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f-stack/dpdk/drivers/bus/dpaa/base/qbman/qman.c

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/*-
* This file is provided under a dual BSD/GPLv2 license. When using or
* redistributing this file, you may do so under either license.
*
* BSD LICENSE
*
* Copyright 2008-2016 Freescale Semiconductor Inc.
* Copyright 2017 NXP.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the above-listed copyright holders nor the
* names of any contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* GPL LICENSE SUMMARY
*
* ALTERNATIVELY, this software may be distributed under the terms of the
* GNU General Public License ("GPL") as published by the Free Software
* Foundation, either version 2 of that License or (at your option) any
* later version.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include "qman.h"
#include <rte_branch_prediction.h>
/* Compilation constants */
#define DQRR_MAXFILL 15
#define EQCR_ITHRESH 4 /* if EQCR congests, interrupt threshold */
#define IRQNAME "QMan portal %d"
#define MAX_IRQNAME 16 /* big enough for "QMan portal %d" */
/* maximum number of DQRR entries to process in qman_poll() */
#define FSL_QMAN_POLL_LIMIT 8
/* Lock/unlock frame queues, subject to the "LOCKED" flag. This is about
* inter-processor locking only. Note, FQLOCK() is always called either under a
* local_irq_save() or from interrupt context - hence there's no need for irq
* protection (and indeed, attempting to nest irq-protection doesn't work, as
* the "irq en/disable" machinery isn't recursive...).
*/
#define FQLOCK(fq) \
do { \
struct qman_fq *__fq478 = (fq); \
if (fq_isset(__fq478, QMAN_FQ_FLAG_LOCKED)) \
spin_lock(&__fq478->fqlock); \
} while (0)
#define FQUNLOCK(fq) \
do { \
struct qman_fq *__fq478 = (fq); \
if (fq_isset(__fq478, QMAN_FQ_FLAG_LOCKED)) \
spin_unlock(&__fq478->fqlock); \
} while (0)
static inline void fq_set(struct qman_fq *fq, u32 mask)
{
dpaa_set_bits(mask, &fq->flags);
}
static inline void fq_clear(struct qman_fq *fq, u32 mask)
{
dpaa_clear_bits(mask, &fq->flags);
}
static inline int fq_isset(struct qman_fq *fq, u32 mask)
{
return fq->flags & mask;
}
static inline int fq_isclear(struct qman_fq *fq, u32 mask)
{
return !(fq->flags & mask);
}
struct qman_portal {
struct qm_portal p;
/* PORTAL_BITS_*** - dynamic, strictly internal */
unsigned long bits;
/* interrupt sources processed by portal_isr(), configurable */
unsigned long irq_sources;
u32 use_eqcr_ci_stashing;
u32 slowpoll; /* only used when interrupts are off */
/* only 1 volatile dequeue at a time */
struct qman_fq *vdqcr_owned;
u32 sdqcr;
int dqrr_disable_ref;
/* A portal-specific handler for DCP ERNs. If this is NULL, the global
* handler is called instead.
*/
qman_cb_dc_ern cb_dc_ern;
/* When the cpu-affine portal is activated, this is non-NULL */
const struct qm_portal_config *config;
struct dpa_rbtree retire_table;
char irqname[MAX_IRQNAME];
/* 2-element array. cgrs[0] is mask, cgrs[1] is snapshot. */
struct qman_cgrs *cgrs;
/* linked-list of CSCN handlers. */
struct list_head cgr_cbs;
/* list lock */
spinlock_t cgr_lock;
/* track if memory was allocated by the driver */
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
/* Keep a shadow copy of the DQRR on LE systems as the SW needs to
* do byte swaps of DQRR read only memory. First entry must be aligned
* to 2 ** 10 to ensure DQRR index calculations based shadow copy
* address (6 bits for address shift + 4 bits for the DQRR size).
*/
struct qm_dqrr_entry shadow_dqrr[QM_DQRR_SIZE]
__attribute__((aligned(1024)));
#endif
};
/* Global handler for DCP ERNs. Used when the portal receiving the message does
* not have a portal-specific handler.
*/
static qman_cb_dc_ern cb_dc_ern;
static cpumask_t affine_mask;
static DEFINE_SPINLOCK(affine_mask_lock);
static u16 affine_channels[NR_CPUS];
static RTE_DEFINE_PER_LCORE(struct qman_portal, qman_affine_portal);
static inline struct qman_portal *get_affine_portal(void)
{
return &RTE_PER_LCORE(qman_affine_portal);
}
/* This gives a FQID->FQ lookup to cover the fact that we can't directly demux
* retirement notifications (the fact they are sometimes h/w-consumed means that
* contextB isn't always a s/w demux - and as we can't know which case it is
* when looking at the notification, we have to use the slow lookup for all of
* them). NB, it's possible to have multiple FQ objects refer to the same FQID
* (though at most one of them should be the consumer), so this table isn't for
* all FQs - FQs are added when retirement commands are issued, and removed when
* they complete, which also massively reduces the size of this table.
*/
IMPLEMENT_DPAA_RBTREE(fqtree, struct qman_fq, node, fqid);
/*
* This is what everything can wait on, even if it migrates to a different cpu
* to the one whose affine portal it is waiting on.
*/
static DECLARE_WAIT_QUEUE_HEAD(affine_queue);
static inline int table_push_fq(struct qman_portal *p, struct qman_fq *fq)
{
int ret = fqtree_push(&p->retire_table, fq);
if (ret)
pr_err("ERROR: double FQ-retirement %d\n", fq->fqid);
return ret;
}
static inline void table_del_fq(struct qman_portal *p, struct qman_fq *fq)
{
fqtree_del(&p->retire_table, fq);
}
static inline struct qman_fq *table_find_fq(struct qman_portal *p, u32 fqid)
{
return fqtree_find(&p->retire_table, fqid);
}
#ifdef CONFIG_FSL_QMAN_FQ_LOOKUP
static void **qman_fq_lookup_table;
static size_t qman_fq_lookup_table_size;
int qman_setup_fq_lookup_table(size_t num_entries)
{
num_entries++;
/* Allocate 1 more entry since the first entry is not used */
qman_fq_lookup_table = vmalloc((num_entries * sizeof(void *)));
if (!qman_fq_lookup_table) {
pr_err("QMan: Could not allocate fq lookup table\n");
return -ENOMEM;
}
memset(qman_fq_lookup_table, 0, num_entries * sizeof(void *));
qman_fq_lookup_table_size = num_entries;
pr_debug("QMan: Allocated lookup table at %p, entry count %lu\n",
qman_fq_lookup_table,
(unsigned long)qman_fq_lookup_table_size);
return 0;
}
/* global structure that maintains fq object mapping */
static DEFINE_SPINLOCK(fq_hash_table_lock);
static int find_empty_fq_table_entry(u32 *entry, struct qman_fq *fq)
{
u32 i;
spin_lock(&fq_hash_table_lock);
/* Can't use index zero because this has special meaning
* in context_b field.
*/
for (i = 1; i < qman_fq_lookup_table_size; i++) {
if (qman_fq_lookup_table[i] == NULL) {
*entry = i;
qman_fq_lookup_table[i] = fq;
spin_unlock(&fq_hash_table_lock);
return 0;
}
}
spin_unlock(&fq_hash_table_lock);
return -ENOMEM;
}
static void clear_fq_table_entry(u32 entry)
{
spin_lock(&fq_hash_table_lock);
DPAA_BUG_ON(entry >= qman_fq_lookup_table_size);
qman_fq_lookup_table[entry] = NULL;
spin_unlock(&fq_hash_table_lock);
}
static inline struct qman_fq *get_fq_table_entry(u32 entry)
{
DPAA_BUG_ON(entry >= qman_fq_lookup_table_size);
return qman_fq_lookup_table[entry];
}
#endif
static inline void cpu_to_hw_fqd(struct qm_fqd *fqd)
{
/* Byteswap the FQD to HW format */
fqd->fq_ctrl = cpu_to_be16(fqd->fq_ctrl);
fqd->dest_wq = cpu_to_be16(fqd->dest_wq);
fqd->ics_cred = cpu_to_be16(fqd->ics_cred);
fqd->context_b = cpu_to_be32(fqd->context_b);
fqd->context_a.opaque = cpu_to_be64(fqd->context_a.opaque);
fqd->opaque_td = cpu_to_be16(fqd->opaque_td);
}
static inline void hw_fqd_to_cpu(struct qm_fqd *fqd)
{
/* Byteswap the FQD to CPU format */
fqd->fq_ctrl = be16_to_cpu(fqd->fq_ctrl);
fqd->dest_wq = be16_to_cpu(fqd->dest_wq);
fqd->ics_cred = be16_to_cpu(fqd->ics_cred);
fqd->context_b = be32_to_cpu(fqd->context_b);
fqd->context_a.opaque = be64_to_cpu(fqd->context_a.opaque);
}
static inline void cpu_to_hw_fd(struct qm_fd *fd)
{
fd->addr = cpu_to_be40(fd->addr);
fd->status = cpu_to_be32(fd->status);
fd->opaque = cpu_to_be32(fd->opaque);
}
static inline void hw_fd_to_cpu(struct qm_fd *fd)
{
fd->addr = be40_to_cpu(fd->addr);
fd->status = be32_to_cpu(fd->status);
fd->opaque = be32_to_cpu(fd->opaque);
}
/* In the case that slow- and fast-path handling are both done by qman_poll()
* (ie. because there is no interrupt handling), we ought to balance how often
* we do the fast-path poll versus the slow-path poll. We'll use two decrementer
* sources, so we call the fast poll 'n' times before calling the slow poll
* once. The idle decrementer constant is used when the last slow-poll detected
* no work to do, and the busy decrementer constant when the last slow-poll had
* work to do.
*/
#define SLOW_POLL_IDLE 1000
#define SLOW_POLL_BUSY 10
static u32 __poll_portal_slow(struct qman_portal *p, u32 is);
static inline unsigned int __poll_portal_fast(struct qman_portal *p,
unsigned int poll_limit);
/* Portal interrupt handler */
static irqreturn_t portal_isr(__always_unused int irq, void *ptr)
{
struct qman_portal *p = ptr;
/*
* The CSCI/CCSCI source is cleared inside __poll_portal_slow(), because
* it could race against a Query Congestion State command also given
* as part of the handling of this interrupt source. We mustn't
* clear it a second time in this top-level function.
*/
u32 clear = QM_DQAVAIL_MASK | (p->irq_sources &
~(QM_PIRQ_CSCI | QM_PIRQ_CCSCI));
u32 is = qm_isr_status_read(&p->p) & p->irq_sources;
/* DQRR-handling if it's interrupt-driven */
if (is & QM_PIRQ_DQRI)
__poll_portal_fast(p, FSL_QMAN_POLL_LIMIT);
/* Handling of anything else that's interrupt-driven */
clear |= __poll_portal_slow(p, is);
qm_isr_status_clear(&p->p, clear);
return IRQ_HANDLED;
}
/* This inner version is used privately by qman_create_affine_portal(), as well
* as by the exported qman_stop_dequeues().
*/
static inline void qman_stop_dequeues_ex(struct qman_portal *p)
{
if (!(p->dqrr_disable_ref++))
qm_dqrr_set_maxfill(&p->p, 0);
}
static int drain_mr_fqrni(struct qm_portal *p)
{
const struct qm_mr_entry *msg;
loop:
msg = qm_mr_current(p);
if (!msg) {
/*
* if MR was full and h/w had other FQRNI entries to produce, we
* need to allow it time to produce those entries once the
* existing entries are consumed. A worst-case situation
* (fully-loaded system) means h/w sequencers may have to do 3-4
* other things before servicing the portal's MR pump, each of
* which (if slow) may take ~50 qman cycles (which is ~200
* processor cycles). So rounding up and then multiplying this
* worst-case estimate by a factor of 10, just to be
* ultra-paranoid, goes as high as 10,000 cycles. NB, we consume
* one entry at a time, so h/w has an opportunity to produce new
* entries well before the ring has been fully consumed, so
* we're being *really* paranoid here.
