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Commit e2a0a9d6 authored by James Smart's avatar James Smart Committed by James Bottomley
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[SCSI] lpfc 8.3.0 : Add BlockGuard support (T10-DIF) code 

Add SCSI data path, error handling, and debugfs code to complete
BlockGuard support.
Signed-off-by: default avatarJames Smart <James.Smart@emulex.com>
Signed-off-by: default avatarJames Bottomley <James.Bottomley@HansenPartnership.com>
parent 81301a9b
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Showing with 1026 additions and 17 deletions
drivers/scsi/lpfc/lpfc_debugfs.c
View file @ e2a0a9d6
...@@ -907,6 +907,91 @@ out: ...@@ -907,6 +907,91 @@ out:
return rc; return rc;
} }
static int
lpfc_debugfs_dumpData_open(struct inode *inode, struct file *file)
{
struct lpfc_debug *debug;
int rc = -ENOMEM;
if (!_dump_buf_data)
return -EBUSY;
debug = kmalloc(sizeof(*debug), GFP_KERNEL);
if (!debug)
goto out;
/* Round to page boundry */
printk(KERN_ERR "BLKGRD %s: _dump_buf_data=0x%p\n",
__func__, _dump_buf_data);
debug->buffer = _dump_buf_data;
if (!debug->buffer) {
kfree(debug);
goto out;
}
debug->len = (1 << _dump_buf_data_order) << PAGE_SHIFT;
file->private_data = debug;
rc = 0;
out:
return rc;
}
static int
lpfc_debugfs_dumpDif_open(struct inode *inode, struct file *file)
{
struct lpfc_debug *debug;
int rc = -ENOMEM;
if (!_dump_buf_dif)
return -EBUSY;
debug = kmalloc(sizeof(*debug), GFP_KERNEL);
if (!debug)
goto out;
/* Round to page boundry */
printk(KERN_ERR "BLKGRD %s: _dump_buf_dif=0x%p file=%s\n", __func__,
_dump_buf_dif, file->f_dentry->d_name.name);
debug->buffer = _dump_buf_dif;
if (!debug->buffer) {
kfree(debug);
goto out;
}
debug->len = (1 << _dump_buf_dif_order) << PAGE_SHIFT;
file->private_data = debug;
rc = 0;
out:
return rc;
}
static ssize_t
lpfc_debugfs_dumpDataDif_write(struct file *file, const char __user *buf,
size_t nbytes, loff_t *ppos)
{
/*
* The Data/DIF buffers only save one failing IO
* The write op is used as a reset mechanism after an IO has
* already been saved to the next one can be saved
*/
spin_lock(&_dump_buf_lock);
memset((void *)_dump_buf_data, 0,
((1 << PAGE_SHIFT) << _dump_buf_data_order));
memset((void *)_dump_buf_dif, 0,
((1 << PAGE_SHIFT) << _dump_buf_dif_order));
_dump_buf_done = 0;
spin_unlock(&_dump_buf_lock);
return nbytes;
}
/** /**
* lpfc_debugfs_nodelist_open - Open the nodelist debugfs file. * lpfc_debugfs_nodelist_open - Open the nodelist debugfs file.
* @inode: The inode pointer that contains a vport pointer. * @inode: The inode pointer that contains a vport pointer.
...@@ -1035,6 +1120,17 @@ lpfc_debugfs_release(struct inode *inode, struct file *file) ...@@ -1035,6 +1120,17 @@ lpfc_debugfs_release(struct inode *inode, struct file *file)
return 0; return 0;
} }
static int
lpfc_debugfs_dumpDataDif_release(struct inode *inode, struct file *file)
{
struct lpfc_debug *debug = file->private_data;
debug->buffer = NULL;
kfree(debug);
return 0;
}
#undef lpfc_debugfs_op_disc_trc #undef lpfc_debugfs_op_disc_trc
static struct file_operations lpfc_debugfs_op_disc_trc = { static struct file_operations lpfc_debugfs_op_disc_trc = {
.owner = THIS_MODULE, .owner = THIS_MODULE,
...@@ -1080,6 +1176,26 @@ static struct file_operations lpfc_debugfs_op_dumpHostSlim = { ...@@ -1080,6 +1176,26 @@ static struct file_operations lpfc_debugfs_op_dumpHostSlim = {
.release = lpfc_debugfs_release, .release = lpfc_debugfs_release,
}; };
#undef lpfc_debugfs_op_dumpData
static struct file_operations lpfc_debugfs_op_dumpData = {
.owner = THIS_MODULE,
.open = lpfc_debugfs_dumpData_open,
.llseek = lpfc_debugfs_lseek,
.read = lpfc_debugfs_read,
.write = lpfc_debugfs_dumpDataDif_write,
.release = lpfc_debugfs_dumpDataDif_release,
};
#undef lpfc_debugfs_op_dumpDif
static struct file_operations lpfc_debugfs_op_dumpDif = {
.owner = THIS_MODULE,
.open = lpfc_debugfs_dumpDif_open,
.llseek = lpfc_debugfs_lseek,
.read = lpfc_debugfs_read,
.write = lpfc_debugfs_dumpDataDif_write,
.release = lpfc_debugfs_dumpDataDif_release,
};
#undef lpfc_debugfs_op_slow_ring_trc #undef lpfc_debugfs_op_slow_ring_trc
static struct file_operations lpfc_debugfs_op_slow_ring_trc = { static struct file_operations lpfc_debugfs_op_slow_ring_trc = {
.owner = THIS_MODULE, .owner = THIS_MODULE,
...@@ -1176,6 +1292,32 @@ lpfc_debugfs_initialize(struct lpfc_vport *vport) ...@@ -1176,6 +1292,32 @@ lpfc_debugfs_initialize(struct lpfc_vport *vport)
goto debug_failed; goto debug_failed;
} }
/* Setup dumpData */
snprintf(name, sizeof(name), "dumpData");
phba->debug_dumpData =
debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
phba->hba_debugfs_root,
phba, &lpfc_debugfs_op_dumpData);
if (!phba->debug_dumpData) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
"0800 Cannot create debugfs dumpData\n");
goto debug_failed;
}
/* Setup dumpDif */
snprintf(name, sizeof(name), "dumpDif");
phba->debug_dumpDif =
debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
phba->hba_debugfs_root,
phba, &lpfc_debugfs_op_dumpDif);
if (!phba->debug_dumpDif) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
"0801 Cannot create debugfs dumpDif\n");
goto debug_failed;
}
/* Setup slow ring trace */ /* Setup slow ring trace */
if (lpfc_debugfs_max_slow_ring_trc) { if (lpfc_debugfs_max_slow_ring_trc) {
num = lpfc_debugfs_max_slow_ring_trc - 1; num = lpfc_debugfs_max_slow_ring_trc - 1;
...@@ -1340,6 +1482,16 @@ lpfc_debugfs_terminate(struct lpfc_vport *vport) ...@@ -1340,6 +1482,16 @@ lpfc_debugfs_terminate(struct lpfc_vport *vport)
debugfs_remove(phba->debug_dumpHostSlim); /* HostSlim */ debugfs_remove(phba->debug_dumpHostSlim); /* HostSlim */
phba->debug_dumpHostSlim = NULL; phba->debug_dumpHostSlim = NULL;
} }
if (phba->debug_dumpData) {
debugfs_remove(phba->debug_dumpData); /* dumpData */
phba->debug_dumpData = NULL;
}
if (phba->debug_dumpDif) {
debugfs_remove(phba->debug_dumpDif); /* dumpDif */
phba->debug_dumpDif = NULL;
}
if (phba->slow_ring_trc) { if (phba->slow_ring_trc) {
kfree(phba->slow_ring_trc); kfree(phba->slow_ring_trc);
phba->slow_ring_trc = NULL; phba->slow_ring_trc = NULL;
......
