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soc/qman: Handle endianness of h/w descriptors

Browse source 
The hardware descriptors have big endian (BE) format.
Provide proper endianness handling for the remaining
descriptor fields, to ensure they are correctly
accessed by non-BE CPUs too.

Signed-off-by: Claudiu Manoil <[email protected]>
Signed-off-by: Scott Wood <[email protected]>
This commit is contained in:
Claudiu Manoil 2016-11-16 16:40:30 +02:00 • committed by Scott Wood
commit 1805882276
5 changed files with 70 additions and 62 deletions
Download patch file Download diff file Expand all files Collapse all files

65
drivers/soc/fsl/qbman/qman.c
View file

@ -140,10 +140,10 @@ enum qm_mr_cmode { /* matches QCSP_CFG::MM */
struct qm_eqcr_entry {
u8 _ncw_verb; /* writes to this are non-coherent */
u8 dca;
u16 seqnum;
__be16 seqnum;
u8 __reserved[4];
u32 fqid; /* 24-bit */
u32 tag;
__be32 fqid; /* 24-bit */
__be32 tag;
struct qm_fd fd;
u8 __reserved3[32];
} __packed;
@ -187,7 +187,7 @@ struct qm_mr {
struct qm_mcc_fq {
u8 _ncw_verb;
u8 __reserved1[3];
u32 fqid; /* 24-bit */
__be32 fqid; /* 24-bit */
u8 __reserved2[56];
} __packed;
@ -470,7 +470,7 @@ static inline struct qm_eqcr_entry *qm_eqcr_start_stash(struct qm_portal
static inline void eqcr_commit_checks(struct qm_eqcr *eqcr)
{
DPAA_ASSERT(eqcr->busy);
DPAA_ASSERT(!(eqcr->cursor->fqid & ~QM_FQID_MASK));
DPAA_ASSERT(!(be32_to_cpu(eqcr->cursor->fqid) & ~QM_FQID_MASK));
DPAA_ASSERT(eqcr->available >= 1);
}
@ -1395,7 +1395,7 @@ static void qm_mr_process_task(struct work_struct *work)
break;
case QM_MR_VERB_FQPN:
/* Parked */
fq = tag_to_fq(msg->fq.context_b);
fq = tag_to_fq(be32_to_cpu(msg->fq.context_b));
fq_state_change(p, fq, msg, verb);
if (fq->cb.fqs)
fq->cb.fqs(p, fq, msg);
@ -1409,7 +1409,7 @@ static void qm_mr_process_task(struct work_struct *work)
}
} else {
/* Its a software ERN */
fq = tag_to_fq(msg->ern.tag);
fq = tag_to_fq(be32_to_cpu(msg->ern.tag));
fq->cb.ern(p, fq, msg);
}
num++;
@ -1521,7 +1521,7 @@ static inline unsigned int __poll_portal_fast(struct qman_portal *p,
clear_vdqcr(p, fq);
} else {
/* SDQCR: context_b points to the FQ */
fq = tag_to_fq(dq->context_b);
fq = tag_to_fq(be32_to_cpu(dq->context_b));
/* Now let the callback do its stuff */
res = fq->cb.dqrr(p, fq, dq);
/*
@ -1738,9 +1738,9 @@ int qman_init_fq(struct qman_fq *fq, u32 flags, struct qm_mcc_initfq *opts)
if (fq_isset(fq, QMAN_FQ_FLAG_NO_MODIFY))
return -EINVAL;
#endif
if (opts && (opts->we_mask & QM_INITFQ_WE_OAC)) {
if (opts && (be16_to_cpu(opts->we_mask) & QM_INITFQ_WE_OAC)) {
/* And can't be set at the same time as TDTHRESH */
if (opts->we_mask & QM_INITFQ_WE_TDTHRESH)
if (be16_to_cpu(opts->we_mask) & QM_INITFQ_WE_TDTHRESH)
return -EINVAL;
}
/* Issue an INITFQ_[PARKED|SCHED] management command */
@ -1764,14 +1764,16 @@ int qman_init_fq(struct qman_fq *fq, u32 flags, struct qm_mcc_initfq *opts)
if (fq_isclear(fq, QMAN_FQ_FLAG_TO_DCPORTAL)) {
dma_addr_t phys_fq;
mcc->initfq.we_mask |= QM_INITFQ_WE_CONTEXTB;
mcc->initfq.fqd.context_b = fq_to_tag(fq);
mcc->initfq.we_mask |= cpu_to_be16(QM_INITFQ_WE_CONTEXTB);
mcc->initfq.fqd.context_b = cpu_to_be32(fq_to_tag(fq));
/*
* and the physical address - NB, if the user wasn't trying to
* set CONTEXTA, clear the stashing settings.
*/
if (!(mcc->initfq.we_mask & QM_INITFQ_WE_CONTEXTA)) {
mcc->initfq.we_mask |= QM_INITFQ_WE_CONTEXTA;
if (!(be16_to_cpu(mcc->initfq.we_mask) &
QM_INITFQ_WE_CONTEXTA)) {
