From b410982c98dd606c9dec9508770f0ac95eeb1d42 Mon Sep 17 00:00:00 2001 From: Tej Parkash Date: Mon, 24 Feb 2014 22:06:58 -0500 Subject: [PATCH] qla4xxx: Add support of 0xFF capture mask for minidump Signed-off-by: Tej Parkash Signed-off-by: Vikas Chaudhary Reviewed-by: Mike Christie Signed-off-by: Christoph Hellwig --- drivers/scsi/qla4xxx/ql4_fw.h | 4 ++++ drivers/scsi/qla4xxx/ql4_init.c | 30 ++++++++++++++++++++++++++++-- drivers/scsi/qla4xxx/ql4_os.c | 2 +- 3 files changed, 33 insertions(+), 3 deletions(-) diff --git a/drivers/scsi/qla4xxx/ql4_fw.h b/drivers/scsi/qla4xxx/ql4_fw.h index 209853ce0bbc..699575efc9ba 100644 --- a/drivers/scsi/qla4xxx/ql4_fw.h +++ b/drivers/scsi/qla4xxx/ql4_fw.h @@ -1415,6 +1415,9 @@ struct ql_iscsi_stats { #define QLA83XX_DBG_OCM_WNDREG_ARRAY_LEN 16 #define QLA83XX_SS_OCM_WNDREG_INDEX 3 #define QLA83XX_SS_PCI_INDEX 0 +#define QLA8022_TEMPLATE_CAP_OFFSET 172 +#define QLA83XX_TEMPLATE_CAP_OFFSET 268 +#define QLA80XX_TEMPLATE_RESERVED_BITS 16 struct qla4_8xxx_minidump_template_hdr { uint32_t entry_type; @@ -1434,6 +1437,7 @@ struct qla4_8xxx_minidump_template_hdr { uint32_t saved_state_array[QLA8XXX_DBG_STATE_ARRAY_LEN]; uint32_t capture_size_array[QLA8XXX_DBG_CAP_SIZE_ARRAY_LEN]; uint32_t ocm_window_reg[QLA83XX_DBG_OCM_WNDREG_ARRAY_LEN]; + uint32_t capabilities[QLA80XX_TEMPLATE_RESERVED_BITS]; }; #endif /* _QLA4X_FW_H */ diff --git a/drivers/scsi/qla4xxx/ql4_init.c b/drivers/scsi/qla4xxx/ql4_init.c index 28fbece7e08f..7dda1a0d7161 100644 --- a/drivers/scsi/qla4xxx/ql4_init.c +++ b/drivers/scsi/qla4xxx/ql4_init.c @@ -282,6 +282,25 @@ qla4xxx_wait_for_ip_config(struct scsi_qla_host *ha) return ipv4_wait|ipv6_wait; } +static int qla4_80xx_is_minidump_dma_capable(struct scsi_qla_host *ha, + struct qla4_8xxx_minidump_template_hdr *md_hdr) +{ + int offset = (is_qla8022(ha)) ? QLA8022_TEMPLATE_CAP_OFFSET : + QLA83XX_TEMPLATE_CAP_OFFSET; + int rval = 1; + uint32_t *cap_offset; + + cap_offset = (uint32_t *)((char *)md_hdr + offset); + + if (!(le32_to_cpu(*cap_offset) & BIT_0)) { + ql4_printk(KERN_INFO, ha, "PEX DMA Not supported %d\n", + *cap_offset); + rval = 0; + } + + return rval; +} + /** * qla4xxx_alloc_fw_dump - Allocate memory for minidump data. * @ha: pointer to host adapter structure. @@ -294,6 +313,7 @@ void qla4xxx_alloc_fw_dump(struct scsi_qla_host *ha) void *md_tmp; dma_addr_t md_tmp_dma; struct qla4_8xxx_minidump_template_hdr *md_hdr; + int dma_capable; if (ha->fw_dump) { ql4_printk(KERN_WARNING, ha, @@ -326,13 +346,19 @@ void qla4xxx_alloc_fw_dump(struct scsi_qla_host *ha) md_hdr = (struct qla4_8xxx_minidump_template_hdr *)md_tmp; + dma_capable = qla4_80xx_is_minidump_dma_capable(ha, md_hdr); + capture_debug_level = md_hdr->capture_debug_level; /* Get capture mask based on module loadtime setting. */ - if (ql4xmdcapmask >= 0x3 && ql4xmdcapmask <= 0x7F) + if ((ql4xmdcapmask >= 0x3 && ql4xmdcapmask <= 0x7F) || + (ql4xmdcapmask == 0xFF && dma_capable)) { ha->fw_dump_capture_mask = ql4xmdcapmask; - else + } else { + if (ql4xmdcapmask == 0xFF) + ql4_printk(KERN_INFO, ha, "Falling back to default capture mask, as PEX DMA is not supported\n"); ha->fw_dump_capture_mask = capture_debug_level; + } md_hdr->driver_capture_mask = ha->fw_dump_capture_mask; diff --git a/drivers/scsi/qla4xxx/ql4_os.c b/drivers/scsi/qla4xxx/ql4_os.c index fb90c9d737bc..bb160409b7cb 100644 --- a/drivers/scsi/qla4xxx/ql4_os.c +++ b/drivers/scsi/qla4xxx/ql4_os.c @@ -88,7 +88,7 @@ module_param(ql4xmdcapmask, int, S_IRUGO); MODULE_PARM_DESC(ql4xmdcapmask, " Set the Minidump driver capture mask level.\n" "\t\t Default is 0 (firmware default capture mask)\n" - "\t\t Can be set to 0x3, 0x7, 0xF, 0x1F, 0x3F, 0x7F"); + "\t\t Can be set to 0x3, 0x7, 0xF, 0x1F, 0x3F, 0x7F, 0xFF"); int ql4xenablemd = 1; module_param(ql4xenablemd, int, S_IRUGO | S_IWUSR); -- 2.20.1