drivers/scsi/lpfc/lpfc_mbox.c
View file @ e2a0a9d6
...@@ -1099,6 +1099,8 @@ lpfc_config_port(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) ...@@ -1099,6 +1099,8 @@ lpfc_config_port(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
/* If HBA supports SLI=3 ask for it */ /* If HBA supports SLI=3 ask for it */
if (phba->sli_rev == 3 && phba->vpd.sli3Feat.cerbm) { if (phba->sli_rev == 3 && phba->vpd.sli3Feat.cerbm) {
if (phba->cfg_enable_bg)
mb->un.varCfgPort.cbg = 1; /* configure BlockGuard */
mb->un.varCfgPort.cerbm = 1; /* Request HBQs */ mb->un.varCfgPort.cerbm = 1; /* Request HBQs */
mb->un.varCfgPort.ccrp = 1; /* Command Ring Polling */ mb->un.varCfgPort.ccrp = 1; /* Command Ring Polling */
mb->un.varCfgPort.cinb = 1; /* Interrupt Notification Block */ mb->un.varCfgPort.cinb = 1; /* Interrupt Notification Block */
......
drivers/scsi/lpfc/lpfc_scsi.c
View file @ e2a0a9d6
...@@ -18,13 +18,14 @@ ...@@ -18,13 +18,14 @@
* more details, a copy of which can be found in the file COPYING * * more details, a copy of which can be found in the file COPYING *
* included with this package. * * included with this package. *
*******************************************************************/ *******************************************************************/
#include <linux/pci.h> #include <linux/pci.h>
#include <linux/interrupt.h> #include <linux/interrupt.h>
#include <linux/delay.h> #include <linux/delay.h>
#include <asm/unaligned.h>
#include <scsi/scsi.h> #include <scsi/scsi.h>
#include <scsi/scsi_device.h> #include <scsi/scsi_device.h>
#include <scsi/scsi_eh.h>
#include <scsi/scsi_host.h> #include <scsi/scsi_host.h>
#include <scsi/scsi_tcq.h> #include <scsi/scsi_tcq.h>
#include <scsi/scsi_transport_fc.h> #include <scsi/scsi_transport_fc.h>
...@@ -43,6 +44,73 @@ ...@@ -43,6 +44,73 @@
#define LPFC_RESET_WAIT 2 #define LPFC_RESET_WAIT 2
#define LPFC_ABORT_WAIT 2 #define LPFC_ABORT_WAIT 2
int _dump_buf_done;
static char *dif_op_str[] = {
"SCSI_PROT_NORMAL",
"SCSI_PROT_READ_INSERT",
"SCSI_PROT_WRITE_STRIP",
"SCSI_PROT_READ_STRIP",
"SCSI_PROT_WRITE_INSERT",
"SCSI_PROT_READ_PASS",
"SCSI_PROT_WRITE_PASS",
"SCSI_PROT_READ_CONVERT",
"SCSI_PROT_WRITE_CONVERT"
};
static void
lpfc_debug_save_data(struct scsi_cmnd *cmnd)
{
void *src, *dst;
struct scatterlist *sgde = scsi_sglist(cmnd);
if (!_dump_buf_data) {
printk(KERN_ERR "BLKGRD ERROR %s _dump_buf_data is NULL\n",
__func__);
return;
}
if (!sgde) {
printk(KERN_ERR "BLKGRD ERROR: data scatterlist is null\n");
return;
}
dst = (void *) _dump_buf_data;
while (sgde) {
src = sg_virt(sgde);
memcpy(dst, src, sgde->length);
dst += sgde->length;
sgde = sg_next(sgde);
}
}
static void
lpfc_debug_save_dif(struct scsi_cmnd *cmnd)
{
void *src, *dst;
struct scatterlist *sgde = scsi_prot_sglist(cmnd);
if (!_dump_buf_dif) {
printk(KERN_ERR "BLKGRD ERROR %s _dump_buf_data is NULL\n",
__func__);
return;
}
if (!sgde) {
printk(KERN_ERR "BLKGRD ERROR: prot scatterlist is null\n");
return;
}
dst = _dump_buf_dif;
while (sgde) {
src = sg_virt(sgde);
memcpy(dst, src, sgde->length);
dst += sgde->length;
sgde = sg_next(sgde);
}
}
/** /**
* lpfc_update_stats: Update statistical data for the command completion. * lpfc_update_stats: Update statistical data for the command completion.
* @phba: Pointer to HBA object. * @phba: Pointer to HBA object.
...@@ -463,7 +531,8 @@ lpfc_new_scsi_buf(struct lpfc_vport *vport) ...@@ -463,7 +531,8 @@ lpfc_new_scsi_buf(struct lpfc_vport *vport)
*/ */
iocb = &psb->cur_iocbq.iocb; iocb = &psb->cur_iocbq.iocb;
iocb->un.fcpi64.bdl.ulpIoTag32 = 0; iocb->un.fcpi64.bdl.ulpIoTag32 = 0;
if (phba->sli_rev == 3) { if ((phba->sli_rev == 3) &&
!(phba->sli3_options & LPFC_SLI3_BG_ENABLED)) {
/* fill in immediate fcp command BDE */ /* fill in immediate fcp command BDE */
iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BDE_IMMED; iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BDE_IMMED;
iocb->un.fcpi64.bdl.bdeSize = sizeof(struct fcp_cmnd); iocb->un.fcpi64.bdl.bdeSize = sizeof(struct fcp_cmnd);
...@@ -516,6 +585,7 @@ lpfc_get_scsi_buf(struct lpfc_hba * phba) ...@@ -516,6 +585,7 @@ lpfc_get_scsi_buf(struct lpfc_hba * phba)
if (lpfc_cmd) { if (lpfc_cmd) {
lpfc_cmd->seg_cnt = 0; lpfc_cmd->seg_cnt = 0;
lpfc_cmd->nonsg_phys = 0; lpfc_cmd->nonsg_phys = 0;
lpfc_cmd->prot_seg_cnt = 0;
} }
spin_unlock_irqrestore(&phba->scsi_buf_list_lock, iflag); spin_unlock_irqrestore(&phba->scsi_buf_list_lock, iflag);
return lpfc_cmd; return lpfc_cmd;
...@@ -590,7 +660,7 @@ lpfc_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd) ...@@ -590,7 +660,7 @@ lpfc_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd)
lpfc_cmd->seg_cnt = nseg; lpfc_cmd->seg_cnt = nseg;
if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) { if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) {
printk(KERN_ERR "%s: Too many sg segments from " printk(KERN_ERR "%s: Too many sg segments from "
"dma_map_sg. Config %d, seg_cnt %d", "dma_map_sg. Config %d, seg_cnt %d\n",
__func__, phba->cfg_sg_seg_cnt, __func__, phba->cfg_sg_seg_cnt,
lpfc_cmd->seg_cnt); lpfc_cmd->seg_cnt);
scsi_dma_unmap(scsi_cmnd); scsi_dma_unmap(scsi_cmnd);
...@@ -609,6 +679,7 @@ lpfc_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd) ...@@ -609,6 +679,7 @@ lpfc_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd)
scsi_for_each_sg(scsi_cmnd, sgel, nseg, num_bde) { scsi_for_each_sg(scsi_cmnd, sgel, nseg, num_bde) {
physaddr = sg_dma_address(sgel); physaddr = sg_dma_address(sgel);
if (phba->sli_rev == 3 && if (phba->sli_rev == 3 &&
!(phba->sli3_options & LPFC_SLI3_BG_ENABLED) &&
nseg <= LPFC_EXT_DATA_BDE_COUNT) { nseg <= LPFC_EXT_DATA_BDE_COUNT) {
data_bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64; data_bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
data_bde->tus.f.bdeSize = sg_dma_len(sgel); data_bde->tus.f.bdeSize = sg_dma_len(sgel);
...@@ -634,7 +705,8 @@ lpfc_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd) ...@@ -634,7 +705,8 @@ lpfc_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd)
* explicitly reinitialized and for SLI-3 the extended bde count is * explicitly reinitialized and for SLI-3 the extended bde count is
* explicitly reinitialized since all iocb memory resources are reused. * explicitly reinitialized since all iocb memory resources are reused.
