1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * sst_pci.c - SST (LPE) driver init file for pci enumeration. 4 * 5 * Copyright (C) 2008-14 Intel Corp 6 * Authors: Vinod Koul <vinod.koul@intel.com> 7 * Harsha Priya <priya.harsha@intel.com> 8 * Dharageswari R <dharageswari.r@intel.com> 9 * KP Jeeja <jeeja.kp@intel.com> 10 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 11 * 12 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 13 */ 14 #include <linux/module.h> 15 #include <linux/pci.h> 16 #include <linux/fs.h> 17 #include <linux/firmware.h> 18 #include <sound/core.h> 19 #include <sound/soc.h> 20 #include <asm/platform_sst_audio.h> 21 #include "../sst-mfld-platform.h" 22 #include "sst.h" 23 24 static int sst_platform_get_resources(struct intel_sst_drv *ctx) 25 { 26 int ddr_base, ret = 0; 27 struct pci_dev *pci = ctx->pci; 28 29 ret = pci_request_regions(pci, SST_DRV_NAME); 30 if (ret) 31 return ret; 32 33 /* map registers */ 34 /* DDR base */ 35 if (ctx->dev_id == SST_MRFLD_PCI_ID) { 36 ctx->ddr_base = pci_resource_start(pci, 0); 37 /* check that the relocated IMR base matches with FW Binary */ 38 ddr_base = relocate_imr_addr_mrfld(ctx->ddr_base); 39 if (!ctx->pdata->lib_info) { 40 dev_err(ctx->dev, "lib_info pointer NULL\n"); 41 ret = -EINVAL; 42 goto do_release_regions; 43 } 44 if (ddr_base != ctx->pdata->lib_info->mod_base) { 45 dev_err(ctx->dev, 46 "FW LSP DDR BASE does not match with IFWI\n"); 47 ret = -EINVAL; 48 goto do_release_regions; 49 } 50 ctx->ddr_end = pci_resource_end(pci, 0); 51 52 ctx->ddr = pcim_iomap(pci, 0, 53 pci_resource_len(pci, 0)); 54 if (!ctx->ddr) { 55 ret = -EINVAL; 56 goto do_release_regions; 57 } 58 dev_dbg(ctx->dev, "sst: DDR Ptr %p\n", ctx->ddr); 59 } else { 60 ctx->ddr = NULL; 61 } 62 /* SHIM */ 63 ctx->shim_phy_add = pci_resource_start(pci, 1); 64 ctx->shim = pcim_iomap(pci, 1, pci_resource_len(pci, 1)); 65 if (!ctx->shim) { 66 ret = -EINVAL; 67 goto do_release_regions; 68 } 69 dev_dbg(ctx->dev, "SST Shim Ptr %p\n", ctx->shim); 70 71 /* Shared SRAM */ 72 ctx->mailbox_add = pci_resource_start(pci, 2); 73 ctx->mailbox = pcim_iomap(pci, 2, pci_resource_len(pci, 2)); 74 if (!ctx->mailbox) { 75 ret = -EINVAL; 76 goto do_release_regions; 77 } 78 dev_dbg(ctx->dev, "SRAM Ptr %p\n", ctx->mailbox); 79 80 /* IRAM */ 81 ctx->iram_end = pci_resource_end(pci, 3); 82 ctx->iram_base = pci_resource_start(pci, 3); 83 ctx->iram = pcim_iomap(pci, 3, pci_resource_len(pci, 3)); 84 if (!ctx->iram) { 85 ret = -EINVAL; 86 goto do_release_regions; 87 } 88 dev_dbg(ctx->dev, "IRAM Ptr %p\n", ctx->iram); 89 90 /* DRAM */ 91 ctx->dram_end = pci_resource_end(pci, 4); 92 ctx->dram_base = pci_resource_start(pci, 4); 93 ctx->dram = pcim_iomap(pci, 4, pci_resource_len(pci, 4)); 94 if (!ctx->dram) { 95 ret = -EINVAL; 96 goto do_release_regions; 97 } 98 