path: root/sound/soc/intel/haswell/sst-haswell-dsp.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Intel Haswell SST DSP driver
 *
 * Copyright (C) 2013, Intel Corporation. All rights reserved.
 */

#include <linux/delay.h>
#include <linux/fs.h>
#include <linux/slab.h>
#include <linux/device.h>
#include <linux/sched.h>
#include <linux/export.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/dma-mapping.h>
#include <linux/platform_device.h>
#include <linux/pci.h>
#include <linux/firmware.h>
#include <linux/pm_runtime.h>

#include "../common/sst-dsp.h"
#include "../common/sst-dsp-priv.h"
#include "../haswell/sst-haswell-ipc.h"

#include <trace/events/hswadsp.h>

#define SST_HSW_FW_SIGNATURE_SIZE	4
#define SST_HSW_FW_SIGN			"$SST"
#define SST_HSW_FW_LIB_SIGN		"$LIB"

#define SST_WPT_SHIM_OFFSET	0xFB000
#define SST_LP_SHIM_OFFSET	0xE7000
#define SST_WPT_IRAM_OFFSET	0xA0000
#define SST_LP_IRAM_OFFSET	0x80000
#define SST_WPT_DSP_DRAM_OFFSET	0x400000
#define SST_WPT_DSP_IRAM_OFFSET	0x00000
#define SST_LPT_DSP_DRAM_OFFSET	0x400000
#define SST_LPT_DSP_IRAM_OFFSET	0x00000

#define SST_SHIM_PM_REG		0x84

#define SST_HSW_IRAM	1
#define SST_HSW_DRAM	2
#define SST_HSW_REGS	3

struct dma_block_info {
	__le32 type;		/* IRAM/DRAM */
	__le32 size;		/* Bytes */
	__le32 ram_offset;	/* Offset in I/DRAM */
	__le32 rsvd;		/* Reserved field */
} __attribute__((packed));

struct fw_module_info {
	__le32 persistent_size;
	__le32 scratch_size;
} __attribute__((packed));

struct fw_header {
	unsigned char signature[SST_HSW_FW_SIGNATURE_SIZE]; /* FW signature */
	__le32 file_size;		/* size of fw minus this header */
	__le32 modules;		/*  # of modules */
	__le32 file_format;	/* version of header format */
	__le32 reserved[4];
} __attribute__((packed));

struct fw_module_header {
	unsigned char signature[SST_HSW_FW_SIGNATURE_SIZE]; /* module signature */
	__le32 mod_size;	/* size of module */
	__le32 blocks;	/* # of blocks */
	__le16 padding;
	__le16 type;	/* codec type, pp lib */
	__le32 entry_point;
	struct fw_module_info info;
} __attribute__((packed));

static void hsw_free(struct sst_dsp *sst);

static int hsw_parse_module(struct sst_dsp *dsp, struct sst_fw *fw,
	struct fw_module_header *module)
{
	struct dma_block_info *block;
	struct sst_module *mod;
	struct sst_module_template template;
	int count, ret;
	void __iomem *ram;
	int type = le16_to_cpu(module->type);
	int entry_point = le32_to_cpu(module->entry_point);

	/* TODO: allowed module types need to be configurable */
	if (type != SST_HSW_MODULE_BASE_FW &&
	    type != SST_HSW_MODULE_PCM_SYSTEM &&
	    type != SST_HSW_MODULE_PCM &&
	    type != SST_HSW_MODULE_PCM_REFERENCE &&
	    type != SST_HSW_MODULE_PCM_CAPTURE &&
	    type != SST_HSW_MODULE_WAVES &&
	    type != SST_HSW_MODULE_LPAL)
		return 0;

	dev_dbg(dsp->dev, "new module sign 0x%s size 0x%x blocks 0x%x type 0x%x\n",
		module->signature, module->mod_size,
		module->blocks, type);
	dev_dbg(dsp->dev, " entrypoint 0x%x\n", entry_point);
	dev_dbg(dsp->dev, " persistent 0x%x scratch 0x%x\n",
		module->info.persistent_size, module->info.scratch_size);

