From e528586079a20c3d28a490ec8e3271bb4348fc3e Mon Sep 17 00:00:00 2001 From: Jayamohan Kallickal Date: Fri, 7 Oct 2011 19:31:08 -0500 Subject: [PATCH] [SCSI] be2iscsi: Fix for kdump failure This patch fixes the Kdump failure reported by Redhat wich was caused by be2iscsi resetting the Chip when be2iscsi detects it is in crashdump mode. If be2net was loaded before be2iscsi then this leaves be2net driver hanging on to resources that the chip stopped recognising after the reset. This patch replaces chip reset with Function reset so that only the particular function and not the whole chip is affected Signed-off-by: Jayamohan Kallickal Signed-off-by: Mike Christie Signed-off-by: James Bottomley --- drivers/scsi/be2iscsi/be_cmds.c | 19 +++++++++++++++++++ drivers/scsi/be2iscsi/be_cmds.h | 2 ++ drivers/scsi/be2iscsi/be_main.c | 2 +- 3 files changed, 22 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/be2iscsi/be_cmds.c b/drivers/scsi/be2iscsi/be_cmds.c index b8a82f2c62c8..67fd831e79c2 100644 --- a/drivers/scsi/be2iscsi/be_cmds.c +++ b/drivers/scsi/be2iscsi/be_cmds.c @@ -868,3 +868,22 @@ int be_cmd_iscsi_post_sgl_pages(struct be_ctrl_info *ctrl, beiscsi_cmd_q_destroy(ctrl, NULL, QTYPE_SGL); return status; } + +int beiscsi_cmd_reset_function(struct beiscsi_hba *phba) +{ + struct be_ctrl_info *ctrl = &phba->ctrl; + struct be_mcc_wrb *wrb = wrb_from_mbox(&ctrl->mbox_mem); + struct be_post_sgl_pages_req *req = embedded_payload(wrb); + int status; + + spin_lock(&ctrl->mbox_lock); + + req = embedded_payload(wrb); + be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0); + be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_COMMON, + OPCODE_COMMON_FUNCTION_RESET, sizeof(*req)); + status = be_mbox_notify_wait(phba); + + spin_unlock(&ctrl->mbox_lock); + return status; +} diff --git a/drivers/scsi/be2iscsi/be_cmds.h b/drivers/scsi/be2iscsi/be_cmds.h index 497eb29e5c9e..8b40a5b4366c 100644 --- a/drivers/scsi/be2iscsi/be_cmds.h +++ b/drivers/scsi/be2iscsi/be_cmds.h @@ -561,6 +561,8 @@ int be_cmd_iscsi_post_sgl_pages(struct be_ctrl_info *ctrl, struct be_dma_mem *q_mem, u32 page_offset, u32 num_pages); +int beiscsi_cmd_reset_function(struct beiscsi_hba *phba); + int be_cmd_wrbq_create(struct be_ctrl_info *ctrl, struct be_dma_mem *q_mem, struct be_queue_info *wrbq); diff --git a/drivers/scsi/be2iscsi/be_main.c b/drivers/scsi/be2iscsi/be_main.c index 57fea3848b69..804c46e280ae 100644 --- a/drivers/scsi/be2iscsi/be_main.c +++ b/drivers/scsi/be2iscsi/be_main.c @@ -4276,7 +4276,7 @@ static int __devinit beiscsi_dev_probe(struct pci_dev *pcidev, gcrashmode++; shost_printk(KERN_ERR, phba->shost, "Loading Driver in crashdump mode\n"); - ret = beiscsi_pci_soft_reset(phba); + ret = beiscsi_cmd_reset_function(phba); if (ret) { shost_printk(KERN_ERR, phba->shost, "Reset Failed. Aborting Crashdump\n"); -- GitLab