diff options
Diffstat (limited to 'drivers/remoteproc')
25 files changed, 1871 insertions, 209 deletions
diff --git a/drivers/remoteproc/Kconfig b/drivers/remoteproc/Kconfig index d99548fb5dde..9e7efe542f69 100644 --- a/drivers/remoteproc/Kconfig +++ b/drivers/remoteproc/Kconfig @@ -125,6 +125,18 @@ config KEYSTONE_REMOTEPROC It's safe to say N here if you're not interested in the Keystone DSPs or just want to use a bare minimum kernel. +config PRU_REMOTEPROC + tristate "TI PRU remoteproc support" + depends on TI_PRUSS + default TI_PRUSS + help + Support for TI PRU remote processors present within a PRU-ICSS + subsystem via the remote processor framework. + + Say Y or M here to support the Programmable Realtime Unit (PRU) + processors on various TI SoCs. It's safe to say N here if you're + not interested in the PRU or if you are unsure. + config QCOM_PIL_INFO tristate @@ -183,7 +195,7 @@ config QCOM_Q6V5_PAS select QCOM_RPROC_COMMON select QCOM_SCM help - Say y here to support the TrustZone based Peripherial Image Loader + Say y here to support the TrustZone based Peripheral Image Loader for the Qualcomm Hexagon v5 based remote processors. This is commonly used to control subsystems such as ADSP, Compute and Sensor. diff --git a/drivers/remoteproc/Makefile b/drivers/remoteproc/Makefile index da2ace4ec86c..bb26c9e4ef9c 100644 --- a/drivers/remoteproc/Makefile +++ b/drivers/remoteproc/Makefile @@ -18,6 +18,7 @@ obj-$(CONFIG_OMAP_REMOTEPROC) += omap_remoteproc.o obj-$(CONFIG_WKUP_M3_RPROC) += wkup_m3_rproc.o obj-$(CONFIG_DA8XX_REMOTEPROC) += da8xx_remoteproc.o obj-$(CONFIG_KEYSTONE_REMOTEPROC) += keystone_remoteproc.o +obj-$(CONFIG_PRU_REMOTEPROC) += pru_rproc.o obj-$(CONFIG_QCOM_PIL_INFO) += qcom_pil_info.o obj-$(CONFIG_QCOM_RPROC_COMMON) += qcom_common.o obj-$(CONFIG_QCOM_Q6V5_COMMON) += qcom_q6v5.o diff --git a/drivers/remoteproc/ingenic_rproc.c b/drivers/remoteproc/ingenic_rproc.c index 1c2b21a5d178..26e19e6143b7 100644 --- a/drivers/remoteproc/ingenic_rproc.c +++ b/drivers/remoteproc/ingenic_rproc.c @@ -135,7 +135,7 @@ static void *ingenic_rproc_da_to_va(struct rproc *rproc, u64 da, size_t len) return (__force void *)va; } -static struct rproc_ops ingenic_rproc_ops = { +static const struct rproc_ops ingenic_rproc_ops = { .prepare = ingenic_rproc_prepare, .unprepare = ingenic_rproc_unprepare, .start = ingenic_rproc_start, diff --git a/drivers/remoteproc/mtk_common.h b/drivers/remoteproc/mtk_common.h index 47b4561443a9..988edb4977c3 100644 --- a/drivers/remoteproc/mtk_common.h +++ b/drivers/remoteproc/mtk_common.h @@ -32,22 +32,22 @@ #define MT8183_SCP_CACHESIZE_8KB BIT(8) #define MT8183_SCP_CACHE_CON_WAYEN BIT(10) -#define MT8192_L2TCM_SRAM_PD_0 0x210C0 -#define MT8192_L2TCM_SRAM_PD_1 0x210C4 -#define MT8192_L2TCM_SRAM_PD_2 0x210C8 -#define MT8192_L1TCM_SRAM_PDN 0x2102C -#define MT8192_CPU0_SRAM_PD 0x21080 - -#define MT8192_SCP2APMCU_IPC_SET 0x24080 -#define MT8192_SCP2APMCU_IPC_CLR 0x24084 +#define MT8192_L2TCM_SRAM_PD_0 0x10C0 +#define MT8192_L2TCM_SRAM_PD_1 0x10C4 +#define MT8192_L2TCM_SRAM_PD_2 0x10C8 +#define MT8192_L1TCM_SRAM_PDN 0x102C +#define MT8192_CPU0_SRAM_PD 0x1080 + +#define MT8192_SCP2APMCU_IPC_SET 0x4080 +#define MT8192_SCP2APMCU_IPC_CLR 0x4084 #define MT8192_SCP_IPC_INT_BIT BIT(0) -#define MT8192_SCP2SPM_IPC_CLR 0x24094 -#define MT8192_GIPC_IN_SET 0x24098 +#define MT8192_SCP2SPM_IPC_CLR 0x4094 +#define MT8192_GIPC_IN_SET 0x4098 #define MT8192_HOST_IPC_INT_BIT BIT(0) -#define MT8192_CORE0_SW_RSTN_CLR 0x30000 -#define MT8192_CORE0_SW_RSTN_SET 0x30004 -#define MT8192_CORE0_WDT_CFG 0x30034 +#define MT8192_CORE0_SW_RSTN_CLR 0x10000 +#define MT8192_CORE0_SW_RSTN_SET 0x10004 +#define MT8192_CORE0_WDT_CFG 0x10034 #define SCP_FW_VER_LEN 32 #define SCP_SHARE_BUFFER_SIZE 288 @@ -78,6 +78,8 @@ struct mtk_scp_of_data { u32 host_to_scp_reg; u32 host_to_scp_int_bit; + + size_t ipi_buf_offset; }; struct mtk_scp { @@ -99,7 +101,7 @@ struct mtk_scp { bool ipi_id_ack[SCP_IPI_MAX]; wait_queue_head_t ack_wq; - void __iomem *cpu_addr; + void *cpu_addr; dma_addr_t dma_addr; size_t dram_size; diff --git a/drivers/remoteproc/mtk_scp.c b/drivers/remoteproc/mtk_scp.c index 577cbd5d421e..e0c235690361 100644 --- a/drivers/remoteproc/mtk_scp.c +++ b/drivers/remoteproc/mtk_scp.c @@ -21,7 +21,7 @@ #include "remoteproc_internal.h" #define MAX_CODE_SIZE 0x500000 -#define SCP_FW_END 0x7C000 +#define SECTION_NAME_IPI_BUFFER ".ipi_buffer" /** * scp_get() - get a reference to SCP. @@ -119,16 +119,29 @@ static void scp_ipi_handler(struct mtk_scp *scp) wake_up(&scp->ack_wq); } -static int scp_ipi_init(struct mtk_scp *scp) +static int scp_elf_read_ipi_buf_addr(struct mtk_scp *scp, + const struct firmware *fw, + size_t *offset); + +static int scp_ipi_init(struct mtk_scp *scp, const struct firmware *fw) { - size_t send_offset = SCP_FW_END - sizeof(struct mtk_share_obj); - size_t recv_offset = send_offset - sizeof(struct mtk_share_obj); + int ret; + size_t offset; - /* shared buffer initialization */ - scp->recv_buf = - (struct mtk_share_obj __iomem *)(scp->sram_base + recv_offset); - scp->send_buf = - (struct mtk_share_obj __iomem *)(scp->sram_base + send_offset); + /* read the ipi buf addr from FW itself first */ + ret = scp_elf_read_ipi_buf_addr(scp, fw, &offset); + if (ret) { + /* use default ipi buf addr if the FW doesn't have it */ + offset = scp->data->ipi_buf_offset; + if (!offset) + return ret; + } + dev_info(scp->dev, "IPI buf addr %#010zx\n", offset); + + scp->recv_buf = (struct mtk_share_obj __iomem *) + (scp->sram_base + offset); + scp->send_buf = (struct mtk_share_obj __iomem *) + (scp->sram_base + offset + sizeof(*scp->recv_buf)); memset_io(scp->recv_buf, 0, sizeof(*scp->recv_buf)); memset_io(scp->send_buf, 0, sizeof(*scp->send_buf)); @@ -234,12 +247,14 @@ static int scp_elf_load_segments(struct rproc *rproc, const struct firmware *fw) u32 offset = phdr->p_offset; void __iomem *ptr; - if (phdr->p_type != PT_LOAD) - continue; - dev_dbg(dev, "phdr: type %d da 0x%x memsz 0x%x filesz 0x%x\n", phdr->p_type, da, memsz, filesz); + if (phdr->p_type != PT_LOAD) + continue; + if (!filesz) + continue; + if (filesz > memsz) { dev_err(dev, "bad phdr filesz 0x%x memsz 0x%x\n", filesz, memsz); @@ -263,14 +278,38 @@ static int scp_elf_load_segments(struct rproc *rproc, const struct firmware *fw) } /* put the segment where the remote processor expects it */ - if (phdr->p_filesz) - scp_memcpy_aligned(ptr, elf_data + phdr->p_offset, - filesz); + scp_memcpy_aligned(ptr, elf_data + phdr->p_offset, filesz); } return ret; } +static int scp_elf_read_ipi_buf_addr(struct mtk_scp *scp, + const struct firmware *fw, + size_t *offset) +{ + struct elf32_hdr *ehdr; + struct elf32_shdr *shdr, *shdr_strtab; + int i; + const u8 *elf_data = fw->data; + const char *strtab; + + ehdr = (struct elf32_hdr *)elf_data; + shdr = (struct elf32_shdr *)(elf_data + ehdr->e_shoff); + shdr_strtab = shdr + ehdr->e_shstrndx; + strtab = (const char *)(elf_data + shdr_strtab->sh_offset); + + for (i = 0; i < ehdr->e_shnum; i++, shdr++) { + if (strcmp(strtab + shdr->sh_name, + SECTION_NAME_IPI_BUFFER) == 0) { + *offset = shdr->sh_addr; + return 0; + } + } + + return -ENOENT; +} + static int mt8183_scp_before_load(struct mtk_scp *scp) { /* Clear SCP to host interrupt */ @@ -298,7 +337,7 @@ static int mt8183_scp_before_load(struct mtk_scp *scp) return 0; } -static void mt8192_power_on_sram(void *addr) +static void mt8192_power_on_sram(void __iomem *addr) { int i; @@ -307,7 +346,7 @@ static void mt8192_power_on_sram(void *addr) writel(0, addr); } -static void mt8192_power_off_sram(void *addr) +static void mt8192_power_off_sram(void __iomem *addr) { int i; @@ -350,14 +389,32 @@ static int scp_load(struct rproc *rproc, const struct firmware *fw) ret = scp->data->scp_before_load(scp); if (ret < 0) - return ret; + goto leave; ret = scp_elf_load_segments(rproc, fw); +leave: clk_disable_unprepare(scp->clk); return ret; } +static int scp_parse_fw(struct rproc *rproc, const struct firmware *fw) +{ + struct mtk_scp *scp = rproc->priv; + struct device *dev = scp->dev; + int ret; + + ret = clk_prepare_enable(scp->clk); + if (ret) { + dev_err(dev, "failed to enable clocks\n"); + return ret; + } + + ret = scp_ipi_init(scp, fw); + clk_disable_unprepare(scp->clk); + return ret; +} + static int scp_start(struct rproc *rproc) { struct mtk_scp *scp = (struct mtk_scp *)rproc->priv; @@ -408,12 +465,12 @@ static void *scp_da_to_va(struct rproc *rproc, u64 da, size_t len) if (da < scp->sram_size) { offset = da; - if (offset >= 0 && (offset + len) < scp->sram_size) + if (offset >= 0 && (offset + len) <= scp->sram_size) return (void __force *)scp->sram_base + offset; } else if (scp->dram_size) { offset = da - scp->dma_addr; - if (offset >= 0 && (offset + len) < scp->dram_size) - return (void __force *)scp->cpu_addr + offset; + if (offset >= 0 && (offset + len) <= scp->dram_size) + return scp->cpu_addr + offset; } return NULL; @@ -461,6 +518,7 @@ static const struct rproc_ops scp_ops = { .stop = scp_stop, .load = scp_load, .da_to_va = scp_da_to_va, + .parse_fw = scp_parse_fw, }; /** @@ -680,19 +738,6 @@ static int scp_probe(struct platform_device *pdev) goto release_dev_mem; } - ret = clk_prepare_enable(scp->clk); - if (ret) { - dev_err(dev, "failed to enable clocks\n"); - goto release_dev_mem; - } - - ret = scp_ipi_init(scp); - clk_disable_unprepare(scp->clk); - if (ret) { - dev_err(dev, "Failed to init ipi\n"); - goto release_dev_mem; - } - /* register SCP initialization IPI */ ret = scp_ipi_register(scp, SCP_IPI_INIT, scp_init_ipi_handler, scp); if (ret) { @@ -760,6 +805,7 @@ static const struct mtk_scp_of_data mt8183_of_data = { .scp_stop = mt8183_scp_stop, .host_to_scp_reg = MT8183_HOST_TO_SCP, .host_to_scp_int_bit = MT8183_HOST_IPC_INT_BIT, + .ipi_buf_offset = 0x7bdb0, }; static const struct mtk_scp_of_data mt8192_of_data = { @@ -784,7 +830,7 @@ static struct platform_driver mtk_scp_driver = { .remove = scp_remove, .driver = { .name = "mtk-scp", - .of_match_table = of_match_ptr(mtk_scp_of_match), + .of_match_table = mtk_scp_of_match, }, }; diff --git a/drivers/remoteproc/pru_rproc.c b/drivers/remoteproc/pru_rproc.c new file mode 100644 index 000000000000..2667919d76b3 --- /dev/null +++ b/drivers/remoteproc/pru_rproc.c @@ -0,0 +1,875 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * PRU-ICSS remoteproc driver for various TI SoCs + * + * Copyright (C) 2014-2020 Texas Instruments Incorporated - https://www.ti.com/ + * + * Author(s): + * Suman Anna <s-anna@ti.com> + * Andrew F. Davis <afd@ti.com> + * Grzegorz Jaszczyk <grzegorz.jaszczyk@linaro.org> for Texas Instruments + */ + +#include <linux/bitops.h> +#include <linux/debugfs.h> +#include <linux/irqdomain.h> +#include <linux/module.h> +#include <linux/of_device.h> +#include <linux/of_irq.h> +#include <linux/pruss_driver.h> +#include <linux/remoteproc.h> + +#include "remoteproc_internal.h" +#include "remoteproc_elf_helpers.h" +#include "pru_rproc.h" + +/* PRU_ICSS_PRU_CTRL registers */ +#define PRU_CTRL_CTRL 0x0000 +#define PRU_CTRL_STS 0x0004 +#define PRU_CTRL_WAKEUP_EN 0x0008 +#define PRU_CTRL_CYCLE 0x000C +#define PRU_CTRL_STALL 0x0010 +#define PRU_CTRL_CTBIR0 0x0020 +#define PRU_CTRL_CTBIR1 0x0024 +#define PRU_CTRL_CTPPR0 0x0028 +#define PRU_CTRL_CTPPR1 0x002C + +/* CTRL register bit-fields */ +#define CTRL_CTRL_SOFT_RST_N BIT(0) +#define CTRL_CTRL_EN BIT(1) +#define CTRL_CTRL_SLEEPING BIT(2) +#define CTRL_CTRL_CTR_EN BIT(3) +#define CTRL_CTRL_SINGLE_STEP BIT(8) +#define CTRL_CTRL_RUNSTATE BIT(15) + +/* PRU_ICSS_PRU_DEBUG registers */ +#define PRU_DEBUG_GPREG(x) (0x0000 + (x) * 4) +#define PRU_DEBUG_CT_REG(x) (0x0080 + (x) * 4) + +/* PRU/RTU/Tx_PRU Core IRAM address masks */ +#define PRU_IRAM_ADDR_MASK 0x3ffff +#define PRU0_IRAM_ADDR_MASK 0x34000 +#define PRU1_IRAM_ADDR_MASK 0x38000 +#define RTU0_IRAM_ADDR_MASK 0x4000 +#define RTU1_IRAM_ADDR_MASK 0x6000 +#define TX_PRU0_IRAM_ADDR_MASK 0xa000 +#define TX_PRU1_IRAM_ADDR_MASK 0xc000 + +/* PRU device addresses for various type of PRU RAMs */ +#define PRU_IRAM_DA 0 /* Instruction RAM */ +#define PRU_PDRAM_DA 0 /* Primary Data RAM */ +#define PRU_SDRAM_DA 0x2000 /* Secondary Data RAM */ +#define PRU_SHRDRAM_DA 0x10000 /* Shared Data RAM */ + +#define MAX_PRU_SYS_EVENTS 160 + +/** + * enum pru_iomem - PRU core memory/register range identifiers + * + * @PRU_IOMEM_IRAM: PRU Instruction RAM range + * @PRU_IOMEM_CTRL: PRU Control register range + * @PRU_IOMEM_DEBUG: PRU Debug register range + * @PRU_IOMEM_MAX: just keep this one at the end + */ +enum pru_iomem { + PRU_IOMEM_IRAM = 0, + PRU_IOMEM_CTRL, + PRU_IOMEM_DEBUG, + PRU_IOMEM_MAX, +}; + +/** + * enum pru_type - PRU core type identifier + * + * @PRU_TYPE_PRU: Programmable Real-time Unit + * @PRU_TYPE_RTU: Auxiliary Programmable Real-Time Unit + * @PRU_TYPE_TX_PRU: Transmit Programmable Real-Time Unit + * @PRU_TYPE_MAX: just keep this one at the end + */ +enum pru_type { + PRU_TYPE_PRU = 0, + PRU_TYPE_RTU, + PRU_TYPE_TX_PRU, + PRU_TYPE_MAX, +}; + +/** + * struct pru_private_data - device data for a PRU core + * @type: type of the PRU core (PRU, RTU, Tx_PRU) + * @is_k3: flag used to identify the need for special load handling + */ +struct pru_private_data { + enum pru_type type; + unsigned int is_k3 : 1; +}; + +/** + * struct pru_rproc - PRU remoteproc structure + * @id: id of the PRU core within the PRUSS + * @dev: PRU core device pointer + * @pruss: back-reference to parent PRUSS structure + * @rproc: remoteproc pointer for this PRU core + * @data: PRU core specific data + * @mem_regions: data for each of the PRU memory regions + * @fw_name: name of firmware image used during loading + * @mapped_irq: virtual interrupt numbers of created fw specific mapping + * @pru_interrupt_map: pointer to interrupt mapping description (firmware) + * @pru_interrupt_map_sz: pru_interrupt_map size + * @dbg_single_step: debug state variable to set PRU into single step mode + * @dbg_continuous: debug state variable to restore PRU execution mode + * @evt_count: number of mapped events + */ +struct pru_rproc { + int id; + struct device *dev; + struct pruss *pruss; + struct rproc *rproc; + const struct pru_private_data *data; + struct pruss_mem_region mem_regions[PRU_IOMEM_MAX]; + const char *fw_name; + unsigned int *mapped_irq; + struct pru_irq_rsc *pru_interrupt_map; + size_t pru_interrupt_map_sz; + u32 dbg_single_step; + u32 dbg_continuous; + u8 evt_count; +}; + +static inline u32 pru_control_read_reg(struct pru_rproc *pru, unsigned int reg) +{ + return readl_relaxed(pru->mem_regions[PRU_IOMEM_CTRL].va + reg); +} + +static inline +void pru_control_write_reg(struct pru_rproc *pru, unsigned int reg, u32 val) +{ + writel_relaxed(val, pru->mem_regions[PRU_IOMEM_CTRL].va + reg); +} + +static inline u32 pru_debug_read_reg(struct pru_rproc *pru, unsigned int reg) +{ + return readl_relaxed(pru->mem_regions[PRU_IOMEM_DEBUG].va + reg); +} + +static int regs_show(struct seq_file *s, void *data) +{ + struct rproc *rproc = s->private; + struct pru_rproc *pru = rproc->priv; + int i, nregs = 32; + u32 pru_sts; + int pru_is_running; + + seq_puts(s, "============== Control Registers ==============\n"); + seq_printf(s, "CTRL := 0x%08x\n", + pru_control_read_reg(pru, PRU_CTRL_CTRL)); + pru_sts = pru_control_read_reg(pru, PRU_CTRL_STS); + seq_printf(s, "STS (PC) := 0x%08x (0x%08x)\n", pru_sts, pru_sts << 2); + seq_printf(s, "WAKEUP_EN := 0x%08x\n", + pru_control_read_reg(pru, PRU_CTRL_WAKEUP_EN)); + seq_printf(s, "CYCLE := 0x%08x\n", + pru_control_read_reg(pru, PRU_CTRL_CYCLE)); + seq_printf(s, "STALL := 0x%08x\n", + pru_control_read_reg(pru, PRU_CTRL_STALL)); + seq_printf(s, "CTBIR0 := 0x%08x\n", + pru_control_read_reg(pru, PRU_CTRL_CTBIR0)); + seq_printf(s, "CTBIR1 := 0x%08x\n", + pru_control_read_reg(pru, PRU_CTRL_CTBIR1)); + seq_printf(s, "CTPPR0 := 0x%08x\n", + pru_control_read_reg(pru, PRU_CTRL_CTPPR0)); + seq_printf(s, "CTPPR1 := 0x%08x\n", + pru_control_read_reg(pru, PRU_CTRL_CTPPR1)); + + seq_puts(s, "=============== Debug Registers ===============\n"); + pru_is_running = pru_control_read_reg(pru, PRU_CTRL_CTRL) & + CTRL_CTRL_RUNSTATE; + if (pru_is_running) { + seq_puts(s, "PRU is executing, cannot print/access debug registers.\n"); + return 0; + } + + for (i = 0; i < nregs; i++) { + seq_printf(s, "GPREG%-2d := 0x%08x\tCT_REG%-2d := 0x%08x\n", + i, pru_debug_read_reg(pru, PRU_DEBUG_GPREG(i)), + i, pru_debug_read_reg(pru, PRU_DEBUG_CT_REG(i))); + } + + return 0; +} +DEFINE_SHOW_ATTRIBUTE(regs); + +/* + * Control PRU single-step mode + * + * This is a debug helper function used for controlling the single-step + * mode of the PRU. The PRU Debug registers are not accessible when the + * PRU is in RUNNING state. + * + * Writing a non-zero value sets the PRU into single-step mode irrespective + * of its previous state. The PRU mode is saved only on the first set into + * a single-step mode. Writing a zero value will restore the PRU into its + * original mode. + */ +static int pru_rproc_debug_ss_set(void *data, u64 val) +{ + struct rproc *rproc = data; + struct pru_rproc *pru = rproc->priv; + u32 reg_val; + + val = val ? 