[J-u-boot.git] / drivers / remoteproc / ti_k3_dsp_rproc.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Texas Instruments' K3 DSP Remoteproc driver
 *
 * Copyright (C) 2018-2020 Texas Instruments Incorporated - https://www.ti.com/
 *	Lokesh Vutla <[email protected]>
 *	Suman Anna <[email protected]>
 */

#include <dm.h>
#include <log.h>
#include <malloc.h>
#include <remoteproc.h>
#include <errno.h>
#include <clk.h>
#include <reset.h>
#include <asm/io.h>
#include <power-domain.h>
#include <dm/device_compat.h>
#include <linux/err.h>
#include <linux/sizes.h>
#include <linux/soc/ti/ti_sci_protocol.h>
#include "ti_sci_proc.h"
#include <mach/security.h>

#define KEYSTONE_RPROC_LOCAL_ADDRESS_MASK	(SZ_16M - 1)

/**
 * struct k3_dsp_mem - internal memory structure
 * @cpu_addr: MPU virtual address of the memory region
 * @bus_addr: Bus address used to access the memory region
 * @dev_addr: Device address from remoteproc view
 * @size: Size of the memory region
 */
struct k3_dsp_mem {
	void __iomem *cpu_addr;
	phys_addr_t bus_addr;
	phys_addr_t dev_addr;
	size_t size;
};

/**
 * struct k3_dsp_boot_data - internal data structure used for boot
 * @boot_align_addr: Boot vector address alignment granularity
 * @uses_lreset: Flag to denote the need for local reset management
 */
struct k3_dsp_boot_data {
	u32 boot_align_addr;
	bool uses_lreset;
};

/**
 * struct k3_dsp_privdata - Structure representing Remote processor data.
 * @rproc_rst:		rproc reset control data
 * @tsp:		Pointer to TISCI proc contrl handle
 * @data:		Pointer to DSP specific boot data structure
 * @mem:		Array of available memories
 * @num_mem:		Number of available memories
 * @in_use: flag to tell if the core is already in use.
 */
struct k3_dsp_privdata {
	struct reset_ctl dsp_rst;
	struct ti_sci_proc tsp;
	struct k3_dsp_boot_data *data;
	struct k3_dsp_mem *mem;
	int num_mems;
	bool in_use;
};

/*
 * The C66x DSP cores have a local reset that affects only the CPU, and a
 * generic module reset that powers on the device and allows the DSP internal
 * memories to be accessed while the local reset is asserted. This function is
 * used to release the global reset on C66x DSPs to allow loading into the DSP
 * internal RAMs. This helper function is invoked in k3_dsp_load() before any
 * actual firmware loading and is undone only in k3_dsp_stop(). The local reset
 * on C71x cores is a no-op and the global reset cannot be released on C71x
 * cores until after the firmware images are loaded, so this function does
 * nothing for C71x cores.
 */
static int k3_dsp_prepare(struct udevice *dev)
{
	struct k3_dsp_privdata *dsp = dev_get_priv(dev);
	struct k3_dsp_boot_data *data = dsp->data;
	int ret;

	/* local reset is no-op on C71x processors */
	if (!data->uses_lreset)
		return 0;

	ret = ti_sci_proc_power_domain_on(&dsp->tsp);
	if (ret)
		dev_err(dev, "cannot enable internal RAM loading, ret = %d\n",
			ret);

	return ret;
}

/*
 * This function is the counterpart to k3_dsp_prepare() and is used to assert
 * the global reset on C66x DSP cores (no-op for C71x DSP cores). This completes
 * the second step of powering down the C66x DSP cores. The cores themselves
 * are halted through the local reset in first step. This function is invoked
 * in k3_dsp_stop() after the local reset is asserted.
 */
static int k3_dsp_unprepare(struct udevice *dev)
{
	struct k3_dsp_privdata *dsp = dev_get_priv(dev);
	struct k3_dsp_boot_data *data = dsp->data;

	/* local reset is no-op on C71x processors */
	if (!data->uses_lreset)
		return 0;

	return ti_sci_proc_power_domain_off(&dsp->tsp);
}

/**
 * k3_dsp_load() - Load up the Remote processor image
 * @dev:	rproc device pointer
 * @addr:	Address at which image is available
 * @size:	size of the image
 *
 * Return: 0 if all goes good, else appropriate error message.
 */
static int k3_dsp_load(struct udevice *dev, ulong addr, ulong size)
{
	struct k3_dsp_privdata *dsp = dev_get_priv(dev);
	struct k3_dsp_boot_data *data = dsp->data;
	u32 boot_vector;
	void *image_addr = (void *)addr;
	int ret;

