[PATCH v5 02/21] ASoC: SOF: Intel: Add BDW HW DSP support

[Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>]

From: Liam Girdwood <liam.r.girdwood@linux.intel.com>

Add SOF support for Intel Broadwell based devices.

Signed-off-by: Rander Wang <rander.wang@linux.intel.com>
Signed-off-by: Pan Xiuli <xiuli.pan@linux.intel.com>
Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
---
 sound/soc/sof/intel/bdw.c | 713 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 713 insertions(+)
 create mode 100644 sound/soc/sof/intel/bdw.c

diff --git a/sound/soc/sof/intel/bdw.c b/sound/soc/sof/intel/bdw.c
new file mode 100644
index 000000000000..065cb868bdfa
--- /dev/null
+++ b/sound/soc/sof/intel/bdw.c
@@ -0,0 +1,713 @@
+// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
+//
+// This file is provided under a dual BSD/GPLv2 license.  When using or
+// redistributing this file, you may do so under either license.
+//
+// Copyright(c) 2018 Intel Corporation. All rights reserved.
+//
+// Author: Liam Girdwood <liam.r.girdwood@linux.intel.com>
+//
+
+/*
+ * Hardware interface for audio DSP on Broadwell
+ */
+
+#include <linux/module.h>
+#include <sound/sof.h>
+#include <sound/sof/xtensa.h>
+#include "../ops.h"
+#include "shim.h"
+
+/* BARs */
+#define BDW_DSP_BAR 0
+#define BDW_PCI_BAR 1
+
+/*
+ * Debug
+ */
+
+/* DSP memories for BDW */
+#define IRAM_OFFSET     0xA0000
+#define BDW_IRAM_SIZE       (10 * 32 * 1024)
+#define DRAM_OFFSET     0x00000
+#define BDW_DRAM_SIZE       (20 * 32 * 1024)
+#define SHIM_OFFSET     0xFB000
+#define SHIM_SIZE       0x100
+#define MBOX_OFFSET     0x9E000
+#define MBOX_SIZE       0x1000
+#define MBOX_DUMP_SIZE 0x30
+#define EXCEPT_OFFSET	0x800
+
+/* DSP peripherals */
+#define DMAC0_OFFSET    0xFE000
+#define DMAC1_OFFSET    0xFF000
+#define DMAC_SIZE       0x420
+#define SSP0_OFFSET     0xFC000
+#define SSP1_OFFSET     0xFD000
+#define SSP_SIZE	0x100
+
+#define BDW_STACK_DUMP_SIZE	32
+
+#define BDW_PANIC_OFFSET(x)	((x) & 0xFFFF)
+
+static const struct snd_sof_debugfs_map bdw_debugfs[] = {
+	{"dmac0", BDW_DSP_BAR, DMAC0_OFFSET, DMAC_SIZE,
+	 SOF_DEBUGFS_ACCESS_ALWAYS},
+	{"dmac1", BDW_DSP_BAR, DMAC1_OFFSET, DMAC_SIZE,
+	 SOF_DEBUGFS_ACCESS_ALWAYS},
+	{"ssp0", BDW_DSP_BAR, SSP0_OFFSET, SSP_SIZE,
+	 SOF_DEBUGFS_ACCESS_ALWAYS},
+	{"ssp1", BDW_DSP_BAR, SSP1_OFFSET, SSP_SIZE,
+	 SOF_DEBUGFS_ACCESS_ALWAYS},
+	{"iram", BDW_DSP_BAR, IRAM_OFFSET, BDW_IRAM_SIZE,
+	 SOF_DEBUGFS_ACCESS_D0_ONLY},
+	{"dram", BDW_DSP_BAR, DRAM_OFFSET, BDW_DRAM_SIZE,
+	 SOF_DEBUGFS_ACCESS_D0_ONLY},
+	{"shim", BDW_DSP_BAR, SHIM_OFFSET, SHIM_SIZE,
+	 SOF_DEBUGFS_ACCESS_ALWAYS},
+};
+
+static void bdw_host_done(struct snd_sof_dev *sdev);
+static void bdw_dsp_done(struct snd_sof_dev *sdev);
+static void bdw_get_reply(struct snd_sof_dev *sdev);
+
+/*
+ * DSP Control.
