drivers/net/ethernet/freescale/fman/fman.c

   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 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  34
  35 #include <linux/fsl/guts.h>
  36 #include <linux/slab.h>
  37 #include <linux/delay.h>
  38 #include <linux/module.h>
  39 #include <linux/of_platform.h>
  40 #include <linux/clk.h>
  41 #include <linux/of_address.h>
  42 #include <linux/of_irq.h>
  43 #include <linux/interrupt.h>
  44 #include <linux/libfdt_env.h>
  45
  46 #include "fman.h"
  47 #include "fman_muram.h"
  48 #include "fman_keygen.h"
  49
  50 /* General defines */
  51 #define FMAN_LIODN_TBL                  64      /* size of LIODN table */
  52 #define MAX_NUM_OF_MACS                 10
  53 #define FM_NUM_OF_FMAN_CTRL_EVENT_REGS  4
  54 #define BASE_RX_PORTID                  0x08
  55 #define BASE_TX_PORTID                  0x28
  56
  57 /* Modules registers offsets */
  58 #define BMI_OFFSET              0x00080000
  59 #define QMI_OFFSET              0x00080400
  60 #define KG_OFFSET               0x000C1000
  61 #define DMA_OFFSET              0x000C2000
  62 #define FPM_OFFSET              0x000C3000
  63 #define IMEM_OFFSET             0x000C4000
  64 #define HWP_OFFSET              0x000C7000
  65 #define CGP_OFFSET              0x000DB000
  66
  67 /* Exceptions bit map */
  68 #define EX_DMA_BUS_ERROR                0x80000000
  69 #define EX_DMA_READ_ECC                 0x40000000
  70 #define EX_DMA_SYSTEM_WRITE_ECC 0x20000000
  71 #define EX_DMA_FM_WRITE_ECC             0x10000000
  72 #define EX_FPM_STALL_ON_TASKS           0x08000000
  73 #define EX_FPM_SINGLE_ECC               0x04000000
  74 #define EX_FPM_DOUBLE_ECC               0x02000000
  75 #define EX_QMI_SINGLE_ECC               0x01000000
  76 #define EX_QMI_DEQ_FROM_UNKNOWN_PORTID  0x00800000
  77 #define EX_QMI_DOUBLE_ECC               0x00400000
  78 #define EX_BMI_LIST_RAM_ECC             0x00200000
  79 #define EX_BMI_STORAGE_PROFILE_ECC      0x00100000
  80 #define EX_BMI_STATISTICS_RAM_ECC       0x00080000
  81 #define EX_IRAM_ECC                     0x00040000
  82 #define EX_MURAM_ECC                    0x00020000
  83 #define EX_BMI_DISPATCH_RAM_ECC 0x00010000
  84 #define EX_DMA_SINGLE_PORT_ECC          0x00008000
  85
  86 /* DMA defines */
  87 /* masks */
  88 #define DMA_MODE_BER                    0x00200000
  89 #define DMA_MODE_ECC                    0x00000020
  90 #define DMA_MODE_SECURE_PROT            0x00000800
  91 #define DMA_MODE_AXI_DBG_MASK           0x0F000000
  92
  93 #define DMA_TRANSFER_PORTID_MASK        0xFF000000
  94 #define DMA_TRANSFER_TNUM_MASK          0x00FF0000
  95 #define DMA_TRANSFER_LIODN_MASK 0x00000FFF
  96
  97 #define DMA_STATUS_BUS_ERR              0x08000000
  98 #define DMA_STATUS_READ_ECC             0x04000000
  99 #define DMA_STATUS_SYSTEM_WRITE_ECC     0x02000000
 100 #define DMA_STATUS_FM_WRITE_ECC 0x01000000
 101 #define DMA_STATUS_FM_SPDAT_ECC 0x00080000
 102
 103 #define DMA_MODE_CACHE_OR_SHIFT         30
 104 #define DMA_MODE_AXI_DBG_SHIFT                  24
 105 #define DMA_MODE_CEN_SHIFT                      13
 106 #define DMA_MODE_CEN_MASK                       0x00000007
 107 #define DMA_MODE_DBG_SHIFT                      7
 108 #define DMA_MODE_AID_MODE_SHIFT         4
 109
 110 #define DMA_THRESH_COMMQ_SHIFT                  24
 111 #define DMA_THRESH_READ_INT_BUF_SHIFT           16
 112 #define DMA_THRESH_READ_INT_BUF_MASK            0x0000003f
 113 #define DMA_THRESH_WRITE_INT_BUF_MASK           0x0000003f
 114
 115 #define DMA_TRANSFER_PORTID_SHIFT               24
 116 #define DMA_TRANSFER_TNUM_SHIFT         16
 117
 118 #define DMA_CAM_SIZEOF_ENTRY                    0x40
 119 #define DMA_CAM_UNITS                           8
 120
 121 #define DMA_LIODN_SHIFT         16
 122 #define DMA_LIODN_BASE_MASK     0x00000FFF
 123
 124 /* FPM defines */
 125 #define FPM_EV_MASK_DOUBLE_ECC          0x80000000
 126 #define FPM_EV_MASK_STALL               0x40000000
 127 #define FPM_EV_MASK_SINGLE_ECC          0x20000000
 128 #define FPM_EV_MASK_RELEASE_FM          0x00010000
 129 #define FPM_EV_MASK_DOUBLE_ECC_EN       0x00008000
 130 #define FPM_EV_MASK_STALL_EN            0x00004000
 131 #define FPM_EV_MASK_SINGLE_ECC_EN       0x00002000
 132 #define FPM_EV_MASK_EXTERNAL_HALT       0x00000008
 133 #define FPM_EV_MASK_ECC_ERR_HALT        0x00000004
 134
 135 #define FPM_RAM_MURAM_ECC               0x00008000
 136 #define FPM_RAM_IRAM_ECC                0x00004000
 137 #define FPM_IRAM_ECC_ERR_EX_EN          0x00020000
 138 #define FPM_MURAM_ECC_ERR_EX_EN 0x00040000
 139 #define FPM_RAM_IRAM_ECC_EN             0x40000000
 140 #define FPM_RAM_RAMS_ECC_EN             0x80000000
 141 #define FPM_RAM_RAMS_ECC_EN_SRC_SEL     0x08000000
 142
 143 #define FPM_REV1_MAJOR_MASK             0x0000FF00
 144 #define FPM_REV1_MINOR_MASK             0x000000FF
 145
 146 #define FPM_DISP_LIMIT_SHIFT            24
 147
 148 #define FPM_PRT_FM_CTL1                 0x00000001
 149 #define FPM_PRT_FM_CTL2                 0x00000002
 150 #define FPM_PORT_FM_CTL_PORTID_SHIFT    24
 151 #define FPM_PRC_ORA_FM_CTL_SEL_SHIFT    16
 152
 153 #define FPM_THR1_PRS_SHIFT              24
 154 #define FPM_THR1_KG_SHIFT               16
 155 #define FPM_THR1_PLCR_SHIFT             8
 156 #define FPM_THR1_BMI_SHIFT              0
 157
 158 #define FPM_THR2_QMI_ENQ_SHIFT          24
 159 #define FPM_THR2_QMI_DEQ_SHIFT          0
 160 #define FPM_THR2_FM_CTL1_SHIFT          16
 161 #define FPM_THR2_FM_CTL2_SHIFT          8
 162
 163 #define FPM_EV_MASK_CAT_ERR_SHIFT       1
 164 #define FPM_EV_MASK_DMA_ERR_SHIFT       0
 165
 166 #define FPM_REV1_MAJOR_SHIFT            8
 167
 168 #define FPM_RSTC_FM_RESET               0x80000000
 169 #define FPM_RSTC_MAC0_RESET             0x40000000
 170 #define FPM_RSTC_MAC1_RESET             0x20000000
 171 #define FPM_RSTC_MAC2_RESET             0x10000000
 172 #define FPM_RSTC_MAC3_RESET             0x08000000
 173 #define FPM_RSTC_MAC8_RESET             0x04000000
 174 #define FPM_RSTC_MAC4_RESET             0x02000000
 175 #define FPM_RSTC_MAC5_RESET             0x01000000
 176 #define FPM_RSTC_MAC6_RESET             0x00800000
 177 #define FPM_RSTC_MAC7_RESET             0x00400000
 178 #define FPM_RSTC_MAC9_RESET             0x00200000
 179
 180 #define FPM_TS_INT_SHIFT                16
 181 #define FPM_TS_CTL_EN                   0x80000000
 182
 183 /* BMI defines */
 184 #define BMI_INIT_START                          0x80000000
 185 #define BMI_ERR_INTR_EN_STORAGE_PROFILE_ECC     0x80000000
 186 #define BMI_ERR_INTR_EN_LIST_RAM_ECC            0x40000000
 187 #define BMI_ERR_INTR_EN_STATISTICS_RAM_ECC      0x20000000
 188 #define BMI_ERR_INTR_EN_DISPATCH_RAM_ECC        0x10000000
 189 #define BMI_NUM_OF_TASKS_MASK                   0x3F000000
 190 #define BMI_NUM_OF_EXTRA_TASKS_MASK             0x000F0000
 191 #define BMI_NUM_OF_DMAS_MASK                    0x00000F00
 192 #define BMI_NUM_OF_EXTRA_DMAS_MASK              0x0000000F
 193 #define BMI_FIFO_SIZE_MASK                      0x000003FF
 194 #define BMI_EXTRA_FIFO_SIZE_MASK                0x03FF0000
 195 #define BMI_CFG2_DMAS_MASK                      0x0000003F
 196 #define BMI_CFG2_TASKS_MASK                     0x0000003F
 197
 198 #define BMI_CFG2_TASKS_SHIFT            16
 199 #define BMI_CFG2_DMAS_SHIFT             0
 200 #define BMI_CFG1_FIFO_SIZE_SHIFT        16
 201 #define BMI_NUM_OF_TASKS_SHIFT          24
 202 #define BMI_EXTRA_NUM_OF_TASKS_SHIFT    16
 203 #define BMI_NUM_OF_DMAS_SHIFT           8
 204 #define BMI_EXTRA_NUM_OF_DMAS_SHIFT     0
 205
 206 #define BMI_FIFO_ALIGN                  0x100
 207
 208 #define BMI_EXTRA_FIFO_SIZE_SHIFT       16
 209
 210 /* QMI defines */
 211 #define QMI_CFG_ENQ_EN                  0x80000000
 212 #define QMI_CFG_DEQ_EN                  0x40000000
 213 #define QMI_CFG_EN_COUNTERS             0x10000000
 214 #define QMI_CFG_DEQ_MASK                0x0000003F
 215 #define QMI_CFG_ENQ_MASK                0x00003F00
 216 #define QMI_CFG_ENQ_SHIFT               8
 217
 218 #define QMI_ERR_INTR_EN_DOUBLE_ECC      0x80000000
 219 #define QMI_ERR_INTR_EN_DEQ_FROM_DEF    0x40000000
 220 #define QMI_INTR_EN_SINGLE_ECC          0x80000000
 221
 222 #define QMI_GS_HALT_NOT_BUSY            0x00000002
 223
 224 /* HWP defines */
 225 #define HWP_RPIMAC_PEN                  0x00000001
 226
 227 /* IRAM defines */
 228 #define IRAM_IADD_AIE                   0x80000000
 229 #define IRAM_READY                      0x80000000
 230
 231 /* Default values */
 232 #define DEFAULT_CATASTROPHIC_ERR                0
 233 #define DEFAULT_DMA_ERR                         0
 234 #define DEFAULT_AID_MODE                        FMAN_DMA_AID_OUT_TNUM
 235 #define DEFAULT_DMA_COMM_Q_LOW                  0x2A
 236 #define DEFAULT_DMA_COMM_Q_HIGH         0x3F
 237 #define DEFAULT_CACHE_OVERRIDE                  0
 238 #define DEFAULT_DMA_CAM_NUM_OF_ENTRIES          64
 239 #define DEFAULT_DMA_DBG_CNT_MODE                0
 240 #define DEFAULT_DMA_SOS_EMERGENCY               0
 241 #define DEFAULT_DMA_WATCHDOG                    0
 242 #define DEFAULT_DISP_LIMIT                      0
 243 #define DEFAULT_PRS_DISP_TH                     16
 244 #define DEFAULT_PLCR_DISP_TH                    16
 245 #define DEFAULT_KG_DISP_TH                      16
 246 #define DEFAULT_BMI_DISP_TH                     16
 247 #define DEFAULT_QMI_ENQ_DISP_TH         16
 248 #define DEFAULT_QMI_DEQ_DISP_TH         16
 249 #define DEFAULT_FM_CTL1_DISP_TH         16
 250 #define DEFAULT_FM_CTL2_DISP_TH         16
 251
 252 #define DFLT_AXI_DBG_NUM_OF_BEATS               1
 253
 254 #define DFLT_DMA_READ_INT_BUF_LOW(dma_thresh_max_buf)   \
 255         ((dma_thresh_max_buf + 1) / 2)
 256 #define DFLT_DMA_READ_INT_BUF_HIGH(dma_thresh_max_buf)  \
 257         ((dma_thresh_max_buf + 1) * 3 / 4)
 258 #define DFLT_DMA_WRITE_INT_BUF_LOW(dma_thresh_max_buf)  \
 259         ((dma_thresh_max_buf + 1) / 2)
 260 #define DFLT_DMA_WRITE_INT_BUF_HIGH(dma_thresh_max_buf)\
 261         ((dma_thresh_max_buf + 1) * 3 / 4)
 262
 263 #define DMA_COMM_Q_LOW_FMAN_V3          0x2A
 264 #define DMA_COMM_Q_LOW_FMAN_V2(dma_thresh_max_commq)            \
 265         ((dma_thresh_max_commq + 1) / 2)
 266 #define DFLT_DMA_COMM_Q_LOW(major, dma_thresh_max_commq)        \
 267         ((major == 6) ? DMA_COMM_Q_LOW_FMAN_V3 :                \
 268         DMA_COMM_Q_LOW_FMAN_V2(dma_thresh_max_commq))
 269
 270 #define DMA_COMM_Q_HIGH_FMAN_V3 0x3f
 271 #define DMA_COMM_Q_HIGH_FMAN_V2(dma_thresh_max_commq)           \
 272         ((dma_thresh_max_commq + 1) * 3 / 4)
 273 #define DFLT_DMA_COMM_Q_HIGH(major, dma_thresh_max_commq)       \
 274         ((major == 6) ? DMA_COMM_Q_HIGH_FMAN_V3 :               \
 275         DMA_COMM_Q_HIGH_FMAN_V2(dma_thresh_max_commq))
 276
 277 #define TOTAL_NUM_OF_TASKS_FMAN_V3L     59
 278 #define TOTAL_NUM_OF_TASKS_FMAN_V3H     124
 279 #define DFLT_TOTAL_NUM_OF_TASKS(major, minor, bmi_max_num_of_tasks)     \
 280         ((major == 6) ? ((minor == 1 || minor == 4) ?                   \
 281         TOTAL_NUM_OF_TASKS_FMAN_V3L : TOTAL_NUM_OF_TASKS_FMAN_V3H) :    \
 282         bmi_max_num_of_tasks)
 283
 284 #define DMA_CAM_NUM_OF_ENTRIES_FMAN_V3          64
 285 #define DMA_CAM_NUM_OF_ENTRIES_FMAN_V2          32
 286 #define DFLT_DMA_CAM_NUM_OF_ENTRIES(major)                      \
 287         (major == 6 ? DMA_CAM_NUM_OF_ENTRIES_FMAN_V3 :          \
 288         DMA_CAM_NUM_OF_ENTRIES_FMAN_V2)
 289
 290 #define FM_TIMESTAMP_1_USEC_BIT             8
 291
 292 /* Defines used for enabling/disabling FMan interrupts */
 293 #define ERR_INTR_EN_DMA         0x00010000
