Meng Wang | 688a867 | 2019-01-29 13:43:33 +0800 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0-only |
Meng Wang | 61af684 | 2018-09-10 17:47:55 +0800 | [diff] [blame] | 2 | /* |
Aditya Bavanari | 23513e0 | 2019-02-28 11:06:41 +0530 | [diff] [blame] | 3 | * Copyright (c) 2017-2019, The Linux Foundation. All rights reserved. |
Vignesh Kulothungan | 5c10992 | 2018-01-24 17:36:18 -0800 | [diff] [blame] | 4 | */ |
| 5 | |
| 6 | #include <dsp/q6common.h> |
| 7 | |
| 8 | struct q6common_ctl { |
| 9 | bool instance_id_supported; |
| 10 | }; |
| 11 | |
| 12 | static struct q6common_ctl common; |
| 13 | |
| 14 | /** |
| 15 | * q6common_update_instance_id_support |
| 16 | * |
| 17 | * Update instance ID support flag to true/false |
| 18 | * |
| 19 | * @supported: enable/disable for instance ID support |
| 20 | */ |
| 21 | void q6common_update_instance_id_support(bool supported) |
| 22 | { |
| 23 | common.instance_id_supported = supported; |
| 24 | } |
| 25 | EXPORT_SYMBOL(q6common_update_instance_id_support); |
| 26 | |
| 27 | /** |
| 28 | * q6common_is_instance_id_supported |
| 29 | * |
| 30 | * Returns true/false for instance ID support |
| 31 | */ |
| 32 | bool q6common_is_instance_id_supported(void) |
| 33 | { |
| 34 | return common.instance_id_supported; |
| 35 | } |
| 36 | EXPORT_SYMBOL(q6common_is_instance_id_supported); |
Vignesh Kulothungan | 13d0d35 | 2018-01-24 17:43:25 -0800 | [diff] [blame] | 37 | |
| 38 | /** |
| 39 | * q6common_pack_pp_params |
| 40 | * |
| 41 | * Populate params header based on instance ID support and pack |
| 42 | * it with payload. |
| 43 | * Instance ID support - |
| 44 | * yes - param_hdr_v3 + payload |
| 45 | * no - param_hdr_v1 + payload |
| 46 | * |
| 47 | * @dest: destination data pointer to be packed into |
| 48 | * @v3_hdr: param header v3 |
| 49 | * @param_data: param payload |
| 50 | * @total_size: total size of packed data (hdr + payload) |
| 51 | * |
| 52 | * Returns 0 on success or error on failure |
| 53 | */ |
| 54 | int q6common_pack_pp_params(u8 *dest, struct param_hdr_v3 *v3_hdr, |
| 55 | u8 *param_data, u32 *total_size) |
| 56 | { |
| 57 | struct param_hdr_v1 *v1_hdr = NULL; |
| 58 | u32 packed_size = 0; |
| 59 | u32 param_size = 0; |
| 60 | bool iid_supported = q6common_is_instance_id_supported(); |
| 61 | |
| 62 | if (dest == NULL) { |
| 63 | pr_err("%s: Received NULL pointer for destination\n", __func__); |
| 64 | return -EINVAL; |
| 65 | } else if (v3_hdr == NULL) { |
| 66 | pr_err("%s: Received NULL pointer for header\n", __func__); |
| 67 | return -EINVAL; |
| 68 | } else if (total_size == NULL) { |
| 69 | pr_err("%s: Received NULL pointer for total size\n", __func__); |
| 70 | return -EINVAL; |
| 71 | } |
| 72 | |
| 73 | param_size = v3_hdr->param_size; |
| 74 | packed_size = iid_supported ? sizeof(struct param_hdr_v3) : |
| 75 | sizeof(struct param_hdr_v1); |
| 76 | |
| 77 | if (iid_supported) { |
| 78 | memcpy(dest, v3_hdr, packed_size); |
| 79 | } else { |
| 80 | v1_hdr = (struct param_hdr_v1 *) dest; |
| 81 | v1_hdr->module_id = v3_hdr->module_id; |
| 82 | v1_hdr->param_id = v3_hdr->param_id; |
| 83 | |
| 84 | if (param_size > U16_MAX) { |