	memset(&template, 0, sizeof(template));
	template.id = type;
	template.entry = entry_point - 4;
	template.persistent_size = le32_to_cpu(module->info.persistent_size);
	template.scratch_size = le32_to_cpu(module->info.scratch_size);

	mod = sst_module_new(fw, &template, NULL);
	if (mod == NULL)
		return -ENOMEM;

	block = (void *)module + sizeof(*module);

	for (count = 0; count < le32_to_cpu(module->blocks); count++) {

		if (le32_to_cpu(block->size) <= 0) {
			dev_err(dsp->dev,
				"error: block %d size invalid\n", count);
			sst_module_free(mod);
			return -EINVAL;
		}

		switch (le32_to_cpu(block->type)) {
		case SST_HSW_IRAM:
			ram = dsp->addr.lpe;
			mod->offset = le32_to_cpu(block->ram_offset) +
				dsp->addr.iram_offset;
			mod->type = SST_MEM_IRAM;
			break;
		case SST_HSW_DRAM:
		case SST_HSW_REGS:
			ram = dsp->addr.lpe;
			mod->offset = le32_to_cpu(block->ram_offset);
			mod->type = SST_MEM_DRAM;
			break;
		default:
			dev_err(dsp->dev, "error: bad type 0x%x for block 0x%x\n",
				block->type, count);
			sst_module_free(mod);
			return -EINVAL;
		}

		mod->size = le32_to_cpu(block->size);
		mod->data = (void *)block + sizeof(*block);
		mod->data_offset = mod->data - fw->dma_buf;

		dev_dbg(dsp->dev, "module block %d type 0x%x "
			"size 0x%x ==> ram %p offset 0x%x\n",
			count, mod->type, block->size, ram,
			block->ram_offset);

		ret = sst_module_alloc_blocks(mod);
		if (ret < 0) {
			dev_err(dsp->dev, "error: could not allocate blocks for module %d\n",
				count);
			sst_module_free(mod);
			return ret;
		}

		block = (void *)block + sizeof(*block) +
			le32_to_cpu(block->size);
	}
	mod->state = SST_MODULE_STATE_LOADED;

	return 0;
}

static int hsw_parse_fw_image(struct sst_fw *sst_fw)
{
	struct fw_header *header;
	struct 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_HSW_FW_SIGN, 4) != 0) ||
	    (sst_fw->size !=
	     le32_to_cpu(header->file_size) + sizeof(*header))) {
		dev_err(dsp->dev, "error: invalid fw sign/filesize mismatch\n");
		return -EINVAL;
	}

	dev_dbg(dsp->dev, "header size=0x%x modules=0x%x fmt=0x%x size=%zu\n",
		header->file_size, header->modules,
		header->file_format, sizeof(*header));

	/* parse each module */
	module = (void *)sst_fw->dma_buf + sizeof(*header);
	for (count = 0; count < le32_to_cpu(header->modules); count++) {

		/* module */
		ret = hsw_parse_module(dsp, sst_fw, module);
		if (ret < 0) {
			dev_err(dsp->dev, "error: invalid module %d\n", count);
			return ret;
		}
		module = (void *)module + sizeof(*module) +
			le32_to_cpu(module->mod_size);
	}

	return 0;
}

static irqreturn_t hsw_irq(int irq, void *context)
{
	struct sst_dsp *sst = (struct sst_dsp *) context;
	u32 isr;
	int ret = IRQ_NONE;

	spin_lock(&sst->spinlock);

	/* Interrupt arrived, check src */
	isr = sst_dsp_shim_read_unlocked(sst, SST_ISRX);
	if (isr & SST_ISRX_DONE) {
		trace_sst_irq_done(isr,
			sst_dsp_shim_read_unlocked(sst, SST_IMRX));

