| /* |
| * vvvvvvvvvvvvvvvvvvvvvvv Original vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv |
| * Copyright (C) 1992 Eric Youngdale |
| * Simulate a host adapter with 2 disks attached. Do a lot of checking |
| * to make sure that we are not getting blocks mixed up, and PANIC if |
| * anything out of the ordinary is seen. |
| * ^^^^^^^^^^^^^^^^^^^^^^^ Original ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ |
| * |
| * This version is more generic, simulating a variable number of disk |
| * (or disk like devices) sharing a common amount of RAM. To be more |
| * realistic, the simulated devices have the transport attributes of |
| * SAS disks. |
| * |
| * |
| * For documentation see http://sg.danny.cz/sg/sdebug26.html |
| * |
| * D. Gilbert (dpg) work for Magneto-Optical device test [20010421] |
| * dpg: work for devfs large number of disks [20010809] |
| * forked for lk 2.5 series [20011216, 20020101] |
| * use vmalloc() more inquiry+mode_sense [20020302] |
| * add timers for delayed responses [20020721] |
| * Patrick Mansfield <patmans@us.ibm.com> max_luns+scsi_level [20021031] |
| * Mike Anderson <andmike@us.ibm.com> sysfs work [20021118] |
| * dpg: change style of boot options to "scsi_debug.num_tgts=2" and |
| * module options to "modprobe scsi_debug num_tgts=2" [20021221] |
| */ |
| |
| #include <linux/module.h> |
| |
| #include <linux/kernel.h> |
| #include <linux/errno.h> |
| #include <linux/timer.h> |
| #include <linux/slab.h> |
| #include <linux/types.h> |
| #include <linux/string.h> |
| #include <linux/genhd.h> |
| #include <linux/fs.h> |
| #include <linux/init.h> |
| #include <linux/proc_fs.h> |
| #include <linux/vmalloc.h> |
| #include <linux/moduleparam.h> |
| #include <linux/scatterlist.h> |
| #include <linux/blkdev.h> |
| #include <linux/crc-t10dif.h> |
| |
| #include <net/checksum.h> |
| |
| #include <asm/unaligned.h> |
| |
| #include <scsi/scsi.h> |
| #include <scsi/scsi_cmnd.h> |
| #include <scsi/scsi_device.h> |
| #include <scsi/scsi_host.h> |
| #include <scsi/scsicam.h> |
| #include <scsi/scsi_eh.h> |
| #include <scsi/scsi_dbg.h> |
| |
| #include "sd.h" |
| #include "scsi_logging.h" |
| |
| #define SCSI_DEBUG_VERSION "1.82" |
| static const char * scsi_debug_version_date = "20100324"; |
| |
| /* Additional Sense Code (ASC) */ |
| #define NO_ADDITIONAL_SENSE 0x0 |
| #define LOGICAL_UNIT_NOT_READY 0x4 |
| #define UNRECOVERED_READ_ERR 0x11 |
| #define PARAMETER_LIST_LENGTH_ERR 0x1a |
| #define INVALID_OPCODE 0x20 |
| #define ADDR_OUT_OF_RANGE 0x21 |
| #define INVALID_COMMAND_OPCODE 0x20 |
| #define INVALID_FIELD_IN_CDB 0x24 |
| #define INVALID_FIELD_IN_PARAM_LIST 0x26 |
| #define POWERON_RESET 0x29 |
| #define SAVING_PARAMS_UNSUP 0x39 |
| #define TRANSPORT_PROBLEM 0x4b |
| #define THRESHOLD_EXCEEDED 0x5d |
| #define LOW_POWER_COND_ON 0x5e |
| |
| /* Additional Sense Code Qualifier (ASCQ) */ |
| #define ACK_NAK_TO 0x3 |
| |
| #define SDEBUG_TAGGED_QUEUING 0 /* 0 | MSG_SIMPLE_TAG | MSG_ORDERED_TAG */ |
| |
| /* Default values for driver parameters */ |
| #define DEF_NUM_HOST 1 |
| #define DEF_NUM_TGTS 1 |
| #define DEF_MAX_LUNS 1 |
| /* With these defaults, this driver will make 1 host with 1 target |
| * (id 0) containing 1 logical unit (lun 0). That is 1 device. |
| */ |
| #define DEF_ATO 1 |
| #define DEF_DELAY 1 |
| #define DEF_DEV_SIZE_MB 8 |
| #define DEF_DIF 0 |
| #define DEF_DIX 0 |
| #define DEF_D_SENSE 0 |
| #define DEF_EVERY_NTH 0 |
| #define DEF_FAKE_RW 0 |
| #define DEF_GUARD 0 |
| #define DEF_LBPU 0 |
| #define DEF_LBPWS 0 |
| #define DEF_LBPWS10 0 |
| #define DEF_LOWEST_ALIGNED 0 |
| #define DEF_NO_LUN_0 0 |
| #define DEF_NUM_PARTS 0 |
| #define DEF_OPTS 0 |
| #define DEF_OPT_BLKS 64 |
| #define DEF_PHYSBLK_EXP 0 |
| #define DEF_PTYPE 0 |
| #define DEF_SCSI_LEVEL 5 /* INQUIRY, byte2 [5->SPC-3] */ |
| #define DEF_SECTOR_SIZE 512 |
| #define DEF_UNMAP_ALIGNMENT 0 |
| #define DEF_UNMAP_GRANULARITY 1 |
| #define DEF_UNMAP_MAX_BLOCKS 0xFFFFFFFF |
| #define DEF_UNMAP_MAX_DESC 256 |
| #define DEF_VIRTUAL_GB 0 |
| #define DEF_VPD_USE_HOSTNO 1 |
| #define DEF_WRITESAME_LENGTH 0xFFFF |
| |
| /* bit mask values for scsi_debug_opts */ |
| #define SCSI_DEBUG_OPT_NOISE 1 |
| #define SCSI_DEBUG_OPT_MEDIUM_ERR 2 |
| #define SCSI_DEBUG_OPT_TIMEOUT 4 |
| #define SCSI_DEBUG_OPT_RECOVERED_ERR 8 |
| #define SCSI_DEBUG_OPT_TRANSPORT_ERR 16 |
| #define SCSI_DEBUG_OPT_DIF_ERR 32 |
| #define SCSI_DEBUG_OPT_DIX_ERR 64 |
| /* When "every_nth" > 0 then modulo "every_nth" commands: |
| * - a no response is simulated if SCSI_DEBUG_OPT_TIMEOUT is set |
| * - a RECOVERED_ERROR is simulated on successful read and write |
| * commands if SCSI_DEBUG_OPT_RECOVERED_ERR is set. |
| * - a TRANSPORT_ERROR is simulated on successful read and write |
| * commands if SCSI_DEBUG_OPT_TRANSPORT_ERR is set. |
| * |
| * When "every_nth" < 0 then after "- every_nth" commands: |
| * - a no response is simulated if SCSI_DEBUG_OPT_TIMEOUT is set |
| * - a RECOVERED_ERROR is simulated on successful read and write |
| * commands if SCSI_DEBUG_OPT_RECOVERED_ERR is set. |
| * - a TRANSPORT_ERROR is simulated on successful read and write |
| * commands if SCSI_DEBUG_OPT_TRANSPORT_ERR is set. |
| * This will continue until some other action occurs (e.g. the user |
| * writing a new value (other than -1 or 1) to every_nth via sysfs). |
| */ |
| |
| /* when 1==SCSI_DEBUG_OPT_MEDIUM_ERR, a medium error is simulated at this |
| * sector on read commands: */ |
| #define OPT_MEDIUM_ERR_ADDR 0x1234 /* that's sector 4660 in decimal */ |
| #define OPT_MEDIUM_ERR_NUM 10 /* number of consecutive medium errs */ |
| |
| /* If REPORT LUNS has luns >= 256 it can choose "flat space" (value 1) |
| * or "peripheral device" addressing (value 0) */ |
| #define SAM2_LUN_ADDRESS_METHOD 0 |
| #define SAM2_WLUN_REPORT_LUNS 0xc101 |
| |
| /* Can queue up to this number of commands. Typically commands that |
| * that have a non-zero delay are queued. */ |
| #define SCSI_DEBUG_CANQUEUE 255 |
| |
| static int scsi_debug_add_host = DEF_NUM_HOST; |
| static int scsi_debug_ato = DEF_ATO; |
| static int scsi_debug_delay = DEF_DELAY; |
| static int scsi_debug_dev_size_mb = DEF_DEV_SIZE_MB; |
| static int scsi_debug_dif = DEF_DIF; |
| static int scsi_debug_dix = DEF_DIX; |
| static int scsi_debug_dsense = DEF_D_SENSE; |
| static int scsi_debug_every_nth = DEF_EVERY_NTH; |
| static int scsi_debug_fake_rw = DEF_FAKE_RW; |
| static int scsi_debug_guard = DEF_GUARD; |
| static int scsi_debug_lowest_aligned = DEF_LOWEST_ALIGNED; |
| static int scsi_debug_max_luns = DEF_MAX_LUNS; |
| static int scsi_debug_max_queue = SCSI_DEBUG_CANQUEUE; |
| static int scsi_debug_no_lun_0 = DEF_NO_LUN_0; |
| static int scsi_debug_no_uld = 0; |
| static int scsi_debug_num_parts = DEF_NUM_PARTS; |
| static int scsi_debug_num_tgts = DEF_NUM_TGTS; /* targets per host */ |
| static int scsi_debug_opt_blks = DEF_OPT_BLKS; |
| static int scsi_debug_opts = DEF_OPTS; |
| static int scsi_debug_physblk_exp = DEF_PHYSBLK_EXP; |
| static int scsi_debug_ptype = DEF_PTYPE; /* SCSI peripheral type (0==disk) */ |
| static int scsi_debug_scsi_level = DEF_SCSI_LEVEL; |
| static int scsi_debug_sector_size = DEF_SECTOR_SIZE; |
| static int scsi_debug_virtual_gb = DEF_VIRTUAL_GB; |
| static int scsi_debug_vpd_use_hostno = DEF_VPD_USE_HOSTNO; |
| static unsigned int scsi_debug_lbpu = DEF_LBPU; |
| static unsigned int scsi_debug_lbpws = DEF_LBPWS; |
| static unsigned int scsi_debug_lbpws10 = DEF_LBPWS10; |
| static unsigned int scsi_debug_unmap_alignment = DEF_UNMAP_ALIGNMENT; |
| static unsigned int scsi_debug_unmap_granularity = DEF_UNMAP_GRANULARITY; |
| static unsigned int scsi_debug_unmap_max_blocks = DEF_UNMAP_MAX_BLOCKS; |
| static unsigned int scsi_debug_unmap_max_desc = DEF_UNMAP_MAX_DESC; |
| static unsigned int scsi_debug_write_same_length = DEF_WRITESAME_LENGTH; |
| |
| static int scsi_debug_cmnd_count = 0; |
| |
| #define DEV_READONLY(TGT) (0) |
| #define DEV_REMOVEABLE(TGT) (0) |
| |
| static unsigned int sdebug_store_sectors; |
| static sector_t sdebug_capacity; /* in sectors */ |
| |
| /* old BIOS stuff, kernel may get rid of them but some mode sense pages |
| may still need them */ |
| static int sdebug_heads; /* heads per disk */ |
| static int sdebug_cylinders_per; /* cylinders per surface */ |
| static int sdebug_sectors_per; /* sectors per cylinder */ |
| |
| #define SDEBUG_MAX_PARTS 4 |
| |
| #define SDEBUG_SENSE_LEN 32 |
| |
| #define SCSI_DEBUG_MAX_CMD_LEN 32 |
| |
| static unsigned int scsi_debug_lbp(void) |
| { |
| return scsi_debug_lbpu | scsi_debug_lbpws | scsi_debug_lbpws10; |
| } |
| |
| struct sdebug_dev_info { |
| struct list_head dev_list; |
| unsigned char sense_buff[SDEBUG_SENSE_LEN]; /* weak nexus */ |
| unsigned int channel; |
| unsigned int target; |
| unsigned int lun; |
| struct sdebug_host_info *sdbg_host; |
| unsigned int wlun; |
| char reset; |
| char stopped; |
| char used; |
| }; |
| |
| struct sdebug_host_info { |
| struct list_head host_list; |
| struct Scsi_Host *shost; |
| struct device dev; |
| struct list_head dev_info_list; |
| }; |
| |
| #define to_sdebug_host(d) \ |
| container_of(d, struct sdebug_host_info, dev) |
| |
| static LIST_HEAD(sdebug_host_list); |
| static DEFINE_SPINLOCK(sdebug_host_list_lock); |
| |
| typedef void (* done_funct_t) (struct scsi_cmnd *); |
| |
| struct sdebug_queued_cmd { |
| int in_use; |
| struct timer_list cmnd_timer; |
| done_funct_t done_funct; |
| struct scsi_cmnd * a_cmnd; |
| int scsi_result; |
| }; |
| static struct sdebug_queued_cmd queued_arr[SCSI_DEBUG_CANQUEUE]; |
| |
| static unsigned char * fake_storep; /* ramdisk storage */ |
| static unsigned char *dif_storep; /* protection info */ |
| static void *map_storep; /* provisioning map */ |
| |
| static unsigned long map_size; |
| static int num_aborts = 0; |
| static int num_dev_resets = 0; |
| static int num_bus_resets = 0; |
| static int num_host_resets = 0; |
| static int dix_writes; |
| static int dix_reads; |
| static int dif_errors; |
| |
| static DEFINE_SPINLOCK(queued_arr_lock); |
| static DEFINE_RWLOCK(atomic_rw); |
