drivers/soc/fsl/qbman/qman_priv.h

   1 /* Copyright 2008 - 2016 Freescale Semiconductor, Inc.
   2  *
   3  * Redistribution and use in source and binary forms, with or without
   4  * modification, are permitted provided that the following conditions are met:
   5  *     * Redistributions of source code must retain the above copyright
   6  *       notice, this list of conditions and the following disclaimer.
   7  *     * Redistributions in binary form must reproduce the above copyright
   8  *       notice, this list of conditions and the following disclaimer in the
   9  *       documentation and/or other materials provided with the distribution.
  10  *     * Neither the name of Freescale Semiconductor nor the
  11  *       names of its contributors may be used to endorse or promote products
  12  *       derived from this software without specific prior written permission.
  13  *
  14  * ALTERNATIVELY, this software may be distributed under the terms of the
  15  * GNU General Public License ("GPL") as published by the Free Software
  16  * Foundation, either version 2 of that License or (at your option) any
  17  * later version.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
  20  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  21  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  22  * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
  23  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  24  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  25  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  26  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  28  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29  */
  30
  31 #include "dpaa_sys.h"
  32
  33 #include <soc/fsl/qman.h>
  34 #include <linux/dma-mapping.h>
  35 #include <linux/iommu.h>
  36
  37 #if defined(CONFIG_FSL_PAMU)
  38 #include <asm/fsl_pamu_stash.h>
  39 #endif
  40
  41 struct qm_mcr_querywq {
  42         u8 verb;
  43         u8 result;
  44         u16 channel_wq; /* ignores wq (3 lsbits): _res[0-2] */
  45         u8 __reserved[28];
  46         u32 wq_len[8];
  47 } __packed;
  48
  49 static inline u16 qm_mcr_querywq_get_chan(const struct qm_mcr_querywq *wq)
  50 {
  51         return wq->channel_wq >> 3;
  52 }
  53
  54 struct __qm_mcr_querycongestion {
  55         u32 state[8];
  56 };
  57
  58 /* "Query Congestion Group State" */
  59 struct qm_mcr_querycongestion {
  60         u8 verb;
  61         u8 result;
  62         u8 __reserved[30];
  63         /* Access this struct using qman_cgrs_get() */
  64         struct __qm_mcr_querycongestion state;
  65 } __packed;
  66
  67 /* "Query CGR" */
  68 struct qm_mcr_querycgr {
  69         u8 verb;
  70         u8 result;
  71         u16 __reserved1;
  72         struct __qm_mc_cgr cgr; /* CGR fields */
  73         u8 __reserved2[6];
  74         u8 i_bcnt_hi;   /* high 8-bits of 40-bit "Instant" */
  75         __be32 i_bcnt_lo;       /* low 32-bits of 40-bit */
  76         u8 __reserved3[3];
  77         u8 a_bcnt_hi;   /* high 8-bits of 40-bit "Average" */
  78         __be32 a_bcnt_lo;       /* low 32-bits of 40-bit */
  79         __be32 cscn_targ_swp[4];
  80 } __packed;
  81
  82 static inline u64 qm_mcr_querycgr_i_get64(const struct qm_mcr_querycgr *q)
  83 {
  84         return ((u64)q->i_bcnt_hi << 32) | be32_to_cpu(q->i_bcnt_lo);
  85 }
  86 static inline u64 qm_mcr_querycgr_a_get64(const struct qm_mcr_querycgr *q)
  87 {
  88         return ((u64)q->a_bcnt_hi << 32) | be32_to_cpu(q->a_bcnt_lo);
  89 }
  90
  91 /* Congestion Groups */
  92
  93 /*
  94  * This wrapper represents a bit-array for the state of the 256 QMan congestion
  95  * groups. Is also used as a *mask* for congestion groups, eg. so we ignore
  96  * those that don't concern us. We harness the structure and accessor details
  97  * already used in the management command to query congestion groups.