		/* Mask Done interrupt before return */
		sst_dsp_shim_update_bits_unlocked(sst, SST_IMRX,
			SST_IMRX_DONE, SST_IMRX_DONE);
		ret = IRQ_WAKE_THREAD;
	}

	if (isr & SST_ISRX_BUSY) {
		trace_sst_irq_busy(isr,
			sst_dsp_shim_read_unlocked(sst, SST_IMRX));

		/* Mask Busy interrupt before return */
		sst_dsp_shim_update_bits_unlocked(sst, SST_IMRX,
			SST_IMRX_BUSY, SST_IMRX_BUSY);
		ret = IRQ_WAKE_THREAD;
	}

	spin_unlock(&sst->spinlock);
	return ret;
}

#define CSR_DEFAULT_VALUE 0x8480040E
#define ISC_DEFAULT_VALUE 0x0
#define ISD_DEFAULT_VALUE 0x0
#define IMC_DEFAULT_VALUE 0x7FFF0003
#define IMD_DEFAULT_VALUE 0x7FFF0003
#define IPCC_DEFAULT_VALUE 0x0
#define IPCD_DEFAULT_VALUE 0x0
#define CLKCTL_DEFAULT_VALUE 0x7FF
#define CSR2_DEFAULT_VALUE 0x0
#define LTR_CTRL_DEFAULT_VALUE 0x0
#define HMD_CTRL_DEFAULT_VALUE 0x0

static void hsw_set_shim_defaults(struct sst_dsp *sst)
{
	sst_dsp_shim_write_unlocked(sst, SST_CSR, CSR_DEFAULT_VALUE);
	sst_dsp_shim_write_unlocked(sst, SST_ISRX, ISC_DEFAULT_VALUE);
	sst_dsp_shim_write_unlocked(sst, SST_ISRD, ISD_DEFAULT_VALUE);
	sst_dsp_shim_write_unlocked(sst, SST_IMRX, IMC_DEFAULT_VALUE);
	sst_dsp_shim_write_unlocked(sst, SST_IMRD, IMD_DEFAULT_VALUE);
	sst_dsp_shim_write_unlocked(sst, SST_IPCX, IPCC_DEFAULT_VALUE);
	sst_dsp_shim_write_unlocked(sst, SST_IPCD, IPCD_DEFAULT_VALUE);
	sst_dsp_shim_write_unlocked(sst, SST_CLKCTL, CLKCTL_DEFAULT_VALUE);
	sst_dsp_shim_write_unlocked(sst, SST_CSR2, CSR2_DEFAULT_VALUE);
	sst_dsp_shim_write_unlocked(sst, SST_LTRC, LTR_CTRL_DEFAULT_VALUE);
	sst_dsp_shim_write_unlocked(sst, SST_HMDC, HMD_CTRL_DEFAULT_VALUE);
}

/* all clock-gating minus DCLCGE and DTCGE */
#define SST_VDRTCL2_CG_OTHER	0xB7D

static void hsw_set_dsp_D3(struct sst_dsp *sst)
{
	u32 reg;

	/* disable clock core gating */
	reg = readl(sst->addr.pci_cfg + SST_VDRTCTL2);
	reg &= ~(SST_VDRTCL2_DCLCGE);
	writel(reg, sst->addr.pci_cfg + SST_VDRTCTL2);

	/* stall, reset and set 24MHz XOSC */
	sst_dsp_shim_update_bits_unlocked(sst, SST_CSR,
			SST_CSR_24MHZ_LPCS | SST_CSR_STALL | SST_CSR_RST,
			SST_CSR_24MHZ_LPCS | SST_CSR_STALL | SST_CSR_RST);

	/* DRAM power gating all */
	reg = readl(sst->addr.pci_cfg + SST_VDRTCTL0);
	reg |= SST_VDRTCL0_ISRAMPGE_MASK |
		SST_VDRTCL0_DSRAMPGE_MASK;
	reg &= ~(SST_VDRTCL0_D3SRAMPGD);
	reg |= SST_VDRTCL0_D3PGD;
	writel(reg, sst->addr.pci_cfg + SST_VDRTCTL0);
	udelay(50);