*/ */
if (phba->sli_rev == 3) { if (phba->sli_rev == 3 &&
!(phba->sli3_options & LPFC_SLI3_BG_ENABLED)) {
if (num_bde > LPFC_EXT_DATA_BDE_COUNT) { if (num_bde > LPFC_EXT_DATA_BDE_COUNT) {
/* /*
* The extended IOCB format can only fit 3 BDE or a BPL. * The extended IOCB format can only fit 3 BDE or a BPL.
...@@ -661,9 +733,685 @@ lpfc_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd) ...@@ -661,9 +733,685 @@ lpfc_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd)
((num_bde + 2) * sizeof(struct ulp_bde64)); ((num_bde + 2) * sizeof(struct ulp_bde64));
} }
fcp_cmnd->fcpDl = cpu_to_be32(scsi_bufflen(scsi_cmnd)); fcp_cmnd->fcpDl = cpu_to_be32(scsi_bufflen(scsi_cmnd));
/*
* Due to difference in data length between DIF/non-DIF paths,
* we need to set word 4 of IOCB here
*/
iocb_cmd->un.fcpi.fcpi_parm = le32_to_cpu(scsi_bufflen(scsi_cmnd));
return 0; return 0;
} }
/*
* Given a scsi cmnd, determine the BlockGuard profile to be used
* with the cmd
*/
static int
lpfc_sc_to_sli_prof(struct scsi_cmnd *sc)
{
uint8_t guard_type = scsi_host_get_guard(sc->device->host);
uint8_t ret_prof = LPFC_PROF_INVALID;
if (guard_type == SHOST_DIX_GUARD_IP) {
switch (scsi_get_prot_op(sc)) {
case SCSI_PROT_READ_INSERT:
case SCSI_PROT_WRITE_STRIP:
ret_prof = LPFC_PROF_AST2;
break;
case SCSI_PROT_READ_STRIP:
case SCSI_PROT_WRITE_INSERT:
ret_prof = LPFC_PROF_A1;
break;
case SCSI_PROT_READ_CONVERT:
case SCSI_PROT_WRITE_CONVERT:
ret_prof = LPFC_PROF_AST1;
break;
case SCSI_PROT_READ_PASS:
case SCSI_PROT_WRITE_PASS:
case SCSI_PROT_NORMAL:
default:
printk(KERN_ERR "Bad op/guard:%d/%d combination\n",
scsi_get_prot_op(sc), guard_type);
break;
}
} else if (guard_type == SHOST_DIX_GUARD_CRC) {
switch (scsi_get_prot_op(sc)) {
case SCSI_PROT_READ_STRIP:
case SCSI_PROT_WRITE_INSERT:
ret_prof = LPFC_PROF_A1;
break;
case SCSI_PROT_READ_PASS:
case SCSI_PROT_WRITE_PASS:
ret_prof = LPFC_PROF_C1;
break;
case SCSI_PROT_READ_CONVERT:
case SCSI_PROT_WRITE_CONVERT:
case SCSI_PROT_READ_INSERT:
case SCSI_PROT_WRITE_STRIP:
case SCSI_PROT_NORMAL:
default:
printk(KERN_ERR "Bad op/guard:%d/%d combination\n",
scsi_get_prot_op(sc), guard_type);
break;
}
} else {
/* unsupported format */
BUG();
}
return ret_prof;
}
struct scsi_dif_tuple {
__be16 guard_tag; /* Checksum */
__be16 app_tag; /* Opaque storage */
__be32 ref_tag; /* Target LBA or indirect LBA */
};
static inline unsigned
lpfc_cmd_blksize(struct scsi_cmnd *sc)
{
return sc->device->sector_size;
}
/**
* lpfc_get_cmd_dif_parms - Extract DIF parameters from SCSI command
* @sc: in: SCSI command
* @apptagmask out: app tag mask
* @apptagval out: app tag value
* @reftag out: ref tag (reference tag)
*
* Description:
* Extract DIF paramters from the command if possible. Otherwise,
* use default paratmers.
