Hi, Any one is examining my patch? I have another patch waiting to submit. Thanks, -----Original Message----- From: Nick Cheng [mailto:nick.cheng@xxxxxxxxxxxx] Sent: Wednesday, March 10, 2010 12:39 PM To: 'linux-scsi@xxxxxxxxxxxxxxx' Cc: 'James.Bottomley@xxxxxxxxxxxxxxxxxxxxx'; 'linux-kernel@xxxxxxxxxxxxxxx' Subject: [PATCH] SCSI: improve arcmsr's error handlers on lk2.6.33 This is to principally improve arcmsr's error handlers, eh_bus_reset_handler and eh_abort_handler. Signed-off-by: Nick Cheng< nick.cheng@xxxxxxxxxxxx > --- diff -uprN -X Documentation/dontdiff drivers/scsi/arcmsr/arcmsr_attr.c drivers/scsi/arcmsr.1.20.00.15-91209/arcmsr_attr.c --- drivers/scsi/arcmsr/arcmsr_attr.c 2010-02-25 02:52:17.000000000 +0800 +++ drivers/scsi/arcmsr.1.20.00.15-91209/arcmsr_attr.c 2008-06-13 11:02:58.000000000 +0800 @@ -189,6 +189,7 @@ static struct bin_attribute arcmsr_sysfs .attr = { .name = "mu_read", .mode = S_IRUSR , + .owner = THIS_MODULE, }, .size = 1032, .read = arcmsr_sysfs_iop_message_read, @@ -198,6 +199,7 @@ static struct bin_attribute arcmsr_sysfs .attr = { .name = "mu_write", .mode = S_IWUSR, + .owner = THIS_MODULE, }, .size = 1032, .write = arcmsr_sysfs_iop_message_write, @@ -207,6 +209,7 @@ static struct bin_attribute arcmsr_sysfs .attr = { .name = "mu_clear", .mode = S_IWUSR, + .owner = THIS_MODULE, }, .size = 1, .write = arcmsr_sysfs_iop_message_clear, diff -uprN -X Documentation/dontdiff drivers/scsi/arcmsr/arcmsr.h drivers/scsi/arcmsr.1.20.00.15-91209/arcmsr.h --- drivers/scsi/arcmsr/arcmsr.h 2010-02-25 02:52:17.000000000 +0800 +++ drivers/scsi/arcmsr.1.20.00.15-91209/arcmsr.h 2010-02-01 12:41:34.000000000 +0800 @@ -48,16 +48,22 @@ struct device_attribute; /*The limit of outstanding scsi command that firmware can handle*/ #define ARCMSR_MAX_OUTSTANDING_CMD 256 #define ARCMSR_MAX_FREECCB_NUM 320 -#define ARCMSR_DRIVER_VERSION "Driver Version 1.20.00.15 2008/02/27" +#define ARCMSR_DRIVER_VERSION "Driver Version 1.20.00.15 2009/12/09" #define ARCMSR_SCSI_INITIATOR_ID 255 #define ARCMSR_MAX_XFER_SECTORS 512 #define ARCMSR_MAX_XFER_SECTORS_B 4096 +#define ARCMSR_MAX_XFER_SECTORS_C 304 #define ARCMSR_MAX_TARGETID 17 #define ARCMSR_MAX_TARGETLUN 8 #define ARCMSR_MAX_CMD_PERLUN ARCMSR_MAX_OUTSTANDING_CMD #define ARCMSR_MAX_QBUFFER 4096 -#define ARCMSR_MAX_SG_ENTRIES 38 +#define ARCMSR_DEFAULT_SG_ENTRIES 38 #define ARCMSR_MAX_HBB_POSTQUEUE 264 +#define ARCMSR_MAX_XFER_LEN 0x26000 /* 152K */ +#define ARCMSR_CDB_SG_PAGE_LENGTH 256 +#ifndef PCI_DEVICE_ID_ARECA_1880 +#define PCI_DEVICE_ID_ARECA_1880 0x1880 + #endif /* **************************************************************************** ****** ** @@ -66,6 +72,17 @@ struct device_attribute; #define ARC_SUCCESS 0 #define ARC_FAILURE 1 /* +*************************************************************************** ******* +** +*************************************************************************** ******* +*/ +#ifndef TRUE +#define TRUE 1 +#endif +#ifndef FALSE +#define FALSE 0 +#endif +/* **************************************************************************** *** ** split 64bits dma addressing **************************************************************************** *** @@ -110,6 +127,8 @@ struct CMD_MESSAGE_FIELD #define FUNCTION_SAY_HELLO 0x0807 #define FUNCTION_SAY_GOODBYE 0x0808 #define FUNCTION_FLUSH_ADAPTER_CACHE 0x0809 +#define FUNCTION_GET_FIRMWARE_STATUS 0x080A +#define FUNCTION_HARDWARE_RESET 0x080B /* ARECA IO CONTROL CODE*/ #define ARCMSR_MESSAGE_READ_RQBUFFER \ ARECA_SATA_RAID | FUNCTION_READ_RQBUFFER @@ -130,34 +149,28 @@ struct CMD_MESSAGE_FIELD #define ARCMSR_MESSAGE_FLUSH_ADAPTER_CACHE \ ARECA_SATA_RAID | FUNCTION_FLUSH_ADAPTER_CACHE /* ARECA IOCTL ReturnCode */ -#define ARCMSR_MESSAGE_RETURNCODE_OK 0x00000001 -#define ARCMSR_MESSAGE_RETURNCODE_ERROR 0x00000006 -#define ARCMSR_MESSAGE_RETURNCODE_3F 0x0000003F +#define ARCMSR_MESSAGE_RETURNCODE_OK 0x00000001 +#define ARCMSR_MESSAGE_RETURNCODE_ERROR 0x00000006 +#define ARCMSR_MESSAGE_RETURNCODE_3F 0x0000003F +#define ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON 0x00000088 /* ************************************************************* ** structure for holding DMA address data ************************************************************* */ +#define IS_DMA64 (sizeof(dma_addr_t) == 8) #define IS_SG64_ADDR 0x01000000 /* bit24 */ struct SG32ENTRY { __le32 length; __le32 address; -}; +}__attribute__ ((packed)); struct SG64ENTRY { __le32 length; __le32 address; __le32 addresshigh; -}; -struct SGENTRY_UNION -{ - union - { - struct SG32ENTRY sg32entry; - struct SG64ENTRY sg64entry; - }u; -}; +}__attribute__ ((packed)); /* ******************************************************************** ** Q Buffer of IOP Message Transfer @@ -184,6 +197,9 @@ struct FIRMWARE_INFO char model[8]; /*15, 60-67*/ char firmware_ver[16]; /*17, 68-83*/ char device_map[16]; /*21, 84-99*/ + uint32_t cfgVersion; /*25,100-103 Added for checking of new firmware capability*/ + uint8_t cfgSerial[16]; /*26,104-119*/ + uint32_t cfgPicStatus; /*30,120-123*/ }; /* signature of set and get firmware config */ #define ARCMSR_SIGNATURE_GET_CONFIG 0x87974060 @@ -210,6 +226,8 @@ struct FIRMWARE_INFO #define ARCMSR_CCBREPLY_FLAG_ERROR 0x10000000 /* outbound firmware ok */ #define ARCMSR_OUTBOUND_MESG1_FIRMWARE_OK 0x80000000 +/* ARC-1680 Bus Reset*/ +#define ARCMSR_ARC1680_BUS_RESET 0x00000003 /* ************************************************************************ @@ -261,11 +279,11 @@ struct FIRMWARE_INFO /* data tunnel buffer between user space program and its firmware */ /* user space data to iop 128bytes */ -#define ARCMSR_IOCTL_WBUFFER 0x0000fe00 +#define ARCMSR_MESSAGE_WBUFFER 0x0000fe00 /* iop data to user space 128bytes */ -#define ARCMSR_IOCTL_RBUFFER 0x0000ff00 +#define ARCMSR_MESSAGE_RBUFFER 0x0000ff00 /* iop message_rwbuffer for message command */ -#define ARCMSR_MSGCODE_RWBUFFER 0x0000fa00 +#define ARCMSR_MESSAGE_RWBUFFER 0x0000fa00 /* **************************************************************************** *** ** ARECA SCSI COMMAND DESCRIPTOR BLOCK size 0x1F8 (504) @@ -287,7 +305,7 @@ struct ARCMSR_CDB #define ARCMSR_CDB_FLAG_HEADQ 0x08 #define ARCMSR_CDB_FLAG_ORDEREDQ 0x10 - uint8_t Reserved1; + uint8_t msgPages; uint32_t Context; uint32_t DataLength; uint8_t Cdb[16]; @@ -300,10 +318,10 @@ struct ARCMSR_CDB uint8_t SenseData[15]; union { - struct SG32ENTRY sg32entry[ARCMSR_MAX_SG_ENTRIES]; - struct SG64ENTRY sg64entry[ARCMSR_MAX_SG_ENTRIES]; + struct SG32ENTRY sg32entry[1]; + struct SG64ENTRY sg64entry[1]; } u; -}; +}__attribute__ ((packed)); /* **************************************************************************** *** ** Messaging Unit (MU) of the Intel R 80331 I/O processor(Type A) and Type B processor @@ -341,13 +359,13 @@ struct MessageUnit_B uint32_t done_qbuffer[ARCMSR_MAX_HBB_POSTQUEUE]; uint32_t postq_index; uint32_t doneq_index; - void __iomem *drv2iop_doorbell_reg; - void __iomem *drv2iop_doorbell_mask_reg; - void __iomem *iop2drv_doorbell_reg; - void __iomem *iop2drv_doorbell_mask_reg; - void __iomem *msgcode_rwbuffer_reg; - void __iomem *ioctl_wbuffer_reg; - void __iomem *ioctl_rbuffer_reg; + uint32_t __iomem *drv2iop_doorbell; + uint32_t __iomem *drv2iop_doorbell_mask; + uint32_t __iomem *iop2drv_doorbell; + uint32_t __iomem *iop2drv_doorbell_mask; + uint32_t __iomem *message_rwbuffer; + uint32_t __iomem *message_wbuffer; + uint32_t __iomem *message_rbuffer; }; /* @@ -367,14 +385,18 @@ struct AdapterControlBlock unsigned long vir2phy_offset; /* Offset is used in making arc cdb physical to virtual calculations */ uint32_t outbound_int_enable; - + spinlock_t eh_lock; + spinlock_t ccblist_lock; union { struct MessageUnit_A __iomem * pmuA; struct MessageUnit_B * pmuB; }; /* message unit ATU inbound base address0 */ - + void __iomem *mem_base0; + void __iomem *mem_base1; uint32_t acb_flags; + u16 dev_id; + uint8_t adapter_index; #define ACB_F_SCSISTOPADAPTER 0x0001 #define ACB_F_MSG_STOP_BGRB 0x0002 /* stop RAID background rebuild */ @@ -390,7 +412,8 @@ struct AdapterControlBlock #define ACB_F_BUS_RESET 0x0080 #define ACB_F_IOP_INITED 0x0100 /* iop init */ - + #define ACB_F_ABORT 0x0200 + #define ACB_F_FIRMWARE_TRAP 0x0400 struct CommandControlBlock * pccb_pool[ARCMSR_MAX_FREECCB_NUM]; /* used for memory free */ struct list_head ccb_free_list; @@ -404,7 +427,8 @@ struct AdapterControlBlock /* dma_coherent used for memory free */ dma_addr_t dma_coherent_handle; /* dma_coherent_handle used for memory free */ - + dma_addr_t dma_coherent_handle_hbb_mu; + unsigned int uncache_size; uint8_t rqbuffer[ARCMSR_MAX_QBUFFER]; /* data collection buffer for read from 80331 */ int32_t rqbuf_firstindex; @@ -423,12 +447,23 @@ struct AdapterControlBlock #define ARECA_RAID_GOOD 0xaa uint32_t num_resets; uint32_t num_aborts; + uint32_t signature; uint32_t firm_request_len; uint32_t firm_numbers_queue; uint32_t firm_sdram_size; uint32_t firm_hd_channels; - char firm_model[12]; - char firm_version[20]; + uint32_t firm_cfg_version; + char firm_model[12]; + char firm_version[20]; + char device_map[20]; /*21,84-99*/ + struct work_struct arcmsr_do_message_isr_bh; + struct timer_list eternal_timer; + unsigned short fw_flag; + #define FW_NORMAL 0x0000 + #define FW_BOG 0x0001 + #define FW_DEADLOCK 0x0010 + atomic_t rq_map_token; + atomic_t ante_token_value; };/* HW_DEVICE_EXTENSION */ /* **************************************************************************** *** @@ -437,66 +472,31 @@ struct AdapterControlBlock **************************************************************************** *** */ struct CommandControlBlock -{ - struct ARCMSR_CDB arcmsr_cdb; - /* - ** 0-503 (size of CDB = 504): - ** arcmsr messenger scsi command descriptor size 504 bytes - */ - uint32_t cdb_shifted_phyaddr; - /* 504-507 */ - uint32_t reserved1; - /* 508-511 */ -#if BITS_PER_LONG == 64 +{ /*x32:sizeof struct_CCB=(32+60)byte, x64:sizeof struct_CCB=(64+60)byte*/ + struct list_head list; /*x32: 8byte, x64: 16byte*/ + struct scsi_cmnd *pcmd; /*8 bytes pointer of linux scsi command */ + struct AdapterControlBlock *acb; /*x32: 4byte, x64: 8byte*/ + uint32_t shifted_cdb_phyaddr; /*x32: 4byte, x64: 4byte*/ + uint16_t ccb_flags; /*x32: 2byte, x64: 2byte*/ + #define CCB_FLAG_READ 0x0000 + #define CCB_FLAG_WRITE 0x0001 + #define CCB_FLAG_ERROR 0x0002 + #define CCB_FLAG_FLUSHCACHE 0x0004 + #define CCB_FLAG_MASTER_ABORTED 0x0008 + uint16_t startdone; /*x32:2byte,x32:2byte*/ + #define ARCMSR_CCB_DONE 0x0000 + #define ARCMSR_CCB_START 0x55AA + #define ARCMSR_CCB_ABORTED 0xAA55 + #define ARCMSR_CCB_ILLEGAL 0xFFFF + #if BITS_PER_LONG == 64 /* ======================512+64 bytes======================== */ - struct list_head list; - /* 512-527 16 bytes next/prev ptrs for ccb lists */ - struct scsi_cmnd * pcmd; - /* 528-535 8 bytes pointer of linux scsi command */ - struct AdapterControlBlock * acb; - /* 536-543 8 bytes pointer of acb */ - - uint16_t ccb_flags; - /* 544-545 */ - #define CCB_FLAG_READ 0x0000 - #define CCB_FLAG_WRITE 0x0001 - #define CCB_FLAG_ERROR 0x0002 - #define CCB_FLAG_FLUSHCACHE 0x0004 - #define CCB_FLAG_MASTER_ABORTED 0x0008 - uint16_t startdone; - /* 546-547 */ - #define ARCMSR_CCB_DONE 0x0000 - #define ARCMSR_CCB_START 0x55AA - #define ARCMSR_CCB_ABORTED 0xAA55 - #define ARCMSR_CCB_ILLEGAL 0xFFFF - uint32_t reserved2[7]; - /* 548-551 552-555 556-559 560-563 564-567 568-571 572-575 */ -#else + uint32_t reserved[6]; /*24 byte*/ + #else /* ======================512+32 bytes======================== */ - struct list_head list; - /* 512-519 8 bytes next/prev ptrs for ccb lists */ - struct scsi_cmnd * pcmd; - /* 520-523 4 bytes pointer of linux scsi command */ - struct AdapterControlBlock * acb; - /* 524-527 4 bytes pointer of acb */ - - uint16_t ccb_flags; - /* 528-529 */ - #define CCB_FLAG_READ 0x0000 - #define CCB_FLAG_WRITE 0x0001 - #define CCB_FLAG_ERROR 0x0002 - #define CCB_FLAG_FLUSHCACHE 0x0004 - #define CCB_FLAG_MASTER_ABORTED 0x0008 - uint16_t startdone; - /* 530-531 */ - #define ARCMSR_CCB_DONE 0x0000 - #define ARCMSR_CCB_START 0x55AA - #define ARCMSR_CCB_ABORTED 0xAA55 - #define ARCMSR_CCB_ILLEGAL 0xFFFF - uint32_t reserved2[3]; - /* 532-535 536-539 540-543 */ -#endif - /* ========================================================== */ + uint32_t reserved[2]; /*8 byte*/ + #endif + /* ======================================================= */ + struct ARCMSR_CDB arcmsr_cdb; }; /* **************************************************************************** *** diff -uprN -X Documentation/dontdiff drivers/scsi/arcmsr/arcmsr_hba.c drivers/scsi/arcmsr.1.20.00.15-91209/arcmsr_hba.c --- drivers/scsi/arcmsr/arcmsr_hba.c 2010-02-25 02:52:17.000000000 +0800 +++ drivers/scsi/arcmsr.1.20.00.15-91209/arcmsr_hba.c 2010-03-10 11:52:14.000000000 +0800 @@ -70,12 +70,13 @@ #include <scsi/scsi_transport.h> #include <scsi/scsicam.h> #include "arcmsr.h" - -MODULE_AUTHOR("Erich Chen <support@xxxxxxxxxxxx>"); -MODULE_DESCRIPTION("ARECA (ARC11xx/12xx/13xx/16xx) SATA/SAS RAID HOST Adapter"); +MODULE_AUTHOR("Nick Cheng <support@xxxxxxxxxxxx>"); +MODULE_DESCRIPTION("ARECA (ARC11xx/12xx/16xx) SATA/SAS RAID Host Bus Adapter"); MODULE_LICENSE("Dual BSD/GPL"); MODULE_VERSION(ARCMSR_DRIVER_VERSION); - +static int sleeptime = 20; +static int retrycount = 12; +wait_queue_head_t wait_q; static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb, struct scsi_cmnd *cmd); static int arcmsr_iop_confirm(struct AdapterControlBlock *acb); @@ -95,14 +96,18 @@ static u32 arcmsr_disable_outbound_ints( static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb); static void arcmsr_flush_hba_cache(struct AdapterControlBlock *acb); static void arcmsr_flush_hbb_cache(struct AdapterControlBlock *acb); +static void arcmsr_request_device_map(unsigned long pacb); +static void arcmsr_request_hba_device_map(struct AdapterControlBlock *acb); +static void arcmsr_request_hbb_device_map(struct AdapterControlBlock *acb); +static void arcmsr_message_isr_bh_fn(struct work_struct *work); +static bool arcmsr_get_firmware_spec(struct AdapterControlBlock *acb); +static void arcmsr_start_adapter_bgrb(struct AdapterControlBlock *acb); + static const char *arcmsr_info(struct Scsi_Host *); static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb); static int arcmsr_adjust_disk_queue_depth(struct scsi_device *sdev, - int queue_depth, int reason) + int queue_depth) { - if (reason != SCSI_QDEPTH_DEFAULT) - return -EOPNOTSUPP; - if (queue_depth > ARCMSR_MAX_CMD_PERLUN) queue_depth = ARCMSR_MAX_CMD_PERLUN; scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, queue_depth); @@ -111,18 +116,18 @@ static int arcmsr_adjust_disk_queue_dept static struct scsi_host_template arcmsr_scsi_host_template = { .module = THIS_MODULE, - .name = "ARCMSR ARECA SATA/SAS RAID HOST Adapter" - ARCMSR_DRIVER_VERSION, + .name = "ARCMSR ARECA SATA/SAS RAID Host Bus Adapter" + ARCMSR_DRIVER_VERSION, .info = arcmsr_info, .queuecommand = arcmsr_queue_command, - .eh_abort_handler = arcmsr_abort, + .eh_abort_handler = arcmsr_abort, .eh_bus_reset_handler = arcmsr_bus_reset, .bios_param = arcmsr_bios_param, .change_queue_depth = arcmsr_adjust_disk_queue_depth, - .can_queue = ARCMSR_MAX_OUTSTANDING_CMD, - .this_id = ARCMSR_SCSI_INITIATOR_ID, - .sg_tablesize = ARCMSR_MAX_SG_ENTRIES, - .max_sectors = ARCMSR_MAX_XFER_SECTORS, + .can_queue = ARCMSR_MAX_FREECCB_NUM, + .this_id = ARCMSR_SCSI_INITIATOR_ID, + .sg_tablesize = ARCMSR_DEFAULT_SG_ENTRIES, + .max_sectors = ARCMSR_MAX_XFER_SECTORS_C, .cmd_per_lun = ARCMSR_MAX_CMD_PERLUN, .use_clustering = ENABLE_CLUSTERING, .shost_attrs = arcmsr_host_attrs, @@ -156,12 +161,13 @@ static struct pci_device_id arcmsr_devic {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1381)}, {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1680)}, {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1681)}, + {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1880)}, {0, 0}, /* Terminating entry */ }; MODULE_DEVICE_TABLE(pci, arcmsr_device_id_table); static struct pci_driver arcmsr_pci_driver = { .name = "arcmsr", - .id_table = arcmsr_device_id_table, + .id_table = arcmsr_device_id_table, .probe = arcmsr_probe, .remove = arcmsr_remove, .shutdown = arcmsr_shutdown, @@ -170,15 +176,72 @@ static struct pci_driver arcmsr_pci_driv #endif }; +static void arcmsr_free_mu(struct AdapterControlBlock *acb) +{ + switch (acb->adapter_type) { + case ACB_ADAPTER_TYPE_A: + break; + case ACB_ADAPTER_TYPE_B:{ + struct MessageUnit_B *reg = acb->pmuB; + dma_free_coherent(&acb->pdev->dev, + sizeof(struct MessageUnit_B), + reg, acb->dma_coherent_handle_hbb_mu); + } + } +} + +static bool arcmsr_remap_pciregion(struct AdapterControlBlock *acb) +{ + struct pci_dev *pdev = acb->pdev; + + switch (acb->adapter_type){ + case ACB_ADAPTER_TYPE_A:{ + acb->pmuA = ioremap(pci_resource_start(pdev,0), pci_resource_len(pdev,0)); + if (!acb->pmuA) { + printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", acb->host->host_no); + return false; + } + break; + } + case ACB_ADAPTER_TYPE_B:{ + void __iomem *mem_base0, *mem_base1; + mem_base0 = ioremap(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0)); + if (!mem_base0) { + printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", acb->host->host_no); + return false; + } + mem_base1 = ioremap(pci_resource_start(pdev, 2), pci_resource_len(pdev, 2)); + if (!mem_base1) { + iounmap(mem_base0); + printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", acb->host->host_no); + return false; + } + acb->mem_base0 = mem_base0; + acb->mem_base1 = mem_base1; + } + } + return true; +} + +static void arcmsr_unmap_pciregion(struct AdapterControlBlock *acb) +{ + switch (acb->adapter_type) { + case ACB_ADAPTER_TYPE_A:{ + iounmap(acb->pmuA); + } + case ACB_ADAPTER_TYPE_B:{ + iounmap(acb->mem_base0); + iounmap(acb->mem_base1); + } + } +} + static irqreturn_t arcmsr_do_interrupt(int irq, void *dev_id) { irqreturn_t handle_state; struct AdapterControlBlock *acb = dev_id; - spin_lock(acb->host->host_lock); handle_state = arcmsr_interrupt(acb); - spin_unlock(acb->host->host_lock); - return handle_state; } @@ -215,6 +278,7 @@ static void arcmsr_define_adapter_type(s struct pci_dev *pdev = acb->pdev; u16 dev_id; pci_read_config_word(pdev, PCI_DEVICE_ID, &dev_id); + acb->dev_id = dev_id; switch (dev_id) { case 0x1201 : { acb->adapter_type = ACB_ADAPTER_TYPE_B; @@ -223,334 +287,460 @@ static void arcmsr_define_adapter_type(s default : acb->adapter_type = ACB_ADAPTER_TYPE_A; } -} +} -static int arcmsr_alloc_ccb_pool(struct AdapterControlBlock *acb) +static uint8_t arcmsr_hba_wait_msgint_ready(struct AdapterControlBlock *acb) { + struct MessageUnit_A __iomem *reg = acb->pmuA; + uint32_t Index; + uint8_t Retries = 0x00; - switch (acb->adapter_type) { + do { + for (Index = 0; Index < 100; Index++) { + if (readl(®->outbound_intstatus) & + ARCMSR_MU_OUTBOUND_MESSAGE0_INT) { + writel(ARCMSR_MU_OUTBOUND_MESSAGE0_INT, + ®->outbound_intstatus); + return 0x00; + } + msleep(10); + }/*max 1 seconds*/ - case ACB_ADAPTER_TYPE_A: { - struct pci_dev *pdev = acb->pdev; - void *dma_coherent; - dma_addr_t dma_coherent_handle, dma_addr; - struct CommandControlBlock *ccb_tmp; - uint32_t intmask_org; - int i, j; + } while (Retries++ < 20);/*max 20 sec*/ + return 0xff; +} - acb->pmuA = pci_ioremap_bar(pdev, 0); - if (!acb->pmuA) { - printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", - acb->host->host_no); - return -ENOMEM; - } +static uint8_t arcmsr_hbb_wait_msgint_ready(struct AdapterControlBlock *acb) +{ + struct MessageUnit_B *reg = acb->pmuB; + uint32_t Index; + uint8_t Retries = 0x00; - dma_coherent = dma_alloc_coherent(&pdev->dev, - ARCMSR_MAX_FREECCB_NUM * - sizeof (struct CommandControlBlock) + 0x20, - &dma_coherent_handle, GFP_KERNEL); + do { + for (Index = 0; Index < 100; Index++) { + if (readl(reg->iop2drv_doorbell) + & ARCMSR_IOP2DRV_MESSAGE_CMD_DONE) { + writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN + , reg->iop2drv_doorbell); + writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell); + return 0x00; + } + msleep(10); + }/*max 1 seconds*/ - if (!dma_coherent) { - iounmap(acb->pmuA); - return -ENOMEM; - } + } while (Retries++ < 20);/*max 20 sec*/ + return 0xff; +} - acb->dma_coherent = dma_coherent; - acb->dma_coherent_handle = dma_coherent_handle; +static void arcmsr_flush_hba_cache(struct AdapterControlBlock *acb) +{ + struct MessageUnit_A __iomem *reg = acb->pmuA; + int retry_count = 30; - if (((unsigned long)dma_coherent & 0x1F)) { - dma_coherent = dma_coherent + - (0x20 - ((unsigned long)dma_coherent & 0x1F)); - dma_coherent_handle = dma_coherent_handle + - (0x20 - ((unsigned long)dma_coherent_handle & 0x1F)); + writel(ARCMSR_INBOUND_MESG0_FLUSH_CACHE, ®->inbound_msgaddr0); + do { + if (!arcmsr_hba_wait_msgint_ready(acb)) + break; + else { + retry_count--; + printk(KERN_NOTICE "arcmsr%d: wait 'flush adapter cache' \ + timeout, retry count down = %d \n", acb->host->host_no, retry_count); } + } while (retry_count != 0); +} - dma_addr = dma_coherent_handle; - ccb_tmp = (struct CommandControlBlock *)dma_coherent; - for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) { - ccb_tmp->cdb_shifted_phyaddr = dma_addr >> 5; - ccb_tmp->acb = acb; - acb->pccb_pool[i] = ccb_tmp; - list_add_tail(&ccb_tmp->list, &acb->ccb_free_list); - dma_addr = dma_addr + sizeof(struct CommandControlBlock); - ccb_tmp++; +static void arcmsr_flush_hbb_cache(struct AdapterControlBlock *acb) +{ + struct MessageUnit_B *reg = acb->pmuB; + int retry_count = 30; + + writel(ARCMSR_MESSAGE_FLUSH_CACHE, reg->drv2iop_doorbell); + do { + if (!arcmsr_hbb_wait_msgint_ready(acb)) + break; + else { + retry_count--; + printk(KERN_NOTICE "arcmsr%d: wait 'flush adapter cache' \ + timeout,retry count down = %d \n", acb->host->host_no, retry_count); } + } while (retry_count != 0); +} - acb->vir2phy_offset = (unsigned long)ccb_tmp -(unsigned long)dma_addr; - for (i = 0; i < ARCMSR_MAX_TARGETID; i++) - for (j = 0; j < ARCMSR_MAX_TARGETLUN; j++) - acb->devstate[i][j] = ARECA_RAID_GONE; +static void arcmsr_flush_adapter_cache(struct AdapterControlBlock *acb) +{ + switch (acb->adapter_type) { - /* - ** here we need to tell iop 331 our ccb_tmp.HighPart - ** if ccb_tmp.HighPart is not zero - */ - intmask_org = arcmsr_disable_outbound_ints(acb); + case ACB_ADAPTER_TYPE_A: { + arcmsr_flush_hba_cache(acb); } break; case ACB_ADAPTER_TYPE_B: { + arcmsr_flush_hbb_cache(acb); + } + } +} - struct pci_dev *pdev = acb->pdev; - struct MessageUnit_B *reg; - void __iomem *mem_base0, *mem_base1; - void *dma_coherent; - dma_addr_t dma_coherent_handle, dma_addr; - uint32_t intmask_org; - struct CommandControlBlock *ccb_tmp; - int i, j; +static int arcmsr_alloc_ccb_pool(struct AdapterControlBlock *acb) +{ + struct pci_dev *pdev = acb->pdev; + switch (acb->adapter_type) { + case ACB_ADAPTER_TYPE_A: { - dma_coherent = dma_alloc_coherent(&pdev->dev, - ((ARCMSR_MAX_FREECCB_NUM * - sizeof(struct CommandControlBlock) + 0x20) + - sizeof(struct MessageUnit_B)), - &dma_coherent_handle, GFP_KERNEL); - if (!dma_coherent) - return -ENOMEM; - - acb->dma_coherent = dma_coherent; - acb->dma_coherent_handle = dma_coherent_handle; - - if (((unsigned long)dma_coherent & 0x1F)) { - dma_coherent = dma_coherent + - (0x20 - ((unsigned long)dma_coherent & 0x1F)); - dma_coherent_handle = dma_coherent_handle + - (0x20 - ((unsigned long)dma_coherent_handle & 0x1F)); + void *dma_coherent; + dma_addr_t dma_coherent_handle; + struct CommandControlBlock *ccb_tmp; + int i = 0, j = 0; + dma_addr_t cdb_phyaddr; + unsigned long roundup_ccbsize = 0; + unsigned long max_xfer_len; + unsigned long max_sg_entrys; + uint32_t firm_config_version; + + for (i = 0; i < ARCMSR_MAX_TARGETID; i++) + for (j = 0; j < ARCMSR_MAX_TARGETLUN; j++) + acb->devstate[i][j] = ARECA_RAID_GONE; + + max_xfer_len = ARCMSR_MAX_XFER_LEN; + max_sg_entrys = ARCMSR_DEFAULT_SG_ENTRIES; + firm_config_version = acb->firm_cfg_version; + if((firm_config_version & 0xFF) >= 3){ + max_xfer_len = (ARCMSR_CDB_SG_PAGE_LENGTH << ((firm_config_version >> 8) & 0xFF)) * 1024;/* max 16M byte */ + max_sg_entrys = (max_xfer_len/4096); + } + acb->host->max_sectors = max_xfer_len/512; + acb->host->sg_tablesize = max_sg_entrys; + roundup_ccbsize = roundup(sizeof(struct CommandControlBlock) + max_sg_entrys * sizeof(struct SG64ENTRY), 32); + acb->uncache_size = roundup_ccbsize * ARCMSR_MAX_FREECCB_NUM; + dma_coherent = dma_alloc_coherent(&pdev->dev, acb->uncache_size, &dma_coherent_handle, GFP_KERNEL); + if (!dma_coherent) { + printk("arcmsr%d: dma_alloc_coherent got error \n", acb->host->host_no); + return -ENOMEM; + } + memset(dma_coherent, 0, acb->uncache_size); + acb->dma_coherent = dma_coherent; + acb->dma_coherent_handle = dma_coherent_handle; + ccb_tmp = (struct CommandControlBlock *)dma_coherent; + acb->vir2phy_offset = (unsigned long)dma_coherent - (unsigned long)dma_coherent_handle; + for(i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++){ + cdb_phyaddr = dma_coherent_handle + offsetof(struct CommandControlBlock, arcmsr_cdb); + ccb_tmp->shifted_cdb_phyaddr = cdb_phyaddr >> 5; + acb->pccb_pool[i] = ccb_tmp; + ccb_tmp->acb = acb; + INIT_LIST_HEAD(&ccb_tmp->list); + list_add_tail(&ccb_tmp->list, &acb->ccb_free_list); + ccb_tmp = (struct CommandControlBlock *)((unsigned long)ccb_tmp + roundup_ccbsize); + dma_coherent_handle = dma_coherent_handle + roundup_ccbsize; + } + break; } + case ACB_ADAPTER_TYPE_B: { - dma_addr = dma_coherent_handle; - ccb_tmp = (struct CommandControlBlock *)dma_coherent; - for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) { - ccb_tmp->cdb_shifted_phyaddr = dma_addr >> 5; - ccb_tmp->acb = acb; - acb->pccb_pool[i] = ccb_tmp; - list_add_tail(&ccb_tmp->list, &acb->ccb_free_list); - dma_addr = dma_addr + sizeof(struct CommandControlBlock); - ccb_tmp++; - } - - reg = (struct MessageUnit_B *)(dma_coherent + - ARCMSR_MAX_FREECCB_NUM * sizeof(struct CommandControlBlock)); - acb->pmuB = reg; - mem_base0 = pci_ioremap_bar(pdev, 0); - if (!mem_base0) - goto out; - - mem_base1 = pci_ioremap_bar(pdev, 2); - if (!mem_base1) { - iounmap(mem_base0); - goto out; - } - - reg->drv2iop_doorbell_reg = mem_base0 + ARCMSR_DRV2IOP_DOORBELL; - reg->drv2iop_doorbell_mask_reg = mem_base0 + - ARCMSR_DRV2IOP_DOORBELL_MASK; - reg->iop2drv_doorbell_reg = mem_base0 + ARCMSR_IOP2DRV_DOORBELL; - reg->iop2drv_doorbell_mask_reg = mem_base0 + - ARCMSR_IOP2DRV_DOORBELL_MASK; - reg->ioctl_wbuffer_reg = mem_base1 + ARCMSR_IOCTL_WBUFFER; - reg->ioctl_rbuffer_reg = mem_base1 + ARCMSR_IOCTL_RBUFFER; - reg->msgcode_rwbuffer_reg = mem_base1 + ARCMSR_MSGCODE_RWBUFFER; - - acb->vir2phy_offset = (unsigned long)ccb_tmp -(unsigned long)dma_addr; - for (i = 0; i < ARCMSR_MAX_TARGETID; i++) - for (j = 0; j < ARCMSR_MAX_TARGETLUN; j++) - acb->devstate[i][j] = ARECA_RAID_GOOD; - - /* - ** here we need to tell iop 331 our ccb_tmp.HighPart - ** if ccb_tmp.HighPart is not zero - */ - intmask_org = arcmsr_disable_outbound_ints(acb); + void *dma_coherent; + dma_addr_t dma_coherent_handle; + struct CommandControlBlock *ccb_tmp; + uint32_t cdb_phyaddr; + unsigned int roundup_ccbsize = 0; + unsigned long max_xfer_len; + unsigned long max_sg_entrys; + unsigned long firm_config_version; + unsigned long max_freeccb_num=0; + int i = 0, j = 0; + + max_freeccb_num = ARCMSR_MAX_FREECCB_NUM; + max_xfer_len = ARCMSR_MAX_XFER_LEN; + max_sg_entrys = ARCMSR_DEFAULT_SG_ENTRIES; + firm_config_version = acb->firm_cfg_version; + if((firm_config_version & 0xFF) >= 3){ + max_xfer_len = (ARCMSR_CDB_SG_PAGE_LENGTH << + ((firm_config_version >> 8) & 0xFF)) * 1024;/* max 16M byte */ + max_sg_entrys = (max_xfer_len/4096);/* max 4097 sg entry*/ + } + acb->host->max_sectors = max_xfer_len / 512; + acb->host->sg_tablesize = max_sg_entrys; + roundup_ccbsize = roundup(sizeof(struct CommandControlBlock)+ + (max_sg_entrys - 1) * sizeof(struct SG64ENTRY), 32); + acb->uncache_size = roundup_ccbsize * ARCMSR_MAX_FREECCB_NUM; + dma_coherent = dma_alloc_coherent(&pdev->dev,acb->uncache_size, + &dma_coherent_handle, GFP_KERNEL); + + if (!dma_coherent) { + printk(KERN_NOTICE "DMA allocation failed...........................\n"); + return -ENOMEM; + } + memset(dma_coherent, 0, acb->uncache_size); + acb->dma_coherent = dma_coherent; + acb->dma_coherent_handle = dma_coherent_handle; + ccb_tmp = (struct CommandControlBlock *)dma_coherent; + acb->vir2phy_offset = (unsigned long)dma_coherent - + (unsigned long)dma_coherent_handle; + for(i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++){ + cdb_phyaddr = dma_coherent_handle + + offsetof(struct CommandControlBlock, arcmsr_cdb); + ccb_tmp->shifted_cdb_phyaddr = cdb_phyaddr >> 5; + acb->pccb_pool[i] = ccb_tmp; + ccb_tmp->acb = acb; + INIT_LIST_HEAD(&ccb_tmp->list); + list_add_tail(&ccb_tmp->list, &acb->ccb_free_list); + ccb_tmp = (struct CommandControlBlock *)((unsigned long)ccb_tmp + + roundup_ccbsize); + dma_coherent_handle = dma_coherent_handle + roundup_ccbsize; + } + for (i = 0; i < ARCMSR_MAX_TARGETID; i++) + for (j = 0; j < ARCMSR_MAX_TARGETLUN; j++) + acb->devstate[i][j] = ARECA_RAID_GONE; } break; } return 0; +} +static void arcmsr_message_isr_bh_fn(struct work_struct *work) +{ + struct AdapterControlBlock *acb = container_of(work,struct AdapterControlBlock, arcmsr_do_message_isr_bh); + switch (acb->adapter_type) { + case ACB_ADAPTER_TYPE_A: { + + struct MessageUnit_A __iomem *reg = acb->pmuA; + char *acb_dev_map = (char *)acb->device_map; + uint32_t __iomem *signature = (uint32_t __iomem*) (®->message_rwbuffer[0]); + char __iomem *devicemap = (char __iomem*) (®->message_rwbuffer[21]); + int target, lun; + struct scsi_device *psdev; + char diff; + + atomic_inc(&acb->rq_map_token); + if (readl(signature) == ARCMSR_SIGNATURE_GET_CONFIG) { + for(target = 0; target < ARCMSR_MAX_TARGETID -1; target++) { + diff = (*acb_dev_map)^readb(devicemap); + if (diff != 0) { + char temp; + *acb_dev_map = readb(devicemap); + temp =*acb_dev_map; + for(lun = 0; lun < ARCMSR_MAX_TARGETLUN; lun++) { + if((temp & 0x01)==1 && (diff & 0x01) == 1) { + scsi_add_device(acb->host, 0, target, lun); + }else if((temp & 0x01) == 0 && (diff & 0x01) == 1) { + psdev = scsi_device_lookup(acb->host, 0, target, lun); + if (psdev != NULL ) { + scsi_remove_device(psdev); + scsi_device_put(psdev); + } + } + temp >>= 1; + diff >>= 1; + } + } + devicemap++; + acb_dev_map++; + } + } + break; + } -out: - dma_free_coherent(&acb->pdev->dev, - (ARCMSR_MAX_FREECCB_NUM * sizeof(struct CommandControlBlock) + 0x20 + - sizeof(struct MessageUnit_B)), acb->dma_coherent, acb->dma_coherent_handle); - return -ENOMEM; + case ACB_ADAPTER_TYPE_B: { + struct MessageUnit_B *reg = acb->pmuB; + char *acb_dev_map = (char *)acb->device_map; + uint32_t __iomem *signature = (uint32_t __iomem*)(®->message_rwbuffer[0]); + char __iomem *devicemap = (char __iomem*)(®->message_rwbuffer[21]); + int target, lun; + struct scsi_device *psdev; + char diff; + + atomic_inc(&acb->rq_map_token); + if (readl(signature) == ARCMSR_SIGNATURE_GET_CONFIG) { + for(target = 0; target < ARCMSR_MAX_TARGETID -1; target++) { + diff = (*acb_dev_map)^readb(devicemap); + if (diff != 0) { + char temp; + *acb_dev_map = readb(devicemap); + temp =*acb_dev_map; + for(lun = 0; lun < ARCMSR_MAX_TARGETLUN; lun++) { + if((temp & 0x01)==1 && (diff & 0x01) == 1) { + scsi_add_device(acb->host, 0, target, lun); + }else if((temp & 0x01) == 0 && (diff & 0x01) == 1) { + psdev = scsi_device_lookup(acb->host, 0, target, lun); + if (psdev != NULL ) { + scsi_remove_device(psdev); + scsi_device_put(psdev); + } + } + temp >>= 1; + diff >>= 1; + } + } + devicemap++; + acb_dev_map++; + } + } + } + } } -static int arcmsr_probe(struct pci_dev *pdev, - const struct pci_device_id *id) +static int arcmsr_probe(struct pci_dev *pdev, const struct pci_device_id *id) { struct Scsi_Host *host; struct AdapterControlBlock *acb; - uint8_t bus, dev_fun; + uint8_t bus,dev_fun; int error; error = pci_enable_device(pdev); - if (error) - goto out; - pci_set_master(pdev); - - host = scsi_host_alloc(&arcmsr_scsi_host_template, - sizeof(struct AdapterControlBlock)); - if (!host) { - error = -ENOMEM; - goto out_disable_device; - } - acb = (struct AdapterControlBlock *)host->hostdata; - memset(acb, 0, sizeof (struct AdapterControlBlock)); - - error = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); - if (error) { - error = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); - if (error) { + if(error){ + return -ENODEV; + } + host = scsi_host_alloc(&arcmsr_scsi_host_template, sizeof(struct AdapterControlBlock)); + if(!host){ + goto pci_disable_dev; + } + error = pci_set_dma_mask(pdev, DMA_64BIT_MASK); + if(error){ + error = pci_set_dma_mask(pdev, DMA_32BIT_MASK); + if(error){ printk(KERN_WARNING "scsi%d: No suitable DMA mask available\n", host->host_no); - goto out_host_put; + goto scsi_host_release; } } + init_waitqueue_head(&wait_q); bus = pdev->bus->number; dev_fun = pdev->devfn; - acb->host = host; + acb = (struct AdapterControlBlock *) host->hostdata; + memset(acb,0,sizeof(struct AdapterControlBlock)); acb->pdev = pdev; - host->max_sectors = ARCMSR_MAX_XFER_SECTORS; + acb->host = host; host->max_lun = ARCMSR_MAX_TARGETLUN; - host->max_id = ARCMSR_MAX_TARGETID;/*16:8*/ - host->max_cmd_len = 16; /*this is issue of 64bit LBA, over 2T byte*/ - host->sg_tablesize = ARCMSR_MAX_SG_ENTRIES; - host->can_queue = ARCMSR_MAX_FREECCB_NUM; /* max simultaneous cmds */ - host->cmd_per_lun = ARCMSR_MAX_CMD_PERLUN; + host->max_id = ARCMSR_MAX_TARGETID; /*16:8*/ + host->max_cmd_len = 16; /*this is issue of 64bit LBA ,over 2T byte*/ + host->can_queue = ARCMSR_MAX_FREECCB_NUM; /* max simultaneous cmds */ + host->cmd_per_lun = ARCMSR_MAX_CMD_PERLUN; host->this_id = ARCMSR_SCSI_INITIATOR_ID; host->unique_id = (bus << 8) | dev_fun; - host->irq = pdev->irq; + pci_set_drvdata(pdev, host); + pci_set_master(pdev); error = pci_request_regions(pdev, "arcmsr"); - if (error) { - goto out_host_put; + if(error){ + goto scsi_host_release; } - arcmsr_define_adapter_type(acb); - + spin_lock_init(&acb->eh_lock); + spin_lock_init(&acb->ccblist_lock); acb->acb_flags |= (ACB_F_MESSAGE_WQBUFFER_CLEARED | - ACB_F_MESSAGE_RQBUFFER_CLEARED | - ACB_F_MESSAGE_WQBUFFER_READED); + ACB_F_MESSAGE_RQBUFFER_CLEARED | + ACB_F_MESSAGE_WQBUFFER_READED); acb->acb_flags &= ~ACB_F_SCSISTOPADAPTER; INIT_LIST_HEAD(&acb->ccb_free_list); - + arcmsr_define_adapter_type(acb); + error = arcmsr_remap_pciregion(acb); + if(!error){ + goto pci_release_regs; + } + error = arcmsr_get_firmware_spec(acb); + if(!error){ + goto unmap_pci_region; + } error = arcmsr_alloc_ccb_pool(acb); - if (error) - goto out_release_regions; - - error = request_irq(pdev->irq, arcmsr_do_interrupt, - IRQF_SHARED, "arcmsr", acb); - if (error) - goto out_free_ccb_pool; - + if(error){ + goto free_hbb_mu; + } arcmsr_iop_init(acb); - pci_set_drvdata(pdev, host); - if (strncmp(acb->firm_version, "V1.42", 5) >= 0) - host->max_sectors= ARCMSR_MAX_XFER_SECTORS_B; - error = scsi_add_host(host, &pdev->dev); - if (error) - goto out_free_irq; - - error = arcmsr_alloc_sysfs_attr(acb); - if (error) - goto out_free_sysfs; - - scsi_scan_host(host); + if(error){ + goto RAID_controller_stop; + } + error = request_irq(pdev->irq, arcmsr_do_interrupt, IRQF_SHARED, "arcmsr", acb); + if(error){ + goto scsi_host_remove; + } + host->irq = pdev->irq; + scsi_scan_host(host); + INIT_WORK (&acb->arcmsr_do_message_isr_bh, arcmsr_message_isr_bh_fn); + atomic_set(&acb->rq_map_token, 16); + atomic_set(&acb->ante_token_value, 16); + acb->fw_flag = FW_NORMAL; + init_timer(&acb->eternal_timer); + acb->eternal_timer.expires = jiffies + msecs_to_jiffies(6 * HZ); + acb->eternal_timer.data = (unsigned long) acb; + acb->eternal_timer.function = &arcmsr_request_device_map; + add_timer(&acb->eternal_timer); #ifdef CONFIG_SCSI_ARCMSR_AER - pci_enable_pcie_error_reporting(pdev); + pci_enable_pcie_error_reporting(pdev); #endif + if(arcmsr_alloc_sysfs_attr(acb)) + goto out_free_sysfs; return 0; - out_free_sysfs: - out_free_irq: - free_irq(pdev->irq, acb); - out_free_ccb_pool: - arcmsr_free_ccb_pool(acb); - out_release_regions: - pci_release_regions(pdev); - out_host_put: - scsi_host_put(host); - out_disable_device: - pci_disable_device(pdev); - out: - return error; -} - -static uint8_t arcmsr_hba_wait_msgint_ready(struct AdapterControlBlock *acb) -{ - struct MessageUnit_A __iomem *reg = acb->pmuA; - uint32_t Index; - uint8_t Retries = 0x00; - - do { - for (Index = 0; Index < 100; Index++) { - if (readl(®->outbound_intstatus) & - ARCMSR_MU_OUTBOUND_MESSAGE0_INT) { - writel(ARCMSR_MU_OUTBOUND_MESSAGE0_INT, - ®->outbound_intstatus); - return 0x00; - } - msleep(10); - }/*max 1 seconds*/ - - } while (Retries++ < 20);/*max 20 sec*/ - return 0xff; -} - -static uint8_t arcmsr_hbb_wait_msgint_ready(struct AdapterControlBlock *acb) -{ - struct MessageUnit_B *reg = acb->pmuB; - uint32_t Index; - uint8_t Retries = 0x00; - - do { - for (Index = 0; Index < 100; Index++) { - if (readl(reg->iop2drv_doorbell_reg) - & ARCMSR_IOP2DRV_MESSAGE_CMD_DONE) { - writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN - , reg->iop2drv_doorbell_reg); - writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell_reg); - return 0x00; - } - msleep(10); - }/*max 1 seconds*/ - - } while (Retries++ < 20);/*max 20 sec*/ - return 0xff; + out_free_sysfs: + scsi_host_remove: + scsi_remove_host(host); + RAID_controller_stop: + arcmsr_stop_adapter_bgrb(acb); + arcmsr_flush_adapter_cache(acb); + arcmsr_free_ccb_pool(acb); + free_hbb_mu: + arcmsr_free_mu(acb); + unmap_pci_region: + arcmsr_unmap_pciregion(acb); + pci_release_regs: + pci_release_regions(pdev); + scsi_host_release: + scsi_host_put(host); + pci_disable_dev: + pci_disable_device(pdev); + return -ENODEV; } -static void arcmsr_abort_hba_allcmd(struct AdapterControlBlock *acb) +static uint8_t arcmsr_abort_hba_allcmd(struct AdapterControlBlock *acb) { struct MessageUnit_A __iomem *reg = acb->pmuA; writel(ARCMSR_INBOUND_MESG0_ABORT_CMD, ®->inbound_msgaddr0); - if (arcmsr_hba_wait_msgint_ready(acb)) + if (arcmsr_hba_wait_msgint_ready(acb)){ printk(KERN_NOTICE "arcmsr%d: wait 'abort all outstanding command' timeout \n" , acb->host->host_no); + return 0xff; + } + return 0x00; } -static void arcmsr_abort_hbb_allcmd(struct AdapterControlBlock *acb) +static uint8_t arcmsr_abort_hbb_allcmd(struct AdapterControlBlock *acb) { struct MessageUnit_B *reg = acb->pmuB; - writel(ARCMSR_MESSAGE_ABORT_CMD, reg->drv2iop_doorbell_reg); - if (arcmsr_hbb_wait_msgint_ready(acb)) + writel(ARCMSR_MESSAGE_ABORT_CMD, reg->drv2iop_doorbell); + if (arcmsr_hbb_wait_msgint_ready(acb)) { printk(KERN_NOTICE "arcmsr%d: wait 'abort all outstanding command' timeout \n" , acb->host->host_no); + return 0xff; + } + return 0x00; } -static void arcmsr_abort_allcmd(struct AdapterControlBlock *acb) +static uint8_t arcmsr_abort_allcmd(struct AdapterControlBlock *acb) { + uint8_t rtnval = 0; switch (acb->adapter_type) { case ACB_ADAPTER_TYPE_A: { - arcmsr_abort_hba_allcmd(acb); + rtnval = arcmsr_abort_hba_allcmd(acb); } break; case ACB_ADAPTER_TYPE_B: { - arcmsr_abort_hbb_allcmd(acb); + rtnval = arcmsr_abort_hbb_allcmd(acb); } } + return rtnval; +} + +static bool arcmsr_hbb_enable_driver_mode(struct AdapterControlBlock *pacb) +{ + struct MessageUnit_B *reg = pacb->pmuB; + + writel(ARCMSR_MESSAGE_START_DRIVER_MODE, reg->drv2iop_doorbell); + if(arcmsr_hbb_wait_msgint_ready(pacb)){ + printk(KERN_ERR "arcmsr%d: can't set driver mode. \n", pacb->host->host_no); + return false; + } + return true; } static void arcmsr_pci_unmap_dma(struct CommandControlBlock *ccb) @@ -560,69 +750,22 @@ static void arcmsr_pci_unmap_dma(struct scsi_dma_unmap(pcmd); } -static void arcmsr_ccb_complete(struct CommandControlBlock *ccb, int stand_flag) +static void arcmsr_ccb_complete(struct CommandControlBlock *ccb) { struct AdapterControlBlock *acb = ccb->acb; struct scsi_cmnd *pcmd = ccb->pcmd; + unsigned long flags; + atomic_dec(&acb->ccboutstandingcount); arcmsr_pci_unmap_dma(ccb); - if (stand_flag == 1) - atomic_dec(&acb->ccboutstandingcount); ccb->startdone = ARCMSR_CCB_DONE; ccb->ccb_flags = 0; + spin_lock_irqsave(&acb->ccblist_lock, flags); list_add_tail(&ccb->list, &acb->ccb_free_list); + spin_unlock_irqrestore(&acb->ccblist_lock, flags); pcmd->scsi_done(pcmd); } -static void arcmsr_flush_hba_cache(struct AdapterControlBlock *acb) -{ - struct MessageUnit_A __iomem *reg = acb->pmuA; - int retry_count = 30; - - writel(ARCMSR_INBOUND_MESG0_FLUSH_CACHE, ®->inbound_msgaddr0); - do { - if (!arcmsr_hba_wait_msgint_ready(acb)) - break; - else { - retry_count--; - printk(KERN_NOTICE "arcmsr%d: wait 'flush adapter cache' \ - timeout, retry count down = %d \n", acb->host->host_no, retry_count); - } - } while (retry_count != 0); -} - -static void arcmsr_flush_hbb_cache(struct AdapterControlBlock *acb) -{ - struct MessageUnit_B *reg = acb->pmuB; - int retry_count = 30; - - writel(ARCMSR_MESSAGE_FLUSH_CACHE, reg->drv2iop_doorbell_reg); - do { - if (!arcmsr_hbb_wait_msgint_ready(acb)) - break; - else { - retry_count--; - printk(KERN_NOTICE "arcmsr%d: wait 'flush adapter cache' \ - timeout,retry count down = %d \n", acb->host->host_no, retry_count); - } - } while (retry_count != 0); -} - -static void arcmsr_flush_adapter_cache(struct AdapterControlBlock *acb) -{ - switch (acb->adapter_type) { - - case ACB_ADAPTER_TYPE_A: { - arcmsr_flush_hba_cache(acb); - } - break; - - case ACB_ADAPTER_TYPE_B: { - arcmsr_flush_hbb_cache(acb); - } - } -} - static void arcmsr_report_sense_info(struct CommandControlBlock *ccb) { @@ -648,8 +791,7 @@ static u32 arcmsr_disable_outbound_ints( case ACB_ADAPTER_TYPE_A : { struct MessageUnit_A __iomem *reg = acb->pmuA; - orig_mask = readl(®->outbound_intmask)|\ - ARCMSR_MU_OUTBOUND_MESSAGE0_INTMASKENABLE; + orig_mask = readl(®->outbound_intmask); writel(orig_mask|ARCMSR_MU_OUTBOUND_ALL_INTMASKENABLE, \ ®->outbound_intmask); } @@ -657,16 +799,15 @@ static u32 arcmsr_disable_outbound_ints( case ACB_ADAPTER_TYPE_B : { struct MessageUnit_B *reg = acb->pmuB; - orig_mask = readl(reg->iop2drv_doorbell_mask_reg) & \ - (~ARCMSR_IOP2DRV_MESSAGE_CMD_DONE); - writel(0, reg->iop2drv_doorbell_mask_reg); + orig_mask = readl(reg->iop2drv_doorbell_mask); + writel(0, reg->iop2drv_doorbell_mask); } break; } return orig_mask; } -static void arcmsr_report_ccb_state(struct AdapterControlBlock *acb, \ +static void arcmsr_report_ccb_state(struct AdapterControlBlock *acb, struct CommandControlBlock *ccb, uint32_t flag_ccb) { @@ -677,13 +818,13 @@ static void arcmsr_report_ccb_state(stru if (acb->devstate[id][lun] == ARECA_RAID_GONE) acb->devstate[id][lun] = ARECA_RAID_GOOD; ccb->pcmd->result = DID_OK << 16; - arcmsr_ccb_complete(ccb, 1); + arcmsr_ccb_complete(ccb); } else { switch (ccb->arcmsr_cdb.DeviceStatus) { case ARCMSR_DEV_SELECT_TIMEOUT: { acb->devstate[id][lun] = ARECA_RAID_GONE; ccb->pcmd->result = DID_NO_CONNECT << 16; - arcmsr_ccb_complete(ccb, 1); + arcmsr_ccb_complete(ccb); } break; @@ -692,14 +833,14 @@ static void arcmsr_report_ccb_state(stru case ARCMSR_DEV_INIT_FAIL: { acb->devstate[id][lun] = ARECA_RAID_GONE; ccb->pcmd->result = DID_BAD_TARGET << 16; - arcmsr_ccb_complete(ccb, 1); + arcmsr_ccb_complete(ccb); } break; case ARCMSR_DEV_CHECK_CONDITION: { acb->devstate[id][lun] = ARECA_RAID_GOOD; arcmsr_report_sense_info(ccb); - arcmsr_ccb_complete(ccb, 1); + arcmsr_ccb_complete(ccb); } break; @@ -714,7 +855,7 @@ static void arcmsr_report_ccb_state(stru , ccb->arcmsr_cdb.DeviceStatus); acb->devstate[id][lun] = ARECA_RAID_GONE; ccb->pcmd->result = DID_NO_CONNECT << 16; - arcmsr_ccb_complete(ccb, 1); + arcmsr_ccb_complete(ccb); break; } } @@ -724,14 +865,19 @@ static void arcmsr_drain_donequeue(struc { struct CommandControlBlock *ccb; + struct ARCMSR_CDB *arcmsr_cdb; + int id, lun; - ccb = (struct CommandControlBlock *)(acb->vir2phy_offset + (flag_ccb << 5)); + arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset + (flag_ccb << 5)); + ccb = container_of(arcmsr_cdb, struct CommandControlBlock, arcmsr_cdb); if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) { if (ccb->startdone == ARCMSR_CCB_ABORTED) { struct scsi_cmnd *abortcmd = ccb->pcmd; if (abortcmd) { + id = abortcmd->device->id; + lun = abortcmd->device->lun; abortcmd->result |= DID_ABORT << 16; - arcmsr_ccb_complete(ccb, 1); + arcmsr_ccb_complete(ccb); printk(KERN_NOTICE "arcmsr%d: ccb ='0x%p' \ isr got aborted command \n", acb->host->host_no, ccb); } @@ -794,16 +940,18 @@ static void arcmsr_remove(struct pci_dev struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata; int poll_count = 0; - arcmsr_free_sysfs_attr(acb); scsi_remove_host(host); - arcmsr_stop_adapter_bgrb(acb); - arcmsr_flush_adapter_cache(acb); + scsi_host_put(host); + flush_scheduled_work(); + del_timer_sync(&acb->eternal_timer); arcmsr_disable_outbound_ints(acb); + arcmsr_stop_adapter_bgrb(acb); + arcmsr_flush_adapter_cache(acb); acb->acb_flags |= ACB_F_SCSISTOPADAPTER; acb->acb_flags &= ~ACB_F_IOP_INITED; - for (poll_count = 0; poll_count < ARCMSR_MAX_OUTSTANDING_CMD; poll_count++) { + for (poll_count = 0; poll_count < ARCMSR_MAX_OUTSTANDING_CMD; poll_count++){ if (!atomic_read(&acb->ccboutstandingcount)) break; arcmsr_interrupt(acb);/* FIXME: need spinlock */ @@ -820,17 +968,14 @@ static void arcmsr_remove(struct pci_dev if (ccb->startdone == ARCMSR_CCB_START) { ccb->startdone = ARCMSR_CCB_ABORTED; ccb->pcmd->result = DID_ABORT << 16; - arcmsr_ccb_complete(ccb, 1); + arcmsr_ccb_complete(ccb); } } } - free_irq(pdev->irq, acb); arcmsr_free_ccb_pool(acb); + arcmsr_free_mu(acb); pci_release_regions(pdev); - - scsi_host_put(host); - pci_disable_device(pdev); pci_set_drvdata(pdev, NULL); } @@ -840,7 +985,9 @@ static void arcmsr_shutdown(struct pci_d struct Scsi_Host *host = pci_get_drvdata(pdev); struct AdapterControlBlock *acb = (struct AdapterControlBlock *)host->hostdata; - + del_timer_sync(&acb->eternal_timer); + arcmsr_disable_outbound_ints(acb); + flush_scheduled_work(); arcmsr_stop_adapter_bgrb(acb); arcmsr_flush_adapter_cache(acb); } @@ -860,7 +1007,7 @@ static void arcmsr_module_exit(void) module_init(arcmsr_module_init); module_exit(arcmsr_module_exit); -static void arcmsr_enable_outbound_ints(struct AdapterControlBlock *acb, \ +static void arcmsr_enable_outbound_ints(struct AdapterControlBlock *acb, u32 intmask_org) { u32 mask; @@ -870,7 +1017,8 @@ static void arcmsr_enable_outbound_ints( case ACB_ADAPTER_TYPE_A : { struct MessageUnit_A __iomem *reg = acb->pmuA; mask = intmask_org & ~(ARCMSR_MU_OUTBOUND_POSTQUEUE_INTMASKENABLE | - ARCMSR_MU_OUTBOUND_DOORBELL_INTMASKENABLE); + ARCMSR_MU_OUTBOUND_DOORBELL_INTMASKENABLE| + ARCMSR_MU_OUTBOUND_MESSAGE0_INTMASKENABLE); writel(mask, ®->outbound_intmask); acb->outbound_int_enable = ~(intmask_org & mask) & 0x000000ff; } @@ -878,9 +1026,11 @@ static void arcmsr_enable_outbound_ints( case ACB_ADAPTER_TYPE_B : { struct MessageUnit_B *reg = acb->pmuB; - mask = intmask_org | (ARCMSR_IOP2DRV_DATA_WRITE_OK | \ - ARCMSR_IOP2DRV_DATA_READ_OK | ARCMSR_IOP2DRV_CDB_DONE); - writel(mask, reg->iop2drv_doorbell_mask_reg); + mask = intmask_org | (ARCMSR_IOP2DRV_DATA_WRITE_OK | + ARCMSR_IOP2DRV_DATA_READ_OK | + ARCMSR_IOP2DRV_CDB_DONE | + ARCMSR_IOP2DRV_MESSAGE_CMD_DONE); + writel(mask, reg->iop2drv_doorbell_mask); acb->outbound_int_enable = (intmask_org | mask) & 0x0000000f; } } @@ -893,6 +1043,9 @@ static int arcmsr_build_ccb(struct Adapt int8_t *psge = (int8_t *)&arcmsr_cdb->u; __le32 address_lo, address_hi; int arccdbsize = 0x30; + __le32 length = 0; + int i, cdb_sgcount = 0; + struct scatterlist *sg; int nseg; ccb->pcmd = pcmd; @@ -902,49 +1055,42 @@ static int arcmsr_build_ccb(struct Adapt arcmsr_cdb->LUN = pcmd->device->lun; arcmsr_cdb->Function = 1; arcmsr_cdb->CdbLength = (uint8_t)pcmd->cmd_len; - arcmsr_cdb->Context = (unsigned long)arcmsr_cdb; + arcmsr_cdb->Context = 0; memcpy(arcmsr_cdb->Cdb, pcmd->cmnd, pcmd->cmd_len); nseg = scsi_dma_map(pcmd); - if (nseg > ARCMSR_MAX_SG_ENTRIES) + if(nseg > acb->host->sg_tablesize || nseg < 0) return FAILED; - BUG_ON(nseg < 0); - - if (nseg) { - __le32 length; - int i, cdb_sgcount = 0; - struct scatterlist *sg; - - /* map stor port SG list to our iop SG List. */ - scsi_for_each_sg(pcmd, sg, nseg, i) { - /* Get the physical address of the current data pointer */ - length = cpu_to_le32(sg_dma_len(sg)); - address_lo = cpu_to_le32(dma_addr_lo32(sg_dma_address(sg))); - address_hi = cpu_to_le32(dma_addr_hi32(sg_dma_address(sg))); - if (address_hi == 0) { - struct SG32ENTRY *pdma_sg = (struct SG32ENTRY *)psge; - - pdma_sg->address = address_lo; - pdma_sg->length = length; - psge += sizeof (struct SG32ENTRY); - arccdbsize += sizeof (struct SG32ENTRY); - } else { - struct SG64ENTRY *pdma_sg = (struct SG64ENTRY *)psge; + /* map stor port SG list to our iop SG List. */ + scsi_for_each_sg(pcmd, sg, nseg, i) { + /* Get the physical address of the current data pointer */ + length = cpu_to_le32(sg_dma_len(sg)); + address_lo = cpu_to_le32(dma_addr_lo32(sg_dma_address(sg))); + address_hi = cpu_to_le32(dma_addr_hi32(sg_dma_address(sg))); + if (address_hi == 0) { + struct SG32ENTRY *pdma_sg = (struct SG32ENTRY *)psge; + + pdma_sg->address = address_lo; + pdma_sg->length = length; + psge += sizeof (struct SG32ENTRY); + arccdbsize += sizeof (struct SG32ENTRY); + } else { + struct SG64ENTRY *pdma_sg = (struct SG64ENTRY *)psge; - pdma_sg->addresshigh = address_hi; - pdma_sg->address = address_lo; - pdma_sg->length = length|cpu_to_le32(IS_SG64_ADDR); - psge += sizeof (struct SG64ENTRY); - arccdbsize += sizeof (struct SG64ENTRY); - } - cdb_sgcount++; - } - arcmsr_cdb->sgcount = (uint8_t)cdb_sgcount; - arcmsr_cdb->DataLength = scsi_bufflen(pcmd); - if ( arccdbsize > 256) - arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_SGL_BSIZE; - } - if (pcmd->sc_data_direction == DMA_TO_DEVICE ) { + pdma_sg->addresshigh = address_hi; + pdma_sg->address = address_lo; + pdma_sg->length = length|cpu_to_le32(IS_SG64_ADDR); + psge += sizeof (struct SG64ENTRY); + arccdbsize += sizeof (struct SG64ENTRY); + } + cdb_sgcount++; + } + arcmsr_cdb->sgcount = (uint8_t)cdb_sgcount; + arcmsr_cdb->DataLength = scsi_bufflen(pcmd); + arcmsr_cdb->msgPages = arccdbsize/0x100 + (arccdbsize % 0x100 ? 1 : 0); + if ( arccdbsize > 256) + arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_SGL_BSIZE; + if (pcmd->cmnd[0]|WRITE_6 || pcmd->cmnd[0]|WRITE_10 || pcmd->cmnd[0]|WRITE_12 ){ arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_WRITE; ccb->ccb_flags |= CCB_FLAG_WRITE; } @@ -953,7 +1099,7 @@ static int arcmsr_build_ccb(struct Adapt static void arcmsr_post_ccb(struct AdapterControlBlock *acb, struct CommandControlBlock *ccb) { - uint32_t cdb_shifted_phyaddr = ccb->cdb_shifted_phyaddr; + uint32_t shifted_cdb_phyaddr = ccb->shifted_cdb_phyaddr; struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb; atomic_inc(&acb->ccboutstandingcount); ccb->startdone = ARCMSR_CCB_START; @@ -963,10 +1109,10 @@ static void arcmsr_post_ccb(struct Adapt struct MessageUnit_A __iomem *reg = acb->pmuA; if (arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE) - writel(cdb_shifted_phyaddr | ARCMSR_CCBPOST_FLAG_SGL_BSIZE, + writel(shifted_cdb_phyaddr | ARCMSR_CCBPOST_FLAG_SGL_BSIZE, ®->inbound_queueport); else { - writel(cdb_shifted_phyaddr, ®->inbound_queueport); + writel(shifted_cdb_phyaddr, ®->inbound_queueport); } } break; @@ -978,16 +1124,16 @@ static void arcmsr_post_ccb(struct Adapt ending_index = ((index + 1) % ARCMSR_MAX_HBB_POSTQUEUE); writel(0, ®->post_qbuffer[ending_index]); if (arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE) { - writel(cdb_shifted_phyaddr | ARCMSR_CCBPOST_FLAG_SGL_BSIZE,\ + writel(shifted_cdb_phyaddr | ARCMSR_CCBPOST_FLAG_SGL_BSIZE,\ ®->post_qbuffer[index]); } else { - writel(cdb_shifted_phyaddr, ®->post_qbuffer[index]); + writel(shifted_cdb_phyaddr, ®->post_qbuffer[index]); } index++; index %= ARCMSR_MAX_HBB_POSTQUEUE;/*if last index number set it to 0 */ reg->postq_index = index; - writel(ARCMSR_DRV2IOP_CDB_POSTED, reg->drv2iop_doorbell_reg); + writel(ARCMSR_DRV2IOP_CDB_POSTED, reg->drv2iop_doorbell); } break; } @@ -1010,7 +1156,7 @@ static void arcmsr_stop_hbb_bgrb(struct { struct MessageUnit_B *reg = acb->pmuB; acb->acb_flags &= ~ACB_F_MSG_START_BGRB; - writel(ARCMSR_MESSAGE_STOP_BGRB, reg->drv2iop_doorbell_reg); + writel(ARCMSR_MESSAGE_STOP_BGRB, reg->drv2iop_doorbell); if (arcmsr_hbb_wait_msgint_ready(acb)) { printk(KERN_NOTICE @@ -1038,23 +1184,14 @@ static void arcmsr_free_ccb_pool(struct { switch (acb->adapter_type) { case ACB_ADAPTER_TYPE_A: { + dma_free_coherent(&acb->pdev->dev, acb->uncache_size, acb->dma_coherent, acb->dma_coherent_handle); iounmap(acb->pmuA); - dma_free_coherent(&acb->pdev->dev, - ARCMSR_MAX_FREECCB_NUM * sizeof (struct CommandControlBlock) + 0x20, - acb->dma_coherent, - acb->dma_coherent_handle); - break; } + break; case ACB_ADAPTER_TYPE_B: { - struct MessageUnit_B *reg = acb->pmuB; - iounmap(reg->drv2iop_doorbell_reg - ARCMSR_DRV2IOP_DOORBELL); - iounmap(reg->ioctl_wbuffer_reg - ARCMSR_IOCTL_WBUFFER); - dma_free_coherent(&acb->pdev->dev, - (ARCMSR_MAX_FREECCB_NUM * sizeof(struct CommandControlBlock) + 0x20 + - sizeof(struct MessageUnit_B)), acb->dma_coherent, acb->dma_coherent_handle); + dma_free_coherent(&acb->pdev->dev, acb->uncache_size, acb->dma_coherent, acb->dma_coherent_handle); } } - } void arcmsr_iop_message_read(struct AdapterControlBlock *acb) @@ -1068,7 +1205,7 @@ void arcmsr_iop_message_read(struct Adap case ACB_ADAPTER_TYPE_B: { struct MessageUnit_B *reg = acb->pmuB; - writel(ARCMSR_DRV2IOP_DATA_READ_OK, reg->drv2iop_doorbell_reg); + writel(ARCMSR_DRV2IOP_DATA_READ_OK, reg->drv2iop_doorbell); } break; } @@ -1093,7 +1230,7 @@ static void arcmsr_iop_message_wrote(str ** push inbound doorbell tell iop, driver data write ok ** and wait reply on next hwinterrupt for next Qbuffer post */ - writel(ARCMSR_DRV2IOP_DATA_WRITE_OK, reg->drv2iop_doorbell_reg); + writel(ARCMSR_DRV2IOP_DATA_WRITE_OK, reg->drv2iop_doorbell); } break; } @@ -1113,7 +1250,7 @@ struct QBUFFER __iomem *arcmsr_get_iop_r case ACB_ADAPTER_TYPE_B: { struct MessageUnit_B *reg = acb->pmuB; - qbuffer = (struct QBUFFER __iomem *)reg->ioctl_rbuffer_reg; + qbuffer = (struct QBUFFER __iomem *)reg->message_rbuffer; } break; } @@ -1134,7 +1271,7 @@ static struct QBUFFER __iomem *arcmsr_ge case ACB_ADAPTER_TYPE_B: { struct MessageUnit_B *reg = acb->pmuB; - pqbuffer = (struct QBUFFER __iomem *)reg->ioctl_wbuffer_reg; + pqbuffer = (struct QBUFFER __iomem *)reg->message_wbuffer; } break; } @@ -1248,14 +1385,36 @@ static void arcmsr_hbb_postqueue_isr(str reg->doneq_index = index; } } - +/* +*************************************************************************** ******* +** Handle a message interrupt +** +** The only message interrupt we expect is in response to a query for the current adapter config. +** We want this in order to compare the drivemap so that we can detect newly-attached drives. +*************************************************************************** ******* +*/ +static void arcmsr_hba_message_isr(struct AdapterControlBlock *acb) +{ + struct MessageUnit_A *reg = acb->pmuA; + /*clear interrupt and message state*/ + writel(ARCMSR_MU_OUTBOUND_MESSAGE0_INT, ®->outbound_intstatus); + schedule_work(&acb->arcmsr_do_message_isr_bh); +} +static void arcmsr_hbb_message_isr(struct AdapterControlBlock *acb) +{ + struct MessageUnit_B *reg = acb->pmuB; + + /*clear interrupt and message state*/ + writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN, reg->iop2drv_doorbell); + schedule_work(&acb->arcmsr_do_message_isr_bh); +} static int arcmsr_handle_hba_isr(struct AdapterControlBlock *acb) { uint32_t outbound_intstatus; struct MessageUnit_A __iomem *reg = acb->pmuA; - outbound_intstatus = readl(®->outbound_intstatus) & \ - acb->outbound_int_enable; + outbound_intstatus = readl(®->outbound_intstatus) & + acb->outbound_int_enable; if (!