1 : 0; + if (!val && !pru->dbg_single_step) + return 0; + + reg_val = pru_control_read_reg(pru, PRU_CTRL_CTRL); + + if (val && !pru->dbg_single_step) + pru->dbg_continuous = reg_val; + + if (val) + reg_val |= CTRL_CTRL_SINGLE_STEP | CTRL_CTRL_EN; + else + reg_val = pru->dbg_continuous; + + pru->dbg_single_step = val; + pru_control_write_reg(pru, PRU_CTRL_CTRL, reg_val); + + return 0; +} + +static int pru_rproc_debug_ss_get(void *data, u64 *val) +{ + struct rproc *rproc = data; + struct pru_rproc *pru = rproc->priv; + + *val = pru->dbg_single_step; + + return 0; +} +DEFINE_SIMPLE_ATTRIBUTE(pru_rproc_debug_ss_fops, pru_rproc_debug_ss_get, + pru_rproc_debug_ss_set, "%llu\n"); + +/* + * Create PRU-specific debugfs entries + * + * The entries are created only if the parent remoteproc debugfs directory + * exists, and will be cleaned up by the remoteproc core. + */ +static void pru_rproc_create_debug_entries(struct rproc *rproc) +{ + if (!rproc->dbg_dir) + return; + + debugfs_create_file("regs", 0400, rproc->dbg_dir, + rproc, ®s_fops); + debugfs_create_file("single_step", 0600, rproc->dbg_dir, + rproc, &pru_rproc_debug_ss_fops); +} + +static void pru_dispose_irq_mapping(struct pru_rproc *pru) +{ + while (pru->evt_count--) { + if (pru->mapped_irq[pru->evt_count] > 0) + irq_dispose_mapping(pru->mapped_irq[pru->evt_count]); + } + + kfree(pru->mapped_irq); +} + +/* + * Parse the custom PRU interrupt map resource and configure the INTC + * appropriately. + */ +static int pru_handle_intrmap(struct rproc *rproc) +{ + struct device *dev = rproc->dev.parent; + struct pru_rproc *pru = rproc->priv; + struct pru_irq_rsc *rsc = pru->pru_interrupt_map; + struct irq_fwspec fwspec; + struct device_node *irq_parent; + int i, ret = 0; + + /* not having pru_interrupt_map is not an error */ + if (!rsc) + return 0; + + /* currently supporting only type 0 */ + if (rsc->type != 0) { + dev_err(dev, "unsupported rsc type: %d\n", rsc->type); + return -EINVAL; + } + + if (rsc->num_evts > MAX_PRU_SYS_EVENTS) + return -EINVAL; + + if (sizeof(*rsc) + rsc->num_evts * sizeof(struct pruss_int_map) != + pru->pru_interrupt_map_sz) + return -EINVAL; + + pru->evt_count = rsc->num_evts; + pru->mapped_irq = kcalloc(pru->evt_count, sizeof(unsigned int), + GFP_KERNEL); + if (!pru->mapped_irq) + return -ENOMEM; + + /* + * parse and fill in system event to interrupt channel and + * channel-to-host mapping + */ + irq_parent = of_irq_find_parent(pru->dev->of_node); + if (!irq_parent) { + kfree(pru->mapped_irq); + return -ENODEV; + } + + fwspec.fwnode = of_node_to_fwnode(irq_parent); + fwspec.param_count = 3; + for (i = 0; i < pru->evt_count; i++) { + fwspec.param[0] = rsc->pru_intc_map[i].event; + fwspec.param[1] = rsc->pru_intc_map[i].chnl; + fwspec.param[2] = rsc->pru_intc_map[i].host; + + dev_dbg(dev, "mapping%d: event %d, chnl %d, host %d\n", + i, fwspec.param[0], fwspec.param[1], fwspec.param[2]); + + pru->mapped_irq[i] = irq_create_fwspec_mapping(&fwspec); + if (!pru->mapped_irq[i]) { + dev_err(dev, "failed to get virq\n"); + ret = pru->mapped_irq[i]; + goto map_fail; + } + } + + return ret; + +map_fail: + pru_dispose_irq_mapping(pru); + + return ret; +} + +static int pru_rproc_start(struct rproc *rproc) +{ + struct device *dev = &rproc->dev; + struct pru_rproc *pru = rproc->priv; + const char *names[PRU_TYPE_MAX] = { "PRU", "RTU", "Tx_PRU" }; + u32 val; + int ret; + + dev_dbg(dev, "starting %s%d: entry-point = 0x%llx\n", + names[pru->data->type], pru->id, (rproc->bootaddr >> 2)); + + ret = pru_handle_intrmap(rproc); + /* + * reset references to pru interrupt map - they will stop being valid + * after rproc_start returns + */ + pru->pru_interrupt_map = NULL; + pru->pru_interrupt_map_sz = 0; + if (ret) + return ret; + + val = CTRL_CTRL_EN | ((rproc->bootaddr >> 2) << 16); + pru_control_write_reg(pru, PRU_CTRL_CTRL, val); + + return 0; +} + +static int pru_rproc_stop(struct rproc *rproc) +{ + struct device *dev = &rproc->dev; + struct pru_rproc *pru = rproc->priv; + const char *names[PRU_TYPE_MAX] = { "PRU", "RTU", "Tx_PRU" }; + u32 val; + + dev_dbg(dev, "stopping %s%d\n", names[pru->data->type], pru->id); + + val = pru_control_read_reg(pru, PRU_CTRL_CTRL); + val &= ~CTRL_CTRL_EN; + pru_control_write_reg(pru, PRU_CTRL_CTRL, val); + + /* dispose irq mapping - new firmware can provide new mapping */ + if (pru->mapped_irq) + pru_dispose_irq_mapping(pru); + + return 0; +} + +/* + * Convert PRU device address (data spaces only) to kernel virtual address. + * + * Each PRU has access to all data memories within the PRUSS, accessible at + * different ranges. So, look through both its primary and secondary Data + * RAMs as well as any shared Data RAM to convert a PRU device address to + * kernel virtual address. Data RAM0 is primary Data RAM for PRU0 and Data + * RAM1 is primary Data RAM for PRU1. + */ +static void *pru_d_da_to_va(struct pru_rproc *pru, u32 da, size_t len) +{ + struct pruss_mem_region dram0, dram1, shrd_ram; + struct pruss *pruss = pru->pruss; + u32 offset; + void *va = NULL; + + if (len == 0) + return NULL; + + dram0 = pruss->mem_regions[PRUSS_MEM_DRAM0]; + dram1 = pruss->mem_regions[PRUSS_MEM_DRAM1]; + /* PRU1 has its local RAM addresses reversed */ + if (pru->id == 1) + swap(dram0, dram1); + shrd_ram = pruss->mem_regions[PRUSS_MEM_SHRD_RAM2]; + + if (da >= PRU_PDRAM_DA && da + len <= PRU_PDRAM_DA + dram0.size) { + offset = da - PRU_PDRAM_DA; + va = (__force void *)(dram0.va + offset); + } else if (da >= PRU_SDRAM_DA && + da + len <= PRU_SDRAM_DA + dram1.size) { + offset = da - PRU_SDRAM_DA; + va = (__force void *)(dram1.va + offset); + } else if (da >= PRU_SHRDRAM_DA && + da + len <= PRU_SHRDRAM_DA + shrd_ram.size) { + offset = da - PRU_SHRDRAM_DA; + va = (__force void *)(shrd_ram.va + offset); + } + + return va; +} + +/* + * Convert PRU device address (instruction space) to kernel virtual address. + * + * A PRU does not have an unified address space. Each PRU has its very own + * private Instruction RAM, and its device address is identical to that of + * its primary Data RAM device address. + */ +static void *pru_i_da_to_va(struct pru_rproc *pru, u32 da, size_t len) +{ + u32 offset; + void *va = NULL; + + if (len == 0) + return NULL; + + if (da >= PRU_IRAM_DA && + da + len <= PRU_IRAM_DA + pru->mem_regions[PRU_IOMEM_IRAM].size) { + offset = da - PRU_IRAM_DA; + va = (__force void *)(pru->mem_regions[PRU_IOMEM_IRAM].va + + offset); + } + + return va; +} + +/* + * Provide address translations for only PRU Data RAMs through the remoteproc + * core for any PRU client drivers. The PRU Instruction RAM access is restricted + * only to the PRU loader code. + */ +static void *pru_rproc_da_to_va(struct rproc *rproc, u64 da, size_t len) +{ + struct pru_rproc *pru = rproc->priv; + + return pru_d_da_to_va(pru, da, len); +} + +/* PRU-specific address translator used by PRU loader. */ +static void *pru_da_to_va(struct rproc *rproc, u64 da, size_t len, bool is_iram) +{ + struct pru_rproc *pru = rproc->priv; + void *va; + + if (is_iram) + va = pru_i_da_to_va(pru, da, len); + else + va = pru_d_da_to_va(pru, da, len); + + return va; +} + +static struct rproc_ops pru_rproc_ops = { + .start = pru_rproc_start, + .stop = pru_rproc_stop, + .da_to_va = pru_rproc_da_to_va, +}; + +/* + * Custom memory copy implementation for ICSSG PRU/RTU/Tx_PRU Cores + * + * The ICSSG PRU/RTU/Tx_PRU cores have a memory copying issue with IRAM + * memories, that is not seen on previous generation SoCs. The data is reflected + * properly in the IRAM memories only for integer (4-byte) copies. Any unaligned + * copies result in all the other pre-existing bytes zeroed out within that + * 4-byte boundary, thereby resulting in wrong text/code in the IRAMs. Also, the + * IRAM memory port interface does not allow any 8-byte copies (as commonly used + * by ARM64 memcpy implementation) and throws an exception. The DRAM memory + * ports do not show this behavior. + */ +static int pru_rproc_memcpy(void *dest, const void *src, size_t count) +{ + const u32 *s = src; + u32 *d = dest; + size_t size = count / 4; + u32 *tmp_src = NULL; + + /* + * TODO: relax limitation of 4-byte aligned dest addresses and copy + * sizes + */ + if ((long)dest % 4 || count % 4) + return -EINVAL; + + /* src offsets in ELF firmware image can be non-aligned */ + if ((long)src % 4) { + tmp_src = kmemdup(src, count, GFP_KERNEL); + if (!tmp_src) + return -ENOMEM; + s = tmp_src; + } + + while (size--) + *d++ = *s++; + + kfree(tmp_src); + + return 0; +} + +static int +pru_rproc_load_elf_segments(struct rproc *rproc, const struct firmware *fw) +{ + struct pru_rproc *pru = rproc->priv; + struct device *dev = &rproc->dev; + struct elf32_hdr *ehdr; + struct elf32_phdr *phdr; + int i, ret = 0; + const u8 *elf_data = fw->data; + + ehdr = (struct elf32_hdr *)elf_data; + phdr = (struct elf32_phdr *)(elf_data + ehdr->e_phoff); + + /* go through the available ELF segments */ + for (i = 0; i < ehdr->e_phnum; i++, phdr++) { + u32 da = phdr->p_paddr; + u32 memsz = phdr->p_memsz; + u32 filesz = phdr->p_filesz; + u32 offset = phdr->p_offset; + bool is_iram; + void *ptr; + + if (phdr->p_type != PT_LOAD || !filesz) + continue; + + dev_dbg(dev, "phdr: type %d da 0x%x memsz 0x%x filesz 0x%x\n", + phdr->p_type, da, memsz, filesz); + + if (filesz > memsz) { + dev_err(dev, "bad phdr filesz 0x%x memsz 0x%x\n", + filesz, memsz); + ret = -EINVAL; + break; + } + + if (offset + filesz > fw->size) { + dev_err(dev, "truncated fw: need 0x%x avail 0x%zx\n", + offset + filesz, fw->size); + ret = -EINVAL; + break; + } + + /* grab the kernel address for this device address */ + is_iram = phdr->p_flags & PF_X; + ptr = pru_da_to_va(rproc, da, memsz, is_iram); + if (!ptr) { + dev_err(dev, "bad phdr da 0x%x mem 0x%x\n", da, memsz); + ret = -EINVAL; + break; + } + + if (pru->data->is_k3 && is_iram) { + ret = pru_rproc_memcpy(ptr, elf_data + phdr->p_offset, + filesz); + if (ret) { + dev_err(dev, "PRU memory copy failed for da 0x%x memsz 0x%x\n", + da, memsz); + break; + } + } else { + memcpy(ptr, elf_data + phdr->p_offset, filesz); + } + + /* skip the memzero logic performed by remoteproc ELF loader */ + } + + return ret; +} + +static const void * +pru_rproc_find_interrupt_map(struct device *dev, const struct firmware *fw) +{ + struct elf32_shdr *shdr, *name_table_shdr; + const char *name_table; + const u8 *elf_data = fw->data; + struct elf32_hdr *ehdr = (struct elf32_hdr *)elf_data; + u16 shnum = ehdr->e_shnum; + u16 shstrndx = ehdr->e_shstrndx; + int i; + + /* first, get the section header */ + shdr = (struct elf32_shdr *)(elf_data + ehdr->e_shoff); + /* compute name table section header entry in shdr array */ + name_table_shdr = shdr + shstrndx; + /* finally, compute the name table section address in elf */ + name_table = elf_data + name_table_shdr->sh_offset; + + for (i = 0; i < shnum; i++, shdr++) { + u32 size = shdr->sh_size; + u32 offset = shdr->sh_offset; + u32 name = shdr->sh_name; + + if (strcmp(name_table + name, ".pru_irq_map")) + continue; + + /* make sure we have the entire irq map */ + if (offset + size > fw->size || offset + size < size) { + dev_err(dev, ".pru_irq_map section truncated\n"); + return ERR_PTR(-EINVAL); + } + + /* make sure irq map has at least the header */ + if (sizeof(struct pru_irq_rsc) > size) { + dev_err(dev, "header-less .pru_irq_map section\n"); + return ERR_PTR(-EINVAL); + } + + return shdr; + } + + dev_dbg(dev, "no .pru_irq_map section found for this fw\n"); + + return NULL; +} + +/* + * Use a custom parse_fw callback function for dealing with PRU firmware + * specific sections. + * + * The firmware blob can contain optional ELF sections: .resource_table section + * and .pru_irq_map one. The second one contains the PRUSS interrupt mapping + * description, which needs to be setup before powering on the PRU core. To + * avoid RAM wastage this ELF section is not mapped to any ELF segment (by the + * firmware linker) and therefore is not loaded to PRU memory. + */ +static int pru_rproc_parse_fw(struct rproc *rproc, const struct firmware *fw) +{ + struct device *dev = &rproc->dev; + struct pru_rproc *pru = rproc->priv; + const u8 *elf_data = fw->data; + const void *shdr; + u8 class = fw_elf_get_class(fw); + u64 sh_offset; + int ret; + + /* load optional rsc table */ + ret = rproc_elf_load_rsc_table(rproc, fw); + if (ret == -EINVAL) + dev_dbg(&rproc->dev, "no resource table found for this fw\n"); + else if (ret) + return ret; + + /* find .pru_interrupt_map section, not having it is not an error */ + shdr = pru_rproc_find_interrupt_map(dev, fw); + if (IS_ERR(shdr)) + return PTR_ERR(shdr); + + if (!shdr) + return 0; + + /* preserve pointer to PRU interrupt map together with it size */ + sh_offset = elf_shdr_get_sh_offset(class, shdr); + pru->pru_interrupt_map = (struct pru_irq_rsc *)(elf_data + sh_offset); + pru->pru_interrupt_map_sz = elf_shdr_get_sh_size(class, shdr); + + return 0; +} + +/* + * Compute PRU id based on the IRAM addresses. The PRU IRAMs are + * always at a particular offset within the PRUSS address space. + */ +static int pru_rproc_set_id(struct pru_rproc *pru) +{ + int ret = 0; + + switch (pru->mem_regions[PRU_IOMEM_IRAM].pa & PRU_IRAM_ADDR_MASK) { + case TX_PRU0_IRAM_ADDR_MASK: + fallthrough; + case RTU0_IRAM_ADDR_MASK: + fallthrough; + case PRU0_IRAM_ADDR_MASK: + pru->id = 0; + break; + case TX_PRU1_IRAM_ADDR_MASK: + fallthrough; + case RTU1_IRAM_ADDR_MASK: + fallthrough; + case PRU1_IRAM_ADDR_MASK: + pru->id = 1; + break; + default: + ret = -EINVAL; + } + + return ret; +} + +static int pru_rproc_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct device_node *np = dev->of_node; + struct platform_device *ppdev = to_platform_device(dev->parent); + struct pru_rproc *pru; + const char *fw_name; + struct rproc *rproc = NULL; + struct resource *res; + int i, ret; + const struct pru_private_data *data; + const char *mem_names[PRU_IOMEM_MAX] = { "iram", "control", "debug" }; + + data = of_device_get_match_data(&pdev->dev); + if (!data) + return -ENODEV; + + ret = of_property_read_string(np, "firmware-name", &fw_name); + if (ret) { + dev_err(dev, "unable to retrieve firmware-name %d\n", ret); + return ret; + } + + rproc = devm_rproc_alloc(dev, pdev->name, &pru_rproc_ops, fw_name, + sizeof(*pru)); + if (!rproc) { + dev_err(dev, "rproc_alloc failed\n"); + return -ENOMEM; + } + /* use a custom load function to deal with PRU-specific quirks */ + rproc->ops->load = pru_rproc_load_elf_segments; + + /* use a custom parse function to deal with PRU-specific resources */ + rproc->ops->parse_fw = pru_rproc_parse_fw; + + /* error recovery is not supported for PRUs */ + rproc->recovery_disabled = true; + + /* + * rproc_add will auto-boot the processor normally, but this is not + * desired with PRU client driven boot-flow methodology. A PRU + * application/client driver will boot the corresponding PRU + * remote-processor as part of its state machine either through the + * remoteproc sysfs interface or through the equivalent kernel API. + */ + rproc->auto_boot = false; + + pru = rproc->priv; + pru->dev = dev; + pru->data = data; + pru->pruss = platform_get_drvdata(ppdev); + pru->rproc = rproc; + pru->fw_name = fw_name; + + for (i = 0; i < ARRAY_SIZE(mem_names); i++) { + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, + mem_names[i]); + pru->mem_regions[i].va = devm_ioremap_resource(dev, res); + if (IS_ERR(pru->mem_regions[i].va)) { + dev_err(dev, "failed to parse and map memory resource %d %s\n", + i, mem_names[i]); + ret = PTR_ERR(pru->mem_regions[i].va); + return ret; + } + pru->mem_regions[i].pa = res->start; + pru->mem_regions[i].size = resource_size(res); + + dev_dbg(dev, "memory %8s: pa %pa size 0x%zx va %pK\n", + mem_names[i], &pru->mem_regions[i].pa, + pru->mem_regions[i].size, pru->mem_regions[i].va); + } + + ret = pru_rproc_set_id(pru); + if (ret < 0) + return ret; + + platform_set_drvdata(pdev, rproc); + + ret = devm_rproc_add(dev, pru->rproc); + if (ret) { + dev_err(dev, "rproc_add failed: %d\n", ret); + return ret; + } + + pru_rproc_create_debug_entries(rproc); + + dev_dbg(dev, "PRU rproc node %pOF probed successfully\n", np); + + return 0; +} + +static int pru_rproc_remove(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct rproc *rproc = platform_get_drvdata(pdev); + + dev_dbg(dev, "%s: removing rproc %s\n", __func__, rproc->name); + + return 0; +} + +static const struct pru_private_data pru_data = { + .type = PRU_TYPE_PRU, +}; + +static const struct pru_private_data k3_pru_data = { + .type = PRU_TYPE_PRU, + .is_k3 = 1, +}; + +static const struct pru_private_data k3_rtu_data = { + .type = PRU_TYPE_RTU, + .is_k3 = 1, +}; + +static const struct pru_private_data k3_tx_pru_data = { + .type = PRU_TYPE_TX_PRU, + .is_k3 = 1, +}; + +static const struct of_device_id pru_rproc_match[] = { + { .compatible = "ti,am3356-pru", .data = &pru_data }, + { .compatible = "ti,am4376-pru", .data = &pru_data }, + { .compatible = "ti,am5728-pru", .data = &pru_data }, + { .compatible = "ti,k2g-pru", .data = &pru_data }, + { .compatible = "ti,am654-pru", .data = &k3_pru_data }, + { .compatible = "ti,am654-rtu", .data = &k3_rtu_data }, + { .compatible = "ti,am654-tx-pru", .data = &k3_tx_pru_data }, + { .compatible = "ti,j721e-pru", .data = &k3_pru_data }, + { .compatible = "ti,j721e-rtu", .data = &k3_rtu_data }, + { .compatible = "ti,j721e-tx-pru", .data = &k3_tx_pru_data }, + {}, +}; +MODULE_DEVICE_TABLE(of, pru_rproc_match); + +static struct platform_driver pru_rproc_driver = { + .driver = { + .name = "pru-rproc", + .of_match_table = pru_rproc_match, + .suppress_bind_attrs = true, + }, + .probe = pru_rproc_probe, + .remove = pru_rproc_remove, +}; +module_platform_driver(pru_rproc_driver); + +MODULE_AUTHOR("Suman Anna <s-anna@ti.com>"); +MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>"); +MODULE_AUTHOR("Grzegorz Jaszczyk <grzegorz.jaszczyk@linaro.org>"); +MODULE_DESCRIPTION("PRU-ICSS Remote Processor Driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/remoteproc/pru_rproc.h b/drivers/remoteproc/pru_rproc.h new file mode 100644 index 000000000000..8ee9c3171610 --- /dev/null +++ b/drivers/remoteproc/pru_rproc.h @@ -0,0 +1,46 @@ +/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */ +/* + * PRUSS