remoteproc: Introduce K3 C66 and C71 remoteproc driver
Certain SoCs with K3 architecture have integrated a C66 Corepac DSP subsystem and an advanced C71 DSPs. Introduce a remoteproc driver that that does take care of loading an elf to any of the specified DSPs and start it. Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> Signed-off-by: Suman Anna <s-anna@ti.com>
This commit is contained in:
Lokesh Vutla
Tom Rini
parent
e18fb7dd5c
commit
ab827b3857
@ -52,6 +52,16 @@ config REMOTEPROC_TI_K3_ARM64
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on various TI K3 family of SoCs through the remote processor
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framework.
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config REMOTEPROC_TI_K3_DSP
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bool "TI K3 C66 and C71 remoteproc support"
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select REMOTEPROC
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depends on ARCH_K3
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depends on TI_SCI_PROTOCOL
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help
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Say y here to support TI's C66/C71 remote processor subsystems
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on various TI K3 family of SoCs through the remote processor
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framework.
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config REMOTEPROC_TI_K3_R5F
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bool "TI K3 R5F remoteproc support"
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select REMOTEPROC
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@ -11,5 +11,6 @@ obj-$(CONFIG_K3_SYSTEM_CONTROLLER) += k3_system_controller.o
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obj-$(CONFIG_REMOTEPROC_SANDBOX) += sandbox_testproc.o
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obj-$(CONFIG_REMOTEPROC_STM32_COPRO) += stm32_copro.o
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obj-$(CONFIG_REMOTEPROC_TI_K3_ARM64) += ti_k3_arm64_rproc.o
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obj-$(CONFIG_REMOTEPROC_TI_K3_DSP) += ti_k3_dsp_rproc.o
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obj-$(CONFIG_REMOTEPROC_TI_K3_R5F) += ti_k3_r5f_rproc.o
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obj-$(CONFIG_REMOTEPROC_TI_POWER) += ti_power_proc.o
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354
drivers/remoteproc/ti_k3_dsp_rproc.c
Normal file
354
drivers/remoteproc/ti_k3_dsp_rproc.c
Normal file
@ -0,0 +1,354 @@
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// SPDX-License-Identifier: GPL-2.0+
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/*
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* Texas Instruments' K3 DSP Remoteproc driver
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*
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* Copyright (C) 2018-2019 Texas Instruments Incorporated - http://www.ti.com/
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* Lokesh Vutla <lokeshvutla@ti.com>
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*
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*/
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#include <common.h>
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#include <dm.h>
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#include <remoteproc.h>
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#include <errno.h>
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#include <clk.h>
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#include <reset.h>
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#include <asm/io.h>
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#include <power-domain.h>
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#include <linux/soc/ti/ti_sci_protocol.h>
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#include "ti_sci_proc.h"
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#define KEYSTONE_RPROC_LOCAL_ADDRESS_MASK (SZ_16M - 1)
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/**
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* struct k3_dsp_mem - internal memory structure
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* @cpu_addr: MPU virtual address of the memory region
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* @bus_addr: Bus address used to access the memory region
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* @dev_addr: Device address from remoteproc view
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* @size: Size of the memory region
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*/
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struct k3_dsp_mem {
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void __iomem *cpu_addr;
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phys_addr_t bus_addr;
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phys_addr_t dev_addr;
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size_t size;
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};
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/**
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* struct k3_dsp_privdata - Structure representing Remote processor data.
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* @rproc_rst: rproc reset control data
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* @tsp: Pointer to TISCI proc contrl handle
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* @mem: Array of available memories
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* @num_mem: Number of available memories
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*/
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struct k3_dsp_privdata {
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struct reset_ctl dsp_rst;
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struct ti_sci_proc tsp;
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struct k3_dsp_mem *mem;
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int num_mems;
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};
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/**
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* k3_dsp_load() - Load up the Remote processor image
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* @dev: rproc device pointer
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* @addr: Address at which image is available
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* @size: size of the image
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*
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* Return: 0 if all goes good, else appropriate error message.