	/* PLL shutdown enable */
	reg = readl(sst->addr.pci_cfg + SST_VDRTCTL2);
	reg |= SST_VDRTCL2_APLLSE_MASK;
	writel(reg, sst->addr.pci_cfg + SST_VDRTCTL2);

	/* disable MCLK */
	sst_dsp_shim_update_bits_unlocked(sst, SST_CLKCTL,
			SST_CLKCTL_MASK, 0);

	/* switch clock gating */
	reg = readl(sst->addr.pci_cfg + SST_VDRTCTL2);
	reg |= SST_VDRTCL2_CG_OTHER;
	reg &= ~(SST_VDRTCL2_DTCGE);
	writel(reg, sst->addr.pci_cfg + SST_VDRTCTL2);
	/* enable DTCGE separatelly */
	reg = readl(sst->addr.pci_cfg + SST_VDRTCTL2);
	reg |= SST_VDRTCL2_DTCGE;
	writel(reg, sst->addr.pci_cfg + SST_VDRTCTL2);

	/* set shim defaults */
	hsw_set_shim_defaults(sst);

	/* set D3 */
	reg = readl(sst->addr.pci_cfg + SST_PMCS);
	reg |= SST_PMCS_PS_MASK;
	writel(reg, sst->addr.pci_cfg + SST_PMCS);
	udelay(50);

	/* enable clock core gating */
	reg = readl(sst->addr.pci_cfg + SST_VDRTCTL2);
	reg |= SST_VDRTCL2_DCLCGE;
	writel(reg, sst->addr.pci_cfg + SST_VDRTCTL2);
	udelay(50);
}

static void hsw_reset(struct sst_dsp *sst)
{
	/* put DSP into reset and stall */
	sst_dsp_shim_update_bits_unlocked(sst, SST_CSR,
		SST_CSR_RST | SST_CSR_STALL,
		SST_CSR_RST | SST_CSR_STALL);

	/* keep in reset for 10ms */
	mdelay(10);

	/* take DSP out of reset and keep stalled for FW loading */
	sst_dsp_shim_update_bits_unlocked(sst, SST_CSR,
		SST_CSR_RST | SST_CSR_STALL, SST_CSR_STALL);
}

/* recommended CSR state for power-up */
#define SST_CSR_D0_MASK (0x18A09C0C | SST_CSR_DCS_MASK)

static int hsw_set_dsp_D0(struct sst_dsp *sst)
{
	u32 reg;

	/* disable clock core gating */
	reg = readl(sst->addr.pci_cfg + SST_VDRTCTL2);
	reg &= ~(SST_VDRTCL2_DCLCGE);
	writel(reg, sst->addr.pci_cfg + SST_VDRTCTL2);

	/* switch clock gating */
	reg = readl(sst->addr.pci_cfg + SST_VDRTCTL2);
	reg |= SST_VDRTCL2_CG_OTHER;
	reg &= ~(SST_VDRTCL2_DTCGE);
	writel(reg, sst->addr.pci_cfg + SST_VDRTCTL2);

	/* set D0 */
	reg = readl(sst->addr.pci_cfg + SST_PMCS);
	reg &= ~(SST_PMCS_PS_MASK);
	writel(reg, sst->addr.pci_cfg + SST_PMCS);

	/* DRAM power gating none */
	reg = readl(sst->addr.pci_cfg + SST_VDRTCTL0);
	reg &= ~(SST_VDRTCL0_ISRAMPGE_MASK |
		SST_VDRTCL0_DSRAMPGE_MASK);
	reg |= SST_VDRTCL0_D3SRAMPGD;
	reg |= SST_VDRTCL0_D3PGD;
	writel(reg, sst->addr.pci_cfg + SST_VDRTCTL0);
	mdelay(10);

	/* set shim defaults */
	hsw_set_shim_defaults(sst);

	/* restore MCLK */
	sst_dsp_shim_update_bits_unlocked(sst, SST_CLKCTL,
			SST_CLKCTL_MASK, SST_CLKCTL_MASK);