*/
u64 now, then = mfatb();
do {
now = mfatb();
} while ((then + 10000) > now);
msg = qm_mr_current(p);
if (!msg)
return 0;
}
if ((msg->verb & QM_MR_VERB_TYPE_MASK) != QM_MR_VERB_FQRNI) {
/* We aren't draining anything but FQRNIs */
pr_err("Found verb 0x%x in MR\n", msg->verb);
return -1;
}
qm_mr_next(p);
qm_mr_cci_consume(p, 1);
goto loop;
}
static inline int qm_eqcr_init(struct qm_portal *portal,
enum qm_eqcr_pmode pmode,
unsigned int eq_stash_thresh,
int eq_stash_prio)
{
/* This use of 'register', as well as all other occurrences, is because
* it has been observed to generate much faster code with gcc than is
* otherwise the case.
*/
register struct qm_eqcr *eqcr = &portal->eqcr;
u32 cfg;
u8 pi;
eqcr->ring = portal->addr.ce + QM_CL_EQCR;
eqcr->ci = qm_in(EQCR_CI_CINH) & (QM_EQCR_SIZE - 1);
qm_cl_invalidate(EQCR_CI);
pi = qm_in(EQCR_PI_CINH) & (QM_EQCR_SIZE - 1);
eqcr->cursor = eqcr->ring + pi;
eqcr->vbit = (qm_in(EQCR_PI_CINH) & QM_EQCR_SIZE) ?
QM_EQCR_VERB_VBIT : 0;
eqcr->available = QM_EQCR_SIZE - 1 -
qm_cyc_diff(QM_EQCR_SIZE, eqcr->ci, pi);
eqcr->ithresh = qm_in(EQCR_ITR);
#ifdef RTE_LIBRTE_DPAA_HWDEBUG
eqcr->busy = 0;
eqcr->pmode = pmode;
#endif
cfg = (qm_in(CFG) & 0x00ffffff) |
(eq_stash_thresh << 28) | /* QCSP_CFG: EST */
(eq_stash_prio << 26) | /* QCSP_CFG: EP */
((pmode & 0x3) << 24); /* QCSP_CFG::EPM */
qm_out(CFG, cfg);
return 0;
}
static inline void qm_eqcr_finish(struct qm_portal *portal)
{
register struct qm_eqcr *eqcr = &portal->eqcr;
u8 pi, ci;
u32 cfg;
/*
* Disable EQCI stashing because the QMan only
* presents the value it previously stashed to
* maintain coherency. Setting the stash threshold
* to 1 then 0 ensures that QMan has resyncronized
* its internal copy so that the portal is clean
* when it is reinitialized in the future
*/
cfg = (qm_in(CFG) & 0x0fffffff) |
(1 << 28); /* QCSP_CFG: EST */
qm_out(CFG, cfg);
cfg &= 0x0fffffff; /* stash threshold = 0 */
qm_out(CFG, cfg);
pi = qm_in(EQCR_PI_CINH) & (QM_EQCR_SIZE - 1);
ci = qm_in(EQCR_CI_CINH) & (QM_EQCR_SIZE - 1);
/* Refresh EQCR CI cache value */
qm_cl_invalidate(EQCR_CI);
eqcr->ci = qm_cl_in(EQCR_CI) & (QM_EQCR_SIZE - 1);
#ifdef RTE_LIBRTE_DPAA_HWDEBUG
DPAA_ASSERT(!eqcr->busy);
#endif
if (pi != EQCR_PTR2IDX(eqcr->cursor))
pr_crit("losing uncommitted EQCR entries\n");
if (ci != eqcr->ci)
pr_crit("missing existing EQCR completions\n");
if (eqcr->ci != EQCR_PTR2IDX(eqcr->cursor))
pr_crit("EQCR destroyed unquiesced\n");
}
static inline int qm_dqrr_init(struct qm_portal *portal,
__maybe_unused const struct qm_portal_config *config,
enum qm_dqrr_dmode dmode,
__maybe_unused enum qm_dqrr_pmode pmode,
enum qm_dqrr_cmode cmode, u8 max_fill)
{
register struct qm_dqrr *dqrr = &portal->dqrr;
u32 cfg;
/* Make sure the DQRR will be idle when we enable */
qm_out(DQRR_SDQCR, 0);
qm_out(DQRR_VDQCR, 0);
qm_out(DQRR_PDQCR, 0);
dqrr->ring = portal->addr.ce + QM_CL_DQRR;
dqrr->pi = qm_in(DQRR_PI_CINH) & (QM_DQRR_SIZE - 1);
dqrr->ci = qm_in(DQRR_CI_CINH) & (QM_DQRR_SIZE - 1);
dqrr->cursor = dqrr->ring + dqrr->ci;
dqrr->fill = qm_cyc_diff(QM_DQRR_SIZE, dqrr->ci, dqrr->pi);
dqrr->vbit = (qm_in(DQRR_PI_CINH) & QM_DQRR_SIZE) ?
QM_DQRR_VERB_VBIT : 0;
dqrr->ithresh = qm_in(DQRR_ITR);
#ifdef RTE_LIBRTE_DPAA_HWDEBUG
dqrr->dmode = dmode;
dqrr->pmode = pmode;
dqrr->cmode = cmode;
#endif
/* Invalidate every ring entry before beginning */
for (cfg = 0; cfg < QM_DQRR_SIZE; cfg++)
dccivac(qm_cl(dqrr->ring, cfg));
cfg = (qm_in(CFG) & 0xff000f00) |
((max_fill & (QM_DQRR_SIZE - 1)) << 20) | /* DQRR_MF */
((dmode & 1) << 18) | /* DP */
((cmode & 3) << 16) | /* DCM */
0xa0 | /* RE+SE */
(0 ? 0x40 : 0) | /* Ignore RP */
(0 ? 0x10 : 0); /* Ignore SP */
qm_out(CFG, cfg);
qm_dqrr_set_maxfill(portal, max_fill);
return 0;
}
static inline void qm_dqrr_finish(struct qm_portal *portal)
{
__maybe_unused register struct qm_dqrr *dqrr = &portal->dqrr;
#ifdef RTE_LIBRTE_DPAA_HWDEBUG
if ((dqrr->cmode != qm_dqrr_cdc) &&
(dqrr->ci != DQRR_PTR2IDX(dqrr->cursor)))
pr_crit("Ignoring completed DQRR entries\n");
#endif
}
static inline int qm_mr_init(struct qm_portal *portal,
__maybe_unused enum qm_mr_pmode pmode,
enum qm_mr_cmode cmode)
{
register struct qm_mr *mr = &portal->mr;
u32 cfg;
mr->ring = portal->addr.ce + QM_CL_MR;
mr->pi = qm_in(MR_PI_CINH) & (QM_MR_SIZE - 1);
mr->ci = qm_in(MR_CI_CINH) & (QM_MR_SIZE - 1);
mr->cursor = mr->ring + mr->ci;
mr->fill = qm_cyc_diff(QM_MR_SIZE, mr->ci, mr->pi);
mr->vbit = (qm_in(MR_PI_CINH) & QM_MR_SIZE) ? QM_MR_VERB_VBIT : 0;
mr->ithresh = qm_in(MR_ITR);
#ifdef RTE_LIBRTE_DPAA_HWDEBUG
mr->pmode = pmode;
mr->cmode = cmode;
#endif
cfg = (qm_in(CFG) & 0xfffff0ff) |
((cmode & 1) << 8); /* QCSP_CFG:MM */
qm_out(CFG, cfg);
return 0;
}
static inline void qm_mr_pvb_update(struct qm_portal *portal)
{
register struct qm_mr *mr = &portal->mr;
const struct qm_mr_entry *res = qm_cl(mr->ring, mr->pi);
#ifdef RTE_LIBRTE_DPAA_HWDEBUG
DPAA_ASSERT(mr->pmode == qm_mr_pvb);
#endif
/* when accessing 'verb', use __raw_readb() to ensure that compiler
* inlining doesn't try to optimise out "excess reads".
*/
if ((__raw_readb(&res->verb) & QM_MR_VERB_VBIT) == mr->vbit) {
mr->pi = (mr->pi + 1) & (QM_MR_SIZE - 1);
if (!mr->pi)
mr->vbit ^= QM_MR_VERB_VBIT;
mr->fill++;
res = MR_INC(res);
}
dcbit_ro(res);
}
static inline
struct qman_portal *qman_create_portal(
struct qman_portal *portal,
const struct qm_portal_config *c,
const struct qman_cgrs *cgrs)
{
struct qm_portal *p;
char buf[16];
int ret;
u32 isdr;
p = &portal->p;
portal->use_eqcr_ci_stashing = ((qman_ip_rev >= QMAN_REV30) ? 1 : 0);
/*
* prep the low-level portal struct with the mapped addresses from the
* config, everything that follows depends on it and "config" is more
* for (de)reference
*/
p->addr.ce = c->addr_virt[DPAA_PORTAL_CE];
p->addr.ci = c->addr_virt[DPAA_PORTAL_CI];
/*
* If CI-stashing is used, the current defaults use a threshold of 3,
* and stash with high-than-DQRR priority.
*/
if (qm_eqcr_init(p, qm_eqcr_pvb,
portal->use_eqcr_ci_stashing ? 3 : 0, 1)) {
pr_err("Qman EQCR initialisation failed\n");
goto fail_eqcr;
}
if (qm_dqrr_init(p, c, qm_dqrr_dpush, qm_dqrr_pvb,
qm_dqrr_cdc, DQRR_MAXFILL)) {
pr_err("Qman DQRR initialisation failed\n");
goto fail_dqrr;
}
if (qm_mr_init(p, qm_mr_pvb, qm_mr_cci)) {
pr_err("Qman MR initialisation failed\n");
goto fail_mr;
}
if (qm_mc_init(p)) {
pr_err("Qman MC initialisation failed\n");
goto fail_mc;
}
/* static interrupt-gating controls */
qm_dqrr_set_ithresh(p, 0);
qm_mr_set_ithresh(p, 0);
qm_isr_set_iperiod(p, 0);
portal->cgrs = kmalloc(2 * sizeof(*cgrs), GFP_KERNEL);
if (!portal->cgrs)
goto fail_cgrs;
/* initial snapshot is no-depletion */
qman_cgrs_init(&portal->cgrs[1]);
if (cgrs)
portal->cgrs[0] = *cgrs;
else
/* if the given mask is NULL, assume all CGRs can be seen */
qman_cgrs_fill(&portal->cgrs[0]);
INIT_LIST_HEAD(&portal->cgr_cbs);
spin_lock_init(&portal->cgr_lock);
portal->bits = 0;
portal->slowpoll = 0;
portal->sdqcr = QM_SDQCR_SOURCE_CHANNELS | QM_SDQCR_COUNT_UPTO3 |
QM_SDQCR_DEDICATED_PRECEDENCE | QM_SDQCR_TYPE_PRIO_QOS |
QM_SDQCR_TOKEN_SET(0xab) | QM_SDQCR_CHANNELS_DEDICATED;
portal->dqrr_disable_ref = 0;
portal->cb_dc_ern = NULL;
sprintf(buf, "qportal-%d", c->channel);
dpa_rbtree_init(&portal->retire_table);
isdr = 0xffffffff;
qm_isr_disable_write(p, isdr);
portal->irq_sources = 0;
qm_isr_enable_write(p, portal->irq_sources);
qm_isr_status_clear(p, 0xffffffff);
snprintf(portal->irqname, MAX_IRQNAME, IRQNAME, c->cpu);
if (request_irq(c->irq, portal_isr, 0, portal->irqname,
portal)) {
pr_err("request_irq() failed\n");
goto fail_irq;
}
/* Need EQCR to be empty before continuing */
isdr &= ~QM_PIRQ_EQCI;
qm_isr_disable_write(p, isdr);
ret = qm_eqcr_get_fill(p);
if (ret) {
pr_err("Qman EQCR unclean\n");
goto fail_eqcr_empty;
}
isdr &= ~(QM_PIRQ_DQRI | QM_PIRQ_MRI);
qm_isr_disable_write(p, isdr);
if (qm_dqrr_current(p)) {
pr_err("Qman DQRR unclean\n");
qm_dqrr_cdc_consume_n(p, 0xffff);
}
if (qm_mr_current(p) && drain_mr_fqrni(p)) {
/* special handling, drain just in case it's a few FQRNIs */
if (drain_mr_fqrni(p))
goto fail_dqrr_mr_empty;
}
/* Success */
portal->config = c;
qm_isr_disable_write(p, 0);
qm_isr_uninhibit(p);
/* Write a sane SDQCR */
qm_dqrr_sdqcr_set(p, portal->sdqcr);
return portal;
fail_dqrr_mr_empty:
fail_eqcr_empty:
free_irq(c->irq, portal);
fail_irq:
kfree(portal->cgrs);
spin_lock_destroy(&portal->cgr_lock);
fail_cgrs:
qm_mc_finish(p);
fail_mc:
qm_mr_finish(p);
fail_mr:
qm_dqrr_finish(p);
fail_dqrr:
qm_eqcr_finish(p);
fail_eqcr:
return NULL;
}
struct qman_portal *qman_create_affine_portal(const struct qm_portal_config *c,
const struct qman_cgrs *cgrs)
{
struct qman_portal *res;
struct qman_portal *portal = get_affine_portal();
/* A criteria for calling this function (from qman_driver.c) is that
* we're already affine to the cpu and won't schedule onto another cpu.
