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SCSI fixes on 20180905 

A set of very minor fixes and a couple of reverts to fix a major
 problem (the attempt to change the busy count causes a hang when
 attempting to change the drive cache type).
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.vnet.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "A set of very minor fixes and a couple of reverts to fix a major
  problem (the attempt to change the busy count causes a hang when
  attempting to change the drive cache type)"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: aacraid: fix a signedness bug
  Revert "scsi: core: avoid host-wide host_busy counter for scsi_mq"
  Revert "scsi: core: fix scsi_host_queue_ready"
  scsi: libata: Add missing newline at end of file
  scsi: target: iscsi: cxgbit: use pr_debug() instead of pr_info()
  scsi: hpsa: limit transfer length to 1MB, not 512kB
  scsi: lpfc: Correct MDS diag and nvmet configuration
  scsi: lpfc: Default fdmi_on to on
  scsi: csiostor: fix incorrect port capabilities
  scsi: csiostor: add a check for NULL pointer after kmalloc()
  scsi: documentation: add scsi_mod.use_blk_mq to scsi-parameters
  scsi: core: Update SCSI_MQ_DEFAULT help text to match default
hifive-unleashed-5.1
Linus Torvalds 2018-09-05 09:17:20 -07:00
parent d0c1db1da4 b9eb3b14f1
commit f4697d9a8a
13 changed files with 85 additions and 77 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
Documentation/scsi/scsi-parameters.txt
View File

@ -97,6 +97,11 @@ parameters may be changed at runtime by the command
allowing boot to proceed. none ignores them, expecting
user space to do the scan.
scsi_mod.use_blk_mq=
[SCSI] use blk-mq I/O path by default
See SCSI_MQ_DEFAULT in drivers/scsi/Kconfig.
Format: <y/n>
sim710= [SCSI,HW]
See header of drivers/scsi/sim710.c.

2
drivers/ata/libata-core.c
View File

@ -7394,4 +7394,4 @@ EXPORT_SYMBOL_GPL(ata_cable_unknown);
EXPORT_SYMBOL_GPL(ata_cable_ignore);
EXPORT_SYMBOL_GPL(ata_cable_sata);
EXPORT_SYMBOL_GPL(ata_host_get);
EXPORT_SYMBOL_GPL(ata_host_put);
EXPORT_SYMBOL_GPL(ata_host_put);

10
drivers/scsi/Kconfig
View File

@ -52,12 +52,12 @@ config SCSI_MQ_DEFAULT
default y
depends on SCSI
---help---
This option enables the new blk-mq based I/O path for SCSI
devices by default. With the option the scsi_mod.use_blk_mq
module/boot option defaults to Y, without it to N, but it can
still be overridden either way.
This option enables the blk-mq based I/O path for SCSI devices by
default. With this option the scsi_mod.use_blk_mq module/boot
option defaults to Y, without it to N, but it can still be
overridden either way.
If unsure say N.
If unsure say Y.
config SCSI_PROC_FS
bool "legacy /proc/scsi/ support"

2
drivers/scsi/aacraid/aacraid.h
View File

@ -1346,7 +1346,7 @@ struct fib {
struct aac_hba_map_info {
__le32 rmw_nexus; /* nexus for native HBA devices */
u8 devtype; /* device type */
u8 reset_state; /* 0 - no reset, 1..x - */
s8 reset_state; /* 0 - no reset, 1..x - */
/* after xth TM LUN reset */
u16 qd_limit;
u32 scan_counter;

