[SCSI] ipr: add hardware assisted smart dump functionality
This patch adds the hardware assisted smart dump functionality for the next generation IOA PCI interface chip. Signea-off-by: Wayne Boyer <wayneb@linux.vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
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4565e37063
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@ -142,7 +142,9 @@ static const struct ipr_chip_cfg_t ipr_chip_cfg[] = {
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.ioarrin_reg = 0x00070,
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.sense_uproc_interrupt_reg = 0x00020,
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.set_uproc_interrupt_reg = 0x00020,
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.clr_uproc_interrupt_reg = 0x00028
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.clr_uproc_interrupt_reg = 0x00028,
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.dump_addr_reg = 0x00064,
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.dump_data_reg = 0x00068
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}
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},
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};
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@ -2513,6 +2515,31 @@ static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay)
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return -EIO;
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}
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/**
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* ipr_get_sis64_dump_data_section - Dump IOA memory
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* @ioa_cfg: ioa config struct
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* @start_addr: adapter address to dump
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* @dest: destination kernel buffer
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* @length_in_words: length to dump in 4 byte words
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*
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* Return value:
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* 0 on success
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**/
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static int ipr_get_sis64_dump_data_section(struct ipr_ioa_cfg *ioa_cfg,
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u32 start_addr,
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__be32 *dest, u32 length_in_words)
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{
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int i;
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for (i = 0; i < length_in_words; i++) {
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writel(start_addr+(i*4), ioa_cfg->regs.dump_addr_reg);
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*dest = cpu_to_be32(readl(ioa_cfg->regs.dump_data_reg));
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dest++;
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}
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return 0;
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}
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/**
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* ipr_get_ldump_data_section - Dump IOA memory
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* @ioa_cfg: ioa config struct
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@ -2530,6 +2557,10 @@ static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg,
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volatile u32 temp_pcii_reg;
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int i, delay = 0;
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if (ioa_cfg->sis64)
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return ipr_get_sis64_dump_data_section(ioa_cfg, start_addr,
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dest, length_in_words);
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/* Write IOA interrupt reg starting LDUMP state */
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writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT),
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ioa_cfg->regs.set_uproc_interrupt_reg);
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@ -2787,6 +2818,7 @@ static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump)
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u32 num_entries, start_off, end_off;
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u32 bytes_to_copy, bytes_copied, rc;
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struct ipr_sdt *sdt;
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int valid = 1;
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int i;
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ENTER;
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@ -2800,7 +2832,7 @@ static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump)
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start_addr = readl(ioa_cfg->ioa_mailbox);
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if (!ipr_sdt_is_fmt2(start_addr)) {
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if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(start_addr)) {
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dev_err(&ioa_cfg->pdev->dev,
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"Invalid dump table format: %lx\n", start_addr);
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spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
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@ -2829,7 +2861,6 @@ static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump)
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/* IOA Dump entry */
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ipr_init_dump_entry_hdr(&ioa_dump->hdr);
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ioa_dump->format = IPR_SDT_FMT2;
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ioa_dump->hdr.len = 0;
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ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
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ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID;
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@ -2844,7 +2875,8 @@ static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump)
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sizeof(struct ipr_sdt) / sizeof(__be32));
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/* Smart Dump table is ready to use and the first entry is valid */
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if (rc || (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE)) {
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if (rc || ((be32_to_cpu(sdt->hdr.state) != IPR_FMT3_SDT_READY_TO_USE) &&
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(be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) {
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dev_err(&ioa_cfg->pdev->dev,
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"Dump of IOA failed. Dump table not valid: %d, %X.\n",
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rc, be32_to_cpu(sdt->hdr.state));
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@ -2868,12 +2900,19 @@ static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump)
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}
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if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) {
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sdt_word = be32_to_cpu(sdt->entry[i].bar_str_offset);
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start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK;
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end_off = be32_to_cpu(sdt->entry[i].end_offset);
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sdt_word = be32_to_cpu(sdt->entry[i].start_token);
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if (ioa_cfg->sis64)
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bytes_to_copy = be32_to_cpu(sdt->entry[i].end_token);
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else {
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start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK;
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end_off = be32_to_cpu(sdt->entry[i].end_token);
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if (ipr_sdt_is_fmt2(sdt_word) && sdt_word) {
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bytes_to_copy = end_off - start_off;