*/
res = qman_create_portal(portal, c, cgrs);
if (res) {
spin_lock(&affine_mask_lock);
CPU_SET(c->cpu, &affine_mask);
affine_channels[c->cpu] =
c->channel;
spin_unlock(&affine_mask_lock);
}
return res;
}
static inline
void qman_destroy_portal(struct qman_portal *qm)
{
const struct qm_portal_config *pcfg;
/* Stop dequeues on the portal */
qm_dqrr_sdqcr_set(&qm->p, 0);
/*
* NB we do this to "quiesce" EQCR. If we add enqueue-completions or
* something related to QM_PIRQ_EQCI, this may need fixing.
* Also, due to the prefetching model used for CI updates in the enqueue
* path, this update will only invalidate the CI cacheline *after*
* working on it, so we need to call this twice to ensure a full update
* irrespective of where the enqueue processing was at when the teardown
* began.
*/
qm_eqcr_cce_update(&qm->p);
qm_eqcr_cce_update(&qm->p);
pcfg = qm->config;
free_irq(pcfg->irq, qm);
kfree(qm->cgrs);
qm_mc_finish(&qm->p);
qm_mr_finish(&qm->p);
qm_dqrr_finish(&qm->p);
qm_eqcr_finish(&qm->p);
qm->config = NULL;
spin_lock_destroy(&qm->cgr_lock);
}
const struct qm_portal_config *qman_destroy_affine_portal(void)
{
/* We don't want to redirect if we're a slave, use "raw" */
struct qman_portal *qm = get_affine_portal();
const struct qm_portal_config *pcfg;
int cpu;
pcfg = qm->config;
cpu = pcfg->cpu;
qman_destroy_portal(qm);
spin_lock(&affine_mask_lock);
CPU_CLR(cpu, &affine_mask);
spin_unlock(&affine_mask_lock);
return pcfg;
}
int qman_get_portal_index(void)
{
struct qman_portal *p = get_affine_portal();
return p->config->index;
}
/* Inline helper to reduce nesting in __poll_portal_slow() */
static inline void fq_state_change(struct qman_portal *p, struct qman_fq *fq,
const struct qm_mr_entry *msg, u8 verb)
{
FQLOCK(fq);
switch (verb) {
case QM_MR_VERB_FQRL:
DPAA_ASSERT(fq_isset(fq, QMAN_FQ_STATE_ORL));
fq_clear(fq, QMAN_FQ_STATE_ORL);
table_del_fq(p, fq);
break;
case QM_MR_VERB_FQRN:
DPAA_ASSERT((fq->state == qman_fq_state_parked) ||
(fq->state == qman_fq_state_sched));
DPAA_ASSERT(fq_isset(fq, QMAN_FQ_STATE_CHANGING));
fq_clear(fq, QMAN_FQ_STATE_CHANGING);
if (msg->fq.fqs & QM_MR_FQS_NOTEMPTY)
fq_set(fq, QMAN_FQ_STATE_NE);
if (msg->fq.fqs & QM_MR_FQS_ORLPRESENT)
fq_set(fq, QMAN_FQ_STATE_ORL);
else
table_del_fq(p, fq);
fq->state = qman_fq_state_retired;
break;
case QM_MR_VERB_FQPN:
DPAA_ASSERT(fq->state == qman_fq_state_sched);
DPAA_ASSERT(fq_isclear(fq, QMAN_FQ_STATE_CHANGING));
fq->state = qman_fq_state_parked;
}
FQUNLOCK(fq);
}
static u32 __poll_portal_slow(struct qman_portal *p, u32 is)
{
const struct qm_mr_entry *msg;
struct qm_mr_entry swapped_msg;
if (is & QM_PIRQ_CSCI) {
struct qman_cgrs rr, c;
struct qm_mc_result *mcr;
struct qman_cgr *cgr;
spin_lock(&p->cgr_lock);
/*
* The CSCI bit must be cleared _before_ issuing the
* Query Congestion State command, to ensure that a long
* CGR State Change callback cannot miss an intervening
* state change.
*/
qm_isr_status_clear(&p->p, QM_PIRQ_CSCI);
qm_mc_start(&p->p);
qm_mc_commit(&p->p, QM_MCC_VERB_QUERYCONGESTION);
while (!(mcr = qm_mc_result(&p->p)))
cpu_relax();
/* mask out the ones I'm not interested in */
qman_cgrs_and(&rr, (const struct qman_cgrs *)
&mcr->querycongestion.state, &p->cgrs[0]);
/* check previous snapshot for delta, enter/exit congestion */
qman_cgrs_xor(&c, &rr, &p->cgrs[1]);
/* update snapshot */
qman_cgrs_cp(&p->cgrs[1], &rr);
/* Invoke callback */
list_for_each_entry(cgr, &p->cgr_cbs, node)
if (cgr->cb && qman_cgrs_get(&c, cgr->cgrid))
cgr->cb(p, cgr, qman_cgrs_get(&rr, cgr->cgrid));
spin_unlock(&p->cgr_lock);
}
if (is & QM_PIRQ_EQRI) {
qm_eqcr_cce_update(&p->p);
qm_eqcr_set_ithresh(&p->p, 0);
wake_up(&affine_queue);
}
if (is & QM_PIRQ_MRI) {
struct qman_fq *fq;
u8 verb, num = 0;
mr_loop:
qm_mr_pvb_update(&p->p);
msg = qm_mr_current(&p->p);
if (!msg)
goto mr_done;
swapped_msg = *msg;
hw_fd_to_cpu(&swapped_msg.ern.fd);
verb = msg->verb & QM_MR_VERB_TYPE_MASK;
/* The message is a software ERN iff the 0x20 bit is set */
if (verb & 0x20) {
switch (verb) {
case QM_MR_VERB_FQRNI:
/* nada, we drop FQRNIs on the floor */
break;
case QM_MR_VERB_FQRN:
case QM_MR_VERB_FQRL:
/* Lookup in the retirement table */
fq = table_find_fq(p,
be32_to_cpu(msg->fq.fqid));
DPAA_BUG_ON(!fq);
fq_state_change(p, fq, &swapped_msg, verb);
if (fq->cb.fqs)
fq->cb.fqs(p, fq, &swapped_msg);
break;
case QM_MR_VERB_FQPN:
/* Parked */
#ifdef CONFIG_FSL_QMAN_FQ_LOOKUP
fq = get_fq_table_entry(
be32_to_cpu(msg->fq.contextB));
#else
fq = (void *)(uintptr_t)
be32_to_cpu(msg->fq.contextB);
#endif
fq_state_change(p, fq, msg, verb);
if (fq->cb.fqs)
fq->cb.fqs(p, fq, &swapped_msg);
break;
case QM_MR_VERB_DC_ERN:
/* DCP ERN */
if (p->cb_dc_ern)
p->cb_dc_ern(p, msg);
else if (cb_dc_ern)
cb_dc_ern(p, msg);
else {
static int warn_once;
if (!warn_once) {
pr_crit("Leaking DCP ERNs!\n");
warn_once = 1;
}
}
break;
default:
pr_crit("Invalid MR verb 0x%02x\n", verb);
}
} else {
/* Its a software ERN */
#ifdef CONFIG_FSL_QMAN_FQ_LOOKUP
fq = get_fq_table_entry(be32_to_cpu(msg->ern.tag));
#else
fq = (void *)(uintptr_t)be32_to_cpu(msg->ern.tag);
#endif
fq->cb.ern(p, fq, &swapped_msg);
}
num++;
qm_mr_next(&p->p);
goto mr_loop;
mr_done:
qm_mr_cci_consume(&p->p, num);
}
/*
* QM_PIRQ_CSCI/CCSCI has already been cleared, as part of its specific
* processing. If that interrupt source has meanwhile been re-asserted,
* we mustn't clear it here (or in the top-level interrupt handler).
*/
return is & (QM_PIRQ_EQCI | QM_PIRQ_EQRI | QM_PIRQ_MRI);
}
/*
* remove some slowish-path stuff from the "fast path" and make sure it isn't
* inlined.
*/
static noinline void clear_vdqcr(struct qman_portal *p, struct qman_fq *fq)
{
p->vdqcr_owned = NULL;
FQLOCK(fq);
fq_clear(fq, QMAN_FQ_STATE_VDQCR);
FQUNLOCK(fq);
wake_up(&affine_queue);
}
/*
* The only states that would conflict with other things if they ran at the
* same time on the same cpu are:
*
* (i) setting/clearing vdqcr_owned, and
* (ii) clearing the NE (Not Empty) flag.
*
* Both are safe. Because;
*
* (i) this clearing can only occur after qman_set_vdq() has set the
* vdqcr_owned field (which it does before setting VDQCR), and
* qman_volatile_dequeue() blocks interrupts and preemption while this is
* done so that we can't interfere.
* (ii) the NE flag is only cleared after qman_retire_fq() has set it, and as
* with (i) that API prevents us from interfering until it's safe.
*
* The good thing is that qman_set_vdq() and qman_retire_fq() run far
* less frequently (ie. per-FQ) than __poll_portal_fast() does, so the nett
* advantage comes from this function not having to "lock" anything at all.
*
* Note also that the callbacks are invoked at points which are safe against the
* above potential conflicts, but that this function itself is not re-entrant
* (this is because the function tracks one end of each FIFO in the portal and
* we do *not* want to lock that). So the consequence is that it is safe for
* user callbacks to call into any QMan API.