  98  */
  99 #define CGR_BITS_PER_WORD 5
 100 #define CGR_WORD(x)     ((x) >> CGR_BITS_PER_WORD)
 101 #define CGR_BIT(x)      (BIT(31) >> ((x) & 0x1f))
 102 #define CGR_NUM (sizeof(struct __qm_mcr_querycongestion) << 3)
 103
 104 struct qman_cgrs {
 105         struct __qm_mcr_querycongestion q;
 106 };
 107
 108 static inline void qman_cgrs_init(struct qman_cgrs *c)
 109 {
 110         memset(c, 0, sizeof(*c));
 111 }
 112
 113 static inline void qman_cgrs_fill(struct qman_cgrs *c)
 114 {
 115         memset(c, 0xff, sizeof(*c));
 116 }
 117
 118 static inline int qman_cgrs_get(struct qman_cgrs *c, u8 cgr)
 119 {
 120         return c->q.state[CGR_WORD(cgr)] & CGR_BIT(cgr);
 121 }
 122
 123 static inline void qman_cgrs_cp(struct qman_cgrs *dest,
 124                                 const struct qman_cgrs *src)
 125 {
 126         *dest = *src;
 127 }
 128
 129 static inline void qman_cgrs_and(struct qman_cgrs *dest,
 130                         const struct qman_cgrs *a, const struct qman_cgrs *b)
 131 {
 132         int ret;
 133         u32 *_d = dest->q.state;
 134         const u32 *_a = a->q.state;
 135         const u32 *_b = b->q.state;
 136
 137         for (ret = 0; ret < 8; ret++)
 138                 *_d++ = *_a++ & *_b++;
 139 }
 140
 141 static inline void qman_cgrs_xor(struct qman_cgrs *dest,
 142                         const struct qman_cgrs *a, const struct qman_cgrs *b)
 143 {
 144         int ret;
 145         u32 *_d = dest->q.state;
 146         const u32 *_a = a->q.state;
 147         const u32 *_b = b->q.state;
 148
 149         for (ret = 0; ret < 8; ret++)
 150                 *_d++ = *_a++ ^ *_b++;
 151 }
 152
 153 void qman_init_cgr_all(void);
 154
 155 struct qm_portal_config {
 156         /* Portal addresses */
 157         void *addr_virt_ce;
 158         void __iomem *addr_virt_ci;
 159         struct device *dev;
 160         struct iommu_domain *iommu_domain;
 161         /* Allow these to be joined in lists */
 162         struct list_head list;
 163         /* User-visible portal configuration settings */
 164         /* portal is affined to this cpu */
 165         int cpu;
 166         /* portal interrupt line */
 167         int irq;
 168         /*
 169          * the portal's dedicated channel id, used initialising
 170          * frame queues to target this portal when scheduled
 171          */
 172         u16 channel;
 173         /*
 174          * mask of pool channels this portal has dequeue access to
 175          * (using QM_SDQCR_CHANNELS_POOL(n) for the bitmask)
 176          */
 177         u32 pools;
 178 };
 179
 180 /* Revision info (for errata and feature handling) */
 181 #define QMAN_REV11 0x0101
 182 #define QMAN_REV12 0x0102
 183 #define QMAN_REV20 0x0200
 184 #define QMAN_REV30 0x0300
 185 #define QMAN_REV31 0x0301
 186 #define QMAN_REV32 0x0302
 187 extern u16 qman_ip_rev; /* 0 if uninitialised, otherwise QMAN_REVx */
 188
 189 #define QM_FQID_RANGE_START 1 /* FQID 0 reserved for internal use */
 190 extern struct gen_pool *qm_fqalloc; /* FQID allocator */
 191 extern struct gen_pool *qm_qpalloc; /* pool-channel allocator */
 192 extern struct gen_pool *qm_cgralloc; /* CGR ID allocator */
 193 u32 qm_get_pools_sdqcr(void);
 194
 195 int qman_wq_alloc(void);
 196 #ifdef CONFIG_FSL_PAMU
 197 #define qman_liodn_fixup __qman_liodn_fixup
 198 #else
 199 static inline void qman_liodn_fixup(u16 channel)
 200 {
 201 }
 202 #endif
 203 void __qman_liodn_fixup(u16 channel);
 204 void qman_set_sdest(u16 channel, unsigned int cpu_idx);
 205
 206 struct qman_portal *qman_create_affine_portal(
 207                         const struct qm_portal_config *config,
 208                         const struct qman_cgrs *cgrs);
 209 const struct qm_portal_config *qman_destroy_affine_portal(void);
 210
 211 /*
 212  * qman_query_fq - Queries FQD fields (via h/w query command)
 213  * @fq: the frame queue object to be queried
 214  * @fqd: storage for the queried FQD fields
 215  */
 216 int qman_query_fq(struct qman_fq *fq, struct qm_fqd *fqd);
 217
 218 int qman_alloc_fq_table(u32 num_fqids);
 219
 220 /*   QMan s/w corenet portal, low-level i/face   */
 221
 222 /*
 223  * For qm_dqrr_sdqcr_set(); Choose one SOURCE. Choose one COUNT. Choose one
 224  * dequeue TYPE. Choose TOKEN (8-bit).