	/* PLL shutdown disable */
	reg = readl(sst->addr.pci_cfg + SST_VDRTCTL2);
	reg &= ~(SST_VDRTCL2_APLLSE_MASK);
	writel(reg, sst->addr.pci_cfg + SST_VDRTCTL2);

	sst_dsp_shim_update_bits_unlocked(sst, SST_CSR,
			SST_CSR_D0_MASK, SST_CSR_SBCS0 | SST_CSR_SBCS1 |
			SST_CSR_STALL | SST_CSR_DCS(4));
	udelay(50);

	/* enable clock core gating */
	reg = readl(sst->addr.pci_cfg + SST_VDRTCTL2);
	reg |= SST_VDRTCL2_DCLCGE;
	writel(reg, sst->addr.pci_cfg + SST_VDRTCTL2);

	/* clear reset */
	sst_dsp_shim_update_bits_unlocked(sst, SST_CSR, SST_CSR_RST, 0);

	/* disable DMA finish function for SSP0 & SSP1 */
	sst_dsp_shim_update_bits_unlocked(sst, SST_CSR2, SST_CSR2_SDFD_SSP1,
		SST_CSR2_SDFD_SSP1);

	/* set on-demond mode on engine 0,1 for all channels */
	sst_dsp_shim_update_bits(sst, SST_HMDC,
			SST_HMDC_HDDA_E0_ALLCH | SST_HMDC_HDDA_E1_ALLCH,
			SST_HMDC_HDDA_E0_ALLCH | SST_HMDC_HDDA_E1_ALLCH);

	/* Enable Interrupt from both sides */
	sst_dsp_shim_update_bits(sst, SST_IMRX, (SST_IMRX_BUSY | SST_IMRX_DONE),
				 0x0);
	sst_dsp_shim_update_bits(sst, SST_IMRD, (SST_IMRD_DONE | SST_IMRD_BUSY |
				SST_IMRD_SSP0 | SST_IMRD_DMAC), 0x0);

	return 0;
}

static void hsw_boot(struct sst_dsp *sst)
{
	/* set oportunistic mode on engine 0,1 for all channels */
	sst_dsp_shim_update_bits(sst, SST_HMDC,
			SST_HMDC_HDDA_E0_ALLCH | SST_HMDC_HDDA_E1_ALLCH, 0);

	/* set DSP to RUN */
	sst_dsp_shim_update_bits_unlocked(sst, SST_CSR, SST_CSR_STALL, 0x0);
}

static void hsw_stall(struct sst_dsp *sst)
{
	/* stall DSP */
	sst_dsp_shim_update_bits(sst, SST_CSR,
		SST_CSR_24MHZ_LPCS | SST_CSR_STALL,
		SST_CSR_STALL | SST_CSR_24MHZ_LPCS);
}

static void hsw_sleep(struct sst_dsp *sst)
{
	dev_dbg(sst->dev, "HSW_PM dsp runtime suspend\n");

	hsw_set_dsp_D3(sst);
	dev_dbg(sst->dev, "HSW_PM dsp runtime suspend exit\n");
}

static int hsw_wake(struct sst_dsp *sst)
{
	int ret;

	dev_dbg(sst->dev, "HSW_PM dsp runtime resume\n");

	ret = hsw_set_dsp_D0(sst);
	if (ret < 0)
		return ret;

	dev_dbg(sst->dev, "HSW_PM dsp runtime resume exit\n");

	return 0;
}

struct sst_adsp_memregion {
	u32 start;
	u32 end;
	int blocks;
	enum sst_mem_type type;
};

/* lynx point ADSP mem regions */
static const struct sst_adsp_memregion lp_region[] = {
	{0x00000, 0x40000, 8, SST_MEM_DRAM}, /* D-SRAM0 - 8 * 32kB */
	{0x40000, 0x80000, 8, SST_MEM_DRAM}, /* D-SRAM1 - 8 * 32kB */
	{0x80000, 0xE0000, 12, SST_MEM_IRAM}, /* I-SRAM - 12 * 32kB */
};