*
**/
static inline void
lpfc_get_cmd_dif_parms(struct scsi_cmnd *sc, uint16_t *apptagmask,
uint16_t *apptagval, uint32_t *reftag)
{
struct scsi_dif_tuple *spt;
unsigned char op = scsi_get_prot_op(sc);
unsigned int protcnt = scsi_prot_sg_count(sc);
static int cnt;
if (protcnt && (op == SCSI_PROT_WRITE_STRIP ||
op == SCSI_PROT_WRITE_PASS ||
op == SCSI_PROT_WRITE_CONVERT)) {
cnt++;
spt = page_address(sg_page(scsi_prot_sglist(sc))) +
scsi_prot_sglist(sc)[0].offset;
*apptagmask = 0;
*apptagval = 0;
*reftag = cpu_to_be32(spt->ref_tag);
} else {
/* SBC defines ref tag to be lower 32bits of LBA */
*reftag = (uint32_t) (0xffffffff & scsi_get_lba(sc));
*apptagmask = 0;
*apptagval = 0;
}
}
/*
* This function sets up buffer list for protection groups of
* type LPFC_PG_TYPE_NO_DIF
*
* This is usually used when the HBA is instructed to generate
* DIFs and insert them into data stream (or strip DIF from
* incoming data stream)
*
* The buffer list consists of just one protection group described
* below:
* +-------------------------+
* start of prot group --> | PDE_1 |
* +-------------------------+
* | Data BDE |
* +-------------------------+
* |more Data BDE's ... (opt)|
* +-------------------------+
*
* @sc: pointer to scsi command we're working on
* @bpl: pointer to buffer list for protection groups
* @datacnt: number of segments of data that have been dma mapped
*
* Note: Data s/g buffers have been dma mapped
*/
static int
lpfc_bg_setup_bpl(struct lpfc_hba *phba, struct scsi_cmnd *sc,
struct ulp_bde64 *bpl, int datasegcnt)
{
struct scatterlist *sgde = NULL; /* s/g data entry */
struct lpfc_pde *pde1 = NULL;
dma_addr_t physaddr;
int i = 0, num_bde = 0;
int datadir = sc->sc_data_direction;
int prof = LPFC_PROF_INVALID;
unsigned blksize;
uint32_t reftag;
uint16_t apptagmask, apptagval;
pde1 = (struct lpfc_pde *) bpl;
prof = lpfc_sc_to_sli_prof(sc);
if (prof == LPFC_PROF_INVALID)
goto out;
/* extract some info from the scsi command for PDE1*/
blksize = lpfc_cmd_blksize(sc);
lpfc_get_cmd_dif_parms(sc, &apptagmask, &apptagval, &reftag);
/* setup PDE1 with what we have */
lpfc_pde_set_bg_parms(pde1, LPFC_PDE1_DESCRIPTOR, prof, blksize,
BG_EC_STOP_ERR);
lpfc_pde_set_dif_parms(pde1, apptagmask, apptagval, reftag);
num_bde++;
bpl++;
/* assumption: caller has already run dma_map_sg on command data */
scsi_for_each_sg(sc, sgde, datasegcnt, i) {
physaddr = sg_dma_address(sgde);
bpl->addrLow = le32_to_cpu(putPaddrLow(physaddr));
bpl->addrHigh = le32_to_cpu(putPaddrHigh(physaddr));
bpl->tus.f.bdeSize = sg_dma_len(sgde);
if (datadir == DMA_TO_DEVICE)
bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
else
bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I;
bpl->tus.w = le32_to_cpu(bpl->tus.w);
bpl++;
num_bde++;
}
out:
return num_bde;
}
/*
* This function sets up buffer list for protection groups of
* type LPFC_PG_TYPE_DIF_BUF
*
* This is usually used when DIFs are in their own buffers,
* separate from the data. The HBA can then by instructed
* to place the DIFs in the outgoing stream. For read operations,
* The HBA could extract the DIFs and place it in DIF buffers.
*
* The buffer list for this type consists of one or more of the
* protection groups described below:
* +-------------------------+
* start of first prot group --> | PDE_1 |
* +-------------------------+
* | PDE_3 (Prot BDE) |
* +-------------------------+
* | Data BDE |
* +-------------------------+
* |more Data BDE's ... (opt)|
* +-------------------------+
* start of new prot group --> | PDE_1 |
* +-------------------------+
* | ... |
* +-------------------------+
*
* @sc: pointer to scsi command we're working on
* @bpl: pointer to buffer list for protection groups
* @datacnt: number of segments of data that have been dma mapped
* @protcnt: number of segment of protection data that have been dma mapped
*
* Note: It is assumed that both data and protection s/g buffers have been
* mapped for DMA
*/
static int
lpfc_bg_setup_bpl_prot(struct lpfc_hba *phba, struct scsi_cmnd *sc,
struct ulp_bde64 *bpl, int datacnt, int protcnt)
{
struct scatterlist *sgde = NULL; /* s/g data entry */
struct scatterlist *sgpe = NULL; /* s/g prot entry */
struct lpfc_pde *pde1 = NULL;
struct ulp_bde64 *prot_bde = NULL;
dma_addr_t dataphysaddr, protphysaddr;
unsigned short curr_data = 0, curr_prot = 0;
unsigned int split_offset, protgroup_len;
unsigned int protgrp_blks, protgrp_bytes;
unsigned int remainder, subtotal;
int prof = LPFC_PROF_INVALID;
int datadir = sc->sc_data_direction;
unsigned char pgdone = 0, alldone = 0;
unsigned blksize;
uint32_t reftag;
uint16_t apptagmask, apptagval;
int num_bde = 0;
sgpe = scsi_prot_sglist(sc);
sgde = scsi_sglist(sc);
if (!sgpe || !sgde) {
lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
"9020 Invalid s/g entry: data=0x%p prot=0x%p\n",
sgpe, sgde);
return 0;
}
prof = lpfc_sc_to_sli_prof(sc);
if (prof == LPFC_PROF_INVALID)
goto out;
/* extract some info from the scsi command for PDE1*/
blksize = lpfc_cmd_blksize(sc);
lpfc_get_cmd_dif_parms(sc, &apptagmask, &apptagval, &reftag);
split_offset = 0;
do {
/* setup the first PDE_1 */
pde1 = (struct lpfc_pde *) bpl;
lpfc_pde_set_bg_parms(pde1, LPFC_PDE1_DESCRIPTOR, prof, blksize,
BG_EC_STOP_ERR);
lpfc_pde_set_dif_parms(pde1, apptagmask, apptagval, reftag);
num_bde++;
bpl++;
/* setup the first BDE that points to protection buffer */
prot_bde = (struct ulp_bde64 *) bpl;
protphysaddr = sg_dma_address(sgpe);
prot_bde->addrLow = le32_to_cpu(putPaddrLow(protphysaddr));
prot_bde->addrHigh = le32_to_cpu(putPaddrHigh(protphysaddr));
protgroup_len = sg_dma_len(sgpe);
/* must be integer multiple of the DIF block length */
BUG_ON(protgroup_len % 8);
protgrp_blks = protgroup_len / 8;
protgrp_bytes = protgrp_blks * blksize;
prot_bde->tus.f.bdeSize = protgroup_len;
if (datadir == DMA_TO_DEVICE)
prot_bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
else
prot_bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64I;
prot_bde->tus.w = le32_to_cpu(bpl->tus.w);
curr_prot++;
num_bde++;
/* setup BDE's for data blocks associated with DIF data */
pgdone = 0;
subtotal = 0; /* total bytes processed for current prot grp */
while (!pgdone) {
if (!sgde) {
printk(KERN_ERR "%s Invalid data segment\n",
__func__);
return 0;
}
bpl++;
dataphysaddr = sg_dma_address(sgde) + split_offset;
bpl->addrLow = le32_to_cpu(putPaddrLow(dataphysaddr));
bpl->addrHigh = le32_to_cpu(putPaddrHigh(dataphysaddr));
remainder = sg_dma_len(sgde) - split_offset;
if ((subtotal + remainder) <= protgrp_bytes) {
/* we can use this whole buffer */
bpl->tus.f.bdeSize = remainder;
split_offset = 0;
if ((subtotal + remainder) == protgrp_bytes)
pgdone = 1;
} else {
/* must split this buffer with next prot grp */
bpl->tus.f.bdeSize = protgrp_bytes - subtotal;
split_offset += bpl->tus.f.bdeSize;
}
subtotal += bpl->tus.f.bdeSize;
if (datadir == DMA_TO_DEVICE)
bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
else
bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I;
bpl->tus.w = le32_to_cpu(bpl->tus.w);
num_bde++;
curr_data++;
if (split_offset)
break;
/* Move to the next s/g segment if possible */
sgde = sg_next(sgde);
}
/* are we done ? */
if (curr_prot == protcnt) {
alldone = 1;
} else if (curr_prot < protcnt) {
/* advance to next prot buffer */
sgpe = sg_next(sgpe);
bpl++;
/* update the reference tag */
reftag += protgrp_blks;
} else {
/* if we're here, we have a bug */
printk(KERN_ERR "BLKGRD: bug in %s\n", __func__);
}
} while (!alldone);
out:
return num_bde;
}
/*
* Given a SCSI command that supports DIF, determine composition of protection
* groups involved in setting up buffer lists
*
* Returns:
* for DIF (for both read and write)
* */
static int
lpfc_prot_group_type(struct lpfc_hba *phba, struct scsi_cmnd *sc)
{
int ret = LPFC_PG_TYPE_INVALID;
unsigned char op = scsi_get_prot_op(sc);
switch (op) {
case SCSI_PROT_READ_STRIP:
case SCSI_PROT_WRITE_INSERT:
ret = LPFC_PG_TYPE_NO_DIF;
break;
case SCSI_PROT_READ_INSERT:
case SCSI_PROT_WRITE_STRIP:
case SCSI_PROT_READ_PASS:
case SCSI_PROT_WRITE_PASS:
case SCSI_PROT_WRITE_CONVERT:
case SCSI_PROT_READ_CONVERT:
ret = LPFC_PG_TYPE_DIF_BUF;
break;
default:
lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
"9021 Unsupported protection op:%d\n", op);
break;
}
return ret;
}
/*
* This is the protection/DIF aware version of
* lpfc_scsi_prep_dma_buf(). It may be a good idea to combine the
* two functions eventually, but for now, it's here
*/
static int
lpfc_bg_scsi_prep_dma_buf(struct lpfc_hba *phba,
struct lpfc_scsi_buf *lpfc_cmd)
{
struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd;
struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd;
struct ulp_bde64 *bpl = lpfc_cmd->fcp_bpl;
IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb;
uint32_t num_bde = 0;
int datasegcnt, protsegcnt, datadir = scsi_cmnd->sc_data_direction;
int prot_group_type = 0;
int diflen, fcpdl;
unsigned blksize;
/*
* Start the lpfc command prep by bumping the bpl beyond fcp_cmnd
* fcp_rsp regions to the first data bde entry
*/
bpl += 2;
if (scsi_sg_count(scsi_cmnd)) {
/*
* The driver stores the segment count returned from pci_map_sg
* because this a count of dma-mappings used to map the use_sg
* pages. They are not guaranteed to be the same for those
* architectures that implement an IOMMU.
