diff options
Diffstat (limited to 'sound/soc/intel/baytrail/sst-baytrail-dsp.c')
-rw-r--r-- | sound/soc/intel/baytrail/sst-baytrail-dsp.c | 358 |
1 files changed, 0 insertions, 358 deletions
diff --git a/sound/soc/intel/baytrail/sst-baytrail-dsp.c b/sound/soc/intel/baytrail/sst-baytrail-dsp.c deleted file mode 100644 index 4116ba66a4c2..000000000000 --- a/sound/soc/intel/baytrail/sst-baytrail-dsp.c +++ /dev/null @@ -1,358 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Intel Baytrail SST DSP driver - * Copyright (c) 2014, Intel Corporation. - */ - -#include <linux/delay.h> -#include <linux/fs.h> -#include <linux/slab.h> -#include <linux/device.h> -#include <linux/interrupt.h> -#include <linux/module.h> -#include <linux/dma-mapping.h> -#include <linux/platform_device.h> -#include <linux/firmware.h> - -#include "../common/sst-dsp.h" -#include "../common/sst-dsp-priv.h" -#include "sst-baytrail-ipc.h" - -#define SST_BYT_FW_SIGNATURE_SIZE 4 -#define SST_BYT_FW_SIGN "$SST" - -#define SST_BYT_IRAM_OFFSET 0xC0000 -#define SST_BYT_DRAM_OFFSET 0x100000 -#define SST_BYT_SHIM_OFFSET 0x140000 - -enum sst_ram_type { - SST_BYT_IRAM = 1, - SST_BYT_DRAM = 2, - SST_BYT_CACHE = 3, -}; - -struct dma_block_info { - enum sst_ram_type type; /* IRAM/DRAM */ - u32 size; /* Bytes */ - u32 ram_offset; /* Offset in I/DRAM */ - u32 rsvd; /* Reserved field */ -}; - -struct fw_header { - unsigned char signature[SST_BYT_FW_SIGNATURE_SIZE]; - u32 file_size; /* size of fw minus this header */ - u32 modules; /* # of modules */ - u32 file_format; /* version of header format */ - u32 reserved[4]; -}; - -struct sst_byt_fw_module_header { - unsigned char signature[SST_BYT_FW_SIGNATURE_SIZE]; - u32 mod_size; /* size of module */ - u32 blocks; /* # of blocks */ - u32 type; /* codec type, pp lib */ - u32 entry_point; -}; - -static int sst_byt_parse_module(struct sst_dsp *dsp, struct sst_fw *fw, - struct sst_byt_fw_module_header *module) -{ - struct dma_block_info *block; - struct sst_module *mod; - struct sst_module_template template; - int count; - - memset(&template, 0, sizeof(template)); - template.id = module->type; - template.entry = module->entry_point; - - mod = sst_module_new(fw, &template, NULL); - if (mod == NULL) - return -ENOMEM; - - block = (void *)module + sizeof(*module); - - for (count = 0; count < module->blocks; count++) { - - if (block->size <= 0) { - dev_err(dsp->dev, "block %d size invalid\n", count); - return -EINVAL; - } - - switch (block->type) { - case SST_BYT_IRAM: - mod->offset = block->ram_offset + - dsp->addr.iram_offset; - mod->type = SST_MEM_IRAM; - break; - case SST_BYT_DRAM: - mod->offset = block->ram_offset + - dsp->addr.dram_offset; - mod->type = SST_MEM_DRAM; - break; - case SST_BYT_CACHE: - mod->offset = block->ram_offset + - (dsp->addr.fw_ext - dsp->addr.lpe); - mod->type = SST_MEM_CACHE; - break; - default: - dev_err(dsp->dev, "wrong ram type 0x%x in block0x%x\n", - block->type, count); - return -EINVAL; - } - - mod->size = block->size; - mod->data = (void *)block + sizeof(*block); - - sst_module_alloc_blocks(mod); - - block = (void *)block + sizeof(*block) + block->size; - } - return 0; -} - -static int sst_byt_parse_fw_image(struct