+ */
+
+static int bdw_run(struct snd_sof_dev *sdev)
+{
+	/* set opportunistic mode on engine 0,1 for all channels */
+	snd_sof_dsp_update_bits(sdev, BDW_DSP_BAR, SHIM_HMDC,
+				SHIM_HMDC_HDDA_E0_ALLCH |
+				SHIM_HMDC_HDDA_E1_ALLCH, 0);
+
+	/* set DSP to RUN */
+	snd_sof_dsp_update_bits_unlocked(sdev, BDW_DSP_BAR, SHIM_CSR,
+					 SHIM_CSR_STALL, 0x0);
+
+	/* return init core mask */
+	return 1;
+}
+
+static int bdw_reset(struct snd_sof_dev *sdev)
+{
+	/* put DSP into reset and stall */
+	snd_sof_dsp_update_bits_unlocked(sdev, BDW_DSP_BAR, SHIM_CSR,
+					 SHIM_CSR_RST | SHIM_CSR_STALL,
+					 SHIM_CSR_RST | SHIM_CSR_STALL);
+
+	/* keep in reset for 10ms */
+	mdelay(10);
+
+	/* take DSP out of reset and keep stalled for FW loading */
+	snd_sof_dsp_update_bits_unlocked(sdev, BDW_DSP_BAR, SHIM_CSR,
+					 SHIM_CSR_RST | SHIM_CSR_STALL,
+					 SHIM_CSR_STALL);
+
+	return 0;
+}
+
+static int bdw_set_dsp_D0(struct snd_sof_dev *sdev)
+{
+	int tries = 10;
+	u32 reg;
+
+	/* Disable core clock gating (VDRTCTL2.DCLCGE = 0) */
+	snd_sof_dsp_update_bits_unlocked(sdev, BDW_PCI_BAR, PCI_VDRTCTL2,
+					 PCI_VDRTCL2_DCLCGE |
+					 PCI_VDRTCL2_DTCGE, 0);
+
+	/* Disable D3PG (VDRTCTL0.D3PGD = 1) */
+	snd_sof_dsp_update_bits_unlocked(sdev, BDW_PCI_BAR, PCI_VDRTCTL0,
+					 PCI_VDRTCL0_D3PGD, PCI_VDRTCL0_D3PGD);
+
+	/* Set D0 state */
+	snd_sof_dsp_update_bits_unlocked(sdev, BDW_PCI_BAR, PCI_PMCS,
+					 PCI_PMCS_PS_MASK, 0);
+
+	/* check that ADSP shim is enabled */
+	while (tries--) {
+		reg = readl(sdev->bar[BDW_PCI_BAR] + PCI_PMCS)
+			& PCI_PMCS_PS_MASK;
+		if (reg == 0)
+			goto finish;
+
+		msleep(20);
+	}
+
+	return -ENODEV;
+
+finish:
+	/*
+	 * select SSP1 19.2MHz base clock, SSP clock 0,
+	 * turn off Low Power Clock
+	 */
+	snd_sof_dsp_update_bits_unlocked(sdev, BDW_DSP_BAR, SHIM_CSR,
+					 SHIM_CSR_S1IOCS | SHIM_CSR_SBCS1 |
+					 SHIM_CSR_LPCS, 0x0);
+
+	/* stall DSP core, set clk to 192/96Mhz */
+	snd_sof_dsp_update_bits_unlocked(sdev, BDW_DSP_BAR,
+					 SHIM_CSR, SHIM_CSR_STALL |
+					 SHIM_CSR_DCS_MASK,
+					 SHIM_CSR_STALL |
+					 SHIM_CSR_DCS(4));
+
+	/* Set 24MHz MCLK, prevent local clock gating, enable SSP0 clock */
+	snd_sof_dsp_update_bits_unlocked(sdev, BDW_DSP_BAR, SHIM_CLKCTL,
+					 SHIM_CLKCTL_MASK |
+					 SHIM_CLKCTL_DCPLCG |
+					 SHIM_CLKCTL_SCOE0,
+					 SHIM_CLKCTL_MASK |
+					 SHIM_CLKCTL_DCPLCG |
