
- "Parity Error" : "???"))))));
- printk(KERN_ERR "%s: bytemask[%04lx] UPA_MID[%02lx] was_block(%d)\n",
- pbm->name,
- (afsr & PSYCHO_PCIAFSR_BMSK) >> 32UL,
- (afsr & PSYCHO_PCIAFSR_MID) >> 25UL,
- (afsr & PSYCHO_PCIAFSR_BLK) ? 1 : 0);
- printk(KERN_ERR "%s: PCI AFAR [%016lx]\n", pbm->name, afar);
- printk(KERN_ERR "%s: PCI Secondary errors [", pbm->name);
- reported = 0;
- if (afsr & PSYCHO_PCIAFSR_SMA) {
- reported++;
- printk("(Master Abort)");
- }
- if (afsr & PSYCHO_PCIAFSR_STA) {
- reported++;
- printk("(Target Abort)");
- }
- if (afsr & PSYCHO_PCIAFSR_SRTRY) {
- reported++;
- printk("(Excessive Retries)");
- }
- if (afsr & PSYCHO_PCIAFSR_SPERR) {
- reported++;
- printk("(Parity Error)");
- }
- if (!reported)
- printk("(none)");
- printk("]\n");
-
- if (error_bits & (PSYCHO_PCIAFSR_PTA | PSYCHO_PCIAFSR_STA)) {
- psycho_check_iommu_error(pbm, afsr, afar, PCI_ERR);
- pci_scan_for_target_abort(pbm, pbm->pci_bus);
- }
- if (error_bits & (PSYCHO_PCIAFSR_PMA | PSYCHO_PCIAFSR_SMA))
- pci_scan_for_master_abort(pbm, pbm->pci_bus);
-
- if (error_bits & (PSYCHO_PCIAFSR_PPERR | PSYCHO_PCIAFSR_SPERR))
- pci_scan_for_parity_error(pbm, pbm->pci_bus);
-
- return IRQ_HANDLED;
-}
-
-static void psycho_iommu_flush(struct pci_pbm_info *pbm)
-{
- int i;
-
- for (i = 0; i < 16; i++) {
- unsigned long off = i * 8;
-
- upa_writeq(0, pbm->controller_regs + PSYCHO_IOMMU_TAG + off);
- upa_writeq(0, pbm->controller_regs + PSYCHO_IOMMU_DATA + off);
- }
-}
-
-#define PSYCHO_IOMMU_CONTROL 0x0200UL
-#define PSYCHO_IOMMU_CTRL_TSBSZ 0x0000000000070000UL
-#define PSYCHO_IOMMU_TSBSZ_1K 0x0000000000000000UL
-#define PSYCHO_IOMMU_TSBSZ_2K 0x0000000000010000UL
-#define PSYCHO_IOMMU_TSBSZ_4K 0x0000000000020000UL
-#define PSYCHO_IOMMU_TSBSZ_8K 0x0000000000030000UL
-#define PSYCHO_IOMMU_TSBSZ_16K 0x0000000000040000UL
-#define PSYCHO_IOMMU_TSBSZ_32K 0x0000000000050000UL
-#define PSYCHO_IOMMU_TSBSZ_64K 0x0000000000060000UL
-#define PSYCHO_IOMMU_TSBSZ_128K 0x0000000000070000UL
-#define PSYCHO_IOMMU_CTRL_TBWSZ 0x0000000000000004UL
-#define PSYCHO_IOMMU_CTRL_DENAB 0x0000000000000002UL
-#define PSYCHO_IOMMU_CTRL_ENAB 0x0000000000000001UL
-#define PSYCHO_IOMMU_FLUSH 0x0210UL
-#define PSYCHO_IOMMU_TSBBASE 0x0208UL
-
-int psycho_iommu_init(struct pci_pbm_info *pbm, int tsbsize,
- u32 dvma_offset, u32 dma_mask,
- unsigned long write_complete_offset)
-{
- struct iommu *iommu = pbm->iommu;
- u64 control;
- int err;
-
- iommu->iommu_control = pbm->controller_regs + PSYCHO_IOMMU_CONTROL;
- iommu->iommu_tsbbase = pbm->controller_regs + PSYCHO_IOMMU_TSBBASE;
- iommu->iommu_flush = pbm->controller_regs + PSYCHO_IOMMU_FLUSH;
- iommu->iommu_tags = pbm->controller_regs + PSYCHO_IOMMU_TAG;
- iommu->write_complete_reg = (pbm->controller_regs +
- write_complete_offset);
-
- iommu->iommu_ctxflush = 0;
-
- control = upa_readq(iommu->iommu_control);
- control |= PSYCHO_IOMMU_CTRL_DENAB;
- upa_writeq(control, iommu->iommu_control);
-
- psycho_iommu_flush(pbm);
-
- /* Leave diag mode enabled for full-flushing done in pci_iommu.c */
- err = iommu_table_init(iommu, tsbsize * 1024 * 8,
- dvma_offset, dma_mask, pbm->numa_node);
- if (err)
- return err;
-
- upa_writeq(__pa(iommu->page_table), iommu->iommu_tsbbase);
-
- control = upa_readq(iommu->iommu_control);
- control &= ~(PSYCHO_IOMMU_CTRL_TSBSZ | PSYCHO_IOMMU_CTRL_TBWSZ);
- control |= PSYCHO_IOMMU_CTRL_ENAB;
-
- switch (tsbsize) {
- case 64:
- control |= PSYCHO_IOMMU_TSBSZ_64K;
- break;
- case 128:
- control |= PSYCHO_IOMMU_TSBSZ_128K;
- break;
- default:
- return -EINVAL;
- }
-
- upa_writeq(control, iommu->iommu_control);
-
- return 0;
-
-}
-
-void psycho_pbm_init_common(struct pci_pbm_info *pbm, struct of_device *op,
- const char *chip_name, int chip_type)
-{
- struct device_node *dp = op->node;
-
- pbm->name = dp->full_name;
- pbm->numa_node = -1;
- pbm->chip_type = chip_type;
- pbm->chip_version = of_getintprop_default(dp, "version#", 0);
- pbm->chip_revision = of_getintprop_default(dp, "module-revision#", 0);
- pbm->op = op;
- pbm->pci_ops = &sun4u_pci_ops;
- pbm->config_space_reg_bits = 8;
- pbm->index = pci_num_pbms++;
- pci_get_pbm_props(pbm);
- pci_determine_mem_io_space(pbm);
-
- printk(KERN_INFO "%s: %s PCI Bus Module ver[%x:%x]\n",
- pbm->name, chip_name,
- pbm->chip_version, pbm->chip_revision);
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-22 19:59:28 +0000