sst_fw *sst_fw) -{ - struct fw_header *header; - struct sst_byt_fw_module_header *module; - struct sst_dsp *dsp = sst_fw->dsp; - int ret, count; - - /* Read the header information from the data pointer */ - header = (struct fw_header *)sst_fw->dma_buf; - - /* verify FW */ - if ((strncmp(header->signature, SST_BYT_FW_SIGN, 4) != 0) || - (sst_fw->size != header->file_size + sizeof(*header))) { - /* Invalid FW signature */ - dev_err(dsp->dev, "Invalid FW sign/filesize mismatch\n"); - return -EINVAL; - } - - dev_dbg(dsp->dev, - "header sign=%4s size=0x%x modules=0x%x fmt=0x%x size=%zu\n", - header->signature, header->file_size, header->modules, - header->file_format, sizeof(*header)); - - module = (void *)sst_fw->dma_buf + sizeof(*header); - for (count = 0; count < header->modules; count++) { - /* module */ - ret = sst_byt_parse_module(dsp, sst_fw, module); - if (ret < 0) { - dev_err(dsp->dev, "invalid module %d\n", count); - return ret; - } - module = (void *)module + sizeof(*module) + module->mod_size; - } - - return 0; -} - -static void sst_byt_dump_shim(struct sst_dsp *sst) -{ - int i; - u64 reg; - - for (i = 0; i <= 0xF0; i += 8) { - reg = sst_dsp_shim_read64_unlocked(sst, i); - if (reg) - dev_dbg(sst->dev, "shim 0x%2.2x value 0x%16.16llx\n", - i, reg); - } - - for (i = 0x00; i <= 0xff; i += 4) { - reg = readl(sst->addr.pci_cfg + i); - if (reg) - dev_dbg(sst->dev, "pci 0x%2.2x value 0x%8.8x\n", - i, (u32)reg); - } -} - -static irqreturn_t sst_byt_irq(int irq, void *context) -{ - struct sst_dsp *sst = (struct sst_dsp *) context; - u64 isrx; - irqreturn_t ret = IRQ_NONE; - - spin_lock(&sst->spinlock); - - isrx = sst_dsp_shim_read64_unlocked(sst, SST_ISRX); - if (isrx & SST_ISRX_DONE) { - /* ADSP has processed the message request from IA */ - sst_dsp_shim_update_bits64_unlocked(sst, SST_IPCX, - SST_BYT_IPCX_DONE, 0); - ret = IRQ_WAKE_THREAD; - } - if (isrx & SST_BYT_ISRX_REQUEST) { - /* mask message request from ADSP and do processing later */ - sst_dsp_shim_update_bits64_unlocked(sst, SST_IMRX, - SST_BYT_IMRX_REQUEST, - SST_BYT_IMRX_REQUEST); - ret = IRQ_WAKE_THREAD; - } - - spin_unlock(&sst->spinlock); - - return ret; -} - -static void sst_byt_boot(struct sst_dsp *sst) -{ - int tries = 10; - - /* - * save the physical address of extended firmware block in the first - * 4 bytes of the mailbox - */ - memcpy_toio(sst->addr.lpe + SST_BYT_MAILBOX_OFFSET, - &sst->pdata->fw_base, sizeof(u32)); - - /* release stall and wait to unstall */ - sst_dsp_shim_update_bits64(sst, SST_CSR, SST_BYT_CSR_STALL, 0x0); - while (tries--) { - if (!(sst_dsp_shim_read64(sst, SST_CSR) & - SST_BYT_CSR_PWAITMODE)) - break; - msleep(100); - } - if (tries < 0) { - dev_err(sst->dev, "unable to start DSP\n"); - sst_byt_dump_shim(sst); - } -} - -static void sst_byt_reset(struct sst_dsp *sst) -{ - /* put DSP into reset, set reset vector and stall */ - sst_dsp_shim_update_bits64(sst, SST_CSR, - SST_BYT_CSR_RST | SST_BYT_CSR_VECTOR_SEL | SST_BYT_CSR_STALL, - SST_BYT_CSR_RST | SST_BYT_CSR_VECTOR_SEL | SST_BYT_CSR_STALL); - - udelay(10); - - /* take DSP out of reset and keep stalled for FW loading */ - sst_dsp_shim_update_bits64(sst, SST_CSR, SST_BYT_CSR_RST, 