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*/
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static int k3_dsp_load(struct udevice *dev, ulong addr, ulong size)
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{
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struct k3_dsp_privdata *dsp = dev_get_priv(dev);
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u32 boot_vector;
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int ret;
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dev_dbg(dev, "%s addr = 0x%lx, size = 0x%lx\n", __func__, addr, size);
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ret = ti_sci_proc_request(&dsp->tsp);
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if (ret)
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return ret;
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ret = rproc_elf_load_image(dev, addr, size);
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if (ret < 0) {
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dev_err(dev, "Loading elf failed %d\n", ret);
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goto proc_release;
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}
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boot_vector = rproc_elf_get_boot_addr(dev, addr);
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dev_dbg(dev, "%s: Boot vector = 0x%x\n", __func__, boot_vector);
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ret = ti_sci_proc_set_config(&dsp->tsp, boot_vector, 0, 0);
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proc_release:
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ti_sci_proc_release(&dsp->tsp);
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return ret;
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}
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/**
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* k3_dsp_start() - Start the remote processor
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* @dev: rproc device pointer
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*
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* Return: 0 if all went ok, else return appropriate error
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*/
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static int k3_dsp_start(struct udevice *dev)
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{
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struct k3_dsp_privdata *dsp = dev_get_priv(dev);
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int ret;
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dev_dbg(dev, "%s\n", __func__);
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ret = ti_sci_proc_request(&dsp->tsp);
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if (ret)
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return ret;
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/*
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* Setting the right clock frequency would have taken care by
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* assigned-clock-rates during the device probe. So no need to
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* set the frequency again here.
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*/
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ret = ti_sci_proc_power_domain_on(&dsp->tsp);
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if (ret)
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goto proc_release;
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ret = reset_deassert(&dsp->dsp_rst);
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proc_release:
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ti_sci_proc_release(&dsp->tsp);
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return ret;
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}
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static int k3_dsp_stop(struct udevice *dev)
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{
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struct k3_dsp_privdata *dsp = dev_get_priv(dev);
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dev_dbg(dev, "%s\n", __func__);
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ti_sci_proc_request(&dsp->tsp);
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reset_assert(&dsp->dsp_rst);
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ti_sci_proc_power_domain_off(&dsp->tsp);
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ti_sci_proc_release(&dsp->tsp);
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return 0;
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}
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/**
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* k3_dsp_init() - Initialize the remote processor
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* @dev: rproc device pointer
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*
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* Return: 0 if all went ok, else return appropriate error
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*/
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static int k3_dsp_init(struct udevice *dev)
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{
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dev_dbg(dev, "%s\n", __func__);
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return 0;
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}
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static int k3_dsp_reset(struct udevice *dev)
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{
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dev_dbg(dev, "%s\n", __func__);
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return 0;
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}
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static void *k3_dsp_da_to_va(struct udevice *dev, ulong da, ulong len)
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{
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struct k3_dsp_privdata *dsp = dev_get_priv(dev);
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phys_addr_t bus_addr, dev_addr;
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void __iomem *va = NULL;
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size_t size;
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u32 offset;
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int i;
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dev_dbg(dev, "%s\n", __func__);
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if (len <= 0)
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return NULL;
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for (i = 0; i < dsp->num_mems; i++) {
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bus_addr = dsp->mem[i].bus_addr;
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dev_addr = dsp->mem[i].dev_addr;
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size = dsp->mem[i].size;
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if (da >= dev_addr && ((da + len) <= (dev_addr + size))) {
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offset = da - dev_addr;
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va = dsp->mem[i].cpu_addr + offset;
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return (__force void *)va;
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}
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if (da >= bus_addr && (da + len) <= (bus_addr + size)) {
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offset = da - bus_addr;
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va = dsp->mem[i].cpu_addr + offset;
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return (__force void *)va;
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}
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}
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/* Assume it is DDR region and return da */
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return map_physmem(da, len, MAP_NOCACHE);
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}
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static const struct dm_rproc_ops k3_dsp_ops = {
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.init = k3_dsp_init,
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.load = k3_dsp_load,
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.start = k3_dsp_start,
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.stop = k3_dsp_stop,
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.reset = k3_dsp_reset,
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.device_to_virt = k3_dsp_da_to_va,
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};
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static int ti_sci_proc_of_to_priv(struct udevice *dev, struct ti_sci_proc *tsp)
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{
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u32 ids[2];
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int ret;
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dev_dbg(dev, "%s\n", __func__);
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tsp->sci = ti_sci_get_by_phandle(dev, "ti,sci");
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if (IS_ERR(tsp->sci)) {
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dev_err(dev, "ti_sci get failed: %ld\n", PTR_ERR(tsp->sci));
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return PTR_ERR(tsp->sci);