mcc->initfq.we_mask |=
cpu_to_be16(QM_INITFQ_WE_CONTEXTA);
memset(&mcc->initfq.fqd.context_a, 0,
sizeof(mcc->initfq.fqd.context_a));
} else {
@ -1791,8 +1793,10 @@ int qman_init_fq(struct qman_fq *fq, u32 flags, struct qm_mcc_initfq *opts)
if (flags & QMAN_INITFQ_FLAG_LOCAL) {
int wq = 0;
if (!(mcc->initfq.we_mask & QM_INITFQ_WE_DESTWQ)) {
mcc->initfq.we_mask |= QM_INITFQ_WE_DESTWQ;
if (!(be16_to_cpu(mcc->initfq.we_mask) &
QM_INITFQ_WE_DESTWQ)) {
mcc->initfq.we_mask |=
cpu_to_be16(QM_INITFQ_WE_DESTWQ);
wq = 4;
}
qm_fqd_set_destwq(&mcc->initfq.fqd, p->config->channel, wq);
@ -1811,13 +1815,13 @@ int qman_init_fq(struct qman_fq *fq, u32 flags, struct qm_mcc_initfq *opts)
goto out;
}
if (opts) {
if (opts->we_mask & QM_INITFQ_WE_FQCTRL) {
if (opts->fqd.fq_ctrl & QM_FQCTRL_CGE)
if (be16_to_cpu(opts->we_mask) & QM_INITFQ_WE_FQCTRL) {
if (be16_to_cpu(opts->fqd.fq_ctrl) & QM_FQCTRL_CGE)
fq_set(fq, QMAN_FQ_STATE_CGR_EN);
else
fq_clear(fq, QMAN_FQ_STATE_CGR_EN);
}
if (opts->we_mask & QM_INITFQ_WE_CGID)
if (be16_to_cpu(opts->we_mask) & QM_INITFQ_WE_CGID)
fq->cgr_groupid = opts->fqd.cgid;
}
fq->state = (flags & QMAN_INITFQ_FLAG_SCHED) ?
@ -1937,7 +1941,7 @@ int qman_retire_fq(struct qman_fq *fq, u32 *flags)
msg.verb = QM_MR_VERB_FQRNI;
msg.fq.fqs = mcr->alterfq.fqs;
qm_fqid_set(&msg.fq, fq->fqid);
msg.fq.context_b = fq_to_tag(fq);
msg.fq.context_b = cpu_to_be32(fq_to_tag(fq));
fq->cb.fqs(p, fq, &msg);
}
} else if (res == QM_MCR_RESULT_PENDING) {
@ -2206,7 +2210,7 @@ int qman_enqueue(struct qman_fq *fq, const struct qm_fd *fd)
goto out;
qm_fqid_set(eq, fq->fqid);
eq->tag = fq_to_tag(fq);
eq->tag = cpu_to_be32(fq_to_tag(fq));
eq->fd = *fd;
qm_eqcr_pvb_commit(&p->p, QM_EQCR_VERB_CMD_ENQUEUE);
@ -2253,17 +2257,18 @@ out:
static void qm_cgr_cscn_targ_set(struct __qm_mc_cgr *cgr, int pi, u32 val)
{
if (qman_ip_rev >= QMAN_REV30)
cgr->cscn_targ_upd_ctrl = QM_CGR_TARG_UDP_CTRL_WRITE_BIT | pi;
cgr->cscn_targ_upd_ctrl = cpu_to_be16(pi |
QM_CGR_TARG_UDP_CTRL_WRITE_BIT);
else
cgr->cscn_targ = val | QM_CGR_TARG_PORTAL(pi);
cgr->cscn_targ = cpu_to_be32(val | QM_CGR_TARG_PORTAL(pi));
}
static void qm_cgr_cscn_targ_clear(struct __qm_mc_cgr *cgr, int pi, u32 val)
{
if (qman_ip_rev >= QMAN_REV30)
cgr->cscn_targ_upd_ctrl = pi;
cgr->cscn_targ_upd_ctrl = cpu_to_be16(pi);
else
cgr->cscn_targ = val & ~QM_CGR_TARG_PORTAL(pi);
cgr->cscn_targ = cpu_to_be32(val & ~QM_CGR_TARG_PORTAL(pi));
}
static u8 qman_cgr_cpus[CGR_NUM];
@ -2315,8 +2320,8 @@ int qman_create_cgr(struct qman_cgr *cgr, u32 flags,
goto out;
qm_cgr_cscn_targ_set(&local_opts.cgr, PORTAL_IDX(p),
cgr_state.cgr.cscn_targ);
local_opts.we_mask |= QM_CGR_WE_CSCN_TARG;
be32_to_cpu(cgr_state.cgr.cscn_targ));
local_opts.we_mask |= cpu_to_be16(QM_CGR_WE_CSCN_TARG);
/* send init if flags indicate so */
if (flags & QMAN_CGR_FLAG_USE_INIT)
@ -2383,9 +2388,9 @@ int qman_delete_cgr(struct qman_cgr *cgr)
goto release_lock;
}
local_opts.we_mask = QM_CGR_WE_CSCN_TARG;
local_opts.we_mask = cpu_to_be16(QM_CGR_WE_CSCN_TARG);
qm_cgr_cscn_targ_clear(&local_opts.cgr, PORTAL_IDX(p),
cgr_state.cgr.cscn_targ);
be32_to_cpu(cgr_state.cgr.cscn_targ));
ret = qm_modify_cgr(cgr, 0, &local_opts);
if (ret)
@ -2835,7 +2840,7 @@ static int cgr_cleanup(u32 cgrid)
err = qman_query_fq(&fq, &fqd);
if (WARN_ON(err))
return err;
if ((fqd.fq_ctrl & QM_FQCTRL_CGE) &&
if (be16_to_cpu(fqd.fq_ctrl) & QM_FQCTRL_CGE &&
fqd.cgid == cgrid) {
pr_err("CRGID 0x%x is being used by FQID 0x%x, CGR will be leaked\n",
cgrid, fq.fqid);