| |
| static char sdebug_proc_name[] = "scsi_debug"; |
| |
| static struct bus_type pseudo_lld_bus; |
| |
| static inline sector_t dif_offset(sector_t sector) |
| { |
| return sector << 3; |
| } |
| |
| static struct device_driver sdebug_driverfs_driver = { |
| .name = sdebug_proc_name, |
| .bus = &pseudo_lld_bus, |
| }; |
| |
| static const int check_condition_result = |
| (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; |
| |
| static const int illegal_condition_result = |
| (DRIVER_SENSE << 24) | (DID_ABORT << 16) | SAM_STAT_CHECK_CONDITION; |
| |
| static unsigned char ctrl_m_pg[] = {0xa, 10, 2, 0, 0, 0, 0, 0, |
| 0, 0, 0x2, 0x4b}; |
| static unsigned char iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0, |
| 0, 0, 0x0, 0x0}; |
| |
| static int sdebug_add_adapter(void); |
| static void sdebug_remove_adapter(void); |
| |
| static void sdebug_max_tgts_luns(void) |
| { |
| struct sdebug_host_info *sdbg_host; |
| struct Scsi_Host *hpnt; |
| |
| spin_lock(&sdebug_host_list_lock); |
| list_for_each_entry(sdbg_host, &sdebug_host_list, host_list) { |
| hpnt = sdbg_host->shost; |
| if ((hpnt->this_id >= 0) && |
| (scsi_debug_num_tgts > hpnt->this_id)) |
| hpnt->max_id = scsi_debug_num_tgts + 1; |
| else |
| hpnt->max_id = scsi_debug_num_tgts; |
| /* scsi_debug_max_luns; */ |
| hpnt->max_lun = SAM2_WLUN_REPORT_LUNS; |
| } |
| spin_unlock(&sdebug_host_list_lock); |
| } |
| |
| static void mk_sense_buffer(struct sdebug_dev_info *devip, int key, |
| int asc, int asq) |
| { |
| unsigned char *sbuff; |
| |
| sbuff = devip->sense_buff; |
| memset(sbuff, 0, SDEBUG_SENSE_LEN); |
| |
| scsi_build_sense_buffer(scsi_debug_dsense, sbuff, key, asc, asq); |
| |
| if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| printk(KERN_INFO "scsi_debug: [sense_key,asc,ascq]: " |
| "[0x%x,0x%x,0x%x]\n", key, asc, asq); |
| } |
| |
| static void get_data_transfer_info(unsigned char *cmd, |
| unsigned long long *lba, unsigned int *num, |
| u32 *ei_lba) |
| { |
| *ei_lba = 0; |
| |
| switch (*cmd) { |
| case VARIABLE_LENGTH_CMD: |
| *lba = (u64)cmd[19] | (u64)cmd[18] << 8 | |
| (u64)cmd[17] << 16 | (u64)cmd[16] << 24 | |
| (u64)cmd[15] << 32 | (u64)cmd[14] << 40 | |
| (u64)cmd[13] << 48 | (u64)cmd[12] << 56; |
| |
| *ei_lba = (u32)cmd[23] | (u32)cmd[22] << 8 | |
| (u32)cmd[21] << 16 | (u32)cmd[20] << 24; |
| |
| *num = (u32)cmd[31] | (u32)cmd[30] << 8 | (u32)cmd[29] << 16 | |
| (u32)cmd[28] << 24; |
| break; |
| |
| case WRITE_SAME_16: |
| case WRITE_16: |
| case READ_16: |
| *lba = (u64)cmd[9] | (u64)cmd[8] << 8 | |
| (u64)cmd[7] << 16 | (u64)cmd[6] << 24 | |
| (u64)cmd[5] << 32 | (u64)cmd[4] << 40 | |
| (u64)cmd[3] << 48 | (u64)cmd[2] << 56; |
| |
| *num = (u32)cmd[13] | (u32)cmd[12] << 8 | (u32)cmd[11] << 16 | |
| (u32)cmd[10] << 24; |
| break; |
| case WRITE_12: |
| case READ_12: |
| *lba = (u32)cmd[5] | (u32)cmd[4] << 8 | (u32)cmd[3] << 16 | |
| (u32)cmd[2] << 24; |
| |
| *num = (u32)cmd[9] | (u32)cmd[8] << 8 | (u32)cmd[7] << 16 | |
| (u32)cmd[6] << 24; |
| break; |
| case WRITE_SAME: |
| case WRITE_10: |
| case READ_10: |
| case XDWRITEREAD_10: |
| *lba = (u32)cmd[5] | (u32)cmd[4] << 8 | (u32)cmd[3] << 16 | |
| (u32)cmd[2] << 24; |
| |
| *num = (u32)cmd[8] | (u32)cmd[7] << 8; |
| break; |
| case WRITE_6: |
| case READ_6: |
| *lba = (u32)cmd[3] | (u32)cmd[2] << 8 | |
| (u32)(cmd[1] & 0x1f) << 16; |
| *num = (0 == cmd[4]) ? 256 : cmd[4]; |
| break; |
| default: |
| break; |
| } |
| } |
| |
| static int scsi_debug_ioctl(struct scsi_device *dev, int cmd, void __user *arg) |
| { |
| if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) { |
| printk(KERN_INFO "scsi_debug: ioctl: cmd=0x%x\n", cmd); |
| } |
| return -EINVAL; |
| /* return -ENOTTY; // correct return but upsets fdisk */ |
| } |
| |
| static int check_readiness(struct scsi_cmnd * SCpnt, int reset_only, |
| struct sdebug_dev_info * devip) |
| { |
| if (devip->reset) { |
| if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| printk(KERN_INFO "scsi_debug: Reporting Unit " |
| "attention: power on reset\n"); |
| devip->reset = 0; |
| mk_sense_buffer(devip, UNIT_ATTENTION, POWERON_RESET, 0); |
| return check_condition_result; |
| } |
| if ((0 == reset_only) && devip->stopped) { |
| if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| printk(KERN_INFO "scsi_debug: Reporting Not " |
| "ready: initializing command required\n"); |
| mk_sense_buffer(devip, NOT_READY, LOGICAL_UNIT_NOT_READY, |
| 0x2); |
| return check_condition_result; |
| } |
| return 0; |
| } |
| |
| /* Returns 0 if ok else (DID_ERROR << 16). Sets scp->resid . */ |
| static int fill_from_dev_buffer(struct scsi_cmnd *scp, unsigned char *arr, |
| int arr_len) |
| { |
| int act_len; |
| struct scsi_data_buffer *sdb = scsi_in(scp); |
| |
| if (!sdb->length) |
| return 0; |
| if (!(scsi_bidi_cmnd(scp) || scp->sc_data_direction == DMA_FROM_DEVICE)) |
| return (DID_ERROR << 16); |
| |
| act_len = sg_copy_from_buffer(sdb->table.sgl, sdb->table.nents, |
| arr, arr_len); |
| if (sdb->resid) |
| sdb->resid -= act_len; |
| else |
| sdb->resid = scsi_bufflen(scp) - act_len; |
| |
| return 0; |
| } |
| |
| /* Returns number of bytes fetched into 'arr' or -1 if error. */ |
| static int fetch_to_dev_buffer(struct scsi_cmnd *scp, unsigned char *arr, |
| int arr_len) |
| { |
| if (!scsi_bufflen(scp)) |
| return 0; |
| if (!(scsi_bidi_cmnd(scp) || scp->sc_data_direction == DMA_TO_DEVICE)) |
| return -1; |
| |
| return scsi_sg_copy_to_buffer(scp, arr, arr_len); |
| } |
| |
| |
| static const char * inq_vendor_id = "Linux "; |
| static const char * inq_product_id = "scsi_debug "; |
| static const char * inq_product_rev = "0004"; |
| |
| static int inquiry_evpd_83(unsigned char * arr, int port_group_id, |
| int target_dev_id, int dev_id_num, |
| const char * dev_id_str, |
| int dev_id_str_len) |
| { |
| int num, port_a; |
| char b[32]; |
| |
| port_a = target_dev_id + 1; |
| /* T10 vendor identifier field format (faked) */ |
| arr[0] = 0x2; /* ASCII */ |
| arr[1] = 0x1; |
| arr[2] = 0x0; |
| memcpy(&arr[4], inq_vendor_id, 8); |
| memcpy(&arr[12], inq_product_id, 16); |
| memcpy(&arr[28], dev_id_str, dev_id_str_len); |
| num = 8 + 16 + dev_id_str_len; |
| arr[3] = num; |
| num += 4; |
| if (dev_id_num >= 0) { |
| /* NAA-5, Logical unit identifier (binary) */ |
| arr[num++] = 0x1; /* binary (not necessarily sas) */ |
| arr[num++] = 0x3; /* PIV=0, lu, naa */ |
| arr[num++] = 0x0; |
| arr[num++] = 0x8; |
| arr[num++] = 0x53; /* naa-5 ieee company id=0x333333 (fake) */ |
| arr[num++] = 0x33; |
| arr[num++] = 0x33; |
| arr[num++] = 0x30; |
| arr[num++] = (dev_id_num >> 24); |
| arr[num++] = (dev_id_num >> 16) & 0xff; |
| arr[num++] = (dev_id_num >> 8) & 0xff; |
| arr[num++] = dev_id_num & 0xff; |
| /* Target relative port number */ |
| arr[num++] = 0x61; /* proto=sas, binary */ |
| arr[num++] = 0x94; /* PIV=1, target port, rel port */ |
| arr[num++] = 0x0; /* reserved */ |
| arr[num++] = 0x4; /* length */ |
| arr[num++] = 0x0; /* reserved */ |
| arr[num++] = 0x0; /* reserved */ |
| arr[num++] = 0x0; |
| arr[num++] = 0x1; /* relative port A */ |
| } |
| /* NAA-5, Target port identifier */ |
| arr[num++] = 0x61; /* proto=sas, binary */ |
| arr[num++] = 0x93; /* piv=1, target port, naa */ |
| arr[num++] = 0x0; |
| arr[num++] = 0x8; |
| arr[num++] = 0x52; /* naa-5, company id=0x222222 (fake) */ |
| arr[num++] = 0x22; |
| arr[num++] = 0x22; |
| arr[num++] = 0x20; |
| arr[num++] = (port_a >> 24); |
| arr[num++] = (port_a >> 16) & 0xff; |
| arr[num++] = (port_a >> 8) & 0xff; |
| arr[num++] = port_a & 0xff; |
| /* NAA-5, Target port group identifier */ |
| arr[num++] = 0x61; /* proto=sas, binary */ |
| arr[num++] = 0x95; /* piv=1, target port group id */ |
| arr[num++] = 0x0; |
| arr[num++] = 0x4; |
| arr[num++] = 0; |
| arr[num++] = 0; |
| arr[num++] = (port_group_id >> 8) & 0xff; |
| arr[num++] = port_group_id & 0xff; |
| /* NAA-5, Target device identifier */ |
| arr[num++] = 0x61; /* proto=sas, binary */ |
| arr[num++] = 0xa3; /* piv=1, target device, naa */ |
| arr[num++] = 0x0; |
| arr[num++] = 0x8; |
| arr[num++] = 0x52; /* naa-5, company id=0x222222 (fake) */ |
| arr[num++] = 0x22; |
| arr[num++] = 0x22; |
| arr[num++] = 0x20; |
| arr[num++] = (target_dev_id >> 24); |
| arr[num++] = (target_dev_id >> 16) & 0xff; |
| arr[num++] = (target_dev_id >> 8) & 0xff; |
| arr[num++] = target_dev_id & 0xff; |
| /* SCSI name string: Target device identifier */ |
| arr[num++] = 0x63; /* proto=sas, UTF-8 */ |
| arr[num++] = 0xa8; /* piv=1, target device, SCSI name string */ |
| arr[num++] = 0x0; |
| arr[num++] = 24; |
| memcpy(arr + num, "naa.52222220", 12); |
| num += 12; |
| snprintf(b, sizeof(b), "%08X", target_dev_id); |
| memcpy(arr + num, b, 8); |
| num += 8; |
| memset(arr + num, 0, 4); |
| num += 4; |
| return num; |
| } |
| |
| |
| static unsigned char vpd84_data[] = { |
| /* from 4th byte */ 0x22,0x22,0x22,0x0,0xbb,0x0, |
| 0x22,0x22,0x22,0x0,0xbb,0x1, |
| 0x22,0x22,0x22,0x0,0xbb,0x2, |
| }; |
| |
| static int inquiry_evpd_84(unsigned char * arr) |
| { |
| memcpy(arr, vpd84_data, sizeof(vpd84_data)); |
| return sizeof(vpd84_data); |
| } |
| |
| static int inquiry_evpd_85(unsigned char * arr) |
| { |
| int num = 0; |
| const char * na1 = "https://www.kernel.org/config"; |
| const char * na2 = "http://www.kernel.org/log"; |
| int plen, olen; |
| |
| arr[num++] = 0x1; /* lu, storage config */ |
| arr[num++] = 0x0; /* reserved */ |
| arr[num++] = 0x0; |
| olen = strlen(na1); |
| plen = olen + 1; |
| if (plen % 4) |
| plen = ((plen / 4) + 1) * 4; |
| arr[num++] = plen; /* length, null termianted, padded */ |
| memcpy(arr + num, na1, olen); |
| memset(arr + num + olen, 0, plen - olen); |
| num += plen; |
| |
| arr[num++] = 0x4; /* lu, logging */ |
| arr[num++] = 0x0; /* reserved */ |
| arr[num++] = 0x0; |
| olen = strlen(na2); |
| plen = olen + 1; |
| if (plen % 4) |
| plen = ((plen / 4) + 1) * 4; |
| arr[num++] = plen; /* length, null terminated, padded */ |
| memcpy(arr + num, na2, olen); |
| memset(arr + num + olen, 0, plen - olen); |
| num += plen; |
| |