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if (ipr_sdt_is_fmt2(sdt_word) && sdt_word)
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bytes_to_copy = end_off - start_off;
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else
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valid = 0;
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}
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if (valid) {
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if (bytes_to_copy > IPR_MAX_IOA_DUMP_SIZE) {
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sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY;
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continue;
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@ -7202,7 +7241,7 @@ static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
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mailbox = readl(ioa_cfg->ioa_mailbox);
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if (!ipr_sdt_is_fmt2(mailbox)) {
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if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(mailbox)) {
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ipr_unit_check_no_data(ioa_cfg);
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return;
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}
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@ -7211,15 +7250,20 @@ static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
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rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
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(sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
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if (rc || (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE) ||
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!(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY)) {
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if (rc || !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY) ||
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((be32_to_cpu(sdt.hdr.state) != IPR_FMT3_SDT_READY_TO_USE) &&
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(be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) {
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ipr_unit_check_no_data(ioa_cfg);
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return;
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}
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/* Find length of the first sdt entry (UC buffer) */
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length = (be32_to_cpu(sdt.entry[0].end_offset) -
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be32_to_cpu(sdt.entry[0].bar_str_offset)) & IPR_FMT2_MBX_ADDR_MASK;
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if (be32_to_cpu(sdt.hdr.state) == IPR_FMT3_SDT_READY_TO_USE)
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length = be32_to_cpu(sdt.entry[0].end_token);
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else
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length = (be32_to_cpu(sdt.entry[0].end_token) -
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be32_to_cpu(sdt.entry[0].start_token)) &
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IPR_FMT2_MBX_ADDR_MASK;
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hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
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struct ipr_hostrcb, queue);
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@ -7227,7 +7271,7 @@ static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
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memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
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rc = ipr_get_ldump_data_section(ioa_cfg,
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be32_to_cpu(sdt.entry[0].bar_str_offset),
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be32_to_cpu(sdt.entry[0].start_token),
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(__be32 *)&hostrcb->hcam,
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min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
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@ -8202,6 +8246,11 @@ static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
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t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
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t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
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t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
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if (ioa_cfg->sis64) {
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t->dump_addr_reg = base + p->dump_addr_reg;
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t->dump_data_reg = base + p->dump_data_reg;
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}
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}
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/**
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@ -228,6 +228,7 @@
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#define IPR_SDT_FMT2_BAR5_SEL 0x5
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#define IPR_SDT_FMT2_EXP_ROM_SEL 0x8
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#define IPR_FMT2_SDT_READY_TO_USE 0xC4D4E3F2
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#define IPR_FMT3_SDT_READY_TO_USE 0xC4D4E3F3
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#define IPR_DOORBELL 0x82800000
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#define IPR_RUNTIME_RESET 0x40000000
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@ -1093,10 +1094,9 @@ struct ipr_hostrcb {
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/* IPR smart dump table structures */
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struct ipr_sdt_entry {
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__be32 bar_str_offset;
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__be32 end_offset;
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u8 entry_byte;
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u8 reserved[3];
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__be32 start_token;
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__be32 end_token;
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u8 reserved[4];
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u8 flags;
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#define IPR_SDT_ENDIAN 0x80
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@ -1204,6 +1204,9 @@ struct ipr_interrupt_offsets {
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unsigned long sense_uproc_interrupt_reg;
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unsigned long set_uproc_interrupt_reg;
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unsigned long clr_uproc_interrupt_reg;
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unsigned long dump_addr_reg;
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unsigned long dump_data_reg;
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};
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struct ipr_interrupts {
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@ -1217,6 +1220,9 @@ struct ipr_interrupts {
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void __iomem *sense_uproc_interrupt_reg;
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void __iomem *set_uproc_interrupt_reg;
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void __iomem *clr_uproc_interrupt_reg;
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void __iomem *dump_addr_reg;
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void __iomem *dump_data_reg;
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};
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struct ipr_chip_cfg_t {
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@ -1536,8 +1542,6 @@ struct ipr_ioa_dump {
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u32 next_page_index;
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u32 page_offset;
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u32 format;
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#define IPR_SDT_FMT2 2
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#define IPR_SDT_UNKNOWN 3
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}__attribute__((packed, aligned (4)));
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struct ipr_dump {
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