/* wild cat point ADSP mem regions */
static const struct sst_adsp_memregion wpt_region[] = {
	{0x00000, 0xA0000, 20, SST_MEM_DRAM}, /* D-SRAM0,D-SRAM1,D-SRAM2 - 20 * 32kB */
	{0xA0000, 0xF0000, 10, SST_MEM_IRAM}, /* I-SRAM - 10 * 32kB */
};

static int hsw_acpi_resource_map(struct sst_dsp *sst, struct sst_pdata *pdata)
{
	/* ADSP DRAM & IRAM */
	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 Shim */
	sst->addr.shim = sst->addr.lpe + sst->addr.shim_offset;
	return 0;
}

struct sst_sram_shift {
	u32 dev_id;	/* SST Device IDs  */
	u32 iram_shift;
	u32 dram_shift;
};

static const struct sst_sram_shift sram_shift[] = {
	{SST_DEV_ID_LYNX_POINT, 6, 16}, /* lp */
	{SST_DEV_ID_WILDCAT_POINT, 2, 12}, /* wpt */
};

static u32 hsw_block_get_bit(struct sst_mem_block *block)
{
	u32 bit = 0, shift = 0, index;
	struct sst_dsp *sst = block->dsp;

	for (index = 0; index < ARRAY_SIZE(sram_shift); index++) {
		if (sram_shift[index].dev_id == sst->id)
			break;
	}

	if (index < ARRAY_SIZE(sram_shift)) {
		switch (block->type) {
		case SST_MEM_DRAM:
			shift = sram_shift[index].dram_shift;
			break;
		case SST_MEM_IRAM:
			shift = sram_shift[index].iram_shift;
			break;
		default:
			shift = 0;
		}
	} else
		shift = 0;

	bit = 1 << (block->index + shift);

	return bit;
}

/*dummy read a SRAM block.*/
static void sst_mem_block_dummy_read(struct sst_mem_block *block)
{
	u32 size;
	u8 tmp_buf[4];
	struct sst_dsp *sst = block->dsp;

	size = block->size > 4 ? 4 : block->size;
	memcpy_fromio(tmp_buf, sst->addr.lpe + block->offset, size);
}

/* enable 32kB memory block - locks held by caller */
static int hsw_block_enable(struct sst_mem_block *block)
{
	struct sst_dsp *sst = block->dsp;
	u32 bit, val;

	if (block->users++ > 0)
		return 0;

	dev_dbg(block->dsp->dev, " enabled block %d:%d at offset 0x%x\n",
		block->type, block->index, block->offset);

	/* Disable core clock gating (VDRTCTL2.DCLCGE = 0) */
	val = readl(sst->addr.pci_cfg + SST_VDRTCTL2);
	val &= ~SST_VDRTCL2_DCLCGE;
	writel(val, sst->addr.pci_cfg + SST_VDRTCTL2);

	val = readl(sst->addr.pci_cfg + SST_VDRTCTL0);
	bit = hsw_block_get_bit(block);
	writel(val & ~bit, sst->addr.pci_cfg + SST_VDRTCTL0);

	/* wait 18 DSP clock ticks */
	udelay(10);

	/* Enable core clock gating (VDRTCTL2.DCLCGE = 1), delay 50 us */
	val = readl(sst->addr.pci_cfg + SST_VDRTCTL2);
	val |= SST_VDRTCL2_DCLCGE;
	writel(val, sst->addr.pci_cfg + SST_VDRTCTL2);

	udelay(50);

	/*add a dummy read before the SRAM block is written, otherwise the writing may miss bytes sometimes.*/
	sst_mem_block_dummy_read(block);
	return 0;
}

/* disable 32kB memory block - locks held by caller */
static int hsw_block_disable(struct sst_mem_block *block)
{
	struct sst_dsp *sst = block->dsp;
	u32 bit, val;

	if (--block->users > 0)
		return 0;

	dev_dbg(block->dsp->dev, " disabled block %d:%d at offset 0x%x\n",
		block->type, block->index, block->offset);