0); -} - -struct sst_adsp_memregion { - u32 start; - u32 end; - int blocks; - enum sst_mem_type type; -}; - -/* BYT test stuff */ -static const struct sst_adsp_memregion byt_region[] = { - {0xC0000, 0x100000, 8, SST_MEM_IRAM}, /* I-SRAM - 8 * 32kB */ - {0x100000, 0x140000, 8, SST_MEM_DRAM}, /* D-SRAM0 - 8 * 32kB */ -}; - -static int sst_byt_resource_map(struct sst_dsp *sst, struct sst_pdata *pdata) -{ - sst->addr.lpe_base = pdata->lpe_base; - sst->addr.lpe = ioremap(pdata->lpe_base, pdata->lpe_size); - if (!sst->addr.lpe) - return -ENODEV; - - /* ADSP PCI MMIO config space */ - sst->addr.pci_cfg = ioremap(pdata->pcicfg_base, pdata->pcicfg_size); - if (!sst->addr.pci_cfg) { - iounmap(sst->addr.lpe); - return -ENODEV; - } - - /* SST Extended FW allocation */ - sst->addr.fw_ext = ioremap(pdata->fw_base, pdata->fw_size); - if (!sst->addr.fw_ext) { - iounmap(sst->addr.pci_cfg); - iounmap(sst->addr.lpe); - return -ENODEV; - } - - /* SST Shim */ - sst->addr.shim = sst->addr.lpe + sst->addr.shim_offset; - - sst_dsp_mailbox_init(sst, SST_BYT_MAILBOX_OFFSET + 0x204, - SST_BYT_IPC_MAX_PAYLOAD_SIZE, - SST_BYT_MAILBOX_OFFSET, - SST_BYT_IPC_MAX_PAYLOAD_SIZE); - - sst->irq = pdata->irq; - - return 0; -} - -static int sst_byt_init(struct sst_dsp *sst, struct sst_pdata *pdata) -{ - const struct sst_adsp_memregion *region; - struct device *dev; - int ret = -ENODEV, i, j, region_count; - u32 offset, size; - - dev = sst->dev; - - switch (sst->id) { - case SST_DEV_ID_BYT: - region = byt_region; - region_count = ARRAY_SIZE(byt_region); - sst->addr.iram_offset = SST_BYT_IRAM_OFFSET; - sst->addr.dram_offset = SST_BYT_DRAM_OFFSET; - sst->addr.shim_offset = SST_BYT_SHIM_OFFSET; - break; - default: - dev_err(dev, "failed to get mem resources\n"); - return ret; - } - - ret = sst_byt_resource_map(sst, pdata); - if (ret < 0) { - dev_err(dev, "failed to map resources\n"); - return ret; - } - - ret = dma_coerce_mask_and_coherent(sst->dma_dev, DMA_BIT_MASK(32)); - if (ret) - return ret; - - /* enable Interrupt from both sides */ - sst_dsp_shim_update_bits64(sst, SST_IMRX, 0x3, 0x0); - sst_dsp_shim_update_bits64(sst, SST_IMRD, 0x3, 0x0); - - /* register DSP memory blocks - ideally we should get this from ACPI */ - for (i = 0; i < region_count; i++) { - offset = region[i].start; - size = (region[i].end - region[i].start) / region[i].blocks; - - /* register individual memory blocks */ - for (j = 0; j < region[i].blocks; j++) { - sst_mem_block_register(sst, offset, size, - region[i].type, NULL, j, sst); - offset += size; - } - } - - return 0; -} - -static void sst_byt_free(struct sst_dsp *sst) -{ - sst_mem_block_unregister_all(sst); - iounmap(sst->addr.lpe); - iounmap(sst->addr.pci_cfg); - iounmap(sst->addr.fw_ext); -} - -struct sst_ops sst_byt_ops = { - .reset = sst_byt_reset, - .boot = sst_byt_boot, - .write = sst_shim32_write, - .read = sst_shim32_read, - .write64 = sst_shim32_write64, - .read64 = sst_shim32_read64, - .ram_read = sst_memcpy_fromio_32, - .ram_write = sst_memcpy_toio_32, - .irq_handler = sst_byt_irq, - .init = sst_byt_init, - .free = sst_byt_free, - .parse_fw = sst_byt_parse_fw_image, -}; 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