	if (dsp->in_use) {
		dev_err(dev,
			"Invalid op: Trying to load/start on already running core %d\n",
			dsp->tsp.proc_id);
		return -EINVAL;
	}

	dev_dbg(dev, "%s addr = 0x%lx, size = 0x%lx\n", __func__, addr, size);
	ret = ti_sci_proc_request(&dsp->tsp);
	if (ret)
		return ret;

	ret = k3_dsp_prepare(dev);
	if (ret) {
		dev_err(dev, "DSP prepare failed for core %d\n",
			dsp->tsp.proc_id);
		goto proc_release;
	}

	ti_secure_image_post_process(&image_addr, &size);

	ret = rproc_elf_load_image(dev, addr, size);
	if (ret < 0) {
		dev_err(dev, "Loading elf failed %d\n", ret);
		goto unprepare;
	}

	boot_vector = rproc_elf_get_boot_addr(dev, addr);
	if (boot_vector & (data->boot_align_addr - 1)) {
		ret = -EINVAL;
		dev_err(dev, "Boot vector 0x%x not aligned on 0x%x boundary\n",
			boot_vector, data->boot_align_addr);
		goto proc_release;
	}

	dev_dbg(dev, "%s: Boot vector = 0x%x\n", __func__, boot_vector);

	ret = ti_sci_proc_set_config(&dsp->tsp, boot_vector, 0, 0);
unprepare:
	if (ret)
		k3_dsp_unprepare(dev);
proc_release:
	ti_sci_proc_release(&dsp->tsp);
	return ret;
}

/**
 * k3_dsp_start() - Start the remote processor
 * @dev:	rproc device pointer
 *
 * Return: 0 if all went ok, else return appropriate error
 */
static int k3_dsp_start(struct udevice *dev)
{
	struct k3_dsp_privdata *dsp = dev_get_priv(dev);
	struct k3_dsp_boot_data *data = dsp->data;
	int ret;

	dev_dbg(dev, "%s\n", __func__);

	ret = ti_sci_proc_request(&dsp->tsp);
	if (ret)
		return ret;

	if (!data->uses_lreset) {
		ret = ti_sci_proc_power_domain_on(&dsp->tsp);
		if (ret)
			goto proc_release;
	}

	ret = reset_deassert(&dsp->dsp_rst);
	if (ret) {
		if (!data->uses_lreset)
			ti_sci_proc_power_domain_off(&dsp->tsp);
	}

	dsp->in_use = true;
proc_release:
	ti_sci_proc_release(&dsp->tsp);

	return ret;
}

static int k3_dsp_stop(struct udevice *dev)
{
	struct k3_dsp_privdata *dsp = dev_get_priv(dev);

	dev_dbg(dev, "%s\n", __func__);

	dsp->in_use = false;
	ti_sci_proc_request(&dsp->tsp);
	reset_assert(&dsp->dsp_rst);
	ti_sci_proc_power_domain_off(&dsp->tsp);
	ti_sci_proc_release(&dsp->tsp);

	return 0;
}

/**
 * k3_dsp_init() - Initialize the remote processor
 * @dev:	rproc device pointer
 *
 * Return: 0 if all went ok, else return appropriate error
 */
static int k3_dsp_init(struct udevice *dev)
{
	dev_dbg(dev, "%s\n", __func__);

	return 0;
}

static int k3_dsp_reset(struct udevice *dev)
{
	dev_dbg(dev, "%s\n", __func__);

	return 0;
}

static void *k3_dsp_da_to_va(struct udevice *dev, ulong da, ulong len)
{
	struct k3_dsp_privdata *dsp = dev_get_priv(dev);
	phys_addr_t bus_addr, dev_addr;
	void __iomem *va = NULL;
	size_t size;
	u32 offset;
	int i;

	dev_dbg(dev, "%s\n", __func__);

	if (len <= 0)
		return NULL;

	for (i = 0; i < dsp->num_mems; i++) {
		bus_addr = dsp->mem[i].bus_addr;
		dev_addr = dsp->mem[i].dev_addr;
		size = dsp->mem[i].size;

		if (da >= dev_addr && ((da + len) <= (dev_addr + size))) {
			offset = da - dev_addr;
			va = dsp->mem[i].cpu_addr + offset;
			return (__force void *)va;
		}

		if (da >= bus_addr && (da + len) <= (bus_addr + size)) {
			offset = da - bus_addr;
			va = dsp->mem[i].cpu_addr + offset;
			return (__force void *)va;
		}
	}