+					 SHIM_CLKCTL_SCOE0);
+
+	/* Stall and reset core, set CSR */
+	bdw_reset(sdev);
+
+	/* Enable core clock gating (VDRTCTL2.DCLCGE = 1), delay 50 us */
+	snd_sof_dsp_update_bits_unlocked(sdev, BDW_PCI_BAR, PCI_VDRTCTL2,
+					 PCI_VDRTCL2_DCLCGE |
+					 PCI_VDRTCL2_DTCGE,
+					 PCI_VDRTCL2_DCLCGE |
+					 PCI_VDRTCL2_DTCGE);
+
+	usleep_range(50, 55);
+
+	/* switch on audio PLL */
+	snd_sof_dsp_update_bits_unlocked(sdev, BDW_PCI_BAR, PCI_VDRTCTL2,
+					 PCI_VDRTCL2_APLLSE_MASK, 0);
+
+	/*
+	 * set default power gating control, enable power gating control for
+	 * all blocks. that is, can't be accessed, please enable each block
+	 * before accessing.
+	 */
+	snd_sof_dsp_update_bits_unlocked(sdev, BDW_PCI_BAR, PCI_VDRTCTL0,
+					 0xfffffffC, 0x0);
+
+	/* disable DMA finish function for SSP0 & SSP1 */
+	snd_sof_dsp_update_bits_unlocked(sdev, BDW_DSP_BAR,  SHIM_CSR2,
+					 SHIM_CSR2_SDFD_SSP1,
+					 SHIM_CSR2_SDFD_SSP1);
+
+	/* set on-demond mode on engine 0,1 for all channels */
+	snd_sof_dsp_update_bits(sdev, BDW_DSP_BAR, SHIM_HMDC,
+				SHIM_HMDC_HDDA_E0_ALLCH |
+				SHIM_HMDC_HDDA_E1_ALLCH,
+				SHIM_HMDC_HDDA_E0_ALLCH |
+				SHIM_HMDC_HDDA_E1_ALLCH);
+
+	/* Enable Interrupt from both sides */
+	snd_sof_dsp_update_bits(sdev, BDW_DSP_BAR, SHIM_IMRX,
+				(SHIM_IMRX_BUSY | SHIM_IMRX_DONE), 0x0);
+	snd_sof_dsp_update_bits(sdev, BDW_DSP_BAR, SHIM_IMRD,
+				(SHIM_IMRD_DONE | SHIM_IMRD_BUSY |
+				SHIM_IMRD_SSP0 | SHIM_IMRD_DMAC), 0x0);
+
+	/* clear IPC registers */
+	snd_sof_dsp_write(sdev, BDW_DSP_BAR, SHIM_IPCX, 0x0);
+	snd_sof_dsp_write(sdev, BDW_DSP_BAR, SHIM_IPCD, 0x0);
+	snd_sof_dsp_write(sdev, BDW_DSP_BAR, 0x80, 0x6);
+	snd_sof_dsp_write(sdev, BDW_DSP_BAR, 0xe0, 0x300a);
+
+	return 0;
+}
+
+static void bdw_get_registers(struct snd_sof_dev *sdev,
+			      struct sof_ipc_dsp_oops_xtensa *xoops,
+			      struct sof_ipc_panic_info *panic_info,
+			      u32 *stack, size_t stack_words)
+{
+	/* first read regsisters */
+	sof_mailbox_read(sdev, sdev->dsp_oops_offset, xoops, sizeof(*xoops));
+
+	/* then get panic info */
+	sof_mailbox_read(sdev, sdev->dsp_oops_offset + sizeof(*xoops),
+			 panic_info, sizeof(*panic_info));
+
+	/* then get the stack */
+	sof_mailbox_read(sdev, sdev->dsp_oops_offset + sizeof(*xoops) +
+			   sizeof(*panic_info), stack,
+			   stack_words * sizeof(u32));
+}
+
+static void bdw_dump(struct snd_sof_dev *sdev, u32 flags)