*/
datasegcnt = dma_map_sg(&phba->pcidev->dev,
scsi_sglist(scsi_cmnd),
scsi_sg_count(scsi_cmnd), datadir);
if (unlikely(!datasegcnt))
return 1;
lpfc_cmd->seg_cnt = datasegcnt;
if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) {
printk(KERN_ERR "%s: Too many sg segments from "
"dma_map_sg. Config %d, seg_cnt %d\n",
__func__, phba->cfg_sg_seg_cnt,
lpfc_cmd->seg_cnt);
scsi_dma_unmap(scsi_cmnd);
return 1;
}
prot_group_type = lpfc_prot_group_type(phba, scsi_cmnd);
switch (prot_group_type) {
case LPFC_PG_TYPE_NO_DIF:
num_bde = lpfc_bg_setup_bpl(phba, scsi_cmnd, bpl,
datasegcnt);
/* we shoud have 2 or more entries in buffer list */
if (num_bde < 2)
goto err;
break;
case LPFC_PG_TYPE_DIF_BUF:{
/*
* This type indicates that protection buffers are
* passed to the driver, so that needs to be prepared
* for DMA
*/
protsegcnt = dma_map_sg(&phba->pcidev->dev,
scsi_prot_sglist(scsi_cmnd),
scsi_prot_sg_count(scsi_cmnd), datadir);
if (unlikely(!protsegcnt)) {
scsi_dma_unmap(scsi_cmnd);
return 1;
}
lpfc_cmd->prot_seg_cnt = protsegcnt;
if (lpfc_cmd->prot_seg_cnt
> phba->cfg_prot_sg_seg_cnt) {
printk(KERN_ERR "%s: Too many prot sg segments "
"from dma_map_sg. Config %d,"
"prot_seg_cnt %d\n", __func__,
phba->cfg_prot_sg_seg_cnt,
lpfc_cmd->prot_seg_cnt);
dma_unmap_sg(&phba->pcidev->dev,
scsi_prot_sglist(scsi_cmnd),
scsi_prot_sg_count(scsi_cmnd),
datadir);
scsi_dma_unmap(scsi_cmnd);
return 1;
}
num_bde = lpfc_bg_setup_bpl_prot(phba, scsi_cmnd, bpl,
datasegcnt, protsegcnt);
/* we shoud have 3 or more entries in buffer list */
if (num_bde < 3)
goto err;
break;
}
case LPFC_PG_TYPE_INVALID:
default:
lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
"9022 Unexpected protection group %i\n",
prot_group_type);
return 1;
}
}
/*
* Finish initializing those IOCB fields that are dependent on the
* scsi_cmnd request_buffer. Note that the bdeSize is explicitly
* reinitialized since all iocb memory resources are used many times
* for transmit, receive, and continuation bpl's.
*/
iocb_cmd->un.fcpi64.bdl.bdeSize = (2 * sizeof(struct ulp_bde64));
iocb_cmd->un.fcpi64.bdl.bdeSize += (num_bde * sizeof(struct ulp_bde64));
iocb_cmd->ulpBdeCount = 1;
iocb_cmd->ulpLe = 1;
fcpdl = scsi_bufflen(scsi_cmnd);
if (scsi_get_prot_type(scsi_cmnd) == SCSI_PROT_DIF_TYPE1) {
/*
* We are in DIF Type 1 mode
* Every data block has a 8 byte DIF (trailer)
* attached to it. Must ajust FCP data length
*/
blksize = lpfc_cmd_blksize(scsi_cmnd);
diflen = (fcpdl / blksize) * 8;
fcpdl += diflen;
}
fcp_cmnd->fcpDl = be32_to_cpu(fcpdl);
/*
* Due to difference in data length between DIF/non-DIF paths,
* we need to set word 4 of IOCB here
*/
iocb_cmd->un.fcpi.fcpi_parm = fcpdl;
return 0;
err:
lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
"9023 Could not setup all needed BDE's"
"prot_group_type=%d, num_bde=%d\n",
prot_group_type, num_bde);
return 1;
}
/*
* This function checks for BlockGuard errors detected by
* the HBA. In case of errors, the ASC/ASCQ fields in the
* sense buffer will be set accordingly, paired with
* ILLEGAL_REQUEST to signal to the kernel that the HBA
* detected corruption.