	/* Assume it is DDR region and return da */
	return map_physmem(da, len, MAP_NOCACHE);
}

static const struct dm_rproc_ops k3_dsp_ops = {
	.init = k3_dsp_init,
	.load = k3_dsp_load,
	.start = k3_dsp_start,
	.stop = k3_dsp_stop,
	.reset = k3_dsp_reset,
	.device_to_virt = k3_dsp_da_to_va,
};

static int ti_sci_proc_of_to_priv(struct udevice *dev, struct ti_sci_proc *tsp)
{
	u32 ids[2];
	int ret;

	dev_dbg(dev, "%s\n", __func__);

	tsp->sci = ti_sci_get_by_phandle(dev, "ti,sci");
	if (IS_ERR(tsp->sci)) {
		dev_err(dev, "ti_sci get failed: %ld\n", PTR_ERR(tsp->sci));
		return PTR_ERR(tsp->sci);
	}

	ret = dev_read_u32_array(dev, "ti,sci-proc-ids", ids, 2);
	if (ret) {
		dev_err(dev, "Proc IDs not populated %d\n", ret);
		return ret;
	}

	tsp->ops = &tsp->sci->ops.proc_ops;
	tsp->proc_id = ids[0];
	tsp->host_id = ids[1];
	tsp->dev_id = dev_read_u32_default(dev, "ti,sci-dev-id",
					   TI_SCI_RESOURCE_NULL);
	if (tsp->dev_id == TI_SCI_RESOURCE_NULL) {
		dev_err(dev, "Device ID not populated %d\n", ret);
		return -ENODEV;
	}

	return 0;
}

static int k3_dsp_of_get_memories(struct udevice *dev)
{
	static const char * const mem_names[] = {"l2sram", "l1pram", "l1dram"};
	struct k3_dsp_privdata *dsp = dev_get_priv(dev);
	int i;

	dev_dbg(dev, "%s\n", __func__);

	dsp->num_mems = ARRAY_SIZE(mem_names);
	dsp->mem = calloc(dsp->num_mems, sizeof(*dsp->mem));
	if (!dsp->mem)
		return -ENOMEM;

	for (i = 0; i < dsp->num_mems; i++) {
		/* C71 cores only have a L1P Cache, there are no L1P SRAMs */
		if (((device_is_compatible(dev, "ti,j721e-c71-dsp")) ||
		    (device_is_compatible(dev, "ti,j721s2-c71-dsp")) ||
		    (device_is_compatible(dev, "ti,am62a-c7xv-dsp"))) &&
		    !strcmp(mem_names[i], "l1pram")) {
			dsp->mem[i].bus_addr = FDT_ADDR_T_NONE;
			dsp->mem[i].dev_addr = FDT_ADDR_T_NONE;
			dsp->mem[i].cpu_addr = NULL;
			dsp->mem[i].size = 0;
			continue;
		}
		if (device_is_compatible(dev, "ti,am62a-c7xv-dsp") &&
		    !strcmp(mem_names[i], "l1dram")) {
			dsp->mem[i].bus_addr = FDT_ADDR_T_NONE;
			dsp->mem[i].dev_addr = FDT_ADDR_T_NONE;
			dsp->mem[i].cpu_addr = NULL;
			dsp->mem[i].size = 0;
			continue;
		}
		dsp->mem[i].bus_addr = dev_read_addr_size_name(dev, mem_names[i],
					  (fdt_addr_t *)&dsp->mem[i].size);
		if (dsp->mem[i].bus_addr == FDT_ADDR_T_NONE) {
			dev_err(dev, "%s bus address not found\n", mem_names[i]);
			return -EINVAL;
		}
		dsp->mem[i].cpu_addr = map_physmem(dsp->mem[i].bus_addr,
						   dsp->mem[i].size,
						   MAP_NOCACHE);
		dsp->mem[i].dev_addr = dsp->mem[i].bus_addr &
					KEYSTONE_RPROC_LOCAL_ADDRESS_MASK;

		dev_dbg(dev, "memory %8s: bus addr %pa size 0x%zx va %p da %pa\n",
			mem_names[i], &dsp->mem[i].bus_addr,
			dsp->mem[i].size, dsp->mem[i].cpu_addr,
			&dsp->mem[i].dev_addr);
	}

	return 0;
}

/**
 * k3_of_to_priv() - generate private data from device tree
 * @dev:	corresponding k3 dsp processor device
 * @dsp:	pointer to driver specific private data
 *
 * Return: 0 if all goes good, else appropriate error message.
 */
static int k3_dsp_of_to_priv(struct udevice *dev, struct k3_dsp_privdata *dsp)
{
	int ret;

	dev_dbg(dev, "%s\n", __func__);

	ret = reset_get_by_index(dev, 0, &dsp->dsp_rst);
	if (ret) {
		dev_err(dev, "reset_get() failed: %d\n", ret);
		return ret;
	}

	ret = ti_sci_proc_of_to_priv(dev, &dsp->tsp);
	if (ret)
		return ret;

