From f6fadc3e631078e23ddc3b53dda5b8f19a10e44d Mon Sep 17 00:00:00 2001 From: Shreyansh Jain Date: Thu, 28 Sep 2017 17:59:30 +0530 Subject: [PATCH] bus/dpaa: add QMAN interface driver The Queue Manager (QMan) is a hardware queue management block that allows software and accelerators on the datapath to enqueue and dequeue frames in order to communicate. This part of QBMAN DPAA Block. Signed-off-by: Geoff Thorpe Signed-off-by: Roy Pledge Signed-off-by: Hemant Agrawal Signed-off-by: Shreyansh Jain --- drivers/bus/dpaa/Makefile | 1 + drivers/bus/dpaa/base/qbman/qman_driver.c | 271 +++++ drivers/bus/dpaa/base/qbman/qman_priv.h | 303 +++++ drivers/bus/dpaa/include/fsl_qman.h | 1254 +++++++++++++++++++++ drivers/bus/dpaa/include/fsl_usd.h | 13 + 5 files changed, 1842 insertions(+) create mode 100644 drivers/bus/dpaa/base/qbman/qman_driver.c create mode 100644 drivers/bus/dpaa/base/qbman/qman_priv.h create mode 100644 drivers/bus/dpaa/include/fsl_qman.h diff --git a/drivers/bus/dpaa/Makefile b/drivers/bus/dpaa/Makefile index 5b76a4bc04..c9c15f840d 100644 --- a/drivers/bus/dpaa/Makefile +++ b/drivers/bus/dpaa/Makefile @@ -63,6 +63,7 @@ SRCS-$(CONFIG_RTE_LIBRTE_DPAA_BUS) += \ base/fman/of.c \ base/fman/netcfg_layer.c \ base/qbman/process.c \ + base/qbman/qman_driver.c \ base/qbman/dpaa_sys.c # Link Pthread diff --git a/drivers/bus/dpaa/base/qbman/qman_driver.c b/drivers/bus/dpaa/base/qbman/qman_driver.c new file mode 100644 index 0000000000..80dde2028b --- /dev/null +++ b/drivers/bus/dpaa/base/qbman/qman_driver.c @@ -0,0 +1,271 @@ +/*- + * 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 +#include +#include "qman_priv.h" +#include +#include + +/* Global variable containing revision id (even on non-control plane systems + * where CCSR isn't available). + */ +u16 qman_ip_rev; +u16 qm_channel_pool1 = QMAN_CHANNEL_POOL1; +u16 qm_channel_caam = QMAN_CHANNEL_CAAM; +u16 qm_channel_pme = QMAN_CHANNEL_PME; + +/* Ccsr map address to access ccsrbased register */ +void *qman_ccsr_map; +/* The qman clock frequency */ +u32 qman_clk; + +static __thread int fd = -1; +static __thread struct qm_portal_config pcfg; +static __thread struct dpaa_ioctl_portal_map map = { + .type = dpaa_portal_qman +}; + +static int fsl_qman_portal_init(uint32_t index, int is_shared) +{ + cpu_set_t cpuset; + int loop, ret; + struct dpaa_ioctl_irq_map irq_map; + + /* Verify the thread's cpu-affinity */ + ret = pthread_getaffinity_np(pthread_self(), sizeof(cpu_set_t), + &cpuset); + if (ret) { + error(0, ret, "pthread_getaffinity_np()"); + return ret; + } + pcfg.cpu = -1; + for (loop = 0; loop < CPU_SETSIZE; loop++) + if (CPU_ISSET(loop, &cpuset)) { + if (pcfg.cpu != -1) { + pr_err("Thread is not affine to 1 cpu\n"); + return -EINVAL; + } + pcfg.cpu = loop; + } + if (pcfg.cpu == -1) { + pr_err("Bug in getaffinity handling!\n"); + return -EINVAL; + } + + /* Allocate and map a qman portal */ + map.index = index; + ret = process_portal_map(&map); + if (ret) { + error(0, ret, "process_portal_map()"); + return ret; + } + pcfg.channel = map.channel; + pcfg.pools = map.pools; + pcfg.index = map.index; + + /* Make the portal's cache-[enabled|inhibited] regions */ + pcfg.addr_virt[DPAA_PORTAL_CE] = map.addr.cena; + pcfg.addr_virt[DPAA_PORTAL_CI] = map.addr.cinh; + + fd = open(QMAN_PORTAL_IRQ_PATH, O_RDONLY); + if (fd == -1) { + pr_err("QMan irq init failed\n"); + process_portal_unmap(&map.addr); + return -EBUSY; + } + + pcfg.is_shared = is_shared; + pcfg.node = NULL; + pcfg.irq = fd; + + irq_map.type = dpaa_portal_qman; + irq_map.portal_cinh = map.addr.cinh; + process_portal_irq_map(fd, &irq_map); + return 0; +} + +static int fsl_qman_portal_finish(void) +{ + int ret; + + process_portal_irq_unmap(fd); + + ret = process_portal_unmap(&map.addr); + if (ret) + error(0, ret, "process_portal_unmap()"); + return ret; +} + +int qman_thread_init(void) +{ + /* Convert from contiguous/virtual cpu numbering to real cpu when + * calling into the code that is dependent on the device naming. + */ + return fsl_qman_portal_init(QBMAN_ANY_PORTAL_IDX, 0); +} + +int qman_thread_finish(void) +{ + return fsl_qman_portal_finish(); +} + +void qman_thread_irq(void) +{ + qbman_invoke_irq(pcfg.irq); + + /* Now we need to uninhibit interrupts. This is the only code outside + * the regular portal driver that manipulates any portal register, so + * rather than breaking that encapsulation I am simply hard-coding the + * offset to the inhibit register here. + */ + out_be32(pcfg.addr_virt[DPAA_PORTAL_CI] + 0xe0c, 0); +} + +int qman_global_init(void) +{ + const struct device_node *dt_node; + int ret = 0; + size_t lenp; + const u32 *chanid; + static int ccsr_map_fd; + const uint32_t *qman_addr; + uint64_t phys_addr; + uint64_t regs_size; + const u32 *clk; + + static int done; + + if (done) + return -EBUSY; + + /* Use the device-tree to determine IP revision until something better + * is devised. + */ + dt_node = of_find_compatible_node(NULL, NULL, "fsl,qman-portal"); + if (!dt_node) { + pr_err("No qman portals available for any CPU\n"); + return -ENODEV; + } + if (of_device_is_compatible(dt_node, "fsl,qman-portal-1.0") || + of_device_is_compatible(dt_node, "fsl,qman-portal-1.0.0")) + pr_err("QMan rev1.0 on P4080 rev1 is not supported!\n"); + else if (of_device_is_compatible(dt_node, "fsl,qman-portal-1.1") || + of_device_is_compatible(dt_node, "fsl,qman-portal-1.1.0")) + qman_ip_rev = QMAN_REV11; + else if (of_device_is_compatible(dt_node, "fsl,qman-portal-1.2") || + of_device_is_compatible(dt_node, "fsl,qman-portal-1.2.0")) + qman_ip_rev = QMAN_REV12; + else if (of_device_is_compatible(dt_node, "fsl,qman-portal-2.0") || + of_device_is_compatible(dt_node, "fsl,qman-portal-2.0.0")) + qman_ip_rev = QMAN_REV20; + else if (of_device_is_compatible(dt_node, "fsl,qman-portal-3.0.0") || + of_device_is_compatible(dt_node, "fsl,qman-portal-3.0.1")) + qman_ip_rev = QMAN_REV30; + else if (of_device_is_compatible(dt_node, "fsl,qman-portal-3.1.0") || + of_device_is_compatible(dt_node, "fsl,qman-portal-3.1.1") || + of_device_is_compatible(dt_node, "fsl,qman-portal-3.1.2") || + of_device_is_compatible(dt_node, "fsl,qman-portal-3.1.3")) + qman_ip_rev = QMAN_REV31; + else if (of_device_is_compatible(dt_node, "fsl,qman-portal-3.2.0") || + of_device_is_compatible(dt_node, "fsl,qman-portal-3.2.1")) + qman_ip_rev = QMAN_REV32; + else + qman_ip_rev = QMAN_REV11; + + if (!qman_ip_rev) { + pr_err("Unknown qman portal version\n"); + return -ENODEV; + } + if ((qman_ip_rev & 0xFF00) >= QMAN_REV30) { + qm_channel_pool1 = QMAN_CHANNEL_POOL1_REV3; + qm_channel_caam = QMAN_CHANNEL_CAAM_REV3; + qm_channel_pme = QMAN_CHANNEL_PME_REV3; + } + + dt_node = of_find_compatible_node(NULL, NULL, "fsl,pool-channel-range"); + if (!dt_node) { + pr_err("No qman pool channel range available\n"); + return -ENODEV; + } + chanid = of_get_property(dt_node, "fsl,pool-channel-range", &lenp); + if (!chanid) { + pr_err("Can not get pool-channel-range property\n"); + return -EINVAL; + } + + /* get ccsr base */ + dt_node = of_find_compatible_node(NULL, NULL, "fsl,qman"); + if (!dt_node) { + pr_err("No qman device node available\n"); + return -ENODEV; + } + qman_addr = of_get_address(dt_node, 0, ®s_size, NULL); + if (!qman_addr) { + pr_err("of_get_address cannot return qman address\n"); + return -EINVAL; + } + phys_addr = of_translate_address(dt_node, qman_addr); + if (!phys_addr) { + pr_err("of_translate_address failed\n"); + return -EINVAL; + } + + ccsr_map_fd = open("/dev/mem", O_RDWR); + if (unlikely(ccsr_map_fd < 0)) { + pr_err("Can not open /dev/mem for qman ccsr map\n"); + return ccsr_map_fd; + } + + qman_ccsr_map = mmap(NULL, regs_size, PROT_READ | PROT_WRITE, + MAP_SHARED, ccsr_map_fd, phys_addr); + if (qman_ccsr_map == MAP_FAILED) { + pr_err("Can not map qman ccsr base\n"); + return -EINVAL; + } + + clk = of_get_property(dt_node, "clock-frequency", NULL); + if (!clk) + pr_warn("Can't find Qman clock frequency\n"); + else + qman_clk = be32_to_cpu(*clk); + + return ret; +} diff --git a/drivers/bus/dpaa/base/qbman/qman_priv.h b/drivers/bus/dpaa/base/qbman/qman_priv.h new file mode 100644 index 0000000000..4a11e409b1 --- /dev/null +++ b/drivers/bus/dpaa/base/qbman/qman_priv.h @@ -0,0 +1,303 @@ +/*- + * 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. + */ + +#ifndef __QMAN_PRIV_H +#define __QMAN_PRIV_H + +#include "dpaa_sys.h" +#include + +/* Congestion Groups */ +/* + * This wrapper represents a bit-array for the state of the 256 QMan congestion + * groups. Is also used as a *mask* for congestion groups, eg. so we ignore + * those that don't concern us. We harness the structure and accessor details + * already used in the management command to query congestion groups. + */ +struct qman_cgrs { + struct __qm_mcr_querycongestion q; +}; + +static inline void qman_cgrs_init(struct qman_cgrs *c) +{ + memset(c, 0, sizeof(*c)); +} + +static inline void qman_cgrs_fill(struct qman_cgrs *c) +{ + memset(c, 0xff, sizeof(*c)); +} + +static inline int qman_cgrs_get(struct qman_cgrs *c, int num) +{ + return QM_MCR_QUERYCONGESTION(&c->q, num); +} + +static inline void qman_cgrs_set(struct qman_cgrs *c, int num) +{ + c->q.state[__CGR_WORD(num)] |= (0x80000000 >> __CGR_SHIFT(num)); +} + +static inline void qman_cgrs_unset(struct qman_cgrs *c, int num) +{ + c->q.state[__CGR_WORD(num)] &= ~(0x80000000 >> __CGR_SHIFT(num)); +} + +static inline int qman_cgrs_next(struct qman_cgrs *c, int num) +{ + while ((++num < (int)__CGR_NUM) && !qman_cgrs_get(c, num)) + ; + return num; +} + +static inline void qman_cgrs_cp(struct qman_cgrs *dest, + const struct qman_cgrs *src) +{ + memcpy(dest, src, sizeof(*dest)); +} + +static inline void qman_cgrs_and(struct qman_cgrs *dest, + const struct qman_cgrs *a, + const struct qman_cgrs *b) +{ + int ret; + u32 *_d = dest->q.state; + const u32 *_a = a->q.state; + const u32 *_b = b->q.state; + + for (ret = 0; ret < 8; ret++) + *(_d++) = *(_a++) & *(_b++); +} + +static inline void qman_cgrs_xor(struct qman_cgrs *dest, + const struct qman_cgrs *a, + const struct qman_cgrs *b) +{ + int ret; + u32 *_d = dest->q.state; + const u32 *_a = a->q.state; + const u32 *_b = b->q.state; + + for (ret = 0; ret < 8; ret++) + *(_d++) = *(_a++) ^ *(_b++); +} + +/* used by CCSR and portal interrupt code */ +enum qm_isr_reg { + qm_isr_status = 0, + qm_isr_enable = 1, + qm_isr_disable = 2, + qm_isr_inhibit = 3 +}; + +struct qm_portal_config { + /* + * Corenet portal addresses; + * [0]==cache-enabled, [1]==cache-inhibited. + */ + void __iomem *addr_virt[2]; + struct device_node *node; + /* Allow these to be joined in lists */ + struct list_head list; + /* User-visible portal configuration settings */ + /* If the caller enables DQRR stashing (and thus wishes to operate the + * portal from only one cpu), this is the logical CPU that the portal + * will stash to. Whether stashing is enabled or not, this setting is + * also used for any "core-affine" portals, ie. default portals + * associated to the corresponding cpu. -1 implies that there is no + * core affinity configured. + */ + int cpu; + /* portal interrupt line */ + int irq; + /* the unique index of this portal */ + u32 index; + /* Is this portal shared? (If so, it has coarser locking and demuxes + * processing on behalf of other CPUs.). + */ + int is_shared; + /* The portal's dedicated channel id, use this value for initialising + * frame queues to target this portal when scheduled. + */ + u16 channel; + /* A mask of which pool channels this portal has dequeue access to + * (using QM_SDQCR_CHANNELS_POOL(n) for the bitmask). + */ + u32 pools; + +}; + +/* Revision info (for errata and feature handling) */ +#define QMAN_REV11 0x0101 +#define QMAN_REV12 0x0102 +#define QMAN_REV20 0x0200 +#define QMAN_REV30 0x0300 +#define QMAN_REV31 0x0301 +#define QMAN_REV32 0x0302 +extern u16 qman_ip_rev; /* 0 if uninitialised, otherwise QMAN_REVx */ +extern u32 qman_clk; + +int qm_set_wpm(int wpm); +int qm_get_wpm(int *wpm); + +struct qman_portal *qman_create_affine_portal( + const struct qm_portal_config *config, + const struct qman_cgrs *cgrs); +const struct qm_portal_config *qman_destroy_affine_portal(void); + +struct qm_portal_config *qm_get_unused_portal(void); +struct qm_portal_config *qm_get_unused_portal_idx(uint32_t idx); + +void qm_put_unused_portal(struct qm_portal_config *pcfg); +void qm_set_liodns(struct qm_portal_config *pcfg); + +/* This CGR feature is supported by h/w and required by unit-tests and the + * debugfs hooks, so is implemented in the driver. However it allows an explicit + * corruption of h/w fields by s/w that are usually incorruptible (because the + * counters are usually maintained entirely within h/w). As such, we declare + * this API internally. + */ +int qman_testwrite_cgr(struct qman_cgr *cgr, u64 i_bcnt, + struct qm_mcr_cgrtestwrite *result); + +/* QMan s/w corenet portal, low-level i/face */ + +/* + * For Choose one SOURCE. Choose one COUNT. Choose one + * dequeue TYPE. Choose TOKEN (8-bit). + * If SOURCE == CHANNELS, + * Choose CHANNELS_DEDICATED and/or CHANNELS_POOL(n). + * You can choose DEDICATED_PRECEDENCE if the portal channel should have + * priority. + * If SOURCE == SPECIFICWQ, + * Either select the work-queue ID with SPECIFICWQ_WQ(), or select the + * channel (SPECIFICWQ_DEDICATED or SPECIFICWQ_POOL()) and specify the + * work-queue priority (0-7) with