+{
+	struct sof_ipc_dsp_oops_xtensa xoops;
+	struct sof_ipc_panic_info panic_info;
+	u32 stack[BDW_STACK_DUMP_SIZE];
+	u32 status, panic;
+
+	/* now try generic SOF status messages */
+	status = snd_sof_dsp_read(sdev, BDW_DSP_BAR, SHIM_IPCD);
+	panic = snd_sof_dsp_read(sdev, BDW_DSP_BAR, SHIM_IPCX);
+	bdw_get_registers(sdev, &xoops, &panic_info, stack,
+			  BDW_STACK_DUMP_SIZE);
+	snd_sof_get_status(sdev, status, panic, &xoops, &panic_info, stack,
+			   BDW_STACK_DUMP_SIZE);
+}
+
+/*
+ * IPC Doorbell IRQ handler and thread.
+ */
+
+static irqreturn_t bdw_irq_handler(int irq, void *context)
+{
+	struct snd_sof_dev *sdev = context;
+	u32 isr;
+	int ret = IRQ_NONE;
+
+	/* Interrupt arrived, check src */
+	isr = snd_sof_dsp_read(sdev, BDW_DSP_BAR, SHIM_ISRX);
+	if (isr & (SHIM_ISRX_DONE | SHIM_ISRX_BUSY))
+		ret = IRQ_WAKE_THREAD;
+
+	return ret;
+}
+
+static irqreturn_t bdw_irq_thread(int irq, void *context)
+{
+	struct snd_sof_dev *sdev = context;
+	u32 ipcx, ipcd, imrx;
+
+	imrx = snd_sof_dsp_read64(sdev, BDW_DSP_BAR, SHIM_IMRX);
+	ipcx = snd_sof_dsp_read(sdev, BDW_DSP_BAR, SHIM_IPCX);
+
+	/* reply message from DSP */
+	if (ipcx & SHIM_IPCX_DONE &&
+	    !(imrx & SHIM_IMRX_DONE)) {
+		/* Mask Done interrupt before return */
+		snd_sof_dsp_update_bits_unlocked(sdev, BDW_DSP_BAR,
+						 SHIM_IMRX, SHIM_IMRX_DONE,
+						 SHIM_IMRX_DONE);
+
+		/*
+		 * handle immediate reply from DSP core. If the msg is
+		 * found, set done bit in cmd_done which is called at the
+		 * end of message processing function, else set it here
+		 * because the done bit can't be set in cmd_done function
+		 * which is triggered by msg
+		 */
+		bdw_get_reply(sdev);
+		snd_sof_ipc_reply(sdev, ipcx);
+
+		bdw_dsp_done(sdev);
+	}
+
+	ipcd = snd_sof_dsp_read(sdev, BDW_DSP_BAR, SHIM_IPCD);
+
+	/* new message from DSP */
+	if (ipcd & SHIM_IPCD_BUSY &&
+	    !(imrx & SHIM_IMRX_BUSY)) {
+		/* Mask Busy interrupt before return */
+		snd_sof_dsp_update_bits_unlocked(sdev, BDW_DSP_BAR,
+						 SHIM_IMRX, SHIM_IMRX_BUSY,
+						 SHIM_IMRX_BUSY);
+
+		/* Handle messages from DSP Core */
+		if ((ipcd & SOF_IPC_PANIC_MAGIC_MASK) == SOF_IPC_PANIC_MAGIC) {
+			snd_sof_dsp_panic(sdev, BDW_PANIC_OFFSET(ipcx) +
+					  MBOX_OFFSET);
+		} else {
+			snd_sof_ipc_msgs_rx(sdev);
+		}
+
+		bdw_host_done(sdev);
+	}
+
+	return IRQ_HANDLED;
+}
+
+/*
+ * IPC Firmware ready.
