From e9b911935033ea9e28a2f7a274c9a81db1f8d91a Mon Sep 17 00:00:00 2001 From: Jayamohan Kallickal Date: Thu, 22 Jul 2010 04:24:53 +0530 Subject: [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 Reviewed-by: Mike Christie Signed-off-by: James Bottomley --- drivers/scsi/be2iscsi/be_cmds.c | 80 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 80 insertions(+) (limited to 'drivers/scsi/be2iscsi/be_cmds.c') diff --git a/drivers/scsi/be2iscsi/be_cmds.c b/drivers/scsi/be2iscsi/be_cmds.c index 9cc1f5573150..7c7537335c88 100644 --- a/drivers/scsi/be2iscsi/be_cmds.c +++ b/drivers/scsi/be2iscsi/be_cmds.c @@ -19,6 +19,86 @@ #include "be_mgmt.h" #include "be_main.h" +int beiscsi_pci_soft_reset(struct beiscsi_hba *phba) +{ + u32 sreset; + u8 *pci_reset_offset = 0; + u8 *pci_online0_offset = 0; + u8 *pci_online1_offset = 0; + u32 pconline0 = 0; + u32 pconline1 = 0; + u32 i; + + pci_reset_offset = (u8 *)phba->pci_va + BE2_SOFT_RESET; + pci_online0_offset = (u8 *)phba->pci_va + BE2_PCI_ONLINE0; + pci_online1_offset = (u8 *)phba->pci_va + BE2_PCI_ONLINE1; + sreset = readl((void *)pci_reset_offset); + sreset |= BE2_SET_RESET; + writel(sreset, (void *)pci_reset_offset); + + i = 0; + while (sreset & BE2_SET_RESET) { + if (i > 64) + break; + msleep(100); + sreset = readl((void *)pci_reset_offset); + i++; + } + + if (sreset & BE2_SET_RESET) { + printk(KERN_ERR "Soft Reset did not deassert\n"); + return -EIO; + } + pconline1 = BE2_MPU_IRAM_ONLINE; + writel(pconline0, (void *)pci_online0_offset); + writel(pconline1, (void *)pci_online1_offset); + + sreset = BE2_SET_RESET; + writel(sreset, (void *)pci_reset_offset); + + i = 0; + while (sreset & BE2_SET_RESET) { + if (i > 64) + break; + msleep(1); + sreset = readl((void *)pci_reset_offset); + i++; + } + if (sreset & BE2_SET_RESET) { + printk(KERN_ERR "MPU Online Soft Reset did not deassert\n"); + return -EIO; + } + return 0; +} + +int be_chk_reset_complete(struct beiscsi_hba *phba) +{ + unsigned int num_loop; + u8 *mpu_sem = 0; + u32 status; + + num_loop = 1000; + mpu_sem = (u8 *)phba->csr_va + MPU_EP_SEMAPHORE; + msleep(5000); + + while (num_loop) { + status = readl((void *)mpu_sem); + + if ((status & 0x80000000) || (status & 0x0000FFFF) == 0xC000) + break; + msleep(60); + num_loop--; + } + + if ((status & 0x80000000) || (!num_loop)) { + printk(KERN_ERR "Failed in be_chk_reset_complete" + "status = 0x%x\n", status); + return -EIO; + } + + return 0; +} + void be_mcc_notify(struct beiscsi_hba *phba) { struct be_queue_info *mccq = &phba->ctrl.mcc_obj.q; -- cgit v1.2.3-55-g7522