	/* Disable core clock gating (VDRTCTL2.DCLCGE = 0) */
	val = readl(sst->addr.pci_cfg + SST_VDRTCTL2);
	val &= ~SST_VDRTCL2_DCLCGE;
	writel(val, sst->addr.pci_cfg + SST_VDRTCTL2);


	val = readl(sst->addr.pci_cfg + SST_VDRTCTL0);
	bit = hsw_block_get_bit(block);
	/* don't disable DSRAM[0], keep it always enable for FW dump*/
	if (bit != (1 << SST_VDRTCL0_DSRAMPGE_SHIFT))
		writel(val | bit, sst->addr.pci_cfg + SST_VDRTCTL0);

	/* wait 18 DSP clock ticks */
	udelay(10);

	/* Enable core clock gating (VDRTCTL2.DCLCGE = 1), delay 50 us */
	val = readl(sst->addr.pci_cfg + SST_VDRTCTL2);
	val |= SST_VDRTCL2_DCLCGE;
	writel(val, sst->addr.pci_cfg + SST_VDRTCTL2);

	udelay(50);

	return 0;
}

static const struct sst_block_ops sst_hsw_ops = {
	.enable = hsw_block_enable,
	.disable = hsw_block_disable,
};

static int hsw_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, fw_dump_bit;

	dev = sst->dma_dev;

	switch (sst->id) {
	case SST_DEV_ID_LYNX_POINT:
		region = lp_region;
		region_count = ARRAY_SIZE(lp_region);
		sst->addr.iram_offset = SST_LP_IRAM_OFFSET;
		sst->addr.dsp_iram_offset = SST_LPT_DSP_IRAM_OFFSET;
		sst->addr.dsp_dram_offset = SST_LPT_DSP_DRAM_OFFSET;
		sst->addr.shim_offset = SST_LP_SHIM_OFFSET;
		break;
	case SST_DEV_ID_WILDCAT_POINT:
		region = wpt_region;
		region_count = ARRAY_SIZE(wpt_region);
		sst->addr.iram_offset = SST_WPT_IRAM_OFFSET;
		sst->addr.dsp_iram_offset = SST_WPT_DSP_IRAM_OFFSET;
		sst->addr.dsp_dram_offset = SST_WPT_DSP_DRAM_OFFSET;
		sst->addr.shim_offset = SST_WPT_SHIM_OFFSET;
		break;
	default:
		dev_err(dev, "error: failed to get mem resources\n");
		return ret;
	}

	ret = hsw_acpi_resource_map(sst, pdata);
	if (ret < 0) {
		dev_err(dev, "error: failed to map resources\n");
		return ret;
	}

	/* enable the DSP SHIM */
	ret = hsw_set_dsp_D0(sst);
	if (ret < 0) {
		dev_err(dev, "error: failed to set DSP D0 and reset SHIM\n");
		return ret;
	}

	ret = dma_coerce_mask_and_coherent(dev, DMA_BIT_MASK(31));
	if (ret)
		return ret;


	/* 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, &sst_hsw_ops, j, sst);
			offset += size;
		}
	}

	/* always enable the block(DSRAM[0]) used for FW dump */
	fw_dump_bit = 1 << SST_VDRTCL0_DSRAMPGE_SHIFT;
	/* set default power gating control, enable power gating control for all blocks. that is,
	can't be accessed, please enable each block before accessing. */
	writel(0xffffffff & ~fw_dump_bit, sst->addr.pci_cfg + SST_VDRTCTL0);

	return 0;
}

static void hsw_free(struct sst_dsp *sst)
{
	sst_mem_block_unregister_all(sst);
	iounmap(sst->addr.lpe);
	iounmap(sst->addr.pci_cfg);
}

struct sst_ops haswell_ops = {
	.reset = hsw_reset,
	.boot = hsw_boot,
	.stall = hsw_stall,
	.wake = hsw_wake,
	.sleep = hsw_sleep,
	.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 = hsw_irq,
	.init = hsw_init,
	.free = hsw_free,
	.parse_fw = hsw_parse_fw_image,
};