| return num; |
| } |
| |
| /* SCSI ports VPD page */ |
| static int inquiry_evpd_88(unsigned char * arr, int target_dev_id) |
| { |
| int num = 0; |
| int port_a, port_b; |
| |
| port_a = target_dev_id + 1; |
| port_b = port_a + 1; |
| arr[num++] = 0x0; /* reserved */ |
| arr[num++] = 0x0; /* reserved */ |
| arr[num++] = 0x0; |
| arr[num++] = 0x1; /* relative port 1 (primary) */ |
| memset(arr + num, 0, 6); |
| num += 6; |
| arr[num++] = 0x0; |
| arr[num++] = 12; /* length tp descriptor */ |
| /* naa-5 target port identifier (A) */ |
| arr[num++] = 0x61; /* proto=sas, binary */ |
| arr[num++] = 0x93; /* PIV=1, target port, NAA */ |
| arr[num++] = 0x0; /* reserved */ |
| arr[num++] = 0x8; /* length */ |
| arr[num++] = 0x52; /* NAA-5, company_id=0x222222 (fake) */ |
| arr[num++] = 0x22; |
| arr[num++] = 0x22; |
| arr[num++] = 0x20; |
| arr[num++] = (port_a >> 24); |
| arr[num++] = (port_a >> 16) & 0xff; |
| arr[num++] = (port_a >> 8) & 0xff; |
| arr[num++] = port_a & 0xff; |
| |
| arr[num++] = 0x0; /* reserved */ |
| arr[num++] = 0x0; /* reserved */ |
| arr[num++] = 0x0; |
| arr[num++] = 0x2; /* relative port 2 (secondary) */ |
| memset(arr + num, 0, 6); |
| num += 6; |
| arr[num++] = 0x0; |
| arr[num++] = 12; /* length tp descriptor */ |
| /* naa-5 target port identifier (B) */ |
| arr[num++] = 0x61; /* proto=sas, binary */ |
| arr[num++] = 0x93; /* PIV=1, target port, NAA */ |
| arr[num++] = 0x0; /* reserved */ |
| arr[num++] = 0x8; /* length */ |
| arr[num++] = 0x52; /* NAA-5, company_id=0x222222 (fake) */ |
| arr[num++] = 0x22; |
| arr[num++] = 0x22; |
| arr[num++] = 0x20; |
| arr[num++] = (port_b >> 24); |
| arr[num++] = (port_b >> 16) & 0xff; |
| arr[num++] = (port_b >> 8) & 0xff; |
| arr[num++] = port_b & 0xff; |
| |
| return num; |
| } |
| |
| |
| static unsigned char vpd89_data[] = { |
| /* from 4th byte */ 0,0,0,0, |
| 'l','i','n','u','x',' ',' ',' ', |
| 'S','A','T',' ','s','c','s','i','_','d','e','b','u','g',' ',' ', |
| '1','2','3','4', |
| 0x34,0,0,0,1,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0, |
| 0xec,0,0,0, |
| 0x5a,0xc,0xff,0x3f,0x37,0xc8,0x10,0,0,0,0,0,0x3f,0,0,0, |
| 0,0,0,0,0x58,0x58,0x58,0x58,0x58,0x58,0x58,0x58,0x20,0x20,0x20,0x20, |
| 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0,0,0,0x40,0x4,0,0x2e,0x33, |
| 0x38,0x31,0x20,0x20,0x20,0x20,0x54,0x53,0x38,0x33,0x30,0x30,0x33,0x31, |
| 0x53,0x41, |
| 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20, |
| 0x20,0x20, |
| 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20, |
| 0x10,0x80, |
| 0,0,0,0x2f,0,0,0,0x2,0,0x2,0x7,0,0xff,0xff,0x1,0, |
| 0x3f,0,0xc1,0xff,0x3e,0,0x10,0x1,0xb0,0xf8,0x50,0x9,0,0,0x7,0, |
| 0x3,0,0x78,0,0x78,0,0xf0,0,0x78,0,0,0,0,0,0,0, |
| 0,0,0,0,0,0,0,0,0x2,0,0,0,0,0,0,0, |
| 0x7e,0,0x1b,0,0x6b,0x34,0x1,0x7d,0x3,0x40,0x69,0x34,0x1,0x3c,0x3,0x40, |
| 0x7f,0x40,0,0,0,0,0xfe,0xfe,0,0,0,0,0,0xfe,0,0, |
| 0,0,0,0,0,0,0,0,0xb0,0xf8,0x50,0x9,0,0,0,0, |
| 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 0x1,0,0xb0,0xf8,0x50,0x9,0xb0,0xf8,0x50,0x9,0x20,0x20,0x2,0,0xb6,0x42, |
| 0,0x80,0x8a,0,0x6,0x3c,0xa,0x3c,0xff,0xff,0xc6,0x7,0,0x1,0,0x8, |
| 0xf0,0xf,0,0x10,0x2,0,0x30,0,0,0,0,0,0,0,0x6,0xfe, |
| 0,0,0x2,0,0x50,0,0x8a,0,0x4f,0x95,0,0,0x21,0,0xb,0, |
| 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0xa5,0x51, |
| }; |
| |
| static int inquiry_evpd_89(unsigned char * arr) |
| { |
| memcpy(arr, vpd89_data, sizeof(vpd89_data)); |
| return sizeof(vpd89_data); |
| } |
| |
| |
| /* Block limits VPD page (SBC-3) */ |
| static unsigned char vpdb0_data[] = { |
| /* from 4th byte */ 0,0,0,4, 0,0,0x4,0, 0,0,0,64, |
| 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| }; |
| |
| static int inquiry_evpd_b0(unsigned char * arr) |
| { |
| unsigned int gran; |
| |
| memcpy(arr, vpdb0_data, sizeof(vpdb0_data)); |
| |
| /* Optimal transfer length granularity */ |
| gran = 1 << scsi_debug_physblk_exp; |
| arr[2] = (gran >> 8) & 0xff; |
| arr[3] = gran & 0xff; |
| |
| /* Maximum Transfer Length */ |
| if (sdebug_store_sectors > 0x400) { |
| arr[4] = (sdebug_store_sectors >> 24) & 0xff; |
| arr[5] = (sdebug_store_sectors >> 16) & 0xff; |
| arr[6] = (sdebug_store_sectors >> 8) & 0xff; |
| arr[7] = sdebug_store_sectors & 0xff; |
| } |
| |
| /* Optimal Transfer Length */ |
| put_unaligned_be32(scsi_debug_opt_blks, &arr[8]); |
| |
| if (scsi_debug_lbpu) { |
| /* Maximum Unmap LBA Count */ |
| put_unaligned_be32(scsi_debug_unmap_max_blocks, &arr[16]); |
| |
| /* Maximum Unmap Block Descriptor Count */ |
| put_unaligned_be32(scsi_debug_unmap_max_desc, &arr[20]); |
| } |
| |
| /* Unmap Granularity Alignment */ |
| if (scsi_debug_unmap_alignment) { |
| put_unaligned_be32(scsi_debug_unmap_alignment, &arr[28]); |
| arr[28] |= 0x80; /* UGAVALID */ |
| } |
| |
| /* Optimal Unmap Granularity */ |
| put_unaligned_be32(scsi_debug_unmap_granularity, &arr[24]); |
| |
| /* Maximum WRITE SAME Length */ |
| put_unaligned_be64(scsi_debug_write_same_length, &arr[32]); |
| |
| return 0x3c; /* Mandatory page length for Logical Block Provisioning */ |
| |
| return sizeof(vpdb0_data); |
| } |
| |
| /* Block device characteristics VPD page (SBC-3) */ |
| static int inquiry_evpd_b1(unsigned char *arr) |
| { |
| memset(arr, 0, 0x3c); |
| arr[0] = 0; |
| arr[1] = 1; /* non rotating medium (e.g. solid state) */ |
| arr[2] = 0; |
| arr[3] = 5; /* less than 1.8" */ |
| |
| return 0x3c; |
| } |
| |
| /* Thin provisioning VPD page (SBC-3) */ |
| static int inquiry_evpd_b2(unsigned char *arr) |
| { |
| memset(arr, 0, 0x8); |
| arr[0] = 0; /* threshold exponent */ |
| |
| if (scsi_debug_lbpu) |
| arr[1] = 1 << 7; |
| |
| if (scsi_debug_lbpws) |
| arr[1] |= 1 << 6; |
| |
| if (scsi_debug_lbpws10) |
| arr[1] |= 1 << 5; |
| |
| return 0x8; |
| } |
| |
| #define SDEBUG_LONG_INQ_SZ 96 |
| #define SDEBUG_MAX_INQ_ARR_SZ 584 |
| |
| static int resp_inquiry(struct scsi_cmnd * scp, int target, |
| struct sdebug_dev_info * devip) |
| { |
| unsigned char pq_pdt; |
| unsigned char * arr; |
| unsigned char *cmd = (unsigned char *)scp->cmnd; |
| int alloc_len, n, ret; |
| |
| alloc_len = (cmd[3] << 8) + cmd[4]; |
| arr = kzalloc(SDEBUG_MAX_INQ_ARR_SZ, GFP_ATOMIC); |
| if (! arr) |
| return DID_REQUEUE << 16; |
| if (devip->wlun) |
| pq_pdt = 0x1e; /* present, wlun */ |
| else if (scsi_debug_no_lun_0 && (0 == devip->lun)) |
| pq_pdt = 0x7f; /* not present, no device type */ |
| else |
| pq_pdt = (scsi_debug_ptype & 0x1f); |
| arr[0] = pq_pdt; |
| if (0x2 & cmd[1]) { /* CMDDT bit set */ |
| mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
| 0); |
| kfree(arr); |
| return check_condition_result; |
| } else if (0x1 & cmd[1]) { /* EVPD bit set */ |
| int lu_id_num, port_group_id, target_dev_id, len; |
| char lu_id_str[6]; |
| int host_no = devip->sdbg_host->shost->host_no; |
| |
| port_group_id = (((host_no + 1) & 0x7f) << 8) + |
| (devip->channel & 0x7f); |
| if (0 == scsi_debug_vpd_use_hostno) |
| host_no = 0; |
| lu_id_num = devip->wlun ? -1 : (((host_no + 1) * 2000) + |
| (devip->target * 1000) + devip->lun); |
| target_dev_id = ((host_no + 1) * 2000) + |
| (devip->target * 1000) - 3; |
| len = scnprintf(lu_id_str, 6, "%d", lu_id_num); |
| if (0 == cmd[2]) { /* supported vital product data pages */ |
| arr[1] = cmd[2]; /*sanity */ |
| n = 4; |
| arr[n++] = 0x0; /* this page */ |
| arr[n++] = 0x80; /* unit serial number */ |
| arr[n++] = 0x83; /* device identification */ |
| arr[n++] = 0x84; /* software interface ident. */ |
| arr[n++] = 0x85; /* management network addresses */ |
| arr[n++] = 0x86; /* extended inquiry */ |
| arr[n++] = 0x87; /* mode page policy */ |
| arr[n++] = 0x88; /* SCSI ports */ |
| arr[n++] = 0x89; /* ATA information */ |
| arr[n++] = 0xb0; /* Block limits (SBC) */ |
| arr[n++] = 0xb1; /* Block characteristics (SBC) */ |
| if (scsi_debug_lbp()) /* Logical Block Prov. (SBC) */ |
| arr[n++] = 0xb2; |
| arr[3] = n - 4; /* number of supported VPD pages */ |
| } else if (0x80 == cmd[2]) { /* unit serial number */ |
| arr[1] = cmd[2]; /*sanity */ |
| arr[3] = len; |
| memcpy(&arr[4], lu_id_str, len); |
| } else if (0x83 == cmd[2]) { /* device identification */ |
| arr[1] = cmd[2]; /*sanity */ |
| arr[3] = inquiry_evpd_83(&arr[4], port_group_id, |
| target_dev_id, lu_id_num, |
| lu_id_str, len); |
| } else if (0x84 == cmd[2]) { /* Software interface ident. */ |
| arr[1] = cmd[2]; /*sanity */ |
| arr[3] = inquiry_evpd_84(&arr[4]); |
| } else if (0x85 == cmd[2]) { /* Management network addresses */ |
| arr[1] = cmd[2]; /*sanity */ |
| arr[3] = inquiry_evpd_85(&arr[4]); |
| } else if (0x86 == cmd[2]) { /* extended inquiry */ |
| arr[1] = cmd[2]; /*sanity */ |
| arr[3] = 0x3c; /* number of following entries */ |
| if (scsi_debug_dif == SD_DIF_TYPE3_PROTECTION) |
| arr[4] = 0x4; /* SPT: GRD_CHK:1 */ |
| else if (scsi_debug_dif) |
| arr[4] = 0x5; /* SPT: GRD_CHK:1, REF_CHK:1 */ |
| else |
| arr[4] = 0x0; /* no protection stuff */ |
| arr[5] = 0x7; /* head of q, ordered + simple q's */ |
| } else if (0x87 == cmd[2]) { /* mode page policy */ |
| arr[1] = cmd[2]; /*sanity */ |
| arr[3] = 0x8; /* number of following entries */ |
| arr[4] = 0x2; /* disconnect-reconnect mp */ |
| arr[6] = 0x80; /* mlus, shared */ |
| arr[8] = 0x18; /* protocol specific lu */ |
| arr[10] = 0x82; /* mlus, per initiator port */ |
| } else if (0x88 == cmd[2]) { /* SCSI Ports */ |
| arr[1] = cmd[2]; /*sanity */ |
| arr[3] = inquiry_evpd_88(&arr[4], target_dev_id); |
| } else if (0x89 == cmd[2]) { /* ATA information */ |
| arr[1] = cmd[2]; /*sanity */ |
| n = inquiry_evpd_89(&arr[4]); |
| arr[2] = (n >> 8); |
| arr[3] = (n & 0xff); |
| } else if (0xb0 == cmd[2]) { /* Block limits (SBC) */ |
| arr[1] = cmd[2]; /*sanity */ |
| arr[3] = inquiry_evpd_b0(&arr[4]); |
| } else if (0xb1 == cmd[2]) { /* Block characteristics (SBC) */ |
| arr[1] = cmd[2]; /*sanity */ |
| arr[3] = inquiry_evpd_b1(&arr[4]); |
| } else if (0xb2 == cmd[2]) { /* Logical Block Prov. (SBC) */ |
| arr[1] = cmd[2]; /*sanity */ |
| arr[3] = inquiry_evpd_b2(&arr[4]); |
| } else { |
| /* Illegal request, invalid field in cdb */ |
| mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| INVALID_FIELD_IN_CDB, 0); |
| kfree(arr); |
| return check_condition_result; |
| } |
| len = min(((arr[2] << 8) + arr[3]) + 4, alloc_len); |
| ret = fill_from_dev_buffer(scp, arr, |
| min(len, SDEBUG_MAX_INQ_ARR_SZ)); |
| kfree(arr); |
| return ret; |
| } |
| /* drops through here for a standard inquiry */ |
| arr[1] = DEV_REMOVEABLE(target) ? 0x80 : 0; /* Removable disk */ |
| arr[2] = scsi_debug_scsi_level; |
| arr[3] = 2; /* response_data_format==2 */ |
| arr[4] = SDEBUG_LONG_INQ_SZ - 5; |
| arr[5] = scsi_debug_dif ? 1 : 0; /* PROTECT bit */ |
| if (0 == scsi_debug_vpd_use_hostno) |
| arr[5] = 0x10; /* claim: implicit TGPS */ |
| arr[6] = 0x10; /* claim: MultiP */ |
| /* arr[6] |= 0x40; ... claim: EncServ (enclosure services) */ |
| arr[7] = 0xa; /* claim: LINKED + CMDQUE */ |
| memcpy(&arr[8], inq_vendor_id, 8); |
| memcpy(&arr[16], inq_product_id, 16); |
| memcpy(&arr[32], inq_product_rev, 4); |
| /* version descriptors (2 bytes each) follow */ |
| arr[58] = 0x0; arr[59] = 0x77; /* SAM-3 ANSI */ |
| arr[60] = 0x3; arr[61] = 0x14; /* SPC-3 ANSI */ |
| n = 62; |
| if (scsi_debug_ptype == 0) { |
| arr[n++] = 0x3; arr[n++] = 0x3d; /* SBC-2 ANSI */ |
| } else if (scsi_debug_ptype == 1) { |
| arr[n++] = 0x3; arr[n++] = 0x60; /* SSC-2 no version */ |
| } |
| arr[n++] = 0xc; arr[n++] = 0xf; /* SAS-1.1 rev 10 */ |
| ret = fill_from_dev_buffer(scp, arr, |
| min(alloc_len, SDEBUG_LONG_INQ_SZ)); |
| kfree(arr); |
| return ret; |
| } |
| |
| static int resp_requests(struct scsi_cmnd * scp, |
| struct sdebug_dev_info * devip) |
| { |
| unsigned char * sbuff; |
| unsigned char *cmd = (unsigned char *)scp->cmnd; |
| unsigned char arr[SDEBUG_SENSE_LEN]; |
| int want_dsense; |
| int len = 18; |
| |
| memset(arr, 0, sizeof(arr)); |
| if (devip->reset == 1) |
| mk_sense_buffer(devip, 0, NO_ADDITIONAL_SENSE, 0); |
| want_dsense = !!(cmd[1] & 1) || scsi_debug_dsense; |
| sbuff = devip->sense_buff; |
| if ((iec_m_pg[2] & 0x4) && (6 == (iec_m_pg[3] & 0xf))) { |
| if (want_dsense) { |
| arr[0] = 0x72; |
| arr[1] = 0x0; /* NO_SENSE in sense_key */ |
| arr[2] = THRESHOLD_EXCEEDED; |
| arr[3] = 0xff; /* TEST set and MRIE==6 */ |
| } else { |
| arr[0] = 0x70; |
| arr[2] = 0x0; /* NO_SENSE in sense_key */ |
| arr[7] = 0xa; /* 18 byte sense buffer */ |
| arr[12] = THRESHOLD_EXCEEDED; |
| arr[13] = 0xff; /* TEST set and MRIE==6 */ |
| } |
| } else { |
| memcpy(arr, sbuff, SDEBUG_SENSE_LEN); |
| if ((cmd[1] & 1) && (! scsi_debug_dsense)) { |
| /* DESC bit set and sense_buff in fixed format */ |
| memset(arr, 0, sizeof(arr)); |
| arr[0] = 0x72; |
| arr[1] = sbuff[2]; /* sense key */ |
| arr[2] = sbuff[12]; /* asc */ |
| arr[3] = sbuff[13]; /* ascq */ |
| len = 8; |
| } |
| } |
| mk_sense_buffer(devip, 0, NO_ADDITIONAL_SENSE, 0); |
| return fill_from_dev_buffer(scp, arr, len); |
| } |
| |
| static int resp_start_stop(struct scsi_cmnd * scp, |
| struct sdebug_dev_info * devip) |
| { |
| unsigned char *cmd = (unsigned char *)scp->cmnd; |
| int power_cond, errsts, start; |
| |
| if ((errsts = check_readiness(scp, 1, devip))) |
| return errsts; |
| power_cond = (cmd[4] & 0xf0) >> 4; |
| if (power_cond) { |
| mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
| 0); |
| return check_condition_result; |
| } |
| start = cmd[4] & 1; |
| if (start == devip->stopped) |
| devip->stopped = !start; |
| return 0; |
| } |
| |
| static sector_t get_sdebug_capacity(void) |
| { |
| if (scsi_debug_virtual_gb > 0) |
| return (sector_t)scsi_debug_virtual_gb * |
| (1073741824 / scsi_debug_sector_size); |
| else |
| return sdebug_store_sectors; |
| } |
| |
| #define SDEBUG_READCAP_ARR_SZ 8 |
| static int resp_readcap(struct scsi_cmnd * scp, |
| struct sdebug_dev_info * devip) |
| { |
| unsigned char arr[SDEBUG_READCAP_ARR_SZ]; |
| unsigned int capac; |
| int errsts; |
| |
| if ((errsts = check_readiness(scp, 1, devip))) |
| return errsts; |
| /* following just in case virtual_gb changed */ |
| sdebug_capacity = get_sdebug_capacity(); |
| memset(arr, 0, SDEBUG_READCAP_ARR_SZ); |
| if (sdebug_capacity < 0xffffffff) { |
| capac = (unsigned int)sdebug_capacity - 1; |
| arr[0] = (capac >> 24); |
| arr[1] = (capac >> 16) & 0xff; |
| arr[2] = (capac >> 8) & 0xff; |
| arr[3] = capac & 0xff; |
| } else { |
| arr[0] = 0xff; |
| arr[1] = 0xff; |
| arr[2] = 0xff; |
| arr[3] = 0xff; |
| } |
| arr[6] = (scsi_debug_sector_size >> 8) & 0xff; |
| arr[7] = scsi_debug_sector_size & 0xff; |
| return fill_from_dev_buffer(scp, arr, SDEBUG_READCAP_ARR_SZ); |
| } |
| |
| #define SDEBUG_READCAP16_ARR_SZ 32 |
| static int resp_readcap16(struct scsi_cmnd * scp, |
| struct sdebug_dev_info * devip) |
| { |
| unsigned char *cmd = (unsigned char *)scp->cmnd; |
| unsigned char arr[SDEBUG_READCAP16_ARR_SZ]; |
| unsigned long long capac; |
| int errsts, k, alloc_len; |
| |
| if ((errsts = check_readiness(scp, 1, devip))) |
| return errsts; |
| alloc_len = ((cmd[10] << 24) + (cmd[11] << 16) + (cmd[12] << 8) |
| + cmd[13]); |
| /* following just in case virtual_gb changed */ |
| sdebug_capacity = get_sdebug_capacity(); |
| memset(arr, 0, SDEBUG_READCAP16_ARR_SZ); |
| capac = sdebug_capacity - 1; |
| for (k = 0; k < 8; ++k, capac >>= 8) |
| arr[7 - k] = capac & 0xff; |
| arr[8] = (scsi_debug_sector_size >> 24) & 0xff; |
| arr[9] = (scsi_debug_sector_size >> 16) & 0xff; |
| arr[10] = (scsi_debug_sector_size >> 8) & 0xff; |
| arr[11] = scsi_debug_sector_size & 0xff; |
| arr[13] = scsi_debug_physblk_exp & 0xf; |
| arr[14] = (scsi_debug_lowest_aligned >> 8) & 0x3f; |
| |
| if (scsi_debug_lbp()) |
| arr[14] |= 0x80; /* LBPME */ |
| |
| arr[15] = scsi_debug_lowest_aligned & 0xff; |
| |
| if (scsi_debug_dif) { |
| arr[12] = (scsi_debug_dif - 1) << 1; /* P_TYPE */ |
| arr[12] |= 1; /* PROT_EN */ |
| } |
| |
| return fill_from_dev_buffer(scp, arr, |
| min(alloc_len, SDEBUG_READCAP16_ARR_SZ)); |
| } |
| |
| #define SDEBUG_MAX_TGTPGS_ARR_SZ 1412 |
| |
| static int resp_report_tgtpgs(struct scsi_cmnd * scp, |
| struct sdebug_dev_info * devip) |
| { |
| unsigned char *cmd = (unsigned char *)scp->cmnd; |
| unsigned char * arr; |
| int host_no = devip->sdbg_host->shost->host_no; |
| int n, ret, alen, rlen; |
| int port_group_a, port_group_b, port_a, port_b; |
| |
| alen = ((cmd[6] << 24) + (cmd[7] << 16) + (cmd[8] << 8) |
| + cmd[9]); |
| |
| arr = kzalloc(SDEBUG_MAX_TGTPGS_ARR_SZ, GFP_ATOMIC); |
| if (! arr) |
| return DID_REQUEUE << 16; |
| /* |
| * EVPD page 0x88 states we have two ports, one |
| * real and a fake port with no device connected. |
| * So we create two port groups with one port each |
| * and set the group with port B to unavailable. |
| */ |
| port_a = 0x1; /* relative port A */ |
| port_b = 0x2; /* relative port B */ |
| port_group_a = (((host_no + 1) & 0x7f) << 8) + |
| (devip->channel & 0x7f); |
| port_group_b = (((host_no + 1) & 0x7f) << 8) + |
| (devip->channel & 0x7f) + 0x80; |
| |
| /* |
| * The asymmetric access state is cycled according to the host_id. |
| */ |
| n = 4; |
| if (0 == scsi_debug_vpd_use_hostno) { |
| arr[n++] = host_no % 3; /* Asymm access state */ |
| arr[n++] = 0x0F; /* claim: all states are supported */ |
| } else { |
| arr[n++] = 0x0; /* Active/Optimized path */ |
| arr[n++] = 0x01; /* claim: only support active/optimized paths */ |
| } |
| arr[n++] = (port_group_a >> 8) & 0xff; |
| arr[n++] = port_group_a & 0xff; |
| arr[n++] = 0; /* Reserved */ |
| arr[n++] = 0; /* Status code */ |
| arr[n++] = 0; /* Vendor unique */ |
| arr[n++] = 0x1; /* One port per group */ |
| arr[n++] = 0; /* Reserved */ |
| arr[n++] = 0; /* Reserved */ |
| arr[n++] = (port_a >> 8) & 0xff; |
| arr[n++] = port_a & 0xff; |
| arr[n++] = 3; /* Port unavailable */ |
| arr[n++] = 0x08; /* claim: only unavailalbe paths are supported */ |
| arr[n++] = (port_group_b >> 8) & 0xff; |
| arr[n++] = port_group_b & 0xff; |
| arr[n++] = 0; /* Reserved */ |
| arr[n++] = 0; /* Status code */ |
| arr[n++] = 0; /* Vendor unique */ |
| arr[n++] = 0x1; /* One port per group */ |
| arr[n++] = 0; /* Reserved */ |
| arr[n++] = 0; /* Reserved */ |
| arr[n++] = (port_b >> 8) & 0xff; |
| arr[n++] = port_b & 0xff; |
| |
| rlen = n - 4; |
| arr[0] = (rlen >> 24) & 0xff; |
| arr[1] = (rlen >> 16) & 0xff; |
| arr[2] = (rlen >> 8) & 0xff; |
| arr[3] = rlen & 0xff; |
| |
| /* |
| * Return the smallest value of either |
| * - The allocated length |
| * - The constructed command length |
| * - The maximum array size |
| */ |
| rlen = min(alen,n); |
| ret = fill_from_dev_buffer(scp, arr, |
| min(rlen, SDEBUG_MAX_TGTPGS_ARR_SZ)); |
| kfree(arr); |
| return ret; |
| } |
| |
| /* <<Following mode page info copied from ST318451LW>> */ |
| |
| static int resp_err_recov_pg(unsigned char * p, int pcontrol, int target) |
| { /* Read-Write Error Recovery page for mode_sense */ |
| unsigned char err_recov_pg[] = {0x1, 0xa, 0xc0, 11, 240, 0, 0, 0, |
| 5, 0, 0xff, 0xff}; |
| |
| memcpy(p, err_recov_pg, sizeof(err_recov_pg)); |
| if (1 == pcontrol) |
| memset(p + 2, 0, sizeof(err_recov_pg) - 2); |
| return sizeof(err_recov_pg); |
| } |
| |
| static int resp_disconnect_pg(unsigned char * p, int pcontrol, int target) |
| { /* Disconnect-Reconnect page for mode_sense */ |
| unsigned char disconnect_pg[] = {0x2, 0xe, 128, 128, 0, 10, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0}; |
| |
| memcpy(p, disconnect_pg, sizeof(disconnect_pg)); |
| if (1 == pcontrol) |
| memset(p + 2, 0, sizeof(disconnect_pg) - 2); |
| return sizeof(disconnect_pg); |
| } |
| |
| static int resp_format_pg(unsigned char * p, int pcontrol, int target) |
| { /* Format device page for mode_sense */ |
| unsigned char format_pg[] = {0x3, 0x16, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0x40, 0, 0, 0}; |
| |
| memcpy(p, format_pg, sizeof(format_pg)); |
| p[10] = (sdebug_sectors_per >> 8) & 0xff; |
| p[11] = sdebug_sectors_per & 0xff; |
| p[12] = (scsi_debug_sector_size >> 8) & 0xff; |
| p[13] = scsi_debug_sector_size & 0xff; |
| if (DEV_REMOVEABLE(target)) |
| p[20] |= 0x20; /* should agree with INQUIRY */ |
| if (1 == pcontrol) |
| memset(p + 2, 0, sizeof(format_pg) - 2); |