*
* Returns:
* 0 - No error found
* 1 - BlockGuard error found
* -1 - Internal error (bad profile, ...etc)
*/
static int
lpfc_parse_bg_err(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd,
struct lpfc_iocbq *pIocbOut)
{
struct scsi_cmnd *cmd = lpfc_cmd->pCmd;
struct sli3_bg_fields *bgf = &pIocbOut->iocb.unsli3.sli3_bg;
int ret = 0;
uint32_t bghm = bgf->bghm;
uint32_t bgstat = bgf->bgstat;
uint64_t failing_sector = 0;
printk(KERN_ERR "BG ERROR in cmd 0x%x lba 0x%llx blk cnt 0x%lx "
"bgstat=0x%x bghm=0x%x\n",
cmd->cmnd[0], (u64)scsi_get_lba(cmd),
cmd->request->nr_sectors, bgstat, bghm);
spin_lock(&_dump_buf_lock);
if (!_dump_buf_done) {
printk(KERN_ERR "Saving Data for %u blocks to debugfs\n",
(cmd->cmnd[7] << 8 | cmd->cmnd[8]));
lpfc_debug_save_data(cmd);
/* If we have a prot sgl, save the DIF buffer */
if (lpfc_prot_group_type(phba, cmd) ==
LPFC_PG_TYPE_DIF_BUF) {
printk(KERN_ERR "Saving DIF for %u blocks to debugfs\n",
(cmd->cmnd[7] << 8 | cmd->cmnd[8]));
lpfc_debug_save_dif(cmd);
}
_dump_buf_done = 1;
}
spin_unlock(&_dump_buf_lock);
if (lpfc_bgs_get_invalid_prof(bgstat)) {
cmd->result = ScsiResult(DID_ERROR, 0);
printk(KERN_ERR "Invalid BlockGuard profile. bgstat:0x%x\n",
bgstat);
ret = (-1);
goto out;
}
if (lpfc_bgs_get_uninit_dif_block(bgstat)) {
cmd->result = ScsiResult(DID_ERROR, 0);
printk(KERN_ERR "Invalid BlockGuard DIF Block. bgstat:0x%x\n",
bgstat);
ret = (-1);
goto out;
}
if (lpfc_bgs_get_guard_err(bgstat)) {
ret = 1;
scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
0x10, 0x1);
cmd->result = (DRIVER_SENSE|SUGGEST_DIE) << 24
| ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION);
phba->bg_guard_err_cnt++;
printk(KERN_ERR "BLKGRD: guard_tag error\n");
}
if (lpfc_bgs_get_reftag_err(bgstat)) {
ret = 1;
scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
0x10, 0x3);
cmd->result = (DRIVER_SENSE|SUGGEST_DIE) << 24
| ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION);
phba->bg_reftag_err_cnt++;
printk(KERN_ERR "BLKGRD: ref_tag error\n");
}
if (lpfc_bgs_get_apptag_err(bgstat)) {
ret = 1;
scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
0x10, 0x2);
cmd->result = (DRIVER_SENSE|SUGGEST_DIE) << 24
| ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION);
phba->bg_apptag_err_cnt++;
printk(KERN_ERR "BLKGRD: app_tag error\n");
}
if (lpfc_bgs_get_hi_water_mark_present(bgstat)) {
/*
* setup sense data descriptor 0 per SPC-4 as an information
* field, and put the failing LBA in it
*/
cmd->sense_buffer[8] = 0; /* Information */
cmd->sense_buffer[9] = 0xa; /* Add. length */
do_div(bghm, cmd->device->sector_size);
failing_sector = scsi_get_lba(cmd);
failing_sector += bghm;
put_unaligned_be64(failing_sector, &cmd->sense_buffer[10]);
}
if (!ret) {
/* No error was reported - problem in FW? */
cmd->result = ScsiResult(DID_ERROR, 0);
printk(KERN_ERR "BLKGRD: no errors reported!\n");
}
out:
return ret;
}
/** /**
* lpfc_send_scsi_error_event: Posts an event when there is SCSI error. * lpfc_send_scsi_error_event: Posts an event when there is SCSI error.
* @phba: Pointer to hba context object. * @phba: Pointer to hba context object.
...@@ -775,6 +1523,10 @@ lpfc_scsi_unprep_dma_buf(struct lpfc_hba * phba, struct lpfc_scsi_buf * psb) ...@@ -775,6 +1523,10 @@ lpfc_scsi_unprep_dma_buf(struct lpfc_hba * phba, struct lpfc_scsi_buf * psb)
*/ */
if (psb->seg_cnt > 0) if (psb->seg_cnt > 0)
scsi_dma_unmap(psb->pCmd); scsi_dma_unmap(psb->pCmd);
if (psb->prot_seg_cnt > 0)
dma_unmap_sg(&phba->pcidev->dev, scsi_prot_sglist(psb->pCmd),
scsi_prot_sg_count(psb->pCmd),
psb->pCmd->sc_data_direction);
} }
/** /**
...@@ -828,7 +1580,7 @@ lpfc_handle_fcp_err(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd, ...@@ -828,7 +1580,7 @@ lpfc_handle_fcp_err(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd,
logit = LOG_FCP; logit = LOG_FCP;
lpfc_printf_vlog(vport, KERN_WARNING, logit, lpfc_printf_vlog(vport, KERN_WARNING, logit,
"0730 FCP command x%x failed: x%x SNS x%x x%x " "9024 FCP command x%x failed: x%x SNS x%x x%x "
"Data: x%x x%x x%x x%x x%x\n", "Data: x%x x%x x%x x%x x%x\n",
cmnd->cmnd[0], scsi_status, cmnd->cmnd[0], scsi_status,
be32_to_cpu(*lp), be32_to_cpu(*(lp + 3)), resp_info, be32_to_cpu(*lp), be32_to_cpu(*(lp + 3)), resp_info,
...@@ -851,7 +1603,7 @@ lpfc_handle_fcp_err(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd, ...@@ -851,7 +1603,7 @@ lpfc_handle_fcp_err(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd,
scsi_set_resid(cmnd, be32_to_cpu(fcprsp->rspResId)); scsi_set_resid(cmnd, be32_to_cpu(fcprsp->rspResId));
lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
"0716 FCP Read Underrun, expected %d, " "9025 FCP Read Underrun, expected %d, "
"residual %d Data: x%x x%x x%x\n", "residual %d Data: x%x x%x x%x\n",
be32_to_cpu(fcpcmd->fcpDl), be32_to_cpu(fcpcmd->fcpDl),
scsi_get_resid(cmnd), fcpi_parm, cmnd->cmnd[0], scsi_get_resid(cmnd), fcpi_parm, cmnd->cmnd[0],
...@@ -867,7 +1619,7 @@ lpfc_handle_fcp_err(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd, ...@@ -867,7 +1619,7 @@ lpfc_handle_fcp_err(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd,
(scsi_get_resid(cmnd) != fcpi_parm)) { (scsi_get_resid(cmnd) != fcpi_parm)) {
lpfc_printf_vlog(vport, KERN_WARNING, lpfc_printf_vlog(vport, KERN_WARNING,
LOG_FCP | LOG_FCP_ERROR, LOG_FCP | LOG_FCP_ERROR,
"0735 FCP Read Check Error " "9026 FCP Read Check Error "
"and Underrun Data: x%x x%x x%x x%x\n", "and Underrun Data: x%x x%x x%x x%x\n",
be32_to_cpu(fcpcmd->fcpDl), be32_to_cpu(fcpcmd->fcpDl),
scsi_get_resid(cmnd), fcpi_parm, scsi_get_resid(cmnd), fcpi_parm,
...@@ -886,7 +1638,7 @@ lpfc_handle_fcp_err(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd, ...@@ -886,7 +1638,7 @@ lpfc_handle_fcp_err(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd,
(scsi_bufflen(cmnd) - scsi_get_resid(cmnd) (scsi_bufflen(cmnd) - scsi_get_resid(cmnd)
< cmnd->underflow)) { < cmnd->underflow)) {
lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