dev_dbg(ctx->dev, "DRAM Ptr %p\n", ctx->dram); 99 do_release_regions: 100 pci_release_regions(pci); 101 return ret; 102 } 103 104 /* 105 * intel_sst_probe - PCI probe function 106 * 107 * @pci: PCI device structure 108 * @pci_id: PCI device ID structure 109 * 110 */ 111 static int intel_sst_probe(struct pci_dev *pci, 112 const struct pci_device_id *pci_id) 113 { 114 int ret = 0; 115 struct intel_sst_drv *sst_drv_ctx; 116 struct sst_platform_info *sst_pdata = pci->dev.platform_data; 117 118 dev_dbg(&pci->dev, "Probe for DID %x\n", pci->device); 119 ret = sst_alloc_drv_context(&sst_drv_ctx, &pci->dev, pci->device); 120 if (ret < 0) 121 return ret; 122 123 sst_drv_ctx->pdata = sst_pdata; 124 sst_drv_ctx->irq_num = pci->irq; 125 snprintf(sst_drv_ctx->firmware_name, sizeof(sst_drv_ctx->firmware_name), 126 "%s%04x%s", "fw_sst_", 127 sst_drv_ctx->dev_id, ".bin"); 128 129 ret = sst_context_init(sst_drv_ctx); 130 if (ret < 0) 131 return ret; 132 133 /* Init the device */ 134 ret = pcim_enable_device(pci); 135 if (ret) { 136 dev_err(sst_drv_ctx->dev, 137 "device can't be enabled. Returned err: %d\n", ret); 138 goto do_free_drv_ctx; 139 } 140 sst_drv_ctx->pci = pci_dev_get(pci); 141 ret = sst_platform_get_resources(sst_drv_ctx); 142 if (ret < 0) 143 goto do_free_drv_ctx; 144 145 pci_set_drvdata(pci, sst_drv_ctx); 146 sst_configure_runtime_pm(sst_drv_ctx); 147 148 return ret; 149 150 do_free_drv_ctx: 151 sst_context_cleanup(sst_drv_ctx); 152 dev_err(sst_drv_ctx->dev, "Probe failed with %d\n", ret); 153 return ret; 154 } 155 156 /** 157 * intel_sst_remove - PCI remove function 158 * 159 * @pci: PCI device structure 160 * 161 * This function is called by OS when a device is unloaded 162 * This frees the interrupt etc 163 */ 164 static void intel_sst_remove(struct pci_dev *pci) 165 { 166 struct intel_sst_drv *sst_drv_ctx = pci_get_drvdata(pci); 167 168 sst_context_cleanup(sst_drv_ctx); 169 pci_dev_put(sst_drv_ctx->pci); 170 pci_release_regions(pci); 171 pci_set_drvdata(pci, NULL); 172 } 173 174 /* PCI Routines */ 175 static const struct pci_device_id intel_sst_ids[] = { 176 { PCI_VDEVICE(INTEL, SST_MRFLD_PCI_ID), 0}, 177 { 0, } 178 }; 179 180 static struct pci_driver sst_driver = { 181 .name = SST_DRV_NAME, 182 .id_table = intel_sst_ids, 183 .probe = intel_sst_probe, 184 .remove = intel_sst_remove, 185 #ifdef CONFIG_PM 186 .driver = { 187 .pm = &intel_sst_pm, 188 }, 189 #endif 190 }; 191 192 module_pci_driver(sst_driver); 193 194 MODULE_DESCRIPTION("Intel (R) SST(R) Audio Engine PCI Driver"); 195 MODULE_AUTHOR("Vinod Koul <vinod.koul@intel.com>"); 196 MODULE_AUTHOR("Harsha Priya <priya.harsha@intel.com>"); 197 MODULE_AUTHOR("Dharageswari R <dharageswari.r@intel.com>"); 198 MODULE_AUTHOR("KP Jeeja <jeeja.kp@intel.com>"); 199 MODULE_LICENSE("GPL v2"); 200 MODULE_ALIAS("sst"); 201