1 /* 2 * Tegra host1x Job 3 * 4 * Copyright (c) 2011-2013, NVIDIA Corporation. 5 * 6 * This program is free software; you can redistribute it and/or modify it 7 * under the terms and conditions of the GNU General Public License, 8 * version 2, as published by the Free Software Foundation. 9 * 10 * This program is distributed in the hope it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 13 * more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program. If not, see <http://www.gnu.org/licenses/>. 17 */ 18 19 #ifndef __HOST1X_JOB_H 20 #define __HOST1X_JOB_H 21 22 struct host1x_job_gather { 23 u32 words; 24 dma_addr_t base; 25 struct host1x_bo *bo; 26 int offset; 27 bool handled; 28 }; 29 30 struct host1x_cmdbuf { 31 u32 handle; 32 u32 offset; 33 u32 words; 34 u32 pad; 35 }; 36 37 struct host1x_reloc { 38 struct host1x_bo *cmdbuf; 39 u32 cmdbuf_offset; 40 struct host1x_bo *target; 41 u32 target_offset; 42 u32 shift; 43 u32 pad; 44 }; 45 46 struct host1x_waitchk { 47 struct host1x_bo *bo; 48 u32 offset; 49 u32 syncpt_id; 50 u32 thresh; 51 }; 52 53 struct host1x_job_unpin_data { 54 struct host1x_bo *bo; 55 struct sg_table *sgt; 56 }; 57 58 /* 59 * Each submit is tracked as a host1x_job. 60 */ 61 struct host1x_job { 62 /* When refcount goes to zero, job can be freed */ 63 struct kref ref; 64 65 /* List entry */ 66 struct list_head list; 67 68 /* Channel where job is submitted to */ 69 struct host1x_channel *channel; 70 71 u32 client; 72 73 /* Gathers and their memory */ 74 struct host1x_job_gather *gathers; 75 unsigned int num_gathers; 76 77 /* Wait checks to be processed at submit time */ 78 struct host1x_waitchk *waitchk; 79 unsigned int num_waitchk; 80 u32 waitchk_mask; 81 82 /* Array of handles to be pinned & unpinned */ 83 struct host1x_reloc *relocarray; 84 unsigned int num_relocs; 85 struct host1x_job_unpin_data *unpins; 86 unsigned int num_unpins; 87 88 dma_addr_t *addr_phys; 89 dma_addr_t *gather_addr_phys; 90 dma_addr_t *reloc_addr_phys; 91 92 /* Sync point id, number of increments and end related to the submit */ 93 u32 syncpt_id; 94 u32 syncpt_incrs; 95 u32 syncpt_end; 96 97 /* Maximum time to wait for this job */ 98 unsigned int timeout; 99 100 /* Index and number of slots used in the push buffer */ 101 unsigned int first_get; 102 unsigned int num_slots; 103 104 /* Copy of gathers */ 105 size_t gather_copy_size; 106 dma_addr_t gather_copy; 107 u8 *gather_copy_mapped; 108 109 /* Check if register is marked as an address reg */ 110 int (*is_addr_reg)(struct device *dev, u32 reg, u32 class); 111 112 /* Request a SETCLASS to this class */ 113 u32 class; 114 115 /* Add a channel wait for previous ops to complete */ 116 bool serialize; 117 }; 118 /* 119 * Allocate memory for a job. Just enough memory will be allocated to 120 * accomodate the submit. 121 */ 122 struct host1x_job *host1x_job_alloc(struct host1x_channel *ch, 123 u32 num_cmdbufs, u32 num_relocs, 124 u32 num_waitchks); 125 126 /* 127 * Add a gather to a job. 128 */ 129 void host1x_job_add_gather(struct host1x_job *job, struct host1x_bo *mem_id, 130 u32 words, u32 offset); 131 132 /* 133 * Increment reference going to host1x_job. 134 */ 135 struct host1x_job *host1x_job_get(struct host1x_job *job); 136 137 /* 138 * Decrement reference job, free if goes to zero. 139 */ 140 void host1x_job_put(struct host1x_job *job); 141 142 /* 143 * Pin memory related to job. This handles relocation of addresses to the 144 * host1x address space. Handles both the gather memory and any other memory 145 * referred to from the gather buffers. 146 * 147 * Handles also patching out host waits that would wait for an expired sync 148 * point value. 149 */ 150 int host1x_job_pin(struct host1x_job *job, struct device *dev); 151 152 /* 153 * Unpin memory related to job. 154 */ 155 void host1x_job_unpin(struct host1x_job *job); 156 157 /* 158 * Dump contents of job to debug output. 159 */ 160 void host1x_job_dump(struct device *dev, struct host1x_job *job); 161 162 #endif 163