SPECIFICWQ_WQ() - either way, you get the + * same value. + */ +#define QM_SDQCR_SOURCE_CHANNELS 0x0 +#define QM_SDQCR_SOURCE_SPECIFICWQ 0x40000000 +#define QM_SDQCR_COUNT_EXACT1 0x0 +#define QM_SDQCR_COUNT_UPTO3 0x20000000 +#define QM_SDQCR_DEDICATED_PRECEDENCE 0x10000000 +#define QM_SDQCR_TYPE_MASK 0x03000000 +#define QM_SDQCR_TYPE_NULL 0x0 +#define QM_SDQCR_TYPE_PRIO_QOS 0x01000000 +#define QM_SDQCR_TYPE_ACTIVE_QOS 0x02000000 +#define QM_SDQCR_TYPE_ACTIVE 0x03000000 +#define QM_SDQCR_TOKEN_MASK 0x00ff0000 +#define QM_SDQCR_TOKEN_SET(v) (((v) & 0xff) << 16) +#define QM_SDQCR_TOKEN_GET(v) (((v) >> 16) & 0xff) +#define QM_SDQCR_CHANNELS_DEDICATED 0x00008000 +#define QM_SDQCR_SPECIFICWQ_MASK 0x000000f7 +#define QM_SDQCR_SPECIFICWQ_DEDICATED 0x00000000 +#define QM_SDQCR_SPECIFICWQ_POOL(n) ((n) << 4) +#define QM_SDQCR_SPECIFICWQ_WQ(n) (n) + +#define QM_VDQCR_FQID_MASK 0x00ffffff +#define QM_VDQCR_FQID(n) ((n) & QM_VDQCR_FQID_MASK) + +#define QM_EQCR_VERB_VBIT 0x80 +#define QM_EQCR_VERB_CMD_MASK 0x61 /* but only one value; */ +#define QM_EQCR_VERB_CMD_ENQUEUE 0x01 +#define QM_EQCR_VERB_COLOUR_MASK 0x18 /* 4 possible values; */ +#define QM_EQCR_VERB_COLOUR_GREEN 0x00 +#define QM_EQCR_VERB_COLOUR_YELLOW 0x08 +#define QM_EQCR_VERB_COLOUR_RED 0x10 +#define QM_EQCR_VERB_COLOUR_OVERRIDE 0x18 +#define QM_EQCR_VERB_INTERRUPT 0x04 /* on command consumption */ +#define QM_EQCR_VERB_ORP 0x02 /* enable order restoration */ +#define QM_EQCR_DCA_ENABLE 0x80 +#define QM_EQCR_DCA_PARK 0x40 +#define QM_EQCR_DCA_IDXMASK 0x0f /* "DQRR::idx" goes here */ +#define QM_EQCR_SEQNUM_NESN 0x8000 /* Advance NESN */ +#define QM_EQCR_SEQNUM_NLIS 0x4000 /* More fragments to come */ +#define QM_EQCR_SEQNUM_SEQMASK 0x3fff /* sequence number goes here */ +#define QM_EQCR_FQID_NULL 0 /* eg. for an ORP seqnum hole */ + +#define QM_MCC_VERB_VBIT 0x80 +#define QM_MCC_VERB_MASK 0x7f /* where the verb contains; */ +#define QM_MCC_VERB_INITFQ_PARKED 0x40 +#define QM_MCC_VERB_INITFQ_SCHED 0x41 +#define QM_MCC_VERB_QUERYFQ 0x44 +#define QM_MCC_VERB_QUERYFQ_NP 0x45 /* "non-programmable" fields */ +#define QM_MCC_VERB_QUERYWQ 0x46 +#define QM_MCC_VERB_QUERYWQ_DEDICATED 0x47 +#define QM_MCC_VERB_ALTER_SCHED 0x48 /* Schedule FQ */ +#define QM_MCC_VERB_ALTER_FE 0x49 /* Force Eligible FQ */ +#define QM_MCC_VERB_ALTER_RETIRE 0x4a /* Retire FQ */ +#define QM_MCC_VERB_ALTER_OOS 0x4b /* Take FQ out of service */ +#define QM_MCC_VERB_ALTER_FQXON 0x4d /* FQ XON */ +#define QM_MCC_VERB_ALTER_FQXOFF 0x4e /* FQ XOFF */ +#define QM_MCC_VERB_INITCGR 0x50 +#define QM_MCC_VERB_MODIFYCGR 0x51 +#define QM_MCC_VERB_CGRTESTWRITE 0x52 +#define QM_MCC_VERB_QUERYCGR 0x58 +#define QM_MCC_VERB_QUERYCONGESTION 0x59 + +/* + * Used by all portal interrupt registers except 'inhibit' + * Channels with frame availability + */ +#define QM_PIRQ_DQAVAIL 0x0000ffff + +/* The DQAVAIL interrupt fields break down into these bits; */ +#define QM_DQAVAIL_PORTAL 0x8000 /* Portal channel */ +#define QM_DQAVAIL_POOL(n) (0x8000 >> (n)) /* Pool channel, n==[1..15] */ +#define QM_DQAVAIL_MASK 0xffff +/* This mask contains all the "irqsource" bits visible to API users */ +#define QM_PIRQ_VISIBLE (QM_PIRQ_SLOW | QM_PIRQ_DQRI) + +/* These are qm__(). So for example, qm_disable_write() means "write + * the disable register" rather than "disable the ability to write". + */ +#define qm_isr_status_read(qm) __qm_isr_read(qm, qm_isr_status) +#define qm_isr_status_clear(qm, m) __qm_isr_write(qm, qm_isr_status, m) +#define qm_isr_enable_read(qm) __qm_isr_read(qm, qm_isr_enable) +#define qm_isr_enable_write(qm, v) __qm_isr_write(qm, qm_isr_enable, v) +#define qm_isr_disable_read(qm) __qm_isr_read(qm, qm_isr_disable) +#define qm_isr_disable_write(qm, v) __qm_isr_write(qm, qm_isr_disable, v) +/* TODO: unfortunate name-clash here, reword? */ +#define qm_isr_inhibit(qm) __qm_isr_write(qm, qm_isr_inhibit, 1) +#define qm_isr_uninhibit(qm) __qm_isr_write(qm, qm_isr_inhibit, 0) + +#define QMAN_PORTAL_IRQ_PATH "/dev/fsl-usdpaa-irq" + +#endif /* _QMAN_PRIV_H */ diff --git a/drivers/bus/dpaa/include/fsl_qman.h b/drivers/bus/dpaa/include/fsl_qman.h new file mode 100644 index 0000000000..784fe609f9 --- /dev/null +++ b/drivers/bus/dpaa/include/fsl_qman.h @@ -0,0 +1,1254 @@ +/*- + * 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 2008-2012 Freescale Semiconductor, Inc. + * + * 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. + */ + +#ifndef __FSL_QMAN_H +#define __FSL_QMAN_H + +#ifdef __cplusplus +extern "C" { +#endif + +#include + +/* Last updated for v00.800 of the BG */ + +/* Hardware constants */ +#define QM_CHANNEL_SWPORTAL0 0 +#define QMAN_CHANNEL_POOL1 0x21 +#define QMAN_CHANNEL_CAAM 0x80 +#define QMAN_CHANNEL_PME 0xa0 +#define QMAN_CHANNEL_POOL1_REV3 0x401 +#define QMAN_CHANNEL_CAAM_REV3 0x840 +#define QMAN_CHANNEL_PME_REV3 0x860 +extern u16 qm_channel_pool1; +extern u16 qm_channel_caam; +extern u16 qm_channel_pme; +enum qm_dc_portal { + qm_dc_portal_fman0 = 0, + qm_dc_portal_fman1 = 1, + qm_dc_portal_caam = 2, + qm_dc_portal_pme = 3 +}; + +/* Portal processing (interrupt) sources */ +#define QM_PIRQ_CCSCI 0x00200000 /* CEETM Congestion State Change */ +#define QM_PIRQ_CSCI 0x00100000 /* Congestion State Change */ +#define QM_PIRQ_EQCI 0x00080000 /* Enqueue Command Committed */ +#define QM_PIRQ_EQRI 0x00040000 /* EQCR Ring (below threshold) */ +#define QM_PIRQ_DQRI 0x00020000 /* DQRR Ring (non-empty) */ +#define QM_PIRQ_MRI 0x00010000 /* MR Ring (non-empty) */ +/* + * This mask contains all the interrupt sources that need handling except DQRI, + * ie. that if present should trigger slow-path processing. + */ +#define QM_PIRQ_SLOW (QM_PIRQ_CSCI | QM_PIRQ_EQCI | QM_PIRQ_EQRI | \ + QM_PIRQ_MRI | QM_PIRQ_CCSCI) + +/* For qman_static_dequeue_*** APIs */ +#define QM_SDQCR_CHANNELS_POOL_MASK 0x00007fff +/* for n in [1,15] */ +#define QM_SDQCR_CHANNELS_POOL(n) (0x00008000 >> (n)) +/* for conversion from n of qm_channel */ +static inline u32 QM_SDQCR_CHANNELS_POOL_CONV(u16 channel) +{ + return QM_SDQCR_CHANNELS_POOL(channel + 1 - qm_channel_pool1); +} + +/* For qman_volatile_dequeue(); Choose one PRECEDENCE. EXACT is optional. Use + * NUMFRAMES(n) (6-bit) or NUMFRAMES_TILLEMPTY to fill in the frame-count. Use + * FQID(n) to fill in the frame queue ID. + */ +#define QM_VDQCR_PRECEDENCE_VDQCR 0x0 +#define QM_VDQCR_PRECEDENCE_SDQCR 0x80000000 +#define QM_VDQCR_EXACT 0x40000000 +#define QM_VDQCR_NUMFRAMES_MASK 0x3f000000 +#define QM_VDQCR_NUMFRAMES_SET(n) (((n) & 0x3f) << 24) +#define QM_VDQCR_NUMFRAMES_GET(n) (((n) >> 24) & 0x3f) +#define QM_VDQCR_NUMFRAMES_TILLEMPTY QM_VDQCR_NUMFRAMES_SET(0) + +/* --- QMan data structures (and associated constants) --- */ + +/* Represents s/w corenet portal mapped data structures */ +struct qm_eqcr_entry; /* EQCR (EnQueue Command Ring) entries */ +struct qm_dqrr_entry; /* DQRR (DeQueue Response Ring) entries */ +struct qm_mr_entry; /* MR (Message Ring) entries */ +struct qm_mc_command; /* MC (Management Command) command */ +struct qm_mc_result; /* MC result */ + +#define QM_FD_FORMAT_SG 0x4 +#define QM_FD_FORMAT_LONG 0x2 +#define QM_FD_FORMAT_COMPOUND 0x1 +enum qm_fd_format { + /* + * 'contig' implies a contiguous buffer, whereas 'sg' implies a + * scatter-gather table. 