 294 #define ERR_INTR_EN_FPM         0x80000000
 295 #define ERR_INTR_EN_BMI         0x00800000
 296 #define ERR_INTR_EN_QMI         0x00400000
 297 #define ERR_INTR_EN_MURAM       0x00040000
 298 #define ERR_INTR_EN_MAC0        0x00004000
 299 #define ERR_INTR_EN_MAC1        0x00002000
 300 #define ERR_INTR_EN_MAC2        0x00001000
 301 #define ERR_INTR_EN_MAC3        0x00000800
 302 #define ERR_INTR_EN_MAC4        0x00000400
 303 #define ERR_INTR_EN_MAC5        0x00000200
 304 #define ERR_INTR_EN_MAC6        0x00000100
 305 #define ERR_INTR_EN_MAC7        0x00000080
 306 #define ERR_INTR_EN_MAC8        0x00008000
 307 #define ERR_INTR_EN_MAC9        0x00000040
 308
 309 #define INTR_EN_QMI             0x40000000
 310 #define INTR_EN_MAC0            0x00080000
 311 #define INTR_EN_MAC1            0x00040000
 312 #define INTR_EN_MAC2            0x00020000
 313 #define INTR_EN_MAC3            0x00010000
 314 #define INTR_EN_MAC4            0x00000040
 315 #define INTR_EN_MAC5            0x00000020
 316 #define INTR_EN_MAC6            0x00000008
 317 #define INTR_EN_MAC7            0x00000002
 318 #define INTR_EN_MAC8            0x00200000
 319 #define INTR_EN_MAC9            0x00100000
 320 #define INTR_EN_REV0            0x00008000
 321 #define INTR_EN_REV1            0x00004000
 322 #define INTR_EN_REV2            0x00002000
 323 #define INTR_EN_REV3            0x00001000
 324 #define INTR_EN_TMR             0x01000000
 325
 326 enum fman_dma_aid_mode {
 327         FMAN_DMA_AID_OUT_PORT_ID = 0,             /* 4 LSB of PORT_ID */
 328         FMAN_DMA_AID_OUT_TNUM                     /* 4 LSB of TNUM */
 329 };
 330
 331 struct fman_iram_regs {
 332         u32 iadd;       /* FM IRAM instruction address register */
 333         u32 idata;      /* FM IRAM instruction data register */
 334         u32 itcfg;      /* FM IRAM timing config register */
 335         u32 iready;     /* FM IRAM ready register */
 336 };
 337
 338 struct fman_fpm_regs {
 339         u32 fmfp_tnc;           /* FPM TNUM Control 0x00 */
 340         u32 fmfp_prc;           /* FPM Port_ID FmCtl Association 0x04 */
 341         u32 fmfp_brkc;          /* FPM Breakpoint Control 0x08 */
 342         u32 fmfp_mxd;           /* FPM Flush Control 0x0c */
 343         u32 fmfp_dist1;         /* FPM Dispatch Thresholds1 0x10 */
 344         u32 fmfp_dist2;         /* FPM Dispatch Thresholds2 0x14 */
 345         u32 fm_epi;             /* FM Error Pending Interrupts 0x18 */
 346         u32 fm_rie;             /* FM Error Interrupt Enable 0x1c */
 347         u32 fmfp_fcev[4];       /* FPM FMan-Controller Event 1-4 0x20-0x2f */
 348         u32 res0030[4];         /* res 0x30 - 0x3f */
 349         u32 fmfp_cee[4];        /* PM FMan-Controller Event 1-4 0x40-0x4f */
 350         u32 res0050[4];         /* res 0x50-0x5f */
 351         u32 fmfp_tsc1;          /* FPM TimeStamp Control1 0x60 */
 352         u32 fmfp_tsc2;          /* FPM TimeStamp Control2 0x64 */
 353         u32 fmfp_tsp;           /* FPM Time Stamp 0x68 */
 354         u32 fmfp_tsf;           /* FPM Time Stamp Fraction 0x6c */
 355         u32 fm_rcr;             /* FM Rams Control 0x70 */
 356         u32 fmfp_extc;          /* FPM External Requests Control 0x74 */
 357         u32 fmfp_ext1;          /* FPM External Requests Config1 0x78 */
 358         u32 fmfp_ext2;          /* FPM External Requests Config2 0x7c */
 359         u32 fmfp_drd[16];       /* FPM Data_Ram Data 0-15 0x80 - 0xbf */
 360         u32 fmfp_dra;           /* FPM Data Ram Access 0xc0 */
 361         u32 fm_ip_rev_1;        /* FM IP Block Revision 1 0xc4 */
 362         u32 fm_ip_rev_2;        /* FM IP Block Revision 2 0xc8 */
 363         u32 fm_rstc;            /* FM Reset Command 0xcc */
 364         u32 fm_cld;             /* FM Classifier Debug 0xd0 */
 365         u32 fm_npi;             /* FM Normal Pending Interrupts 0xd4 */
 366         u32 fmfp_exte;          /* FPM External Requests Enable 0xd8 */
 367         u32 fmfp_ee;            /* FPM Event&Mask 0xdc */
 368         u32 fmfp_cev[4];        /* FPM CPU Event 1-4 0xe0-0xef */
 369         u32 res00f0[4];         /* res 0xf0-0xff */
 370         u32 fmfp_ps[50];        /* FPM Port Status 0x100-0x1c7 */
 371         u32 res01c8[14];        /* res 0x1c8-0x1ff */
 372         u32 fmfp_clfabc;        /* FPM CLFABC 0x200 */
 373         u32 fmfp_clfcc;         /* FPM CLFCC 0x204 */
 374         u32 fmfp_clfaval;       /* FPM CLFAVAL 0x208 */
 375         u32 fmfp_clfbval;       /* FPM CLFBVAL 0x20c */
 376         u32 fmfp_clfcval;       /* FPM CLFCVAL 0x210 */
 377         u32 fmfp_clfamsk;       /* FPM CLFAMSK 0x214 */
 378         u32 fmfp_clfbmsk;       /* FPM CLFBMSK 0x218 */
 379         u32 fmfp_clfcmsk;       /* FPM CLFCMSK 0x21c */
 380         u32 fmfp_clfamc;        /* FPM CLFAMC 0x220 */
 381         u32 fmfp_clfbmc;        /* FPM CLFBMC 0x224 */
 382         u32 fmfp_clfcmc;        /* FPM CLFCMC 0x228 */
 383         u32 fmfp_decceh;        /* FPM DECCEH 0x22c */
 384         u32 res0230[116];       /* res 0x230 - 0x3ff */
 385         u32 fmfp_ts[128];       /* 0x400: FPM Task Status 0x400 - 0x5ff */
 386         u32 res0600[0x400 - 384];
 387 };
 388
 389 struct fman_bmi_regs {
 390         u32 fmbm_init;          /* BMI Initialization 0x00 */
 391         u32 fmbm_cfg1;          /* BMI Configuration 1 0x04 */
 392         u32 fmbm_cfg2;          /* BMI Configuration 2 0x08 */
 393         u32 res000c[5];         /* 0x0c - 0x1f */
 394         u32 fmbm_ievr;          /* Interrupt Event Register 0x20 */
 395         u32 fmbm_ier;           /* Interrupt Enable Register 0x24 */
 396         u32 fmbm_ifr;           /* Interrupt Force Register 0x28 */
 397         u32 res002c[5];         /* 0x2c - 0x3f */
 398         u32 fmbm_arb[8];        /* BMI Arbitration 0x40 - 0x5f */
 399         u32 res0060[12];        /* 0x60 - 0x8f */
 400         u32 fmbm_dtc[3];        /* Debug Trap Counter 0x90 - 0x9b */
 401         u32 res009c;            /* 0x9c */
 402         u32 fmbm_dcv[3][4];     /* Debug Compare val 0xa0-0xcf */
 403         u32 fmbm_dcm[3][4];     /* Debug Compare Mask 0xd0-0xff */
 404         u32 fmbm_gde;           /* BMI Global Debug Enable 0x100 */
 405         u32 fmbm_pp[63];        /* BMI Port Parameters 0x104 - 0x1ff */
 406         u32 res0200;            /* 0x200 */
 407         u32 fmbm_pfs[63];       /* BMI Port FIFO Size 0x204 - 0x2ff */
 408         u32 res0300;            /* 0x300 */
 409         u32 fmbm_spliodn[63];   /* Port Partition ID 0x304 - 0x3ff */
 410 };
 411
 412 struct fman_qmi_regs {
 413         u32 fmqm_gc;            /* General Configuration Register 0x00 */
 414         u32 res0004;            /* 0x04 */
 415         u32 fmqm_eie;           /* Error Interrupt Event Register 0x08 */
 416         u32 fmqm_eien;          /* Error Interrupt Enable Register 0x0c */
 417         u32 fmqm_eif;           /* Error Interrupt Force Register 0x10 */
 418         u32 fmqm_ie;            /* Interrupt Event Register 0x14 */
 419         u32 fmqm_ien;           /* Interrupt Enable Register 0x18 */
 420         u32 fmqm_if;            /* Interrupt Force Register 0x1c */
 421         u32 fmqm_gs;            /* Global Status Register 0x20 */
 422         u32 fmqm_ts;            /* Task Status Register 0x24 */
 423         u32 fmqm_etfc;          /* Enqueue Total Frame Counter 0x28 */
 424         u32 fmqm_dtfc;          /* Dequeue Total Frame Counter 0x2c */
 425         u32 fmqm_dc0;           /* Dequeue Counter 0 0x30 */
 426         u32 fmqm_dc1;           /* Dequeue Counter 1 0x34 */
 427         u32 fmqm_dc2;           /* Dequeue Counter 2 0x38 */
 428         u32 fmqm_dc3;           /* Dequeue Counter 3 0x3c */
 429         u32 fmqm_dfdc;          /* Dequeue FQID from Default Counter 0x40 */
 430         u32 fmqm_dfcc;          /* Dequeue FQID from Context Counter 0x44 */
 431         u32 fmqm_dffc;          /* Dequeue FQID from FD Counter 0x48 */
 432         u32 fmqm_dcc;           /* Dequeue Confirm Counter 0x4c */
 433         u32 res0050[7];         /* 0x50 - 0x6b */
 434         u32 fmqm_tapc;          /* Tnum Aging Period Control 0x6c */
 435         u32 fmqm_dmcvc;         /* Dequeue MAC Command Valid Counter 0x70 */
 436         u32 fmqm_difdcc;        /* Dequeue Invalid FD Command Counter 0x74 */
 437         u32 fmqm_da1v;          /* Dequeue A1 Valid Counter 0x78 */
 438         u32 res007c;            /* 0x7c */
 439         u32 fmqm_dtc;           /* 0x80 Debug Trap Counter 0x80 */
 440         u32 fmqm_efddd;         /* 0x84 Enqueue Frame desc Dynamic dbg 0x84 */
 441         u32 res0088[2];         /* 0x88 - 0x8f */
 442         struct {
 443                 u32 fmqm_dtcfg1;        /* 0x90 dbg trap cfg 1 Register 0x00 */
 444                 u32 fmqm_dtval1;        /* Debug Trap Value 1 Register 0x04 */
 445                 u32 fmqm_dtm1;          /* Debug Trap Mask 1 Register 0x08 */
 446                 u32 fmqm_dtc1;          /* Debug Trap Counter 1 Register 0x0c */
 447                 u32 fmqm_dtcfg2;        /* dbg Trap cfg 2 Register 0x10 */
 448                 u32 fmqm_dtval2;        /* Debug Trap Value 2 Register 0x14 */
 449                 u32 fmqm_dtm2;          /* Debug Trap Mask 2 Register 0x18 */
 450                 u32 res001c;            /* 0x1c */
 451         } dbg_traps[3];                 /* 0x90 - 0xef */
 452         u8 res00f0[0x400 - 0xf0];       /* 0xf0 - 0x3ff */
 453 };
 454
 455 struct fman_dma_regs {
 456         u32 fmdmsr;     /* FM DMA status register 0x00 */
 457         u32 fmdmmr;     /* FM DMA mode register 0x04 */
 458         u32 fmdmtr;     /* FM DMA bus threshold register 0x08 */
 459         u32 fmdmhy;     /* FM DMA bus hysteresis register 0x0c */
 460         u32 fmdmsetr;   /* FM DMA SOS emergency Threshold Register 0x10 */
 461         u32 fmdmtah;    /* FM DMA transfer bus address high reg 0x14 */
 462         u32 fmdmtal;    /* FM DMA transfer bus address low reg 0x18 */
 463         u32 fmdmtcid;   /* FM DMA transfer bus communication ID reg 0x1c */
 464         u32 fmdmra;     /* FM DMA bus internal ram address register 0x20 */
 465         u32 fmdmrd;     /* FM DMA bus internal ram data register 0x24 */
 466         u32 fmdmwcr;    /* FM DMA CAM watchdog counter value 0x28 */
 467         u32 fmdmebcr;   /* FM DMA CAM base in MURAM register 0x2c */
 468         u32 fmdmccqdr;  /* FM DMA CAM and CMD Queue Debug reg 0x30 */
 469         u32 fmdmccqvr1; /* FM DMA CAM and CMD Queue Value reg #1 0x34 */
 470         u32 fmdmccqvr2; /* FM DMA CAM and CMD Queue Value reg #2 0x38 */
 471         u32 fmdmcqvr3;  /* FM DMA CMD Queue Value register #3 0x3c */
 472         u32 fmdmcqvr4;  /* FM DMA CMD Queue Value register #4 0x40 */
 473         u32 fmdmcqvr5;  /* FM DMA CMD Queue Value register #5 0x44 */
 474         u32 fmdmsefrc;  /* FM DMA Semaphore Entry Full Reject Cntr 0x48 */
 475         u32 fmdmsqfrc;  /* FM DMA Semaphore Queue Full Reject Cntr 0x4c */
 476         u32 fmdmssrc;   /* FM DMA Semaphore SYNC Reject Counter 0x50 */
 477         u32 fmdmdcr;    /* FM DMA Debug Counter 0x54 */
 478         u32 fmdmemsr;   /* FM DMA Emergency Smoother Register 0x58 */
 479         u32 res005c;    /* 0x5c */
 480         u32 fmdmplr[FMAN_LIODN_TBL / 2];        /* DMA LIODN regs 0x60-0xdf */
 481         u32 res00e0[0x400 - 56];
 482 };
 483
 484 struct fman_hwp_regs {
 485         u32 res0000[0x844 / 4];         /* 0x000..0x843 */
 486         u32 fmprrpimac; /* FM Parser Internal memory access control */
 487         u32 res[(0x1000 - 0x848) / 4];  /* 0x848..0xFFF */
 488 };
 489
 490 /* Structure that holds current FMan state.
 491  * Used for saving run time information.