71
drivers/scsi/csiostor/csio_hw.c
View File

@ -1601,6 +1601,46 @@ fw_port_cap32_t fwcaps16_to_caps32(fw_port_cap16_t caps16)
return caps32;
}
/**
* fwcaps32_to_caps16 - convert 32-bit Port Capabilities to 16-bits
* @caps32: a 32-bit Port Capabilities value
*
* Returns the equivalent 16-bit Port Capabilities value. Note that
* not all 32-bit Port Capabilities can be represented in the 16-bit
* Port Capabilities and some fields/values may not make it.
*/
fw_port_cap16_t fwcaps32_to_caps16(fw_port_cap32_t caps32)
{
fw_port_cap16_t caps16 = 0;
#define CAP32_TO_CAP16(__cap) \
do { \
if (caps32 & FW_PORT_CAP32_##__cap) \
caps16 |= FW_PORT_CAP_##__cap; \
} while (0)
CAP32_TO_CAP16(SPEED_100M);
CAP32_TO_CAP16(SPEED_1G);
CAP32_TO_CAP16(SPEED_10G);
CAP32_TO_CAP16(SPEED_25G);
CAP32_TO_CAP16(SPEED_40G);
CAP32_TO_CAP16(SPEED_100G);
CAP32_TO_CAP16(FC_RX);
CAP32_TO_CAP16(FC_TX);
CAP32_TO_CAP16(802_3_PAUSE);
CAP32_TO_CAP16(802_3_ASM_DIR);
CAP32_TO_CAP16(ANEG);
CAP32_TO_CAP16(FORCE_PAUSE);
CAP32_TO_CAP16(MDIAUTO);
CAP32_TO_CAP16(MDISTRAIGHT);
CAP32_TO_CAP16(FEC_RS);
CAP32_TO_CAP16(FEC_BASER_RS);
#undef CAP32_TO_CAP16
return caps16;
}
/**
* lstatus_to_fwcap - translate old lstatus to 32-bit Port Capabilities
* @lstatus: old FW_PORT_ACTION_GET_PORT_INFO lstatus value
@ -1759,7 +1799,7 @@ csio_enable_ports(struct csio_hw *hw)
val = 1;
csio_mb_params(hw, mbp, CSIO_MB_DEFAULT_TMO,
hw->pfn, 0, 1, &param, &val, false,
hw->pfn, 0, 1, &param, &val, true,
NULL);
if (csio_mb_issue(hw, mbp)) {
@ -1769,16 +1809,9 @@ csio_enable_ports(struct csio_hw *hw)
return -EINVAL;
}
csio_mb_process_read_params_rsp(hw, mbp, &retval, 1,
&val);
if (retval != FW_SUCCESS) {
csio_err(hw, "FW_PARAMS_CMD(r) port:%d failed: 0x%x\n",
portid, retval);
mempool_free(mbp, hw->mb_mempool);
return -EINVAL;
}
fw_caps = val;
csio_mb_process_read_params_rsp(hw, mbp, &retval,
0, NULL);
fw_caps = retval ? FW_CAPS16 : FW_CAPS32;
}
/* Read PORT information */
@ -2364,8 +2397,8 @@ bye:
}
/*
* Returns -EINVAL if attempts to flash the firmware failed
* else returns 0,
* Returns -EINVAL if attempts to flash the firmware failed,
* -ENOMEM if memory allocation failed else returns 0,
* if flashing was not attempted because the card had the
* latest firmware ECANCELED is returned
*/
@ -2393,6 +2426,13 @@ csio_hw_flash_fw(struct csio_hw *hw, int *reset)
return -EINVAL;
}
/* allocate memory to read the header of the firmware on the
* card
*/
card_fw = kmalloc(sizeof(*card_fw), GFP_KERNEL);
if (!card_fw)
return -ENOMEM;
if (csio_is_t5(pci_dev->device & CSIO_HW_CHIP_MASK))
fw_bin_file = FW_FNAME_T5;
else
@ -2406,11 +2446,6 @@ csio_hw_flash_fw(struct csio_hw *hw, int *reset)
fw_size = fw->size;
}
/* allocate memory to read the header of the firmware on the
* card
*/
card_fw = kmalloc(sizeof(*card_fw), GFP_KERNEL);
/* upgrade FW logic */
ret = csio_hw_prep_fw(hw, fw_info, fw_data, fw_size, card_fw,
hw->fw_state, reset);

1
drivers/scsi/csiostor/csio_hw.h
View File

@ -639,6 +639,7 @@ int csio_handle_intr_status(struct csio_hw *, unsigned int,
fw_port_cap32_t fwcap_to_fwspeed(fw_port_cap32_t acaps);
fw_port_cap32_t fwcaps16_to_caps32(fw_port_cap16_t caps16);
fw_port_cap16_t fwcaps32_to_caps16(fw_port_cap32_t caps32);
fw_port_cap32_t lstatus_to_fwcap(u32 lstatus);
int csio_hw_start(struct csio_hw *);