Remote Processor specific types + * + * Copyright (C) 2014-2020 Texas Instruments Incorporated - https://www.ti.com/ + * Suman Anna <s-anna@ti.com> + */ + +#ifndef _PRU_RPROC_H_ +#define _PRU_RPROC_H_ + +/** + * struct pruss_int_map - PRU system events _to_ channel and host mapping + * @event: number of the system event + * @chnl: channel number assigned to a given @event + * @host: host number assigned to a given @chnl + * + * PRU system events are mapped to channels, and these channels are mapped + * to host interrupts. Events can be mapped to channels in a one-to-one or + * many-to-one ratio (multiple events per channel), and channels can be + * mapped to host interrupts in a one-to-one or many-to-one ratio (multiple + * channels per interrupt). + */ +struct pruss_int_map { + u8 event; + u8 chnl; + u8 host; +}; + +/** + * struct pru_irq_rsc - PRU firmware section header for IRQ data + * @type: resource type + * @num_evts: number of described events + * @pru_intc_map: PRU interrupt routing description + * + * The PRU firmware blob can contain optional .pru_irq_map ELF section, which + * provides the PRUSS interrupt mapping description. The pru_irq_rsc struct + * describes resource entry format. + */ +struct pru_irq_rsc { + u8 type; + u8 num_evts; + struct pruss_int_map pru_intc_map[]; +} __packed; + +#endif /* _PRU_RPROC_H_ */ diff --git a/drivers/remoteproc/qcom_common.c b/drivers/remoteproc/qcom_common.c index 085fd73fa23a..4b91e3c9eafa 100644 --- a/drivers/remoteproc/qcom_common.c +++ b/drivers/remoteproc/qcom_common.c @@ -17,6 +17,7 @@ #include <linux/rpmsg/qcom_smd.h> #include <linux/slab.h> #include <linux/soc/qcom/mdt_loader.h> +#include <linux/soc/qcom/smem.h> #include "remoteproc_internal.h" #include "qcom_common.h" @@ -25,6 +26,61 @@ #define to_smd_subdev(d) container_of(d, struct qcom_rproc_subdev, subdev) #define to_ssr_subdev(d) container_of(d, struct qcom_rproc_ssr, subdev) +#define MAX_NUM_OF_SS 10 +#define MAX_REGION_NAME_LENGTH 16 +#define SBL_MINIDUMP_SMEM_ID 602 +#define MD_REGION_VALID ('V' << 24 | 'A' << 16 | 'L' << 8 | 'I' << 0) +#define MD_SS_ENCR_DONE ('D' << 24 | 'O' << 16 | 'N' << 8 | 'E' << 0) +#define MD_SS_ENABLED ('E' << 24 | 'N' << 16 | 'B' << 8 | 'L' << 0) + +/** + * struct minidump_region - Minidump region + * @name : Name of the region to be dumped + * @seq_num: : Use to differentiate regions with same name. + * @valid : This entry to be dumped (if set to 1) + * @address : Physical address of region to be dumped + * @size : Size of the region + */ +struct minidump_region { + char name[MAX_REGION_NAME_LENGTH]; + __le32 seq_num; + __le32 valid; + __le64 address; + __le64 size; +}; + +/** + * struct minidump_subsystem_toc: Subsystem's SMEM Table of content + * @status : Subsystem toc init status + * @enabled : if set to 1, this region would be copied during coredump + * @encryption_status: Encryption status for this subsystem + * @encryption_required : Decides to encrypt the subsystem regions or not + * @region_count : Number of regions added in this subsystem toc + * @regions_baseptr : regions base pointer of the subsystem + */ +struct minidump_subsystem { + __le32 status; + __le32 enabled; + __le32 encryption_status; + __le32 encryption_required; + __le32 region_count; + __le64 regions_baseptr; +}; + +/** + * struct minidump_global_toc: Global Table of Content + * @status : Global Minidump init status + * @md_revision : Minidump revision + * @enabled : Minidump enable status + * @subsystems : Array of subsystems toc + */ +struct minidump_global_toc { + __le32 status; + __le32 md_revision; + __le32 enabled; + struct minidump_subsystem subsystems[MAX_NUM_OF_SS]; +}; + struct qcom_ssr_subsystem { const char *name; struct srcu_notifier_head notifier_list; @@ -34,6 +90,96 @@ struct qcom_ssr_subsystem { static LIST_HEAD(qcom_ssr_subsystem_list); static DEFINE_MUTEX(qcom_ssr_subsys_lock); +static void qcom_minidump_cleanup(struct rproc *rproc) +{ + struct rproc_dump_segment *entry, *tmp; + + list_for_each_entry_safe(entry, tmp, &rproc->dump_segments, node) { + list_del(&entry->node); + kfree(entry->priv); + kfree(entry); + } +} + +static int qcom_add_minidump_segments(struct rproc *rproc, struct minidump_subsystem *subsystem) +{ + struct minidump_region __iomem *ptr; + struct minidump_region region; + int seg_cnt, i; + dma_addr_t da; + size_t size; + char *name; + + if (WARN_ON(!list_empty(&rproc->dump_segments))) { + dev_err(&rproc->dev, "dump segment list already populated\n"); + return -EUCLEAN; + } + + seg_cnt = le32_to_cpu(subsystem->region_count); + ptr = ioremap((unsigned long)le64_to_cpu(subsystem->regions_baseptr), + seg_cnt * sizeof(struct minidump_region)); + if (!ptr) + return -EFAULT; + + for (i = 0; i < seg_cnt; i++) { + memcpy_fromio(®ion, ptr + i, sizeof(region)); + if (region.valid == MD_REGION_VALID) { + name = kstrdup(region.name, GFP_KERNEL); + if (!name) { + iounmap(ptr); + return -ENOMEM; + } + da = le64_to_cpu(region.address); + size = le32_to_cpu(region.size); + rproc_coredump_add_custom_segment(rproc, da, size, NULL, name); + } + } + + iounmap(ptr); + return 0; +} + +void qcom_minidump(struct rproc *rproc, unsigned int minidump_id) +{ + int ret; + struct minidump_subsystem *subsystem; + struct minidump_global_toc *toc; + + /* Get Global minidump ToC*/ + toc = qcom_smem_get(QCOM_SMEM_HOST_ANY, SBL_MINIDUMP_SMEM_ID, NULL); + + /* check if global table pointer exists and init is set */ + if (IS_ERR(toc) || !toc->status) { + dev_err(&rproc->dev, "Minidump TOC not found in SMEM\n"); + return; + } + + /* Get subsystem table of contents using the minidump id */ + subsystem = &toc->subsystems[minidump_id]; + + /** + * Collect minidump if SS ToC is valid and segment table + * is initialized in memory and encryption status is set. + */ + if (subsystem->regions_baseptr == 0 || + le32_to_cpu(subsystem->status) != 1 || + le32_to_cpu(subsystem->enabled) != MD_SS_ENABLED || + le32_to_cpu(subsystem->encryption_status) != MD_SS_ENCR_DONE) { + dev_err(&rproc->dev, "Minidump not ready, skipping\n"); + return; + } + + ret = qcom_add_minidump_segments(rproc, subsystem); + if (ret) { + dev_err(&rproc->dev, "Failed with error: %d while adding minidump entries\n", ret); + goto clean_minidump; + } + rproc_coredump_using_sections(rproc); +clean_minidump: + qcom_minidump_cleanup(rproc); +} +EXPORT_SYMBOL_GPL(qcom_minidump); + static int glink_subdev_start(struct rproc_subdev *subdev) { struct qcom_rproc_glink *glink = to_glink_subdev(subdev); diff --git a/drivers/remoteproc/qcom_common.h b/drivers/remoteproc/qcom_common.h index dfc641c3a98b..c35adf730be0 100644 --- a/drivers/remoteproc/qcom_common.h +++ b/drivers/remoteproc/qcom_common.h @@ -33,6 +33,8 @@ struct qcom_rproc_ssr { struct qcom_ssr_subsystem *info; }; +void qcom_minidump(struct rproc *rproc, unsigned int minidump_id); + void qcom_add_glink_subdev(struct rproc *rproc, struct qcom_rproc_glink *glink, const char *ssr_name); void qcom_remove_glink_subdev(struct rproc *rproc, struct qcom_rproc_glink *glink); @@ -51,6 +53,7 @@ struct qcom_sysmon *qcom_add_sysmon_subdev(struct rproc *rproc, const char *name, int ssctl_instance); void qcom_remove_sysmon_subdev(struct qcom_sysmon *sysmon); +bool qcom_sysmon_shutdown_acked(struct qcom_sysmon *sysmon); #else static inline struct qcom_sysmon *qcom_add_sysmon_subdev(struct rproc *rproc, const char *name, @@ -62,6 +65,11 @@ static inline struct qcom_sysmon *qcom_add_sysmon_subdev(struct rproc *rproc, static inline void qcom_remove_sysmon_subdev(struct qcom_sysmon *sysmon) { } + +static inline bool qcom_sysmon_shutdown_acked(struct qcom_sysmon *sysmon) +{ + return false; +} #endif #endif diff --git a/drivers/remoteproc/qcom_q6v5.c b/drivers/remoteproc/qcom_q6v5.c index fd6fd36268d9..9627a950928e 100644 --- a/drivers/remoteproc/qcom_q6v5.c +++ b/drivers/remoteproc/qcom_q6v5.c @@ -13,6 +13,7 @@ #include <linux/soc/qcom/smem.h> #include <linux/soc/qcom/smem_state.h> #include <linux/remoteproc.h> +#include "qcom_common.h" #include "qcom_q6v5.h" #define Q6V5_PANIC_DELAY_MS 200 @@ -146,15 +147,20 @@ static irqreturn_t q6v5_stop_interrupt(int irq, void *data) /** * qcom_q6v5_request_stop() - request the remote processor to stop * @q6v5: reference to qcom_q6v5 context + * @sysmon: reference to the remote's sysmon instance, or NULL * * Return: 0 on success, negative errno on failure */ -int qcom_q6v5_request_stop(struct qcom_q6v5 *q6v5) +int qcom_q6v5_request_stop(struct qcom_q6v5 *q6v5, struct qcom_sysmon *sysmon) { int ret; q6v5->running = false; + /* Don't perform SMP2P dance if sysmon already shut down the remote */ + if (qcom_sysmon_shutdown_acked(sysmon)) + return 0; + qcom_smem_state_update_bits(q6v5->state, BIT(q6v5->stop_bit), BIT(q6v5->stop_bit)); diff --git a/drivers/remoteproc/qcom_q6v5.h b/drivers/remoteproc/qcom_q6v5.h index