drivers/net/ethernet/freescale/fman/fman.h

   1 /*
   2  * Copyright 2008-2015 Freescale Semiconductor Inc.
   3  * Copyright 2020 NXP
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions are met:
   7  *     * Redistributions of source code must retain the above copyright
   8  *       notice, this list of conditions and the following disclaimer.
   9  *     * Redistributions in binary form must reproduce the above copyright
  10  *       notice, this list of conditions and the following disclaimer in the
  11  *       documentation and/or other materials provided with the distribution.
  12  *     * Neither the name of Freescale Semiconductor nor the
  13  *       names of its contributors may be used to endorse or promote products
  14  *       derived from this software without specific prior written permission.
  15  *
  16  *
  17  * ALTERNATIVELY, this software may be distributed under the terms of the
  18  * GNU General Public License ("GPL") as published by the Free Software
  19  * Foundation, either version 2 of that License or (at your option) any
  20  * later version.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
  23  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  24  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  25  * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
  26  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  27  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  28  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  29  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  31  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #ifndef __FM_H
  35 #define __FM_H
  36
  37 #include <linux/io.h>
  38 #include <linux/interrupt.h>
  39 #include <linux/of_irq.h>
  40
  41 /* FM Frame descriptor macros  */
  42 /* Frame queue Context Override */
  43 #define FM_FD_CMD_FCO                   0x80000000
  44 #define FM_FD_CMD_RPD                   0x40000000  /* Read Prepended Data */
  45 #define FM_FD_CMD_UPD                   0x20000000  /* Update Prepended Data */
  46 #define FM_FD_CMD_DTC                   0x10000000  /* Do L4 Checksum */
  47
  48 /* TX-Port: Unsupported Format */
  49 #define FM_FD_ERR_UNSUPPORTED_FORMAT    0x04000000
  50 /* TX Port: Length Error */
  51 #define FM_FD_ERR_LENGTH                0x02000000
  52 #define FM_FD_ERR_DMA                   0x01000000  /* DMA Data error */
  53
  54 /* IPR frame (not error) */
  55 #define FM_FD_IPR                       0x00000001
  56 /* IPR non-consistent-sp */
  57 #define FM_FD_ERR_IPR_NCSP              (0x00100000 | FM_FD_IPR)
  58 /* IPR error */
  59 #define FM_FD_ERR_IPR                   (0x00200000 | FM_FD_IPR)
  60 /* IPR timeout */
  61 #define FM_FD_ERR_IPR_TO                (0x00300000 | FM_FD_IPR)
  62 /* TX Port: Length Error */
  63 #define FM_FD_ERR_IPRE                  (FM_FD_ERR_IPR & ~FM_FD_IPR)
  64
  65 /* Rx FIFO overflow, FCS error, code error, running disparity error
  66  * (SGMII and TBI modes), FIFO parity error. PHY Sequence error,
  67  * PHY error control character detected.