| return sizeof(format_pg); |
| } |
| |
| static int resp_caching_pg(unsigned char * p, int pcontrol, int target) |
| { /* Caching page for mode_sense */ |
| unsigned char caching_pg[] = {0x8, 18, 0x14, 0, 0xff, 0xff, 0, 0, |
| 0xff, 0xff, 0xff, 0xff, 0x80, 0x14, 0, 0, 0, 0, 0, 0}; |
| |
| memcpy(p, caching_pg, sizeof(caching_pg)); |
| if (1 == pcontrol) |
| memset(p + 2, 0, sizeof(caching_pg) - 2); |
| return sizeof(caching_pg); |
| } |
| |
| static int resp_ctrl_m_pg(unsigned char * p, int pcontrol, int target) |
| { /* Control mode page for mode_sense */ |
| unsigned char ch_ctrl_m_pg[] = {/* 0xa, 10, */ 0x6, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0}; |
| unsigned char d_ctrl_m_pg[] = {0xa, 10, 2, 0, 0, 0, 0, 0, |
| 0, 0, 0x2, 0x4b}; |
| |
| if (scsi_debug_dsense) |
| ctrl_m_pg[2] |= 0x4; |
| else |
| ctrl_m_pg[2] &= ~0x4; |
| |
| if (scsi_debug_ato) |
| ctrl_m_pg[5] |= 0x80; /* ATO=1 */ |
| |
| memcpy(p, ctrl_m_pg, sizeof(ctrl_m_pg)); |
| if (1 == pcontrol) |
| memcpy(p + 2, ch_ctrl_m_pg, sizeof(ch_ctrl_m_pg)); |
| else if (2 == pcontrol) |
| memcpy(p, d_ctrl_m_pg, sizeof(d_ctrl_m_pg)); |
| return sizeof(ctrl_m_pg); |
| } |
| |
| |
| static int resp_iec_m_pg(unsigned char * p, int pcontrol, int target) |
| { /* Informational Exceptions control mode page for mode_sense */ |
| unsigned char ch_iec_m_pg[] = {/* 0x1c, 0xa, */ 0x4, 0xf, 0, 0, 0, 0, |
| 0, 0, 0x0, 0x0}; |
| unsigned char d_iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0, |
| 0, 0, 0x0, 0x0}; |
| |
| memcpy(p, iec_m_pg, sizeof(iec_m_pg)); |
| if (1 == pcontrol) |
| memcpy(p + 2, ch_iec_m_pg, sizeof(ch_iec_m_pg)); |
| else if (2 == pcontrol) |
| memcpy(p, d_iec_m_pg, sizeof(d_iec_m_pg)); |
| return sizeof(iec_m_pg); |
| } |
| |
| static int resp_sas_sf_m_pg(unsigned char * p, int pcontrol, int target) |
| { /* SAS SSP mode page - short format for mode_sense */ |
| unsigned char sas_sf_m_pg[] = {0x19, 0x6, |
| 0x6, 0x0, 0x7, 0xd0, 0x0, 0x0}; |
| |
| memcpy(p, sas_sf_m_pg, sizeof(sas_sf_m_pg)); |
| if (1 == pcontrol) |
| memset(p + 2, 0, sizeof(sas_sf_m_pg) - 2); |
| return sizeof(sas_sf_m_pg); |
| } |
| |
| |
| static int resp_sas_pcd_m_spg(unsigned char * p, int pcontrol, int target, |
| int target_dev_id) |
| { /* SAS phy control and discover mode page for mode_sense */ |
| unsigned char sas_pcd_m_pg[] = {0x59, 0x1, 0, 0x64, 0, 0x6, 0, 2, |
| 0, 0, 0, 0, 0x10, 0x9, 0x8, 0x0, |
| 0x52, 0x22, 0x22, 0x20, 0x0, 0x0, 0x0, 0x0, |
| 0x51, 0x11, 0x11, 0x10, 0x0, 0x0, 0x0, 0x1, |
| 0x2, 0, 0, 0, 0, 0, 0, 0, |
| 0x88, 0x99, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 1, 0, 0, 0x10, 0x9, 0x8, 0x0, |
| 0x52, 0x22, 0x22, 0x20, 0x0, 0x0, 0x0, 0x0, |
| 0x51, 0x11, 0x11, 0x10, 0x0, 0x0, 0x0, 0x1, |
| 0x3, 0, 0, 0, 0, 0, 0, 0, |
| 0x88, 0x99, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, |
| }; |
| int port_a, port_b; |
| |
| port_a = target_dev_id + 1; |
| port_b = port_a + 1; |
| memcpy(p, sas_pcd_m_pg, sizeof(sas_pcd_m_pg)); |
| p[20] = (port_a >> 24); |
| p[21] = (port_a >> 16) & 0xff; |
| p[22] = (port_a >> 8) & 0xff; |
| p[23] = port_a & 0xff; |
| p[48 + 20] = (port_b >> 24); |
| p[48 + 21] = (port_b >> 16) & 0xff; |
| p[48 + 22] = (port_b >> 8) & 0xff; |
| p[48 + 23] = port_b & 0xff; |
| if (1 == pcontrol) |
| memset(p + 4, 0, sizeof(sas_pcd_m_pg) - 4); |
| return sizeof(sas_pcd_m_pg); |
| } |
| |
| static int resp_sas_sha_m_spg(unsigned char * p, int pcontrol) |
| { /* SAS SSP shared protocol specific port mode subpage */ |
| unsigned char sas_sha_m_pg[] = {0x59, 0x2, 0, 0xc, 0, 0x6, 0x10, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, |
| }; |
| |
| memcpy(p, sas_sha_m_pg, sizeof(sas_sha_m_pg)); |
| if (1 == pcontrol) |
| memset(p + 4, 0, sizeof(sas_sha_m_pg) - 4); |
| return sizeof(sas_sha_m_pg); |
| } |
| |
| #define SDEBUG_MAX_MSENSE_SZ 256 |
| |
| static int resp_mode_sense(struct scsi_cmnd * scp, int target, |
| struct sdebug_dev_info * devip) |
| { |
| unsigned char dbd, llbaa; |
| int pcontrol, pcode, subpcode, bd_len; |
| unsigned char dev_spec; |
| int k, alloc_len, msense_6, offset, len, errsts, target_dev_id; |
| unsigned char * ap; |
| unsigned char arr[SDEBUG_MAX_MSENSE_SZ]; |
| unsigned char *cmd = (unsigned char *)scp->cmnd; |
| |
| if ((errsts = check_readiness(scp, 1, devip))) |
| return errsts; |
| dbd = !!(cmd[1] & 0x8); |
| pcontrol = (cmd[2] & 0xc0) >> 6; |
| pcode = cmd[2] & 0x3f; |
| subpcode = cmd[3]; |
| msense_6 = (MODE_SENSE == cmd[0]); |
| llbaa = msense_6 ? 0 : !!(cmd[1] & 0x10); |
| if ((0 == scsi_debug_ptype) && (0 == dbd)) |
| bd_len = llbaa ? 16 : 8; |
| else |
| bd_len = 0; |
| alloc_len = msense_6 ? cmd[4] : ((cmd[7] << 8) | cmd[8]); |
| memset(arr, 0, SDEBUG_MAX_MSENSE_SZ); |
| if (0x3 == pcontrol) { /* Saving values not supported */ |
| mk_sense_buffer(devip, ILLEGAL_REQUEST, SAVING_PARAMS_UNSUP, |
| 0); |
| return check_condition_result; |
| } |
| target_dev_id = ((devip->sdbg_host->shost->host_no + 1) * 2000) + |
| (devip->target * 1000) - 3; |
| /* set DPOFUA bit for disks */ |
| if (0 == scsi_debug_ptype) |
| dev_spec = (DEV_READONLY(target) ? 0x80 : 0x0) | 0x10; |
| else |
| dev_spec = 0x0; |
| if (msense_6) { |
| arr[2] = dev_spec; |
| arr[3] = bd_len; |
| offset = 4; |
| } else { |
| arr[3] = dev_spec; |
| if (16 == bd_len) |
| arr[4] = 0x1; /* set LONGLBA bit */ |
| arr[7] = bd_len; /* assume 255 or less */ |
| offset = 8; |
| } |
| ap = arr + offset; |
| if ((bd_len > 0) && (!sdebug_capacity)) |
| sdebug_capacity = get_sdebug_capacity(); |
| |
| if (8 == bd_len) { |
| if (sdebug_capacity > 0xfffffffe) { |
| ap[0] = 0xff; |
| ap[1] = 0xff; |
| ap[2] = 0xff; |
| ap[3] = 0xff; |
| } else { |
| ap[0] = (sdebug_capacity >> 24) & 0xff; |
| ap[1] = (sdebug_capacity >> 16) & 0xff; |
| ap[2] = (sdebug_capacity >> 8) & 0xff; |
| ap[3] = sdebug_capacity & 0xff; |
| } |
| ap[6] = (scsi_debug_sector_size >> 8) & 0xff; |
| ap[7] = scsi_debug_sector_size & 0xff; |
| offset += bd_len; |
| ap = arr + offset; |
| } else if (16 == bd_len) { |
| unsigned long long capac = sdebug_capacity; |
| |
| for (k = 0; k < 8; ++k, capac >>= 8) |
| ap[7 - k] = capac & 0xff; |
| ap[12] = (scsi_debug_sector_size >> 24) & 0xff; |
| ap[13] = (scsi_debug_sector_size >> 16) & 0xff; |
| ap[14] = (scsi_debug_sector_size >> 8) & 0xff; |
| ap[15] = scsi_debug_sector_size & 0xff; |
| offset += bd_len; |
| ap = arr + offset; |
| } |
| |
| if ((subpcode > 0x0) && (subpcode < 0xff) && (0x19 != pcode)) { |
| /* TODO: Control Extension page */ |
| mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
| 0); |
| return check_condition_result; |
| } |
| switch (pcode) { |
| case 0x1: /* Read-Write error recovery page, direct access */ |
| len = resp_err_recov_pg(ap, pcontrol, target); |
| offset += len; |
| break; |
| case 0x2: /* Disconnect-Reconnect page, all devices */ |
| len = resp_disconnect_pg(ap, pcontrol, target); |
| offset += len; |
| break; |
| case 0x3: /* Format device page, direct access */ |
| len = resp_format_pg(ap, pcontrol, target); |
| offset += len; |
| break; |
| case 0x8: /* Caching page, direct access */ |
| len = resp_caching_pg(ap, pcontrol, target); |
| offset += len; |
| break; |
| case 0xa: /* Control Mode page, all devices */ |
| len = resp_ctrl_m_pg(ap, pcontrol, target); |
| offset += len; |
| break; |
| case 0x19: /* if spc==1 then sas phy, control+discover */ |
| if ((subpcode > 0x2) && (subpcode < 0xff)) { |
| mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| INVALID_FIELD_IN_CDB, 0); |
| return check_condition_result; |
| } |
| len = 0; |
| if ((0x0 == subpcode) || (0xff == subpcode)) |
| len += resp_sas_sf_m_pg(ap + len, pcontrol, target); |
| if ((0x1 == subpcode) || (0xff == subpcode)) |
| len += resp_sas_pcd_m_spg(ap + len, pcontrol, target, |
| target_dev_id); |
| if ((0x2 == subpcode) || (0xff == subpcode)) |
| len += resp_sas_sha_m_spg(ap + len, pcontrol); |
| offset += len; |
| break; |
| case 0x1c: /* Informational Exceptions Mode page, all devices */ |
| len = resp_iec_m_pg(ap, pcontrol, target); |
| offset += len; |
| break; |
| case 0x3f: /* Read all Mode pages */ |
| if ((0 == subpcode) || (0xff == subpcode)) { |
| len = resp_err_recov_pg(ap, pcontrol, target); |
| len += resp_disconnect_pg(ap + len, pcontrol, target); |
| len += resp_format_pg(ap + len, pcontrol, target); |
| len += resp_caching_pg(ap + len, pcontrol, target); |
| len += resp_ctrl_m_pg(ap + len, pcontrol, target); |
| len += resp_sas_sf_m_pg(ap + len, pcontrol, target); |
| if (0xff == subpcode) { |
| len += resp_sas_pcd_m_spg(ap + len, pcontrol, |
| target, target_dev_id); |
| len += resp_sas_sha_m_spg(ap + len, pcontrol); |
| } |
| len += resp_iec_m_pg(ap + len, pcontrol, target); |
| } else { |
| mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| INVALID_FIELD_IN_CDB, 0); |
| return check_condition_result; |
| } |
| offset += len; |
| break; |
| default: |
| mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
| 0); |
| return check_condition_result; |
| } |
| if (msense_6) |
| arr[0] = offset - 1; |
| else { |
| arr[0] = ((offset - 2) >> 8) & 0xff; |
| arr[1] = (offset - 2) & 0xff; |
| } |
| return fill_from_dev_buffer(scp, arr, min(alloc_len, offset)); |
| } |
| |
| #define SDEBUG_MAX_MSELECT_SZ 512 |
| |
| static int resp_mode_select(struct scsi_cmnd * scp, int mselect6, |
| struct sdebug_dev_info * devip) |
| { |
| int pf, sp, ps, md_len, bd_len, off, spf, pg_len; |
| int param_len, res, errsts, mpage; |
| unsigned char arr[SDEBUG_MAX_MSELECT_SZ]; |
| unsigned char *cmd = (unsigned char *)scp->cmnd; |
| |
| if ((errsts = check_readiness(scp, 1, devip))) |
| return errsts; |
| memset(arr, 0, sizeof(arr)); |
| pf = cmd[1] & 0x10; |
| sp = cmd[1] & 0x1; |
| param_len = mselect6 ? cmd[4] : ((cmd[7] << 8) + cmd[8]); |
| if ((0 == pf) || sp || (param_len > SDEBUG_MAX_MSELECT_SZ)) { |
| mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| INVALID_FIELD_IN_CDB, 0); |
| return check_condition_result; |
| } |
| res = fetch_to_dev_buffer(scp, arr, param_len); |
| if (-1 == res) |
| return (DID_ERROR << 16); |
| else if ((res < param_len) && |