 492  */
 493 struct fman_state_struct {
 494         u8 fm_id;
 495         u16 fm_clk_freq;
 496         struct fman_rev_info rev_info;
 497         bool enabled_time_stamp;
 498         u8 count1_micro_bit;
 499         u8 total_num_of_tasks;
 500         u8 accumulated_num_of_tasks;
 501         u32 accumulated_fifo_size;
 502         u8 accumulated_num_of_open_dmas;
 503         u8 accumulated_num_of_deq_tnums;
 504         u32 exceptions;
 505         u32 extra_fifo_pool_size;
 506         u8 extra_tasks_pool_size;
 507         u8 extra_open_dmas_pool_size;
 508         u16 port_mfl[MAX_NUM_OF_MACS];
 509         u16 mac_mfl[MAX_NUM_OF_MACS];
 510
 511         /* SOC specific */
 512         u32 fm_iram_size;
 513         /* DMA */
 514         u32 dma_thresh_max_commq;
 515         u32 dma_thresh_max_buf;
 516         u32 max_num_of_open_dmas;
 517         /* QMI */
 518         u32 qmi_max_num_of_tnums;
 519         u32 qmi_def_tnums_thresh;
 520         /* BMI */
 521         u32 bmi_max_num_of_tasks;
 522         u32 bmi_max_fifo_size;
 523         /* General */
 524         u32 fm_port_num_of_cg;
 525         u32 num_of_rx_ports;
 526         u32 total_fifo_size;
 527
 528         u32 qman_channel_base;
 529         u32 num_of_qman_channels;
 530
 531         struct resource *res;
 532 };
 533
 534 /* Structure that holds FMan initial configuration */
 535 struct fman_cfg {
 536         u8 disp_limit_tsh;
 537         u8 prs_disp_tsh;
 538         u8 plcr_disp_tsh;
 539         u8 kg_disp_tsh;
 540         u8 bmi_disp_tsh;
 541         u8 qmi_enq_disp_tsh;
 542         u8 qmi_deq_disp_tsh;
 543         u8 fm_ctl1_disp_tsh;
 544         u8 fm_ctl2_disp_tsh;
 545         int dma_cache_override;
 546         enum fman_dma_aid_mode dma_aid_mode;
 547         u32 dma_axi_dbg_num_of_beats;
 548         u32 dma_cam_num_of_entries;
 549         u32 dma_watchdog;
 550         u8 dma_comm_qtsh_asrt_emer;
 551         u32 dma_write_buf_tsh_asrt_emer;
 552         u32 dma_read_buf_tsh_asrt_emer;
 553         u8 dma_comm_qtsh_clr_emer;
 554         u32 dma_write_buf_tsh_clr_emer;
 555         u32 dma_read_buf_tsh_clr_emer;
 556         u32 dma_sos_emergency;
 557         int dma_dbg_cnt_mode;
 558         int catastrophic_err;
 559         int dma_err;
 560         u32 exceptions;
 561         u16 clk_freq;
 562         u32 cam_base_addr;
 563         u32 fifo_base_addr;
 564         u32 total_fifo_size;
 565         u32 total_num_of_tasks;
 566         u32 qmi_def_tnums_thresh;
 567 };
 568
 569 static irqreturn_t fman_exceptions(struct fman *fman,
 570                                    enum fman_exceptions exception)
 571 {
 572         dev_dbg(fman->dev, "%s: FMan[%d] exception %d\n",
 573                 __func__, fman->state->fm_id, exception);
 574
 575         return IRQ_HANDLED;
 576 }
 577
 578 static irqreturn_t fman_bus_error(struct fman *fman, u8 __maybe_unused port_id,
 579                                   u64 __maybe_unused addr,
 580                                   u8 __maybe_unused tnum,
 581                                   u16 __maybe_unused liodn)
 582 {
 583         dev_dbg(fman->dev, "%s: FMan[%d] bus error: port_id[%d]\n",
 584                 __func__, fman->state->fm_id, port_id);
 585
 586         return IRQ_HANDLED;
 587 }
 588
 589 static inline irqreturn_t call_mac_isr(struct fman *fman, u8 id)
 590 {
 591         if (fman->intr_mng[id].isr_cb) {
 592                 fman->intr_mng[id].isr_cb(fman->intr_mng[id].src_handle);
 593
 594                 return IRQ_HANDLED;
 595         }
 596
 597         return IRQ_NONE;
 598 }
 599
 600 static inline u8 hw_port_id_to_sw_port_id(u8 major, u8 hw_port_id)
 601 {
 602         u8 sw_port_id = 0;
 603
 604         if (hw_port_id >= BASE_TX_PORTID)
 605                 sw_port_id = hw_port_id - BASE_TX_PORTID;
 606         else if (hw_port_id >= BASE_RX_PORTID)
 607                 sw_port_id = hw_port_id - BASE_RX_PORTID;
 608         else
 609                 sw_port_id = 0;
 610
 611         return sw_port_id;
 612 }
 613
 614 static void set_port_order_restoration(struct fman_fpm_regs __iomem *fpm_rg,
 615                                        u8 port_id)
 616 {
 617         u32 tmp = 0;
 618
 619         tmp = port_id << FPM_PORT_FM_CTL_PORTID_SHIFT;
 620
 621         tmp |= FPM_PRT_FM_CTL2 | FPM_PRT_FM_CTL1;
 622
 623         /* order restoration */
 624         if (port_id % 2)
 625                 tmp |= FPM_PRT_FM_CTL1 << FPM_PRC_ORA_FM_CTL_SEL_SHIFT;
 626         else
 627                 tmp |= FPM_PRT_FM_CTL2 << FPM_PRC_ORA_FM_CTL_SEL_SHIFT;
 628
 629         iowrite32be(tmp, &fpm_rg->fmfp_prc);
 630 }
 631
 632 static void set_port_liodn(struct fman *fman, u8 port_id,
 633                            u32 liodn_base, u32 liodn_ofst)
 634 {
 635         u32 tmp;
 636
 637         /* set LIODN base for this port */
 638         tmp = ioread32be(&fman->dma_regs->fmdmplr[port_id / 2]);
 639         if (port_id % 2) {
 640                 tmp &= ~DMA_LIODN_BASE_MASK;
 641                 tmp |= liodn_base;
 642         } else {
 643                 tmp &= ~(DMA_LIODN_BASE_MASK << DMA_LIODN_SHIFT);
 644                 tmp |= liodn_base << DMA_LIODN_SHIFT;
 645         }
 646         iowrite32be(tmp, &fman->dma_regs->fmdmplr[port_id / 2]);
 647         iowrite32be(liodn_ofst, &fman->bmi_regs->fmbm_spliodn[port_id - 1]);
 648 }
 649
 650 static void enable_rams_ecc(struct fman_fpm_regs __iomem *fpm_rg)
 651 {
 652         u32 tmp;
 653
 654         tmp = ioread32be(&fpm_rg->fm_rcr);
 655         if (tmp & FPM_RAM_RAMS_ECC_EN_SRC_SEL)
 656                 iowrite32be(tmp | FPM_RAM_IRAM_ECC_EN, &fpm_rg->fm_rcr);
 657         else
 658                 iowrite32be(tmp | FPM_RAM_RAMS_ECC_EN |
 659                             FPM_RAM_IRAM_ECC_EN, &fpm_rg->fm_rcr);
 660 }
 661
 662 static void disable_rams_ecc(struct fman_fpm_regs __iomem *fpm_rg)
 663 {
 664         u32 tmp;
 665
 666         tmp = ioread32be(&fpm_rg->fm_rcr);
 667         if (tmp & FPM_RAM_RAMS_ECC_EN_SRC_SEL)
 668                 iowrite32be(tmp & ~FPM_RAM_IRAM_ECC_EN, &fpm_rg->fm_rcr);
 669         else
 670                 iowrite32be(tmp & ~(FPM_RAM_RAMS_ECC_EN | FPM_RAM_IRAM_ECC_EN),
 671                             &fpm_rg->fm_rcr);
 672 }
 673
 674 static void fman_defconfig(struct fman_cfg *cfg)
 675 {
 676         memset(cfg, 0, sizeof(struct fman_cfg));
 677
 678         cfg->catastrophic_err = DEFAULT_CATASTROPHIC_ERR;
 679         cfg->dma_err = DEFAULT_DMA_ERR;
 680         cfg->dma_aid_mode = DEFAULT_AID_MODE;
 681         cfg->dma_comm_qtsh_clr_emer = DEFAULT_DMA_COMM_Q_LOW;
 682         cfg->dma_comm_qtsh_asrt_emer = DEFAULT_DMA_COMM_Q_HIGH;
 683         cfg->dma_cache_override = DEFAULT_CACHE_OVERRIDE;
 684         cfg->dma_cam_num_of_entries = DEFAULT_DMA_CAM_NUM_OF_ENTRIES;
 685         cfg->dma_dbg_cnt_mode = DEFAULT_DMA_DBG_CNT_MODE;
 686         cfg->dma_sos_emergency = DEFAULT_DMA_SOS_EMERGENCY;
 687         cfg->dma_watchdog = DEFAULT_DMA_WATCHDOG;
 688         cfg->disp_limit_tsh = DEFAULT_DISP_LIMIT;
 689         cfg->prs_disp_tsh = DEFAULT_PRS_DISP_TH;
 690         cfg->plcr_disp_tsh = DEFAULT_PLCR_DISP_TH;
 691         cfg->kg_disp_tsh = DEFAULT_KG_DISP_TH;
 692         cfg->bmi_disp_tsh = DEFAULT_BMI_DISP_TH;
 693         cfg->qmi_enq_disp_tsh = DEFAULT_QMI_ENQ_DISP_TH;
 694         cfg->qmi_deq_disp_tsh = DEFAULT_QMI_DEQ_DISP_TH;
 695         cfg->fm_ctl1_disp_tsh = DEFAULT_FM_CTL1_DISP_TH;
 696         cfg->fm_ctl2_disp_tsh = DEFAULT_FM_CTL2_DISP_TH;
 697 }
 698
 699 static int dma_init(struct fman *fman)
 700 {
 701         struct fman_dma_regs __iomem *dma_rg = fman->dma_regs;
 702         struct fman_cfg *cfg = fman->cfg;
 703         u32 tmp_reg;
 704
 705         /* Init DMA Registers */
 706
 707         /* clear status reg events */
 708         tmp_reg = (DMA_STATUS_BUS_ERR | DMA_STATUS_READ_ECC |
 709                    DMA_STATUS_SYSTEM_WRITE_ECC | DMA_STATUS_FM_WRITE_ECC);
 710         iowrite32be(ioread32be(&dma_rg->fmdmsr) | tmp_reg, &dma_rg->fmdmsr);
 711
 712         /* configure mode register */
 713         tmp_reg = 0;
 714         tmp_reg |= cfg->dma_cache_override << DMA_MODE_CACHE_OR_SHIFT;
 715         if (cfg->exceptions & EX_DMA_BUS_ERROR)
 716                 tmp_reg |= DMA_MODE_BER;
 717         if ((cfg->exceptions & EX_DMA_SYSTEM_WRITE_ECC) |
 718             (cfg->exceptions & EX_DMA_READ_ECC) |
 719             (cfg->exceptions & EX_DMA_FM_WRITE_ECC))
 720                 tmp_reg |= DMA_MODE_ECC;
 721         if (cfg->dma_axi_dbg_num_of_beats)
 722                 tmp_reg |= (DMA_MODE_AXI_DBG_MASK &
 723                         ((cfg->dma_axi_dbg_num_of_beats - 1)
 724                         << DMA_MODE_AXI_DBG_SHIFT));
 725
 726         tmp_reg |= (((cfg->dma_cam_num_of_entries / DMA_CAM_UNITS) - 1) &
 727                 DMA_MODE_CEN_MASK) << DMA_MODE_CEN_SHIFT;
 728         tmp_reg |= DMA_MODE_SECURE_PROT;
 729         tmp_reg |= cfg->dma_dbg_cnt_mode << DMA_MODE_DBG_SHIFT;
 730         tmp_reg |= cfg->dma_aid_mode << DMA_MODE_AID_MODE_SHIFT;
 731
 732         iowrite32be(tmp_reg, &dma_rg->fmdmmr);
 733
 734         /* configure thresholds register */
 735         tmp_reg = ((u32)cfg->dma_comm_qtsh_asrt_emer <<
 736                 DMA_THRESH_COMMQ_SHIFT);
 737         tmp_reg |= (cfg->dma_read_buf_tsh_asrt_emer &
 738                 DMA_THRESH_READ_INT_BUF_MASK) << DMA_THRESH_READ_INT_BUF_SHIFT;
 739         tmp_reg |= cfg->dma_write_buf_tsh_asrt_emer &
 740                 DMA_THRESH_WRITE_INT_BUF_MASK;
 741
 742         iowrite32be(tmp_reg, &dma_rg->fmdmtr);
 743
 744         /* configure hysteresis register */
 745         tmp_reg = ((u32)cfg->dma_comm_qtsh_clr_emer <<
 746                 DMA_THRESH_COMMQ_SHIFT);
 747         tmp_reg |= (cfg->dma_read_buf_tsh_clr_emer &
 748                 DMA_THRESH_READ_INT_BUF_MASK) << DMA_THRESH_READ_INT_BUF_SHIFT;
 749         tmp_reg |= cfg->dma_write_buf_tsh_clr_emer &
 750                 DMA_THRESH_WRITE_INT_BUF_MASK;
 751
 752         iowrite32be(tmp_reg, &dma_rg->fmdmhy);
 753
 754         /* configure emergency threshold */
 755         iowrite32be(cfg->dma_sos_emergency, &dma_rg->fmdmsetr);
 756
 757         /* configure Watchdog */
 758         iowrite32be((cfg->dma_watchdog * cfg->clk_freq), &dma_rg->fmdmwcr);
 759
 760         iowrite32be(cfg->cam_base_addr, &dma_rg->fmdmebcr);
 761
 762         /* Allocate MURAM for CAM */
 763         fman->cam_size =
 764                 (u32)(fman->cfg->dma_cam_num_of_entries * DMA_CAM_SIZEOF_ENTRY);
 765         fman->cam_offset = fman_muram_alloc(fman->muram, fman->cam_size);
 766         if (IS_ERR_VALUE(fman->cam_offset)) {
 767                 dev_err(fman->dev, "%s: MURAM alloc for DMA CAM failed\n",
 768                         __func__);
 769                 return -ENOMEM;
 770         }
 771
 772         if (fman->state->rev_info.major == 2) {
 773                 u32 __iomem *cam_base_addr;
 774
 775                 fman_muram_free_mem(fman->muram, fman->cam_offset,
 776                                     fman->cam_size);
 777
 778                 fman->cam_size = fman->cfg->dma_cam_num_of_entries * 72 + 128;
 779                 fman->cam_offset = fman_muram_alloc(fman->muram,
 780                                                     fman->cam_size);
 781                 if (IS_ERR_VALUE(fman->cam_offset)) {
 782                         dev_err(fman->dev, "%s: MURAM alloc for DMA CAM failed\n",
 783                                 __func__);
 784                         return -ENOMEM;
 785                 }
 786
 787                 if (fman->cfg->dma_cam_num_of_entries % 8 ||
 788                     fman->cfg->dma_cam_num_of_entries > 32) {
 789                         dev_err(fman->dev, "%s: wrong dma_cam_num_of_entries\n",
 790                                 __func__);
 791                         return -EINVAL;
 792                 }
 793
 794                 cam_base_addr = (u32 __iomem *)
 795                         fman_muram_offset_to_vbase(fman->muram,
 796                                                    fman->cam_offset);
 797                 iowrite32be(~((1 <<
 798                             (32 - fman->cfg->dma_cam_num_of_entries)) - 1),
 799                             cam_base_addr);
 800         }
 801
 802         fman->cfg->cam_base_addr = fman->cam_offset;
 803
 804         return 0;
 805 }
 806
 807 static void fpm_init(struct fman_fpm_regs __iomem *fpm_rg, struct fman_cfg *cfg)
 808 {
 809         u32 tmp_reg;
 810         int i;
 811
 812         /* Init FPM Registers */
 813
 814         tmp_reg = (u32)(cfg->disp_limit_tsh << FPM_DISP_LIMIT_SHIFT);
 815         iowrite32be(tmp_reg, &fpm_rg->fmfp_mxd);
 816
 817         tmp_reg = (((u32)cfg->prs_disp_tsh << FPM_THR1_PRS_SHIFT) |
 818                    ((u32)cfg->kg_disp_tsh << FPM_THR1_KG_SHIFT) |
 819                    ((u32)cfg->plcr_disp_tsh << FPM_THR1_PLCR_SHIFT) |
 820                    ((u32)cfg->bmi_disp_tsh << FPM_THR1_BMI_SHIFT));
 821         iowrite32be(tmp_reg, &fpm_rg->fmfp_dist1);
 822
 823         tmp_reg =
 824                 (((u32)cfg->qmi_enq_disp_tsh << FPM_THR2_QMI_ENQ_SHIFT) |
 825                  ((u32)cfg->qmi_deq_disp_tsh << FPM_THR2_QMI_DEQ_SHIFT) |
 826                  ((u32)cfg->fm_ctl1_disp_tsh << FPM_THR2_FM_CTL1_SHIFT) |
 827                  ((u32)cfg->fm_ctl2_disp_tsh << FPM_THR2_FM_CTL2_SHIFT));
 828         iowrite32be(tmp_reg, &fpm_rg->fmfp_dist2);
 829
 830         /* define exceptions and error behavior */
 831         tmp_reg = 0;
 832         /* Clear events */
 833         tmp_reg |= (FPM_EV_MASK_STALL | FPM_EV_MASK_DOUBLE_ECC |
 834                     FPM_EV_MASK_SINGLE_ECC);
 835         /* enable interrupts */
 836         if (cfg->exceptions & EX_FPM_STALL_ON_TASKS)
 837                 tmp_reg |= FPM_EV_MASK_STALL_EN;
 838         if (cfg->exceptions & EX_FPM_SINGLE_ECC)
 839                 tmp_reg |= FPM_EV_MASK_SINGLE_ECC_EN;
 840         if (cfg->exceptions & EX_FPM_DOUBLE_ECC)
 841                 tmp_reg |= FPM_EV_MASK_DOUBLE_ECC_EN;
 842         tmp_reg |= (cfg->catastrophic_err << FPM_EV_MASK_CAT_ERR_SHIFT);
 843         tmp_reg |= (cfg->dma_err << FPM_EV_MASK_DMA_ERR_SHIFT);
 844         /* FMan is not halted upon external halt activation */
 845         tmp_reg |= FPM_EV_MASK_EXTERNAL_HALT;
 846         /* Man is not halted upon  Unrecoverable ECC error behavior */
 847         tmp_reg |= FPM_EV_MASK_ECC_ERR_HALT;
 848         iowrite32be(tmp_reg, &fpm_rg->fmfp_ee);
 849
 850         /* clear all fmCtls event registers */
 851         for (i = 0; i < FM_NUM_OF_FMAN_CTRL_EVENT_REGS; i++)
 852                 iowrite32be(0xFFFFFFFF, &fpm_rg->fmfp_cev[i]);
 853
 854         /* RAM ECC -  enable and clear events */
 855         /* first we need to clear all parser memory,
 856          * as it is uninitialized and may cause ECC errors
 857          */
 858         /* event bits */
 859         tmp_reg = (FPM_RAM_MURAM_ECC | FPM_RAM_IRAM_ECC);
 860
 861         iowrite32be(tmp_reg, &fpm_rg->fm_rcr);
 862
 863         tmp_reg = 0;
 864         if (cfg->exceptions & EX_IRAM_ECC) {
 865                 tmp_reg |= FPM_IRAM_ECC_ERR_EX_EN;
 866                 enable_rams_ecc(fpm_rg);
 867         }
 868         if (cfg->exceptions & EX_MURAM_ECC) {
 869                 tmp_reg |= FPM_MURAM_ECC_ERR_EX_EN;
 870                 enable_rams_ecc(fpm_rg);
 871         }
 872         iowrite32be(tmp_reg, &fpm_rg->fm_rie);
 873 }
 874
 875 static void bmi_init(struct fman_bmi_regs __iomem *bmi_rg,
 876                      struct fman_cfg *cfg)
 877 {
 878         u32 tmp_reg;
 879
 880         /* Init BMI Registers */
 881
 882         /* define common resources */
 883         tmp_reg = cfg->fifo_base_addr;