  68  */
  69 #define FM_FD_ERR_PHYSICAL              0x00080000
  70 /* Frame too long OR Frame size exceeds max_length_frame  */
  71 #define FM_FD_ERR_SIZE                  0x00040000
  72 /* classification discard */
  73 #define FM_FD_ERR_CLS_DISCARD           0x00020000
  74 /* Extract Out of Frame */
  75 #define FM_FD_ERR_EXTRACTION            0x00008000
  76 /* No Scheme Selected */
  77 #define FM_FD_ERR_NO_SCHEME             0x00004000
  78 /* Keysize Overflow */
  79 #define FM_FD_ERR_KEYSIZE_OVERFLOW      0x00002000
  80 /* Frame color is red */
  81 #define FM_FD_ERR_COLOR_RED             0x00000800
  82 /* Frame color is yellow */
  83 #define FM_FD_ERR_COLOR_YELLOW          0x00000400
  84 /* Parser Time out Exceed */
  85 #define FM_FD_ERR_PRS_TIMEOUT           0x00000080
  86 /* Invalid Soft Parser instruction */
  87 #define FM_FD_ERR_PRS_ILL_INSTRUCT      0x00000040
  88 /* Header error was identified during parsing */
  89 #define FM_FD_ERR_PRS_HDR_ERR           0x00000020
  90 /* Frame parsed beyind 256 first bytes */
  91 #define FM_FD_ERR_BLOCK_LIMIT_EXCEEDED  0x00000008
  92
  93 /* non Frame-Manager error */
  94 #define FM_FD_RX_STATUS_ERR_NON_FM      0x00400000
  95
  96 /* FMan driver defines */
  97 #define FMAN_BMI_FIFO_UNITS             0x100
  98 #define OFFSET_UNITS                    16
  99
 100 /* BMan defines */
 101 #define BM_MAX_NUM_OF_POOLS             64 /* Buffers pools */
 102 #define FMAN_PORT_MAX_EXT_POOLS_NUM     8  /* External BM pools per Rx port */
 103
 104 struct fman; /* FMan data */
 105
 106 /* Enum for defining port types */
 107 enum fman_port_type {
 108         FMAN_PORT_TYPE_TX = 0,  /* TX Port */
 109         FMAN_PORT_TYPE_RX,      /* RX Port */
 110 };
 111
 112 struct fman_rev_info {
 113         u8 major;                       /* Major revision */
 114         u8 minor;                       /* Minor revision */
 115 };
 116
 117 enum fman_exceptions {
 118         FMAN_EX_DMA_BUS_ERROR = 0,      /* DMA bus error. */
 119         FMAN_EX_DMA_READ_ECC,           /* Read Buffer ECC error */
 120         FMAN_EX_DMA_SYSTEM_WRITE_ECC,   /* Write Buffer ECC err on sys side */
 121         FMAN_EX_DMA_FM_WRITE_ECC,       /* Write Buffer ECC error on FM side */
 122         FMAN_EX_DMA_SINGLE_PORT_ECC,    /* Single Port ECC error on FM side */
 123         FMAN_EX_FPM_STALL_ON_TASKS,     /* Stall of tasks on FPM */
 124         FMAN_EX_FPM_SINGLE_ECC,         /* Single ECC on FPM. */
 125         FMAN_EX_FPM_DOUBLE_ECC,         /* Double ECC error on FPM ram access */
 126         FMAN_EX_QMI_SINGLE_ECC, /* Single ECC on QMI. */
 127         FMAN_EX_QMI_DOUBLE_ECC, /* Double bit ECC occurred on QMI */
 128         FMAN_EX_QMI_DEQ_FROM_UNKNOWN_PORTID,/* DeQ from unknown port id */
 129         FMAN_EX_BMI_LIST_RAM_ECC,       /* Linked List RAM ECC error */
 130         FMAN_EX_BMI_STORAGE_PROFILE_ECC,/* storage profile */
 131         FMAN_EX_BMI_STATISTICS_RAM_ECC,/* Statistics RAM ECC Err Enable */
 132         FMAN_EX_BMI_DISPATCH_RAM_ECC,   /* Dispatch RAM ECC Error Enable */
 133         FMAN_EX_IRAM_ECC,               /* Double bit ECC occurred on IRAM */
 134         FMAN_EX_MURAM_ECC               /* Double bit ECC occurred on MURAM */
 135 };
 136
 137 /* Parse results memory layout */
 138 struct fman_prs_result {
 139         u8 lpid;                /* Logical port id */
 140         u8 shimr;               /* Shim header result  */
 141         __be16 l2r;             /* Layer 2 result */
 142         __be16 l3r;             /* Layer 3 result */
 143         u8 l4r;         /* Layer 4 result */
 144         u8 cplan;               /* Classification plan id */
 145         __be16 nxthdr;          /* Next Header  */
 146         __be16 cksum;           /* Running-sum */
 147         /* Flags&fragment-offset field of the last IP-header */
 148         __be16 flags_frag_off;
 149         /* Routing type field of a IPV6 routing extension header */
 150         u8 route_type;
 151         /* Routing Extension Header Present; last bit is IP valid */
 152         u8 rhp_ip_valid;
 153         u8 shim_off[2];         /* Shim offset */
 154         u8 ip_pid_off;          /* IP PID (last IP-proto) offset */
 155         u8 eth_off;             /* ETH offset */
 156         u8 llc_snap_off;        /* LLC_SNAP offset */
 157         u8 vlan_off[2];         /* VLAN offset */
 158         u8 etype_off;           /* ETYPE offset */
 159         u8 pppoe_off;           /* PPP offset */
 160         u8 mpls_off[2];         /* MPLS offset */
 161         u8 ip_off[2];           /* IP offset */
 162         u8 gre_off;             /* GRE offset */
 163         u8 l4_off;              /* Layer 4 offset */
 164         u8 nxthdr_off;          /* Parser end point */
 165 };
 166
 167 /* A structure for defining buffer prefix area content. */
 168 struct fman_buffer_prefix_content {
 169         /* Number of bytes to be left at the beginning of the external
 170          * buffer; Note that the private-area will start from the base
 171          * of the buffer address.