	ret =  k3_dsp_of_get_memories(dev);
	if (ret)
		return ret;

	dsp->data = (struct k3_dsp_boot_data *)dev_get_driver_data(dev);

	return 0;
}

/**
 * k3_dsp_probe() - Basic probe
 * @dev:	corresponding k3 remote processor device
 *
 * Return: 0 if all goes good, else appropriate error message.
 */
static int k3_dsp_probe(struct udevice *dev)
{
	struct k3_dsp_privdata *dsp;
	int ret;

	dev_dbg(dev, "%s\n", __func__);

	dsp = dev_get_priv(dev);

	ret = k3_dsp_of_to_priv(dev, dsp);
	if (ret) {
		dev_dbg(dev, "%s: Probe failed with error %d\n", __func__, ret);
		return ret;
	}

	/*
	 * The DSP local resets are deasserted by default on Power-On-Reset.
	 * Assert the local resets to ensure the DSPs don't execute bogus code
	 * in .load() callback when the module reset is released to support
	 * internal memory loading. This is needed for C66x DSPs, and is a
	 * no-op on C71x DSPs.
	 */
	reset_assert(&dsp->dsp_rst);

	dev_dbg(dev, "Remoteproc successfully probed\n");

	return 0;
}

static int k3_dsp_remove(struct udevice *dev)
{
	struct k3_dsp_privdata *dsp = dev_get_priv(dev);

	free(dsp->mem);

	return 0;
}

static const struct k3_dsp_boot_data c66_data = {
	.boot_align_addr = SZ_1K,
	.uses_lreset = true,
};

static const struct k3_dsp_boot_data c71_data = {
	.boot_align_addr = SZ_2M,
	.uses_lreset = false,
};

static const struct udevice_id k3_dsp_ids[] = {
	{ .compatible = "ti,j721e-c66-dsp", .data = (ulong)&c66_data, },
	{ .compatible = "ti,j721e-c71-dsp", .data = (ulong)&c71_data, },
	{ .compatible = "ti,j721s2-c71-dsp", .data = (ulong)&c71_data, },
	{ .compatible = "ti,am62a-c7xv-dsp", .data = (ulong)&c71_data, },
	{}
};