| (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)) |
| printk(KERN_INFO "scsi_debug: mode_select: cdb indicated=%d, " |
| " IO sent=%d bytes\n", param_len, res); |
| md_len = mselect6 ? (arr[0] + 1) : ((arr[0] << 8) + arr[1] + 2); |
| bd_len = mselect6 ? arr[3] : ((arr[6] << 8) + arr[7]); |
| if (md_len > 2) { |
| mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| INVALID_FIELD_IN_PARAM_LIST, 0); |
| return check_condition_result; |
| } |
| off = bd_len + (mselect6 ? 4 : 8); |
| mpage = arr[off] & 0x3f; |
| ps = !!(arr[off] & 0x80); |
| if (ps) { |
| mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| INVALID_FIELD_IN_PARAM_LIST, 0); |
| return check_condition_result; |
| } |
| spf = !!(arr[off] & 0x40); |
| pg_len = spf ? ((arr[off + 2] << 8) + arr[off + 3] + 4) : |
| (arr[off + 1] + 2); |
| if ((pg_len + off) > param_len) { |
| mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| PARAMETER_LIST_LENGTH_ERR, 0); |
| return check_condition_result; |
| } |
| switch (mpage) { |
| case 0xa: /* Control Mode page */ |
| if (ctrl_m_pg[1] == arr[off + 1]) { |
| memcpy(ctrl_m_pg + 2, arr + off + 2, |
| sizeof(ctrl_m_pg) - 2); |
| scsi_debug_dsense = !!(ctrl_m_pg[2] & 0x4); |
| return 0; |
| } |
| break; |
| case 0x1c: /* Informational Exceptions Mode page */ |
| if (iec_m_pg[1] == arr[off + 1]) { |
| memcpy(iec_m_pg + 2, arr + off + 2, |
| sizeof(iec_m_pg) - 2); |
| return 0; |
| } |
| break; |
| default: |
| break; |
| } |
| mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| INVALID_FIELD_IN_PARAM_LIST, 0); |
| return check_condition_result; |
| } |
| |
| static int resp_temp_l_pg(unsigned char * arr) |
| { |
| unsigned char temp_l_pg[] = {0x0, 0x0, 0x3, 0x2, 0x0, 38, |
| 0x0, 0x1, 0x3, 0x2, 0x0, 65, |
| }; |
| |
| memcpy(arr, temp_l_pg, sizeof(temp_l_pg)); |
| return sizeof(temp_l_pg); |
| } |
| |
| static int resp_ie_l_pg(unsigned char * arr) |
| { |
| unsigned char ie_l_pg[] = {0x0, 0x0, 0x3, 0x3, 0x0, 0x0, 38, |
| }; |
| |
| memcpy(arr, ie_l_pg, sizeof(ie_l_pg)); |
| if (iec_m_pg[2] & 0x4) { /* TEST bit set */ |
| arr[4] = THRESHOLD_EXCEEDED; |
| arr[5] = 0xff; |
| } |
| return sizeof(ie_l_pg); |
| } |
| |
| #define SDEBUG_MAX_LSENSE_SZ 512 |
| |
| static int resp_log_sense(struct scsi_cmnd * scp, |
| struct sdebug_dev_info * devip) |
| { |
| int ppc, sp, pcontrol, pcode, subpcode, alloc_len, errsts, len, n; |
| unsigned char arr[SDEBUG_MAX_LSENSE_SZ]; |
| unsigned char *cmd = (unsigned char *)scp->cmnd; |
| |
| if ((errsts = check_readiness(scp, 1, devip))) |
| return errsts; |
| memset(arr, 0, sizeof(arr)); |
| ppc = cmd[1] & 0x2; |
| sp = cmd[1] & 0x1; |
| if (ppc || sp) { |
| mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| INVALID_FIELD_IN_CDB, 0); |
| return check_condition_result; |
| } |
| pcontrol = (cmd[2] & 0xc0) >> 6; |
| pcode = cmd[2] & 0x3f; |
| subpcode = cmd[3] & 0xff; |
| alloc_len = (cmd[7] << 8) + cmd[8]; |
| arr[0] = pcode; |
| if (0 == subpcode) { |
| switch (pcode) { |
| case 0x0: /* Supported log pages log page */ |
| n = 4; |
| arr[n++] = 0x0; /* this page */ |
| arr[n++] = 0xd; /* Temperature */ |
| arr[n++] = 0x2f; /* Informational exceptions */ |
| arr[3] = n - 4; |
| break; |
| case 0xd: /* Temperature log page */ |
| arr[3] = resp_temp_l_pg(arr + 4); |
| break; |
| case 0x2f: /* Informational exceptions log page */ |
| arr[3] = resp_ie_l_pg(arr + 4); |
| break; |
| default: |
| mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| INVALID_FIELD_IN_CDB, 0); |
| return check_condition_result; |
| } |
| } else if (0xff == subpcode) { |
| arr[0] |= 0x40; |
| arr[1] = subpcode; |
| switch (pcode) { |
| case 0x0: /* Supported log pages and subpages log page */ |
| n = 4; |
| arr[n++] = 0x0; |
| arr[n++] = 0x0; /* 0,0 page */ |
| arr[n++] = 0x0; |
| arr[n++] = 0xff; /* this page */ |
| arr[n++] = 0xd; |
| arr[n++] = 0x0; /* Temperature */ |
| arr[n++] = 0x2f; |
| arr[n++] = 0x0; /* Informational exceptions */ |
| arr[3] = n - 4; |
| break; |
| case 0xd: /* Temperature subpages */ |
| n = 4; |
| arr[n++] = 0xd; |
| arr[n++] = 0x0; /* Temperature */ |
| arr[3] = n - 4; |
| break; |
| case 0x2f: /* Informational exceptions subpages */ |
| n = 4; |
| arr[n++] = 0x2f; |
| arr[n++] = 0x0; /* Informational exceptions */ |
| arr[3] = n - 4; |
| break; |
| default: |
| mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| INVALID_FIELD_IN_CDB, 0); |
| return check_condition_result; |
| } |
| } else { |
| mk_sense_buffer(devip, ILLEGAL_REQUEST, |
| INVALID_FIELD_IN_CDB, 0); |
| return check_condition_result; |
| } |
| len = min(((arr[2] << 8) + arr[3]) + 4, alloc_len); |
| return fill_from_dev_buffer(scp, arr, |
| min(len, SDEBUG_MAX_INQ_ARR_SZ)); |
| } |
| |
| static int check_device_access_params(struct sdebug_dev_info *devi, |
| unsigned long long lba, unsigned int num) |
| { |
| if (lba + num > sdebug_capacity) { |
| mk_sense_buffer(devi, ILLEGAL_REQUEST, ADDR_OUT_OF_RANGE, 0); |
| return check_condition_result; |
| } |
| /* transfer length excessive (tie in to block limits VPD page) */ |
| if (num > sdebug_store_sectors) { |
| mk_sense_buffer(devi, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, 0); |
| return check_condition_result; |
| } |
| return 0; |
| } |
| |
| static int do_device_access(struct scsi_cmnd *scmd, |
| struct sdebug_dev_info *devi, |
| unsigned long long lba, unsigned int num, int write) |
| { |
| int ret; |
| unsigned long long block, rest = 0; |
| int (*func)(struct scsi_cmnd *, unsigned char *, int); |
| |
| func = write ? fetch_to_dev_buffer : fill_from_dev_buffer; |
| |
| block = do_div(lba, sdebug_store_sectors); |
| if (block + num > sdebug_store_sectors) |
| rest = block + num - sdebug_store_sectors; |
| |
| ret = func(scmd, fake_storep + (block * scsi_debug_sector_size), |
| (num - rest) * scsi_debug_sector_size); |
| if (!ret && rest) |
| ret = func(scmd, fake_storep, rest * scsi_debug_sector_size); |
| |
| return ret; |
| } |
| |
| static int prot_verify_read(struct scsi_cmnd *SCpnt, sector_t start_sec, |
| unsigned int sectors, u32 ei_lba) |
| { |
| unsigned int i, resid; |
| struct scatterlist *psgl; |
| struct sd_dif_tuple *sdt; |
| sector_t sector; |
| sector_t tmp_sec = start_sec; |
| void *paddr; |
| |
| start_sec = do_div(tmp_sec, sdebug_store_sectors); |
| |
| sdt = (struct sd_dif_tuple *)(dif_storep + dif_offset(start_sec)); |
| |
| for (i = 0 ; i < sectors ; i++) { |
| u16 csum; |
| |
| if (sdt[i].app_tag == 0xffff) |
| continue; |
| |
| sector = start_sec + i; |
| |
| switch (scsi_debug_guard) { |
| case 1: |
| csum = ip_compute_csum(fake_storep + |
| sector * scsi_debug_sector_size, |
| scsi_debug_sector_size); |
| break; |
| case 0: |
| csum = crc_t10dif(fake_storep + |
| sector * scsi_debug_sector_size, |
| scsi_debug_sector_size); |
| csum = cpu_to_be16(csum); |
| break; |
| default: |
| BUG(); |
| } |
| |
| if (sdt[i].guard_tag != csum) { |
| printk(KERN_ERR "%s: GUARD check failed on sector %lu" \ |
| " rcvd 0x%04x, data 0x%04x\n", __func__, |
| (unsigned long)sector, |
| be16_to_cpu(sdt[i].guard_tag), |
| be16_to_cpu(csum)); |
| dif_errors++; |
| return 0x01; |
| } |
| |
| if (scsi_debug_dif == SD_DIF_TYPE1_PROTECTION && |
| be32_to_cpu(sdt[i].ref_tag) != (sector & 0xffffffff)) { |
| printk(KERN_ERR "%s: REF check failed on sector %lu\n", |
| __func__, (unsigned long)sector); |
| dif_errors++; |
| return 0x03; |
| } |
| |
| if (scsi_debug_dif == SD_DIF_TYPE2_PROTECTION && |
| be32_to_cpu(sdt[i].ref_tag) != ei_lba) { |
| printk(KERN_ERR "%s: REF check failed on sector %lu\n", |
| __func__, (unsigned long)sector); |
| dif_errors++; |
| return 0x03; |
| } |
| |
| ei_lba++; |
| } |
| |
| resid = sectors * 8; /* Bytes of protection data to copy into sgl */ |
| sector = start_sec; |
| |
| scsi_for_each_prot_sg(SCpnt, psgl, scsi_prot_sg_count(SCpnt), i) { |
| int len = min(psgl->length, resid); |
| |
| paddr = kmap_atomic(sg_page(psgl), KM_IRQ0) + psgl->offset; |
| memcpy(paddr, dif_storep + dif_offset(sector), len); |
| |
| sector += len >> 3; |
| if (sector >= sdebug_store_sectors) { |
| /* Force wrap */ |
| tmp_sec = sector; |
| sector = do_div(tmp_sec, sdebug_store_sectors); |
| } |
| resid -= len; |
| kunmap_atomic(paddr, KM_IRQ0); |
| } |
| |
| dix_reads++; |
| |
| return 0; |
| } |
| |
| static int resp_read(struct scsi_cmnd *SCpnt, unsigned long long lba, |
| unsigned int num, struct sdebug_dev_info *devip, |
| u32 ei_lba) |
| { |
| unsigned long iflags; |
| int ret; |
| |
| ret = check_device_access_params(devip, lba, num); |
| if (ret) |
| return ret; |
| |
| if ((SCSI_DEBUG_OPT_MEDIUM_ERR & scsi_debug_opts) && |
| (lba <= (OPT_MEDIUM_ERR_ADDR + OPT_MEDIUM_ERR_NUM - 1)) && |
| ((lba + num) > OPT_MEDIUM_ERR_ADDR)) { |
| /* claim unrecoverable read error */ |
| mk_sense_buffer(devip, MEDIUM_ERROR, UNRECOVERED_READ_ERR, 0); |
| /* set info field and valid bit for fixed descriptor */ |
| if (0x70 == (devip->sense_buff[0] & 0x7f)) { |
| devip->sense_buff[0] |= 0x80; /* Valid bit */ |
| ret = (lba < OPT_MEDIUM_ERR_ADDR) |
| ? OPT_MEDIUM_ERR_ADDR : (int)lba; |
| devip->sense_buff[3] = (ret >> 24) & 0xff; |
| devip->sense_buff[4] = (ret >> 16) & 0xff; |
| devip->sense_buff[5] = (ret >> 8) & 0xff; |
| devip->sense_buff[6] = ret & 0xff; |
| } |
| scsi_set_resid(SCpnt, scsi_bufflen(SCpnt)); |
| return check_condition_result; |
| } |
| |
| /* DIX + T10 DIF */ |
| if (scsi_debug_dix && scsi_prot_sg_count(SCpnt)) { |
| int prot_ret = prot_verify_read(SCpnt, lba, num, ei_lba); |
| |
| if (prot_ret) { |
| mk_sense_buffer(devip, ABORTED_COMMAND, 0x10, prot_ret); |
| return illegal_condition_result; |
| } |
| } |
| |
| read_lock_irqsave(&atomic_rw, iflags); |
| ret = do_device_access(SCpnt, devip, lba, num, 0); |
| read_unlock_irqrestore(&atomic_rw, iflags); |
| return ret; |
| } |
| |
| void dump_sector(unsigned char *buf, int len) |
| { |
| int i, j; |
| |
| printk(KERN_ERR ">>> Sector Dump <<<\n"); |
| |
| for (i = 0 ; i < len ; i += 16) { |
| printk(KERN_ERR "%04d: ", i); |
| |
| for (j = 0 ; j < 16 ; j++) { |
| unsigned char c = buf[i+j]; |
| if (c >= 0x20 && c < 0x7e) |