"0717 FCP command x%x residual " "9027 FCP command x%x residual "
"underrun converted to error " "underrun converted to error "
"Data: x%x x%x x%x\n", "Data: x%x x%x x%x\n",
cmnd->cmnd[0], scsi_bufflen(cmnd), cmnd->cmnd[0], scsi_bufflen(cmnd),
...@@ -895,7 +1647,7 @@ lpfc_handle_fcp_err(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd, ...@@ -895,7 +1647,7 @@ lpfc_handle_fcp_err(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd,
} }
} else if (resp_info & RESID_OVER) { } else if (resp_info & RESID_OVER) {
lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
"0720 FCP command x%x residual overrun error. " "9028 FCP command x%x residual overrun error. "
"Data: x%x x%x \n", cmnd->cmnd[0], "Data: x%x x%x \n", cmnd->cmnd[0],
scsi_bufflen(cmnd), scsi_get_resid(cmnd)); scsi_bufflen(cmnd), scsi_get_resid(cmnd));
host_status = DID_ERROR; host_status = DID_ERROR;
...@@ -907,7 +1659,7 @@ lpfc_handle_fcp_err(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd, ...@@ -907,7 +1659,7 @@ lpfc_handle_fcp_err(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd,
} else if ((scsi_status == SAM_STAT_GOOD) && fcpi_parm && } else if ((scsi_status == SAM_STAT_GOOD) && fcpi_parm &&
(cmnd->sc_data_direction == DMA_FROM_DEVICE)) { (cmnd->sc_data_direction == DMA_FROM_DEVICE)) {
lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP | LOG_FCP_ERROR, lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP | LOG_FCP_ERROR,
"0734 FCP Read Check Error Data: " "9029 FCP Read Check Error Data: "
"x%x x%x x%x x%x\n", "x%x x%x x%x x%x\n",
be32_to_cpu(fcpcmd->fcpDl), be32_to_cpu(fcpcmd->fcpDl),
be32_to_cpu(fcprsp->rspResId), be32_to_cpu(fcprsp->rspResId),
...@@ -960,7 +1712,7 @@ lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn, ...@@ -960,7 +1712,7 @@ lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn,
lpfc_cmd->status = IOSTAT_DEFAULT; lpfc_cmd->status = IOSTAT_DEFAULT;
lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
"0729 FCP cmd x%x failed <%d/%d> " "9030 FCP cmd x%x failed <%d/%d> "
"status: x%x result: x%x Data: x%x x%x\n", "status: x%x result: x%x Data: x%x x%x\n",
cmd->cmnd[0], cmd->cmnd[0],
cmd->device ? cmd->device->id : 0xffff, cmd->device ? cmd->device->id : 0xffff,
...@@ -1008,7 +1760,28 @@ lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn, ...@@ -1008,7 +1760,28 @@ lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn,
lpfc_cmd->result == IOERR_ABORT_REQUESTED) { lpfc_cmd->result == IOERR_ABORT_REQUESTED) {
cmd->result = ScsiResult(DID_REQUEUE, 0); cmd->result = ScsiResult(DID_REQUEUE, 0);
break; break;
} /* else: fall through */ }
if ((lpfc_cmd->result == IOERR_RX_DMA_FAILED ||
lpfc_cmd->result == IOERR_TX_DMA_FAILED) &&
pIocbOut->iocb.unsli3.sli3_bg.bgstat) {
if (scsi_get_prot_op(cmd) != SCSI_PROT_NORMAL) {
/*
* This is a response for a BG enabled
* cmd. Parse BG error
*/
lpfc_parse_bg_err(phba, lpfc_cmd,
pIocbOut);
break;
} else {
lpfc_printf_vlog(vport, KERN_WARNING,
LOG_BG,
"9031 non-zero BGSTAT "
"on unprotected cmd");
}
}
/* else: fall through */
default: default:
cmd->result = ScsiResult(DID_ERROR, 0); cmd->result = ScsiResult(DID_ERROR, 0);
break; break;
...@@ -1243,7 +2016,6 @@ lpfc_scsi_prep_cmnd(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd, ...@@ -1243,7 +2016,6 @@ lpfc_scsi_prep_cmnd(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd,
} else { } else {
iocb_cmd->ulpCommand = CMD_FCP_IREAD64_CR; iocb_cmd->ulpCommand = CMD_FCP_IREAD64_CR;
iocb_cmd->ulpPU = PARM_READ_CHECK; iocb_cmd->ulpPU = PARM_READ_CHECK;
iocb_cmd->un.fcpi.fcpi_parm = scsi_bufflen(scsi_cmnd);
fcp_cmnd->fcpCntl3 = READ_DATA; fcp_cmnd->fcpCntl3 = READ_DATA;
phba->fc4InputRequests++; phba->fc4InputRequests++;
} }
...@@ -1254,7 +2026,8 @@ lpfc_scsi_prep_cmnd(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd, ...@@ -1254,7 +2026,8 @@ lpfc_scsi_prep_cmnd(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd,
fcp_cmnd->fcpCntl3 = 0; fcp_cmnd->fcpCntl3 = 0;
phba->fc4ControlRequests++; phba->fc4ControlRequests++;
} }
if (phba->sli_rev == 3) if (phba->sli_rev == 3 &&
!(phba->sli3_options & LPFC_SLI3_BG_ENABLED))
lpfc_fcpcmd_to_iocb(iocb_cmd->unsli3.fcp_ext.icd, fcp_cmnd); lpfc_fcpcmd_to_iocb(iocb_cmd->unsli3.fcp_ext.icd, fcp_cmnd);
/* /*
* Finish initializing those IOCB fields that are independent * Finish initializing those IOCB fields that are independent
...@@ -1312,7 +2085,8 @@ lpfc_scsi_prep_task_mgmt_cmd(struct lpfc_vport *vport, ...@@ -1312,7 +2085,8 @@ lpfc_scsi_prep_task_mgmt_cmd(struct lpfc_vport *vport,
memset(fcp_cmnd, 0, sizeof(struct fcp_cmnd)); memset(fcp_cmnd, 0, sizeof(struct fcp_cmnd));
int_to_scsilun(lun, &fcp_cmnd->fcp_lun); int_to_scsilun(lun, &fcp_cmnd->fcp_lun);
fcp_cmnd->fcpCntl2 = task_mgmt_cmd; fcp_cmnd->fcpCntl2 = task_mgmt_cmd;
if (vport->phba->sli_rev == 3) if (vport->phba->sli_rev == 3 &&
!(vport->phba->sli3_options & LPFC_SLI3_BG_ENABLED))
lpfc_fcpcmd_to_iocb(piocb->unsli3.fcp_ext.icd, fcp_cmnd); lpfc_fcpcmd_to_iocb(piocb->unsli3.fcp_ext.icd, fcp_cmnd);
piocb->ulpCommand = CMD_FCP_ICMND64_CR; piocb->ulpCommand = CMD_FCP_ICMND64_CR;
piocb->ulpContext = ndlp->nlp_rpi; piocb->ulpContext = ndlp->nlp_rpi;
...@@ -1541,6 +2315,17 @@ lpfc_queuecommand(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *)) ...@@ -1541,6 +2315,17 @@ lpfc_queuecommand(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *))
goto out_fail_command; goto out_fail_command;
} }
if (!(phba->sli3_options & LPFC_SLI3_BG_ENABLED) &&
scsi_get_prot_op(cmnd) != SCSI_PROT_NORMAL) {
printk(KERN_ERR "BLKGRD ERROR: rcvd protected cmd:%02x op:%02x "
"str=%s without registering for BlockGuard - "
"Rejecting command\n",
cmnd->cmnd[0], scsi_get_prot_op(cmnd),
dif_op_str[scsi_get_prot_op(cmnd)]);
goto out_fail_command;
}
/* /*
* Catch race where our node has transitioned, but the * Catch race where our node has transitioned, but the
* transport is still transitioning. * transport is still transitioning.