 884         tmp_reg = tmp_reg / BMI_FIFO_ALIGN;
 885
 886         tmp_reg |= ((cfg->total_fifo_size / FMAN_BMI_FIFO_UNITS - 1) <<
 887                     BMI_CFG1_FIFO_SIZE_SHIFT);
 888         iowrite32be(tmp_reg, &bmi_rg->fmbm_cfg1);
 889
 890         tmp_reg = ((cfg->total_num_of_tasks - 1) & BMI_CFG2_TASKS_MASK) <<
 891                    BMI_CFG2_TASKS_SHIFT;
 892         /* num of DMA's will be dynamically updated when each port is set */
 893         iowrite32be(tmp_reg, &bmi_rg->fmbm_cfg2);
 894
 895         /* define unmaskable exceptions, enable and clear events */
 896         tmp_reg = 0;
 897         iowrite32be(BMI_ERR_INTR_EN_LIST_RAM_ECC |
 898                     BMI_ERR_INTR_EN_STORAGE_PROFILE_ECC |
 899                     BMI_ERR_INTR_EN_STATISTICS_RAM_ECC |
 900                     BMI_ERR_INTR_EN_DISPATCH_RAM_ECC, &bmi_rg->fmbm_ievr);
 901
 902         if (cfg->exceptions & EX_BMI_LIST_RAM_ECC)
 903                 tmp_reg |= BMI_ERR_INTR_EN_LIST_RAM_ECC;
 904         if (cfg->exceptions & EX_BMI_STORAGE_PROFILE_ECC)
 905                 tmp_reg |= BMI_ERR_INTR_EN_STORAGE_PROFILE_ECC;
 906         if (cfg->exceptions & EX_BMI_STATISTICS_RAM_ECC)
 907                 tmp_reg |= BMI_ERR_INTR_EN_STATISTICS_RAM_ECC;
 908         if (cfg->exceptions & EX_BMI_DISPATCH_RAM_ECC)
 909                 tmp_reg |= BMI_ERR_INTR_EN_DISPATCH_RAM_ECC;
 910         iowrite32be(tmp_reg, &bmi_rg->fmbm_ier);
 911 }
 912
 913 static void qmi_init(struct fman_qmi_regs __iomem *qmi_rg,
 914                      struct fman_cfg *cfg)
 915 {
 916         u32 tmp_reg;
 917
 918         /* Init QMI Registers */
 919
 920         /* Clear error interrupt events */
 921
 922         iowrite32be(QMI_ERR_INTR_EN_DOUBLE_ECC | QMI_ERR_INTR_EN_DEQ_FROM_DEF,
 923                     &qmi_rg->fmqm_eie);
 924         tmp_reg = 0;
 925         if (cfg->exceptions & EX_QMI_DEQ_FROM_UNKNOWN_PORTID)
 926                 tmp_reg |= QMI_ERR_INTR_EN_DEQ_FROM_DEF;
 927         if (cfg->exceptions & EX_QMI_DOUBLE_ECC)
 928                 tmp_reg |= QMI_ERR_INTR_EN_DOUBLE_ECC;
 929         /* enable events */
 930         iowrite32be(tmp_reg, &qmi_rg->fmqm_eien);
 931
 932         tmp_reg = 0;
 933         /* Clear interrupt events */
 934         iowrite32be(QMI_INTR_EN_SINGLE_ECC, &qmi_rg->fmqm_ie);
 935         if (cfg->exceptions & EX_QMI_SINGLE_ECC)
 936                 tmp_reg |= QMI_INTR_EN_SINGLE_ECC;
 937         /* enable events */
 938         iowrite32be(tmp_reg, &qmi_rg->fmqm_ien);
 939 }
 940
 941 static void hwp_init(struct fman_hwp_regs __iomem *hwp_rg)
 942 {
 943         /* enable HW Parser */
 944         iowrite32be(HWP_RPIMAC_PEN, &hwp_rg->fmprrpimac);
 945 }
 946
 947 static int enable(struct fman *fman, struct fman_cfg *cfg)
 948 {
 949         u32 cfg_reg = 0;
 950
 951         /* Enable all modules */
 952
 953         /* clear&enable global counters - calculate reg and save for later,
 954          * because it's the same reg for QMI enable
 955          */
 956         cfg_reg = QMI_CFG_EN_COUNTERS;
 957
 958         /* Set enqueue and dequeue thresholds */
 959         cfg_reg |= (cfg->qmi_def_tnums_thresh << 8) | cfg->qmi_def_tnums_thresh;
 960
 961         iowrite32be(BMI_INIT_START, &fman->bmi_regs->fmbm_init);
 962         iowrite32be(cfg_reg | QMI_CFG_ENQ_EN | QMI_CFG_DEQ_EN,
 963                     &fman->qmi_regs->fmqm_gc);
 964
 965         return 0;
 966 }
 967
 968 static int set_exception(struct fman *fman,
 969                          enum fman_exceptions exception, bool enable)
 970 {
 971         u32 tmp;
 972
 973         switch (exception) {
 974         case FMAN_EX_DMA_BUS_ERROR:
 975                 tmp = ioread32be(&fman->dma_regs->fmdmmr);
 976                 if (enable)
 977                         tmp |= DMA_MODE_BER;
 978                 else
 979                         tmp &= ~DMA_MODE_BER;
 980                 /* disable bus error */
 981                 iowrite32be(tmp, &fman->dma_regs->fmdmmr);
 982                 break;
 983         case FMAN_EX_DMA_READ_ECC:
 984         case FMAN_EX_DMA_SYSTEM_WRITE_ECC:
 985         case FMAN_EX_DMA_FM_WRITE_ECC:
 986                 tmp = ioread32be(&fman->dma_regs->fmdmmr);
 987                 if (enable)
 988                         tmp |= DMA_MODE_ECC;
 989                 else
 990                         tmp &= ~DMA_MODE_ECC;
 991                 iowrite32be(tmp, &fman->dma_regs->fmdmmr);
 992                 break;
 993         case FMAN_EX_FPM_STALL_ON_TASKS:
 994                 tmp = ioread32be(&fman->fpm_regs->fmfp_ee);
 995                 if (enable)
 996                         tmp |= FPM_EV_MASK_STALL_EN;
 997                 else
 998                         tmp &= ~FPM_EV_MASK_STALL_EN;
 999                 iowrite32be(tmp, &fman->fpm_regs->fmfp_ee);
1000                 break;
1001         case FMAN_EX_FPM_SINGLE_ECC:
1002                 tmp = ioread32be(&fman->fpm_regs->fmfp_ee);
1003                 if (enable)
1004                         tmp |= FPM_EV_MASK_SINGLE_ECC_EN;
1005                 else
1006                         tmp &= ~FPM_EV_MASK_SINGLE_ECC_EN;
1007                 iowrite32be(tmp, &fman->fpm_regs->fmfp_ee);
1008                 break;
1009         case FMAN_EX_FPM_DOUBLE_ECC:
1010                 tmp = ioread32be(&fman->fpm_regs->fmfp_ee);
1011                 if (enable)
1012                         tmp |= FPM_EV_MASK_DOUBLE_ECC_EN;
1013                 else
1014                         tmp &= ~FPM_EV_MASK_DOUBLE_ECC_EN;
1015                 iowrite32be(tmp, &fman->fpm_regs->fmfp_ee);
1016                 break;
1017         case FMAN_EX_QMI_SINGLE_ECC:
1018                 tmp = ioread32be(&fman->qmi_regs->fmqm_ien);
1019                 if (enable)
1020                         tmp |= QMI_INTR_EN_SINGLE_ECC;
1021                 else
1022                         tmp &= ~QMI_INTR_EN_SINGLE_ECC;
1023                 iowrite32be(tmp, &fman->qmi_regs->fmqm_ien);
1024                 break;
1025         case FMAN_EX_QMI_DOUBLE_ECC:
1026                 tmp = ioread32be(&fman->qmi_regs->fmqm_eien);
1027                 if (enable)
1028                         tmp |= QMI_ERR_INTR_EN_DOUBLE_ECC;
1029                 else
1030                         tmp &= ~QMI_ERR_INTR_EN_DOUBLE_ECC;
1031                 iowrite32be(tmp, &fman->qmi_regs->fmqm_eien);
1032                 break;
1033         case FMAN_EX_QMI_DEQ_FROM_UNKNOWN_PORTID:
1034                 tmp = ioread32be(&fman->qmi_regs->fmqm_eien);
1035                 if (enable)
1036                         tmp |= QMI_ERR_INTR_EN_DEQ_FROM_DEF;
1037                 else
1038                         tmp &= ~QMI_ERR_INTR_EN_DEQ_FROM_DEF;
1039                 iowrite32be(tmp, &fman->qmi_regs->fmqm_eien);
1040                 break;
1041         case FMAN_EX_BMI_LIST_RAM_ECC:
1042                 tmp = ioread32be(&fman->bmi_regs->fmbm_ier);
1043                 if (enable)
1044                         tmp |= BMI_ERR_INTR_EN_LIST_RAM_ECC;
1045                 else
1046                         tmp &= ~BMI_ERR_INTR_EN_LIST_RAM_ECC;
1047                 iowrite32be(tmp, &fman->bmi_regs->fmbm_ier);
1048                 break;
1049         case FMAN_EX_BMI_STORAGE_PROFILE_ECC:
1050                 tmp = ioread32be(&fman->bmi_regs->fmbm_ier);
1051                 if (enable)
1052                         tmp |= BMI_ERR_INTR_EN_STORAGE_PROFILE_ECC;
1053                 else
1054                         tmp &= ~BMI_ERR_INTR_EN_STORAGE_PROFILE_ECC;
1055                 iowrite32be(tmp, &fman->bmi_regs->fmbm_ier);
1056                 break;
1057         case FMAN_EX_BMI_STATISTICS_RAM_ECC:
1058                 tmp = ioread32be(&fman->bmi_regs->fmbm_ier);
1059                 if (enable)
1060                         tmp |= BMI_ERR_INTR_EN_STATISTICS_RAM_ECC;
1061                 else
1062                         tmp &= ~BMI_ERR_INTR_EN_STATISTICS_RAM_ECC;
1063                 iowrite32be(tmp, &fman->bmi_regs->fmbm_ier);
1064                 break;
1065         case FMAN_EX_BMI_DISPATCH_RAM_ECC:
1066                 tmp = ioread32be(&fman->bmi_regs->fmbm_ier);
1067                 if (enable)
1068                         tmp |= BMI_ERR_INTR_EN_DISPATCH_RAM_ECC;
1069                 else
1070                         tmp &= ~BMI_ERR_INTR_EN_DISPATCH_RAM_ECC;
1071                 iowrite32be(tmp, &fman->bmi_regs->fmbm_ier);
1072                 break;
1073         case FMAN_EX_IRAM_ECC:
1074                 tmp = ioread32be(&fman->fpm_regs->fm_rie);
1075                 if (enable) {
1076                         /* enable ECC if not enabled */
1077                         enable_rams_ecc(fman->fpm_regs);
1078                         /* enable ECC interrupts */
1079                         tmp |= FPM_IRAM_ECC_ERR_EX_EN;
1080                 } else {
1081                         /* ECC mechanism may be disabled,
1082                          * depending on driver status
1083                          */
1084                         disable_rams_ecc(fman->fpm_regs);
1085                         tmp &= ~FPM_IRAM_ECC_ERR_EX_EN;
1086                 }
1087                 iowrite32be(tmp, &fman->fpm_regs->fm_rie);
1088                 break;
1089         case FMAN_EX_MURAM_ECC:
1090                 tmp = ioread32be(&fman->fpm_regs->fm_rie);
1091                 if (enable) {
1092                         /* enable ECC if not enabled */
1093                         enable_rams_ecc(fman->fpm_regs);
1094                         /* enable ECC interrupts */
1095                         tmp |= FPM_MURAM_ECC_ERR_EX_EN;
1096                 } else {
1097                         /* ECC mechanism may be disabled,
1098                          * depending on driver status
1099                          */
1100                         disable_rams_ecc(fman->fpm_regs);
1101                         tmp &= ~FPM_MURAM_ECC_ERR_EX_EN;
1102                 }
1103                 iowrite32be(tmp, &fman->fpm_regs->fm_rie);
1104                 break;
1105         default:
1106                 return -EINVAL;
1107         }
1108         return 0;
1109 }
1110
1111 static void resume(struct fman_fpm_regs __iomem *fpm_rg)
1112 {
1113         u32 tmp;
1114
1115         tmp = ioread32be(&fpm_rg->fmfp_ee);
1116         /* clear tmp_reg event bits in order not to clear standing events */
1117         tmp &= ~(FPM_EV_MASK_DOUBLE_ECC |
1118                  FPM_EV_MASK_STALL | FPM_EV_MASK_SINGLE_ECC);
1119         tmp |= FPM_EV_MASK_RELEASE_FM;
1120
1121         iowrite32be(tmp, &fpm_rg->fmfp_ee);
1122 }
1123
1124 static int fill_soc_specific_params(struct fman_state_struct *state)
1125 {
1126         u8 minor = state->rev_info.minor;
1127         /* P4080 - Major 2
1128          * P2041/P3041/P5020/P5040 - Major 3
1129          * Tx/Bx - Major 6
1130          */
1131         switch (state->rev_info.major) {
1132         case 3:
1133                 state->bmi_max_fifo_size        = 160 * 1024;
1134                 state->fm_iram_size             = 64 * 1024;
1135                 state->dma_thresh_max_commq     = 31;
1136                 state->dma_thresh_max_buf       = 127;
1137                 state->qmi_max_num_of_tnums     = 64;
1138                 state->qmi_def_tnums_thresh     = 48;
1139                 state->bmi_max_num_of_tasks     = 128;
1140                 state->max_num_of_open_dmas     = 32;
1141                 state->fm_port_num_of_cg        = 256;
1142                 state->num_of_rx_ports  = 6;
1143                 state->total_fifo_size  = 136 * 1024;
1144                 break;
1145
1146         case 2:
1147                 state->bmi_max_fifo_size        = 160 * 1024;
1148                 state->fm_iram_size             = 64 * 1024;
1149                 state->dma_thresh_max_commq     = 31;
1150                 state->dma_thresh_max_buf       = 127;
1151                 state->qmi_max_num_of_tnums     = 64;
1152                 state->qmi_def_tnums_thresh     = 48;
1153                 state->bmi_max_num_of_tasks     = 128;
1154                 state->max_num_of_open_dmas     = 32;
1155                 state->fm_port_num_of_cg        = 256;
1156                 state->num_of_rx_ports  = 5;
1157                 state->total_fifo_size  = 100 * 1024;
1158                 break;
1159
1160         case 6:
1161                 state->dma_thresh_max_commq     = 83;
1162                 state->dma_thresh_max_buf       = 127;
1163                 state->qmi_max_num_of_tnums     = 64;
1164                 state->qmi_def_tnums_thresh     = 32;
1165                 state->fm_port_num_of_cg        = 256;
1166
1167                 /* FManV3L */
1168                 if (minor == 1 || minor == 4) {
1169                         state->bmi_max_fifo_size        = 192 * 1024;
1170                         state->bmi_max_num_of_tasks     = 64;
1171                         state->max_num_of_open_dmas     = 32;
1172                         state->num_of_rx_ports          = 5;
1173                         if (minor == 1)
1174                                 state->fm_iram_size     = 32 * 1024;
1175                         else
1176                                 state->fm_iram_size     = 64 * 1024;
1177                         state->total_fifo_size          = 156 * 1024;
1178                 }
1179                 /* FManV3H */
1180                 else if (minor == 0 || minor == 2 || minor == 3) {
1181                         state->bmi_max_fifo_size        = 384 * 1024;
1182                         state->fm_iram_size             = 64 * 1024;
1183                         state->bmi_max_num_of_tasks     = 128;
1184                         state->max_num_of_open_dmas     = 84;
1185                         state->num_of_rx_ports          = 8;
1186                         state->total_fifo_size          = 295 * 1024;
1187                 } else {
1188                         pr_err("Unsupported FManv3 version\n");
1189                         return -EINVAL;
1190                 }
1191
1192                 break;
1193         default:
1194                 pr_err("Unsupported FMan version\n");
1195                 return -EINVAL;
1196         }
1197
1198         return 0;
1199 }
1200
1201 static bool is_init_done(struct fman_cfg *cfg)
1202 {
1203         /* Checks if FMan driver parameters were initialized */
1204         if (!cfg)
1205                 return true;
1206
1207         return false;
1208 }
1209
1210 static void free_init_resources(struct fman *fman)
1211 {
1212         if (fman->cam_offset)
1213                 fman_muram_free_mem(fman->muram, fman->cam_offset,
1214                                     fman->cam_size);
1215         if (fman->fifo_offset)
1216                 fman_muram_free_mem(fman->muram, fman->fifo_offset,
1217                                     fman->fifo_size);
1218 }
1219
1220 static irqreturn_t bmi_err_event(struct fman *fman)
1221 {
1222         u32 event, mask, force;
1223         struct fman_bmi_regs __iomem *bmi_rg = fman->bmi_regs;
1224         irqreturn_t ret = IRQ_NONE;
1225
1226         event = ioread32be(&bmi_rg->fmbm_ievr);
1227         mask = ioread32be(&bmi_rg->fmbm_ier);
1228         event &= mask;
1229         /* clear the forced events */
1230         force = ioread32be(&bmi_rg->fmbm_ifr);
1231         if (force & event)
1232                 iowrite32be(force & ~event, &bmi_rg->fmbm_ifr);
1233         /* clear the acknowledged events */
1234         iowrite32be(event, &bmi_rg->fmbm_ievr);
1235
1236         if (event & BMI_ERR_INTR_EN_STORAGE_PROFILE_ECC)
1237                 ret = fman->exception_cb(fman, FMAN_EX_BMI_STORAGE_PROFILE_ECC);
1238         if (event & BMI_ERR_INTR_EN_LIST_RAM_ECC)
1239                 ret = fman->exception_cb(fman, FMAN_EX_BMI_LIST_RAM_ECC);
1240         if (event & BMI_ERR_INTR_EN_STATISTICS_RAM_ECC)