U_BOOT_DRIVER(k3_dsp) = {
	.name = "k3_dsp",
	.of_match = k3_dsp_ids,
	.id = UCLASS_REMOTEPROC,
	.ops = &k3_dsp_ops,
	.probe = k3_dsp_probe,
	.remove = k3_dsp_remove,
	.priv_auto	= sizeof(struct k3_dsp_privdata),
};
Commit	Line	Data
ab827b38 LV	1	// SPDX-License-Identifier: GPL-2.0+
	2	/*
	3	* Texas Instruments' K3 DSP Remoteproc driver
	4	*
a94a4071	5	* Copyright (C) 2018-2020 Texas Instruments Incorporated - https://www.ti.com/
ab827b38	6	* Lokesh Vutla <[email protected]>
42005817	7	* Suman Anna <[email protected]>
ab827b38 LV	8	*/
ab827b38 LV	9
ab827b38	10	#include <dm.h>
f7ae49fc	11	#include <log.h>
336d4615	12	#include <malloc.h>
ab827b38 LV	13	#include <remoteproc.h>
	14	#include <errno.h>
	15	#include <clk.h>
	16	#include <reset.h>
	17	#include <asm/io.h>
	18	#include <power-domain.h>
336d4615	19	#include <dm/device_compat.h>
61b29b82	20	#include <linux/err.h>
1e53d5b5	21	#include <linux/sizes.h>
ab827b38 LV	22	#include <linux/soc/ti/ti_sci_protocol.h>
ab827b38 LV	23	#include "ti_sci_proc.h"
5b5bb51a	24	#include <mach/security.h>
ab827b38 LV	25
	26	#define KEYSTONE_RPROC_LOCAL_ADDRESS_MASK (SZ_16M - 1)
	27
	28	/**
	29	* struct k3_dsp_mem - internal memory structure
	30	* @cpu_addr: MPU virtual address of the memory region
	31	* @bus_addr: Bus address used to access the memory region
	32	* @dev_addr: Device address from remoteproc view
	33	* @size: Size of the memory region
	34	*/
	35	struct k3_dsp_mem {
	36	void __iomem *cpu_addr;
	37	phys_addr_t bus_addr;
	38	phys_addr_t dev_addr;
	39	size_t size;
	40	};
	41
1e53d5b5 SA	42	/**
	43	* struct k3_dsp_boot_data - internal data structure used for boot
	44	* @boot_align_addr: Boot vector address alignment granularity
42005817	45	* @uses_lreset: Flag to denote the need for local reset management
1e53d5b5 SA	46	*/
	47	struct k3_dsp_boot_data {
	48	u32 boot_align_addr;
42005817	49	bool uses_lreset;
1e53d5b5 SA	50	};
1e53d5b5 SA	51
ab827b38 LV	52	/**
	53	* struct k3_dsp_privdata - Structure representing Remote processor data.
	54	* @rproc_rst: rproc reset control data
	55	* @tsp: Pointer to TISCI proc contrl handle
1e53d5b5	56	* @data: Pointer to DSP specific boot data structure
ab827b38 LV	57	* @mem: Array of available memories
ab827b38 LV	58	* @num_mem: Number of available memories
34fc1861	59	* @in_use: flag to tell if the core is already in use.
ab827b38 LV	60	*/
	61	struct k3_dsp_privdata {
	62	struct reset_ctl dsp_rst;
	63	struct ti_sci_proc tsp;
1e53d5b5	64	struct k3_dsp_boot_data *data;
ab827b38 LV	65	struct k3_dsp_mem *mem;
ab827b38 LV	66	int num_mems;
34fc1861	67	bool in_use;
ab827b38 LV	68	};
ab827b38 LV	69
42005817 SA	70	/*
	71	* The C66x DSP cores have a local reset that affects only the CPU, and a
	72	* generic module reset that powers on the device and allows the DSP internal
	73	* memories to be accessed while the local reset is asserted. This function is
	74	* used to release the global reset on C66x DSPs to allow loading into the DSP
	75	* internal RAMs. This helper function is invoked in k3_dsp_load() before any
	76	* actual firmware loading and is undone only in k3_dsp_stop(). The local reset
	77	* on C71x cores is a no-op and the global reset cannot be released on C71x
	78	* cores until after the firmware images are loaded, so this function does
	79	* nothing for C71x cores.
	80	*/
	81	static int k3_dsp_prepare(struct udevice *dev)
	82	{
	83	struct k3_dsp_privdata *dsp = dev_get_priv(dev);
	84	struct k3_dsp_boot_data *data = dsp->data;
	85	int ret;
	86
	87	/* local reset is no-op on C71x processors */
	88	if (!data->uses_lreset)
	89	return 0;
	90
	91	ret = ti_sci_proc_power_domain_on(&dsp->tsp);
	92	if (ret)
	93	dev_err(dev, "cannot enable internal RAM loading, ret = %d\n",
	94	ret);
	95
	96	return ret;
	97	}
	98
	99	/*
	100	* This function is the counterpart to k3_dsp_prepare() and is used to assert