 172          */
 173         u16 priv_data_size;
 174         /* true to pass the parse result to/from the FM;
 175          * User may use FM_PORT_GetBufferPrsResult() in
 176          * order to get the parser-result from a buffer.
 177          */
 178         bool pass_prs_result;
 179         /* true to pass the timeStamp to/from the FM User */
 180         bool pass_time_stamp;
 181         /* true to pass the KG hash result to/from the FM User may
 182          * use FM_PORT_GetBufferHashResult() in order to get the
 183          * parser-result from a buffer.
 184          */
 185         bool pass_hash_result;
 186         /* Add all other Internal-Context information: AD,
 187          * hash-result, key, etc.
 188          */
 189         u16 data_align;
 190 };
 191
 192 /* A structure of information about each of the external
 193  * buffer pools used by a port or storage-profile.
 194  */
 195 struct fman_ext_pool_params {
 196         u8 id;              /* External buffer pool id */
 197         u16 size;                   /* External buffer pool buffer size */
 198 };
 199
 200 /* A structure for informing the driver about the external
 201  * buffer pools allocated in the BM and used by a port or a
 202  * storage-profile.
 203  */
 204 struct fman_ext_pools {
 205         u8 num_of_pools_used; /* Number of pools use by this port */
 206         struct fman_ext_pool_params ext_buf_pool[FMAN_PORT_MAX_EXT_POOLS_NUM];
 207                                         /* Parameters for each port */
 208 };
 209
 210 /* A structure for defining BM pool depletion criteria */
 211 struct fman_buf_pool_depletion {
 212         /* select mode in which pause frames will be sent after a
 213          * number of pools (all together!) are depleted
 214          */
 215         bool pools_grp_mode_enable;
 216         /* the number of depleted pools that will invoke pause
 217          * frames transmission.
 218          */
 219         u8 num_of_pools;
 220         /* For each pool, true if it should be considered for
 221          * depletion (Note - this pool must be used by this port!).
 222          */
 223         bool pools_to_consider[BM_MAX_NUM_OF_POOLS];
 224         /* select mode in which pause frames will be sent
 225          * after a single-pool is depleted;
 226          */
 227         bool single_pool_mode_enable;
 228         /* For each pool, true if it should be considered
 229          * for depletion (Note - this pool must be used by this port!)