+ */
+static void bdw_get_windows(struct snd_sof_dev *sdev)
+{
+	struct sof_ipc_window_elem *elem;
+	u32 outbox_offset = 0;
+	u32 stream_offset = 0;
+	u32 inbox_offset = 0;
+	u32 outbox_size = 0;
+	u32 stream_size = 0;
+	u32 inbox_size = 0;
+	int i;
+
+	if (!sdev->info_window) {
+		dev_err(sdev->dev, "error: have no window info\n");
+		return;
+	}
+
+	for (i = 0; i < sdev->info_window->num_windows; i++) {
+		elem = &sdev->info_window->window[i];
+
+		switch (elem->type) {
+		case SOF_IPC_REGION_UPBOX:
+			inbox_offset = elem->offset + MBOX_OFFSET;
+			inbox_size = elem->size;
+			snd_sof_debugfs_io_item(sdev,
+						sdev->bar[BDW_DSP_BAR] +
+						inbox_offset,
+						elem->size, "inbox",
+						SOF_DEBUGFS_ACCESS_D0_ONLY);
+			break;
+		case SOF_IPC_REGION_DOWNBOX:
+			outbox_offset = elem->offset + MBOX_OFFSET;
+			outbox_size = elem->size;
+			snd_sof_debugfs_io_item(sdev,
+						sdev->bar[BDW_DSP_BAR] +
+						outbox_offset,
+						elem->size, "outbox",
+						SOF_DEBUGFS_ACCESS_D0_ONLY);
+			break;
+		case SOF_IPC_REGION_TRACE:
+			snd_sof_debugfs_io_item(sdev,
+						sdev->bar[BDW_DSP_BAR] +
+						elem->offset +
+						MBOX_OFFSET,
+						elem->size, "etrace",
+						SOF_DEBUGFS_ACCESS_D0_ONLY);
+			break;
+		case SOF_IPC_REGION_DEBUG:
+			snd_sof_debugfs_io_item(sdev,
+						sdev->bar[BDW_DSP_BAR] +
+						elem->offset +
+						MBOX_OFFSET,
+						elem->size, "debug",
+						SOF_DEBUGFS_ACCESS_D0_ONLY);
+			break;
+		case SOF_IPC_REGION_STREAM:
+			stream_offset = elem->offset + MBOX_OFFSET;
+			stream_size = elem->size;
+			snd_sof_debugfs_io_item(sdev,
+						sdev->bar[BDW_DSP_BAR] +
+						stream_offset,
+						elem->size, "stream",
+						SOF_DEBUGFS_ACCESS_D0_ONLY);
+			break;
+		case SOF_IPC_REGION_REGS:
+			snd_sof_debugfs_io_item(sdev,
+						sdev->bar[BDW_DSP_BAR] +
+						elem->offset +
+						MBOX_OFFSET,
+						elem->size, "regs",
+						SOF_DEBUGFS_ACCESS_D0_ONLY);
+			break;
+		case SOF_IPC_REGION_EXCEPTION:
+			sdev->dsp_oops_offset = elem->offset + MBOX_OFFSET;
+			snd_sof_debugfs_io_item(sdev,
+						sdev->bar[BDW_DSP_BAR] +
+						elem->offset +
+						MBOX_OFFSET,
+						elem->size, "exception",
+						SOF_DEBUGFS_ACCESS_D0_ONLY);
+			break;
+		default:
+			dev_err(sdev->dev, "error: get illegal window info\n");
+			return;
+		}
+	}