	101	* the global reset on C66x DSP cores (no-op for C71x DSP cores). This completes
	102	* the second step of powering down the C66x DSP cores. The cores themselves
	103	* are halted through the local reset in first step. This function is invoked
	104	* in k3_dsp_stop() after the local reset is asserted.
	105	*/
	106	static int k3_dsp_unprepare(struct udevice *dev)
	107	{
	108	struct k3_dsp_privdata *dsp = dev_get_priv(dev);
	109	struct k3_dsp_boot_data *data = dsp->data;
	110
	111	/* local reset is no-op on C71x processors */
	112	if (!data->uses_lreset)
	113	return 0;
	114
	115	return ti_sci_proc_power_domain_off(&dsp->tsp);
	116	}
	117
ab827b38 LV	118	/**
	119	* k3_dsp_load() - Load up the Remote processor image
	120	* @dev: rproc device pointer
	121	* @addr: Address at which image is available
	122	* @size: size of the image
	123	*
	124	* Return: 0 if all goes good, else appropriate error message.
	125	*/
	126	static int k3_dsp_load(struct udevice *dev, ulong addr, ulong size)
	127	{
	128	struct k3_dsp_privdata *dsp = dev_get_priv(dev);
1e53d5b5	129	struct k3_dsp_boot_data *data = dsp->data;
ab827b38	130	u32 boot_vector;
5b5bb51a	131	void image_addr = (void )addr;
ab827b38 LV	132	int ret;
ab827b38 LV	133
34fc1861 UK	134	if (dsp->in_use) {
	135	dev_err(dev,
	136	"Invalid op: Trying to load/start on already running core %d\n",
	137	dsp->tsp.proc_id);
	138	return -EINVAL;
	139	}
	140
ab827b38 LV	141	dev_dbg(dev, "%s addr = 0x%lx, size = 0x%lx\n", __func__, addr, size);
	142	ret = ti_sci_proc_request(&dsp->tsp);
	143	if (ret)
	144	return ret;
	145
42005817 SA	146	ret = k3_dsp_prepare(dev);
	147	if (ret) {
	148	dev_err(dev, "DSP prepare failed for core %d\n",
	149	dsp->tsp.proc_id);
	150	goto proc_release;
	151	}
	152
5b5bb51a MC	153	ti_secure_image_post_process(&image_addr, &size);
5b5bb51a MC	154
ab827b38 LV	155	ret = rproc_elf_load_image(dev, addr, size);
	156	if (ret < 0) {
	157	dev_err(dev, "Loading elf failed %d\n", ret);
42005817	158	goto unprepare;
ab827b38 LV	159	}
	160
	161	boot_vector = rproc_elf_get_boot_addr(dev, addr);
1e53d5b5 SA	162	if (boot_vector & (data->boot_align_addr - 1)) {
	163	ret = -EINVAL;
	164	dev_err(dev, "Boot vector 0x%x not aligned on 0x%x boundary\n",
	165	boot_vector, data->boot_align_addr);
	166	goto proc_release;
	167	}
ab827b38 LV	168
	169	dev_dbg(dev, "%s: Boot vector = 0x%x\n", __func__, boot_vector);
	170
	171	ret = ti_sci_proc_set_config(&dsp->tsp, boot_vector, 0, 0);
42005817 SA	172	unprepare:
	173	if (ret)
	174	k3_dsp_unprepare(dev);
ab827b38 LV	175	proc_release:
	176	ti_sci_proc_release(&dsp->tsp);
	177	return ret;
	178	}
	179
	180	/**
	181	* k3_dsp_start() - Start the remote processor
	182	* @dev: rproc device pointer
	183	*
	184	* Return: 0 if all went ok, else return appropriate error
	185	*/
	186	static int k3_dsp_start(struct udevice *dev)
	187	{
	188	struct k3_dsp_privdata *dsp = dev_get_priv(dev);
42005817	189	struct k3_dsp_boot_data *data = dsp->data;
ab827b38 LV	190	int ret;
	191
	192	dev_dbg(dev, "%s\n", __func__);
	193
	194	ret = ti_sci_proc_request(&dsp->tsp);
	195	if (ret)
	196	return ret;
0020003e	197
42005817 SA	198	if (!data->uses_lreset) {
	199	ret = ti_sci_proc_power_domain_on(&dsp->tsp);
	200	if (ret)
	201	goto proc_release;
	202	}
ab827b38 LV	203
ab827b38 LV	204	ret = reset_deassert(&dsp->dsp_rst);
42005817 SA	205	if (ret) {
	206	if (!data->uses_lreset)
	207	ti_sci_proc_power_domain_off(&dsp->tsp);
	208	}
ab827b38	209
34fc1861	210	dsp->in_use = true;
ab827b38 LV	211	proc_release:
	212	ti_sci_proc_release(&dsp->tsp);
	213
	214	return ret;
	215	}
	216
	217	static int k3_dsp_stop(struct udevice *dev)
	218	{
	219	struct k3_dsp_privdata *dsp = dev_get_priv(dev);
	220
	221	dev_dbg(dev, "%s\n", __func__);
	222
34fc1861	223	dsp->in_use = false;