*/
static inline unsigned int __poll_portal_fast(struct qman_portal *p,
unsigned int poll_limit)
{
const struct qm_dqrr_entry *dq;
struct qman_fq *fq;
enum qman_cb_dqrr_result res;
unsigned int limit = 0;
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
struct qm_dqrr_entry *shadow;
#endif
do {
qm_dqrr_pvb_update(&p->p);
dq = qm_dqrr_current(&p->p);
if (!dq)
break;
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
/* If running on an LE system the fields of the
* dequeue entry must be swapper. Because the
* QMan HW will ignore writes the DQRR entry is
* copied and the index stored within the copy
*/
shadow = &p->shadow_dqrr[DQRR_PTR2IDX(dq)];
*shadow = *dq;
dq = shadow;
shadow->fqid = be32_to_cpu(shadow->fqid);
shadow->contextB = be32_to_cpu(shadow->contextB);
shadow->seqnum = be16_to_cpu(shadow->seqnum);
hw_fd_to_cpu(&shadow->fd);
#endif
if (dq->stat & QM_DQRR_STAT_UNSCHEDULED) {
/*
* VDQCR: don't trust context_b as the FQ may have
* been configured for h/w consumption and we're
* draining it post-retirement.
*/
fq = p->vdqcr_owned;
/*
* We only set QMAN_FQ_STATE_NE when retiring, so we
* only need to check for clearing it when doing
* volatile dequeues. It's one less thing to check
* in the critical path (SDQCR).
*/
if (dq->stat & QM_DQRR_STAT_FQ_EMPTY)
fq_clear(fq, QMAN_FQ_STATE_NE);
/*
* This is duplicated from the SDQCR code, but we
* have stuff to do before *and* after this callback,
* and we don't want multiple if()s in the critical
* path (SDQCR).
*/
res = fq->cb.dqrr(p, fq, dq);
if (res == qman_cb_dqrr_stop)
break;
/* Check for VDQCR completion */
if (dq->stat & QM_DQRR_STAT_DQCR_EXPIRED)
clear_vdqcr(p, fq);
} else {
/* SDQCR: context_b points to the FQ */
#ifdef CONFIG_FSL_QMAN_FQ_LOOKUP
fq = get_fq_table_entry(dq->contextB);
#else
fq = (void *)(uintptr_t)dq->contextB;
#endif
/* Now let the callback do its stuff */
res = fq->cb.dqrr(p, fq, dq);
/*
* The callback can request that we exit without
* consuming this entry nor advancing;
*/
if (res == qman_cb_dqrr_stop)
break;
}
/* Interpret 'dq' from a driver perspective. */
/*
* Parking isn't possible unless HELDACTIVE was set. NB,
* FORCEELIGIBLE implies HELDACTIVE, so we only need to
* check for HELDACTIVE to cover both.
*/
DPAA_ASSERT((dq->stat & QM_DQRR_STAT_FQ_HELDACTIVE) ||
(res != qman_cb_dqrr_park));
/* just means "skip it, I'll consume it myself later on" */
if (res != qman_cb_dqrr_defer)
qm_dqrr_cdc_consume_1ptr(&p->p, dq,
res == qman_cb_dqrr_park);
/* Move forward */
qm_dqrr_next(&p->p);
/*
* Entry processed and consumed, increment our counter. The
* callback can request that we exit after consuming the
* entry, and we also exit if we reach our processing limit,
* so loop back only if neither of these conditions is met.
*/
} while (++limit < poll_limit && res != qman_cb_dqrr_consume_stop);
return limit;
}
u16 qman_affine_channel(int cpu)
{
if (cpu < 0) {
struct qman_portal *portal = get_affine_portal();
cpu = portal->config->cpu;
}
DPAA_BUG_ON(!CPU_ISSET(cpu, &affine_mask));
return affine_channels[cpu];
}
struct qm_dqrr_entry *qman_dequeue(struct qman_fq *fq)
{
struct qman_portal *p = get_affine_portal();
const struct qm_dqrr_entry *dq;
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
struct qm_dqrr_entry *shadow;
#endif
qm_dqrr_pvb_update(&p->p);
dq = qm_dqrr_current(&p->p);
if (!dq)
return NULL;
if (!(dq->stat & QM_DQRR_STAT_FD_VALID)) {
/* Invalid DQRR - put the portal and consume the DQRR.
* Return NULL to user as no packet is seen.
*/
qman_dqrr_consume(fq, (struct qm_dqrr_entry *)dq);
return NULL;
}
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
shadow = &p->shadow_dqrr[DQRR_PTR2IDX(dq)];
*shadow = *dq;
dq = shadow;
shadow->fqid = be32_to_cpu(shadow->fqid);
shadow->contextB = be32_to_cpu(shadow->contextB);
shadow->seqnum = be16_to_cpu(shadow->seqnum);
hw_fd_to_cpu(&shadow->fd);
#endif
if (dq->stat & QM_DQRR_STAT_FQ_EMPTY)
fq_clear(fq, QMAN_FQ_STATE_NE);
return (struct qm_dqrr_entry *)dq;
}
void qman_dqrr_consume(struct qman_fq *fq,
struct qm_dqrr_entry *dq)
{
struct qman_portal *p = get_affine_portal();
if (dq->stat & QM_DQRR_STAT_DQCR_EXPIRED)
clear_vdqcr(p, fq);
qm_dqrr_cdc_consume_1ptr(&p->p, dq, 0);
qm_dqrr_next(&p->p);
}
int qman_poll_dqrr(unsigned int limit)
{
struct qman_portal *p = get_affine_portal();
int ret;
ret = __poll_portal_fast(p, limit);
return ret;
}
void qman_poll(void)
{
struct qman_portal *p = get_affine_portal();
if ((~p->irq_sources) & QM_PIRQ_SLOW) {
if (!(p->slowpoll--)) {
u32 is = qm_isr_status_read(&p->p) & ~p->irq_sources;
u32 active = __poll_portal_slow(p, is);
if (active) {
qm_isr_status_clear(&p->p, active);
p->slowpoll = SLOW_POLL_BUSY;
} else
p->slowpoll = SLOW_POLL_IDLE;
}
}
if ((~p->irq_sources) & QM_PIRQ_DQRI)
__poll_portal_fast(p, FSL_QMAN_POLL_LIMIT);
}
void qman_stop_dequeues(void)
{
struct qman_portal *p = get_affine_portal();
qman_stop_dequeues_ex(p);
}
void qman_start_dequeues(void)
{
struct qman_portal *p = get_affine_portal();
DPAA_ASSERT(p->dqrr_disable_ref > 0);
if (!(--p->dqrr_disable_ref))
qm_dqrr_set_maxfill(&p->p, DQRR_MAXFILL);
}
void qman_static_dequeue_add(u32 pools)
{
struct qman_portal *p = get_affine_portal();
pools &= p->config->pools;
p->sdqcr |= pools;
qm_dqrr_sdqcr_set(&p->p, p->sdqcr);
}
void qman_static_dequeue_del(u32 pools)
{
struct qman_portal *p = get_affine_portal();
pools &= p->config->pools;
p->sdqcr &= ~pools;
qm_dqrr_sdqcr_set(&p->p, p->sdqcr);
}
u32 qman_static_dequeue_get(void)
{
struct qman_portal *p = get_affine_portal();
return p->sdqcr;
}
void qman_dca(struct qm_dqrr_entry *dq, int park_request)
{
struct qman_portal *p = get_affine_portal();
qm_dqrr_cdc_consume_1ptr(&p->p, dq, park_request);
}
/* Frame queue API */
static const char *mcr_result_str(u8 result)
{
switch (result) {
case QM_MCR_RESULT_NULL:
return "QM_MCR_RESULT_NULL";
case QM_MCR_RESULT_OK:
return "QM_MCR_RESULT_OK";
case QM_MCR_RESULT_ERR_FQID:
return "QM_MCR_RESULT_ERR_FQID";
case QM_MCR_RESULT_ERR_FQSTATE:
return "QM_MCR_RESULT_ERR_FQSTATE";
case QM_MCR_RESULT_ERR_NOTEMPTY:
return "QM_MCR_RESULT_ERR_NOTEMPTY";
case QM_MCR_RESULT_PENDING:
return "QM_MCR_RESULT_PENDING";
case QM_MCR_RESULT_ERR_BADCOMMAND:
return "QM_MCR_RESULT_ERR_BADCOMMAND";
}
return "<unknown MCR result>";
}
int qman_create_fq(u32 fqid, u32 flags, struct qman_fq *fq)
{
struct qm_fqd fqd;
struct qm_mcr_queryfq_np np;
struct qm_mc_command *mcc;
struct qm_mc_result *mcr;
struct qman_portal *p;
if (flags & QMAN_FQ_FLAG_DYNAMIC_FQID) {
int ret = qman_alloc_fqid(&fqid);
if (ret)
return ret;
}
spin_lock_init(&fq->fqlock);
fq->fqid = fqid;
fq->flags = flags;
fq->state = qman_fq_state_oos;
fq->cgr_groupid = 0;
#ifdef CONFIG_FSL_QMAN_FQ_LOOKUP
if (unlikely(find_empty_fq_table_entry(&fq->key, fq))) {
pr_info("Find empty table entry failed\n");
return -ENOMEM;
}
#endif
if (!(flags & QMAN_FQ_FLAG_AS_IS) || (flags & QMAN_FQ_FLAG_NO_MODIFY))
return 0;
/* Everything else is AS_IS support */
p = get_affine_portal();
mcc = qm_mc_start(&p->p);
mcc->queryfq.fqid = cpu_to_be32(fqid);
qm_mc_commit(&p->p, QM_MCC_VERB_QUERYFQ);
while (!(mcr = qm_mc_result(&p->p)))
cpu_relax();
DPAA_ASSERT((mcr->verb & QM_MCR_VERB_MASK) == QM_MCC_VERB_QUERYFQ);
if (mcr->result != QM_MCR_RESULT_OK) {
pr_err("QUERYFQ failed: %s\n", mcr_result_str(mcr->result));
goto err;
}
fqd = mcr->queryfq.fqd;
hw_fqd_to_cpu(&fqd);
mcc = qm_mc_start(&p->p);
mcc->queryfq_np.fqid = cpu_to_be32(fqid);
qm_mc_commit(&p->p, QM_MCC_VERB_QUERYFQ_NP);
while (!(mcr = qm_mc_result(&p->p)))
cpu_relax();
DPAA_ASSERT((mcr->verb & QM_MCR_VERB_MASK) == QM_MCC_VERB_QUERYFQ_NP);
if (mcr->result != QM_MCR_RESULT_OK) {
pr_err("QUERYFQ_NP failed: %s\n", mcr_result_str(mcr->result));
goto err;
}
np = mcr->queryfq_np;
/* Phew, have queryfq and queryfq_np results, stitch together
* the FQ object from those.
*/
fq->cgr_groupid = fqd.cgid;
switch (np.state & QM_MCR_NP_STATE_MASK) {
case QM_MCR_NP_STATE_OOS:
break;
case QM_MCR_NP_STATE_RETIRED:
fq->state = qman_fq_state_retired;
if (np.frm_cnt)
fq_set(fq, QMAN_FQ_STATE_NE);
break;
case QM_MCR_NP_STATE_TEN_SCHED:
case QM_MCR_NP_STATE_TRU_SCHED:
case QM_MCR_NP_STATE_ACTIVE:
fq->state = qman_fq_state_sched;
if (np.state & QM_MCR_NP_STATE_R)
fq_set(fq, QMAN_FQ_STATE_CHANGING);
break;
case QM_MCR_NP_STATE_PARKED:
fq->state = qman_fq_state_parked;
break;
default:
DPAA_ASSERT(NULL == "invalid FQ state");
}
if (fqd.fq_ctrl & QM_FQCTRL_CGE)
fq->state |= QMAN_FQ_STATE_CGR_EN;
return 0;
err:
if (flags & QMAN_FQ_FLAG_DYNAMIC_FQID)
qman_release_fqid(fqid);
return -EIO;
}
void qman_destroy_fq(struct qman_fq *fq, u32 flags __maybe_unused)
{
/*
* We don't need to lock the FQ as it is a pre-condition that the FQ be
* quiesced. Instead, run some checks.