+
+	if (outbox_size == 0 || inbox_size == 0) {
+		dev_err(sdev->dev, "error: get illegal mailbox window\n");
+		return;
+	}
+
+	snd_sof_dsp_mailbox_init(sdev, inbox_offset, inbox_size,
+				 outbox_offset, outbox_size);
+	sdev->stream_box.offset = stream_offset;
+	sdev->stream_box.size = stream_size;
+
+	dev_dbg(sdev->dev, " mailbox upstream 0x%x - size 0x%x\n",
+		inbox_offset, inbox_size);
+	dev_dbg(sdev->dev, " mailbox downstream 0x%x - size 0x%x\n",
+		outbox_offset, outbox_size);
+	dev_dbg(sdev->dev, " stream region 0x%x - size 0x%x\n",
+		stream_offset, stream_size);
+}
+
+/* check for ABI compatibility and create memory windows on first boot */
+static int bdw_fw_ready(struct snd_sof_dev *sdev, u32 msg_id)
+{
+	struct sof_ipc_fw_ready *fw_ready = &sdev->fw_ready;
+	u32 offset;
+	int ret;
+
+	/* mailbox must be on 4k boundary */
+	offset = MBOX_OFFSET;
+
+	dev_dbg(sdev->dev, "ipc: DSP is ready 0x%8.8x offset %d\n",
+		msg_id, offset);
+
+	/* no need to re-check version/ABI for subsequent boots */
+	if (!sdev->first_boot)
+		return 0;
+
+	/* copy data from the DSP FW ready offset */
+	sof_block_read(sdev, sdev->mmio_bar, offset, fw_ready,
+		       sizeof(*fw_ready));
+
+	snd_sof_dsp_mailbox_init(sdev, fw_ready->dspbox_offset,
+				 fw_ready->dspbox_size,
+				 fw_ready->hostbox_offset,
+				 fw_ready->hostbox_size);
+
+	/* make sure ABI version is compatible */
+	ret = snd_sof_ipc_valid(sdev);
+	if (ret < 0)
+		return ret;
+
+	/* now check for extended data */
+	snd_sof_fw_parse_ext_data(sdev, sdev->mmio_bar, MBOX_OFFSET +
+				  sizeof(struct sof_ipc_fw_ready));
+
+	bdw_get_windows(sdev);
+
+	return 0;
+}
+
+/*
+ * IPC Mailbox IO
+ */
+
+static int bdw_send_msg(struct snd_sof_dev *sdev, struct snd_sof_ipc_msg *msg)
+{
+	/* send the message */
+	sof_mailbox_write(sdev, sdev->host_box.offset, msg->msg_data,
+			  msg->msg_size);
+	snd_sof_dsp_write(sdev, BDW_DSP_BAR, SHIM_IPCX, SHIM_IPCX_BUSY);
+
+	return 0;
+}
+
+static void bdw_get_reply(struct snd_sof_dev *sdev)
+{
+	struct snd_sof_ipc_msg *msg = sdev->msg;
+	struct sof_ipc_reply reply;
+	unsigned long flags;
+	int ret = 0;
+
+	/*
+	 * Sometimes, there is unexpected reply ipc arriving. The reply
+	 * ipc belongs to none of the ipcs sent from driver.
+	 * In this case, the driver must ignore the ipc.