| printk(" %c ", buf[i+j]); |
| else |
| printk("%02x ", buf[i+j]); |
| } |
| |
| printk("\n"); |
| } |
| } |
| |
| static int prot_verify_write(struct scsi_cmnd *SCpnt, sector_t start_sec, |
| unsigned int sectors, u32 ei_lba) |
| { |
| int i, j, ret; |
| struct sd_dif_tuple *sdt; |
| struct scatterlist *dsgl = scsi_sglist(SCpnt); |
| struct scatterlist *psgl = scsi_prot_sglist(SCpnt); |
| void *daddr, *paddr; |
| sector_t tmp_sec = start_sec; |
| sector_t sector; |
| int ppage_offset; |
| unsigned short csum; |
| |
| sector = do_div(tmp_sec, sdebug_store_sectors); |
| |
| BUG_ON(scsi_sg_count(SCpnt) == 0); |
| BUG_ON(scsi_prot_sg_count(SCpnt) == 0); |
| |
| paddr = kmap_atomic(sg_page(psgl), KM_IRQ1) + psgl->offset; |
| ppage_offset = 0; |
| |
| /* For each data page */ |
| scsi_for_each_sg(SCpnt, dsgl, scsi_sg_count(SCpnt), i) { |
| daddr = kmap_atomic(sg_page(dsgl), KM_IRQ0) + dsgl->offset; |
| |
| /* For each sector-sized chunk in data page */ |
| for (j = 0 ; j < dsgl->length ; j += scsi_debug_sector_size) { |
| |
| /* If we're at the end of the current |
| * protection page advance to the next one |
| */ |
| if (ppage_offset >= psgl->length) { |
| kunmap_atomic(paddr, KM_IRQ1); |
| psgl = sg_next(psgl); |
| BUG_ON(psgl == NULL); |
| paddr = kmap_atomic(sg_page(psgl), KM_IRQ1) |
| + psgl->offset; |
| ppage_offset = 0; |
| } |
| |
| sdt = paddr + ppage_offset; |
| |
| switch (scsi_debug_guard) { |
| case 1: |
| csum = ip_compute_csum(daddr, |
| scsi_debug_sector_size); |
| break; |
| case 0: |
| csum = cpu_to_be16(crc_t10dif(daddr, |
| scsi_debug_sector_size)); |
| break; |
| default: |
| BUG(); |
| ret = 0; |
| goto out; |
| } |
| |
| if (sdt->guard_tag != csum) { |
| printk(KERN_ERR |
| "%s: GUARD check failed on sector %lu " \ |
| "rcvd 0x%04x, calculated 0x%04x\n", |
| __func__, (unsigned long)sector, |
| be16_to_cpu(sdt->guard_tag), |
| be16_to_cpu(csum)); |
| ret = 0x01; |
| dump_sector(daddr, scsi_debug_sector_size); |
| goto out; |
| } |
| |
| if (scsi_debug_dif == SD_DIF_TYPE1_PROTECTION && |
| be32_to_cpu(sdt->ref_tag) |
| != (start_sec & 0xffffffff)) { |
| printk(KERN_ERR |
| "%s: REF check failed on sector %lu\n", |
| __func__, (unsigned long)sector); |
| ret = 0x03; |
| dump_sector(daddr, scsi_debug_sector_size); |
| goto out; |
| } |
| |
| if (scsi_debug_dif == SD_DIF_TYPE2_PROTECTION && |
| be32_to_cpu(sdt->ref_tag) != ei_lba) { |
| printk(KERN_ERR |
| "%s: REF check failed on sector %lu\n", |
| __func__, (unsigned long)sector); |
| ret = 0x03; |
| dump_sector(daddr, scsi_debug_sector_size); |
| goto out; |
| } |
| |
| /* Would be great to copy this in bigger |
| * chunks. However, for the sake of |
| * correctness we need to verify each sector |
| * before writing it to "stable" storage |
| */ |
| memcpy(dif_storep + dif_offset(sector), sdt, 8); |
| |
| sector++; |
| |
| if (sector == sdebug_store_sectors) |
| sector = 0; /* Force wrap */ |
| |
| start_sec++; |
| ei_lba++; |
| daddr += scsi_debug_sector_size; |
| ppage_offset += sizeof(struct sd_dif_tuple); |
| } |
| |
| kunmap_atomic(daddr, KM_IRQ0); |
| } |
| |
| kunmap_atomic(paddr, KM_IRQ1); |
| |
| dix_writes++; |
| |
| return 0; |
| |
| out: |
| dif_errors++; |
| kunmap_atomic(daddr, KM_IRQ0); |
| kunmap_atomic(paddr, KM_IRQ1); |
| return ret; |
| } |
| |
| static unsigned int map_state(sector_t lba, unsigned int *num) |
| { |
| unsigned int granularity, alignment, mapped; |
| sector_t block, next, end; |
| |
| granularity = scsi_debug_unmap_granularity; |
| alignment = granularity - scsi_debug_unmap_alignment; |
| block = lba + alignment; |
| do_div(block, granularity); |
| |
| mapped = test_bit(block, map_storep); |
| |
| if (mapped) |
| next = find_next_zero_bit(map_storep, map_size, block); |
| else |
| next = find_next_bit(map_storep, map_size, block); |
| |
| end = next * granularity - scsi_debug_unmap_alignment; |
| *num = end - lba; |
| |
| return mapped; |
| } |
| |
| static void map_region(sector_t lba, unsigned int len) |
| { |
| unsigned int granularity, alignment; |
| sector_t end = lba + len; |
| |
| granularity = scsi_debug_unmap_granularity; |
| alignment = granularity - scsi_debug_unmap_alignment; |
| |
| while (lba < end) { |
| sector_t block, rem; |
| |
| block = lba + alignment; |
| rem = do_div(block, granularity); |
| |
| if (block < map_size) |
| set_bit(block, map_storep); |
| |
| lba += granularity - rem; |
| } |
| } |
| |
| static void unmap_region(sector_t lba, unsigned int len) |
| { |
| unsigned int granularity, alignment; |
| sector_t end = lba + len; |
| |
| granularity = scsi_debug_unmap_granularity; |
| alignment = granularity - scsi_debug_unmap_alignment; |
| |
| while (lba < end) { |
| sector_t block, rem; |
| |
| block = lba + alignment; |
| rem = do_div(block, granularity); |
| |
| if (rem == 0 && lba + granularity <= end && |
| block < map_size) |
| clear_bit(block, map_storep); |
| |
| lba += granularity - rem; |
| } |
| } |
| |
| static int resp_write(struct scsi_cmnd *SCpnt, unsigned long long lba, |
| unsigned int num, struct sdebug_dev_info *devip, |
| u32 ei_lba) |
| { |
| unsigned long iflags; |
| int ret; |
| |
| ret = check_device_access_params(devip, lba, num); |
| if (ret) |
| return ret; |
| |
| /* DIX + T10 DIF */ |
| if (scsi_debug_dix && scsi_prot_sg_count(SCpnt)) { |
| int prot_ret = prot_verify_write(SCpnt, lba, num, ei_lba); |
| |
| if (prot_ret) { |
| mk_sense_buffer(devip, ILLEGAL_REQUEST, 0x10, prot_ret); |
| return illegal_condition_result; |
| } |
| } |
| |
| write_lock_irqsave(&atomic_rw, iflags); |
| ret = do_device_access(SCpnt, devip, lba, num, 1); |
| if (scsi_debug_unmap_granularity) |
| map_region(lba, num); |
| write_unlock_irqrestore(&atomic_rw, iflags); |
| if (-1 == ret) |
| return (DID_ERROR << 16); |
| else if ((ret < (num * scsi_debug_sector_size)) && |
| (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)) |
| printk(KERN_INFO "scsi_debug: write: cdb indicated=%u, " |
| " IO sent=%d bytes\n", num * scsi_debug_sector_size, ret); |
| |
| return 0; |
| } |
| |
| static int resp_write_same(struct scsi_cmnd *scmd, unsigned long long lba, |
| unsigned int num, struct sdebug_dev_info *devip, |
| u32 ei_lba, unsigned int unmap) |
| { |
| unsigned long iflags; |
| unsigned long long i; |
| int ret; |
| |
| ret = check_device_access_params(devip, lba, num); |
| if (ret) |
| return ret; |
| |
| if (num > scsi_debug_write_same_length) { |
| mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
| 0); |
| return check_condition_result; |
| } |
| |
| write_lock_irqsave(&atomic_rw, iflags); |
| |
| if (unmap && scsi_debug_unmap_granularity) { |
| unmap_region(lba, num); |
| goto out; |
| } |
| |
| /* Else fetch one logical block */ |
| ret = fetch_to_dev_buffer(scmd, |
| fake_storep + (lba * scsi_debug_sector_size), |
| scsi_debug_sector_size); |
| |
| if (-1 == ret) { |
| write_unlock_irqrestore(&atomic_rw, iflags); |
| return (DID_ERROR << 16); |
| } else if ((ret < (num * scsi_debug_sector_size)) && |
| (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)) |
| printk(KERN_INFO "scsi_debug: write same: cdb indicated=%u, " |
| " IO sent=%d bytes\n", num * scsi_debug_sector_size, ret); |
| |
| /* Copy first sector to remaining blocks */ |
| for (i = 1 ; i < num ; i++) |
| memcpy(fake_storep + ((lba + i) * scsi_debug_sector_size), |
| fake_storep + (lba * scsi_debug_sector_size), |
| scsi_debug_sector_size); |
| |
| if (scsi_debug_unmap_granularity) |
| map_region(lba, num); |
| out: |
| write_unlock_irqrestore(&atomic_rw, iflags); |
| |
| return 0; |
| } |
| |
| struct unmap_block_desc { |
| __be64 lba; |
| __be32 blocks; |
| __be32 __reserved; |
| }; |
| |
| static int resp_unmap(struct scsi_cmnd * scmd, struct sdebug_dev_info * devip) |
| { |
| unsigned char *buf; |
| struct unmap_block_desc *desc; |
| unsigned int i, payload_len, descriptors; |
| int ret; |
| |
| ret = check_readiness(scmd, 1, devip); |
| if (ret) |
| return ret; |
| |
| payload_len = get_unaligned_be16(&scmd->cmnd[7]); |
| BUG_ON(scsi_bufflen(scmd) != payload_len); |
| |
| descriptors = (payload_len - 8) / 16; |
| |
| buf = kmalloc(scsi_bufflen(scmd), GFP_ATOMIC); |
| if (!buf) |
| return check_condition_result; |
| |
| scsi_sg_copy_to_buffer(scmd, buf, scsi_bufflen(scmd)); |
| |
| BUG_ON(get_unaligned_be16(&buf[0]) != payload_len - 2); |
| BUG_ON(get_unaligned_be16(&buf[2]) != descriptors * 16); |
| |
| desc = (void *)&buf[8]; |
| |
| for (i = 0 ; i < descriptors ; i++) { |
| unsigned long long lba = get_unaligned_be64(&desc[i].lba); |
| unsigned int num = get_unaligned_be32(&desc[i].blocks); |
| |
| ret = check_device_access_params(devip, lba, num); |
| if (ret) |
| goto out; |
| |
| unmap_region(lba, num); |
| } |
| |
| ret = 0; |
| |
| out: |
| kfree(buf); |
| |
| return ret; |
| } |
| |
| #define SDEBUG_GET_LBA_STATUS_LEN 32 |
| |
| static int resp_get_lba_status(struct scsi_cmnd * scmd, |
| struct sdebug_dev_info * devip) |
| { |
| unsigned long long lba; |
| unsigned int alloc_len, mapped, num; |
| unsigned char arr[SDEBUG_GET_LBA_STATUS_LEN]; |
| int ret; |
| |
| ret = check_readiness(scmd, 1, devip); |
| if (ret) |
| return ret; |
| |
| lba = get_unaligned_be64(&scmd->cmnd[2]); |
| alloc_len = get_unaligned_be32(&scmd->cmnd[10]); |
| |
| if (alloc_len < 24) |
| return 0; |
| |
| ret = check_device_access_params(devip, lba, 1); |
| if (ret) |
| return ret; |
| |
| mapped = map_state(lba, &num); |
| |
| memset(arr, 0, SDEBUG_GET_LBA_STATUS_LEN); |
| put_unaligned_be32(16, &arr[0]); /* Parameter Data Length */ |
| put_unaligned_be64(lba, &arr[8]); /* LBA */ |
| put_unaligned_be32(num, &arr[16]); /* Number of blocks */ |
| arr[20] = !mapped; /* mapped = 0, unmapped = 1 */ |
| |
| return fill_from_dev_buffer(scmd, arr, SDEBUG_GET_LBA_STATUS_LEN); |
| } |
| |
| #define SDEBUG_RLUN_ARR_SZ 256 |
| |
| static int resp_report_luns(struct scsi_cmnd * scp, |
| struct sdebug_dev_info * devip) |
| { |
| unsigned int alloc_len; |
| int lun_cnt, i, upper, num, n, wlun, lun; |
| unsigned char *cmd = (unsigned char *)scp->cmnd; |