1241                 ret = fman->exception_cb(fman, FMAN_EX_BMI_STATISTICS_RAM_ECC);
1242         if (event & BMI_ERR_INTR_EN_DISPATCH_RAM_ECC)
1243                 ret = fman->exception_cb(fman, FMAN_EX_BMI_DISPATCH_RAM_ECC);
1244
1245         return ret;
1246 }
1247
1248 static irqreturn_t qmi_err_event(struct fman *fman)
1249 {
1250         u32 event, mask, force;
1251         struct fman_qmi_regs __iomem *qmi_rg = fman->qmi_regs;
1252         irqreturn_t ret = IRQ_NONE;
1253
1254         event = ioread32be(&qmi_rg->fmqm_eie);
1255         mask = ioread32be(&qmi_rg->fmqm_eien);
1256         event &= mask;
1257
1258         /* clear the forced events */
1259         force = ioread32be(&qmi_rg->fmqm_eif);
1260         if (force & event)
1261                 iowrite32be(force & ~event, &qmi_rg->fmqm_eif);
1262         /* clear the acknowledged events */
1263         iowrite32be(event, &qmi_rg->fmqm_eie);
1264
1265         if (event & QMI_ERR_INTR_EN_DOUBLE_ECC)
1266                 ret = fman->exception_cb(fman, FMAN_EX_QMI_DOUBLE_ECC);
1267         if (event & QMI_ERR_INTR_EN_DEQ_FROM_DEF)
1268                 ret = fman->exception_cb(fman,
1269                                          FMAN_EX_QMI_DEQ_FROM_UNKNOWN_PORTID);
1270
1271         return ret;
1272 }
1273
1274 static irqreturn_t dma_err_event(struct fman *fman)
1275 {
1276         u32 status, mask, com_id;
1277         u8 tnum, port_id, relative_port_id;
1278         u16 liodn;
1279         struct fman_dma_regs __iomem *dma_rg = fman->dma_regs;
1280         irqreturn_t ret = IRQ_NONE;
1281
1282         status = ioread32be(&dma_rg->fmdmsr);
1283         mask = ioread32be(&dma_rg->fmdmmr);
1284
1285         /* clear DMA_STATUS_BUS_ERR if mask has no DMA_MODE_BER */
1286         if ((mask & DMA_MODE_BER) != DMA_MODE_BER)
1287                 status &= ~DMA_STATUS_BUS_ERR;
1288
1289         /* clear relevant bits if mask has no DMA_MODE_ECC */
1290         if ((mask & DMA_MODE_ECC) != DMA_MODE_ECC)
1291                 status &= ~(DMA_STATUS_FM_SPDAT_ECC |
1292                             DMA_STATUS_READ_ECC |
1293                             DMA_STATUS_SYSTEM_WRITE_ECC |
1294                             DMA_STATUS_FM_WRITE_ECC);
1295
1296         /* clear set events */
1297         iowrite32be(status, &dma_rg->fmdmsr);
1298
1299         if (status & DMA_STATUS_BUS_ERR) {
1300                 u64 addr;
1301
1302                 addr = (u64)ioread32be(&dma_rg->fmdmtal);
1303                 addr |= ((u64)(ioread32be(&dma_rg->fmdmtah)) << 32);
1304
1305                 com_id = ioread32be(&dma_rg->fmdmtcid);
1306                 port_id = (u8)(((com_id & DMA_TRANSFER_PORTID_MASK) >>
1307                                DMA_TRANSFER_PORTID_SHIFT));
1308                 relative_port_id =
1309                 hw_port_id_to_sw_port_id(fman->state->rev_info.major, port_id);
1310                 tnum = (u8)((com_id & DMA_TRANSFER_TNUM_MASK) >>
1311                             DMA_TRANSFER_TNUM_SHIFT);
1312                 liodn = (u16)(com_id & DMA_TRANSFER_LIODN_MASK);
1313                 ret = fman->bus_error_cb(fman, relative_port_id, addr, tnum,
1314                                          liodn);
1315         }
1316         if (status & DMA_STATUS_FM_SPDAT_ECC)
1317                 ret = fman->exception_cb(fman, FMAN_EX_DMA_SINGLE_PORT_ECC);
1318         if (status & DMA_STATUS_READ_ECC)
1319                 ret = fman->exception_cb(fman, FMAN_EX_DMA_READ_ECC);
1320         if (status & DMA_STATUS_SYSTEM_WRITE_ECC)
1321                 ret = fman->exception_cb(fman, FMAN_EX_DMA_SYSTEM_WRITE_ECC);
1322         if (status & DMA_STATUS_FM_WRITE_ECC)
1323                 ret = fman->exception_cb(fman, FMAN_EX_DMA_FM_WRITE_ECC);
1324
1325         return ret;
1326 }
1327
1328 static irqreturn_t fpm_err_event(struct fman *fman)
1329 {
1330         u32 event;
1331         struct fman_fpm_regs __iomem *fpm_rg = fman->fpm_regs;
1332         irqreturn_t ret = IRQ_NONE;
1333
1334         event = ioread32be(&fpm_rg->fmfp_ee);
1335         /* clear the all occurred events */
1336         iowrite32be(event, &fpm_rg->fmfp_ee);
1337
1338         if ((event & FPM_EV_MASK_DOUBLE_ECC) &&
1339             (event & FPM_EV_MASK_DOUBLE_ECC_EN))
1340                 ret = fman->exception_cb(fman, FMAN_EX_FPM_DOUBLE_ECC);
1341         if ((event & FPM_EV_MASK_STALL) && (event & FPM_EV_MASK_STALL_EN))
1342                 ret = fman->exception_cb(fman, FMAN_EX_FPM_STALL_ON_TASKS);
1343         if ((event & FPM_EV_MASK_SINGLE_ECC) &&
1344             (event & FPM_EV_MASK_SINGLE_ECC_EN))
1345                 ret = fman->exception_cb(fman, FMAN_EX_FPM_SINGLE_ECC);
1346
1347         return ret;
1348 }
1349
1350 static irqreturn_t muram_err_intr(struct fman *fman)
1351 {
1352         u32 event, mask;
1353         struct fman_fpm_regs __iomem *fpm_rg = fman->fpm_regs;
1354         irqreturn_t ret = IRQ_NONE;
1355
1356         event = ioread32be(&fpm_rg->fm_rcr);
1357         mask = ioread32be(&fpm_rg->fm_rie);
1358
1359         /* clear MURAM event bit (do not clear IRAM event) */
1360         iowrite32be(event & ~FPM_RAM_IRAM_ECC, &fpm_rg->fm_rcr);
1361
1362         if ((mask & FPM_MURAM_ECC_ERR_EX_EN) && (event & FPM_RAM_MURAM_ECC))
1363                 ret = fman->exception_cb(fman, FMAN_EX_MURAM_ECC);
1364
1365         return ret;
1366 }
1367
1368 static irqreturn_t qmi_event(struct fman *fman)
1369 {
1370         u32 event, mask, force;
1371         struct fman_qmi_regs __iomem *qmi_rg = fman->qmi_regs;
1372         irqreturn_t ret = IRQ_NONE;
1373
1374         event = ioread32be(&qmi_rg->fmqm_ie);
1375         mask = ioread32be(&qmi_rg->fmqm_ien);
1376         event &= mask;
1377         /* clear the forced events */
1378         force = ioread32be(&qmi_rg->fmqm_if);
1379         if (force & event)
1380                 iowrite32be(force & ~event, &qmi_rg->fmqm_if);
1381         /* clear the acknowledged events */
1382         iowrite32be(event, &qmi_rg->fmqm_ie);
1383
1384         if (event & QMI_INTR_EN_SINGLE_ECC)
1385                 ret = fman->exception_cb(fman, FMAN_EX_QMI_SINGLE_ECC);
1386
1387         return ret;
1388 }
1389
1390 static void enable_time_stamp(struct fman *fman)
1391 {
1392         struct fman_fpm_regs __iomem *fpm_rg = fman->fpm_regs;
1393         u16 fm_clk_freq = fman->state->fm_clk_freq;
1394         u32 tmp, intgr, ts_freq;
1395         u64 frac;
1396
1397         ts_freq = (u32)(1 << fman->state->count1_micro_bit);
1398         /* configure timestamp so that bit 8 will count 1 microsecond
1399          * Find effective count rate at TIMESTAMP least significant bits:
1400          * Effective_Count_Rate = 1MHz x 2^8 = 256MHz
1401          * Find frequency ratio between effective count rate and the clock:
1402          * Effective_Count_Rate / CLK e.g. for 600 MHz clock:
1403          * 256/600 = 0.4266666...
1404          */
1405
1406         intgr = ts_freq / fm_clk_freq;
1407         /* we multiply by 2^16 to keep the fraction of the division
1408          * we do not div back, since we write this value as a fraction
1409          * see spec
1410          */
1411
1412         frac = ((ts_freq << 16) - (intgr << 16) * fm_clk_freq) / fm_clk_freq;
1413         /* we check remainder of the division in order to round up if not int */
1414         if (((ts_freq << 16) - (intgr << 16) * fm_clk_freq) % fm_clk_freq)
1415                 frac++;
1416
1417         tmp = (intgr << FPM_TS_INT_SHIFT) | (u16)frac;
1418         iowrite32be(tmp, &fpm_rg->fmfp_tsc2);
1419
1420         /* enable timestamp with original clock */
1421         iowrite32be(FPM_TS_CTL_EN, &fpm_rg->fmfp_tsc1);
1422         fman->state->enabled_time_stamp = true;
1423 }
1424
1425 static int clear_iram(struct fman *fman)
1426 {
1427         struct fman_iram_regs __iomem *iram;
1428         int i, count;
1429
1430         iram = fman->base_addr + IMEM_OFFSET;
1431
1432         /* Enable the auto-increment */
1433         iowrite32be(IRAM_IADD_AIE, &iram->iadd);
1434         count = 100;
1435         do {
1436                 udelay(1);
1437         } while ((ioread32be(&iram->iadd) != IRAM_IADD_AIE) && --count);
1438         if (count == 0)
1439                 return -EBUSY;
1440
1441         for (i = 0; i < (fman->state->fm_iram_size / 4); i++)
1442                 iowrite32be(0xffffffff, &iram->idata);
1443
1444         iowrite32be(fman->state->fm_iram_size - 4, &iram->iadd);
1445         count = 100;
1446         do {
1447                 udelay(1);
1448         } while ((ioread32be(&iram->idata) != 0xffffffff) && --count);
1449         if (count == 0)
1450                 return -EBUSY;
1451
1452         return 0;
1453 }
1454
1455 static u32 get_exception_flag(enum fman_exceptions exception)
1456 {
1457         u32 bit_mask;
1458
1459         switch (exception) {
1460         case FMAN_EX_DMA_BUS_ERROR:
1461                 bit_mask = EX_DMA_BUS_ERROR;
1462                 break;
1463         case FMAN_EX_DMA_SINGLE_PORT_ECC:
1464                 bit_mask = EX_DMA_SINGLE_PORT_ECC;
1465                 break;
1466         case FMAN_EX_DMA_READ_ECC:
1467                 bit_mask = EX_DMA_READ_ECC;
1468                 break;
1469         case FMAN_EX_DMA_SYSTEM_WRITE_ECC:
1470                 bit_mask = EX_DMA_SYSTEM_WRITE_ECC;
1471                 break;
1472         case FMAN_EX_DMA_FM_WRITE_ECC:
1473                 bit_mask = EX_DMA_FM_WRITE_ECC;
1474                 break;
1475         case FMAN_EX_FPM_STALL_ON_TASKS:
1476                 bit_mask = EX_FPM_STALL_ON_TASKS;
1477                 break;
1478         case FMAN_EX_FPM_SINGLE_ECC:
1479                 bit_mask = EX_FPM_SINGLE_ECC;
1480                 break;
1481         case FMAN_EX_FPM_DOUBLE_ECC:
1482                 bit_mask = EX_FPM_DOUBLE_ECC;
1483                 break;
1484         case FMAN_EX_QMI_SINGLE_ECC:
1485                 bit_mask = EX_QMI_SINGLE_ECC;
1486                 break;
1487         case FMAN_EX_QMI_DOUBLE_ECC:
1488                 bit_mask = EX_QMI_DOUBLE_ECC;
1489                 break;
1490         case FMAN_EX_QMI_DEQ_FROM_UNKNOWN_PORTID:
1491                 bit_mask = EX_QMI_DEQ_FROM_UNKNOWN_PORTID;
1492                 break;
1493         case FMAN_EX_BMI_LIST_RAM_ECC:
1494                 bit_mask = EX_BMI_LIST_RAM_ECC;
1495                 break;
1496         case FMAN_EX_BMI_STORAGE_PROFILE_ECC:
1497                 bit_mask = EX_BMI_STORAGE_PROFILE_ECC;
1498                 break;
1499         case FMAN_EX_BMI_STATISTICS_RAM_ECC:
1500                 bit_mask = EX_BMI_STATISTICS_RAM_ECC;
1501                 break;
1502         case FMAN_EX_BMI_DISPATCH_RAM_ECC:
1503                 bit_mask = EX_BMI_DISPATCH_RAM_ECC;
1504                 break;
1505         case FMAN_EX_MURAM_ECC:
1506                 bit_mask = EX_MURAM_ECC;
1507                 break;
1508         default:
1509                 bit_mask = 0;
1510                 break;
1511         }
1512
1513         return bit_mask;
1514 }
1515
1516 static int get_module_event(enum fman_event_modules module, u8 mod_id,
1517                             enum fman_intr_type intr_type)
1518 {
1519         int event;
1520
1521         switch (module) {
1522         case FMAN_MOD_MAC:
1523                 if (intr_type == FMAN_INTR_TYPE_ERR)
1524                         event = FMAN_EV_ERR_MAC0 + mod_id;
1525                 else
1526                         event = FMAN_EV_MAC0 + mod_id;
1527                 break;
1528         case FMAN_MOD_FMAN_CTRL:
1529                 if (intr_type == FMAN_INTR_TYPE_ERR)
1530                         event = FMAN_EV_CNT;
1531                 else
1532                         event = (FMAN_EV_FMAN_CTRL_0 + mod_id);
1533                 break;
1534         case FMAN_MOD_DUMMY_LAST:
1535                 event = FMAN_EV_CNT;
1536                 break;
1537         default:
1538                 event = FMAN_EV_CNT;
1539                 break;
1540         }
1541
1542         return event;
1543 }
1544
1545 static int set_size_of_fifo(struct fman *fman, u8 port_id, u32 *size_of_fifo,
1546                             u32 *extra_size_of_fifo)
1547 {
1548         struct fman_bmi_regs __iomem *bmi_rg = fman->bmi_regs;
1549         u32 fifo = *size_of_fifo;
1550         u32 extra_fifo = *extra_size_of_fifo;
1551         u32 tmp;
1552
1553         /* if this is the first time a port requires extra_fifo_pool_size,
1554          * the total extra_fifo_pool_size must be initialized to 1 buffer per
1555          * port
1556          */
1557         if (extra_fifo && !fman->state->extra_fifo_pool_size)
1558                 fman->state->extra_fifo_pool_size =
1559                         fman->state->num_of_rx_ports * FMAN_BMI_FIFO_UNITS;
1560
1561         fman->state->extra_fifo_pool_size =
1562                 max(fman->state->extra_fifo_pool_size, extra_fifo);
1563
1564         /* check that there are enough uncommitted fifo size */
1565         if ((fman->state->accumulated_fifo_size + fifo) >
1566             (fman->state->total_fifo_size -
1567             fman->state->extra_fifo_pool_size)) {
1568                 dev_err(fman->dev, "%s: Requested fifo size and extra size exceed total FIFO size.\n",
1569                         __func__);
1570                 return -EAGAIN;
1571         }
1572
1573         /* Read, modify and write to HW */
1574         tmp = (fifo / FMAN_BMI_FIFO_UNITS - 1) |
1575                ((extra_fifo / FMAN_BMI_FIFO_UNITS) <<
1576                BMI_EXTRA_FIFO_SIZE_SHIFT);
1577         iowrite32be(tmp, &bmi_rg->fmbm_pfs[port_id - 1]);
1578
1579         /* update accumulated */
1580         fman->state->accumulated_fifo_size += fifo;
1581
1582         return 0;
1583 }
1584
1585 static int set_num_of_tasks(struct fman *fman, u8 port_id, u8 *num_of_tasks,
1586                             u8 *num_of_extra_tasks)
1587 {
1588         struct fman_bmi_regs __iomem *bmi_rg = fman->bmi_regs;
1589         u8 tasks = *num_of_tasks;
1590         u8 extra_tasks = *num_of_extra_tasks;
1591         u32 tmp;
1592
1593         if (extra_tasks)
1594                 fman->state->extra_tasks_pool_size =
1595                 max(fman->state->extra_tasks_pool_size, extra_tasks);
1596
1597         /* check that there are enough uncommitted tasks */
1598         if ((fman->state->accumulated_num_of_tasks + tasks) >
1599             (fman->state->total_num_of_tasks -
1600              fman->state->extra_tasks_pool_size)) {
1601                 dev_err(fman->dev, "%s: Requested num_of_tasks and extra tasks pool for fm%d exceed total num_of_tasks.\n",
1602                         __func__, fman->state->fm_id);
1603                 return -EAGAIN;
1604         }
1605         /* update accumulated */
1606         fman->state->accumulated_num_of_tasks += tasks;
1607
1608         /* Write to HW */
1609         tmp = ioread32be(&bmi_rg->fmbm_pp[port_id - 1]) &
1610             ~(BMI_NUM_OF_TASKS_MASK | BMI_NUM_OF_EXTRA_TASKS_MASK);
1611         tmp |= ((u32)((tasks - 1) << BMI_NUM_OF_TASKS_SHIFT) |
1612                 (u32)(extra_tasks << BMI_EXTRA_NUM_OF_TASKS_SHIFT));
1613         iowrite32be(tmp, &bmi_rg->fmbm_pp[port_id - 1]);
1614
1615         return 0;
1616 }
1617
1618 static int set_num_of_open_dmas(struct fman *fman, u8 port_id,
1619                                 u8 *num_of_open_dmas,
1620                                 u8 *num_of_extra_open_dmas)
1621 {
1622         struct fman_bmi_regs __iomem *bmi_rg = fman->bmi_regs;
1623         u8 open_dmas = *num_of_open_dmas;
1624         u8 extra_open_dmas = *num_of_extra_open_dmas;
1625         u8 total_num_dmas = 0, current_val = 0, current_extra_val = 0;
1626         u32 tmp;
1627
1628         if (!open_dmas) {
1629                 /* Configuration according to values in the HW.