'big' implies a 29-bit length with no offset + * field, otherwise length is 20-bit and offset is 9-bit. 'compound' + * implies a s/g-like table, where each entry itself represents a frame + * (contiguous or scatter-gather) and the 29-bit "length" is + * interpreted purely for congestion calculations, ie. a "congestion + * weight". + */ + qm_fd_contig = 0, + qm_fd_contig_big = QM_FD_FORMAT_LONG, + qm_fd_sg = QM_FD_FORMAT_SG, + qm_fd_sg_big = QM_FD_FORMAT_SG | QM_FD_FORMAT_LONG, + qm_fd_compound = QM_FD_FORMAT_COMPOUND +}; + +/* Capitalised versions are un-typed but can be used in static expressions */ +#define QM_FD_CONTIG 0 +#define QM_FD_CONTIG_BIG QM_FD_FORMAT_LONG +#define QM_FD_SG QM_FD_FORMAT_SG +#define QM_FD_SG_BIG (QM_FD_FORMAT_SG | QM_FD_FORMAT_LONG) +#define QM_FD_COMPOUND QM_FD_FORMAT_COMPOUND + +/* "Frame Descriptor (FD)" */ +struct qm_fd { + union { + struct { +#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ + u8 dd:2; /* dynamic debug */ + u8 liodn_offset:6; + u8 bpid:8; /* Buffer Pool ID */ + u8 eliodn_offset:4; + u8 __reserved:4; + u8 addr_hi; /* high 8-bits of 40-bit address */ + u32 addr_lo; /* low 32-bits of 40-bit address */ +#else + u8 liodn_offset:6; + u8 dd:2; /* dynamic debug */ + u8 bpid:8; /* Buffer Pool ID */ + u8 __reserved:4; + u8 eliodn_offset:4; + u8 addr_hi; /* high 8-bits of 40-bit address */ + u32 addr_lo; /* low 32-bits of 40-bit address */ +#endif + }; + struct { + u64 __notaddress:24; + /* More efficient address accessor */ + u64 addr:40; + }; + u64 opaque_addr; + }; + /* The 'format' field indicates the interpretation of the remaining 29 + * bits of the 32-bit word. For packing reasons, it is duplicated in the + * other union elements. Note, union'd structs are difficult to use with + * static initialisation under gcc, in which case use the "opaque" form + * with one of the macros. + */ + union { + /* For easier/faster copying of this part of the fd (eg. from a + * DQRR entry to an EQCR entry) copy 'opaque' + */ + u32 opaque; + /* If 'format' is _contig or _sg, 20b length and 9b offset */ + struct { +#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ + enum qm_fd_format format:3; + u16 offset:9; + u32 length20:20; +#else + u32 length20:20; + u16 offset:9; + enum qm_fd_format format:3; +#endif + }; + /* If 'format' is _contig_big or _sg_big, 29b length */ + struct { +#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ + enum qm_fd_format _format1:3; + u32 length29:29; +#else + u32 length29:29; + enum qm_fd_format _format1:3; +#endif + }; + /* If 'format' is _compound, 29b "congestion weight" */ + struct { +#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ + enum qm_fd_format _format2:3; + u32 cong_weight:29; +#else + u32 cong_weight:29; + enum qm_fd_format _format2:3; +#endif + }; + }; + union { + u32 cmd; + u32 status; + }; +} __attribute__((aligned(8))); +#define QM_FD_DD_NULL 0x00 +#define QM_FD_PID_MASK 0x3f +static inline u64 qm_fd_addr_get64(const struct qm_fd *fd) +{ + return fd->addr; +} + +static inline dma_addr_t qm_fd_addr(const struct qm_fd *fd) +{ + return (dma_addr_t)fd->addr; +} + +/* Macro, so we compile better if 'v' isn't always 64-bit */ +#define qm_fd_addr_set64(fd, v) \ + do { \ + struct qm_fd *__fd931 = (fd); \ + __fd931->addr = v; \ + } while (0) + +/* Scatter/Gather table entry */ +struct qm_sg_entry { + union { + struct { +#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ + u8 __reserved1[3]; + u8 addr_hi; /* high 8-bits of 40-bit address */ + u32 addr_lo; /* low 32-bits of 40-bit address */ +#else + u32 addr_lo; /* low 32-bits of 40-bit address */ + u8 addr_hi; /* high 8-bits of 40-bit address */ + u8 __reserved1[3]; +#endif + }; + struct { +#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ + u64 __notaddress:24; + u64 addr:40; +#else + u64 addr:40; + u64 __notaddress:24; +#endif + }; + u64 opaque; + }; + union { + struct { +#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ + u32 extension:1; /* Extension bit */ + u32 final:1; /* Final bit */ + u32 length:30; +#else + u32 length:30; + u32 final:1; /* Final bit */ + u32 extension:1; /* Extension bit */ +#endif + }; + u32 val; + }; + u8 __reserved2; + u8 bpid; + union { + struct { +#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ + u16 __reserved3:3; + u16 offset:13; +#else + u16 offset:13; + u16 __reserved3:3; +#endif + }; + u16 val_off; + }; +} __packed; +static inline u64 qm_sg_entry_get64(const struct qm_sg_entry *sg) +{ + return sg->addr; +} + +static inline dma_addr_t qm_sg_addr(const struct qm_sg_entry *sg) +{ + return (dma_addr_t)sg->addr; +} + +/* Macro, so we compile better if 'v' isn't always 64-bit */ +#define qm_sg_entry_set64(sg, v) \ + do { \ + struct qm_sg_entry *__sg931 = (sg); \ + __sg931->addr = v; \ + } while (0) + +/* See 1.5.8.1: "Enqueue Command" */ +struct qm_eqcr_entry { + u8 __dont_write_directly__verb; + u8 dca; + u16 seqnum; + u32 orp; /* 24-bit */ + u32 fqid; /* 24-bit */ + u32 tag; + struct qm_fd fd; + u8 __reserved3[32]; +} __packed; + + +/* "Frame Dequeue Response" */ +struct qm_dqrr_entry { + u8 verb; + u8 stat; + u16 seqnum; /* 15-bit */ + u8 tok; + u8 __reserved2[3]; + u32 fqid; /* 24-bit */ + u32 contextB; + struct qm_fd fd; + u8 __reserved4[32]; +}; + +#define QM_DQRR_VERB_VBIT 0x80 +#define QM_DQRR_VERB_MASK 0x7f /* where the verb contains; */ +#define QM_DQRR_VERB_FRAME_DEQUEUE 0x60 /* "this format" */ +#define QM_DQRR_STAT_FQ_EMPTY 0x80 /* FQ empty */ +#define QM_DQRR_STAT_FQ_HELDACTIVE 0x40 /* FQ held active */ +#define QM_DQRR_STAT_FQ_FORCEELIGIBLE 0x20 /* FQ was force-eligible'd */ +#define QM_DQRR_STAT_FD_VALID 0x10 /* has a non-NULL FD */ +#define QM_DQRR_STAT_UNSCHEDULED 0x02 /* Unscheduled dequeue */ +#define QM_DQRR_STAT_DQCR_EXPIRED 0x01 /* VDQCR or PDQCR expired*/ + + +/* "ERN Message Response" */ +/* "FQ State Change Notification" */ +struct qm_mr_entry { + u8 verb; + union { + struct { + u8 dca; + u16 seqnum; + u8 rc; /* Rejection Code */ + u32 orp:24; + u32 fqid; /* 24-bit */ + u32 tag; + struct qm_fd fd; + } __packed ern; + struct { +#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ + u8 colour:2; /* See QM_MR_DCERN_COLOUR_* */ + u8 __reserved1:4; + enum qm_dc_portal portal:2; +#else + enum qm_dc_portal portal:3; + u8 __reserved1:3; + u8 colour:2; /* See QM_MR_DCERN_COLOUR_* */ +#endif + u16 __reserved2; + u8 rc; /* Rejection Code */ + u32 __reserved3:24; + u32 fqid; /* 24-bit */ + u32 tag; + struct qm_fd fd; + } __packed dcern; + struct { + u8 fqs; /* Frame Queue Status */ + u8 __reserved1[6]; + u32 fqid; /* 24-bit */ + u32 contextB; + u8 __reserved2[16]; + } __packed fq; /* FQRN/FQRNI/FQRL/FQPN */ + }; + u8 __reserved2[32]; +} __packed; +#define QM_MR_VERB_VBIT 0x80 +/* + * ERNs originating from direct-connect portals ("dcern") use 0x20 as a verb + * which would be invalid as a s/w enqueue verb. A s/w ERN can be distinguished + * from the other MR types by noting if the 0x20 bit is unset. + */ +#define QM_MR_VERB_TYPE_MASK 0x27 +#define QM_MR_VERB_DC_ERN 0x20 +#define QM_MR_VERB_FQRN 0x21 +#define QM_MR_VERB_FQRNI 0x22 +#define QM_MR_VERB_FQRL 0x23 +#define QM_MR_VERB_FQPN 0x24 +#define QM_MR_RC_MASK 0xf0 /* contains one of; */ +#define QM_MR_RC_CGR_TAILDROP 0x00 +#define QM_MR_RC_WRED 0x10 +#define QM_MR_RC_ERROR 0x20 +#define QM_MR_RC_ORPWINDOW_EARLY 0x30 +#define QM_MR_RC_ORPWINDOW_LATE 0x40 +#define QM_MR_RC_FQ_TAILDROP 0x50 +#define QM_MR_RC_ORPWINDOW_RETIRED 0x60 +#define QM_MR_RC_ORP_ZERO 0x70 +#define QM_MR_FQS_ORLPRESENT 0x02 /* ORL fragments to come */ +#define QM_MR_FQS_NOTEMPTY 0x01 /* FQ has enqueued frames */ +#define QM_MR_DCERN_COLOUR_GREEN 0x00 +#define QM_MR_DCERN_COLOUR_YELLOW 0x01 +#define QM_MR_DCERN_COLOUR_RED 0x02 +#define QM_MR_DCERN_COLOUR_OVERRIDE 0x03 +/* + * An identical structure of FQD fields is present in the "Init FQ" command and + * the "Query FQ" result, it's suctioned out into the "struct qm_fqd" type. + * Within that, the 'stashing' and 'taildrop' pieces are also factored out, the + * latter has two inlines to assist with converting to/from the mant+exp + * representation. + */ +struct qm_fqd_stashing { + /* See QM_STASHING_EXCL_<...> */ +#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ + u8 exclusive; + u8 __reserved1:2; + /* Numbers of cachelines */ + u8 annotation_cl:2; + u8 data_cl:2; + u8 context_cl:2; +#else + u8 context_cl:2; + u8 data_cl:2; + u8 annotation_cl:2; + u8 __reserved1:2; + u8 exclusive; +#endif +} __packed; +struct qm_fqd_taildrop { +#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ + u16 __reserved1:3; + u16 mant:8; + u16 exp:5; +#else + u16 exp:5; + u16 mant:8; + u16 __reserved1:3; +#endif +} __packed; +struct qm_fqd_oac { + /* "Overhead Accounting Control", see QM_OAC_<...> */ +#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ + u8 oac:2; /* "Overhead Accounting Control" */ + u8 __reserved1:6; +#else + u8 __reserved1:6; + u8 oac:2; /* "Overhead Accounting Control" */ +#endif + /* Two's-complement value (-128 to +127) */ + signed char oal; /* "Overhead Accounting Length" */ +} __packed; +struct qm_fqd { + union { + u8 orpc; + struct { +#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ + u8 __reserved1:2; + u8 orprws:3; + u8 oa:1; + u8 olws:2; +#else + u8 olws:2; + u8 oa:1; + u8 orprws:3; + u8 __reserved1:2; +#endif + } __packed; + }; + u8 cgid; + u16 fq_ctrl; /* See QM_FQCTRL_<...> */ + union { + u16 dest_wq; + struct { +#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ + u16 channel:13; /* qm_channel */ + u16 wq:3; +#else + u16 wq:3; + u16 channel:13; /* qm_channel */ +#endif + } __packed dest; + }; +#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ + u16 __reserved2:1; + u16 ics_cred:15; +#else + u16 __reserved2:1; + u16 ics_cred:15; +#endif + /* + * For "Initialize Frame Queue" commands, the write-enable mask + * determines whether 'td' or 'oac_init' is observed. For query + * commands, this field is always 'td', and 'oac_query' (below) reflects + * the Overhead ACcounting values. + */ + union { + uint16_t opaque_td; + struct qm_fqd_taildrop td; + struct qm_fqd_oac oac_init; + }; + u32 context_b; + union { + /* Treat it as 64-bit opaque */ + u64 opaque; + struct { +#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ + u32 hi; + u32 lo; +#else + u32 lo; + u32 hi; +#endif + }; + /* Treat it as s/w portal stashing config */ + /* see "FQD Context_A field used for [...]" */ + struct { +#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ + struct qm_fqd_stashing stashing; + /* + * 48-bit address of FQ context to + * stash, must be cacheline-aligned + */ + u16 context_hi; + u32 context_lo; +#else + u32 context_lo; + u16 context_hi; + struct qm_fqd_stashing stashing; +#endif + } __packed; + } context_a; + struct qm_fqd_oac oac_query; +} __packed; +/* 64-bit converters for context_hi/lo */ +static inline u64 qm_fqd_stashing_get64(const struct qm_fqd *fqd) +{ + return ((u64)fqd->context_a.context_hi << 32) | + (u64)fqd->context_a.context_lo; +} + +static inline dma_addr_t qm_fqd_stashing_addr(const struct qm_fqd *fqd) +{ + return (dma_addr_t)qm_fqd_stashing_get64(fqd); +} + +static inline u64 qm_fqd_context_a_get64(const struct qm_fqd *fqd) +{ + return ((u64)fqd->context_a.hi << 32) | + (u64)fqd->context_a.lo; +} + +static inline void qm_fqd_stashing_set64(struct qm_fqd *fqd, u64 addr) +{ + fqd->context_a.context_hi = upper_32_bits(addr); + fqd->context_a.context_lo = lower_32_bits(addr); +} + +static inline void qm_fqd_context_a_set64(struct qm_fqd *fqd, u64 addr) +{ + fqd->context_a.hi = upper_32_bits(addr); + fqd->context_a.lo = lower_32_bits(addr); +} + +/* convert a threshold value into mant+exp representation */ +static inline int qm_fqd_taildrop_set(struct qm_fqd_taildrop *td, u32 val, + int roundup) +{ + u32 e = 0; + int oddbit = 0; + + if (val > 0xe0000000) + return -ERANGE; + while (val > 0xff) { + oddbit = val & 1; + val >>= 1; + e++; + if (roundup && oddbit) + val++; + } + td->exp = e; + td->mant = val; + return 0; +} + +/* and the other direction */ +static inline u32 qm_fqd_taildrop_get(const struct qm_fqd_taildrop *td) +{ + return (u32)td->mant << td->exp; +} + + +/* See "Frame Queue Descriptor (FQD)" */ +/* Frame Queue Descriptor (FQD) field 'fq_ctrl' uses these constants */ +#define QM_FQCTRL_MASK 0x07ff /* 'fq_ctrl' flags; */ +#define QM_FQCTRL_CGE 0x0400 /* Congestion Group Enable */ +#define QM_FQCTRL_TDE 0x0200 /* Tail-Drop Enable */ +#define QM_FQCTRL_ORP 0x0100 /* ORP Enable */ +#define QM_FQCTRL_CTXASTASHING 0x0080 /* Context-A stashing */ +#define QM_FQCTRL_CPCSTASH 0x0040 /* CPC Stash Enable */ +#define QM_FQCTRL_FORCESFDR 0x0008 /* High-priority SFDRs */ +#define QM_FQCTRL_AVOIDBLOCK 0x0004 /* Don't block active */ +#define QM_FQCTRL_HOLDACTIVE 0x0002 /* Hold active in portal */ +#define QM_FQCTRL_PREFERINCACHE 