| 85 | pr_err("%s: Invalid param size for V1 %d\n", __func__, |
| 86 | param_size); |
| 87 | return -EINVAL; |
| 88 | } |
| 89 | v1_hdr->param_size = param_size; |
| 90 | v1_hdr->reserved = 0; |
| 91 | } |
| 92 | |
| 93 | /* |
| 94 | * Make param_data optional for cases when there is no data |
| 95 | * present as in some set cases and all get cases. |
| 96 | */ |
| 97 | if (param_data != NULL) { |
| 98 | memcpy(dest + packed_size, param_data, param_size); |
| 99 | packed_size += param_size; |
| 100 | } |
| 101 | |
| 102 | *total_size = packed_size; |
| 103 | |
| 104 | return 0; |
| 105 | } |
| 106 | EXPORT_SYMBOL(q6common_pack_pp_params); |
Aditya Bavanari | 23513e0 | 2019-02-28 11:06:41 +0530 | [diff] [blame] | 107 | |
| 108 | /** |
| 109 | * q6common_pack_pp_params_v2 |
| 110 | * |
| 111 | * Populate params header based on instance ID support and pack |
| 112 | * it with payload. |
| 113 | * Instance ID support - |
| 114 | * yes - param_hdr_v3 + payload |
| 115 | * no - param_hdr_v1 + payload |
| 116 | * |
| 117 | * @dest: destination data pointer to be packed into |
| 118 | * @v3_hdr: param header v3 |
| 119 | * @param_data: param payload |
| 120 | * @total_size: total size of packed data (hdr + payload) |
| 121 | * @iid_supported: Instance ID supported or not |
| 122 | * |
| 123 | * Returns 0 on success or error on failure |
| 124 | */ |
| 125 | int q6common_pack_pp_params_v2(u8 *dest, struct param_hdr_v3 *v3_hdr, |
| 126 | u8 *param_data, u32 *total_size, |
| 127 | bool iid_supported) |
| 128 | { |
| 129 | struct param_hdr_v1 *v1_hdr = NULL; |
| 130 | u32 packed_size = 0; |
| 131 | u32 param_size = 0; |
| 132 | |
| 133 | if (dest == NULL) { |
| 134 | pr_err("%s: Received NULL pointer for destination\n", __func__); |
| 135 | return -EINVAL; |
| 136 | } else if (v3_hdr == NULL) { |
| 137 | pr_err("%s: Received NULL pointer for header\n", __func__); |
| 138 | return -EINVAL; |
| 139 | } else if (total_size == NULL) { |
| 140 | pr_err("%s: Received NULL pointer for total size\n", __func__); |
| 141 | return -EINVAL; |
| 142 | } |
| 143 | |
| 144 | param_size = v3_hdr->param_size; |
| 145 | packed_size = iid_supported ? sizeof(struct param_hdr_v3) : |
| 146 | sizeof(struct param_hdr_v1); |
| 147 | |
| 148 | if (iid_supported) { |
| 149 | memcpy(dest, v3_hdr, packed_size); |
| 150 | } else { |
| 151 | v1_hdr = (struct param_hdr_v1 *) dest; |
| 152 | v1_hdr->module_id = v3_hdr->module_id; |
| 153 | v1_hdr->param_id = v3_hdr->param_id; |
| 154 | |
| 155 | if (param_size > U16_MAX) { |
| 156 | pr_err("%s: Invalid param size for V1 %d\n", __func__, |
| 157 | param_size); |
| 158 | return -EINVAL; |
| 159 | } |
| 160 | v1_hdr->param_size = param_size; |
| 161 | v1_hdr->reserved = 0; |
| 162 | } |
| 163 | |
| 164 | /* |
| 165 | * Make param_data optional for cases when there is no data |
| 166 | * present as in some set cases and all get cases. |
| 167 | */ |
| 168 | if (param_data != NULL) { |
| 169 | memcpy(dest + packed_size, param_data, param_size); |
| 170 | packed_size += param_size; |
| 171 | } |
| 172 | |
| 173 | *total_size = packed_size; |
| 174 | |
| 175 | return 0; |
| 176 | } |
| 177 | EXPORT_SYMBOL(q6common_pack_pp_params_v2); |