10
drivers/soc/fsl/qbman/qman_priv.h
View file

@ -73,20 +73,20 @@ struct qm_mcr_querycgr {
struct __qm_mc_cgr cgr; /* CGR fields */
u8 __reserved2[6];
u8 i_bcnt_hi; /* high 8-bits of 40-bit "Instant" */
u32 i_bcnt_lo; /* low 32-bits of 40-bit */
__be32 i_bcnt_lo; /* low 32-bits of 40-bit */
u8 __reserved3[3];
u8 a_bcnt_hi; /* high 8-bits of 40-bit "Average" */
u32 a_bcnt_lo; /* low 32-bits of 40-bit */
u32 cscn_targ_swp[4];
__be32 a_bcnt_lo; /* low 32-bits of 40-bit */
__be32 cscn_targ_swp[4];
} __packed;
static inline u64 qm_mcr_querycgr_i_get64(const struct qm_mcr_querycgr *q)
{
return ((u64)q->i_bcnt_hi << 32) | (u64)q->i_bcnt_lo;
return ((u64)q->i_bcnt_hi << 32) | be32_to_cpu(q->i_bcnt_lo);
}
static inline u64 qm_mcr_querycgr_a_get64(const struct qm_mcr_querycgr *q)
{
return ((u64)q->a_bcnt_hi << 32) | (u64)q->a_bcnt_lo;
return ((u64)q->a_bcnt_hi << 32) | be32_to_cpu(q->a_bcnt_lo);
}
/* "Query FQ Non-Programmable Fields" */

4
drivers/soc/fsl/qbman/qman_test_api.c
View file

@ -65,7 +65,7 @@ static void fd_init(struct qm_fd *fd)
{
qm_fd_addr_set64(fd, 0xabdeadbeefLLU);
qm_fd_set_contig_big(fd, 0x0000ffff);
fd->cmd = 0xfeedf00d;
fd->cmd = cpu_to_be32(0xfeedf00d);
}
static void fd_inc(struct qm_fd *fd)
@ -86,7 +86,7 @@ static void fd_inc(struct qm_fd *fd)
len--;
qm_fd_set_param(fd, fmt, off, len);
fd->cmd++;
fd->cmd = cpu_to_be32(be32_to_cpu(fd->cmd) + 1);
}
/* The only part of the 'fd' we can't memcmp() is the ppid */

5
drivers/soc/fsl/qbman/qman_test_stash.c
View file

@ -406,8 +406,9 @@ static int init_handler(void *h)
goto failed;
}
memset(&opts, 0, sizeof(opts));
opts.we_mask = QM_INITFQ_WE_FQCTRL | QM_INITFQ_WE_CONTEXTA;
opts.fqd.fq_ctrl = QM_FQCTRL_CTXASTASHING;
opts.we_mask = cpu_to_be16(QM_INITFQ_WE_FQCTRL |
QM_INITFQ_WE_CONTEXTA);
opts.fqd.fq_ctrl = cpu_to_be16(QM_FQCTRL_CTXASTASHING);
qm_fqd_set_stashing(&opts.fqd, 0, STASH_DATA_CL, STASH_CTX_CL);
err = qman_init_fq(&handler->rx, QMAN_INITFQ_FLAG_SCHED |
QMAN_INITFQ_FLAG_LOCAL, &opts);