(outbound_intstatus & ARCMSR_MU_OUTBOUND_HANDLE_INT)) { return 1; } @@ -1266,6 +1425,10 @@ static int arcmsr_handle_hba_isr(struct if (outbound_intstatus & ARCMSR_MU_OUTBOUND_POSTQUEUE_INT) { arcmsr_hba_postqueue_isr(acb); } + if(outbound_intstatus & ARCMSR_MU_OUTBOUND_MESSAGE0_INT) { + /* messenger of "driver to iop commands" */ + arcmsr_hba_message_isr(acb); + } return 0; } @@ -1274,16 +1437,17 @@ static int arcmsr_handle_hbb_isr(struct uint32_t outbound_doorbell; struct MessageUnit_B *reg = acb->pmuB; - outbound_doorbell = readl(reg->iop2drv_doorbell_reg) & \ - acb->outbound_int_enable; + outbound_doorbell = readl(reg->iop2drv_doorbell) & + acb->outbound_int_enable; if (!outbound_doorbell) return 1; - writel(~outbound_doorbell, reg->iop2drv_doorbell_reg); - /*in case the last action of doorbell interrupt clearance is cached, this action can push HW to write down the clear bit*/ - readl(reg->iop2drv_doorbell_reg); - writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell_reg); - if (outbound_doorbell & ARCMSR_IOP2DRV_DATA_WRITE_OK) { + writel(~outbound_doorbell, reg->iop2drv_doorbell); + /*in case the last action of doorbell interrupt clearance is cached, + this action can push HW to write down the clear bit*/ + readl(reg->iop2drv_doorbell); + writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell); + if (outbound_doorbell & ARCMSR_IOP2DRV_DATA_WRITE_OK) { arcmsr_iop2drv_data_wrote_handle(acb); } if (outbound_doorbell & ARCMSR_IOP2DRV_DATA_READ_OK) { @@ -1292,10 +1456,13 @@ static int arcmsr_handle_hbb_isr(struct if (outbound_doorbell & ARCMSR_IOP2DRV_CDB_DONE) { arcmsr_hbb_postqueue_isr(acb); } + if(outbound_doorbell & ARCMSR_IOP2DRV_MESSAGE_CMD_DONE) { + /* messenger of "driver to iop commands" */ + arcmsr_hbb_message_isr(acb); + } return 0; } - static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb) { switch (acb->adapter_type) { @@ -1359,7 +1526,7 @@ void arcmsr_post_ioctldata2iop(struct Ad } } -static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb, \ +static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb, struct scsi_cmnd *cmd) { struct CMD_MESSAGE_FIELD *pcmdmessagefld; @@ -1397,6 +1564,7 @@ static int arcmsr_iop_message_xfer(struc retvalue = ARCMSR_MESSAGE_FAIL; goto message_out; } + ptmpQbuffer = ver_addr; while ((acb->rqbuf_firstindex != acb->rqbuf_lastindex) && (allxfer_len < 1031)) { @@ -1428,7 +1596,11 @@ static int arcmsr_iop_message_xfer(struc } memcpy(pcmdmessagefld->messagedatabuffer, ver_addr, allxfer_len); pcmdmessagefld->cmdmessage.Length = allxfer_len; - pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK; + if(acb->fw_flag == FW_DEADLOCK) { + pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON; + }else{ + pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK; + } kfree(ver_addr); } break; @@ -1443,6 +1615,13 @@ static int arcmsr_iop_message_xfer(struc retvalue = ARCMSR_MESSAGE_FAIL; goto message_out; } + if(acb->fw_flag == FW_DEADLOCK) { + pcmdmessagefld->cmdmessage.ReturnCode = + ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON; + }else{ + pcmdmessagefld->cmdmessage.ReturnCode = + ARCMSR_MESSAGE_RETURNCODE_OK; + } ptmpuserbuffer = ver_addr; user_len = pcmdmessagefld->cmdmessage.Length; memcpy(ptmpuserbuffer, pcmdmessagefld->messagedatabuffer, user_len); @@ -1495,7 +1674,6 @@ static int arcmsr_iop_message_xfer(struc case ARCMSR_MESSAGE_CLEAR_RQBUFFER: { uint8_t *pQbuffer = acb->rqbuffer; - if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) { acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW; arcmsr_iop_message_read(acb); @@ -1504,12 +1682,25 @@ static int arcmsr_iop_message_xfer(struc acb->rqbuf_firstindex = 0; acb->rqbuf_lastindex = 0; memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER); - pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK; + if(acb->fw_flag == FW_DEADLOCK) { + pcmdmessagefld->cmdmessage.ReturnCode = + ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON; + }else{ + pcmdmessagefld->cmdmessage.ReturnCode = + ARCMSR_MESSAGE_RETURNCODE_OK; + } } break; case ARCMSR_MESSAGE_CLEAR_WQBUFFER: { uint8_t *pQbuffer = acb->wqbuffer; + if(acb->fw_flag == FW_DEADLOCK) { + pcmdmessagefld->cmdmessage.ReturnCode = + ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON; + }else{ + pcmdmessagefld->cmdmessage.ReturnCode = + ARCMSR_MESSAGE_RETURNCODE_OK; + } if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) { acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW; @@ -1521,8 +1712,6 @@ static int arcmsr_iop_message_xfer(struc acb->wqbuf_firstindex = 0; acb->wqbuf_lastindex = 0; memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER); - pcmdmessagefld->cmdmessage.ReturnCode = - ARCMSR_MESSAGE_RETURNCODE_OK; } break; @@ -1545,29 +1734,53 @@ static int arcmsr_iop_message_xfer(struc memset(pQbuffer, 0, sizeof(struct QBUFFER)); pQbuffer = acb->wqbuffer; memset(pQbuffer, 0, sizeof(struct QBUFFER)); - pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK; + if(acb->fw_flag == FW_DEADLOCK) { + pcmdmessagefld->cmdmessage.ReturnCode = + ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON; + }else{ + pcmdmessagefld->cmdmessage.ReturnCode = + ARCMSR_MESSAGE_RETURNCODE_OK; + } } break; case ARCMSR_MESSAGE_RETURN_CODE_3F: { - pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_3F; + if(acb->fw_flag == FW_DEADLOCK) { + pcmdmessagefld->cmdmessage.ReturnCode = + ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON; + }else{ + pcmdmessagefld->cmdmessage.ReturnCode = + ARCMSR_MESSAGE_RETURNCODE_3F; } break; - + } case ARCMSR_MESSAGE_SAY_HELLO: { int8_t *hello_string = "Hello! I am ARCMSR"; - + if(acb->fw_flag == FW_DEADLOCK) { + pcmdmessagefld->cmdmessage.ReturnCode = + ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON; + }else{ + pcmdmessagefld->cmdmessage.ReturnCode = + ARCMSR_MESSAGE_RETURNCODE_OK; + } memcpy(pcmdmessagefld->messagedatabuffer, hello_string , (int16_t)strlen(hello_string)); - pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK; } break; case ARCMSR_MESSAGE_SAY_GOODBYE: + if(acb->fw_flag == FW_DEADLOCK) { + pcmdmessagefld->cmdmessage.ReturnCode = + ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON; + } arcmsr_iop_parking(acb); break; case ARCMSR_MESSAGE_FLUSH_ADAPTER_CACHE: + if(acb->fw_flag == FW_DEADLOCK) { + pcmdmessagefld->cmdmessage.ReturnCode = + ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON; + } arcmsr_flush_adapter_cache(acb); break; @@ -1584,11 +1797,16 @@ static struct CommandControlBlock *arcms { struct list_head *head = &acb->ccb_free_list; struct CommandControlBlock *ccb = NULL; - + unsigned long flags; + spin_lock_irqsave(&acb->ccblist_lock, flags); if (!list_empty(head)) { ccb = list_entry(head->next, struct CommandControlBlock, list); - list_del(head->next); + list_del_init(&ccb->list); + }else{ + spin_unlock_irqrestore(&acb->ccblist_lock, flags); + return 0; } + spin_unlock_irqrestore(&acb->ccblist_lock, flags); return ccb; } @@ -1650,38 +1868,25 @@ static int arcmsr_queue_command(struct s struct CommandControlBlock *ccb; int target = cmd->device->id; int lun = cmd->device->lun; - + uint8_t scsicmd = cmd->cmnd[0]; cmd->scsi_done = done; cmd->host_scribble = NULL; cmd->result = 0; - if (acb->acb_flags & ACB_F_BUS_RESET) { - printk(KERN_NOTICE "arcmsr%d: bus reset" - " and return busy \n" - , acb->host->host_no); - return SCSI_MLQUEUE_HOST_BUSY; + + if((scsicmd == SYNCHRONIZE_CACHE) ||(scsicmd == SEND_DIAGNOSTIC)) { + if(acb->devstate[target][lun] == ARECA_RAID_GONE) { + cmd->result = (DID_NO_CONNECT << 16); + } + cmd->scsi_done(cmd); + return 0; } + if (target == 16) { /* virtual device for iop message transfer */ arcmsr_handle_virtual_command(acb, cmd); return 0; } - if (acb->devstate[target][lun] == ARECA_RAID_GONE) { - uint8_t block_cmd; - block_cmd = cmd->cmnd[0] & 0x0f; - if (block_cmd == 0x08 || block_cmd == 0x0a) { - printk(KERN_NOTICE - "arcmsr%d: block 'read/write'" - "command with gone raid volume" - " Cmd = %2x, TargetId = %d, Lun = %d \n" - , acb->host->host_no - , cmd->cmnd[0] - , target, lun); - cmd->result = (DID_NO_CONNECT << 16); - cmd->scsi_done(cmd); - return 0; - } - } if (atomic_read(&acb->ccboutstandingcount) >= ARCMSR_MAX_OUTSTANDING_CMD) return SCSI_MLQUEUE_HOST_BUSY; @@ -1698,23 +1903,24 @@ static int arcmsr_queue_command(struct s return 0; } -static void arcmsr_get_hba_config(struct AdapterControlBlock *acb) -{ +static bool arcmsr_get_hba_config(struct AdapterControlBlock *acb){ struct MessageUnit_A __iomem *reg = acb->pmuA; char *acb_firm_model = acb->firm_model; char *acb_firm_version = acb->firm_version; + char *acb_device_map = acb->device_map; char __iomem *iop_firm_model = (char __iomem *)(®->message_rwbuffer[15]); char __iomem *iop_firm_version = (char __iomem *)(®->message_rwbuffer[17]); + char __iomem *iop_device_map = (char __iomem *) (®->message_rwbuffer[21]); int count; writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, ®->inbound_msgaddr0); if (arcmsr_hba_wait_msgint_ready(acb)) { printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \ miscellaneous data' timeout \n", acb->host->host_no); + return false; } - count = 8; - while (count) { + while (count){ *acb_firm_model = readb(iop_firm_model); acb_firm_model++; iop_firm_model++; @@ -1722,95 +1928,131 @@ static void arcmsr_get_hba_config(struct } count = 16; - while (count) { + while (count){ *acb_firm_version = readb(iop_firm_version); acb_firm_version++; iop_firm_version++; count--; } - printk(KERN_INFO "ARECA RAID ADAPTER%d: FIRMWARE VERSION %s \n" - , acb->host->host_no - , acb->firm_version); - + count=16; + while(count){ + *acb_device_map=readb(iop_device_map); + acb_device_map++; + iop_device_map++; + count--; + } + printk(KERN_NOTICE "Areca RAID Controller%d: F/W %s & Model %s\n", + acb->host->host_no, + acb->firm_version, + acb->firm_model); + acb->signature = readl(®->message_rwbuffer[0]); acb->firm_request_len = readl(®->message_rwbuffer[1]); acb->firm_numbers_queue = readl(®->message_rwbuffer[2]); acb->firm_sdram_size = readl(®->message_rwbuffer[3]); acb->firm_hd_channels = readl(®->message_rwbuffer[4]); + acb->firm_cfg_version = readl(®->message_rwbuffer[25]); /*firm_cfg_version,25,100-103*/ + return true; } - -static void arcmsr_get_hbb_config(struct AdapterControlBlock *acb) +static bool arcmsr_get_hbb_config(struct AdapterControlBlock *acb) { struct MessageUnit_B *reg = acb->pmuB; - uint32_t __iomem *lrwbuffer = reg->msgcode_rwbuffer_reg; + struct pci_dev *pdev = acb->pdev; + void *dma_coherent; + dma_addr_t dma_coherent_handle; char *acb_firm_model = acb->firm_model; char *acb_firm_version = acb->firm_version; - char __iomem *iop_firm_model = (char __iomem *)(&lrwbuffer[15]); + char *acb_device_map = acb->device_map; + char __iomem *iop_firm_model; /*firm_model,15,60-67*/ - char __iomem *iop_firm_version = (char __iomem *)(&lrwbuffer[17]); + char __iomem *iop_firm_version; /*firm_version,17,68-83*/ + char __iomem *iop_device_map; + /*firm_version,21,84-99*/ int count; + dma_coherent = dma_alloc_coherent(&pdev->dev, sizeof(struct MessageUnit_B), &dma_coherent_handle, GFP_KERNEL); + if (!dma_coherent){ + printk("arcmsr%d: dma_alloc_coherent got error for hbb mu\n", acb->host->host_no); + return false; + } + acb->dma_coherent_handle_hbb_mu = dma_coherent_handle; + reg = (struct MessageUnit_B *)dma_coherent; + acb->pmuB = reg; + reg->drv2iop_doorbell= (uint32_t __iomem *)((unsigned long)acb->mem_base0 + ARCMSR_DRV2IOP_DOORBELL); + reg->drv2iop_doorbell_mask = (uint32_t __iomem *)((unsigned long)acb->mem_base0 + ARCMSR_DRV2IOP_DOORBELL_MASK); + reg->iop2drv_doorbell = (uint32_t __iomem *)((unsigned long)acb->mem_base0 + ARCMSR_IOP2DRV_DOORBELL); + reg->iop2drv_doorbell_mask = (uint32_t __iomem *)((unsigned long)acb->mem_base0 + ARCMSR_IOP2DRV_DOORBELL_MASK); + reg->message_wbuffer = (uint32_t __iomem *)((unsigned long)acb->mem_base1 + ARCMSR_MESSAGE_WBUFFER); + reg->message_rbuffer = (uint32_t __iomem *)((unsigned long)acb->mem_base1 + ARCMSR_MESSAGE_RBUFFER); + reg->message_rwbuffer = (uint32_t __iomem *)((unsigned long)acb->mem_base1 + ARCMSR_MESSAGE_RWBUFFER); + iop_firm_model = (char __iomem *)(®->message_rwbuffer[15]); /*firm_model,15,60-67*/ + iop_firm_version = (char __iomem *)(®->message_rwbuffer[17]); /*firm_version,17,68-83*/ + iop_device_map = (char __iomem *)(®->message_rwbuffer[21]); /*firm_version,21,84-99*/ - writel(ARCMSR_MESSAGE_GET_CONFIG, reg->drv2iop_doorbell_reg); - if (arcmsr_hbb_wait_msgint_ready(acb)) { + writel(ARCMSR_MESSAGE_GET_CONFIG, reg->drv2iop_doorbell); + if (arcmsr_hbb_wait_msgint_ready(acb)){ printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \ miscellaneous data' timeout \n", acb->host->host_no); + return false; } - count = 8; - while (count) - { + while (count){ *acb_firm_model = readb(iop_firm_model); acb_firm_model++; iop_firm_model++; count--; } - count = 16; - while (count) - { + while (count){ *acb_firm_version = readb(iop_firm_version); acb_firm_version++; iop_firm_version++; count--; } - printk(KERN_INFO "ARECA RAID ADAPTER%d: FIRMWARE VERSION %s \n", - acb->host->host_no, - acb->firm_version); - - lrwbuffer++; - acb->firm_request_len = readl(lrwbuffer++); + count=16; + while(count){ + *acb_device_map=readb(iop_device_map); + acb_device_map++; + iop_device_map++; + count--; + } + + printk(KERN_NOTICE "Areca RAID Controller%d: F/W %s & Model %s\n", + acb->host->host_no, + acb->firm_version, + acb->firm_model); + + acb->signature = readl(®->message_rwbuffer[1]); + /*firm_signature,1,00-03*/ + acb->firm_request_len=readl(®->message_rwbuffer[2]); /*firm_request_len,1,04-07*/ - acb->firm_numbers_queue = readl(lrwbuffer++); + acb->firm_numbers_queue=readl(®->message_rwbuffer[3]); /*firm_numbers_queue,2,08-11*/ - acb->firm_sdram_size = readl(lrwbuffer++); + acb->firm_sdram_size=readl(®->message_rwbuffer[4]); /*firm_sdram_size,3,12-15*/ - acb->firm_hd_channels = readl(lrwbuffer); + acb->firm_hd_channels=readl(®->message_rwbuffer[5]); /*firm_ide_channels,4,16-19*/ + acb->firm_cfg_version=readl(®->message_rwbuffer[25]); /*firm_cfg_version,25,100-103*/ + /*firm_ide_channels,4,16-19*/ + return true; } - -static void arcmsr_get_firmware_spec(struct AdapterControlBlock *acb) +static bool arcmsr_get_firmware_spec(struct AdapterControlBlock *acb) { - switch (acb->adapter_type) { - case ACB_ADAPTER_TYPE_A: { - arcmsr_get_hba_config(acb); - } - break; - - case ACB_ADAPTER_TYPE_B: { - arcmsr_get_hbb_config(acb); - } - break; - } + if(acb->adapter_type == ACB_ADAPTER_TYPE_A) + return arcmsr_get_hba_config(acb); + else + return arcmsr_get_hbb_config(acb); } -static void arcmsr_polling_hba_ccbdone(struct AdapterControlBlock *acb, +static int arcmsr_polling_hba_ccbdone(struct AdapterControlBlock *acb, struct CommandControlBlock *poll_ccb) { struct MessageUnit_A __iomem *reg = acb->pmuA; struct CommandControlBlock *ccb; + struct ARCMSR_CDB *arcmsr_cdb; uint32_t flag_ccb, outbound_intstatus, poll_ccb_done = 0, poll_count = 0; + int rtn; polling_hba_ccb_retry: poll_count++; @@ -1818,16 +2060,19 @@ static void arcmsr_polling_hba_ccbdone(s writel(outbound_intstatus, ®->outbound_intstatus);/*clear interrupt*/ while (1) { if ((flag_ccb = readl(®->outbound_queueport)) == 0xFFFFFFFF) { - if (poll_ccb_done) + if (poll_ccb_done){ + rtn = SUCCESS; break; - else { - msleep(25); - if (poll_count > 100) + }else { + if (poll_count > 100){ + rtn = FAILED; break; + } goto polling_hba_ccb_retry; } } - ccb = (struct CommandControlBlock *)(acb->vir2phy_offset + (flag_ccb << 5)); + arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset + (flag_ccb << 5)); + ccb = container_of(arcmsr_cdb, struct CommandControlBlock, arcmsr_cdb); poll_ccb_done = (ccb == poll_ccb) ? 1:0; if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) { if ((ccb->startdone == ARCMSR_CCB_ABORTED) || (ccb == poll_ccb)) { @@ -1838,8 +2083,7 @@ static void arcmsr_polling_hba_ccbdone(s , ccb->pcmd->device->lun , ccb); ccb->pcmd->result = DID_ABORT << 16; - arcmsr_ccb_complete(ccb, 1); - poll_ccb_done = 1; + arcmsr_ccb_complete(ccb); continue; } printk(KERN_NOTICE "arcmsr%d: polling get an illegal ccb" @@ -1849,87 +2093,97 @@ static void arcmsr_polling_hba_ccbdone(s , ccb , atomic_read(&acb->ccboutstandingcount)); continue; + }else{ + arcmsr_report_ccb_state(acb, ccb, flag_ccb); } - arcmsr_report_ccb_state(acb, ccb, flag_ccb); } + return rtn; } -static void arcmsr_polling_hbb_ccbdone(struct AdapterControlBlock *acb, +static int arcmsr_polling_hbb_ccbdone(struct AdapterControlBlock *acb, struct CommandControlBlock *poll_ccb) { - struct MessageUnit_B *reg = acb->pmuB; - struct CommandControlBlock *ccb; - uint32_t flag_ccb, poll_ccb_done = 0, poll_count = 0; - int index; - + struct MessageUnit_B *reg = acb->pmuB; + struct ARCMSR_CDB *arcmsr_cdb; + struct CommandControlBlock *ccb; + uint32_t flag_ccb, poll_ccb_done = 0, poll_count = 0; + int index, rtn; + polling_hbb_ccb_retry: - poll_count++; - /* clear doorbell interrupt */ - writel(ARCMSR_DOORBELL_INT_CLEAR_PATTERN, reg->iop2drv_doorbell_reg); - while (1) { - index = reg->doneq_index; - if ((flag_ccb = readl(®->done_qbuffer[index])) == 0) { - if (poll_ccb_done) + poll_count++; + /* clear doorbell interrupt */ + writel(ARCMSR_DOORBELL_INT_CLEAR_PATTERN, reg->iop2drv_doorbell); + while(1){ + index = reg->doneq_index; + if ((flag_ccb = readl(®->done_qbuffer[index])) == 0) { + if (poll_ccb_done){ + rtn = SUCCESS; + break; + }else { + msleep(25); + if (poll_count > 100){ + rtn = FAILED; break; - else { - msleep(25); - if (poll_count > 100) - break; - goto polling_hbb_ccb_retry; } + goto polling_hbb_ccb_retry; } - writel(0, ®->done_qbuffer[index]); - index++; - /*if last index number set it to 0 */ - index %= ARCMSR_MAX_HBB_POSTQUEUE; - reg->doneq_index = index; - /* check ifcommand done with no error*/ - ccb = (struct CommandControlBlock *)\ - (acb->vir2phy_offset + (flag_ccb << 5));/*frame must be 32 bytes aligned*/ - poll_ccb_done = (ccb == poll_ccb) ? 1:0; - if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) { - if ((ccb->startdone == ARCMSR_CCB_ABORTED) || (ccb == poll_ccb)) { - printk(KERN_NOTICE "arcmsr%d: \ - scsi id = %d lun = %d ccb = '0x%p' poll command abort successfully \n" - ,acb->host->host_no - ,ccb->pcmd->device->id - ,ccb->pcmd->device->lun - ,ccb); - ccb->pcmd->result = DID_ABORT << 16; - arcmsr_ccb_complete(ccb, 1); - continue; - } - printk(KERN_NOTICE "arcmsr%d: polling get an illegal ccb" - " command done ccb = '0x%p'" - "ccboutstandingcount = %d \n" - , acb->host->host_no - , ccb - , atomic_read(&acb->ccboutstandingcount)); + } + writel(0, ®->done_qbuffer[index]); + index++; + /*if last index number set it to 0 */ + index %= ARCMSR_MAX_HBB_POSTQUEUE; + reg->doneq_index = index; + /* check if command done with no error*/ + arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset + (flag_ccb << 5)); + ccb = container_of(arcmsr_cdb, struct CommandControlBlock, arcmsr_cdb); + poll_ccb_done = (ccb == poll_ccb) ? 1:0; + if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) { + if ((ccb->startdone == ARCMSR_CCB_ABORTED) || (ccb == poll_ccb)) { + printk(KERN_NOTICE "arcmsr%d: scsi id = %d lun = %d ccb = '0x%p'" + " poll command abort successfully \n" + ,acb->host->host_no + ,ccb->pcmd->device->id + ,ccb->pcmd->device->lun + ,ccb); + ccb->pcmd->result = DID_ABORT << 16; + arcmsr_ccb_complete(ccb); continue; } + printk(KERN_NOTICE "arcmsr%d: polling get an illegal ccb" + " command done ccb = '0x%p'" + "ccboutstandingcount = %d \n" + , acb->host->host_no + , ccb + , atomic_read(&acb->ccboutstandingcount)); + continue; + }else{ arcmsr_report_ccb_state(acb, ccb, flag_ccb); - } /*drain reply FIFO*/ + } + } /*drain reply FIFO*/ + return rtn; } -static void arcmsr_polling_ccbdone(struct AdapterControlBlock *acb, +static int arcmsr_polling_ccbdone(struct AdapterControlBlock *acb, struct CommandControlBlock *poll_ccb) { + int rtn = 0; switch (acb->adapter_type) { case ACB_ADAPTER_TYPE_A: { - arcmsr_polling_hba_ccbdone(acb,poll_ccb); + rtn = arcmsr_polling_hba_ccbdone(acb,poll_ccb); } break; case ACB_ADAPTER_TYPE_B: { - arcmsr_polling_hbb_ccbdone(acb,poll_ccb); + rtn = arcmsr_polling_hbb_ccbdone(acb,poll_ccb); } } + return rtn; } static int arcmsr_iop_confirm(struct AdapterControlBlock *acb) { - uint32_t cdb_phyaddr, ccb_phyaddr_hi32; + uint32_t cdb_phyaddr, cdb_phyaddr_hi32; dma_addr_t dma_coherent_handle; /* ******************************************************************** @@ -1939,7 +2193,7 @@ static int arcmsr_iop_confirm(struct Ada */ dma_coherent_handle = acb->dma_coherent_handle; cdb_phyaddr = (uint32_t)(dma_coherent_handle); - ccb_phyaddr_hi32 = (uint32_t)((cdb_phyaddr >> 16) >> 16); + cdb_phyaddr_hi32 = (uint32_t)((cdb_phyaddr >> 16) >> 16); /* *********************************************************************** ** if adapter type B, set window of "post command Q" @@ -1948,13 +2202,13 @@ static int arcmsr_iop_confirm(struct Ada switch (acb->adapter_type) { case ACB_ADAPTER_TYPE_A: { - if (ccb_phyaddr_hi32 != 0) { + if (cdb_phyaddr_hi32 != 0) { struct MessageUnit_A __iomem *reg = acb->pmuA; uint32_t intmask_org; intmask_org = arcmsr_disable_outbound_ints(acb); writel(ARCMSR_SIGNATURE_SET_CONFIG, \ ®->message_rwbuffer[0]); - writel(ccb_phyaddr_hi32, ®->message_rwbuffer[1]); + writel(cdb_phyaddr_hi32, ®->message_rwbuffer[1]); writel(ARCMSR_INBOUND_MESG0_SET_CONFIG, \ ®->inbound_msgaddr0); if (arcmsr_hba_wait_msgint_ready(acb)) { @@ -1977,19 +2231,18 @@ static int arcmsr_iop_confirm(struct Ada intmask_org = arcmsr_disable_outbound_ints(acb); reg->postq_index = 0; reg->doneq_index = 0; - writel(ARCMSR_MESSAGE_SET_POST_WINDOW, reg->drv2iop_doorbell_reg); + writel(ARCMSR_MESSAGE_SET_POST_WINDOW, reg->drv2iop_doorbell); if (arcmsr_hbb_wait_msgint_ready(acb)) { printk(KERN_NOTICE "arcmsr%d:can not set diver mode\n", \ acb->host->host_no); return 1; } - post_queue_phyaddr = cdb_phyaddr + ARCMSR_MAX_FREECCB_NUM * \ - sizeof(struct CommandControlBlock) + offsetof(struct MessageUnit_B, post_qbuffer) ; - rwbuffer = reg->msgcode_rwbuffer_reg; + post_queue_phyaddr = acb->dma_coherent_handle_hbb_mu; + rwbuffer = reg->message_rwbuffer; /* driver "set config" signature */ writel(ARCMSR_SIGNATURE_SET_CONFIG, rwbuffer++); /* normal should be zero */ - writel(ccb_phyaddr_hi32, rwbuffer++); + writel(cdb_phyaddr_hi32, rwbuffer++); /* postQ size (256 + 8)*4 */ writel(post_queue_phyaddr, rwbuffer++); /* doneQ size (256 + 8)*4 */ @@ -1997,19 +2250,13 @@ static int arcmsr_iop_confirm(struct Ada /* ccb maxQ size must be --> [(256 + 8)*4]*/ writel(1056, rwbuffer); - writel(ARCMSR_MESSAGE_SET_CONFIG, reg->drv2iop_doorbell_reg); + writel(ARCMSR_MESSAGE_SET_CONFIG, reg->drv2iop_doorbell); if (arcmsr_hbb_wait_msgint_ready(acb)) { printk(KERN_NOTICE "arcmsr%d: 'set command Q window' \ timeout \n",acb->host->host_no); return 1; } - - writel(ARCMSR_MESSAGE_START_DRIVER_MODE, reg->drv2iop_doorbell_reg); - if (arcmsr_hbb_wait_msgint_ready(acb)) { - printk(KERN_NOTICE "arcmsr%d: 'can not set diver mode \n"\ - ,acb->host->host_no); - return 1; - } + arcmsr_hbb_enable_driver_mode(acb); arcmsr_enable_outbound_ints(acb, intmask_org); } break; @@ -2034,9 +2281,64 @@ static void arcmsr_wait_firmware_ready(s case ACB_ADAPTER_TYPE_B: { struct MessageUnit_B *reg = acb->pmuB; do { - firmware_state = readl(reg->iop2drv_doorbell_reg); + firmware_state = readl(reg->iop2drv_doorbell); } while ((firmware_state & ARCMSR_MESSAGE_FIRMWARE_OK) == 0); - writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell_reg); + writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell); + } + break; + } +} + +static void arcmsr_request_hba_device_map(struct AdapterControlBlock *acb) +{ + struct MessageUnit_A __iomem *reg = acb->pmuA; + if(unlikely(atomic_read(&acb->rq_map_token) == 0) || ((acb->acb_flags & ACB_F_BUS_RESET) != 0 ) || ((acb->acb_flags & ACB_F_ABORT) != 0 )){ + return; + }else{ + acb->fw_flag = FW_NORMAL; + if(atomic_read(&acb->ante_token_value) == atomic_read(&acb->rq_map_token)){ + atomic_set(&acb->rq_map_token,16); + } + atomic_set(&acb->ante_token_value, atomic_read(&acb->rq_map_token)); + if(atomic_dec_and_test(&acb->rq_map_token)) + return; + writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, ®->inbound_msgaddr0); + mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6*HZ)); + } + return; +} + +static