1 /*************************************************************************** 2 * Copyright (c) 2005-2009, Broadcom Corporation. 3 * 4 * Name: crystalhd_misc . h 5 * 6 * Description: 7 * BCM70012 Linux driver general purpose routines. 8 * Includes reg/mem read and write routines. 9 * 10 * HISTORY: 11 * 12 ********************************************************************** 13 * This file is part of the crystalhd device driver. 14 * 15 * This driver is free software; you can redistribute it and/or modify 16 * it under the terms of the GNU General Public License as published by 17 * the Free Software Foundation, version 2 of the License. 18 * 19 * This driver is distributed in the hope that it will be useful, 20 * but WITHOUT ANY WARRANTY; without even the implied warranty of 21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 22 * GNU General Public License for more details. 23 * 24 * You should have received a copy of the GNU General Public License 25 * along with this driver. If not, see <http://www.gnu.org/licenses/>. 26 **********************************************************************/ 27 28 #ifndef _CRYSTALHD_MISC_H_ 29 #define _CRYSTALHD_MISC_H_ 30 31 #include <linux/module.h> 32 #include <linux/kernel.h> 33 #include <linux/errno.h> 34 #include <linux/string.h> 35 #include <linux/ioctl.h> 36 #include <linux/dma-mapping.h> 37 #include <linux/sched.h> 38 #include <asm/system.h> 39 #include "bc_dts_glob_lnx.h" 40 41 /* Global log level variable defined in crystal_misc.c file */ 42 extern uint32_t g_linklog_level; 43 44 /* Global element pool for all Queue management. 45 * TX: Active = BC_TX_LIST_CNT, Free = BC_TX_LIST_CNT. 46 * RX: Free = BC_RX_LIST_CNT, Active = 2 47 * FW-CMD: 4 48 */ 49 #define BC_LINK_ELEM_POOL_SZ ((BC_TX_LIST_CNT * 2) + BC_RX_LIST_CNT + 2 + 4) 50 51 /* Driver's IODATA pool count */ 52 #define CHD_IODATA_POOL_SZ (BC_IOCTL_DATA_POOL_SIZE * BC_LINK_MAX_OPENS) 53 54 /* Scatter Gather memory pool size for Tx and Rx */ 55 #define BC_LINK_SG_POOL_SZ (BC_TX_LIST_CNT + BC_RX_LIST_CNT) 56 57 enum crystalhd_dio_sig { 58 crystalhd_dio_inv = 0, 59 crystalhd_dio_locked, 60 crystalhd_dio_sg_mapped, 61 }; 62 63 struct crystalhd_dio_user_info { 64 void *xfr_buff; 65 uint32_t xfr_len; 66 uint32_t uv_offset; 67 bool dir_tx; 68 69 uint32_t uv_sg_ix; 70 uint32_t uv_sg_off; 71 int comp_sts; 72 int ev_sts; 73 uint32_t y_done_sz; 74 uint32_t uv_done_sz; 75 uint32_t comp_flags; 76 bool b422mode; 77 }; 78 79 struct crystalhd_dio_req { 80 uint32_t sig; 81 uint32_t max_pages; 82 struct page **pages; 83 struct scatterlist *sg; 84 int sg_cnt; 85 int page_cnt; 86 int direction; 87 struct crystalhd_dio_user_info uinfo; 88 void *fb_va; 89 uint32_t fb_size; 90 dma_addr_t fb_pa; 91 struct crystalhd_dio_req *next; 92 }; 93 94 #define BC_LINK_DIOQ_SIG (0x09223280) 95 96 struct crystalhd_elem { 97 struct crystalhd_elem *flink; 98 struct crystalhd_elem *blink; 99 void *data; 100 uint32_t tag; 101 }; 102 103 typedef void (*crystalhd_data_free_cb)(void *context, void *data); 104 105 struct crystalhd_dioq { 106 uint32_t sig; 107 struct crystalhd_adp *adp; 108 struct crystalhd_elem *head; 109 struct crystalhd_elem *tail; 110 uint32_t count; 111 spinlock_t lock; 112 wait_queue_head_t event; 113 crystalhd_data_free_cb data_rel_cb; 114 void *cb_context; 115 }; 116 117 typedef void (*hw_comp_callback)(struct crystalhd_dio_req *, 118 wait_queue_head_t *event, enum BC_STATUS sts); 119 120 /*========= Decoder (7412) register access routines.================= */ 121 uint32_t bc_dec_reg_rd(struct crystalhd_adp *, uint32_t); 122 void bc_dec_reg_wr(struct crystalhd_adp *, uint32_t, uint32_t); 123 124 /*========= Link (70012) register access routines.. =================*/ 125 uint32_t crystalhd_reg_rd(struct crystalhd_adp *, uint32_t); 126 void crystalhd_reg_wr(struct crystalhd_adp *, uint32_t, uint32_t); 127 128 /*========= Decoder (7412) memory access routines..=================*/ 129 enum BC_STATUS crystalhd_mem_rd(struct crystalhd_adp *, uint32_t, uint32_t, uint32_t *); 130 enum BC_STATUS crystalhd_mem_wr(struct crystalhd_adp *, uint32_t, uint32_t, uint32_t *); 131 132 /*==========Link (70012) PCIe Config access routines.