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}
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ret = dev_read_u32_array(dev, "ti,sci-proc-ids", ids, 2);
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if (ret) {
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dev_err(dev, "Proc IDs not populated %d\n", ret);
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return ret;
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}
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tsp->ops = &tsp->sci->ops.proc_ops;
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tsp->proc_id = ids[0];
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tsp->host_id = ids[1];
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tsp->dev_id = dev_read_u32_default(dev, "ti,sci-dev-id",
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TI_SCI_RESOURCE_NULL);
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if (tsp->dev_id == TI_SCI_RESOURCE_NULL) {
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dev_err(dev, "Device ID not populated %d\n", ret);
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return -ENODEV;
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}
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return 0;
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}
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static int k3_dsp_of_get_memories(struct udevice *dev)
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{
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static const char * const mem_names[] = {"l2sram", "l1pram", "l1dram"};
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struct k3_dsp_privdata *dsp = dev_get_priv(dev);
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int i;
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dev_dbg(dev, "%s\n", __func__);
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dsp->num_mems = ARRAY_SIZE(mem_names);
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dsp->mem = calloc(dsp->num_mems, sizeof(*dsp->mem));
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if (!dsp->mem)
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return -ENOMEM;
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for (i = 0; i < dsp->num_mems; i++) {
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/* C71 cores only have a L1P Cache, there are no L1P SRAMs */
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if (device_is_compatible(dev, "ti,j721e-c71-dsp") &&
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!strcmp(mem_names[i], "l1pram")) {
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dsp->mem[i].bus_addr = FDT_ADDR_T_NONE;
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dsp->mem[i].dev_addr = FDT_ADDR_T_NONE;
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dsp->mem[i].cpu_addr = NULL;
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dsp->mem[i].size = 0;
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continue;
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}
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dsp->mem[i].bus_addr = dev_read_addr_size_name(dev, mem_names[i],
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(fdt_addr_t *)&dsp->mem[i].size);
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if (dsp->mem[i].bus_addr == FDT_ADDR_T_NONE) {
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dev_err(dev, "%s bus address not found\n", mem_names[i]);
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return -EINVAL;
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}
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dsp->mem[i].cpu_addr = map_physmem(dsp->mem[i].bus_addr,
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dsp->mem[i].size,
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MAP_NOCACHE);
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dsp->mem[i].dev_addr = dsp->mem[i].bus_addr &
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KEYSTONE_RPROC_LOCAL_ADDRESS_MASK;
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dev_dbg(dev, "memory %8s: bus addr %pa size 0x%zx va %p da %pa\n",
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mem_names[i], &dsp->mem[i].bus_addr,
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dsp->mem[i].size, dsp->mem[i].cpu_addr,
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&dsp->mem[i].dev_addr);
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}
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return 0;
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}
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/**
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* k3_of_to_priv() - generate private data from device tree
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* @dev: corresponding k3 dsp processor device
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* @dsp: pointer to driver specific private data
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*
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* Return: 0 if all goes good, else appropriate error message.
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*/
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static int k3_dsp_of_to_priv(struct udevice *dev, struct k3_dsp_privdata *dsp)
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{
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int ret;
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dev_dbg(dev, "%s\n", __func__);
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ret = reset_get_by_index(dev, 0, &dsp->dsp_rst);
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if (ret) {
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dev_err(dev, "reset_get() failed: %d\n", ret);
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return ret;
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}
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ret = ti_sci_proc_of_to_priv(dev, &dsp->tsp);
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if (ret)
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return ret;
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ret = k3_dsp_of_get_memories(dev);
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if (ret)
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return ret;
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return 0;
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}
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/**
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* k3_dsp_probe() - Basic probe
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* @dev: corresponding k3 remote processor device
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*
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* Return: 0 if all goes good, else appropriate error message.
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*/
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static int k3_dsp_probe(struct udevice *dev)
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{
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struct k3_dsp_privdata *dsp;
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int ret;
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dev_dbg(dev, "%s\n", __func__);
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dsp = dev_get_priv(dev);
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ret = k3_dsp_of_to_priv(dev, dsp);
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if (ret) {
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dev_dbg(dev, "%s: Probe failed with error %d\n", __func__, ret);
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return ret;
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}
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dev_dbg(dev, "Remoteproc successfully probed\n");
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return 0;
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}
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static int k3_dsp_remove(struct udevice *dev)
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{
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struct k3_dsp_privdata *dsp = dev_get_priv(dev);
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free(dsp->mem);
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return 0;
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}
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static const struct udevice_id k3_dsp_ids[] = {
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{ .compatible = "ti,j721e-c66-dsp"},
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{ .compatible = "ti,j721e-c71-dsp"},
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{}
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};
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U_BOOT_DRIVER(k3_dsp) = {
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.name = "k3_dsp",
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.of_match = k3_dsp_ids,
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.id = UCLASS_REMOTEPROC,
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.ops = &k3_dsp_ops,
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.probe = k3_dsp_probe,
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.remove = k3_dsp_remove,
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.priv_auto_alloc_size = sizeof(struct k3_dsp_privdata),
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};
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