void arcmsr_request_hbb_device_map(struct AdapterControlBlock *acb) +{ + struct MessageUnit_B __iomem *reg = acb->pmuB; + + if(unlikely(atomic_read(&acb->rq_map_token) == 0) || ((acb->acb_flags & ACB_F_BUS_RESET) != 0 ) || ((acb->acb_flags & ACB_F_ABORT) != 0 )){ + return; + }else{ + acb->fw_flag = FW_NORMAL; + if(atomic_read(&acb->ante_token_value) == atomic_read(&acb->rq_map_token)){ + atomic_set(&acb->rq_map_token,16); + } + atomic_set(&acb->ante_token_value, atomic_read(&acb->rq_map_token)); + if(atomic_dec_and_test(&acb->rq_map_token)) + return; + writel(ARCMSR_MESSAGE_GET_CONFIG, reg->drv2iop_doorbell); + mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6*HZ)); + } + return; +} + +static void arcmsr_request_device_map(unsigned long pacb) +{ + struct AdapterControlBlock *acb = (struct AdapterControlBlock *)pacb; + + switch (acb->adapter_type) { + case ACB_ADAPTER_TYPE_A: { + arcmsr_request_hba_device_map(acb); + } + break; + case ACB_ADAPTER_TYPE_B: { + arcmsr_request_hbb_device_map(acb); } break; } @@ -2057,7 +2359,7 @@ static void arcmsr_start_hbb_bgrb(struct { struct MessageUnit_B *reg = acb->pmuB; acb->acb_flags |= ACB_F_MSG_START_BGRB; - writel(ARCMSR_MESSAGE_START_BGRB, reg->drv2iop_doorbell_reg); + writel(ARCMSR_MESSAGE_START_BGRB, reg->drv2iop_doorbell); if (arcmsr_hbb_wait_msgint_ready(acb)) { printk(KERN_NOTICE "arcmsr%d: wait 'start adapter background \ rebulid' timeout \n",acb->host->host_no); @@ -2093,8 +2395,8 @@ static void arcmsr_clear_doorbell_queue_ case ACB_ADAPTER_TYPE_B: { struct MessageUnit_B *reg = acb->pmuB; /*clear interrupt and message state*/ - writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN, reg->iop2drv_doorbell_reg); - writel(ARCMSR_DRV2IOP_DATA_READ_OK, reg->drv2iop_doorbell_reg); + writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN, reg->iop2drv_doorbell); + writel(ARCMSR_DRV2IOP_DATA_READ_OK, reg->drv2iop_doorbell); /* let IOP know data has been read */ } break; @@ -2109,7 +2411,7 @@ static void arcmsr_enable_eoi_mode(struc case ACB_ADAPTER_TYPE_B: { struct MessageUnit_B *reg = acb->pmuB; - writel(ARCMSR_MESSAGE_ACTIVE_EOI_MODE, reg->drv2iop_doorbell_reg); + writel(ARCMSR_MESSAGE_ACTIVE_EOI_MODE, reg->drv2iop_doorbell); if(arcmsr_hbb_wait_msgint_ready(acb)) { printk(KERN_NOTICE "ARCMSR IOP enables EOI_MODE TIMEOUT"); return; @@ -2120,15 +2422,62 @@ static void arcmsr_enable_eoi_mode(struc return; } +static void arcmsr_hardware_reset(struct AdapterControlBlock *acb) +{ + uint8_t value[64]; + int i; + struct MessageUnit_A __iomem *reg = acb->pmuA; + + /* backup pci config data */ + printk(KERN_ERR "arcmsr%d: executing hw bus reset .....\n", acb->host->host_no); + for (i=0; i<64; i++) { + pci_read_config_byte(acb->pdev, i, &value[i]); + } + /* hardware reset signal */ + if((acb->dev_id == 0x1680)){ + writel(ARCMSR_ARC1680_BUS_RESET, ®->reserved1[0]); + }else{ + pci_write_config_byte(acb->pdev, 0x84, 0x20); + } + msleep(1000); + /* write back pci config data */ + for (i=0;i<64;i++) { + pci_write_config_byte(acb->pdev, i, value[i]); + } + msleep(1000); + return; +} +/* +*************************************************************************** * +*************************************************************************** * +*/ +int arcmsr_sleep_for_bus_reset(struct scsi_cmnd *cmd) +{ + struct Scsi_Host *shost = NULL; + int i, isleep; + + shost = cmd->device->host; + isleep = sleeptime / 10; + if (isleep > 0) { + for (i = 0; i < isleep; i ++) { + msleep(10000); + } + } + + isleep = sleeptime % 10; + if (isleep > 0) { + msleep(isleep*1000); + } + return 0; +} static void arcmsr_iop_init(struct AdapterControlBlock *acb) { uint32_t intmask_org; - /* disable all outbound interrupt */ - intmask_org = arcmsr_disable_outbound_ints(acb); + /* disable all outbound interrupt */ + intmask_org = arcmsr_disable_outbound_ints(acb); arcmsr_wait_firmware_ready(acb); arcmsr_iop_confirm(acb); - arcmsr_get_firmware_spec(acb); /*start background rebuild*/ arcmsr_start_adapter_bgrb(acb); /* empty doorbell Qbuffer if door bell ringed */ @@ -2139,69 +2488,156 @@ static void arcmsr_iop_init(struct Adapt acb->acb_flags |= ACB_F_IOP_INITED; } -static void arcmsr_iop_reset(struct AdapterControlBlock *acb) +static uint8_t arcmsr_iop_reset(struct AdapterControlBlock *acb) { struct CommandControlBlock *ccb; uint32_t intmask_org; + uint8_t rtnval = 0x00; int i = 0; - if (atomic_read(&acb->ccboutstandingcount) != 0) { - /* talk to iop 331 outstanding command aborted */ - arcmsr_abort_allcmd(acb); - - /* wait for 3 sec for all command aborted*/ - ssleep(3); - /* disable all outbound interrupt */ intmask_org = arcmsr_disable_outbound_ints(acb); + /* talk to iop 331 outstanding command aborted */ + rtnval = arcmsr_abort_allcmd(acb); /* clear all outbound posted Q */ arcmsr_done4abort_postqueue(acb); for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) { ccb = acb->pccb_pool[i]; if (ccb->startdone == ARCMSR_CCB_START) { - ccb->startdone = ARCMSR_CCB_ABORTED; - arcmsr_ccb_complete(ccb, 1); + arcmsr_ccb_complete(ccb); } } + atomic_set(&acb->ccboutstandingcount, 0); /* enable all outbound interrupt */ arcmsr_enable_outbound_ints(acb, intmask_org); + return rtnval; } + return rtnval; } static int arcmsr_bus_reset(struct scsi_cmnd *cmd) { struct AdapterControlBlock *acb = (struct AdapterControlBlock *)cmd->device->host->hostdata; - int i; - + uint32_t intmask_org, outbound_doorbell; + int retry_count = 0; + int rtn = FAILED; + + acb = (struct AdapterControlBlock *) cmd->device->host->hostdata; + printk(KERN_ERR "arcmsr: executing eh bus reset .....num_resets = %d, + num_aborts = %d \n", acb->num_resets, acb->num_aborts); acb->num_resets++; - acb->acb_flags |= ACB_F_BUS_RESET; - for (i = 0; i < 400; i++) { - if (!atomic_read(&acb->ccboutstandingcount)) + + switch(acb->adapter_type){ + case ACB_ADAPTER_TYPE_A:{ + if(acb->acb_flags & ACB_F_BUS_RESET){ + long timeout; + timeout = wait_event_timeout(wait_q, + (acb->acb_flags & ACB_F_BUS_RESET) == 0, 220*HZ); + if(timeout){ + return SUCCESS; + } + } + acb->acb_flags |= ACB_F_BUS_RESET; + if(arcmsr_iop_reset(acb)){ + struct MessageUnit_A __iomem *reg; + reg = acb->pmuA; + arcmsr_hardware_reset(acb); + acb->acb_flags &= ~ACB_F_IOP_INITED; + sleep_again: + arcmsr_sleep_for_bus_reset(cmd); + if((readl(®->outbound_msgaddr1) & ARCMSR_OUTBOUND_MESG1_FIRMWARE_OK) == 0){ + printk(KERN_ERR "arcmsr%d: waiting for hw bus reset return, + retry=%d \n", acb->host->host_no, retry_count); + if(retry_count > retrycount){ + acb->fw_flag = FW_DEADLOCK; + printk(KERN_ERR "arcmsr%d: waiting for hw bus reset return, + RETRY TERMINATED!! \n", acb->host->host_no); + return FAILED; + } + retry_count++; + goto sleep_again; + } + acb->acb_flags |= ACB_F_IOP_INITED; + /* disable all outbound interrupt */ + intmask_org = arcmsr_disable_outbound_ints(acb); + arcmsr_get_firmware_spec(acb); + arcmsr_start_adapter_bgrb(acb); + /* clear Qbuffer if door bell ringed */ + outbound_doorbell = readl(®->outbound_doorbell); + writel(outbound_doorbell, ®->outbound_doorbell); /*clear interrupt */ + writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, ®->inbound_doorbell); + /* enable outbound Post Queue,outbound doorbell Interrupt */ + arcmsr_enable_outbound_ints(acb, intmask_org); + atomic_set(&acb->rq_map_token, 16); + atomic_set(&acb->ante_token_value, 16); + acb->fw_flag = FW_NORMAL; + init_timer(&acb->eternal_timer); + acb->eternal_timer.expires = jiffies + msecs_to_jiffies(6*HZ); + acb->eternal_timer.data = (unsigned long) acb; + acb->eternal_timer.function = &arcmsr_request_device_map; + add_timer(&acb->eternal_timer); + acb->acb_flags &= ~ACB_F_BUS_RESET; + rtn = SUCCESS; + printk(KERN_ERR "arcmsr: scsi eh bus reset succeeds\n"); + }else{ + acb->acb_flags &= ~ACB_F_BUS_RESET; + if(atomic_read(&acb->rq_map_token) == 0){ + atomic_set(&acb->rq_map_token, 16); + atomic_set(&acb->ante_token_value, 16); + acb->fw_flag = FW_NORMAL; + init_timer(&acb->eternal_timer); + acb->eternal_timer.expires = jiffies + msecs_to_jiffies(6*HZ); + acb->eternal_timer.data = (unsigned long) acb; + acb->eternal_timer.function = &arcmsr_request_device_map; + add_timer(&acb->eternal_timer); + }else{ + atomic_set(&acb->rq_map_token, 16); + atomic_set(&acb->ante_token_value, 16); + acb->fw_flag = FW_NORMAL; + mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6*HZ)); + } + rtn = SUCCESS; + } break; - arcmsr_interrupt(acb);/* FIXME: need spinlock */ - msleep(25); + } + case ACB_ADAPTER_TYPE_B:{ + acb->acb_flags |= ACB_F_BUS_RESET; + if(arcmsr_iop_reset(acb)){ + acb->acb_flags &= ~ACB_F_BUS_RESET; + rtn = FAILED; + }else{ + acb->acb_flags &= ~ACB_F_BUS_RESET; + if(atomic_read(&acb->rq_map_token) == 0){ + atomic_set(&acb->rq_map_token, 16); + atomic_set(&acb->ante_token_value, 16); + acb->fw_flag = FW_NORMAL; + init_timer(&acb->eternal_timer); + acb->eternal_timer.expires = jiffies + msecs_to_jiffies(6*HZ); + acb->eternal_timer.data = (unsigned long) acb; + acb->eternal_timer.function = &arcmsr_request_device_map; + add_timer(&acb->eternal_timer); + }else{ + atomic_set(&acb->rq_map_token, 16); + atomic_set(&acb->ante_token_value, 16); + acb->fw_flag = FW_NORMAL; + mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6*HZ)); + } + rtn = SUCCESS; + } + } } - arcmsr_iop_reset(acb); - acb->acb_flags &= ~ACB_F_BUS_RESET; - return SUCCESS; + return rtn; } -static void arcmsr_abort_one_cmd(struct AdapterControlBlock *acb, +static int arcmsr_abort_one_cmd(struct AdapterControlBlock *acb, struct CommandControlBlock *ccb) { - u32 intmask; - - ccb->startdone = ARCMSR_CCB_ABORTED; - - /* - ** Wait for 3 sec for all command done. - */ - ssleep(3); - - intmask = arcmsr_disable_outbound_ints(acb); - arcmsr_polling_ccbdone(acb, ccb); - arcmsr_enable_outbound_ints(acb, intmask); + int rtn; + spin_lock_irq(&acb->eh_lock); + rtn = arcmsr_polling_ccbdone(acb, ccb); + spin_unlock_irq(&acb->eh_lock); + return rtn; } static int arcmsr_abort(struct scsi_cmnd *cmd) @@ -2209,10 +2645,12 @@ static int arcmsr_abort(struct scsi_cmnd struct AdapterControlBlock *acb = (struct AdapterControlBlock *)cmd->device->host->hostdata; int i = 0; + int rtn = FAILED; printk(KERN_NOTICE "arcmsr%d: abort device command of scsi id = %d lun = %d \n", acb->host->host_no, cmd->device->id, cmd->device->lun); + acb->acb_flags |= ACB_F_ABORT; acb->num_aborts++; /* ************************************************ @@ -2221,17 +2659,20 @@ static int arcmsr_abort(struct scsi_cmnd ************************************************ */ if (!atomic_read(&acb->ccboutstandingcount)) - return SUCCESS; + return rtn; for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) { + printk("%s: loop %d\n", __FUNCTION__, i); struct CommandControlBlock *ccb = acb->pccb_pool[i]; if (ccb->startdone == ARCMSR_CCB_START && ccb->pcmd == cmd) { - arcmsr_abort_one_cmd(acb, ccb); + ccb->startdone = ARCMSR_CCB_ABORTED; + rtn = arcmsr_abort_one_cmd(acb, ccb); break; } } - - return SUCCESS; + acb->acb_flags &= ~ACB_F_ABORT; + printk("%s: leaving\n", __FUNCTION__); + return rtn; } static const char *arcmsr_info(struct Scsi_Host *host) @@ -2336,7 +2777,7 @@ static void arcmsr_pci_ers_need_reset_fo ccb = acb->pccb_pool[i]; if (ccb->startdone == ARCMSR_CCB_START) { ccb->startdone = ARCMSR_CCB_ABORTED; - arcmsr_ccb_complete(ccb, 1); + arcmsr_ccb_complete(ccb); } } /* enable all outbound interrupt */ -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