6
drivers/scsi/csiostor/csio_mb.c
View File

@ -368,7 +368,7 @@ csio_mb_port(struct csio_hw *hw, struct csio_mb *mbp, uint32_t tmo,
FW_CMD_LEN16_V(sizeof(*cmdp) / 16));
if (fw_caps == FW_CAPS16)
cmdp->u.l1cfg.rcap = cpu_to_be32(fc);
cmdp->u.l1cfg.rcap = cpu_to_be32(fwcaps32_to_caps16(fc));
else
cmdp->u.l1cfg32.rcap32 = cpu_to_be32(fc);
}
@ -395,8 +395,8 @@ csio_mb_process_read_port_rsp(struct csio_hw *hw, struct csio_mb *mbp,
*pcaps = fwcaps16_to_caps32(ntohs(rsp->u.info.pcap));
*acaps = fwcaps16_to_caps32(ntohs(rsp->u.info.acap));
} else {
*pcaps = ntohs(rsp->u.info32.pcaps32);
*acaps = ntohs(rsp->u.info32.acaps32);
*pcaps = be32_to_cpu(rsp->u.info32.pcaps32);
*acaps = be32_to_cpu(rsp->u.info32.acaps32);
}
}
}

24
drivers/scsi/hosts.c
View File

@ -563,35 +563,13 @@ struct Scsi_Host *scsi_host_get(struct Scsi_Host *shost)
}
EXPORT_SYMBOL(scsi_host_get);
struct scsi_host_mq_in_flight {
int cnt;
};
static void scsi_host_check_in_flight(struct request *rq, void *data,
bool reserved)
{
struct scsi_host_mq_in_flight *in_flight = data;
if (blk_mq_request_started(rq))
in_flight->cnt++;
}
/**
* scsi_host_busy - Return the host busy counter
* @shost: Pointer to Scsi_Host to inc.
**/
int scsi_host_busy(struct Scsi_Host *shost)
{
struct scsi_host_mq_in_flight in_flight = {
.cnt = 0,
};
if (!shost->use_blk_mq)
return atomic_read(&shost->host_busy);
blk_mq_tagset_busy_iter(&shost->tag_set, scsi_host_check_in_flight,
&in_flight);
return in_flight.cnt;
return atomic_read(&shost->host_busy);
}
EXPORT_SYMBOL(scsi_host_busy);

2
drivers/scsi/hpsa.c
View File

@ -976,7 +976,7 @@ static struct scsi_host_template hpsa_driver_template = {
#endif
.sdev_attrs = hpsa_sdev_attrs,
.shost_attrs = hpsa_shost_attrs,
.max_sectors = 1024,
.max_sectors = 2048,
.no_write_same = 1,
};

2
drivers/scsi/lpfc/lpfc.h
View File

@ -672,7 +672,7 @@ struct lpfc_hba {
#define LS_NPIV_FAB_SUPPORTED 0x2 /* Fabric supports NPIV */
#define LS_IGNORE_ERATT 0x4 /* intr handler should ignore ERATT */
#define LS_MDS_LINK_DOWN 0x8 /* MDS Diagnostics Link Down */
#define LS_MDS_LOOPBACK 0x16 /* MDS Diagnostics Link Up (Loopback) */
#define LS_MDS_LOOPBACK 0x10 /* MDS Diagnostics Link Up (Loopback) */
uint32_t hba_flag; /* hba generic flags */
#define HBA_ERATT_HANDLED 0x1 /* This flag is set when eratt handled */

8
drivers/scsi/lpfc/lpfc_attr.c
View File

@ -5122,16 +5122,16 @@ LPFC_ATTR_R(enable_SmartSAN, 0, 0, 1, "Enable SmartSAN functionality");
/*
# lpfc_fdmi_on: Controls FDMI support.
# 0 No FDMI support (default)
# 1 Traditional FDMI support
# 0 No FDMI support
# 1 Traditional FDMI support (default)
# Traditional FDMI support means the driver will assume FDMI-2 support;
# however, if that fails, it will fallback to FDMI-1.
# If lpfc_enable_SmartSAN is set to 1, the driver ignores lpfc_fdmi_on.
# If lpfc_enable_SmartSAN is set 0, the driver uses the current value of
# lpfc_fdmi_on.
# Value range [0,1]. Default value is 0.
# Value range [0,1]. Default value is 1.
*/
LPFC_ATTR_R(fdmi_on, 0, 0, 1, "Enable FDMI support");
LPFC_ATTR_R(fdmi_on, 1, 0, 1, "Enable FDMI support");
/*
# Specifies the maximum number of ELS cmds we can have outstanding (for