1630                  * read the current number of open Dma's
1631                  */
1632                 tmp = ioread32be(&bmi_rg->fmbm_pp[port_id - 1]);
1633                 current_extra_val = (u8)((tmp & BMI_NUM_OF_EXTRA_DMAS_MASK) >>
1634                                          BMI_EXTRA_NUM_OF_DMAS_SHIFT);
1635
1636                 tmp = ioread32be(&bmi_rg->fmbm_pp[port_id - 1]);
1637                 current_val = (u8)(((tmp & BMI_NUM_OF_DMAS_MASK) >>
1638                                    BMI_NUM_OF_DMAS_SHIFT) + 1);
1639
1640                 /* This is the first configuration and user did not
1641                  * specify value (!open_dmas), reset values will be used
1642                  * and we just save these values for resource management
1643                  */
1644                 fman->state->extra_open_dmas_pool_size =
1645                         (u8)max(fman->state->extra_open_dmas_pool_size,
1646                                 current_extra_val);
1647                 fman->state->accumulated_num_of_open_dmas += current_val;
1648                 *num_of_open_dmas = current_val;
1649                 *num_of_extra_open_dmas = current_extra_val;
1650                 return 0;
1651         }
1652
1653         if (extra_open_dmas > current_extra_val)
1654                 fman->state->extra_open_dmas_pool_size =
1655                     (u8)max(fman->state->extra_open_dmas_pool_size,
1656                             extra_open_dmas);
1657
1658         if ((fman->state->rev_info.major < 6) &&
1659             (fman->state->accumulated_num_of_open_dmas - current_val +
1660              open_dmas > fman->state->max_num_of_open_dmas)) {
1661                 dev_err(fman->dev, "%s: Requested num_of_open_dmas for fm%d exceeds total num_of_open_dmas.\n",
1662                         __func__, fman->state->fm_id);
1663                 return -EAGAIN;
1664         } else if ((fman->state->rev_info.major >= 6) &&
1665                    !((fman->state->rev_info.major == 6) &&
1666                    (fman->state->rev_info.minor == 0)) &&
1667                    (fman->state->accumulated_num_of_open_dmas -
1668                    current_val + open_dmas >
1669                    fman->state->dma_thresh_max_commq + 1)) {
1670                 dev_err(fman->dev, "%s: Requested num_of_open_dmas for fm%d exceeds DMA Command queue (%d)\n",
1671                         __func__, fman->state->fm_id,
1672                        fman->state->dma_thresh_max_commq + 1);
1673                 return -EAGAIN;
1674         }
1675
1676         WARN_ON(fman->state->accumulated_num_of_open_dmas < current_val);
1677         /* update acummulated */
1678         fman->state->accumulated_num_of_open_dmas -= current_val;
1679         fman->state->accumulated_num_of_open_dmas += open_dmas;
1680
1681         if (fman->state->rev_info.major < 6)
1682                 total_num_dmas =
1683                     (u8)(fman->state->accumulated_num_of_open_dmas +
1684                     fman->state->extra_open_dmas_pool_size);
1685
1686         /* calculate reg */
1687         tmp = ioread32be(&bmi_rg->fmbm_pp[port_id - 1]) &
1688             ~(BMI_NUM_OF_DMAS_MASK | BMI_NUM_OF_EXTRA_DMAS_MASK);
1689         tmp |= (u32)(((open_dmas - 1) << BMI_NUM_OF_DMAS_SHIFT) |
1690                            (extra_open_dmas << BMI_EXTRA_NUM_OF_DMAS_SHIFT));
1691         iowrite32be(tmp, &bmi_rg->fmbm_pp[port_id - 1]);
1692
1693         /* update total num of DMA's with committed number of open DMAS,
1694          * and max uncommitted pool.
1695          */
1696         if (total_num_dmas) {
1697                 tmp = ioread32be(&bmi_rg->fmbm_cfg2) & ~BMI_CFG2_DMAS_MASK;
1698                 tmp |= (u32)(total_num_dmas - 1) << BMI_CFG2_DMAS_SHIFT;
1699                 iowrite32be(tmp, &bmi_rg->fmbm_cfg2);
1700         }
1701
1702         return 0;
1703 }
1704
1705 static int fman_config(struct fman *fman)
1706 {
1707         void __iomem *base_addr;
1708         int err;
1709
1710         base_addr = fman->dts_params.base_addr;
1711
1712         fman->state = kzalloc(sizeof(*fman->state), GFP_KERNEL);
1713         if (!fman->state)
1714                 goto err_fm_state;
1715
1716         /* Allocate the FM driver's parameters structure */
1717         fman->cfg = kzalloc(sizeof(*fman->cfg), GFP_KERNEL);
1718         if (!fman->cfg)
1719                 goto err_fm_drv;
1720
1721         /* Initialize MURAM block */
1722         fman->muram =
1723                 fman_muram_init(fman->dts_params.muram_res.start,
1724                                 resource_size(&fman->dts_params.muram_res));
1725         if (!fman->muram)
1726                 goto err_fm_soc_specific;
1727
1728         /* Initialize FM parameters which will be kept by the driver */
1729         fman->state->fm_id = fman->dts_params.id;
1730         fman->state->fm_clk_freq = fman->dts_params.clk_freq;
1731         fman->state->qman_channel_base = fman->dts_params.qman_channel_base;
1732         fman->state->num_of_qman_channels =
1733                 fman->dts_params.num_of_qman_channels;
1734         fman->state->res = fman->dts_params.res;
1735         fman->exception_cb = fman_exceptions;
1736         fman->bus_error_cb = fman_bus_error;
1737         fman->fpm_regs = base_addr + FPM_OFFSET;
1738         fman->bmi_regs = base_addr + BMI_OFFSET;
1739         fman->qmi_regs = base_addr + QMI_OFFSET;
1740         fman->dma_regs = base_addr + DMA_OFFSET;
1741         fman->hwp_regs = base_addr + HWP_OFFSET;
1742         fman->kg_regs = base_addr + KG_OFFSET;
1743         fman->base_addr = base_addr;
1744
1745         spin_lock_init(&fman->spinlock);
1746         fman_defconfig(fman->cfg);
1747
1748         fman->state->extra_fifo_pool_size = 0;
1749         fman->state->exceptions = (EX_DMA_BUS_ERROR                 |
1750                                         EX_DMA_READ_ECC              |
1751                                         EX_DMA_SYSTEM_WRITE_ECC      |
1752                                         EX_DMA_FM_WRITE_ECC          |
1753                                         EX_FPM_STALL_ON_TASKS        |
1754                                         EX_FPM_SINGLE_ECC            |
1755                                         EX_FPM_DOUBLE_ECC            |
1756                                         EX_QMI_DEQ_FROM_UNKNOWN_PORTID |
1757                                         EX_BMI_LIST_RAM_ECC          |
1758                                         EX_BMI_STORAGE_PROFILE_ECC   |
1759                                         EX_BMI_STATISTICS_RAM_ECC    |
1760                                         EX_MURAM_ECC                 |
1761                                         EX_BMI_DISPATCH_RAM_ECC      |
1762                                         EX_QMI_DOUBLE_ECC            |
1763                                         EX_QMI_SINGLE_ECC);
1764
1765         /* Read FMan revision for future use*/
1766         fman_get_revision(fman, &fman->state->rev_info);
1767
1768         err = fill_soc_specific_params(fman->state);
1769         if (err)
1770                 goto err_fm_soc_specific;
1771
1772         /* FM_AID_MODE_NO_TNUM_SW005 Errata workaround */
1773         if (fman->state->rev_info.major >= 6)
1774                 fman->cfg->dma_aid_mode = FMAN_DMA_AID_OUT_PORT_ID;
1775
1776         fman->cfg->qmi_def_tnums_thresh = fman->state->qmi_def_tnums_thresh;
1777
1778         fman->state->total_num_of_tasks =
1779         (u8)DFLT_TOTAL_NUM_OF_TASKS(fman->state->rev_info.major,
1780                                     fman->state->rev_info.minor,
1781                                     fman->state->bmi_max_num_of_tasks);
1782
1783         if (fman->state->rev_info.major < 6) {
1784                 fman->cfg->dma_comm_qtsh_clr_emer =
1785                 (u8)DFLT_DMA_COMM_Q_LOW(fman->state->rev_info.major,
1786                                         fman->state->dma_thresh_max_commq);
1787
1788                 fman->cfg->dma_comm_qtsh_asrt_emer =
1789                 (u8)DFLT_DMA_COMM_Q_HIGH(fman->state->rev_info.major,
1790                                          fman->state->dma_thresh_max_commq);
1791
1792                 fman->cfg->dma_cam_num_of_entries =
1793                 DFLT_DMA_CAM_NUM_OF_ENTRIES(fman->state->rev_info.major);
1794
1795                 fman->cfg->dma_read_buf_tsh_clr_emer =
1796                 DFLT_DMA_READ_INT_BUF_LOW(fman->state->dma_thresh_max_buf);
1797
1798                 fman->cfg->dma_read_buf_tsh_asrt_emer =
1799                 DFLT_DMA_READ_INT_BUF_HIGH(fman->state->dma_thresh_max_buf);
1800
1801                 fman->cfg->dma_write_buf_tsh_clr_emer =
1802                 DFLT_DMA_WRITE_INT_BUF_LOW(fman->state->dma_thresh_max_buf);
1803
1804                 fman->cfg->dma_write_buf_tsh_asrt_emer =
1805                 DFLT_DMA_WRITE_INT_BUF_HIGH(fman->state->dma_thresh_max_buf);
1806
1807                 fman->cfg->dma_axi_dbg_num_of_beats =
1808                 DFLT_AXI_DBG_NUM_OF_BEATS;
1809         }
1810
1811         return 0;
1812
1813 err_fm_soc_specific:
1814         kfree(fman->cfg);
1815 err_fm_drv:
1816         kfree(fman->state);
1817 err_fm_state:
1818         kfree(fman);
1819         return -EINVAL;
1820 }
1821
1822 static int fman_reset(struct fman *fman)
1823 {
1824         u32 count;
1825         int err = 0;
1826
1827         if (fman->state->rev_info.major < 6) {
1828                 iowrite32be(FPM_RSTC_FM_RESET, &fman->fpm_regs->fm_rstc);
1829                 /* Wait for reset completion */
1830                 count = 100;
1831                 do {
1832                         udelay(1);
1833                 } while (((ioread32be(&fman->fpm_regs->fm_rstc)) &
1834                          FPM_RSTC_FM_RESET) && --count);
1835                 if (count == 0)
1836                         err = -EBUSY;
1837
1838                 goto _return;
1839         } else {
1840 #ifdef CONFIG_PPC
1841                 struct device_node *guts_node;
1842                 struct ccsr_guts __iomem *guts_regs;
1843                 u32 devdisr2, reg;
1844
1845                 /* Errata A007273 */
1846                 guts_node =
1847                         of_find_compatible_node(NULL, NULL,
1848                                                 "fsl,qoriq-device-config-2.0");
1849                 if (!guts_node) {
1850                         dev_err(fman->dev, "%s: Couldn't find guts node\n",
1851                                 __func__);
1852                         goto guts_node;
1853                 }
1854
1855                 guts_regs = of_iomap(guts_node, 0);
1856                 if (!guts_regs) {
1857                         dev_err(fman->dev, "%s: Couldn't map %pOF regs\n",
1858                                 __func__, guts_node);
1859                         goto guts_regs;
1860                 }
1861 #define FMAN1_ALL_MACS_MASK     0xFCC00000
1862 #define FMAN2_ALL_MACS_MASK     0x000FCC00
1863                 /* Read current state */
1864                 devdisr2 = ioread32be(&guts_regs->devdisr2);
1865                 if (fman->dts_params.id == 0)
1866                         reg = devdisr2 & ~FMAN1_ALL_MACS_MASK;
1867                 else
1868                         reg = devdisr2 & ~FMAN2_ALL_MACS_MASK;
1869
1870                 /* Enable all MACs */
1871                 iowrite32be(reg, &guts_regs->devdisr2);
1872 #endif
1873
1874                 /* Perform FMan reset */
1875                 iowrite32be(FPM_RSTC_FM_RESET, &fman->fpm_regs->fm_rstc);
1876
1877                 /* Wait for reset completion */
1878                 count = 100;
1879                 do {
1880                         udelay(1);
1881                 } while (((ioread32be(&fman->fpm_regs->fm_rstc)) &
1882                          FPM_RSTC_FM_RESET) && --count);
1883                 if (count == 0) {
1884 #ifdef CONFIG_PPC
1885                         iounmap(guts_regs);
1886                         of_node_put(guts_node);
1887 #endif
1888                         err = -EBUSY;
1889                         goto _return;
1890                 }
1891 #ifdef CONFIG_PPC
1892
1893                 /* Restore devdisr2 value */
1894                 iowrite32be(devdisr2, &guts_regs->devdisr2);
1895
1896                 iounmap(guts_regs);
1897                 of_node_put(guts_node);
1898 #endif
1899
1900                 goto _return;
1901
1902 #ifdef CONFIG_PPC
1903 guts_regs:
1904                 of_node_put(guts_node);
1905 guts_node:
1906                 dev_dbg(fman->dev, "%s: Didn't perform FManV3 reset due to Errata A007273!\n",
1907                         __func__);
1908 #endif
1909         }
1910 _return:
1911         return err;
1912 }
1913
1914 static int fman_init(struct fman *fman)
1915 {
1916         struct fman_cfg *cfg = NULL;
1917         int err = 0, i, count;
1918
1919         if (is_init_done(fman->cfg))
1920                 return -EINVAL;
1921
1922         fman->state->count1_micro_bit = FM_TIMESTAMP_1_USEC_BIT;
1923
1924         cfg = fman->cfg;
1925
1926         /* clear revision-dependent non existing exception */
1927         if (fman->state->rev_info.major < 6)
1928                 fman->state->exceptions &= ~FMAN_EX_BMI_DISPATCH_RAM_ECC;
1929
1930         if (fman->state->rev_info.major >= 6)
1931                 fman->state->exceptions &= ~FMAN_EX_QMI_SINGLE_ECC;
1932
1933         /* clear CPG */
1934         memset_io((void __iomem *)(fman->base_addr + CGP_OFFSET), 0,
1935                   fman->state->fm_port_num_of_cg);
1936
1937         /* Save LIODN info before FMan reset
1938          * Skipping non-existent port 0 (i = 1)
1939          */
1940         for (i = 1; i < FMAN_LIODN_TBL; i++) {
1941                 u32 liodn_base;
1942
1943                 fman->liodn_offset[i] =
1944                         ioread32be(&fman->bmi_regs->fmbm_spliodn[i - 1]);
1945                 liodn_base = ioread32be(&fman->dma_regs->fmdmplr[i / 2]);
1946                 if (i % 2) {
1947                         /* FMDM_PLR LSB holds LIODN base for odd ports */
1948                         liodn_base &= DMA_LIODN_BASE_MASK;
1949                 } else {
1950                         /* FMDM_PLR MSB holds LIODN base for even ports */
1951                         liodn_base >>= DMA_LIODN_SHIFT;
1952                         liodn_base &= DMA_LIODN_BASE_MASK;
1953                 }
1954                 fman->liodn_base[i] = liodn_base;
1955         }
1956
1957         err = fman_reset(fman);
1958         if (err)
1959                 return err;
1960
1961         if (ioread32be(&fman->qmi_regs->fmqm_gs) & QMI_GS_HALT_NOT_BUSY) {
1962                 resume(fman->fpm_regs);
1963                 /* Wait until QMI is not in halt not busy state */
1964                 count = 100;
1965                 do {
1966                         udelay(1);
1967                 } while (((ioread32be(&fman->qmi_regs->fmqm_gs)) &
1968                          QMI_GS_HALT_NOT_BUSY) && --count);
1969                 if (count == 0)
1970                         dev_warn(fman->dev, "%s: QMI is in halt not busy state\n",
1971                                  __func__);
1972         }
1973
1974         if (clear_iram(fman) != 0)
1975                 return -EINVAL;
1976
1977         cfg->exceptions = fman->state->exceptions;
1978
1979         /* Init DMA Registers */
1980
1981         err = dma_init(fman);
1982         if (err != 0) {
1983                 free_init_resources(fman);
1984                 return err;
1985         }
1986
1987         /* Init FPM Registers */
1988         fpm_init(fman->fpm_regs, fman->cfg);
1989
1990         /* define common resources */
1991         /* allocate MURAM for FIFO according to total size */
1992         fman->fifo_offset = fman_muram_alloc(fman->muram,
1993                                              fman->state->total_fifo_size);
1994         if (IS_ERR_VALUE(fman->fifo_offset)) {
1995                 free_init_resources(fman);
1996                 dev_err(fman->dev, "%s: MURAM alloc for BMI FIFO failed\n",
1997                         __func__);
1998                 return -ENOMEM;
1999         }
2000
2001         cfg->fifo_base_addr = fman->fifo_offset;
2002         cfg->total_fifo_size = fman->state->total_fifo_size;
2003         cfg->total_num_of_tasks = fman->state->total_num_of_tasks;
2004         cfg->clk_freq = fman->state->fm_clk_freq;
2005
2006         /* Init BMI Registers */
2007         bmi_init(fman->bmi_regs, fman->cfg);
2008
2009         /* Init QMI Registers */
2010         qmi_init(fman->qmi_regs, fman->cfg);
2011
2012         /* Init HW Parser */
2013         hwp_init(fman->hwp_regs);
2014
2015         /* Init KeyGen */
2016         fman->keygen = keygen_init(fman->kg_regs);
2017         if (!fman->keygen)
2018                 return -EINVAL;
2019
2020         err = enable(fman, cfg);
2021         if (err != 0)
2022                 return err;
2023
2024         enable_time_stamp(fman);
2025
2026         kfree(fman->cfg);
2027         fman->cfg = NULL;
2028
2029         return 0;
2030 }
2031
2032 static int fman_set_exception(struct fman *fman,
2033                               enum fman_exceptions exception, bool enable)
2034 {
2035         u32 bit_mask = 0;
2036
2037         if (!is_init_done(fman->cfg))
2038                 return -EINVAL;
2039
2040         bit_mask = get_exception_flag(exception);
2041         if (bit_mask) {
2042                 if (enable)
2043                         fman->state->exceptions |= bit_mask;
2044                 else
2045                         fman->state->exceptions &= ~bit_mask;
2046         } else {
2047                 dev_err(fman->dev, "%s: Undefined exception (%d)\n",
2048                         __func__, exception);
2049                 return -EINVAL;
2050         }
2051
2052         return set_exception(fman, exception, enable);
2053 }
2054
2055 /**
2056  * fman_register_intr
2057  * @fman:       A Pointer to FMan device
2058  * @mod:        Calling module
2059  * @mod_id:     Module id (if more than 1 exists, '0' if not)
2060  * @intr_type:  Interrupt type (error/normal) selection.
2061  * @f_isr:      The interrupt service routine.
2062  * @h_src_arg:  Argument to be passed to f_isr.
2063  *
2064  * Used to register an event handler to be processed by FMan
2065  *
2066  * Return: 0 on success; Error code otherwise.
2067  */
2068 void fman_register_intr(struct fman *fman, enum fman_event_modules module,
2069                         u8 mod_id, enum fman_intr_type intr_type,
2070                         void (*isr_cb)(void *src_arg), void *src_arg)
2071 {
2072         int event = 0;
2073
2074         event = get_module_event(module, mod_id, intr_type);
2075         WARN_ON(event >= FMAN_EV_CNT);
2076
2077         /* register in local FM structure */
2078         fman->intr_mng[event].isr_cb = isr_cb;
2079         fman->intr_mng[event].src_handle = src_arg;
2080 }
2081 EXPORT_SYMBOL(fman_register_intr);
2082
2083 /**
2084  * fman_unregister_intr
2085  * @fman:       A Pointer to FMan device
2086  * @mod:        Calling module
2087  * @mod_id:     Module id (if more than 1 exists, '0' if not)
2088  * @intr_type:  Interrupt type (error/normal) selection.