c4ed887c1499..1c212f670cbc 100644 --- a/drivers/remoteproc/qcom_q6v5.h +++ b/drivers/remoteproc/qcom_q6v5.h @@ -8,6 +8,7 @@ struct rproc; struct qcom_smem_state; +struct qcom_sysmon; struct qcom_q6v5 { struct device *dev; @@ -40,7 +41,7 @@ int qcom_q6v5_init(struct qcom_q6v5 *q6v5, struct platform_device *pdev, int qcom_q6v5_prepare(struct qcom_q6v5 *q6v5); int qcom_q6v5_unprepare(struct qcom_q6v5 *q6v5); -int qcom_q6v5_request_stop(struct qcom_q6v5 *q6v5); +int qcom_q6v5_request_stop(struct qcom_q6v5 *q6v5, struct qcom_sysmon *sysmon); int qcom_q6v5_wait_for_start(struct qcom_q6v5 *q6v5, int timeout); unsigned long qcom_q6v5_panic(struct qcom_q6v5 *q6v5); diff --git a/drivers/remoteproc/qcom_q6v5_adsp.c b/drivers/remoteproc/qcom_q6v5_adsp.c index efb2c1aa80a3..e02450225e4a 100644 --- a/drivers/remoteproc/qcom_q6v5_adsp.c +++ b/drivers/remoteproc/qcom_q6v5_adsp.c @@ -193,8 +193,10 @@ static int adsp_start(struct rproc *rproc) dev_pm_genpd_set_performance_state(adsp->dev, INT_MAX); ret = pm_runtime_get_sync(adsp->dev); - if (ret) + if (ret) { + pm_runtime_put_noidle(adsp->dev); goto disable_xo_clk; + } ret = clk_bulk_prepare_enable(adsp->num_clks, adsp->clks); if (ret) { @@ -264,7 +266,7 @@ static int adsp_stop(struct rproc *rproc) int handover; int ret; - ret = qcom_q6v5_request_stop(&adsp->q6v5); + ret = qcom_q6v5_request_stop(&adsp->q6v5, adsp->sysmon); if (ret == -ETIMEDOUT) dev_err(adsp->dev, "timed out on wait\n"); @@ -362,15 +364,12 @@ static int adsp_init_mmio(struct qcom_adsp *adsp, struct platform_device *pdev) { struct device_node *syscon; - struct resource *res; int ret; - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - adsp->qdsp6ss_base = devm_ioremap(&pdev->dev, res->start, - resource_size(res)); - if (!adsp->qdsp6ss_base) { + adsp->qdsp6ss_base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(adsp->qdsp6ss_base)) { dev_err(adsp->dev, "failed to map QDSP6SS registers\n"); - return -ENOMEM; + return PTR_ERR(adsp->qdsp6ss_base); } syscon = of_parse_phandle(pdev->dev.of_node, "qcom,halt-regs", 0); diff --git a/drivers/remoteproc/qcom_q6v5_mss.c b/drivers/remoteproc/qcom_q6v5_mss.c index eb3457a6c3b7..66106ba25ba3 100644 --- a/drivers/remoteproc/qcom_q6v5_mss.c +++ b/drivers/remoteproc/qcom_q6v5_mss.c @@ -132,6 +132,7 @@ struct qcom_mss_reg_res { struct rproc_hexagon_res { const char *hexagon_mba_image; struct qcom_mss_reg_res *proxy_supply; + struct qcom_mss_reg_res *fallback_proxy_supply; struct qcom_mss_reg_res *active_supply; char **proxy_clk_names; char **reset_clk_names; @@ -177,16 +178,17 @@ struct q6v5 { int proxy_pd_count; struct reg_info active_regs[1]; - struct reg_info proxy_regs[3]; + struct reg_info proxy_regs[1]; + struct reg_info fallback_proxy_regs[2]; int active_reg_count; int proxy_reg_count; + int fallback_proxy_reg_count; bool dump_mba_loaded; size_t current_dump_size; size_t total_dump_size; phys_addr_t mba_phys; - void *mba_region; size_t mba_size; size_t dp_size; @@ -349,8 +351,11 @@ static int q6v5_pds_enable(struct q6v5 *qproc, struct device **pds, for (i = 0; i < pd_count; i++) { dev_pm_genpd_set_performance_state(pds[i], INT_MAX); ret = pm_runtime_get_sync(pds[i]); - if (ret < 0) + if (ret < 0) { + pm_runtime_put_noidle(pds[i]); + dev_pm_genpd_set_performance_state(pds[i], 0); goto unroll_pd_votes; + } } return 0; @@ -405,7 +410,7 @@ static int q6v5_xfer_mem_ownership(struct q6v5 *qproc, int *current_perm, current_perm, next, perms); } -static void q6v5_debug_policy_load(struct q6v5 *qproc) +static void q6v5_debug_policy_load(struct q6v5 *qproc, void *mba_region) { const struct firmware *dp_fw; @@ -413,7 +418,7 @@ static void q6v5_debug_policy_load(struct q6v5 *qproc) return; if (SZ_1M + dp_fw->size <= qproc->mba_size) { - memcpy(qproc->mba_region + SZ_1M, dp_fw->data, dp_fw->size); + memcpy(mba_region + SZ_1M, dp_fw->data, dp_fw->size); qproc->dp_size = dp_fw->size; } @@ -423,6 +428,7 @@ static void q6v5_debug_policy_load(struct q6v5 *qproc) static int q6v5_load(struct rproc *rproc, const struct firmware *fw) { struct q6v5 *qproc = rproc->priv; + void *mba_region; /* MBA is restricted to a maximum size of 1M */ if (fw->size > qproc->mba_size || fw->size > SZ_1M) { @@ -430,8 +436,16 @@ static int q6v5_load(struct rproc *rproc, const struct firmware *fw) return -EINVAL; } - memcpy(qproc->mba_region, fw->data, fw->size); - q6v5_debug_policy_load(qproc); + mba_region = memremap(qproc->mba_phys, qproc->mba_size, MEMREMAP_WC); + if (!mba_region) { + dev_err(qproc->dev, "unable to map memory region: %pa+%zx\n", + &qproc->mba_phys, qproc->mba_size); + return -EBUSY; + } + + memcpy(mba_region, fw->data, fw->size); + q6v5_debug_policy_load(qproc, mba_region); + memunmap(mba_region); return 0; } @@ -538,6 +552,7 @@ static void q6v5_dump_mba_logs(struct q6v5 *qproc) { struct rproc *rproc = qproc->rproc; void *data; + void *mba_region; if (!qproc->has_mba_logs) return; @@ -546,12 +561,16 @@ static void q6v5_dump_mba_logs(struct q6v5 *qproc) qproc->mba_size)) return; - data = vmalloc(MBA_LOG_SIZE); - if (!data) + mba_region = memremap(qproc->mba_phys, qproc->mba_size, MEMREMAP_WC); + if (!mba_region) return; - memcpy(data, qproc->mba_region, MBA_LOG_SIZE); - dev_coredumpv(&rproc->dev, data, MBA_LOG_SIZE, GFP_KERNEL); + data = vmalloc(MBA_LOG_SIZE); + if (data) { + memcpy(data, mba_region, MBA_LOG_SIZE); + dev_coredumpv(&rproc->dev, data, MBA_LOG_SIZE, GFP_KERNEL); + } + memunmap(mba_region); } static int q6v5proc_reset(struct q6v5 *qproc) @@ -890,11 +909,18 @@ static int q6v5_mba_load(struct q6v5 *qproc) goto disable_active_pds; } + ret = q6v5_regulator_enable(qproc, qproc->fallback_proxy_regs, + qproc->fallback_proxy_reg_count); + if (ret) { + dev_err(qproc->dev, "failed to enable fallback proxy supplies\n"); + goto disable_proxy_pds; + } + ret = q6v5_regulator_enable(qproc, qproc->proxy_regs, qproc->proxy_reg_count); if (ret) { dev_err(qproc->dev, "failed to enable proxy supplies\n"); - goto disable_proxy_pds; + goto disable_fallback_proxy_reg; } ret = q6v5_clk_enable(qproc->dev, qproc->proxy_clks, @@ -1008,6 +1034,9 @@ disable_proxy_clk: disable_proxy_reg: q6v5_regulator_disable(qproc, qproc->proxy_regs, qproc->proxy_reg_count); +disable_fallback_proxy_reg: + q6v5_regulator_disable(qproc, qproc->fallback_proxy_regs, + qproc->fallback_proxy_reg_count); disable_proxy_pds: q6v5_pds_disable(qproc, qproc->proxy_pds, qproc->proxy_pd_count); disable_active_pds: @@ -1063,6 +1092,8 @@ static void q6v5_mba_reclaim(struct q6v5 *qproc) qproc->proxy_pd_count); q6v5_clk_disable(qproc->dev, qproc->proxy_clks, qproc->proxy_clk_count); + q6v5_regulator_disable(qproc, qproc->fallback_proxy_regs, + qproc->fallback_proxy_reg_count); q6v5_regulator_disable(qproc, qproc->proxy_regs, qproc->proxy_reg_count); } @@ -1179,7 +1210,7 @@ static int q6v5_mpss_load(struct q6v5 *qproc) goto release_firmware; } - ptr = ioremap_wc(qproc->mpss_phys + offset, phdr->p_memsz); + ptr = memremap(qproc->mpss_phys + offset, phdr->p_memsz, MEMREMAP_WC); if (!ptr) { dev_err(qproc->dev, "unable to map memory region: %pa+%zx-%x\n", @@ -1194,7 +1225,7 @@ static int q6v5_mpss_load(struct q6v5 *qproc) "failed to load segment %d from truncated file %s\n", i, fw_name); ret = -EINVAL; - iounmap(ptr); + memunmap(ptr); goto release_firmware; } @@ -1206,7 +1237,7 @@ static int q6v5_mpss_load(struct q6v5 *qproc) ptr, phdr->p_filesz); if (ret) { dev_err(qproc->dev, "failed to load %s\n", fw_name); - iounmap(ptr); + memunmap(ptr); goto release_firmware; } @@ -1217,7 +1248,7 @@ static int q6v5_mpss_load(struct q6v5 *qproc) memset(ptr + phdr->p_filesz, 0, phdr->p_memsz - phdr->p_filesz); } - iounmap(ptr); + memunmap(ptr); size += phdr->p_memsz; code_length = readl(qproc->rmb_base + RMB_PMI_CODE_LENGTH_REG); @@ -1284,11 +1315,11 @@ static void qcom_q6v5_dump_segment(struct rproc *rproc, } if (!ret) - ptr = ioremap_wc(qproc->mpss_phys + offset + cp_offset, size); + ptr = memremap(qproc->mpss_phys + offset + cp_offset, size, MEMREMAP_WC); if (ptr) { memcpy(dest, ptr, size); - iounmap(ptr); + memunmap(ptr); } else { memset(dest, 0xff, size); } @@ -1355,7 +1386,7 @@ static int q6v5_stop(struct rproc *rproc) struct q6v5 *qproc = (struct q6v5 *)rproc->priv; int ret; - ret = qcom_q6v5_request_stop(&qproc->q6v5); + ret = qcom_q6v5_request_stop(&qproc->q6v5, qproc->sysmon); if (ret == -ETIMEDOUT) dev_err(qproc->dev, "timed out on wait\n"); @@ -1423,6 +1454,8 @@ static void qcom_msa_handover(struct qcom_q6v5 *q6v5) qproc->proxy_clk_count); q6v5_regulator_disable(qproc, qproc->proxy_regs, qproc->proxy_reg_count); + q6v5_regulator_disable(qproc, qproc->fallback_proxy_regs, + qproc->fallback_proxy_reg_count); q6v5_pds_disable(qproc, qproc->proxy_pds, qproc->proxy_pd_count); } @@ -1588,12 +1621,6 @@ static int q6v5_alloc_memory_region(struct q6v5 *qproc) qproc->mba_phys = r.start; qproc->mba_size = resource_size(&r); - qproc->mba_region = devm_ioremap_wc(qproc->dev, qproc->mba_phys, qproc->mba_size); - if (!qproc->mba_region) { - dev_err(qproc->dev, "unable to map memory region: %pa+%zx\n", - &r.start, qproc->mba_size); - return -EBUSY; - } if (!child) { node = of_parse_phandle(qproc->dev->of_node, @@ -1717,11 +1744,22 @@ static int q6v5_probe(struct platform_device *pdev) ret = q6v5_pds_attach(&pdev->dev, qproc->proxy_pds, desc->proxy_pd_names); - if (ret < 0) { + /* Fallback to regulators for old device trees */ + if (ret == -ENODATA && desc->fallback_proxy_supply) { + ret = q6v5_regulator_init(&pdev->dev, + qproc->fallback_proxy_regs, + desc->fallback_proxy_supply); + if (ret < 0) { + dev_err(&pdev->dev, "Failed to get fallback proxy regulators.