ab827b38 LV	224	ti_sci_proc_request(&dsp->tsp);
	225	reset_assert(&dsp->dsp_rst);
	226	ti_sci_proc_power_domain_off(&dsp->tsp);
	227	ti_sci_proc_release(&dsp->tsp);
	228
	229	return 0;
	230	}
	231
	232	/**
	233	* k3_dsp_init() - Initialize the remote processor
	234	* @dev: rproc device pointer
	235	*
	236	* Return: 0 if all went ok, else return appropriate error
	237	*/
	238	static int k3_dsp_init(struct udevice *dev)
	239	{
	240	dev_dbg(dev, "%s\n", __func__);
	241
	242	return 0;
	243	}
	244
	245	static int k3_dsp_reset(struct udevice *dev)
	246	{
	247	dev_dbg(dev, "%s\n", __func__);
	248
	249	return 0;
	250	}
	251
	252	static void k3_dsp_da_to_va(struct udevice dev, ulong da, ulong len)
	253	{
	254	struct k3_dsp_privdata *dsp = dev_get_priv(dev);
	255	phys_addr_t bus_addr, dev_addr;
	256	void __iomem *va = NULL;
	257	size_t size;
	258	u32 offset;
	259	int i;
	260
	261	dev_dbg(dev, "%s\n", __func__);
	262
	263	if (len <= 0)
	264	return NULL;
	265
	266	for (i = 0; i < dsp->num_mems; i++) {
	267	bus_addr = dsp->mem[i].bus_addr;
	268	dev_addr = dsp->mem[i].dev_addr;
	269	size = dsp->mem[i].size;
	270
	271	if (da >= dev_addr && ((da + len) <= (dev_addr + size))) {
	272	offset = da - dev_addr;
	273	va = dsp->mem[i].cpu_addr + offset;
	274	return (__force void *)va;
	275	}
	276
	277	if (da >= bus_addr && (da + len) <= (bus_addr + size)) {
	278	offset = da - bus_addr;
	279	va = dsp->mem[i].cpu_addr + offset;
	280	return (__force void *)va;
	281	}
	282	}
	283
	284	/* Assume it is DDR region and return da */
	285	return map_physmem(da, len, MAP_NOCACHE);
	286	}
	287
288	static const struct dm_rproc_ops k3_dsp_ops = {
289	.init = k3_dsp_init,
290	.load = k3_dsp_load,
291	.start = k3_dsp_start,
292	.stop = k3_dsp_stop,
293	.reset = k3_dsp_reset,
294	.device_to_virt = k3_dsp_da_to_va,
295	};
296
297	static int ti_sci_proc_of_to_priv(struct udevice dev, struct ti_sci_proc tsp)
298	{
299	u32 ids[2];
300	int ret;
301
302	dev_dbg(dev, "%s\n", __func__);
303
304	tsp->sci = ti_sci_get_by_phandle(dev, "ti,sci");
305	if (IS_ERR(tsp->sci)) {
306	dev_err(dev, "ti_sci get failed: %ld\n", PTR_ERR(tsp->sci));
307	return PTR_ERR(tsp->sci);
308	}
309
310	ret = dev_read_u32_array(dev, "ti,sci-proc-ids", ids, 2);
311	if (ret) {
312	dev_err(dev, "Proc IDs not populated %d\n", ret);
313	return ret;
314	}
315
316	tsp->ops = &tsp->sci->ops.proc_ops;
317	tsp->proc_id = ids[0];
318	tsp->host_id = ids[1];
319	tsp->dev_id = dev_read_u32_default(dev, "ti,sci-dev-id",
320	TI_SCI_RESOURCE_NULL);
321	if (tsp->dev_id == TI_SCI_RESOURCE_NULL) {
322	dev_err(dev, "Device ID not populated %d\n", ret);
323	return -ENODEV;
324	}
325
326	return 0;
327	}
328
329	static int k3_dsp_of_get_memories(struct udevice *dev)
330	{
331	static const char * const mem_names[] = {"l2sram", "l1pram", "l1dram"};
332	struct k3_dsp_privdata *dsp = dev_get_priv(dev);
333	int i;
334
335	dev_dbg(dev, "%s\n", __func__);
336
337	dsp->num_mems = ARRAY_SIZE(mem_names);
338	dsp->mem = calloc(dsp->num_mems, sizeof(*dsp->mem));
339	if (!dsp->mem)
340	return -ENOMEM;
341
342	for (i = 0; i < dsp->num_mems; i++) {
343	/* C71 cores only have a L1P Cache, there are no L1P SRAMs */
df479dde	344	if (((device_is_compatible(dev, "ti,j721e-c71-dsp")) \|\|
a5366098 HN	345	(device_is_compatible(dev, "ti,j721s2-c71-dsp")) \|\|
a5366098 HN	346	(device_is_compatible(dev, "ti,am62a-c7xv-dsp"))) &&
ab827b38 LV	347	!strcmp(mem_names[i], "l1pram")) {
	348	dsp->mem[i].bus_addr = FDT_ADDR_T_NONE;
	349	dsp->mem[i].dev_addr = FDT_ADDR_T_NONE;
	350	dsp->mem[i].cpu_addr = NULL;
	351	dsp->mem[i].size = 0;
	352	continue;
	353	}
a5366098 HN	354	if (device_is_compatible(dev, "ti,am62a-c7xv-dsp") &&
	355	!strcmp(mem_names[i], "l1dram")) {
	356	dsp->mem[i].bus_addr = FDT_ADDR_T_NONE;
	357	dsp->mem[i].dev_addr = FDT_ADDR_T_NONE;