*/
switch (fq->state) {
case qman_fq_state_parked:
DPAA_ASSERT(flags & QMAN_FQ_DESTROY_PARKED);
/* Fallthrough */
case qman_fq_state_oos:
if (fq_isset(fq, QMAN_FQ_FLAG_DYNAMIC_FQID))
qman_release_fqid(fq->fqid);
#ifdef CONFIG_FSL_QMAN_FQ_LOOKUP
clear_fq_table_entry(fq->key);
#endif
return;
default:
break;
}
DPAA_ASSERT(NULL == "qman_free_fq() on unquiesced FQ!");
}
u32 qman_fq_fqid(struct qman_fq *fq)
{
return fq->fqid;
}
void qman_fq_state(struct qman_fq *fq, enum qman_fq_state *state, u32 *flags)
{
if (state)
*state = fq->state;
if (flags)
*flags = fq->flags;
}
int qman_init_fq(struct qman_fq *fq, u32 flags, struct qm_mcc_initfq *opts)
{
struct qm_mc_command *mcc;
struct qm_mc_result *mcr;
struct qman_portal *p;
u8 res, myverb = (flags & QMAN_INITFQ_FLAG_SCHED) ?
QM_MCC_VERB_INITFQ_SCHED : QM_MCC_VERB_INITFQ_PARKED;
if ((fq->state != qman_fq_state_oos) &&
(fq->state != qman_fq_state_parked))
return -EINVAL;
#ifdef RTE_LIBRTE_DPAA_HWDEBUG
if (unlikely(fq_isset(fq, QMAN_FQ_FLAG_NO_MODIFY)))
return -EINVAL;
#endif
if (opts && (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)
return -EINVAL;
}
/* Issue an INITFQ_[PARKED|SCHED] management command */
p = get_affine_portal();
FQLOCK(fq);
if (unlikely((fq_isset(fq, QMAN_FQ_STATE_CHANGING)) ||
((fq->state != qman_fq_state_oos) &&
(fq->state != qman_fq_state_parked)))) {
FQUNLOCK(fq);
return -EBUSY;
}
mcc = qm_mc_start(&p->p);
if (opts)
mcc->initfq = *opts;
mcc->initfq.fqid = cpu_to_be32(fq->fqid);
mcc->initfq.count = 0;
/*
* If the FQ does *not* have the TO_DCPORTAL flag, context_b is set as a
* demux pointer. Otherwise, the caller-provided value is allowed to
* stand, don't overwrite it.
*/
if (fq_isclear(fq, QMAN_FQ_FLAG_TO_DCPORTAL)) {
dma_addr_t phys_fq;
mcc->initfq.we_mask |= QM_INITFQ_WE_CONTEXTB;
#ifdef CONFIG_FSL_QMAN_FQ_LOOKUP
mcc->initfq.fqd.context_b = fq->key;
#else
mcc->initfq.fqd.context_b = (u32)(uintptr_t)fq;
#endif
/*
* 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;
memset(&mcc->initfq.fqd.context_a, 0,
sizeof(mcc->initfq.fqd.context_a));
} else {
phys_fq = rte_mem_virt2iova(fq);
qm_fqd_stashing_set64(&mcc->initfq.fqd, phys_fq);
}
}
if (flags & QMAN_INITFQ_FLAG_LOCAL) {
mcc->initfq.fqd.dest.channel = p->config->channel;
if (!(mcc->initfq.we_mask & QM_INITFQ_WE_DESTWQ)) {
mcc->initfq.we_mask |= QM_INITFQ_WE_DESTWQ;
mcc->initfq.fqd.dest.wq = 4;
}
}
mcc->initfq.we_mask = cpu_to_be16(mcc->initfq.we_mask);
cpu_to_hw_fqd(&mcc->initfq.fqd);
qm_mc_commit(&p->p, myverb);
while (!(mcr = qm_mc_result(&p->p)))
cpu_relax();
DPAA_ASSERT((mcr->verb & QM_MCR_VERB_MASK) == myverb);
res = mcr->result;
if (res != QM_MCR_RESULT_OK) {
FQUNLOCK(fq);
return -EIO;
}
if (opts) {
if (opts->we_mask & QM_INITFQ_WE_FQCTRL) {
if (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)
fq->cgr_groupid = opts->fqd.cgid;
}
fq->state = (flags & QMAN_INITFQ_FLAG_SCHED) ?
qman_fq_state_sched : qman_fq_state_parked;
FQUNLOCK(fq);
return 0;
}
int qman_schedule_fq(struct qman_fq *fq)
{
struct qm_mc_command *mcc;
struct qm_mc_result *mcr;
struct qman_portal *p;
int ret = 0;
u8 res;
if (fq->state != qman_fq_state_parked)
return -EINVAL;
#ifdef RTE_LIBRTE_DPAA_HWDEBUG
if (unlikely(fq_isset(fq, QMAN_FQ_FLAG_NO_MODIFY)))
return -EINVAL;
#endif
/* Issue a ALTERFQ_SCHED management command */
p = get_affine_portal();
FQLOCK(fq);
if (unlikely((fq_isset(fq, QMAN_FQ_STATE_CHANGING)) ||
(fq->state != qman_fq_state_parked))) {
ret = -EBUSY;
goto out;
}
mcc = qm_mc_start(&p->p);
mcc->alterfq.fqid = cpu_to_be32(fq->fqid);
qm_mc_commit(&p->p, QM_MCC_VERB_ALTER_SCHED);
while (!(mcr = qm_mc_result(&p->p)))
cpu_relax();
DPAA_ASSERT((mcr->verb & QM_MCR_VERB_MASK) == QM_MCR_VERB_ALTER_SCHED);
res = mcr->result;
if (res != QM_MCR_RESULT_OK) {
ret = -EIO;
goto out;
}
fq->state = qman_fq_state_sched;
out:
FQUNLOCK(fq);
return ret;
}
int qman_retire_fq(struct qman_fq *fq, u32 *flags)
{
struct qm_mc_command *mcc;
struct qm_mc_result *mcr;
struct qman_portal *p;
int rval;
u8 res;
if ((fq->state != qman_fq_state_parked) &&
(fq->state != qman_fq_state_sched))
return -EINVAL;
#ifdef RTE_LIBRTE_DPAA_HWDEBUG
if (unlikely(fq_isset(fq, QMAN_FQ_FLAG_NO_MODIFY)))
return -EINVAL;
#endif
p = get_affine_portal();
FQLOCK(fq);
if (unlikely((fq_isset(fq, QMAN_FQ_STATE_CHANGING)) ||
(fq->state == qman_fq_state_retired) ||
(fq->state == qman_fq_state_oos))) {
rval = -EBUSY;
goto out;
}
rval = table_push_fq(p, fq);
if (rval)
goto out;
mcc = qm_mc_start(&p->p);
mcc->alterfq.fqid = cpu_to_be32(fq->fqid);
qm_mc_commit(&p->p, QM_MCC_VERB_ALTER_RETIRE);
while (!(mcr = qm_mc_result(&p->p)))
cpu_relax();
DPAA_ASSERT((mcr->verb & QM_MCR_VERB_MASK) == QM_MCR_VERB_ALTER_RETIRE);
res = mcr->result;
/*
* "Elegant" would be to treat OK/PENDING the same way; set CHANGING,
* and defer the flags until FQRNI or FQRN (respectively) show up. But
* "Friendly" is to process OK immediately, and not set CHANGING. We do
* friendly, otherwise the caller doesn't necessarily have a fully
* "retired" FQ on return even if the retirement was immediate. However
* this does mean some code duplication between here and
* fq_state_change().
*/
if (likely(res == QM_MCR_RESULT_OK)) {
rval = 0;
/* Process 'fq' right away, we'll ignore FQRNI */
if (mcr->alterfq.fqs & QM_MCR_FQS_NOTEMPTY)
fq_set(fq, QMAN_FQ_STATE_NE);
if (mcr->alterfq.fqs & QM_MCR_FQS_ORLPRESENT)
fq_set(fq, QMAN_FQ_STATE_ORL);
else
table_del_fq(p, fq);
if (flags)
*flags = fq->flags;
fq->state = qman_fq_state_retired;
if (fq->cb.fqs) {
/*
* Another issue with supporting "immediate" retirement
* is that we're forced to drop FQRNIs, because by the
* time they're seen it may already be "too late" (the
* fq may have been OOS'd and free()'d already). But if
* the upper layer wants a callback whether it's
* immediate or not, we have to fake a "MR" entry to
* look like an FQRNI...