 230          */
 231         bool pools_to_consider_for_single_mode[BM_MAX_NUM_OF_POOLS];
 232 };
 233
 234 /* Enum for inter-module interrupts registration */
 235 enum fman_event_modules {
 236         FMAN_MOD_MAC = 0,               /* MAC event */
 237         FMAN_MOD_FMAN_CTRL,     /* FMAN Controller */
 238         FMAN_MOD_DUMMY_LAST
 239 };
 240
 241 /* Enum for interrupts types */
 242 enum fman_intr_type {
 243         FMAN_INTR_TYPE_ERR,
 244         FMAN_INTR_TYPE_NORMAL
 245 };
 246
 247 /* Enum for inter-module interrupts registration */
 248 enum fman_inter_module_event {
 249         FMAN_EV_ERR_MAC0 = 0,   /* MAC 0 error event */
 250         FMAN_EV_ERR_MAC1,               /* MAC 1 error event */
 251         FMAN_EV_ERR_MAC2,               /* MAC 2 error event */
 252         FMAN_EV_ERR_MAC3,               /* MAC 3 error event */
 253         FMAN_EV_ERR_MAC4,               /* MAC 4 error event */
 254         FMAN_EV_ERR_MAC5,               /* MAC 5 error event */
 255         FMAN_EV_ERR_MAC6,               /* MAC 6 error event */
 256         FMAN_EV_ERR_MAC7,               /* MAC 7 error event */
 257         FMAN_EV_ERR_MAC8,               /* MAC 8 error event */
 258         FMAN_EV_ERR_MAC9,               /* MAC 9 error event */
 259         FMAN_EV_MAC0,           /* MAC 0 event (Magic packet detection) */
 260         FMAN_EV_MAC1,           /* MAC 1 event (Magic packet detection) */
 261         FMAN_EV_MAC2,           /* MAC 2 (Magic packet detection) */
 262         FMAN_EV_MAC3,           /* MAC 3 (Magic packet detection) */
 263         FMAN_EV_MAC4,           /* MAC 4 (Magic packet detection) */
 264         FMAN_EV_MAC5,           /* MAC 5 (Magic packet detection) */
 265         FMAN_EV_MAC6,           /* MAC 6 (Magic packet detection) */
 266         FMAN_EV_MAC7,           /* MAC 7 (Magic packet detection) */
 267         FMAN_EV_MAC8,           /* MAC 8 event (Magic packet detection) */
 268         FMAN_EV_MAC9,           /* MAC 9 event (Magic packet detection) */
 269         FMAN_EV_FMAN_CTRL_0,    /* Fman controller event 0 */
 270         FMAN_EV_FMAN_CTRL_1,    /* Fman controller event 1 */
 271         FMAN_EV_FMAN_CTRL_2,    /* Fman controller event 2 */
 272         FMAN_EV_FMAN_CTRL_3,    /* Fman controller event 3 */
 273         FMAN_EV_CNT
 274 };
 275
 276 struct fman_intr_src {
 277         void (*isr_cb)(void *src_arg);
 278         void *src_handle;
 279 };
 280
 281 /** fman_exceptions_cb
 282  * fman         - Pointer to FMan
 283  * exception    - The exception.
 284  *
 285  * Exceptions user callback routine, will be called upon an exception
 286  * passing the exception identification.
 287  *
 288  * Return: irq status
 289  */
 290 typedef irqreturn_t (fman_exceptions_cb)(struct fman *fman,
 291                                          enum fman_exceptions exception);
 292 /** fman_bus_error_cb
 293  * fman         - Pointer to FMan
 294  * port_id      - Port id
 295  * addr         - Address that caused the error
 296  * tnum         - Owner of error
 297  * liodn        - Logical IO device number
 298  *
 299  * Bus error user callback routine, will be called upon bus error,
 300  * passing parameters describing the errors and the owner.