...@@ -1574,7 +2359,64 @@ lpfc_queuecommand(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *)) ...@@ -1574,7 +2359,64 @@ lpfc_queuecommand(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *))
cmnd->host_scribble = (unsigned char *)lpfc_cmd; cmnd->host_scribble = (unsigned char *)lpfc_cmd;
cmnd->scsi_done = done; cmnd->scsi_done = done;
err = lpfc_scsi_prep_dma_buf(phba, lpfc_cmd); if (scsi_get_prot_op(cmnd) != SCSI_PROT_NORMAL) {
lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG,
"9033 BLKGRD: rcvd protected cmd:%02x op:%02x "
"str=%s\n",
cmnd->cmnd[0], scsi_get_prot_op(cmnd),
dif_op_str[scsi_get_prot_op(cmnd)]);
lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG,
"9034 BLKGRD: CDB: %02x %02x %02x %02x %02x "
"%02x %02x %02x %02x %02x \n",
cmnd->cmnd[0], cmnd->cmnd[1], cmnd->cmnd[2],
cmnd->cmnd[3], cmnd->cmnd[4], cmnd->cmnd[5],
cmnd->cmnd[6], cmnd->cmnd[7], cmnd->cmnd[8],
cmnd->cmnd[9]);
if (cmnd->cmnd[0] == READ_10)
lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG,
"9035 BLKGRD: READ @ sector %llu, "
"count %lu\n",
(u64)scsi_get_lba(cmnd),
cmnd->request->nr_sectors);
else if (cmnd->cmnd[0] == WRITE_10)
lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG,
"9036 BLKGRD: WRITE @ sector %llu, "
"count %lu cmd=%p\n",
(u64)scsi_get_lba(cmnd),
cmnd->request->nr_sectors,
cmnd);
err = lpfc_bg_scsi_prep_dma_buf(phba, lpfc_cmd);
} else {
lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG,
"9038 BLKGRD: rcvd unprotected cmd:%02x op:%02x"
" str=%s\n",
cmnd->cmnd[0], scsi_get_prot_op(cmnd),
dif_op_str[scsi_get_prot_op(cmnd)]);
lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG,
"9039 BLKGRD: CDB: %02x %02x %02x %02x %02x "
"%02x %02x %02x %02x %02x \n",
cmnd->cmnd[0], cmnd->cmnd[1], cmnd->cmnd[2],
cmnd->cmnd[3], cmnd->cmnd[4], cmnd->cmnd[5],
cmnd->cmnd[6], cmnd->cmnd[7], cmnd->cmnd[8],
cmnd->cmnd[9]);
if (cmnd->cmnd[0] == READ_10)
lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG,
"9040 dbg: READ @ sector %llu, "
"count %lu\n", (u64)scsi_get_lba(cmnd),
cmnd->request->nr_sectors);
else if (cmnd->cmnd[0] == WRITE_10)
lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG,
"9041 dbg: WRITE @ sector %llu, "
"count %lu cmd=%p\n",
(u64)scsi_get_lba(cmnd),
cmnd->request->nr_sectors, cmnd);
else
lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG,
"9042 dbg: parser not implemented\n");
err = lpfc_scsi_prep_dma_buf(phba, lpfc_cmd);
}
if (err) if (err)
goto out_host_busy_free_buf; goto out_host_busy_free_buf;
......
drivers/scsi/lpfc/lpfc_scsi.h
View file @ e2a0a9d6
...@@ -124,6 +124,8 @@ struct lpfc_scsi_buf { ...@@ -124,6 +124,8 @@ struct lpfc_scsi_buf {
uint32_t seg_cnt; /* Number of scatter-gather segments returned by uint32_t seg_cnt; /* Number of scatter-gather segments returned by
* dma_map_sg. The driver needs this for calls * dma_map_sg. The driver needs this for calls
* to dma_unmap_sg. */ * to dma_unmap_sg. */
uint32_t prot_seg_cnt; /* seg_cnt's counterpart for protection data */
dma_addr_t nonsg_phys; /* Non scatter-gather physical address. */ dma_addr_t nonsg_phys; /* Non scatter-gather physical address. */
/* /*
......
drivers/scsi/lpfc/lpfc_sli.c
View file @ e2a0a9d6
...@@ -542,6 +542,7 @@ lpfc_sli_submit_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, ...@@ -542,6 +542,7 @@ lpfc_sli_submit_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
*/ */
nextiocb->iocb.ulpIoTag = (nextiocb->iocb_cmpl) ? nextiocb->iotag : 0; nextiocb->iocb.ulpIoTag = (nextiocb->iocb_cmpl) ? nextiocb->iotag : 0;
if (pring->ringno == LPFC_ELS_RING) { if (pring->ringno == LPFC_ELS_RING) {
lpfc_debugfs_slow_ring_trc(phba, lpfc_debugfs_slow_ring_trc(phba,
"IOCB cmd ring: wd4:x%08x wd6:x%08x wd7:x%08x", "IOCB cmd ring: wd4:x%08x wd6:x%08x wd7:x%08x",
...@@ -3044,7 +3045,8 @@ lpfc_sli_config_port(struct lpfc_hba *phba, int sli_mode) ...@@ -3044,7 +3045,8 @@ lpfc_sli_config_port(struct lpfc_hba *phba, int sli_mode)
phba->sli3_options &= ~(LPFC_SLI3_NPIV_ENABLED | phba->sli3_options &= ~(LPFC_SLI3_NPIV_ENABLED |
LPFC_SLI3_HBQ_ENABLED | LPFC_SLI3_HBQ_ENABLED |
LPFC_SLI3_CRP_ENABLED | LPFC_SLI3_CRP_ENABLED |
LPFC_SLI3_INB_ENABLED); LPFC_SLI3_INB_ENABLED |
LPFC_SLI3_BG_ENABLED);
if (rc != MBX_SUCCESS) { if (rc != MBX_SUCCESS) {
lpfc_printf_log(phba, KERN_ERR, LOG_INIT, lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"0442 Adapter failed to init, mbxCmd x%x " "0442 Adapter failed to init, mbxCmd x%x "
...@@ -3089,6 +3091,15 @@ lpfc_sli_config_port(struct lpfc_hba *phba, int sli_mode) ...@@ -3089,6 +3091,15 @@ lpfc_sli_config_port(struct lpfc_hba *phba, int sli_mode)
phba->inb_ha_copy = NULL; phba->inb_ha_copy = NULL;
phba->inb_counter = NULL; phba->inb_counter = NULL;
} }
if (phba->cfg_enable_bg) {
if (pmb->mb.un.varCfgPort.gbg)
phba->sli3_options |= LPFC_SLI3_BG_ENABLED;
else
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"0443 Adapter did not grant "
"BlockGuard\n");
}
} else { } else {
phba->hbq_get = NULL; phba->hbq_get = NULL;
phba->port_gp = phba->mbox->us.s2.port; phba->port_gp = phba->mbox->us.s2.port;
......
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