0x0001 /* Aggressively cache FQD */ +#define QM_FQCTRL_LOCKINCACHE QM_FQCTRL_PREFERINCACHE /* older naming */ + +/* See "FQD Context_A field used for [...] */ +/* Frame Queue Descriptor (FQD) field 'CONTEXT_A' uses these constants */ +#define QM_STASHING_EXCL_ANNOTATION 0x04 +#define QM_STASHING_EXCL_DATA 0x02 +#define QM_STASHING_EXCL_CTX 0x01 + +/* See "Intra Class Scheduling" */ +/* FQD field 'OAC' (Overhead ACcounting) uses these constants */ +#define QM_OAC_ICS 0x2 /* Accounting for Intra-Class Scheduling */ +#define QM_OAC_CG 0x1 /* Accounting for Congestion Groups */ + +/* + * This struct represents the 32-bit "WR_PARM_[GYR]" parameters in CGR fields + * and associated commands/responses. The WRED parameters are calculated from + * these fields as follows; + * MaxTH = MA * (2 ^ Mn) + * Slope = SA / (2 ^ Sn) + * MaxP = 4 * (Pn + 1) + */ +struct qm_cgr_wr_parm { + union { + u32 word; + struct { +#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ + u32 MA:8; + u32 Mn:5; + u32 SA:7; /* must be between 64-127 */ + u32 Sn:6; + u32 Pn:6; +#else + u32 Pn:6; + u32 Sn:6; + u32 SA:7; /* must be between 64-127 */ + u32 Mn:5; + u32 MA:8; +#endif + } __packed; + }; +} __packed; +/* + * This struct represents the 13-bit "CS_THRES" CGR field. In the corresponding + * management commands, this is padded to a 16-bit structure field, so that's + * how we represent it here. The congestion state threshold is calculated from + * these fields as follows; + * CS threshold = TA * (2 ^ Tn) + */ +struct qm_cgr_cs_thres { + union { + u16 hword; + struct { +#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ + u16 __reserved:3; + u16 TA:8; + u16 Tn:5; +#else + u16 Tn:5; + u16 TA:8; + u16 __reserved:3; +#endif + } __packed; + }; +} __packed; +/* + * This identical structure of CGR fields is present in the "Init/Modify CGR" + * commands and the "Query CGR" result. It's suctioned out here into its own + * struct. + */ +struct __qm_mc_cgr { + struct qm_cgr_wr_parm wr_parm_g; + struct qm_cgr_wr_parm wr_parm_y; + struct qm_cgr_wr_parm wr_parm_r; + u8 wr_en_g; /* boolean, use QM_CGR_EN */ + u8 wr_en_y; /* boolean, use QM_CGR_EN */ + u8 wr_en_r; /* boolean, use QM_CGR_EN */ + u8 cscn_en; /* boolean, use QM_CGR_EN */ + union { + struct { +#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ + u16 cscn_targ_upd_ctrl; /* use QM_CSCN_TARG_UDP_ */ + u16 cscn_targ_dcp_low; /* CSCN_TARG_DCP low-16bits */ +#else + u16 cscn_targ_dcp_low; /* CSCN_TARG_DCP low-16bits */ + u16 cscn_targ_upd_ctrl; /* use QM_CSCN_TARG_UDP_ */ +#endif + }; + u32 cscn_targ; /* use QM_CGR_TARG_* */ + }; + u8 cstd_en; /* boolean, use QM_CGR_EN */ + u8 cs; /* boolean, only used in query response */ + union { + struct qm_cgr_cs_thres cs_thres; + /* use qm_cgr_cs_thres_set64() */ + u16 __cs_thres; + }; + u8 mode; /* QMAN_CGR_MODE_FRAME not supported in rev1.0 */ +} __packed; +#define QM_CGR_EN 0x01 /* For wr_en_*, cscn_en, cstd_en */ +#define QM_CGR_TARG_UDP_CTRL_WRITE_BIT 0x8000 /* value written to portal bit*/ +#define QM_CGR_TARG_UDP_CTRL_DCP 0x4000 /* 0: SWP, 1: DCP */ +#define QM_CGR_TARG_PORTAL(n) (0x80000000 >> (n)) /* s/w portal, 0-9 */ +#define QM_CGR_TARG_FMAN0 0x00200000 /* direct-connect portal: fman0 */ +#define QM_CGR_TARG_FMAN1 0x00100000 /* : fman1 */ +/* Convert CGR thresholds to/from "cs_thres" format */ +static inline u64 qm_cgr_cs_thres_get64(const struct qm_cgr_cs_thres *th) +{ + return (u64)th->TA << th->Tn; +} + +static inline int qm_cgr_cs_thres_set64(struct qm_cgr_cs_thres *th, u64 val, + int roundup) +{ + u32 e = 0; + int oddbit = 0; + + while (val > 0xff) { + oddbit = val & 1; + val >>= 1; + e++; + if (roundup && oddbit) + val++; + } + th->Tn = e; + th->TA = val; + return 0; +} + +/* See 1.5.8.5.1: "Initialize FQ" */ +/* See 1.5.8.5.2: "Query FQ" */ +/* See 1.5.8.5.3: "Query FQ Non-Programmable Fields" */ +/* See 1.5.8.5.4: "Alter FQ State Commands " */ +/* See 1.5.8.6.1: "Initialize/Modify CGR" */ +/* See 1.5.8.6.2: "CGR Test Write" */ +/* See 1.5.8.6.3: "Query CGR" */ +/* See 1.5.8.6.4: "Query Congestion Group State" */ +struct qm_mcc_initfq { + u8 __reserved1; + u16 we_mask; /* Write Enable Mask */ + u32 fqid; /* 24-bit */ + u16 count; /* Initialises 'count+1' FQDs */ + struct qm_fqd fqd; /* the FQD fields go here */ + u8 __reserved3[30]; +} __packed; +struct qm_mcc_queryfq { + u8 __reserved1[3]; + u32 fqid; /* 24-bit */ + u8 __reserved2[56]; +} __packed; +struct qm_mcc_queryfq_np { + u8 __reserved1[3]; + u32 fqid; /* 24-bit */ + u8 __reserved2[56]; +} __packed; +struct qm_mcc_alterfq { + u8 __reserved1[3]; + u32 fqid; /* 24-bit */ + u8 __reserved2; + u8 count; /* number of consecutive FQID */ + u8 __reserved3[10]; + u32 context_b; /* frame queue context b */ + u8 __reserved4[40]; +} __packed; +struct qm_mcc_initcgr { + u8 __reserved1; + u16 we_mask; /* Write Enable Mask */ + struct __qm_mc_cgr cgr; /* CGR fields */ + u8 __reserved2[2]; + u8 cgid; + u8 __reserved4[32]; +} __packed; +struct qm_mcc_cgrtestwrite { + u8 __reserved1[2]; + u8 i_bcnt_hi:8;/* high 8-bits of 40-bit "Instant" */ + u32 i_bcnt_lo; /* low 32-bits of 40-bit */ + u8 __reserved2[23]; + u8 cgid; + u8 __reserved3[32]; +} __packed; +struct qm_mcc_querycgr { + u8 __reserved1[30]; + u8 cgid; + u8 __reserved2[32]; +} __packed; +struct qm_mcc_querycongestion { + u8 __reserved[63]; +} __packed; +struct qm_mcc_querywq { + u8 __reserved; + /* select channel if verb != QUERYWQ_DEDICATED */ + union { + u16 channel_wq; /* ignores wq (3 lsbits) */ + struct { +#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ + u16 id:13; /* qm_channel */ + u16 __reserved1:3; +#else + u16 __reserved1:3; + u16 id:13; /* qm_channel */ +#endif + } __packed channel; + }; + u8 __reserved2[60]; +} __packed; + +struct qm_mc_command { + u8 __dont_write_directly__verb; + union { + struct qm_mcc_initfq initfq; + struct qm_mcc_queryfq queryfq; + struct qm_mcc_queryfq_np queryfq_np; + struct qm_mcc_alterfq alterfq; + struct qm_mcc_initcgr initcgr; + struct qm_mcc_cgrtestwrite cgrtestwrite; + struct qm_mcc_querycgr querycgr; + struct qm_mcc_querycongestion querycongestion; + struct qm_mcc_querywq querywq; + }; +} __packed; + +/* INITFQ-specific flags */ +#define QM_INITFQ_WE_MASK 0x01ff /* 'Write Enable' flags; */ +#define QM_INITFQ_WE_OAC 0x0100 +#define QM_INITFQ_WE_ORPC 0x0080 +#define QM_INITFQ_WE_CGID 0x0040 +#define QM_INITFQ_WE_FQCTRL 0x0020 +#define QM_INITFQ_WE_DESTWQ 0x0010 +#define QM_INITFQ_WE_ICSCRED 0x0008 +#define QM_INITFQ_WE_TDTHRESH 0x0004 +#define QM_INITFQ_WE_CONTEXTB 0x0002 +#define QM_INITFQ_WE_CONTEXTA 0x0001 +/* INITCGR/MODIFYCGR-specific flags */ +#define QM_CGR_WE_MASK 0x07ff /* 'Write Enable Mask'; */ +#define