*/
struct qm_mr_entry msg;
msg.verb = QM_MR_VERB_FQRNI;
msg.fq.fqs = mcr->alterfq.fqs;
msg.fq.fqid = fq->fqid;
#ifdef CONFIG_FSL_QMAN_FQ_LOOKUP
msg.fq.contextB = fq->key;
#else
msg.fq.contextB = (u32)(uintptr_t)fq;
#endif
fq->cb.fqs(p, fq, &msg);
}
} else if (res == QM_MCR_RESULT_PENDING) {
rval = 1;
fq_set(fq, QMAN_FQ_STATE_CHANGING);
} else {
rval = -EIO;
table_del_fq(p, fq);
}
out:
FQUNLOCK(fq);
return rval;
}
int qman_oos_fq(struct qman_fq *fq)
{
struct qm_mc_command *mcc;
struct qm_mc_result *mcr;
struct qman_portal *p;
int ret = 0;
u8 res;
if (fq->state != qman_fq_state_retired)
return -EINVAL;
#ifdef RTE_LIBRTE_DPAA_HWDEBUG
if (unlikely(fq_isset(fq, QMAN_FQ_FLAG_NO_MODIFY)))
return -EINVAL;
#endif
p = get_affine_portal();
FQLOCK(fq);
if (unlikely((fq_isset(fq, QMAN_FQ_STATE_BLOCKOOS)) ||
(fq->state != qman_fq_state_retired))) {
ret = -EBUSY;
goto out;
}
mcc = qm_mc_start(&p->p);
mcc->alterfq.fqid = cpu_to_be32(fq->fqid);
qm_mc_commit(&p->p, QM_MCC_VERB_ALTER_OOS);
while (!(mcr = qm_mc_result(&p->p)))
cpu_relax();
DPAA_ASSERT((mcr->verb & QM_MCR_VERB_MASK) == QM_MCR_VERB_ALTER_OOS);
res = mcr->result;
if (res != QM_MCR_RESULT_OK) {
ret = -EIO;
goto out;
}
fq->state = qman_fq_state_oos;
out:
FQUNLOCK(fq);
return ret;
}
int qman_fq_flow_control(struct qman_fq *fq, int xon)
{
struct qm_mc_command *mcc;
struct qm_mc_result *mcr;
struct qman_portal *p;
int ret = 0;
u8 res;
u8 myverb;
if ((fq->state == qman_fq_state_oos) ||
(fq->state == qman_fq_state_retired) ||
(fq->state == qman_fq_state_parked))
return -EINVAL;
#ifdef RTE_LIBRTE_DPAA_HWDEBUG
if (unlikely(fq_isset(fq, QMAN_FQ_FLAG_NO_MODIFY)))
return -EINVAL;
#endif
/* Issue a ALTER_FQXON or ALTER_FQXOFF management command */
p = get_affine_portal();
FQLOCK(fq);
if (unlikely((fq_isset(fq, QMAN_FQ_STATE_CHANGING)) ||
(fq->state == qman_fq_state_parked) ||
(fq->state == qman_fq_state_oos) ||
(fq->state == qman_fq_state_retired))) {
ret = -EBUSY;
goto out;
}
mcc = qm_mc_start(&p->p);
mcc->alterfq.fqid = fq->fqid;
mcc->alterfq.count = 0;
myverb = xon ? QM_MCC_VERB_ALTER_FQXON : QM_MCC_VERB_ALTER_FQXOFF;
qm_mc_commit(&p->p, myverb);
while (!(mcr = qm_mc_result(&p->p)))
cpu_relax();
DPAA_ASSERT((mcr->verb & QM_MCR_VERB_MASK) == myverb);
res = mcr->result;
if (res != QM_MCR_RESULT_OK) {
ret = -EIO;
goto out;
}
out:
FQUNLOCK(fq);
return ret;
}
int qman_query_fq(struct qman_fq *fq, struct qm_fqd *fqd)
{
struct qm_mc_command *mcc;
struct qm_mc_result *mcr;
struct qman_portal *p = get_affine_portal();
u8 res;
mcc = qm_mc_start(&p->p);
mcc->queryfq.fqid = cpu_to_be32(fq->fqid);
qm_mc_commit(&p->p, QM_MCC_VERB_QUERYFQ);
while (!(mcr = qm_mc_result(&p->p)))
cpu_relax();
DPAA_ASSERT((mcr->verb & QM_MCR_VERB_MASK) == QM_MCR_VERB_QUERYFQ);
res = mcr->result;
if (res == QM_MCR_RESULT_OK)
*fqd = mcr->queryfq.fqd;
hw_fqd_to_cpu(fqd);
if (res != QM_MCR_RESULT_OK)
return -EIO;
return 0;
}
int qman_query_fq_has_pkts(struct qman_fq *fq)
{
struct qm_mc_command *mcc;
struct qm_mc_result *mcr;
struct qman_portal *p = get_affine_portal();
int ret = 0;
u8 res;
mcc = qm_mc_start(&p->p);
mcc->queryfq.fqid = cpu_to_be32(fq->fqid);
qm_mc_commit(&p->p, QM_MCC_VERB_QUERYFQ_NP);
while (!(mcr = qm_mc_result(&p->p)))
cpu_relax();
res = mcr->result;
if (res == QM_MCR_RESULT_OK)
ret = !!mcr->queryfq_np.frm_cnt;
return ret;
}
int qman_query_fq_np(struct qman_fq *fq, struct qm_mcr_queryfq_np *np)
{
struct qm_mc_command *mcc;
struct qm_mc_result *mcr;
struct qman_portal *p = get_affine_portal();
u8 res;
mcc = qm_mc_start(&p->p);
mcc->queryfq.fqid = cpu_to_be32(fq->fqid);
qm_mc_commit(&p->p, QM_MCC_VERB_QUERYFQ_NP);
while (!(mcr = qm_mc_result(&p->p)))
cpu_relax();
DPAA_ASSERT((mcr->verb & QM_MCR_VERB_MASK) == QM_MCR_VERB_QUERYFQ_NP);
res = mcr->result;
if (res == QM_MCR_RESULT_OK) {
*np = mcr->queryfq_np;
np->fqd_link = be24_to_cpu(np->fqd_link);
np->odp_seq = be16_to_cpu(np->odp_seq);
np->orp_nesn = be16_to_cpu(np->orp_nesn);
np->orp_ea_hseq = be16_to_cpu(np->orp_ea_hseq);
np->orp_ea_tseq = be16_to_cpu(np->orp_ea_tseq);
np->orp_ea_hptr = be24_to_cpu(np->orp_ea_hptr);
np->orp_ea_tptr = be24_to_cpu(np->orp_ea_tptr);
np->pfdr_hptr = be24_to_cpu(np->pfdr_hptr);
np->pfdr_tptr = be24_to_cpu(np->pfdr_tptr);
np->ics_surp = be16_to_cpu(np->ics_surp);
np->byte_cnt = be32_to_cpu(np->byte_cnt);
np->frm_cnt = be24_to_cpu(np->frm_cnt);
np->ra1_sfdr = be16_to_cpu(np->ra1_sfdr);
np->ra2_sfdr = be16_to_cpu(np->ra2_sfdr);
np->od1_sfdr = be16_to_cpu(np->od1_sfdr);
np->od2_sfdr = be16_to_cpu(np->od2_sfdr);
np->od3_sfdr = be16_to_cpu(np->od3_sfdr);
}
if (res == QM_MCR_RESULT_ERR_FQID)
return -ERANGE;
else if (res != QM_MCR_RESULT_OK)
return -EIO;
return 0;
}
int qman_query_wq(u8 query_dedicated, struct qm_mcr_querywq *wq)
{
struct qm_mc_command *mcc;
struct qm_mc_result *mcr;
struct qman_portal *p = get_affine_portal();
u8 res, myverb;
myverb = (query_dedicated) ? QM_MCR_VERB_QUERYWQ_DEDICATED :
QM_MCR_VERB_QUERYWQ;
mcc = qm_mc_start(&p->p);
mcc->querywq.channel.id = cpu_to_be16(wq->channel.id);
qm_mc_commit(&p->p, myverb);
while (!(mcr = qm_mc_result(&p->p)))
cpu_relax();
DPAA_ASSERT((mcr->verb & QM_MCR_VERB_MASK) == myverb);
res = mcr->result;
if (res == QM_MCR_RESULT_OK) {
int i, array_len;
wq->channel.id = be16_to_cpu(mcr->querywq.channel.id);
array_len = ARRAY_SIZE(mcr->querywq.wq_len);
for (i = 0; i < array_len; i++)
wq->wq_len[i] = be32_to_cpu(mcr->querywq.wq_len[i]);
}
if (res != QM_MCR_RESULT_OK) {
pr_err("QUERYWQ failed: %s\n", mcr_result_str(res));
return -EIO;
}
return 0;
}
int qman_testwrite_cgr(struct qman_cgr *cgr, u64 i_bcnt,
struct qm_mcr_cgrtestwrite *result)
{
struct qm_mc_command *mcc;
struct qm_mc_result *mcr;
struct qman_portal *p = get_affine_portal();
u8 res;
mcc = qm_mc_start(&p->p);
mcc->cgrtestwrite.cgid = cgr->cgrid;
mcc->cgrtestwrite.i_bcnt_hi = (u8)(i_bcnt >> 32);
mcc->cgrtestwrite.i_bcnt_lo = (u32)i_bcnt;
qm_mc_commit(&p->p, QM_MCC_VERB_CGRTESTWRITE);
while (!(mcr = qm_mc_result(&p->p)))
cpu_relax();
DPAA_ASSERT((mcr->verb & QM_MCR_VERB_MASK) == QM_MCC_VERB_CGRTESTWRITE);
res = mcr->result;
if (res == QM_MCR_RESULT_OK)
*result = mcr->cgrtestwrite;
if (res != QM_MCR_RESULT_OK) {
pr_err("CGR TEST WRITE failed: %s\n", mcr_result_str(res));
return -EIO;
}
return 0;
}
int qman_query_cgr(struct qman_cgr *cgr, struct qm_mcr_querycgr *cgrd)
{
struct qm_mc_command *mcc;
struct qm_mc_result *mcr;
struct qman_portal *p = get_affine_portal();
u8 res;
unsigned int i;
mcc = qm_mc_start(&p->p);
mcc->querycgr.cgid = cgr->cgrid;
qm_mc_commit(&p->p, QM_MCC_VERB_QUERYCGR);
while (!(mcr = qm_mc_result(&p->p)))
cpu_relax();
DPAA_ASSERT((mcr->verb & QM_MCR_VERB_MASK) == QM_MCC_VERB_QUERYCGR);
res = mcr->result;
if (res == QM_MCR_RESULT_OK)
*cgrd = mcr->querycgr;
if (res != QM_MCR_RESULT_OK) {
pr_err("QUERY_CGR failed: %s\n", mcr_result_str(res));
return -EIO;
}
cgrd->cgr.wr_parm_g.word =
be32_to_cpu(cgrd->cgr.wr_parm_g.word);
cgrd->cgr.wr_parm_y.word =
be32_to_cpu(cgrd->cgr.wr_parm_y.word);
cgrd->cgr.wr_parm_r.word =
be32_to_cpu(cgrd->cgr.wr_parm_r.word);
cgrd->cgr.cscn_targ = be32_to_cpu(cgrd->cgr.cscn_targ);
cgrd->cgr.__cs_thres = be16_to_cpu(cgrd->cgr.__cs_thres);
for (i = 0; i < ARRAY_SIZE(cgrd->cscn_targ_swp); i++)
cgrd->cscn_targ_swp[i] =
be32_to_cpu(cgrd->cscn_targ_swp[i]);
return 0;
}
int qman_query_congestion(struct qm_mcr_querycongestion *congestion)
{
struct qm_mc_result *mcr;
struct qman_portal *p = get_affine_portal();
u8 res;
unsigned int i;
qm_mc_start(&p->p);
qm_mc_commit(&p->p, QM_MCC_VERB_QUERYCONGESTION);
while (!(mcr = qm_mc_result(&p->p)))
cpu_relax();
DPAA_ASSERT((mcr->verb & QM_MCR_VERB_MASK) ==
QM_MCC_VERB_QUERYCONGESTION);
res = mcr->result;
if (res == QM_MCR_RESULT_OK)
*congestion = mcr->querycongestion;
if (res != QM_MCR_RESULT_OK) {
pr_err("QUERY_CONGESTION failed: %s\n", mcr_result_str(res));
return -EIO;
}
for (i = 0; i < ARRAY_SIZE(congestion->state.state); i++)
congestion->state.state[i] =
be32_to_cpu(congestion->state.state[i]);
return 0;
}
int qman_set_vdq(struct qman_fq *fq, u16 num)
{
struct qman_portal *p = get_affine_portal();
uint32_t vdqcr;
int ret = -EBUSY;
vdqcr = QM_VDQCR_EXACT;
vdqcr |= QM_VDQCR_NUMFRAMES_SET(num);
if ((fq->state != qman_fq_state_parked) &&
(fq->state != qman_fq_state_retired)) {
ret = -EINVAL;
goto out;
}
if (fq_isset(fq, QMAN_FQ_STATE_VDQCR)) {
ret = -EBUSY;
goto out;
}
vdqcr = (vdqcr & ~QM_VDQCR_FQID_MASK) | fq->fqid;
if (!p->vdqcr_owned) {
FQLOCK(fq);
if (fq_isset(fq, QMAN_FQ_STATE_VDQCR))
goto escape;
fq_set(fq, QMAN_FQ_STATE_VDQCR);
FQUNLOCK(fq);
p->vdqcr_owned = fq;
ret = 0;
}
escape:
if (!ret)
qm_dqrr_vdqcr_set(&p->p, vdqcr);
out:
return ret;
}
int qman_volatile_dequeue(struct qman_fq *fq, u32 flags __maybe_unused,
u32 vdqcr)
{
struct qman_portal *p;
int ret = -EBUSY;
if ((fq->state != qman_fq_state_parked) &&
(fq->state != qman_fq_state_retired))
return -EINVAL;
if (vdqcr & QM_VDQCR_FQID_MASK)
return -EINVAL;
if (fq_isset(fq, QMAN_FQ_STATE_VDQCR))
return -EBUSY;
vdqcr = (vdqcr & ~QM_VDQCR_FQID_MASK) | fq->fqid;
p = get_affine_portal();
if (!p->vdqcr_owned) {
FQLOCK(fq);
if (fq_isset(fq, QMAN_FQ_STATE_VDQCR))
goto escape;
fq_set(fq, QMAN_FQ_STATE_VDQCR);
FQUNLOCK(fq);
p->vdqcr_owned = fq;
ret = 0;
}
escape:
if (ret)
return ret;
/* VDQCR is set */
qm_dqrr_vdqcr_set(&p->p, vdqcr);
return 0;
}
static noinline void update_eqcr_ci(struct qman_portal *p, u8 avail)
{
if (avail)
qm_eqcr_cce_prefetch(&p->p);
else
qm_eqcr_cce_update(&p->p);
}
int qman_eqcr_is_empty(void)
{
struct qman_portal *p = get_affine_portal();
u8 avail;
update_eqcr_ci(p, 0);
avail = qm_eqcr_get_fill(&p->p);
return (avail == 0);
}
void qman_set_dc_ern(qman_cb_dc_ern handler, int affine)
{
if (affine) {
struct qman_portal *p = get_affine_portal();
p->cb_dc_ern = handler;
} else
cb_dc_ern = handler;
}
static inline struct qm_eqcr_entry *try_p_eq_start(struct qman_portal *p,
struct qman_fq *fq,
const struct qm_fd *fd,
u32 flags)
{
struct qm_eqcr_entry *eq;
u8 avail;
if (p->use_eqcr_ci_stashing) {
/*
* The stashing case is easy, only update if we need to in
* order to try and liberate ring entries.