+	 */
+	if (!msg) {
+		dev_warn(sdev->dev, "unexpected ipc interrupt raised!\n");
+		return;
+	}
+
+	/* get reply */
+	sof_mailbox_read(sdev, sdev->host_box.offset, &reply, sizeof(reply));
+
+	spin_lock_irqsave(&sdev->ipc_lock, flags);
+
+	if (reply.error < 0) {
+		memcpy(msg->reply_data, &reply, sizeof(reply));
+		ret = reply.error;
+	} else {
+		/* reply correct size ? */
+		if (reply.hdr.size != msg->reply_size) {
+			dev_err(sdev->dev, "error: reply expected %zu got %u bytes\n",
+				msg->reply_size, reply.hdr.size);
+			ret = -EINVAL;
+		}
+
+		/* read the message */
+		if (msg->reply_size > 0)
+			sof_mailbox_read(sdev, sdev->host_box.offset,
+					 msg->reply_data, msg->reply_size);
+	}
+
+	msg->reply_error = ret;
+
+	spin_unlock_irqrestore(&sdev->ipc_lock, flags);
+}
+
+static void bdw_host_done(struct snd_sof_dev *sdev)
+{
+	/* clear BUSY bit and set DONE bit - accept new messages */
+	snd_sof_dsp_update_bits_unlocked(sdev, BDW_DSP_BAR, SHIM_IPCD,
+					 SHIM_IPCD_BUSY | SHIM_IPCD_DONE,
+					 SHIM_IPCD_DONE);
+
+	/* unmask busy interrupt */
+	snd_sof_dsp_update_bits_unlocked(sdev, BDW_DSP_BAR, SHIM_IMRX,
+					 SHIM_IMRX_BUSY, 0);
+}
+
+static void bdw_dsp_done(struct snd_sof_dev *sdev)
+{
+	/* clear DONE bit - tell DSP we have completed */
+	snd_sof_dsp_update_bits_unlocked(sdev, BDW_DSP_BAR, SHIM_IPCX,
+					 SHIM_IPCX_DONE, 0);
+
+	/* unmask Done interrupt */
+	snd_sof_dsp_update_bits_unlocked(sdev, BDW_DSP_BAR, SHIM_IMRX,
+					 SHIM_IMRX_DONE, 0);
+}
+
+/*
+ * Probe and remove.
+ */
+static int bdw_probe(struct snd_sof_dev *sdev)
+{
+	struct snd_sof_pdata *pdata = sdev->pdata;
+	const struct sof_dev_desc *desc = pdata->desc;
+	struct platform_device *pdev =
+		container_of(sdev->dev, struct platform_device, dev);
+	struct resource *mmio;
+	u32 base, size;
+	int ret;
+
+	/* LPE base */
+	mmio = platform_get_resource(pdev, IORESOURCE_MEM,
+				     desc->resindex_lpe_base);
+	if (mmio) {
+		base = mmio->start;
+		size = resource_size(mmio);
+	} else {
+		dev_err(sdev->dev, "error: failed to get LPE base at idx %d\n",
+			desc->resindex_lpe_base);
+		return -EINVAL;
+	}
+
+	dev_dbg(sdev->dev, "LPE PHY base at 0x%x size 0x%x", base, size);
+	sdev->bar[BDW_DSP_BAR] = devm_ioremap(sdev->dev, base, size);
+	if (!sdev->bar[BDW_DSP_BAR]) {
+		dev_err(sdev->dev,
+			"error: failed to ioremap LPE base 0x%x size 0x%x\n",
+			base, size);
+		return -ENODEV;
+	}
+	dev_dbg(sdev->dev, "LPE VADDR %p\n", sdev->bar[BDW_DSP_BAR]);
+
+	/* TODO: add offsets */
+	sdev->mmio_bar = BDW_DSP_BAR;
+	sdev->mailbox_bar = BDW_DSP_BAR;
+
+	/* PCI base */
+	mmio = platform_get_resource(pdev, IORESOURCE_MEM,
+				     desc->resindex_pcicfg_base);
+	if (mmio) {
+		base = mmio->start;
+		size = resource_size(mmio);
+	} else {
+		dev_err(sdev->dev, "error: failed to get PCI base at idx %d\n",