| int select_report = (int)cmd[2]; |
| struct scsi_lun *one_lun; |
| unsigned char arr[SDEBUG_RLUN_ARR_SZ]; |
| unsigned char * max_addr; |
| |
| alloc_len = cmd[9] + (cmd[8] << 8) + (cmd[7] << 16) + (cmd[6] << 24); |
| if ((alloc_len < 4) || (select_report > 2)) { |
| mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, |
| 0); |
| return check_condition_result; |
| } |
| /* can produce response with up to 16k luns (lun 0 to lun 16383) */ |
| memset(arr, 0, SDEBUG_RLUN_ARR_SZ); |
| lun_cnt = scsi_debug_max_luns; |
| if (1 == select_report) |
| lun_cnt = 0; |
| else if (scsi_debug_no_lun_0 && (lun_cnt > 0)) |
| --lun_cnt; |
| wlun = (select_report > 0) ? 1 : 0; |
| num = lun_cnt + wlun; |
| arr[2] = ((sizeof(struct scsi_lun) * num) >> 8) & 0xff; |
| arr[3] = (sizeof(struct scsi_lun) * num) & 0xff; |
| n = min((int)((SDEBUG_RLUN_ARR_SZ - 8) / |
| sizeof(struct scsi_lun)), num); |
| if (n < num) { |
| wlun = 0; |
| lun_cnt = n; |
| } |
| one_lun = (struct scsi_lun *) &arr[8]; |
| max_addr = arr + SDEBUG_RLUN_ARR_SZ; |
| for (i = 0, lun = (scsi_debug_no_lun_0 ? 1 : 0); |
| ((i < lun_cnt) && ((unsigned char *)(one_lun + i) < max_addr)); |
| i++, lun++) { |
| upper = (lun >> 8) & 0x3f; |
| if (upper) |
| one_lun[i].scsi_lun[0] = |
| (upper | (SAM2_LUN_ADDRESS_METHOD << 6)); |
| one_lun[i].scsi_lun[1] = lun & 0xff; |
| } |
| if (wlun) { |
| one_lun[i].scsi_lun[0] = (SAM2_WLUN_REPORT_LUNS >> 8) & 0xff; |
| one_lun[i].scsi_lun[1] = SAM2_WLUN_REPORT_LUNS & 0xff; |
| i++; |
| } |
| alloc_len = (unsigned char *)(one_lun + i) - arr; |
| return fill_from_dev_buffer(scp, arr, |
| min((int)alloc_len, SDEBUG_RLUN_ARR_SZ)); |
| } |
| |
| static int resp_xdwriteread(struct scsi_cmnd *scp, unsigned long long lba, |
| unsigned int num, struct sdebug_dev_info *devip) |
| { |
| int i, j, ret = -1; |
| unsigned char *kaddr, *buf; |
| unsigned int offset; |
| struct scatterlist *sg; |
| struct scsi_data_buffer *sdb = scsi_in(scp); |
| |
| /* better not to use temporary buffer. */ |
| buf = kmalloc(scsi_bufflen(scp), GFP_ATOMIC); |
| if (!buf) |
| return ret; |
| |
| scsi_sg_copy_to_buffer(scp, buf, scsi_bufflen(scp)); |
| |
| offset = 0; |
| for_each_sg(sdb->table.sgl, sg, sdb->table.nents, i) { |
| kaddr = (unsigned char *)kmap_atomic(sg_page(sg), KM_USER0); |
| if (!kaddr) |
| goto out; |
| |
| for (j = 0; j < sg->length; j++) |
| *(kaddr + sg->offset + j) ^= *(buf + offset + j); |
| |
| offset += sg->length; |
| kunmap_atomic(kaddr, KM_USER0); |
| } |
| ret = 0; |
| out: |
| kfree(buf); |
| |
| return ret; |
| } |
| |
| /* When timer goes off this function is called. */ |
| static void timer_intr_handler(unsigned long indx) |
| { |
| struct sdebug_queued_cmd * sqcp; |
| unsigned long iflags; |
| |
| if (indx >= scsi_debug_max_queue) { |
| printk(KERN_ERR "scsi_debug:timer_intr_handler: indx too " |
| "large\n"); |
| return; |
| } |
| spin_lock_irqsave(&queued_arr_lock, iflags); |
| sqcp = &queued_arr[(int)indx]; |
| if (! sqcp->in_use) { |
| printk(KERN_ERR "scsi_debug:timer_intr_handler: Unexpected " |
| "interrupt\n"); |
| spin_unlock_irqrestore(&queued_arr_lock, iflags); |
| return; |
| } |
| sqcp->in_use = 0; |
| if (sqcp->done_funct) { |
| sqcp->a_cmnd->result = sqcp->scsi_result; |
| sqcp->done_funct(sqcp->a_cmnd); /* callback to mid level */ |
| } |
| sqcp->done_funct = NULL; |
| spin_unlock_irqrestore(&queued_arr_lock, iflags); |
| } |
| |
| |
| static struct sdebug_dev_info * |
| sdebug_device_create(struct sdebug_host_info *sdbg_host, gfp_t flags) |
| { |
| struct sdebug_dev_info *devip; |
| |
| devip = kzalloc(sizeof(*devip), flags); |
| if (devip) { |
| devip->sdbg_host = sdbg_host; |
| list_add_tail(&devip->dev_list, &sdbg_host->dev_info_list); |
| } |
| return devip; |
| } |
| |
| static struct sdebug_dev_info * devInfoReg(struct scsi_device * sdev) |
| { |
| struct sdebug_host_info * sdbg_host; |
| struct sdebug_dev_info * open_devip = NULL; |
| struct sdebug_dev_info * devip = |
| (struct sdebug_dev_info *)sdev->hostdata; |
| |
| if (devip) |
| return devip; |
| sdbg_host = *(struct sdebug_host_info **)shost_priv(sdev->host); |
| if (!sdbg_host) { |
| printk(KERN_ERR "Host info NULL\n"); |
| return NULL; |
| } |
| list_for_each_entry(devip, &sdbg_host->dev_info_list, dev_list) { |
| if ((devip->used) && (devip->channel == sdev->channel) && |
| (devip->target == sdev->id) && |
| (devip->lun == sdev->lun)) |
| return devip; |
| else { |
| if ((!devip->used) && (!open_devip)) |
| open_devip = devip; |
| } |
| } |
| if (!open_devip) { /* try and make a new one */ |
| open_devip = sdebug_device_create(sdbg_host, GFP_ATOMIC); |
| if (!open_devip) { |
| printk(KERN_ERR "%s: out of memory at line %d\n", |
| __func__, __LINE__); |
| return NULL; |
| } |
| } |
| |
| open_devip->channel = sdev->channel; |
| open_devip->target = sdev->id; |
| open_devip->lun = sdev->lun; |
| open_devip->sdbg_host = sdbg_host; |
| open_devip->reset = 1; |
| open_devip->used = 1; |
| memset(open_devip->sense_buff, 0, SDEBUG_SENSE_LEN); |
| if (scsi_debug_dsense) |
| open_devip->sense_buff[0] = 0x72; |
| else { |
| open_devip->sense_buff[0] = 0x70; |
| open_devip->sense_buff[7] = 0xa; |
| } |
| if (sdev->lun == SAM2_WLUN_REPORT_LUNS) |
| open_devip->wlun = SAM2_WLUN_REPORT_LUNS & 0xff; |
| |
| return open_devip; |
| } |
| |
| static int scsi_debug_slave_alloc(struct scsi_device *sdp) |
| { |
| if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| printk(KERN_INFO "scsi_debug: slave_alloc <%u %u %u %u>\n", |
| sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); |
| queue_flag_set_unlocked(QUEUE_FLAG_BIDI, sdp->request_queue); |
| return 0; |
| } |
| |
| static int scsi_debug_slave_configure(struct scsi_device *sdp) |
| { |
| struct sdebug_dev_info *devip; |
| |
| if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| printk(KERN_INFO "scsi_debug: slave_configure <%u %u %u %u>\n", |
| sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); |
| if (sdp->host->max_cmd_len != SCSI_DEBUG_MAX_CMD_LEN) |
| sdp->host->max_cmd_len = SCSI_DEBUG_MAX_CMD_LEN; |
| devip = devInfoReg(sdp); |
| if (NULL == devip) |
| return 1; /* no resources, will be marked offline */ |
| sdp->hostdata = devip; |
| if (sdp->host->cmd_per_lun) |
| scsi_adjust_queue_depth(sdp, SDEBUG_TAGGED_QUEUING, |
| sdp->host->cmd_per_lun); |
| blk_queue_max_segment_size(sdp->request_queue, 256 * 1024); |
| if (scsi_debug_no_uld) |
| sdp->no_uld_attach = 1; |
| return 0; |
| } |
| |
| static void scsi_debug_slave_destroy(struct scsi_device *sdp) |
| { |
| struct sdebug_dev_info *devip = |
| (struct sdebug_dev_info *)sdp->hostdata; |
| |
| if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| printk(KERN_INFO "scsi_debug: slave_destroy <%u %u %u %u>\n", |
| sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); |
| if (devip) { |
| /* make this slot available for re-use */ |
| devip->used = 0; |
| sdp->hostdata = NULL; |
| } |
| } |
| |
| /* Returns 1 if found 'cmnd' and deleted its timer. else returns 0 */ |
| static int stop_queued_cmnd(struct scsi_cmnd *cmnd) |
| { |
| unsigned long iflags; |
| int k; |
| struct sdebug_queued_cmd *sqcp; |
| |
| spin_lock_irqsave(&queued_arr_lock, iflags); |
| for (k = 0; k < scsi_debug_max_queue; ++k) { |
| sqcp = &queued_arr[k]; |
| if (sqcp->in_use && (cmnd == sqcp->a_cmnd)) { |
| del_timer_sync(&sqcp->cmnd_timer); |
| sqcp->in_use = 0; |
| sqcp->a_cmnd = NULL; |
| break; |
| } |
| } |
| spin_unlock_irqrestore(&queued_arr_lock, iflags); |
| return (k < scsi_debug_max_queue) ? 1 : 0; |
| } |
| |
| /* Deletes (stops) timers of all queued commands */ |
| static void stop_all_queued(void) |
| { |
| unsigned long iflags; |
| int k; |
| struct sdebug_queued_cmd *sqcp; |
| |
| spin_lock_irqsave(&queued_arr_lock, iflags); |
| for (k = 0; k < scsi_debug_max_queue; ++k) { |
| sqcp = &queued_arr[k]; |
| if (sqcp->in_use && sqcp->a_cmnd) { |
| del_timer_sync(&sqcp->cmnd_timer); |
| sqcp->in_use = 0; |
| sqcp->a_cmnd = NULL; |
| } |
| } |
| spin_unlock_irqrestore(&queued_arr_lock, iflags); |
| } |
| |
| static int scsi_debug_abort(struct scsi_cmnd * SCpnt) |
| { |
| if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| printk(KERN_INFO "scsi_debug: abort\n"); |
| ++num_aborts; |
| stop_queued_cmnd(SCpnt); |
| return SUCCESS; |
| } |
| |
| static int scsi_debug_biosparam(struct scsi_device *sdev, |
| struct block_device * bdev, sector_t capacity, int *info) |
| { |
| int res; |
| unsigned char *buf; |
| |
| if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| printk(KERN_INFO "scsi_debug: biosparam\n"); |
| buf = scsi_bios_ptable(bdev); |
| if (buf) { |
| res = scsi_partsize(buf, capacity, |
| &info[2], &info[0], &info[1]); |
| kfree(buf); |
| if (! res) |
| return res; |
| } |
| info[0] = sdebug_heads; |
| info[1] = sdebug_sectors_per; |
| info[2] = sdebug_cylinders_per; |
| return 0; |
| } |
| |
| static int scsi_debug_device_reset(struct scsi_cmnd * SCpnt) |
| { |
| struct sdebug_dev_info * devip; |
| |
| if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| printk(KERN_INFO "scsi_debug: device_reset\n"); |
| ++num_dev_resets; |
| if (SCpnt) { |
| devip = devInfoReg(SCpnt->device); |
| if (devip) |
| devip->reset = 1; |
| } |
| return SUCCESS; |
| } |
| |
| static int scsi_debug_bus_reset(struct scsi_cmnd * SCpnt) |
| { |
| struct sdebug_host_info *sdbg_host; |
| struct sdebug_dev_info * dev_info; |
| struct scsi_device * sdp; |
| struct Scsi_Host * hp; |
| |
| if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| printk(KERN_INFO "scsi_debug: bus_reset\n"); |
| ++num_bus_resets; |
| if (SCpnt && ((sdp = SCpnt->device)) && ((hp = sdp->host))) { |
| sdbg_host = *(struct sdebug_host_info **)shost_priv(hp); |
| if (sdbg_host) { |
| list_for_each_entry(dev_info, |
| &sdbg_host->dev_info_list, |
| dev_list) |
| dev_info->reset = 1; |
| } |
| } |
| return SUCCESS; |
| } |
| |
| static int scsi_debug_host_reset(struct scsi_cmnd * SCpnt) |
| { |
| struct sdebug_host_info * sdbg_host; |
| struct sdebug_dev_info * dev_info; |
| |
| if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) |
| printk<
|