*/
eq = qm_eqcr_start_stash(&p->p);
} else {
/*
* The non-stashing case is harder, need to prefetch ahead of
* time.
*/
avail = qm_eqcr_get_avail(&p->p);
if (avail < 2)
update_eqcr_ci(p, avail);
eq = qm_eqcr_start_no_stash(&p->p);
}
if (unlikely(!eq))
return NULL;
if (flags & QMAN_ENQUEUE_FLAG_DCA)
eq->dca = QM_EQCR_DCA_ENABLE |
((flags & QMAN_ENQUEUE_FLAG_DCA_PARK) ?
QM_EQCR_DCA_PARK : 0) |
((flags >> 8) & QM_EQCR_DCA_IDXMASK);
eq->fqid = cpu_to_be32(fq->fqid);
#ifdef CONFIG_FSL_QMAN_FQ_LOOKUP
eq->tag = cpu_to_be32(fq->key);
#else
eq->tag = cpu_to_be32((u32)(uintptr_t)fq);
#endif
eq->fd = *fd;
cpu_to_hw_fd(&eq->fd);
return eq;
}
int qman_enqueue(struct qman_fq *fq, const struct qm_fd *fd, u32 flags)
{
struct qman_portal *p = get_affine_portal();
struct qm_eqcr_entry *eq;
eq = try_p_eq_start(p, fq, fd, flags);
if (!eq)
return -EBUSY;
/* Note: QM_EQCR_VERB_INTERRUPT == QMAN_ENQUEUE_FLAG_WAIT_SYNC */
qm_eqcr_pvb_commit(&p->p, QM_EQCR_VERB_CMD_ENQUEUE |
(flags & (QM_EQCR_VERB_COLOUR_MASK | QM_EQCR_VERB_INTERRUPT)));
/* Factor the below out, it's used from qman_enqueue_orp() too */
return 0;
}
int qman_enqueue_multi(struct qman_fq *fq,
const struct qm_fd *fd,
int frames_to_send)
{
struct qman_portal *p = get_affine_portal();
struct qm_portal *portal = &p->p;
register struct qm_eqcr *eqcr = &portal->eqcr;
struct qm_eqcr_entry *eq = eqcr->cursor, *prev_eq;
u8 i, diff, old_ci, sent = 0;
/* Update the available entries if no entry is free */
if (!eqcr->available) {
old_ci = eqcr->ci;
eqcr->ci = qm_cl_in(EQCR_CI) & (QM_EQCR_SIZE - 1);
diff = qm_cyc_diff(QM_EQCR_SIZE, old_ci, eqcr->ci);
eqcr->available += diff;
if (!diff)
return 0;
}
/* try to send as many frames as possible */
while (eqcr->available && frames_to_send--) {
eq->fqid = cpu_to_be32(fq->fqid);
#ifdef CONFIG_FSL_QMAN_FQ_LOOKUP
eq->tag = cpu_to_be32(fq->key);
#else
eq->tag = cpu_to_be32((u32)(uintptr_t)fq);
#endif
eq->fd.opaque_addr = fd->opaque_addr;
eq->fd.addr = cpu_to_be40(fd->addr);
eq->fd.status = cpu_to_be32(fd->status);
eq->fd.opaque = cpu_to_be32(fd->opaque);
eq = (void *)((unsigned long)(eq + 1) &
(~(unsigned long)(QM_EQCR_SIZE << 6)));
eqcr->available--;
sent++;
fd++;
}
lwsync();
/* In order for flushes to complete faster, all lines are recorded in
* 32 bit word.
*/
eq = eqcr->cursor;
for (i = 0; i < sent; i++) {
eq->__dont_write_directly__verb =
QM_EQCR_VERB_CMD_ENQUEUE | eqcr->vbit;
prev_eq = eq;
eq = (void *)((unsigned long)(eq + 1) &
(~(unsigned long)(QM_EQCR_SIZE << 6)));
if (unlikely((prev_eq + 1) != eq))
eqcr->vbit ^= QM_EQCR_VERB_VBIT;
}
/* We need to flush all the lines but without load/store operations
* between them
*/
eq = eqcr->cursor;
for (i = 0; i < sent; i++) {
dcbf(eq);
eq = (void *)((unsigned long)(eq + 1) &
(~(unsigned long)(QM_EQCR_SIZE << 6)));
}
/* Update cursor for the next call */
eqcr->cursor = eq;
return sent;
}
int qman_enqueue_orp(struct qman_fq *fq, const struct qm_fd *fd, u32 flags,
struct qman_fq *orp, u16 orp_seqnum)
{
struct qman_portal *p = get_affine_portal();
struct qm_eqcr_entry *eq;
eq = try_p_eq_start(p, fq, fd, flags);
if (!eq)
return -EBUSY;
/* Process ORP-specifics here */
if (flags & QMAN_ENQUEUE_FLAG_NLIS)
orp_seqnum |= QM_EQCR_SEQNUM_NLIS;
else {
orp_seqnum &= ~QM_EQCR_SEQNUM_NLIS;
if (flags & QMAN_ENQUEUE_FLAG_NESN)
orp_seqnum |= QM_EQCR_SEQNUM_NESN;
else
/* No need to check 4 QMAN_ENQUEUE_FLAG_HOLE */
orp_seqnum &= ~QM_EQCR_SEQNUM_NESN;
}
eq->seqnum = cpu_to_be16(orp_seqnum);
eq->orp = cpu_to_be32(orp->fqid);
/* Note: QM_EQCR_VERB_INTERRUPT == QMAN_ENQUEUE_FLAG_WAIT_SYNC */
qm_eqcr_pvb_commit(&p->p, QM_EQCR_VERB_ORP |
((flags & (QMAN_ENQUEUE_FLAG_HOLE | QMAN_ENQUEUE_FLAG_NESN)) ?
0 : QM_EQCR_VERB_CMD_ENQUEUE) |
(flags & (QM_EQCR_VERB_COLOUR_MASK | QM_EQCR_VERB_INTERRUPT)));
return 0;
}
int qman_modify_cgr(struct qman_cgr *cgr, u32 flags,
struct qm_mcc_initcgr *opts)
{
struct qm_mc_command *mcc;
struct qm_mc_result *mcr;
struct qman_portal *p = get_affine_portal();
u8 res;
u8 verb = QM_MCC_VERB_MODIFYCGR;
mcc = qm_mc_start(&p->p);
if (opts)
mcc->initcgr = *opts;
mcc->initcgr.we_mask = cpu_to_be16(mcc->initcgr.we_mask);
mcc->initcgr.cgr.wr_parm_g.word =
cpu_to_be32(mcc->initcgr.cgr.wr_parm_g.word);
mcc->initcgr.cgr.wr_parm_y.word =
cpu_to_be32(mcc->initcgr.cgr.wr_parm_y.word);
mcc->initcgr.cgr.wr_parm_r.word =
cpu_to_be32(mcc->initcgr.cgr.wr_parm_r.word);
mcc->initcgr.cgr.cscn_targ = cpu_to_be32(mcc->initcgr.cgr.cscn_targ);
mcc->initcgr.cgr.__cs_thres = cpu_to_be16(mcc->initcgr.cgr.__cs_thres);
mcc->initcgr.cgid = cgr->cgrid;
if (flags & QMAN_CGR_FLAG_USE_INIT)
verb = QM_MCC_VERB_INITCGR;
qm_mc_commit(&p->p, verb);
while (!(mcr = qm_mc_result(&p->p)))
cpu_relax();
DPAA_ASSERT((mcr->verb & QM_MCR_VERB_MASK) == verb);
res = mcr->result;
return (res == QM_MCR_RESULT_OK) ? 0 : -EIO;
}
#define TARG_MASK(n) (0x80000000 >> (n->config->channel - \
QM_CHANNEL_SWPORTAL0))
#define TARG_DCP_MASK(n) (0x80000000 >> (10 + n))
#define PORTAL_IDX(n) (n->config->channel - QM_CHANNEL_SWPORTAL0)
int qman_create_cgr(struct qman_cgr *cgr, u32 flags,
struct qm_mcc_initcgr *opts)
{
struct qm_mcr_querycgr cgr_state;
struct qm_mcc_initcgr local_opts;
int ret;
struct qman_portal *p;
/* We have to check that the provided CGRID is within the limits of the
* data-structures, for obvious reasons. However we'll let h/w take
* care of determining whether it's within the limits of what exists on
* the SoC.
*/
if (cgr->cgrid >= __CGR_NUM)
return -EINVAL;
p = get_affine_portal();
memset(&local_opts, 0, sizeof(struct qm_mcc_initcgr));
cgr->chan = p->config->channel;
spin_lock(&p->cgr_lock);
/* if no opts specified, just add it to the list */
if (!opts)
goto add_list;
ret = qman_query_cgr(cgr, &cgr_state);
if (ret)
goto release_lock;
if (opts)
local_opts = *opts;
if ((qman_ip_rev & 0xFF00) >= QMAN_REV30)
local_opts.cgr.cscn_targ_upd_ctrl =
QM_CGR_TARG_UDP_CTRL_WRITE_BIT | PORTAL_IDX(p);
else
/* Overwrite TARG */
local_opts.cgr.cscn_targ = cgr_state.cgr.cscn_targ |
TARG_MASK(p);
local_opts.we_mask |= QM_CGR_WE_CSCN_TARG;
/* send init if flags indicate so */
if (opts && (flags & QMAN_CGR_FLAG_USE_INIT))
ret = qman_modify_cgr(cgr, QMAN_CGR_FLAG_USE_INIT, &local_opts);
else
ret = qman_modify_cgr(cgr, 0, &local_opts);
if (ret)
goto release_lock;
add_list:
list_add(&cgr->node, &p->cgr_cbs);
/* Determine if newly added object requires its callback to be called */
ret = qman_query_cgr(cgr, &cgr_state);
if (ret) {
/* we can't go back, so proceed and return success, but screen
* and wail to the log file.