2089  *
2090  * Used to unregister an event handler to be processed by FMan
2091  *
2092  * Return: 0 on success; Error code otherwise.
2093  */
2094 void fman_unregister_intr(struct fman *fman, enum fman_event_modules module,
2095                           u8 mod_id, enum fman_intr_type intr_type)
2096 {
2097         int event = 0;
2098
2099         event = get_module_event(module, mod_id, intr_type);
2100         WARN_ON(event >= FMAN_EV_CNT);
2101
2102         fman->intr_mng[event].isr_cb = NULL;
2103         fman->intr_mng[event].src_handle = NULL;
2104 }
2105 EXPORT_SYMBOL(fman_unregister_intr);
2106
2107 /**
2108  * fman_set_port_params
2109  * @fman:               A Pointer to FMan device
2110  * @port_params:        Port parameters
2111  *
2112  * Used by FMan Port to pass parameters to the FMan
2113  *
2114  * Return: 0 on success; Error code otherwise.
2115  */
2116 int fman_set_port_params(struct fman *fman,
2117                          struct fman_port_init_params *port_params)
2118 {
2119         int err;
2120         unsigned long flags;
2121         u8 port_id = port_params->port_id, mac_id;
2122
2123         spin_lock_irqsave(&fman->spinlock, flags);
2124
2125         err = set_num_of_tasks(fman, port_params->port_id,
2126                                &port_params->num_of_tasks,
2127                                &port_params->num_of_extra_tasks);
2128         if (err)
2129                 goto return_err;
2130
2131         /* TX Ports */
2132         if (port_params->port_type != FMAN_PORT_TYPE_RX) {
2133                 u32 enq_th, deq_th, reg;
2134
2135                 /* update qmi ENQ/DEQ threshold */
2136                 fman->state->accumulated_num_of_deq_tnums +=
2137                         port_params->deq_pipeline_depth;
2138                 enq_th = (ioread32be(&fman->qmi_regs->fmqm_gc) &
2139                           QMI_CFG_ENQ_MASK) >> QMI_CFG_ENQ_SHIFT;
2140                 /* if enq_th is too big, we reduce it to the max value
2141                  * that is still 0
2142                  */
2143                 if (enq_th >= (fman->state->qmi_max_num_of_tnums -
2144                     fman->state->accumulated_num_of_deq_tnums)) {
2145                         enq_th =
2146                         fman->state->qmi_max_num_of_tnums -
2147                         fman->state->accumulated_num_of_deq_tnums - 1;
2148
2149                         reg = ioread32be(&fman->qmi_regs->fmqm_gc);
2150                         reg &= ~QMI_CFG_ENQ_MASK;
2151                         reg |= (enq_th << QMI_CFG_ENQ_SHIFT);
2152                         iowrite32be(reg, &fman->qmi_regs->fmqm_gc);
2153                 }
2154
2155                 deq_th = ioread32be(&fman->qmi_regs->fmqm_gc) &
2156                                     QMI_CFG_DEQ_MASK;
2157                 /* if deq_th is too small, we enlarge it to the min
2158                  * value that is still 0.
2159                  * depTh may not be larger than 63
2160                  * (fman->state->qmi_max_num_of_tnums-1).
2161                  */
2162                 if ((deq_th <= fman->state->accumulated_num_of_deq_tnums) &&
2163                     (deq_th < fman->state->qmi_max_num_of_tnums - 1)) {
2164                         deq_th = fman->state->accumulated_num_of_deq_tnums + 1;
2165                         reg = ioread32be(&fman->qmi_regs->fmqm_gc);
2166                         reg &= ~QMI_CFG_DEQ_MASK;
2167                         reg |= deq_th;
2168                         iowrite32be(reg, &fman->qmi_regs->fmqm_gc);
2169                 }
2170         }
2171
2172         err = set_size_of_fifo(fman, port_params->port_id,
2173                                &port_params->size_of_fifo,
2174                                &port_params->extra_size_of_fifo);
2175         if (err)
2176                 goto return_err;
2177
2178         err = set_num_of_open_dmas(fman, port_params->port_id,
2179                                    &port_params->num_of_open_dmas,
2180                                    &port_params->num_of_extra_open_dmas);
2181         if (err)
2182                 goto return_err;
2183
2184         set_port_liodn(fman, port_id, fman->liodn_base[port_id],
2185                        fman->liodn_offset[port_id]);
2186
2187         if (fman->state->rev_info.major < 6)
2188                 set_port_order_restoration(fman->fpm_regs, port_id);
2189
2190         mac_id = hw_port_id_to_sw_port_id(fman->state->rev_info.major, port_id);
2191
2192         if (port_params->max_frame_length >= fman->state->mac_mfl[mac_id]) {
2193                 fman->state->port_mfl[mac_id] = port_params->max_frame_length;
2194         } else {
2195                 dev_warn(fman->dev, "%s: Port (%d) max_frame_length is smaller than MAC (%d) current MTU\n",
2196                          __func__, port_id, mac_id);
2197                 err = -EINVAL;
2198                 goto return_err;
2199         }
2200
2201         spin_unlock_irqrestore(&fman->spinlock, flags);
2202
2203         return 0;
2204
2205 return_err:
2206         spin_unlock_irqrestore(&fman->spinlock, flags);
2207         return err;
2208 }
2209 EXPORT_SYMBOL(fman_set_port_params);
2210
2211 /**
2212  * fman_reset_mac
2213  * @fman:       A Pointer to FMan device
2214  * @mac_id:     MAC id to be reset
2215  *
2216  * Reset a specific MAC
2217  *
2218  * Return: 0 on success; Error code otherwise.
2219  */
2220 int fman_reset_mac(struct fman *fman, u8 mac_id)
2221 {
2222         struct fman_fpm_regs __iomem *fpm_rg = fman->fpm_regs;
2223         u32 msk, timeout = 100;
2224
2225         if (fman->state->rev_info.major >= 6) {
2226                 dev_err(fman->dev, "%s: FMan MAC reset no available for FMan V3!\n",
2227                         __func__);
2228                 return -EINVAL;
2229         }
2230
2231         /* Get the relevant bit mask */
2232         switch (mac_id) {
2233         case 0:
2234                 msk = FPM_RSTC_MAC0_RESET;
2235                 break;
2236         case 1:
2237                 msk = FPM_RSTC_MAC1_RESET;
2238                 break;
2239         case 2:
2240                 msk = FPM_RSTC_MAC2_RESET;
2241                 break;
2242         case 3:
2243                 msk = FPM_RSTC_MAC3_RESET;
2244                 break;
2245         case 4:
2246                 msk = FPM_RSTC_MAC4_RESET;
2247                 break;
2248         case 5:
2249                 msk = FPM_RSTC_MAC5_RESET;
2250                 break;
2251         case 6:
2252                 msk = FPM_RSTC_MAC6_RESET;
2253                 break;
2254         case 7:
2255                 msk = FPM_RSTC_MAC7_RESET;
2256                 break;
2257         case 8:
2258                 msk = FPM_RSTC_MAC8_RESET;
2259                 break;
2260         case 9:
2261                 msk = FPM_RSTC_MAC9_RESET;
2262                 break;
2263         default:
2264                 dev_warn(fman->dev, "%s: Illegal MAC Id [%d]\n",
2265                          __func__, mac_id);
2266                 return -EINVAL;
2267         }
2268
2269         /* reset */
2270         iowrite32be(msk, &fpm_rg->fm_rstc);
2271         while ((ioread32be(&fpm_rg->fm_rstc) & msk) && --timeout)
2272                 udelay(10);
2273
2274         if (!timeout)
2275                 return -EIO;
2276
2277         return 0;
2278 }
2279 EXPORT_SYMBOL(fman_reset_mac);
2280
2281 /**
2282  * fman_set_mac_max_frame
2283  * @fman:       A Pointer to FMan device
2284  * @mac_id:     MAC id
2285  * @mfl:        Maximum frame length
2286  *
2287  * Set maximum frame length of specific MAC in FMan driver
2288  *
2289  * Return: 0 on success; Error code otherwise.
2290  */
2291 int fman_set_mac_max_frame(struct fman *fman, u8 mac_id, u16 mfl)
2292 {
2293         /* if port is already initialized, check that MaxFrameLength is smaller
2294          * or equal to the port's max
2295          */
2296         if ((!fman->state->port_mfl[mac_id]) ||
2297             (mfl <= fman->state->port_mfl[mac_id])) {
2298                 fman->state->mac_mfl[mac_id] = mfl;
2299         } else {
2300                 dev_warn(fman->dev, "%s: MAC max_frame_length is larger than Port max_frame_length\n",
2301                          __func__);
2302                 return -EINVAL;
2303         }
2304         return 0;
2305 }
2306 EXPORT_SYMBOL(fman_set_mac_max_frame);
2307
2308 /**
2309  * fman_get_clock_freq
2310  * @fman:       A Pointer to FMan device
2311  *
2312  * Get FMan clock frequency
2313  *
2314  * Return: FMan clock frequency
2315  */
2316 u16 fman_get_clock_freq(struct fman *fman)
2317 {
2318         return fman->state->fm_clk_freq;
2319 }
2320
2321 /**
2322  * fman_get_bmi_max_fifo_size
2323  * @fman:       A Pointer to FMan device
2324  *
2325  * Get FMan maximum FIFO size
2326  *
2327  * Return: FMan Maximum FIFO size
2328  */
2329 u32 fman_get_bmi_max_fifo_size(struct fman *fman)
2330 {
2331         return fman->state->bmi_max_fifo_size;
2332 }
2333 EXPORT_SYMBOL(fman_get_bmi_max_fifo_size);
2334
2335 /**
2336  * fman_get_revision
2337  * @fman                - Pointer to the FMan module
2338  * @rev_info            - A structure of revision information parameters.
2339  *
2340  * Returns the FM revision
2341  *
2342  * Allowed only following fman_init().
2343  *
2344  * Return: 0 on success; Error code otherwise.
2345  */
2346 void fman_get_revision(struct fman *fman, struct fman_rev_info *rev_info)
2347 {
2348         u32 tmp;
2349
2350         tmp = ioread32be(&fman->fpm_regs->fm_ip_rev_1);
2351         rev_info->major = (u8)((tmp & FPM_REV1_MAJOR_MASK) >>
2352                                 FPM_REV1_MAJOR_SHIFT);
2353         rev_info->minor = tmp & FPM_REV1_MINOR_MASK;
2354 }
2355 EXPORT_SYMBOL(fman_get_revision);
2356
2357 /**
2358  * fman_get_qman_channel_id
2359  * @fman:       A Pointer to FMan device
2360  * @port_id:    Port id
2361  *
2362  * Get QMan channel ID associated to the Port id
2363  *
2364  * Return: QMan channel ID
2365  */
2366 u32 fman_get_qman_channel_id(struct fman *fman, u32 port_id)
2367 {
2368         int i;
2369
2370         if (fman->state->rev_info.major >= 6) {
2371                 static const u32 port_ids[] = {
2372                         0x30, 0x31, 0x28, 0x29, 0x2a, 0x2b,
2373                         0x2c, 0x2d, 0x2, 0x3, 0x4, 0x5, 0x7, 0x7
2374                 };
2375
2376                 for (i = 0; i < fman->state->num_of_qman_channels; i++) {
2377                         if (port_ids[i] == port_id)
2378                                 break;
2379                 }
2380         } else {
2381                 static const u32 port_ids[] = {
2382                         0x30, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x1,
2383                         0x2, 0x3, 0x4, 0x5, 0x7, 0x7
2384                 };
2385
2386                 for (i = 0; i < fman->state->num_of_qman_channels; i++) {
2387                         if (port_ids[i] == port_id)
2388                                 break;
2389                 }
2390         }
2391
2392         if (i == fman->state->num_of_qman_channels)
2393                 return 0;
2394
2395         return fman->state->qman_channel_base + i;
2396 }
2397 EXPORT_SYMBOL(fman_get_qman_channel_id);
2398
2399 /**
2400  * fman_get_mem_region
2401  * @fman:       A Pointer to FMan device
2402  *
2403  * Get FMan memory region
2404  *
2405  * Return: A structure with FMan memory region information
2406  */
2407 struct resource *fman_get_mem_region(struct fman *fman)
2408 {
2409         return fman->state->res;
2410 }
2411 EXPORT_SYMBOL(fman_get_mem_region);
2412
2413 /* Bootargs defines */
2414 /* Extra headroom for RX buffers - Default, min and max */
2415 #define FSL_FM_RX_EXTRA_HEADROOM        64
2416 #define FSL_FM_RX_EXTRA_HEADROOM_MIN    16
2417 #define FSL_FM_RX_EXTRA_HEADROOM_MAX    384
2418
2419 /* Maximum frame length */
2420 #define FSL_FM_MAX_FRAME_SIZE                   1522
2421 #define FSL_FM_MAX_POSSIBLE_FRAME_SIZE          9600
2422 #define FSL_FM_MIN_POSSIBLE_FRAME_SIZE          64
2423
2424 /* Extra headroom for Rx buffers.
2425  * FMan is instructed to allocate, on the Rx path, this amount of
2426  * space at the beginning of a data buffer, beside the DPA private
2427  * data area and the IC fields.
2428  * Does not impact Tx buffer layout.
2429  * Configurable from bootargs. 64 by default, it's needed on
2430  * particular forwarding scenarios that add extra headers to the
2431  * forwarded frame.
2432  */
2433 static int fsl_fm_rx_extra_headroom = FSL_FM_RX_EXTRA_HEADROOM;
2434 module_param(fsl_fm_rx_extra_headroom, int, 0);
2435 MODULE_PARM_DESC(fsl_fm_rx_extra_headroom, "Extra headroom for Rx buffers");
2436
2437 /* Max frame size, across all interfaces.
2438  * Configurable from bootargs, to avoid allocating oversized (socket)
2439  * buffers when not using jumbo frames.
2440  * Must be large enough to accommodate the network MTU, but small enough
2441  * to avoid wasting skb memory.
2442  *
2443  * Could be overridden once, at boot-time, via the
2444  * fm_set_max_frm() callback.
2445  */
2446 static int fsl_fm_max_frm = FSL_FM_MAX_FRAME_SIZE;
2447 module_param(fsl_fm_max_frm, int, 0);
2448 MODULE_PARM_DESC(fsl_fm_max_frm, "Maximum frame size, across all interfaces");
2449
2450 /**
2451  * fman_get_max_frm
2452  *
2453  * Return: Max frame length configured in the FM driver
2454  */
2455 u16 fman_get_max_frm(void)
2456 {
2457         static bool fm_check_mfl;
2458
2459         if (!fm_check_mfl) {
2460                 if (fsl_fm_max_frm > FSL_FM_MAX_POSSIBLE_FRAME_SIZE ||
2461                     fsl_fm_max_frm < FSL_FM_MIN_POSSIBLE_FRAME_SIZE) {
2462                         pr_warn("Invalid fsl_fm_max_frm value (%d) in bootargs, valid range is %d-%d. Falling back to the default (%d)\n",
2463                                 fsl_fm_max_frm,
2464                                 FSL_FM_MIN_POSSIBLE_FRAME_SIZE,
2465                                 FSL_FM_MAX_POSSIBLE_FRAME_SIZE,
2466                                 FSL_FM_MAX_FRAME_SIZE);
2467                         fsl_fm_max_frm = FSL_FM_MAX_FRAME_SIZE;
2468                 }
2469                 fm_check_mfl = true;
2470         }
2471
2472         return fsl_fm_max_frm;
2473 }
2474 EXPORT_SYMBOL(fman_get_max_frm);
2475
2476 /**
2477  * fman_get_rx_extra_headroom
2478  *
2479  * Return: Extra headroom size configured in the FM driver
2480  */
2481 int fman_get_rx_extra_headroom(void)
2482 {
2483         static bool fm_check_rx_extra_headroom;
2484
2485         if (!fm_check_rx_extra_headroom) {
2486                 if (fsl_fm_rx_extra_headroom > FSL_FM_RX_EXTRA_HEADROOM_MAX ||
2487                     fsl_fm_rx_extra_headroom < FSL_FM_RX_EXTRA_HEADROOM_MIN) {
2488                         pr_warn("Invalid fsl_fm_rx_extra_headroom value (%d) in bootargs, valid range is %d-%d. Falling back to the default (%d)\n",
2489                                 fsl_fm_rx_extra_headroom,
2490                                 FSL_FM_RX_EXTRA_HEADROOM_MIN,
2491                                 FSL_FM_RX_EXTRA_HEADROOM_MAX,
2492                                 FSL_FM_RX_EXTRA_HEADROOM);
2493                         fsl_fm_rx_extra_headroom = FSL_FM_RX_EXTRA_HEADROOM;
2494                 }
2495
2496                 fm_check_rx_extra_headroom = true;
2497                 fsl_fm_rx_extra_headroom = ALIGN(fsl_fm_rx_extra_headroom, 16);
2498         }
2499
2500         return fsl_fm_rx_extra_headroom;
2501 }
2502 EXPORT_SYMBOL(fman_get_rx_extra_headroom);
2503
2504 /**
2505  * fman_bind
2506  * @dev:        FMan OF device pointer
2507  *
2508  * Bind to a specific FMan device.
2509  *
2510  * Allowed only after the port was created.