QM_CGR_WE_WR_PARM_G 0x0400 +#define QM_CGR_WE_WR_PARM_Y 0x0200 +#define QM_CGR_WE_WR_PARM_R 0x0100 +#define QM_CGR_WE_WR_EN_G 0x0080 +#define QM_CGR_WE_WR_EN_Y 0x0040 +#define QM_CGR_WE_WR_EN_R 0x0020 +#define QM_CGR_WE_CSCN_EN 0x0010 +#define QM_CGR_WE_CSCN_TARG 0x0008 +#define QM_CGR_WE_CSTD_EN 0x0004 +#define QM_CGR_WE_CS_THRES 0x0002 +#define QM_CGR_WE_MODE 0x0001 + +struct qm_mcr_initfq { + u8 __reserved1[62]; +} __packed; +struct qm_mcr_queryfq { + u8 __reserved1[8]; + struct qm_fqd fqd; /* the FQD fields are here */ + u8 __reserved2[30]; +} __packed; +struct qm_mcr_queryfq_np { + u8 __reserved1; + u8 state; /* QM_MCR_NP_STATE_*** */ +#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ + u8 __reserved2; + u32 fqd_link:24; + u16 __reserved3:2; + u16 odp_seq:14; + u16 __reserved4:2; + u16 orp_nesn:14; + u16 __reserved5:1; + u16 orp_ea_hseq:15; + u16 __reserved6:1; + u16 orp_ea_tseq:15; + u8 __reserved7; + u32 orp_ea_hptr:24; + u8 __reserved8; + u32 orp_ea_tptr:24; + u8 __reserved9; + u32 pfdr_hptr:24; + u8 __reserved10; + u32 pfdr_tptr:24; + u8 __reserved11[5]; + u8 __reserved12:7; + u8 is:1; + u16 ics_surp; + u32 byte_cnt; + u8 __reserved13; + u32 frm_cnt:24; + u32 __reserved14; + u16 ra1_sfdr; /* QM_MCR_NP_RA1_*** */ + u16 ra2_sfdr; /* QM_MCR_NP_RA2_*** */ + u16 __reserved15; + u16 od1_sfdr; /* QM_MCR_NP_OD1_*** */ + u16 od2_sfdr; /* QM_MCR_NP_OD2_*** */ + u16 od3_sfdr; /* QM_MCR_NP_OD3_*** */ +#else + u8 __reserved2; + u32 fqd_link:24; + + u16 odp_seq:14; + u16 __reserved3:2; + + u16 orp_nesn:14; + u16 __reserved4:2; + + u16 orp_ea_hseq:15; + u16 __reserved5:1; + + u16 orp_ea_tseq:15; + u16 __reserved6:1; + + u8 __reserved7; + u32 orp_ea_hptr:24; + + u8 __reserved8; + u32 orp_ea_tptr:24; + + u8 __reserved9; + u32 pfdr_hptr:24; + + u8 __reserved10; + u32 pfdr_tptr:24; + + u8 __reserved11[5]; + u8 is:1; + u8 __reserved12:7; + u16 ics_surp; + u32 byte_cnt; + u8 __reserved13; + u32 frm_cnt:24; + u32 __reserved14; + u16 ra1_sfdr; /* QM_MCR_NP_RA1_*** */ + u16 ra2_sfdr; /* QM_MCR_NP_RA2_*** */ + u16 __reserved15; + u16 od1_sfdr; /* QM_MCR_NP_OD1_*** */ + u16 od2_sfdr; /* QM_MCR_NP_OD2_*** */ + u16 od3_sfdr; /* QM_MCR_NP_OD3_*** */ +#endif +} __packed; + +struct qm_mcr_alterfq { + u8 fqs; /* Frame Queue Status */ + u8 __reserved1[61]; +} __packed; +struct qm_mcr_initcgr { + u8 __reserved1[62]; +} __packed; +struct qm_mcr_cgrtestwrite { + u16 __reserved1; + struct __qm_mc_cgr cgr; /* CGR fields */ + u8 __reserved2[3]; + u32 __reserved3:24; + u32 i_bcnt_hi:8;/* high 8-bits of 40-bit "Instant" */ + u32 i_bcnt_lo; /* low 32-bits of 40-bit */ + u32 __reserved4:24; + u32 a_bcnt_hi:8;/* high 8-bits of 40-bit "Average" */ + u32 a_bcnt_lo; /* low 32-bits of 40-bit */ + u16 lgt; /* Last Group Tick */ + u16 wr_prob_g; + u16 wr_prob_y; + u16 wr_prob_r; + u8 __reserved5[8]; +} __packed; +struct qm_mcr_querycgr { + u16 __reserved1; + struct __qm_mc_cgr cgr; /* CGR fields */ + u8 __reserved2[3]; + union { + struct { +#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ + u32 __reserved3:24; + u32 i_bcnt_hi:8;/* high 8-bits of 40-bit "Instant" */ + u32 i_bcnt_lo; /* low 32-bits of 40-bit */ +#else + u32 i_bcnt_lo; /* low 32-bits of 40-bit */ + u32 i_bcnt_hi:8;/* high 8-bits of 40-bit "Instant" */ + u32 __reserved3:24; +#endif + }; + u64 i_bcnt; + }; + union { + struct { +#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ + u32 __reserved4:24; + u32 a_bcnt_hi:8;/* high 8-bits of 40-bit "Average" */ + u32 a_bcnt_lo; /* low 32-bits of 40-bit */ +#else + u32 a_bcnt_lo; /* low 32-bits of 40-bit */ + u32 a_bcnt_hi:8;/* high 8-bits of 40-bit "Average" */ + u32 __reserved4:24; +#endif + }; + u64 a_bcnt; + }; + union { + u32 cscn_targ_swp[4]; + u8 __reserved5[16]; + }; +} __packed; + +struct __qm_mcr_querycongestion { + u32 state[8]; +}; + +struct qm_mcr_querycongestion { + u8 __reserved[30]; + /* Access this struct using QM_MCR_QUERYCONGESTION() */ + struct __qm_mcr_querycongestion state; +} __packed; +struct qm_mcr_querywq { + union { + u16 channel_wq; /* ignores wq (3 lsbits) */ + struct { +#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ + u16 id:13; /* qm_channel */ + u16 __reserved:3; +#else + u16 __reserved:3; + u16 id:13; /* qm_channel */ +#endif + } __packed channel; + }; + u8 __reserved[28]; + u32 wq_len[8]; +} __packed; + +struct qm_mc_result { + u8 verb; + u8 result; + union { + struct qm_mcr_initfq initfq; + struct qm_mcr_queryfq queryfq; + struct qm_mcr_queryfq_np queryfq_np; + struct qm_mcr_alterfq alterfq; + struct qm_mcr_initcgr initcgr; + struct qm_mcr_cgrtestwrite cgrtestwrite; + struct qm_mcr_querycgr querycgr; + struct qm_mcr_querycongestion querycongestion; + struct qm_mcr_querywq querywq; + }; +} __packed; + +#define QM_MCR_VERB_RRID 0x80 +#define QM_MCR_VERB_MASK QM_MCC_VERB_MASK +#define QM_MCR_VERB_INITFQ_PARKED QM_MCC_VERB_INITFQ_PARKED +#define QM_MCR_VERB_INITFQ_SCHED QM_MCC_VERB_INITFQ_SCHED +#define QM_MCR_VERB_QUERYFQ QM_MCC_VERB_QUERYFQ +#define QM_MCR_VERB_QUERYFQ_NP QM_MCC_VERB_QUERYFQ_NP +#define QM_MCR_VERB_QUERYWQ QM_MCC_VERB_QUERYWQ +#define QM_MCR_VERB_QUERYWQ_DEDICATED QM_MCC_VERB_QUERYWQ_DEDICATED +#define QM_MCR_VERB_ALTER_SCHED QM_MCC_VERB_ALTER_SCHED +#define QM_MCR_VERB_ALTER_FE QM_MCC_VERB_ALTER_FE +#define QM_MCR_VERB_ALTER_RETIRE QM_MCC_VERB_ALTER_RETIRE +#define QM_MCR_VERB_ALTER_OOS QM_MCC_VERB_ALTER_OOS +#define QM_MCR_RESULT_NULL 0x00 +#define QM_MCR_RESULT_OK 0xf0 +#define QM_MCR_RESULT_ERR_FQID 0xf1 +#define QM_MCR_RESULT_ERR_FQSTATE 0xf2 +#define QM_MCR_RESULT_ERR_NOTEMPTY 0xf3 /* OOS fails if FQ is !empty */ +#define QM_MCR_RESULT_ERR_BADCHANNEL 0xf4 +#define QM_MCR_RESULT_PENDING 0xf8 +#define QM_MCR_RESULT_ERR_BADCOMMAND 0xff +#define QM_MCR_NP_STATE_FE 0x10 +#define QM_MCR_NP_STATE_R 0x08 +#define QM_MCR_NP_STATE_MASK 0x07 /* Reads FQD::STATE; */ +#define QM_MCR_NP_STATE_OOS 0x00 +#define QM_MCR_NP_STATE_RETIRED 0x01 +#define QM_MCR_NP_STATE_TEN_SCHED 0x02 +#define QM_MCR_NP_STATE_TRU_SCHED 0x03 +#define QM_MCR_NP_STATE_PARKED 0x04 +#define QM_MCR_NP_STATE_ACTIVE 0x05 +#define QM_MCR_NP_PTR_MASK 0x07ff /* for RA[12] & OD[123] */ +#define QM_MCR_NP_RA1_NRA(v) (((v) >> 14) & 0x3) /* FQD::NRA */ +#define QM_MCR_NP_RA2_IT(v) (((v) >> 14) & 0x1) /* FQD::IT */ +#define QM_MCR_NP_OD1_NOD(v) (((v) >> 14) & 0x3) /* FQD::NOD */ +#define QM_MCR_NP_OD3_NPC(v) (((v) >> 14) & 0x3) /* FQD::NPC */ +#define QM_MCR_FQS_ORLPRESENT 0x02 /* ORL fragments to come */ +#define QM_MCR_FQS_NOTEMPTY 0x01 /* FQ has enqueued frames */ +/* This extracts the state for congestion group 'n' from a query response. + * Eg. + * u8 cgr = [...]; + * struct qm_mc_result *res = [...]; + * printf("congestion group %d congestion state: %d\n", cgr, + * QM_MCR_QUERYCONGESTION(&res->querycongestion.state, cgr)); + */ +#define __CGR_WORD(num) (num >> 5) +#define __CGR_SHIFT(num) (num & 0x1f) +#define __CGR_NUM (sizeof(struct __qm_mcr_querycongestion) << 3) +static inline int QM_MCR_QUERYCONGESTION(struct __qm_mcr_querycongestion *p, + u8 cgr) +{ + return p->state[__CGR_WORD(cgr)] & (0x80000000 >> __CGR_SHIFT(cgr)); +} + + /* Portal and Frame Queues */ +/* Represents a managed portal */ +struct qman_portal; + +/* + * This object type represents QMan frame queue descriptors (FQD), it is + * cacheline-aligned, and initialised by qman_create_fq(). The structure is + * defined further down. + */ +struct qman_fq; + +/* + * This object type represents a QMan congestion group, it is defined further + * down. + */ +struct qman_cgr; + +/* + * This enum, and the callback type that returns it, are used when handling + * dequeued frames via DQRR. Note that for "null" callbacks registered with the + * portal object (for handling dequeues that do not demux because context_b is + * NULL), the return value *MUST* be qman_cb_dqrr_consume. + */ +enum qman_cb_dqrr_result { + /* DQRR entry can be consumed */ + qman_cb_dqrr_consume, + /* Like _consume, but requests parking - FQ must be held-active */ + qman_cb_dqrr_park, + /* Does not consume, for DCA mode only. This allows out-of-order + * consumes by explicit calls to qman_dca() and/or the use of implicit + * DCA via EQCR entries. + */ + qman_cb_dqrr_defer, + /* + * Stop processing without consuming this ring entry. Exits the current + * qman_p_poll_dqrr() or interrupt-handling, as appropriate. If within + * an interrupt handler, the callback would typically call + * qman_irqsource_remove(QM_PIRQ_DQRI) before returning this value, + * otherwise the interrupt will reassert immediately. + */ + qman_cb_dqrr_stop, + /* Like qman_cb_dqrr_stop, but consumes the current entry. */ + qman_cb_dqrr_consume_stop +}; + +typedef enum qman_cb_dqrr_result (*qman_cb_dqrr)(struct qman_portal *qm, + struct qman_fq *fq, + const struct qm_dqrr_entry *dqrr); + +/* + * This callback type is used when handling ERNs, FQRNs and FQRLs via MR. They + * are always consumed after the callback returns. + */ +typedef void (*qman_cb_mr)(struct qman_portal *qm, struct qman_fq *fq, + const struct qm_mr_entry *msg); + +/* This callback type is used when handling DCP ERNs */ +typedef void (*qman_cb_dc_ern)(struct qman_portal *qm, + const struct qm_mr_entry *msg); +/* + * s/w-visible states. Ie. tentatively scheduled + truly scheduled + active + + * held-active + held-suspended are just "sched". Things like "retired" will not + * be assumed until it is complete (ie. QMAN_FQ_STATE_CHANGING is set until + * then, to indicate it's completing and to gate attempts to retry the retire + * command). Note, park commands do not set QMAN_FQ_STATE_CHANGING because it's + * technically impossible in the case of enqueue DCAs (which refer to DQRR ring + * index rather than the FQ that ring entry corresponds to), so repeated park + * commands are allowed (if you're silly enough to try) but won't change FQ + * state, and the resulting park notifications move FQs from "sched" to + * "parked". + */ +enum qman_fq_state { + qman_fq_state_oos, + qman_fq_state_parked, + qman_fq_state_sched, + qman_fq_state_retired +}; + + +/* + * Frame queue objects (struct qman_fq) are stored within memory passed to + * qman_create_fq(), as this allows stashing of caller-provided demux callback + * pointers at no extra cost to stashing of (driver-internal) FQ state. If the + * caller wishes to add per-FQ state and have it benefit from dequeue-stashing, + * they should; + * + * (a) extend the qman_fq structure with their state; eg. + * + * // myfq is allocated and driver_fq callbacks filled in; + * struct my_fq { + * struct qman_fq base; + * int an_extra_field; + * [ ... add other fields to be associated with each FQ ...] + * } *myfq = some_my_fq_allocator(); + * struct qman_fq *fq = qman_create_fq(fqid, flags, &myfq->base); + * + * // in a dequeue callback, access extra fields from 'fq' via a cast; + * struct my_fq *myfq = (struct my_fq *)fq; + * do_something_with(myfq->an_extra_field); + * [...] + * + * (b) when and if configuring the FQ for context stashing, specify how ever + * many cachelines are required to stash 'struct my_fq', to accelerate not + * only the QMan driver but the callback as well. + */ + +struct qman_fq_cb { + qman_cb_dqrr dqrr; /* for dequeued frames */ + qman_cb_mr ern; /* for s/w ERNs */ + qman_cb_mr fqs; /* frame-queue state changes*/ +}; + +struct qman_fq { + /* Caller of qman_create_fq() provides these demux callbacks */ + struct qman_fq_cb cb; + /* + * These are internal to the driver, don't touch. In particular, they + * may change, be removed, or extended (so you shouldn't rely on + * sizeof(qman_fq) being a constant). + */ + spinlock_t fqlock; + u32 fqid; + /* DPDK Interface */ + void *dpaa_intf; + + volatile unsigned long flags; + enum qman_fq_state state; + int cgr_groupid; + struct rb_node node; +}; + +/* + * This callback type is used when handling congestion group entry/exit. + * 'congested' is non-zero on congestion-entry, and zero on congestion-exit. + */ +typedef void (*qman_cb_cgr)(struct qman_portal *qm, + struct qman_cgr *cgr, int congested); + +struct qman_cgr { + /* Set these prior to qman_create_cgr() */ + u32 cgrid; /* 0..255, but u32 to allow specials like -1, 256, etc.*/ + qman_cb_cgr cb; + /* These are private to the driver */ + u16 chan; /* portal channel this object is created on */ + struct list_head node; +}; + + +#ifdef __cplusplus +} +#endif + +#endif /* __FSL_QMAN_H */ diff --git a/drivers/bus/dpaa/include/fsl_usd.h b/drivers/bus/dpaa/include/fsl_usd.h index 4ff48c6f4d..b0d953fd8a 100644 --- a/drivers/bus/dpaa/include/fsl_usd.h +++ b/drivers/bus/dpaa/include/fsl_usd.h @@ -47,6 +47,10 @@ extern "C" { #endif +/* Thread-entry/exit hooks; */ +int qman_thread_init(void); +int qman_thread_finish(void); + #define QBMAN_ANY_PORTAL_IDX 0xffffffff /* Obtain and free raw (unitialized) portals */ @@ -81,6 +85,15 @@ int qman_free_raw_portal(struct dpaa_raw_portal *portal); int bman_allocate_raw_portal(struct dpaa_raw_portal *portal); int bman_free_raw_portal(struct dpaa_raw_portal *portal); +/* Post-process interrupts. NB, the kernel IRQ handler disables the interrupt + * line before notifying us, and this post-processing re-enables it once + * processing is complete. As such, it is essential to call this before going + * into another blocking read/select/poll. + */ +void qman_thread_irq(void); + +/* Global setup */ +int qman_global_init(void); #ifdef __cplusplus } #endif -- 2.20.1