================*/ 133 enum BC_STATUS crystalhd_pci_cfg_rd(struct crystalhd_adp *, uint32_t, uint32_t, uint32_t *); 134 enum BC_STATUS crystalhd_pci_cfg_wr(struct crystalhd_adp *, uint32_t, uint32_t, uint32_t); 135 136 /*========= Linux Kernel Interface routines. ======================= */ 137 void *bc_kern_dma_alloc(struct crystalhd_adp *, uint32_t, dma_addr_t *); 138 void bc_kern_dma_free(struct crystalhd_adp *, uint32_t, 139 void *, dma_addr_t); 140 #define crystalhd_create_event(_ev) init_waitqueue_head(_ev) 141 #define crystalhd_set_event(_ev) wake_up_interruptible(_ev) 142 #define crystalhd_wait_on_event(ev, condition, timeout, ret, nosig) \ 143 do { \ 144 DECLARE_WAITQUEUE(entry, current); \ 145 unsigned long end = jiffies + ((timeout * HZ) / 1000); \ 146 ret = 0; \ 147 add_wait_queue(ev, &entry); \ 148 for (;;) { \ 149 __set_current_state(TASK_INTERRUPTIBLE); \ 150 if (condition) { \ 151 break; \ 152 } \ 153 if (time_after_eq(jiffies, end)) { \ 154 ret = -EBUSY; \ 155 break; \ 156 } \ 157 schedule_timeout((HZ / 100 > 1) ? HZ / 100 : 1); \ 158 if (!nosig && signal_pending(current)) { \ 159 ret = -EINTR; \ 160 break; \ 161 } \ 162 } \ 163 __set_current_state(TASK_RUNNING); \ 164 remove_wait_queue(ev, &entry); \ 165 } while (0) 166 167 /*================ Direct IO mapping routines ==================*/ 168 extern int crystalhd_create_dio_pool(struct crystalhd_adp *, uint32_t); 169 extern void crystalhd_destroy_dio_pool(struct crystalhd_adp *); 170 extern enum BC_STATUS crystalhd_map_dio(struct crystalhd_adp *, void *, uint32_t, 171 uint32_t, bool, bool, struct crystalhd_dio_req**); 172 173 extern enum BC_STATUS crystalhd_unmap_dio(struct crystalhd_adp *, struct crystalhd_dio_req*); 174 #define crystalhd_get_sgle_paddr(_dio, _ix) (cpu_to_le64(sg_dma_address(&_dio->sg[_ix]))) 175 #define crystalhd_get_sgle_len(_dio, _ix) (cpu_to_le32(sg_dma_len(&_dio->sg[_ix]))) 176 177 /*================ General Purpose Queues ==================*/ 178 extern enum BC_STATUS crystalhd_create_dioq(struct crystalhd_adp *, struct crystalhd_dioq **, crystalhd_data_free_cb , void *); 179 extern void crystalhd_delete_dioq(struct crystalhd_adp *, struct crystalhd_dioq *); 180 extern enum BC_STATUS crystalhd_dioq_add(struct crystalhd_dioq *ioq, void *data, bool wake, uint32_t tag); 181 extern void *crystalhd_dioq_fetch(struct crystalhd_dioq *ioq); 182 extern void *crystalhd_dioq_find_and_fetch(struct crystalhd_dioq *ioq, uint32_t tag); 183 extern void *crystalhd_dioq_fetch_wait(struct crystalhd_dioq *ioq, uint32_t to_secs, uint32_t *sig_pend); 184 185 #define crystalhd_dioq_count(_ioq) ((_ioq) ? _ioq->count : 0) 186 187 extern int crystalhd_create_elem_pool(struct crystalhd_adp *, uint32_t); 188 extern void crystalhd_delete_elem_pool(struct crystalhd_adp *); 189 190 191 /*================ Debug routines/macros .. ================================*/ 192 extern void crystalhd_show_buffer(uint32_t off, uint8_t *buff, uint32_t dwcount); 193 194 enum _chd_log_levels { 195 BCMLOG_ERROR = 0x80000000, /* Don't disable this option */ 196 BCMLOG_DATA = 0x40000000, /* Data, enable by default */ 197 BCMLOG_SPINLOCK = 0x20000000, /* Spcial case for Spin locks*/ 198 199 /* Following are allowed only in debug mode */ 200 BCMLOG_INFO = 0x00000001, /* Generic informational */ 201 BCMLOG_DBG = 0x00000002, /* First level Debug info */ 202 BCMLOG_SSTEP = 0x00000004, /* Stepping information */ 203 BCMLOG_ENTER_LEAVE = 0x00000008, /* stack tracking */ 204 }; 205 206 #define BCMLOG_ENTER \ 207 if (g_linklog_level & BCMLOG_ENTER_LEAVE) { \ 208 printk("Entered %s\n", __func__); \ 209 } 210 211 #define BCMLOG_LEAVE \ 212 if (g_linklog_level & BCMLOG_ENTER_LEAVE) { \ 213 printk("Leaving %s\n", __func__); \ 214 } 215 216 #define BCMLOG(trace, fmt, args...) \ 217 if (g_linklog_level & trace) { \ 218 printk(fmt, ##args); \ 219 } 220 221 #define BCMLOG_ERR(fmt, args...) \ 222 do { \ 223 if (g_linklog_level & BCMLOG_ERROR) { \ 224 printk("*ERR*:%s:%d: "fmt, __FILE__, __LINE__, ##args); \ 225 } \ 226 } while (0); 227 228 #endif 229