 301  *
 302  * Return: IRQ status
 303  */
 304 typedef irqreturn_t (fman_bus_error_cb)(struct fman *fman, u8 port_id,
 305                                         u64 addr, u8 tnum, u16 liodn);
 306
 307 /* Structure that holds information received from device tree */
 308 struct fman_dts_params {
 309         void __iomem *base_addr;                /* FMan virtual address */
 310         struct resource *res;                   /* FMan memory resource */
 311         u8 id;                                  /* FMan ID */
 312
 313         int err_irq;                            /* FMan Error IRQ */
 314
 315         u16 clk_freq;                           /* FMan clock freq (In Mhz) */
 316
 317         u32 qman_channel_base;                  /* QMan channels base */
 318         u32 num_of_qman_channels;               /* Number of QMan channels */
 319
 320         struct resource muram_res;              /* MURAM resource */
 321 };
 322
 323 struct fman {
 324         struct device *dev;
 325         void __iomem *base_addr;
 326         struct fman_intr_src intr_mng[FMAN_EV_CNT];
 327
 328         struct fman_fpm_regs __iomem *fpm_regs;
 329         struct fman_bmi_regs __iomem *bmi_regs;
 330         struct fman_qmi_regs __iomem *qmi_regs;
 331         struct fman_dma_regs __iomem *dma_regs;
 332         struct fman_hwp_regs __iomem *hwp_regs;
 333         struct fman_kg_regs __iomem *kg_regs;
 334         fman_exceptions_cb *exception_cb;
 335         fman_bus_error_cb *bus_error_cb;
 336         /* Spinlock for FMan use */
 337         spinlock_t spinlock;
 338         struct fman_state_struct *state;
 339
 340         struct fman_cfg *cfg;
 341         struct muram_info *muram;
 342         struct fman_keygen *keygen;
 343         /* cam section in muram */
 344         unsigned long cam_offset;
 345         size_t cam_size;
 346         /* Fifo in MURAM */
 347         unsigned long fifo_offset;
 348         size_t fifo_size;
 349
 350         u32 liodn_base[64];
 351         u32 liodn_offset[64];
 352
 353         struct fman_dts_params dts_params;
 354 };
 355
 356 /* Structure for port-FM communication during fman_port_init. */
 357 struct fman_port_init_params {
 358         u8 port_id;                     /* port Id */
 359         enum fman_port_type port_type;  /* Port type */
 360         u16 port_speed;                 /* Port speed */
 361         u16 liodn_offset;               /* Port's requested resource */
 362         u8 num_of_tasks;                /* Port's requested resource */
 363         u8 num_of_extra_tasks;          /* Port's requested resource */
 364         u8 num_of_open_dmas;            /* Port's requested resource */
 365         u8 num_of_extra_open_dmas;      /* Port's requested resource */
 366         u32 size_of_fifo;               /* Port's requested resource */
 367         u32 extra_size_of_fifo;         /* Port's requested resource */
 368         u8 deq_pipeline_depth;          /* Port's requested resource */
 369         u16 max_frame_length;           /* Port's max frame length. */
 370         u16 liodn_base;
 371         /* LIODN base for this port, to be used together with LIODN offset. */
 372 };
 373
 374 void fman_get_revision(struct fman *fman, struct fman_rev_info *rev_info);
 375
 376 void fman_register_intr(struct fman *fman, enum fman_event_modules mod,
 377                         u8 mod_id, enum fman_intr_type intr_type,
 378                         void (*f_isr)(void *h_src_arg), void *h_src_arg);
 379
 380 void fman_unregister_intr(struct fman *fman, enum fman_event_modules mod,
 381                           u8 mod_id, enum fman_intr_type intr_type);
 382
 383 int fman_set_port_params(struct fman *fman,
 384                          struct fman_port_init_params *port_params);
 385
 386 int fman_reset_mac(struct fman *fman, u8 mac_id);
 387
 388 u16 fman_get_clock_freq(struct fman *fman);
 389
 390 u32 fman_get_bmi_max_fifo_size(struct fman *fman);
 391
 392 int fman_set_mac_max_frame(struct fman *fman, u8 mac_id, u16 mfl);
 393
 394 u32 fman_get_qman_channel_id(struct fman *fman, u32 port_id);
 395
 396 struct resource *fman_get_mem_region(struct fman *fman);
 397
 398 u16 fman_get_max_frm(void);
 399
 400 int fman_get_rx_extra_headroom(void);
 401
 402 #ifdef CONFIG_DPAA_ERRATUM_A050385
 403 bool fman_has_errata_a050385(void);
 404 #endif
 405
 406 struct fman *fman_bind(struct device *dev);
 407
 408 #endif /* __FM_H */