2511  *
2512  * Return: A pointer to the FMan device
2513  */
2514 struct fman *fman_bind(struct device *fm_dev)
2515 {
2516         return (struct fman *)(dev_get_drvdata(get_device(fm_dev)));
2517 }
2518 EXPORT_SYMBOL(fman_bind);
2519
2520 static irqreturn_t fman_err_irq(int irq, void *handle)
2521 {
2522         struct fman *fman = (struct fman *)handle;
2523         u32 pending;
2524         struct fman_fpm_regs __iomem *fpm_rg;
2525         irqreturn_t single_ret, ret = IRQ_NONE;
2526
2527         if (!is_init_done(fman->cfg))
2528                 return IRQ_NONE;
2529
2530         fpm_rg = fman->fpm_regs;
2531
2532         /* error interrupts */
2533         pending = ioread32be(&fpm_rg->fm_epi);
2534         if (!pending)
2535                 return IRQ_NONE;
2536
2537         if (pending & ERR_INTR_EN_BMI) {
2538                 single_ret = bmi_err_event(fman);
2539                 if (single_ret == IRQ_HANDLED)
2540                         ret = IRQ_HANDLED;
2541         }
2542         if (pending & ERR_INTR_EN_QMI) {
2543                 single_ret = qmi_err_event(fman);
2544                 if (single_ret == IRQ_HANDLED)
2545                         ret = IRQ_HANDLED;
2546         }
2547         if (pending & ERR_INTR_EN_FPM) {
2548                 single_ret = fpm_err_event(fman);
2549                 if (single_ret == IRQ_HANDLED)
2550                         ret = IRQ_HANDLED;
2551         }
2552         if (pending & ERR_INTR_EN_DMA) {
2553                 single_ret = dma_err_event(fman);
2554                 if (single_ret == IRQ_HANDLED)
2555                         ret = IRQ_HANDLED;
2556         }
2557         if (pending & ERR_INTR_EN_MURAM) {
2558                 single_ret = muram_err_intr(fman);
2559                 if (single_ret == IRQ_HANDLED)
2560                         ret = IRQ_HANDLED;
2561         }
2562
2563         /* MAC error interrupts */
2564         if (pending & ERR_INTR_EN_MAC0) {
2565                 single_ret = call_mac_isr(fman, FMAN_EV_ERR_MAC0 + 0);
2566                 if (single_ret == IRQ_HANDLED)
2567                         ret = IRQ_HANDLED;
2568         }
2569         if (pending & ERR_INTR_EN_MAC1) {
2570                 single_ret = call_mac_isr(fman, FMAN_EV_ERR_MAC0 + 1);
2571                 if (single_ret == IRQ_HANDLED)
2572                         ret = IRQ_HANDLED;
2573         }
2574         if (pending & ERR_INTR_EN_MAC2) {
2575                 single_ret = call_mac_isr(fman, FMAN_EV_ERR_MAC0 + 2);
2576                 if (single_ret == IRQ_HANDLED)
2577                         ret = IRQ_HANDLED;
2578         }
2579         if (pending & ERR_INTR_EN_MAC3) {
2580                 single_ret = call_mac_isr(fman, FMAN_EV_ERR_MAC0 + 3);
2581                 if (single_ret == IRQ_HANDLED)
2582                         ret = IRQ_HANDLED;
2583         }
2584         if (pending & ERR_INTR_EN_MAC4) {
2585                 single_ret = call_mac_isr(fman, FMAN_EV_ERR_MAC0 + 4);
2586                 if (single_ret == IRQ_HANDLED)
2587                         ret = IRQ_HANDLED;
2588         }
2589         if (pending & ERR_INTR_EN_MAC5) {
2590                 single_ret = call_mac_isr(fman, FMAN_EV_ERR_MAC0 + 5);
2591                 if (single_ret == IRQ_HANDLED)
2592                         ret = IRQ_HANDLED;
2593         }
2594         if (pending & ERR_INTR_EN_MAC6) {
2595                 single_ret = call_mac_isr(fman, FMAN_EV_ERR_MAC0 + 6);
2596                 if (single_ret == IRQ_HANDLED)
2597                         ret = IRQ_HANDLED;
2598         }
2599         if (pending & ERR_INTR_EN_MAC7) {
2600                 single_ret = call_mac_isr(fman, FMAN_EV_ERR_MAC0 + 7);
2601                 if (single_ret == IRQ_HANDLED)
2602                         ret = IRQ_HANDLED;
2603         }
2604         if (pending & ERR_INTR_EN_MAC8) {
2605                 single_ret = call_mac_isr(fman, FMAN_EV_ERR_MAC0 + 8);
2606                 if (single_ret == IRQ_HANDLED)
2607                         ret = IRQ_HANDLED;
2608         }
2609         if (pending & ERR_INTR_EN_MAC9) {
2610                 single_ret = call_mac_isr(fman, FMAN_EV_ERR_MAC0 + 9);
2611                 if (single_ret == IRQ_HANDLED)
2612                         ret = IRQ_HANDLED;
2613         }
2614
2615         return ret;
2616 }
2617
2618 static irqreturn_t fman_irq(int irq, void *handle)
2619 {
2620         struct fman *fman = (struct fman *)handle;
2621         u32 pending;
2622         struct fman_fpm_regs __iomem *fpm_rg;
2623         irqreturn_t single_ret, ret = IRQ_NONE;
2624
2625         if (!is_init_done(fman->cfg))
2626                 return IRQ_NONE;
2627
2628         fpm_rg = fman->fpm_regs;
2629
2630         /* normal interrupts */
2631         pending = ioread32be(&fpm_rg->fm_npi);
2632         if (!pending)
2633                 return IRQ_NONE;
2634
2635         if (pending & INTR_EN_QMI) {
2636                 single_ret = qmi_event(fman);
2637                 if (single_ret == IRQ_HANDLED)
2638                         ret = IRQ_HANDLED;
2639         }
2640
2641         /* MAC interrupts */
2642         if (pending & INTR_EN_MAC0) {
2643                 single_ret = call_mac_isr(fman, FMAN_EV_MAC0 + 0);
2644                 if (single_ret == IRQ_HANDLED)
2645                         ret = IRQ_HANDLED;
2646         }
2647         if (pending & INTR_EN_MAC1) {
2648                 single_ret = call_mac_isr(fman, FMAN_EV_MAC0 + 1);
2649                 if (single_ret == IRQ_HANDLED)
2650                         ret = IRQ_HANDLED;
2651         }
2652         if (pending & INTR_EN_MAC2) {
2653                 single_ret = call_mac_isr(fman, FMAN_EV_MAC0 + 2);
2654                 if (single_ret == IRQ_HANDLED)
2655                         ret = IRQ_HANDLED;
2656         }
2657         if (pending & INTR_EN_MAC3) {
2658                 single_ret = call_mac_isr(fman, FMAN_EV_MAC0 + 3);
2659                 if (single_ret == IRQ_HANDLED)
2660                         ret = IRQ_HANDLED;
2661         }
2662         if (pending & INTR_EN_MAC4) {
2663                 single_ret = call_mac_isr(fman, FMAN_EV_MAC0 + 4);
2664                 if (single_ret == IRQ_HANDLED)
2665                         ret = IRQ_HANDLED;
2666         }
2667         if (pending & INTR_EN_MAC5) {
2668                 single_ret = call_mac_isr(fman, FMAN_EV_MAC0 + 5);
2669                 if (single_ret == IRQ_HANDLED)
2670                         ret = IRQ_HANDLED;
2671         }
2672         if (pending & INTR_EN_MAC6) {
2673                 single_ret = call_mac_isr(fman, FMAN_EV_MAC0 + 6);
2674                 if (single_ret == IRQ_HANDLED)
2675                         ret = IRQ_HANDLED;
2676         }
2677         if (pending & INTR_EN_MAC7) {
2678                 single_ret = call_mac_isr(fman, FMAN_EV_MAC0 + 7);
2679                 if (single_ret == IRQ_HANDLED)
2680                         ret = IRQ_HANDLED;
2681         }
2682         if (pending & INTR_EN_MAC8) {
2683                 single_ret = call_mac_isr(fman, FMAN_EV_MAC0 + 8);
2684                 if (single_ret == IRQ_HANDLED)
2685                         ret = IRQ_HANDLED;
2686         }
2687         if (pending & INTR_EN_MAC9) {
2688                 single_ret = call_mac_isr(fman, FMAN_EV_MAC0 + 9);
2689                 if (single_ret == IRQ_HANDLED)
2690                         ret = IRQ_HANDLED;
2691         }
2692
2693         return ret;
2694 }
2695
2696 static const struct of_device_id fman_muram_match[] = {
2697         {
2698                 .compatible = "fsl,fman-muram"},
2699         {}
2700 };
2701 MODULE_DEVICE_TABLE(of, fman_muram_match);
2702
2703 static struct fman *read_dts_node(struct platform_device *of_dev)
2704 {
2705         struct fman *fman;
2706         struct device_node *fm_node, *muram_node;
2707         struct resource *res;
2708         u32 val, range[2];
2709         int err, irq;
2710         struct clk *clk;
2711         u32 clk_rate;
2712         phys_addr_t phys_base_addr;
2713         resource_size_t mem_size;
2714
2715         fman = kzalloc(sizeof(*fman), GFP_KERNEL);
2716         if (!fman)
2717                 return NULL;
2718
2719         fm_node = of_node_get(of_dev->dev.of_node);
2720
2721         err = of_property_read_u32(fm_node, "cell-index", &val);
2722         if (err) {
2723                 dev_err(&of_dev->dev, "%s: failed to read cell-index for %pOF\n",
2724                         __func__, fm_node);
2725                 goto fman_node_put;
2726         }
2727         fman->dts_params.id = (u8)val;
2728
2729         /* Get the FM interrupt */
2730         res = platform_get_resource(of_dev, IORESOURCE_IRQ, 0);
2731         if (!res) {
2732                 dev_err(&of_dev->dev, "%s: Can't get FMan IRQ resource\n",
2733                         __func__);
2734                 goto fman_node_put;
2735         }
2736         irq = res->start;
2737
2738         /* Get the FM error interrupt */
2739         res = platform_get_resource(of_dev, IORESOURCE_IRQ, 1);
2740         if (!res) {
2741                 dev_err(&of_dev->dev, "%s: Can't get FMan Error IRQ resource\n",
2742                         __func__);
2743                 goto fman_node_put;
2744         }
2745         fman->dts_params.err_irq = res->start;
2746
2747         /* Get the FM address */
2748         res = platform_get_resource(of_dev, IORESOURCE_MEM, 0);
2749         if (!res) {
2750                 dev_err(&of_dev->dev, "%s: Can't get FMan memory resource\n",
2751                         __func__);
2752                 goto fman_node_put;
2753         }
2754
2755         phys_base_addr = res->start;
2756         mem_size = resource_size(res);
2757
2758         clk = of_clk_get(fm_node, 0);
2759         if (IS_ERR(clk)) {
2760                 dev_err(&of_dev->dev, "%s: Failed to get FM%d clock structure\n",
2761                         __func__, fman->dts_params.id);
2762                 goto fman_node_put;
2763         }
2764
2765         clk_rate = clk_get_rate(clk);
2766         if (!clk_rate) {
2767                 dev_err(&of_dev->dev, "%s: Failed to determine FM%d clock rate\n",
2768                         __func__, fman->dts_params.id);
2769                 goto fman_node_put;
2770         }
2771         /* Rounding to MHz */
2772         fman->dts_params.clk_freq = DIV_ROUND_UP(clk_rate, 1000000);
2773
2774         err = of_property_read_u32_array(fm_node, "fsl,qman-channel-range",
2775                                          &range[0], 2);
2776         if (err) {
2777                 dev_err(&of_dev->dev, "%s: failed to read fsl,qman-channel-range for %pOF\n",
2778                         __func__, fm_node);
2779                 goto fman_node_put;
2780         }
2781         fman->dts_params.qman_channel_base = range[0];
2782         fman->dts_params.num_of_qman_channels = range[1];
2783
2784         /* Get the MURAM base address and size */
2785         muram_node = of_find_matching_node(fm_node, fman_muram_match);
2786         if (!muram_node) {
2787                 dev_err(&of_dev->dev, "%s: could not find MURAM node\n",
2788                         __func__);
2789                 goto fman_free;
2790         }
2791
2792         err = of_address_to_resource(muram_node, 0,
2793                                      &fman->dts_params.muram_res);
2794         if (err) {
2795                 of_node_put(muram_node);
2796                 dev_err(&of_dev->dev, "%s: of_address_to_resource() = %d\n",
2797                         __func__, err);
2798                 goto fman_free;
2799         }
2800
2801         of_node_put(muram_node);
2802
2803         err = devm_request_irq(&of_dev->dev, irq, fman_irq, IRQF_SHARED,
2804                                "fman", fman);
2805         if (err < 0) {
2806                 dev_err(&of_dev->dev, "%s: irq %d allocation failed (error = %d)\n",
2807                         __func__, irq, err);
2808                 goto fman_free;
2809         }
2810
2811         if (fman->dts_params.err_irq != 0) {
2812                 err = devm_request_irq(&of_dev->dev, fman->dts_params.err_irq,
2813                                        fman_err_irq, IRQF_SHARED,
2814                                        "fman-err", fman);
2815                 if (err < 0) {
2816                         dev_err(&of_dev->dev, "%s: irq %d allocation failed (error = %d)\n",
2817                                 __func__, fman->dts_params.err_irq, err);
2818                         goto fman_free;
2819                 }
2820         }
2821
2822         fman->dts_params.res =
2823                 devm_request_mem_region(&of_dev->dev, phys_base_addr,
2824                                         mem_size, "fman");
2825         if (!fman->dts_params.res) {
2826                 dev_err(&of_dev->dev, "%s: request_mem_region() failed\n",
2827                         __func__);
2828                 goto fman_free;
2829         }
2830
2831         fman->dts_params.base_addr =
2832                 devm_ioremap(&of_dev->dev, phys_base_addr, mem_size);
2833         if (!fman->dts_params.base_addr) {
2834                 dev_err(&of_dev->dev, "%s: devm_ioremap() failed\n", __func__);
2835                 goto fman_free;
2836         }
2837
2838         fman->dev = &of_dev->dev;
2839
2840         err = of_platform_populate(fm_node, NULL, NULL, &of_dev->dev);
2841         if (err) {
2842                 dev_err(&of_dev->dev, "%s: of_platform_populate() failed\n",
2843                         __func__);
2844                 goto fman_free;
2845         }
2846
2847         return fman;
2848
2849 fman_node_put:
2850         of_node_put(fm_node);
2851 fman_free:
2852         kfree(fman);
2853         return NULL;
2854 }
2855
2856 static int fman_probe(struct platform_device *of_dev)
2857 {
2858         struct fman *fman;
2859         struct device *dev;
2860         int err;
2861
2862         dev = &of_dev->dev;
2863
2864         fman = read_dts_node(of_dev);
2865         if (!fman)
2866                 return -EIO;
2867
2868         err = fman_config(fman);
2869         if (err) {
2870                 dev_err(dev, "%s: FMan config failed\n", __func__);
2871                 return -EINVAL;
2872         }
2873
2874         if (fman_init(fman) != 0) {
2875                 dev_err(dev, "%s: FMan init failed\n", __func__);
2876                 return -EINVAL;
2877         }
2878
2879         if (fman->dts_params.err_irq == 0) {
2880                 fman_set_exception(fman, FMAN_EX_DMA_BUS_ERROR, false);
2881                 fman_set_exception(fman, FMAN_EX_DMA_READ_ECC, false);
2882                 fman_set_exception(fman, FMAN_EX_DMA_SYSTEM_WRITE_ECC, false);
2883                 fman_set_exception(fman, FMAN_EX_DMA_FM_WRITE_ECC, false);
2884                 fman_set_exception(fman, FMAN_EX_DMA_SINGLE_PORT_ECC, false);
2885                 fman_set_exception(fman, FMAN_EX_FPM_STALL_ON_TASKS, false);
2886                 fman_set_exception(fman, FMAN_EX_FPM_SINGLE_ECC, false);
2887                 fman_set_exception(fman, FMAN_EX_FPM_DOUBLE_ECC, false);
2888                 fman_set_exception(fman, FMAN_EX_QMI_SINGLE_ECC, false);
2889                 fman_set_exception(fman, FMAN_EX_QMI_DOUBLE_ECC, false);
2890                 fman_set_exception(fman,
2891                                    FMAN_EX_QMI_DEQ_FROM_UNKNOWN_PORTID, false);
2892                 fman_set_exception(fman, FMAN_EX_BMI_LIST_RAM_ECC, false);
2893                 fman_set_exception(fman, FMAN_EX_BMI_STORAGE_PROFILE_ECC,
2894                                    false);
2895                 fman_set_exception(fman, FMAN_EX_BMI_STATISTICS_RAM_ECC, false);
2896                 fman_set_exception(fman, FMAN_EX_BMI_DISPATCH_RAM_ECC, false);
2897         }
2898
2899         dev_set_drvdata(dev, fman);
2900
2901         dev_dbg(dev, "FMan%d probed\n", fman->dts_params.id);
2902
2903         return 0;
2904 }
2905
2906 static const struct of_device_id fman_match[] = {
2907         {
2908                 .compatible = "fsl,fman"},
2909         {}
2910 };
2911
2912 MODULE_DEVICE_TABLE(of, fman_match);
2913
2914 static struct platform_driver fman_driver = {
2915         .driver = {
2916                 .name = "fsl-fman",
2917                 .of_match_table = fman_match,
2918         },
2919         .probe = fman_probe,
2920 };
2921
2922 static int __init fman_load(void)
2923 {
2924         int err;
2925
2926         pr_debug("FSL DPAA FMan driver\n");
2927
2928         err = platform_driver_register(&fman_driver);
2929         if (err < 0)
2930                 pr_err("Error, platform_driver_register() = %d\n", err);
2931
2932         return err;
2933 }
2934 module_init(fman_load);
2935
2936 static void __exit fman_unload(void)
2937 {
2938         platform_driver_unregister(&fman_driver);
2939 }
2940 module_exit(fman_unload);
2941
2942 MODULE_LICENSE("Dual BSD/GPL");
2943 MODULE_DESCRIPTION("Freescale DPAA Frame Manager driver");