21
drivers/scsi/scsi_lib.c
View File

@ -345,8 +345,7 @@ static void scsi_dec_host_busy(struct Scsi_Host *shost)
unsigned long flags;
rcu_read_lock();
if (!shost->use_blk_mq)
atomic_dec(&shost->host_busy);
atomic_dec(&shost->host_busy);
if (unlikely(scsi_host_in_recovery(shost))) {
spin_lock_irqsave(shost->host_lock, flags);
if (shost->host_failed || shost->host_eh_scheduled)
@ -445,12 +444,7 @@ static inline bool scsi_target_is_busy(struct scsi_target *starget)
static inline bool scsi_host_is_busy(struct Scsi_Host *shost)
{
/*
* blk-mq can handle host queue busy efficiently via host-wide driver
* tag allocation
*/
if (!shost->use_blk_mq && shost->can_queue > 0 &&
if (shost->can_queue > 0 &&
atomic_read(&shost->host_busy) >= shost->can_queue)
return true;
if (atomic_read(&shost->host_blocked) > 0)
@ -1606,10 +1600,7 @@ static inline int scsi_host_queue_ready(struct request_queue *q,
if (scsi_host_in_recovery(shost))
return 0;
if (!shost->use_blk_mq)
busy = atomic_inc_return(&shost->host_busy) - 1;
else
busy = 0;
busy = atomic_inc_return(&shost->host_busy) - 1;
if (atomic_read(&shost->host_blocked) > 0) {
if (busy)
goto starved;
@ -1625,7 +1616,7 @@ static inline int scsi_host_queue_ready(struct request_queue *q,
"unblocking host at zero depth\n"));
}
if (!shost->use_blk_mq && shost->can_queue > 0 && busy >= shost->can_queue)
if (shost->can_queue > 0 && busy >= shost->can_queue)
goto starved;
if (shost->host_self_blocked)
goto starved;
@ -1711,9 +1702,7 @@ static void scsi_kill_request(struct request *req, struct request_queue *q)
* with the locks as normal issue path does.
*/
atomic_inc(&sdev->device_busy);
if (!shost->use_blk_mq)
atomic_inc(&shost->host_busy);
atomic_inc(&shost->host_busy);
if (starget->can_queue > 0)
atomic_inc(&starget->target_busy);

8
drivers/target/iscsi/cxgbit/cxgbit_ddp.c
View File

@ -207,8 +207,8 @@ cxgbit_ddp_reserve(struct cxgbit_sock *csk, struct cxgbi_task_tag_info *ttinfo,
ret = dma_map_sg(&ppm->pdev->dev, sgl, sgcnt, DMA_FROM_DEVICE);
sgl->offset = sg_offset;
if (!ret) {
pr_info("%s: 0x%x, xfer %u, sgl %u dma mapping err.\n",
__func__, 0, xferlen, sgcnt);
pr_debug("%s: 0x%x, xfer %u, sgl %u dma mapping err.\n",
__func__, 0, xferlen, sgcnt);
goto rel_ppods;
}
@ -250,8 +250,8 @@ cxgbit_get_r2t_ttt(struct iscsi_conn *conn, struct iscsi_cmd *cmd,
ret = cxgbit_ddp_reserve(csk, ttinfo, cmd->se_cmd.data_length);
if (ret < 0) {
pr_info("csk 0x%p, cmd 0x%p, xfer len %u, sgcnt %u no ddp.\n",
csk, cmd, cmd->se_cmd.data_length, ttinfo->nents);
pr_debug("csk 0x%p, cmd 0x%p, xfer len %u, sgcnt %u no ddp.\n",
csk, cmd, cmd->se_cmd.data_length, ttinfo->nents);
ttinfo->sgl = NULL;
ttinfo->nents = 0;