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

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