	358	dsp->mem[i].cpu_addr = NULL;
	359	dsp->mem[i].size = 0;
	360	continue;
	361	}
ab827b38 LV	362	dsp->mem[i].bus_addr = dev_read_addr_size_name(dev, mem_names[i],
	363	(fdt_addr_t *)&dsp->mem[i].size);
	364	if (dsp->mem[i].bus_addr == FDT_ADDR_T_NONE) {
	365	dev_err(dev, "%s bus address not found\n", mem_names[i]);
	366	return -EINVAL;
	367	}
	368	dsp->mem[i].cpu_addr = map_physmem(dsp->mem[i].bus_addr,
	369	dsp->mem[i].size,
	370	MAP_NOCACHE);
	371	dsp->mem[i].dev_addr = dsp->mem[i].bus_addr &
	372	KEYSTONE_RPROC_LOCAL_ADDRESS_MASK;
	373
	374	dev_dbg(dev, "memory %8s: bus addr %pa size 0x%zx va %p da %pa\n",
	375	mem_names[i], &dsp->mem[i].bus_addr,
	376	dsp->mem[i].size, dsp->mem[i].cpu_addr,
	377	&dsp->mem[i].dev_addr);
	378	}
	379
	380	return 0;
	381	}
	382
	383	/**
	384	* k3_of_to_priv() - generate private data from device tree
	385	* @dev: corresponding k3 dsp processor device
	386	* @dsp: pointer to driver specific private data
	387	*
	388	* Return: 0 if all goes good, else appropriate error message.
	389	*/
	390	static int k3_dsp_of_to_priv(struct udevice dev, struct k3_dsp_privdata dsp)
	391	{
	392	int ret;
	393
	394	dev_dbg(dev, "%s\n", __func__);
	395
	396	ret = reset_get_by_index(dev, 0, &dsp->dsp_rst);
	397	if (ret) {
	398	dev_err(dev, "reset_get() failed: %d\n", ret);
	399	return ret;
	400	}
	401
	402	ret = ti_sci_proc_of_to_priv(dev, &dsp->tsp);
	403	if (ret)
	404	return ret;
	405
	406	ret = k3_dsp_of_get_memories(dev);
	407	if (ret)
	408	return ret;
	409
1e53d5b5 SA	410	dsp->data = (struct k3_dsp_boot_data *)dev_get_driver_data(dev);
1e53d5b5 SA	411
ab827b38 LV	412	return 0;
	413	}
	414
	415	/**
	416	* k3_dsp_probe() - Basic probe
	417	* @dev: corresponding k3 remote processor device
	418	*
	419	* Return: 0 if all goes good, else appropriate error message.
	420	*/
	421	static int k3_dsp_probe(struct udevice *dev)
	422	{
	423	struct k3_dsp_privdata *dsp;
	424	int ret;
	425
	426	dev_dbg(dev, "%s\n", __func__);
	427
	428	dsp = dev_get_priv(dev);
	429
	430	ret = k3_dsp_of_to_priv(dev, dsp);
	431	if (ret) {
	432	dev_dbg(dev, "%s: Probe failed with error %d\n", __func__, ret);
	433	return ret;
	434	}
	435
42005817 SA	436	/*
	437	* The DSP local resets are deasserted by default on Power-On-Reset.
	438	* Assert the local resets to ensure the DSPs don't execute bogus code
	439	* in .load() callback when the module reset is released to support
	440	* internal memory loading. This is needed for C66x DSPs, and is a
	441	* no-op on C71x DSPs.
	442	*/
	443	reset_assert(&dsp->dsp_rst);
	444
ab827b38 LV	445	dev_dbg(dev, "Remoteproc successfully probed\n");
	446
	447	return 0;
	448	}
	449
	450	static int k3_dsp_remove(struct udevice *dev)
	451	{
	452	struct k3_dsp_privdata *dsp = dev_get_priv(dev);
	453
	454	free(dsp->mem);
	455
	456	return 0;
	457	}
	458
1e53d5b5 SA	459	static const struct k3_dsp_boot_data c66_data = {
1e53d5b5 SA	460	.boot_align_addr = SZ_1K,
42005817	461	.uses_lreset = true,
1e53d5b5 SA	462	};
	463
	464	static const struct k3_dsp_boot_data c71_data = {
	465	.boot_align_addr = SZ_2M,
42005817	466	.uses_lreset = false,
1e53d5b5 SA	467	};
1e53d5b5 SA	468
ab827b38	469	static const struct udevice_id k3_dsp_ids[] = {
1e53d5b5 SA	470	{ .compatible = "ti,j721e-c66-dsp", .data = (ulong)&c66_data, },
1e53d5b5 SA	471	{ .compatible = "ti,j721e-c71-dsp", .data = (ulong)&c71_data, },
df479dde	472	{ .compatible = "ti,j721s2-c71-dsp", .data = (ulong)&c71_data, },
a5366098	473	{ .compatible = "ti,am62a-c7xv-dsp", .data = (ulong)&c71_data, },
ab827b38 LV	474	{}
	475	};
	476
	477	U_BOOT_DRIVER(k3_dsp) = {
	478	.name = "k3_dsp",
	479	.of_match = k3_dsp_ids,
	480	.id = UCLASS_REMOTEPROC,
	481	.ops = &k3_dsp_ops,
	482	.probe = k3_dsp_probe,
	483	.remove = k3_dsp_remove,
41575d8e	484	.priv_auto = sizeof(struct k3_dsp_privdata),
ab827b38	485	};