 225  * If SOURCE == CHANNELS,
 226  *   Choose CHANNELS_DEDICATED and/or CHANNELS_POOL(n).
 227  *   You can choose DEDICATED_PRECEDENCE if the portal channel should have
 228  *   priority.
 229  * If SOURCE == SPECIFICWQ,
 230  *     Either select the work-queue ID with SPECIFICWQ_WQ(), or select the
 231  *     channel (SPECIFICWQ_DEDICATED or SPECIFICWQ_POOL()) and specify the
 232  *     work-queue priority (0-7) with SPECIFICWQ_WQ() - either way, you get the
 233  *     same value.
 234  */
 235 #define QM_SDQCR_SOURCE_CHANNELS        0x0
 236 #define QM_SDQCR_SOURCE_SPECIFICWQ      0x40000000
 237 #define QM_SDQCR_COUNT_EXACT1           0x0
 238 #define QM_SDQCR_COUNT_UPTO3            0x20000000
 239 #define QM_SDQCR_DEDICATED_PRECEDENCE   0x10000000
 240 #define QM_SDQCR_TYPE_MASK              0x03000000
 241 #define QM_SDQCR_TYPE_NULL              0x0
 242 #define QM_SDQCR_TYPE_PRIO_QOS          0x01000000
 243 #define QM_SDQCR_TYPE_ACTIVE_QOS        0x02000000
 244 #define QM_SDQCR_TYPE_ACTIVE            0x03000000
 245 #define QM_SDQCR_TOKEN_MASK             0x00ff0000
 246 #define QM_SDQCR_TOKEN_SET(v)           (((v) & 0xff) << 16)
 247 #define QM_SDQCR_TOKEN_GET(v)           (((v) >> 16) & 0xff)
 248 #define QM_SDQCR_CHANNELS_DEDICATED     0x00008000
 249 #define QM_SDQCR_SPECIFICWQ_MASK        0x000000f7
 250 #define QM_SDQCR_SPECIFICWQ_DEDICATED   0x00000000
 251 #define QM_SDQCR_SPECIFICWQ_POOL(n)     ((n) << 4)
 252 #define QM_SDQCR_SPECIFICWQ_WQ(n)       (n)
 253
 254 /* For qm_dqrr_vdqcr_set(): use FQID(n) to fill in the frame queue ID */
 255 #define QM_VDQCR_FQID_MASK              0x00ffffff
 256 #define QM_VDQCR_FQID(n)                ((n) & QM_VDQCR_FQID_MASK)
 257
 258 /*
 259  * Used by all portal interrupt registers except 'inhibit'
 260  * Channels with frame availability
 261  */
 262 #define QM_PIRQ_DQAVAIL 0x0000ffff
 263
 264 /* The DQAVAIL interrupt fields break down into these bits; */
 265 #define QM_DQAVAIL_PORTAL       0x8000          /* Portal channel */
 266 #define QM_DQAVAIL_POOL(n)      (0x8000 >> (n)) /* Pool channel, n==[1..15] */
 267 #define QM_DQAVAIL_MASK         0xffff
 268 /* This mask contains all the "irqsource" bits visible to API users */
 269 #define QM_PIRQ_VISIBLE (QM_PIRQ_SLOW | QM_PIRQ_DQRI)
 270
 271 extern struct qman_portal *affine_portals[NR_CPUS];
 272 extern struct qman_portal *qman_dma_portal;
 273 const struct qm_portal_config *qman_get_qm_portal_config(
 274                                                 struct qman_portal *portal);
 275
 276 unsigned int qm_get_fqid_maxcnt(void);
 277
 278 int qman_shutdown_fq(u32 fqid);
 279
 280 int qman_requires_cleanup(void);
 281 void qman_done_cleanup(void);
 282 void qman_enable_irqs(void);