268 lines
8.5 KiB
C
268 lines
8.5 KiB
C
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/* Copyright 2008 - 2016 Freescale Semiconductor, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of Freescale Semiconductor nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* ALTERNATIVELY, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") as published by the Free Software
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* Foundation, either version 2 of that License or (at your option) any
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* later version.
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*
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* THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "dpaa_sys.h"
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#include <soc/fsl/qman.h>
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#include <linux/dma-mapping.h>
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#include <linux/iommu.h>
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#if defined(CONFIG_FSL_PAMU)
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#include <asm/fsl_pamu_stash.h>
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#endif
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struct qm_mcr_querywq {
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u8 verb;
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u8 result;
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u16 channel_wq; /* ignores wq (3 lsbits): _res[0-2] */
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u8 __reserved[28];
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u32 wq_len[8];
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} __packed;
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static inline u16 qm_mcr_querywq_get_chan(const struct qm_mcr_querywq *wq)
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{
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return wq->channel_wq >> 3;
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}
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struct __qm_mcr_querycongestion {
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u32 state[8];
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};
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/* "Query Congestion Group State" */
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struct qm_mcr_querycongestion {
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u8 verb;
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u8 result;
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u8 __reserved[30];
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/* Access this struct using qman_cgrs_get() */
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struct __qm_mcr_querycongestion state;
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} __packed;
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/* "Query CGR" */
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struct qm_mcr_querycgr {
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u8 verb;
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u8 result;
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u16 __reserved1;
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struct __qm_mc_cgr cgr; /* CGR fields */
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u8 __reserved2[6];
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u8 i_bcnt_hi; /* high 8-bits of 40-bit "Instant" */
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__be32 i_bcnt_lo; /* low 32-bits of 40-bit */
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u8 __reserved3[3];
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u8 a_bcnt_hi; /* high 8-bits of 40-bit "Average" */
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__be32 a_bcnt_lo; /* low 32-bits of 40-bit */
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__be32 cscn_targ_swp[4];
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} __packed;
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static inline u64 qm_mcr_querycgr_i_get64(const struct qm_mcr_querycgr *q)
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{
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return ((u64)q->i_bcnt_hi << 32) | be32_to_cpu(q->i_bcnt_lo);
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}
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static inline u64 qm_mcr_querycgr_a_get64(const struct qm_mcr_querycgr *q)
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{
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return ((u64)q->a_bcnt_hi << 32) | be32_to_cpu(q->a_bcnt_lo);
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}
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/* Congestion Groups */
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/*
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* This wrapper represents a bit-array for the state of the 256 QMan congestion
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* groups. Is also used as a *mask* for congestion groups, eg. so we ignore
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* those that don't concern us. We harness the structure and accessor details
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* already used in the management command to query congestion groups.
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*/
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#define CGR_BITS_PER_WORD 5
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#define CGR_WORD(x) ((x) >> CGR_BITS_PER_WORD)
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#define CGR_BIT(x) (BIT(31) >> ((x) & 0x1f))
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#define CGR_NUM (sizeof(struct __qm_mcr_querycongestion) << 3)
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struct qman_cgrs {
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struct __qm_mcr_querycongestion q;
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};
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static inline void qman_cgrs_init(struct qman_cgrs *c)
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{
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memset(c, 0, sizeof(*c));
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}
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static inline void qman_cgrs_fill(struct qman_cgrs *c)
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{
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memset(c, 0xff, sizeof(*c));
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}
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static inline int qman_cgrs_get(struct qman_cgrs *c, u8 cgr)
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{
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return c->q.state[CGR_WORD(cgr)] & CGR_BIT(cgr);
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}
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static inline void qman_cgrs_cp(struct qman_cgrs *dest,
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const struct qman_cgrs *src)
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{
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*dest = *src;
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}
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static inline void qman_cgrs_and(struct qman_cgrs *dest,
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const struct qman_cgrs *a, const struct qman_cgrs *b)
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{
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int ret;
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u32 *_d = dest->q.state;
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const u32 *_a = a->q.state;
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const u32 *_b = b->q.state;
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for (ret = 0; ret < 8; ret++)
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*_d++ = *_a++ & *_b++;
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}
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static inline void qman_cgrs_xor(struct qman_cgrs *dest,
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const struct qman_cgrs *a, const struct qman_cgrs *b)
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{
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int ret;
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u32 *_d = dest->q.state;
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const u32 *_a = a->q.state;
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const u32 *_b = b->q.state;
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for (ret = 0; ret < 8; ret++)
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*_d++ = *_a++ ^ *_b++;
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}
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void qman_init_cgr_all(void);
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struct qm_portal_config {
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/* Portal addresses */