*/
pr_crit("CGR HW state partially modified\n");
ret = 0;
goto release_lock;
}
if (cgr->cb && cgr_state.cgr.cscn_en && qman_cgrs_get(&p->cgrs[1],
cgr->cgrid))
cgr->cb(p, cgr, 1);
release_lock:
spin_unlock(&p->cgr_lock);
return ret;
}
int qman_create_cgr_to_dcp(struct qman_cgr *cgr, u32 flags, u16 dcp_portal,
struct qm_mcc_initcgr *opts)
{
struct qm_mcc_initcgr local_opts;
struct qm_mcr_querycgr cgr_state;
int ret;
if ((qman_ip_rev & 0xFF00) < QMAN_REV30) {
pr_warn("QMan version doesn't support CSCN => DCP portal\n");
return -EINVAL;
}
/* We have to check that the provided CGRID is within the limits of the
* data-structures, for obvious reasons. However we'll let h/w take
* care of determining whether it's within the limits of what exists on
* the SoC.
*/
if (cgr->cgrid >= __CGR_NUM)
return -EINVAL;
ret = qman_query_cgr(cgr, &cgr_state);
if (ret)
return ret;
memset(&local_opts, 0, sizeof(struct qm_mcc_initcgr));
if (opts)
local_opts = *opts;
if ((qman_ip_rev & 0xFF00) >= QMAN_REV30)
local_opts.cgr.cscn_targ_upd_ctrl =
QM_CGR_TARG_UDP_CTRL_WRITE_BIT |
QM_CGR_TARG_UDP_CTRL_DCP | dcp_portal;
else
local_opts.cgr.cscn_targ = cgr_state.cgr.cscn_targ |
TARG_DCP_MASK(dcp_portal);
local_opts.we_mask |= QM_CGR_WE_CSCN_TARG;
/* send init if flags indicate so */
if (opts && (flags & QMAN_CGR_FLAG_USE_INIT))
ret = qman_modify_cgr(cgr, QMAN_CGR_FLAG_USE_INIT,
&local_opts);
else
ret = qman_modify_cgr(cgr, 0, &local_opts);
return ret;
}
int qman_delete_cgr(struct qman_cgr *cgr)
{
struct qm_mcr_querycgr cgr_state;
struct qm_mcc_initcgr local_opts;
int ret = 0;
struct qman_cgr *i;
struct qman_portal *p = get_affine_portal();
if (cgr->chan != p->config->channel) {
pr_crit("Attempting to delete cgr from different portal than"
" it was create: create 0x%x, delete 0x%x\n",
cgr->chan, p->config->channel);
ret = -EINVAL;
goto put_portal;
}
memset(&local_opts, 0, sizeof(struct qm_mcc_initcgr));
spin_lock(&p->cgr_lock);
list_del(&cgr->node);
/*
* If there are no other CGR objects for this CGRID in the list,
* update CSCN_TARG accordingly
*/
list_for_each_entry(i, &p->cgr_cbs, node)
if ((i->cgrid == cgr->cgrid) && i->cb)
goto release_lock;
ret = qman_query_cgr(cgr, &cgr_state);
if (ret) {
/* add back to the list */
list_add(&cgr->node, &p->cgr_cbs);
goto release_lock;
}
/* Overwrite TARG */
local_opts.we_mask = QM_CGR_WE_CSCN_TARG;
if ((qman_ip_rev & 0xFF00) >= QMAN_REV30)
local_opts.cgr.cscn_targ_upd_ctrl = PORTAL_IDX(p);
else
local_opts.cgr.cscn_targ = cgr_state.cgr.cscn_targ &
~(TARG_MASK(p));
ret = qman_modify_cgr(cgr, 0, &local_opts);
if (ret)
/* add back to the list */
list_add(&cgr->node, &p->cgr_cbs);
release_lock:
spin_unlock(&p->cgr_lock);
put_portal:
return ret;
}
int qman_shutdown_fq(u32 fqid)
{
struct qman_portal *p;
struct qm_portal *low_p;
struct qm_mc_command *mcc;
struct qm_mc_result *mcr;
u8 state;
int orl_empty, fq_empty, drain = 0;
u32 result;
u32 channel, wq;
u16 dest_wq;
p = get_affine_portal();
low_p = &p->p;
/* Determine the state of the FQID */
mcc = qm_mc_start(low_p);
mcc->queryfq_np.fqid = cpu_to_be32(fqid);
qm_mc_commit(low_p, QM_MCC_VERB_QUERYFQ_NP);
while (!(mcr = qm_mc_result(low_p)))
cpu_relax();
DPAA_ASSERT((mcr->verb & QM_MCR_VERB_MASK) == QM_MCR_VERB_QUERYFQ_NP);
state = mcr->queryfq_np.state & QM_MCR_NP_STATE_MASK;
if (state == QM_MCR_NP_STATE_OOS)
return 0; /* Already OOS, no need to do anymore checks */
/* Query which channel the FQ is using */
mcc = qm_mc_start(low_p);
mcc->queryfq.fqid = cpu_to_be32(fqid);
qm_mc_commit(low_p, QM_MCC_VERB_QUERYFQ);
while (!(mcr = qm_mc_result(low_p)))
cpu_relax();
DPAA_ASSERT((mcr->verb & QM_MCR_VERB_MASK) == QM_MCR_VERB_QUERYFQ);
/* Need to store these since the MCR gets reused */
dest_wq = be16_to_cpu(mcr->queryfq.fqd.dest_wq);
channel = dest_wq & 0x7;
wq = dest_wq >> 3;
switch (state) {
case QM_MCR_NP_STATE_TEN_SCHED:
case QM_MCR_NP_STATE_TRU_SCHED:
case QM_MCR_NP_STATE_ACTIVE:
case QM_MCR_NP_STATE_PARKED:
orl_empty = 0;
mcc = qm_mc_start(low_p);
mcc->alterfq.fqid = cpu_to_be32(fqid);
qm_mc_commit(low_p, QM_MCC_VERB_ALTER_RETIRE);
while (!(mcr = qm_mc_result(low_p)))
cpu_relax();
DPAA_ASSERT((mcr->verb & QM_MCR_VERB_MASK) ==
QM_MCR_VERB_ALTER_RETIRE);
result = mcr->result; /* Make a copy as we reuse MCR below */
if (result == QM_MCR_RESULT_PENDING) {
/* Need to wait for the FQRN in the message ring, which
* will only occur once the FQ has been drained. In
* order for the FQ to drain the portal needs to be set
* to dequeue from the channel the FQ is scheduled on
*/
const struct qm_mr_entry *msg;
const struct qm_dqrr_entry *dqrr = NULL;
int found_fqrn = 0;
__maybe_unused u16 dequeue_wq = 0;
/* Flag that we need to drain FQ */
drain = 1;
if (channel >= qm_channel_pool1 &&
channel < (u16)(qm_channel_pool1 + 15)) {
/* Pool channel, enable the bit in the portal */
dequeue_wq = (channel -
qm_channel_pool1 + 1) << 4 | wq;
} else if (channel < qm_channel_pool1) {
/* Dedicated channel */
dequeue_wq = wq;
} else {
pr_info("Cannot recover FQ 0x%x,"
" it is scheduled on channel 0x%x",
fqid, channel);
return -EBUSY;
}
/* Set the sdqcr to drain this channel */
if (channel < qm_channel_pool1)
qm_dqrr_sdqcr_set(low_p,
QM_SDQCR_TYPE_ACTIVE |
QM_SDQCR_CHANNELS_DEDICATED);
else
qm_dqrr_sdqcr_set(low_p,
QM_SDQCR_TYPE_ACTIVE |
QM_SDQCR_CHANNELS_POOL_CONV
(channel));
while (!found_fqrn) {
/* Keep draining DQRR while checking the MR*/
qm_dqrr_pvb_update(low_p);
dqrr = qm_dqrr_current(low_p);
while (dqrr) {
qm_dqrr_cdc_consume_1ptr(
low_p, dqrr, 0);
qm_dqrr_pvb_update(low_p);
qm_dqrr_next(low_p);
dqrr = qm_dqrr_current(low_p);
}
/* Process message ring too */
qm_mr_pvb_update(low_p);
msg = qm_mr_current(low_p);
while (msg) {
if ((msg->verb &
QM_MR_VERB_TYPE_MASK)
== QM_MR_VERB_FQRN)
found_fqrn = 1;
qm_mr_next(low_p);
qm_mr_cci_consume_to_current(low_p);
qm_mr_pvb_update(low_p);
msg = qm_mr_current(low_p);
}
cpu_relax();
}
}
if (result != QM_MCR_RESULT_OK &&
result != QM_MCR_RESULT_PENDING) {
/* error */
pr_err("qman_retire_fq failed on FQ 0x%x,"
" result=0x%x\n", fqid, result);
return -1;
}
if (!(mcr->alterfq.fqs & QM_MCR_FQS_ORLPRESENT)) {
/* ORL had no entries, no need to wait until the
* ERNs come in.
*/
orl_empty = 1;
}
/* Retirement succeeded, check to see if FQ needs
* to be drained.
*/
if (drain || mcr->alterfq.fqs & QM_MCR_FQS_NOTEMPTY) {
/* FQ is Not Empty, drain using volatile DQ commands */
fq_empty = 0;
do {
const struct qm_dqrr_entry *dqrr = NULL;
u32 vdqcr = fqid | QM_VDQCR_NUMFRAMES_SET(3);
qm_dqrr_vdqcr_set(low_p, vdqcr);
/* Wait for a dequeue to occur */
while (dqrr == NULL) {
qm_dqrr_pvb_update(low_p);
dqrr = qm_dqrr_current(low_p);
if (!dqrr)
cpu_relax();
}
/* Process the dequeues, making sure to
* empty the ring completely.
*/
while (dqrr) {
if (dqrr->fqid == fqid &&
dqrr->stat & QM_DQRR_STAT_FQ_EMPTY)
fq_empty = 1;
qm_dqrr_cdc_consume_1ptr(low_p,
dqrr, 0);
qm_dqrr_pvb_update(low_p);
qm_dqrr_next(low_p);
dqrr = qm_dqrr_current(low_p);
}
} while (fq_empty == 0);
}
qm_dqrr_sdqcr_set(low_p, 0);
/* Wait for the ORL to have been completely drained */
while (orl_empty == 0) {
const struct qm_mr_entry *msg;
qm_mr_pvb_update(low_p);
msg = qm_mr_current(low_p);
while (msg) {
if ((msg->verb & QM_MR_VERB_TYPE_MASK) ==
QM_MR_VERB_FQRL)
orl_empty = 1;
qm_mr_next(low_p);
qm_mr_cci_consume_to_current(low_p);
qm_mr_pvb_update(low_p);
msg = qm_mr_current(low_p);
}
cpu_relax();
}
mcc = qm_mc_start(low_p);
mcc->alterfq.fqid = cpu_to_be32(fqid);
qm_mc_commit(low_p, QM_MCC_VERB_ALTER_OOS);
while (!(mcr = qm_mc_result(low_p)))
cpu_relax();
DPAA_ASSERT((mcr->verb & QM_MCR_VERB_MASK) ==
QM_MCR_VERB_ALTER_OOS);
if (mcr->result != QM_MCR_RESULT_OK) {
pr_err(
"OOS after drain Failed on FQID 0x%x, result 0x%x\n",
fqid, mcr->result);
return -1;
}
return 0;
case QM_MCR_NP_STATE_RETIRED:
/* Send OOS Command */
mcc = qm_mc_start(low_p);
mcc->alterfq.fqid = cpu_to_be32(fqid);
qm_mc_commit(low_p, QM_MCC_VERB_ALTER_OOS);
while (!(mcr = qm_mc_result(low_p)))
cpu_relax();
DPAA_ASSERT((mcr->verb & QM_MCR_VERB_MASK) ==
QM_MCR_VERB_ALTER_OOS);
if (mcr->result) {
pr_err("OOS Failed on FQID 0x%x\n", fqid);
return -1;
}
return 0;
}
return -1;
}
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