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| author | Jayamohan Kallickal <jayamohank@serverengines.com> | 2010-07-22 04:24:53 +0530 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@suse.de> | 2010-07-28 09:05:34 -0500 |
| commit | e9b911935033ea9e28a2f7a274c9a81db1f8d91a (patch) | |
| tree | e7e050c9e3ed9b4368305624834f930c29550c8a /drivers/scsi/be2iscsi/be_main.c | |
| parent | 5db3f33d687c5a4ba589bf3af98c786399c6e213 (diff) | |
| download | blackbird-obmc-linux-e9b911935033ea9e28a2f7a274c9a81db1f8d91a.tar.gz blackbird-obmc-linux-e9b911935033ea9e28a2f7a274c9a81db1f8d91a.zip | |
[SCSI] be2iscsi: Adding crashdump support
These changes allow the driver to support crashdump. We need to reset the
chip incase of a crashdump
Signed-off-by: Jayamohan Kallickal <jayamohank@serverengines.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/scsi/be2iscsi/be_main.c')
| -rw-r--r-- | drivers/scsi/be2iscsi/be_main.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/drivers/scsi/be2iscsi/be_main.c b/drivers/scsi/be2iscsi/be_main.c index 67a7e3f7bae6..1a22125f5202 100644 --- a/drivers/scsi/be2iscsi/be_main.c +++ b/drivers/scsi/be2iscsi/be_main.c @@ -41,6 +41,8 @@ static unsigned int be_iopoll_budget = 10; static unsigned int be_max_phys_size = 64; static unsigned int enable_msix = 1; +static unsigned int gcrashmode = 0; +static unsigned int num_hba = 0; MODULE_DEVICE_TABLE(pci, beiscsi_pci_id_table); MODULE_DESCRIPTION(DRV_DESC " " BUILD_STR); @@ -3731,6 +3733,8 @@ static void beiscsi_remove(struct pci_dev *pcidev) struct hwi_context_memory *phwi_context; struct be_eq_obj *pbe_eq; unsigned int i, msix_vec; + u8 *real_offset = 0; + u32 value = 0; phba = (struct beiscsi_hba *)pci_get_drvdata(pcidev); if (!phba) { @@ -3759,6 +3763,14 @@ static void beiscsi_remove(struct pci_dev *pcidev) beiscsi_clean_port(phba); beiscsi_free_mem(phba); + real_offset = (u8 *)phba->csr_va + MPU_EP_SEMAPHORE; + + value = readl((void *)real_offset); + + if (value & 0x00010000) { + value &= 0xfffeffff; + writel(value, (void *)real_offset); + } beiscsi_unmap_pci_function(phba); pci_free_consistent(phba->pcidev, phba->ctrl.mbox_mem_alloced.size, @@ -3792,6 +3804,8 @@ static int __devinit beiscsi_dev_probe(struct pci_dev *pcidev, struct hwi_context_memory *phwi_context; struct be_eq_obj *pbe_eq; int ret, num_cpus, i; + u8 *real_offset = 0; + u32 value = 0; ret = beiscsi_enable_pci(pcidev); if (ret < 0) { @@ -3837,6 +3851,33 @@ static int __devinit beiscsi_dev_probe(struct pci_dev *pcidev, goto hba_free; } + if (!num_hba) { + real_offset = (u8 *)phba->csr_va + MPU_EP_SEMAPHORE; + value = readl((void *)real_offset); + if (value & 0x00010000) { + gcrashmode++; + shost_printk(KERN_ERR, phba->shost, + "Loading Driver in crashdump mode\n"); + ret = beiscsi_pci_soft_reset(phba); + if (ret) { + shost_printk(KERN_ERR, phba->shost, + "Reset Failed. Aborting Crashdump\n"); + goto hba_free; + } + ret = be_chk_reset_complete(phba); + if (ret) { + shost_printk(KERN_ERR, phba->shost, + "Failed to get out of reset." + "Aborting Crashdump\n"); + goto hba_free; + } + } else { + value |= 0x00010000; + writel(value, (void *)real_offset); + num_hba++; + } + } + spin_lock_init(&phba->io_sgl_lock); spin_lock_init(&phba->mgmt_sgl_lock); spin_lock_init(&phba->isr_lock); @@ -3907,6 +3948,15 @@ free_twq: beiscsi_clean_port(phba); beiscsi_free_mem(phba); free_port: + real_offset = (u8 *)phba->csr_va + MPU_EP_SEMAPHORE; + + value = readl((void *)real_offset); + + if (value & 0x00010000) { + value &= 0xfffeffff; + writel(value, (void *)real_offset); + } + pci_free_consistent(phba->pcidev, phba->ctrl.mbox_mem_alloced.size, phba->ctrl.mbox_mem_alloced.va, |