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void *addr_virt_ce;
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void __iomem *addr_virt_ci;
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struct device *dev;
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struct iommu_domain *iommu_domain;
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/* Allow these to be joined in lists */
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struct list_head list;
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/* User-visible portal configuration settings */
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/* portal is affined to this cpu */
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int cpu;
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/* portal interrupt line */
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int irq;
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/*
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* the portal's dedicated channel id, used initialising
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* frame queues to target this portal when scheduled
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*/
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u16 channel;
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/*
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* mask of pool channels this portal has dequeue access to
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* (using QM_SDQCR_CHANNELS_POOL(n) for the bitmask)
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*/
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u32 pools;
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};
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/* Revision info (for errata and feature handling) */
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#define QMAN_REV11 0x0101
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#define QMAN_REV12 0x0102
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#define QMAN_REV20 0x0200
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#define QMAN_REV30 0x0300
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#define QMAN_REV31 0x0301
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#define QMAN_REV32 0x0302
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extern u16 qman_ip_rev; /* 0 if uninitialised, otherwise QMAN_REVx */
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#define QM_FQID_RANGE_START 1 /* FQID 0 reserved for internal use */
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extern struct gen_pool *qm_fqalloc; /* FQID allocator */
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extern struct gen_pool *qm_qpalloc; /* pool-channel allocator */
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extern struct gen_pool *qm_cgralloc; /* CGR ID allocator */
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u32 qm_get_pools_sdqcr(void);
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int qman_wq_alloc(void);
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void qman_liodn_fixup(u16 channel);
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void qman_set_sdest(u16 channel, unsigned int cpu_idx);
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struct qman_portal *qman_create_affine_portal(
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const struct qm_portal_config *config,
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const struct qman_cgrs *cgrs);
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const struct qm_portal_config *qman_destroy_affine_portal(void);
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/*
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* qman_query_fq - Queries FQD fields (via h/w query command)
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* @fq: the frame queue object to be queried
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* @fqd: storage for the queried FQD fields
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*/
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int qman_query_fq(struct qman_fq *fq, struct qm_fqd *fqd);
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int qman_alloc_fq_table(u32 num_fqids);
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/* QMan s/w corenet portal, low-level i/face */
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/*
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* For qm_dqrr_sdqcr_set(); Choose one SOURCE. Choose one COUNT. Choose one
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* dequeue TYPE. Choose TOKEN (8-bit).
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* If SOURCE == CHANNELS,
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* Choose CHANNELS_DEDICATED and/or CHANNELS_POOL(n).
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* You can choose DEDICATED_PRECEDENCE if the portal channel should have
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* priority.
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* If SOURCE == SPECIFICWQ,
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* Either select the work-queue ID with SPECIFICWQ_WQ(), or select the
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* channel (SPECIFICWQ_DEDICATED or SPECIFICWQ_POOL()) and specify the
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* work-queue priority (0-7) with SPECIFICWQ_WQ() - either way, you get the
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* same value.
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*/
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#define QM_SDQCR_SOURCE_CHANNELS 0x0
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#define QM_SDQCR_SOURCE_SPECIFICWQ 0x40000000
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#define QM_SDQCR_COUNT_EXACT1 0x0
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#define QM_SDQCR_COUNT_UPTO3 0x20000000
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#define QM_SDQCR_DEDICATED_PRECEDENCE 0x10000000
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#define QM_SDQCR_TYPE_MASK 0x03000000
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#define QM_SDQCR_TYPE_NULL 0x0
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#define QM_SDQCR_TYPE_PRIO_QOS 0x01000000
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#define QM_SDQCR_TYPE_ACTIVE_QOS 0x02000000
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#define QM_SDQCR_TYPE_ACTIVE 0x03000000
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#define QM_SDQCR_TOKEN_MASK 0x00ff0000
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#define QM_SDQCR_TOKEN_SET(v) (((v) & 0xff) << 16)
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#define QM_SDQCR_TOKEN_GET(v) (((v) >> 16) & 0xff)
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#define QM_SDQCR_CHANNELS_DEDICATED 0x00008000
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#define QM_SDQCR_SPECIFICWQ_MASK 0x000000f7
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#define QM_SDQCR_SPECIFICWQ_DEDICATED 0x00000000
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#define QM_SDQCR_SPECIFICWQ_POOL(n) ((n) << 4)
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#define QM_SDQCR_SPECIFICWQ_WQ(n) (n)
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/* For qm_dqrr_vdqcr_set(): use FQID(n) to fill in the frame queue ID */
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#define QM_VDQCR_FQID_MASK 0x00ffffff
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#define QM_VDQCR_FQID(n) ((n) & QM_VDQCR_FQID_MASK)
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/*
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* Used by all portal interrupt registers except 'inhibit'
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* Channels with frame availability
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*/
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#define QM_PIRQ_DQAVAIL 0x0000ffff
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/* The DQAVAIL interrupt fields break down into these bits; */
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#define QM_DQAVAIL_PORTAL 0x8000 /* Portal channel */
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#define QM_DQAVAIL_POOL(n) (0x8000 >> (n)) /* Pool channel, n==[1..15] */
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#define QM_DQAVAIL_MASK 0xffff
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/* This mask contains all the "irqsource" bits visible to API users */
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#define QM_PIRQ_VISIBLE (QM_PIRQ_SLOW | QM_PIRQ_DQRI)
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extern struct qman_portal *affine_portals[NR_CPUS];
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extern struct qman_portal *qman_dma_portal;
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const struct qm_portal_config *qman_get_qm_portal_config(
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struct qman_portal *portal);
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