+			desc->resindex_pcicfg_base);
+		return -ENODEV;
+	}
+
+	dev_dbg(sdev->dev, "PCI base at 0x%x size 0x%x", base, size);
+	sdev->bar[BDW_PCI_BAR] = devm_ioremap(sdev->dev, base, size);
+	if (!sdev->bar[BDW_PCI_BAR]) {
+		dev_err(sdev->dev,
+			"error: failed to ioremap PCI base 0x%x size 0x%x\n",
+			base, size);
+		return -ENODEV;
+	}
+	dev_dbg(sdev->dev, "PCI VADDR %p\n", sdev->bar[BDW_PCI_BAR]);
+
+	/* register our IRQ */
+	sdev->ipc_irq = platform_get_irq(pdev, desc->irqindex_host_ipc);
+	if (sdev->ipc_irq < 0) {
+		dev_err(sdev->dev, "error: failed to get IRQ at index %d\n",
+			desc->irqindex_host_ipc);
+		return sdev->ipc_irq;
+	}
+
+	dev_dbg(sdev->dev, "using IRQ %d\n", sdev->ipc_irq);
+	ret = devm_request_threaded_irq(sdev->dev, sdev->ipc_irq,
+					bdw_irq_handler, bdw_irq_thread,
+					IRQF_SHARED, "AudioDSP", sdev);
+	if (ret < 0) {
+		dev_err(sdev->dev, "error: failed to register IRQ %d\n",
+			sdev->ipc_irq);
+		return ret;
+	}
+
+	/* enable the DSP SHIM */
+	ret = bdw_set_dsp_D0(sdev);
+	if (ret < 0) {
+		dev_err(sdev->dev, "error: failed to set DSP D0\n");
+		return ret;
+	}
+
+	/* DSP DMA can only access low 31 bits of host memory */
+	ret = dma_coerce_mask_and_coherent(sdev->dev, DMA_BIT_MASK(31));
+	if (ret < 0) {
+		dev_err(sdev->dev, "error: failed to set DMA mask %d\n", ret);
+		return ret;
+	}
+
+	/* set default mailbox */
+	snd_sof_dsp_mailbox_init(sdev, MBOX_OFFSET, MBOX_SIZE, 0, 0);
+
+	return ret;
+}
+
+/* Broadwell DAIs */
+static struct snd_soc_dai_driver bdw_dai[] = {
+{
+	.name = "ssp0-port",
+},
+{
+	.name = "ssp1-port",
+},
+};
+
+/* broadwell ops */
+const struct snd_sof_dsp_ops sof_bdw_ops = {
+	/*Device init */
+	.probe          = bdw_probe,
+
+	/* DSP Core Control */
+	.run            = bdw_run,
+	.reset          = bdw_reset,
+
+	/* Register IO */
+	.write		= sof_io_write,
+	.read		= sof_io_read,
+	.write64	= sof_io_write64,
+	.read64		= sof_io_read64,
+
+	/* Block IO */
+	.block_read	= sof_block_read,
+	.block_write	= sof_block_write,
+
+	/* ipc */
+	.send_msg	= bdw_send_msg,
+	.fw_ready	= bdw_fw_ready,
+
+	.ipc_msg_data	= intel_ipc_msg_data,
+	.ipc_pcm_params	= intel_ipc_pcm_params,
+
+	/* debug */
+	.debug_map  = bdw_debugfs,
+	.debug_map_count    = ARRAY_SIZE(bdw_debugfs),
+	.dbg_dump   = bdw_dump,
+
+	/* stream callbacks */
+	.pcm_open	= intel_pcm_open,
+	.pcm_close	= intel_pcm_close,
+
+	/* Module loading */
+	.load_module    = snd_sof_parse_module_memcpy,
+
+	/*Firmware loading */
+	.load_firmware	= snd_sof_load_firmware_memcpy,
+
+	/* DAI drivers */
+	.drv = bdw_dai,
+	.num_drv = ARRAY_SIZE(bdw_dai)
+};
+EXPORT_SYMBOL(sof_bdw_ops);
+
+const struct sof_intel_dsp_desc bdw_chip_info = {
+	.cores_num = 1,
+	.cores_mask = 1,
+};
+EXPORT_SYMBOL(bdw_chip_info);
+
+MODULE_LICENSE("Dual BSD/GPL");
-- 
2.17.1