\n"); + goto detach_active_pds; + } + qproc->fallback_proxy_reg_count = ret; + } else if (ret < 0) { dev_err(&pdev->dev, "Failed to init power domains\n"); goto detach_active_pds; + } else { + qproc->proxy_pd_count = ret; } - qproc->proxy_pd_count = ret; qproc->has_alt_reset = desc->has_alt_reset; ret = q6v5_init_reset(qproc); @@ -1923,6 +1961,13 @@ static const struct rproc_hexagon_res msm8916_mss = { .hexagon_mba_image = "mba.mbn", .proxy_supply = (struct qcom_mss_reg_res[]) { { + .supply = "pll", + .uA = 100000, + }, + {} + }, + .fallback_proxy_supply = (struct qcom_mss_reg_res[]) { + { .supply = "mx", .uV = 1050000, }, @@ -1930,10 +1975,6 @@ static const struct rproc_hexagon_res msm8916_mss = { .supply = "cx", .uA = 100000, }, - { - .supply = "pll", - .uA = 100000, - }, {} }, .proxy_clk_names = (char*[]){ @@ -1946,6 +1987,11 @@ static const struct rproc_hexagon_res msm8916_mss = { "mem", NULL }, + .proxy_pd_names = (char*[]){ + "mx", + "cx", + NULL + }, .need_mem_protection = false, .has_alt_reset = false, .has_mba_logs = false, @@ -1957,6 +2003,13 @@ static const struct rproc_hexagon_res msm8974_mss = { .hexagon_mba_image = "mba.b00", .proxy_supply = (struct qcom_mss_reg_res[]) { { + .supply = "pll", + .uA = 100000, + }, + {} + }, + .fallback_proxy_supply = (struct qcom_mss_reg_res[]) { + { .supply = "mx", .uV = 1050000, }, @@ -1964,10 +2017,6 @@ static const struct rproc_hexagon_res msm8974_mss = { .supply = "cx", .uA = 100000, }, - { - .supply = "pll", - .uA = 100000, - }, {} }, .active_supply = (struct qcom_mss_reg_res[]) { @@ -1988,6 +2037,11 @@ static const struct rproc_hexagon_res msm8974_mss = { "mem", NULL }, + .proxy_pd_names = (char*[]){ + "mx", + "cx", + NULL + }, .need_mem_protection = false, .has_alt_reset = false, .has_mba_logs = false, diff --git a/drivers/remoteproc/qcom_q6v5_pas.c b/drivers/remoteproc/qcom_q6v5_pas.c index 3837f23995e0..ee586226e438 100644 --- a/drivers/remoteproc/qcom_q6v5_pas.c +++ b/drivers/remoteproc/qcom_q6v5_pas.c @@ -33,6 +33,7 @@ struct adsp_data { int crash_reason_smem; const char *firmware_name; int pas_id; + unsigned int minidump_id; bool has_aggre2_clk; bool auto_boot; @@ -63,6 +64,7 @@ struct qcom_adsp { int proxy_pd_count; int pas_id; + unsigned int minidump_id; int crash_reason_smem; bool has_aggre2_clk; const char *info_name; @@ -81,6 +83,13 @@ struct qcom_adsp { struct qcom_sysmon *sysmon; }; +static void adsp_minidump(struct rproc *rproc) +{ + struct qcom_adsp *adsp = rproc->priv; + + qcom_minidump(rproc, adsp->minidump_id); +} + static int adsp_pds_enable(struct qcom_adsp *adsp, struct device **pds, size_t pd_count) { @@ -90,8 +99,11 @@ static int adsp_pds_enable(struct qcom_adsp *adsp, struct device **pds, for (i = 0; i < pd_count; i++) { dev_pm_genpd_set_performance_state(pds[i], INT_MAX); ret = pm_runtime_get_sync(pds[i]); - if (ret < 0) + if (ret < 0) { + pm_runtime_put_noidle(pds[i]); + dev_pm_genpd_set_performance_state(pds[i], 0); goto unroll_pd_votes; + } } return 0; @@ -214,7 +226,7 @@ static int adsp_stop(struct rproc *rproc) int handover; int ret; - ret = qcom_q6v5_request_stop(&adsp->q6v5); + ret = qcom_q6v5_request_stop(&adsp->q6v5, adsp->sysmon); if (ret == -ETIMEDOUT) dev_err(adsp->dev, "timed out on wait\n"); @@ -258,6 +270,15 @@ static const struct rproc_ops adsp_ops = { .panic = adsp_panic, }; +static const struct rproc_ops adsp_minidump_ops = { + .start = adsp_start, + .stop = adsp_stop, + .da_to_va = adsp_da_to_va, + .load = adsp_load, + .panic = adsp_panic, + .coredump = adsp_minidump, +}; + static int adsp_init_clock(struct qcom_adsp *adsp) { int ret; @@ -383,6 +404,7 @@ static int adsp_probe(struct platform_device *pdev) struct qcom_adsp *adsp; struct rproc *rproc; const char *fw_name; + const struct rproc_ops *ops = &adsp_ops; int ret; desc = of_device_get_match_data(&pdev->dev); @@ -398,8 +420,11 @@ static int adsp_probe(struct platform_device *pdev) if (ret < 0 && ret != -EINVAL) return ret; - rproc = rproc_alloc(&pdev->dev, pdev->name, &adsp_ops, - fw_name, sizeof(*adsp)); + if (desc->minidump_id) + ops = &adsp_minidump_ops; + + rproc = rproc_alloc(&pdev->dev, pdev->name, ops, fw_name, sizeof(*adsp)); + if (!rproc) { dev_err(&pdev->dev, "unable to allocate remoteproc\n"); return -ENOMEM; @@ -411,6 +436,7 @@ static int adsp_probe(struct platform_device *pdev) adsp = (struct qcom_adsp *)rproc->priv; adsp->dev = &pdev->dev; adsp->rproc = rproc; + adsp->minidump_id = desc->minidump_id; adsp->pas_id = desc->pas_id; adsp->has_aggre2_clk = desc->has_aggre2_clk; adsp->info_name = desc->sysmon_name; @@ -607,6 +633,7 @@ static const struct adsp_data mpss_resource_init = { .crash_reason_smem = 421, .firmware_name = "modem.mdt", .pas_id = 4, + .minidump_id = 3, .has_aggre2_clk = false, .auto_boot = false, .active_pd_names = (char*[]){ diff --git a/drivers/remoteproc/qcom_q6v5_wcss.c b/drivers/remoteproc/qcom_q6v5_wcss.c index 8846ef0b0f1a..78ebe1168b33 100644 --- a/drivers/remoteproc/qcom_q6v5_wcss.c +++ b/drivers/remoteproc/qcom_q6v5_wcss.c @@ -390,7 +390,7 @@ static int q6v5_wcss_stop(struct rproc *rproc) int ret; /* WCSS powerdown */ - ret = qcom_q6v5_request_stop(&wcss->q6v5); + ret = qcom_q6v5_request_stop(&wcss->q6v5, NULL); if (ret == -ETIMEDOUT) { dev_err(wcss->dev, "timed out on wait\n"); return ret; diff --git a/drivers/remoteproc/qcom_sysmon.c b/drivers/remoteproc/qcom_sysmon.c index 9eb2f6bccea6..9fca81492863 100644 --- a/drivers/remoteproc/qcom_sysmon.c +++ b/drivers/remoteproc/qcom_sysmon.c @@ -22,6 +22,9 @@ struct qcom_sysmon { struct rproc_subdev subdev; struct rproc *rproc; + int state; + struct mutex state_lock; + struct list_head node; const char *name; @@ -41,6 +44,7 @@ struct qcom_sysmon { struct mutex lock; bool ssr_ack; + bool shutdown_acked; struct qmi_handle qmi; struct sockaddr_qrtr ssctl; @@ -112,10 +116,13 @@ out_unlock: /** * sysmon_request_shutdown() - request graceful shutdown of remote * @sysmon: sysmon context + * + * Return: boolean indicator of the remote processor acking the request */ -static void sysmon_request_shutdown(struct qcom_sysmon *sysmon) +static bool sysmon_request_shutdown(struct qcom_sysmon *sysmon) { char *req = "ssr:shutdown"; + bool acked = false; int ret; mutex_lock(&sysmon->lock); @@ -138,9 +145,13 @@ static void sysmon_request_shutdown(struct qcom_sysmon *sysmon) if (!sysmon->ssr_ack) dev_err(sysmon->dev, "unexpected response to sysmon shutdown request\n"); + else + acked = true; out_unlock: mutex_unlock(&sysmon->lock); + + return acked; } static int sysmon_callback(struct rpmsg_device *rpdev, void *data, int count, @@ -283,7 +294,7 @@ static void sysmon_ind_cb(struct qmi_handle *qmi, struct sockaddr_qrtr *sq, complete(&sysmon->ind_comp); } -static struct qmi_msg_handler qmi_indication_handler[] = { +static const struct qmi_msg_handler qmi_indication_handler[] = { { .type = QMI_INDICATION, .msg_id = SSCTL_SHUTDOWN_READY_IND, @@ -294,14 +305,33 @@ static struct qmi_msg_handler qmi_indication_handler[] = { {} }; +static bool ssctl_request_shutdown_wait(struct qcom_sysmon *sysmon) +{ + int ret; + + ret = wait_for_completion_timeout(&sysmon->shutdown_comp, 10 * HZ); + if (ret) + return true; + + ret = try_wait_for_completion(&sysmon->ind_comp); + if (ret) + return true; + + dev_err(sysmon->dev, "timeout waiting for shutdown ack\n"); + return false; +} + /** * ssctl_request_shutdown() - request shutdown via SSCTL QMI service * @sysmon: sysmon context + * + * Return: boolean indicator of the remote processor acking the request */ -static void ssctl_request_shutdown(struct qcom_sysmon *sysmon) +static bool ssctl_request_shutdown(struct qcom_sysmon *sysmon) { struct ssctl_shutdown_resp resp; struct qmi_txn txn; + bool acked = false; int ret; reinit_completion(&sysmon->ind_comp); @@ -309,7 +339,7 @@ static void ssctl_request_shutdown(struct qcom_sysmon *sysmon) ret = qmi_txn_init(&sysmon->qmi, &txn, ssctl_shutdown_resp_ei, &resp); if (ret < 0) { dev_err(sysmon->dev, "failed to allocate QMI txn\n"); - return; + return false; } ret = qmi_send_request(&sysmon->qmi, &sysmon->ssctl, &txn, @@ -317,27 +347,23 @@ static void ssctl_request_shutdown(struct qcom_sysmon *sysmon) if (ret < 0) { dev_err(sysmon->dev, "failed to send shutdown request\n"); qmi_txn_cancel(&txn); - return; + return false; } ret = qmi_txn_wait(&txn, 5 * HZ); - if (ret < 0) - dev_err(sysmon->dev, "failed receiving QMI response\n"); - else if (resp.resp.result) - dev_err(sysmon->dev, "shutdown request failed\n"); - else + if (ret < 0) { + dev_err(sysmon->dev, "timeout waiting for shutdown response\n"); + } else if (resp.resp.result) { + dev_err(sysmon->dev, "shutdown request rejected\n"); + } else { dev_dbg(sysmon->dev, "shutdown request completed\n"); - - if (sysmon->shutdown_irq > 0) { - ret = wait_for_completion_timeout(&sysmon->shutdown_comp, - 10 * HZ); - if (!ret) { - ret = try_wait_for_completion(&sysmon->ind_comp); - if (!ret) - dev_err(sysmon->dev, - "timeout waiting for shutdown ack\n"); - } + acked = true; } + + if (sysmon->shutdown_irq > 0) + return ssctl_request_shutdown_wait(sysmon); + + return acked; } /** @@ -371,18 +397,18 @@ static void ssctl_send_event(struct qcom_sysmon *sysmon, SSCTL_SUBSYS_EVENT_REQ, 40, ssctl_subsys_event_req_ei, &req); if (ret < 0) { - dev_err(sysmon->dev, "failed to send shutdown request\n"); + dev_err(sysmon->dev, "failed to send subsystem event\n"); qmi_txn_cancel(&txn); return; } ret = qmi_txn_wait(&txn, 5 * HZ); if (ret < 0) - dev_err(sysmon->dev, "failed receiving QMI response\n"); + dev_err(sysmon->dev, "timeout waiting for subsystem event response\n"); else if (resp.resp.result) - dev_err(sysmon->dev, "ssr event send failed\n"); + dev_err(sysmon->dev, "subsystem event rejected\n"); else - dev_dbg(sysmon->dev, "ssr event send completed\n"); + dev_dbg(sysmon->dev, "subsystem event accepted\n"); } /** @@ -448,7 +474,10 @@ static int sysmon_prepare(struct rproc_subdev *subdev) .ssr_event = SSCTL_SSR_EVENT_BEFORE_POWERUP }; + mutex_lock(&sysmon->state_lock); + sysmon->state = SSCTL_SSR_EVENT_BEFORE_POWERUP; blocking_notifier_call_chain(&sysmon_notifiers, 0, (void *)&event); + mutex_unlock(&sysmon->state_lock); return 0; } @@ -472,20 +501,25 @@ static int sysmon_start(struct rproc_subdev *subdev) .ssr_event = SSCTL_SSR_EVENT_AFTER_POWERUP }; + mutex_lock(&sysmon->state_lock); + sysmon->state = SSCTL_SSR_EVENT_AFTER_POWERUP; blocking_notifier_call_chain(&sysmon_notifiers, 0, (void *)&event); + mutex_unlock(&sysmon->state_lock); mutex_lock(&sysmon_lock); list_for_each_entry(target, &sysmon_list, node) { - if (target == sysmon || - target->rproc->state != RPROC_RUNNING) + if (target == sysmon) continue; + mutex_lock(&target->state_lock); event.subsys_name = target->name; + event.ssr_event = target->state; if (sysmon->ssctl_version == 2) ssctl_send_event(sysmon, &event); else if (sysmon->ept) sysmon_send_event(sysmon, &event); + mutex_unlock(&target->state_lock); } mutex_unlock(&sysmon_lock); @@ -500,16 +534,21 @@ static void sysmon_stop(struct rproc_subdev *subdev, bool crashed) .ssr_event = SSCTL_SSR_EVENT_BEFORE_SHUTDOWN }; + sysmon->shutdown_acked = false; + + mutex_lock(&sysmon->state_lock); + sysmon->state = SSCTL_SSR_EVENT_BEFORE_SHUTDOWN; blocking_notifier_call_chain(&sysmon_notifiers, 0, (void *)&event); + mutex_unlock(&sysmon->state_lock); /* Don't request graceful shutdown if we've crashed */ if (crashed) return; if (sysmon->ssctl_version) - ssctl_request_shutdown(sysmon); + sysmon->shutdown_acked = ssctl_request_shutdown(sysmon); else if (sysmon->ept) - sysmon_request_shutdown(sysmon); + sysmon->shutdown_acked = sysmon_request_shutdown(sysmon); } static void sysmon_unprepare(struct rproc_subdev *subdev) @@ -521,7 +560,10 @@ static void sysmon_unprepare(struct rproc_subdev *subdev) .ssr_event = SSCTL_SSR_EVENT_AFTER_SHUTDOWN }; + mutex_lock(&sysmon->state_lock); + sysmon->state = SSCTL_SSR_EVENT_AFTER_SHUTDOWN; blocking_notifier_call_chain(&sysmon_notifiers, 0, (void *)&event); + mutex_unlock(&sysmon->state_lock); } /** @@ -534,11 +576,10 @@ static int sysmon_notify(struct notifier_block *nb, unsigned long event, void *data) { struct qcom_sysmon *sysmon = container_of(nb, struct qcom_sysmon, nb); - struct rproc *rproc = sysmon->rproc; struct sysmon_event *sysmon_event = data; /* Skip non-running rprocs and the originating instance */ - if (rproc->state != RPROC_RUNNING || + if (sysmon->state != SSCTL_SSR_EVENT_AFTER_POWERUP || !strcmp(sysmon_event->subsys_name, sysmon->name)) { dev_dbg(sysmon->dev, "not notifying %s\n", sysmon->name); return NOTIFY_DONE; @@ -591,6 +632,7 @@ struct qcom_sysmon *qcom_add_sysmon_subdev(struct rproc *rproc, init_completion(&sysmon->ind_comp); init_completion(&sysmon->shutdown_comp); mutex_init(&sysmon->lock); + mutex_init(&sysmon->state_lock); sysmon->shutdown_irq = of_irq_get_byname(sysmon->dev->of_node, "shutdown-ack"); @@ -665,6 +707,22 @@ void qcom_remove_sysmon_subdev(struct qcom_sysmon *sysmon) EXPORT_SYMBOL_GPL(qcom_remove_sysmon_subdev); /** + * qcom_sysmon_shutdown_acked() - query the success of the last shutdown + * @sysmon: sysmon context + * + * When sysmon is used to request a graceful shutdown of the remote processor + * this can be used by the remoteproc driver to query the success, in order to + * know if it should fall back to other means of requesting a shutdown. + * + * Return: boolean indicator of the success of the last shutdown request + */ +bool qcom_sysmon_shutdown_acked(struct qcom_sysmon *sysmon) +{ + return sysmon && sysmon->shutdown_acked; +} +EXPORT_SYMBOL_GPL(qcom_sysmon_shutdown_acked); + +/** * sysmon_probe() - probe sys_mon channel * @rpdev: rpmsg device handle * diff --git a/drivers/remoteproc/qcom_wcnss.c b/drivers/remoteproc/qcom_wcnss.c index e2573f79a137..f95854255c70 100644 --- a/drivers/remoteproc/qcom_wcnss.c +++ b/drivers/remoteproc/qcom_wcnss.c @@ -17,6 +17,8 @@ #include <linux/of_address.h> #include <linux/of_device.h> #include <linux/platform_device.h> +#include <linux/pm_domain.h> +#include <linux/pm_runtime.h> #include <linux/qcom_scm.h> #include <linux/regulator/consumer.h> #include <linux/remoteproc.h> @@ -51,12 +53,15 @@ #define WCNSS_PMU_XO_MODE_19p2 0 #define WCNSS_PMU_XO_MODE_48 3 +#define WCNSS_MAX_PDS 2 + struct wcnss_data { size_t pmu_offset; size_t spare_offset; + const char *pd_names[WCNSS_MAX_PDS]; const struct wcnss_vreg_info *vregs; - size_t num_vregs; + size_t num_vregs, num_pd_vregs; }; struct qcom_wcnss { @@ -80,6 +85,8 @@ struct qcom_wcnss { struct mutex iris_lock; struct qcom_iris *iris; + struct device *pds[WCNSS_MAX_PDS]; + size_t num_pds; struct regulator_bulk_data *vregs; size_t num_vregs; @@ -111,24 +118,28 @@ static const struct wcnss_data pronto_v1_data = { .pmu_offset = 0x1004, .spare_offset = 0x1088, + .pd_names = { "mx", "cx" }, .vregs = (struct wcnss_vreg_info[]) { { "vddmx", 950000, 1150000, 0 }, { "vddcx", .super_turbo = true}, { "vddpx", 1800000, 1800000, 0 }, }, - .num_vregs = 3, + .num_pd_vregs = 2, + .num_vregs = 1, }; static const struct wcnss_data pronto_v2_data = { .pmu_offset = 0x1004, .spare_offset = 0x1088, + .pd_names = { "mx", "cx" }, .vregs = (struct wcnss_vreg_info[]) { { "vddmx", 1287500, 1287500, 0 }, { "vddcx", .super_turbo = true }, { "vddpx", 1800000, 1800000, 0 }, }, - .num_vregs = 3, + .num_pd_vregs = 2, + .num_vregs = 1, }; void qcom_wcnss_assign_iris(struct qcom_wcnss *wcnss, @@ -219,7 +230,7 @@ static void wcnss_configure_iris(struct qcom_wcnss *wcnss) static int wcnss_start(struct rproc *rproc) { struct qcom_wcnss *wcnss = (struct qcom_wcnss *)rproc->priv; - int ret; + int ret, i; mutex_lock(&wcnss->iris_lock); if (!wcnss->iris) { @@ -228,9 +239,18 @@ static int wcnss_start(struct rproc *rproc) goto release_iris_lock; } + for (i = 0; i < wcnss->num_pds; i++) { + dev_pm_genpd_set_performance_state(wcnss->pds[i], INT_MAX); + ret = pm_runtime_get_sync(wcnss->pds[i]); + if (ret < 0) { + pm_runtime_put_noidle(wcnss->pds[i]); + goto disable_pds; + } + } + ret = regulator_bulk_enable(wcnss->num_vregs, wcnss->vregs); if (ret) - goto release_iris_lock; + goto disable_pds; ret = qcom_iris_enable(wcnss->iris); if (ret) @@ -262,6 +282,11 @@ disable_iris: qcom_iris_disable(wcnss->iris); disable_regulators: regulator_bulk_disable(wcnss->num_vregs, wcnss->vregs); +disable_pds: + for (i--; i >= 0; i--) { + pm_runtime_put(wcnss->pds[i]); + dev_pm_genpd_set_performance_state(wcnss->pds[i], 0); + } release_iris_lock: mutex_unlock(&wcnss->iris_lock); @@ -371,14 +396,54 @@ static irqreturn_t wcnss_stop_ack_interrupt(int irq, void *dev) return IRQ_HANDLED; } +static int wcnss_init_pds(struct qcom_wcnss *wcnss, + const char * const pd_names[WCNSS_MAX_PDS]) +{ + int i, ret; + + for (i = 0; i < WCNSS_MAX_PDS; i++) { + if (!pd_names[i]) + break; + + wcnss->pds[i] = dev_pm_domain_attach_by_name(wcnss->dev, pd_names[i]); + if (IS_ERR_OR_NULL(wcnss->pds[i])) { + ret = PTR_ERR(wcnss->pds[i]) ? : -ENODATA; + for (i--; i >= 0; i--) + dev_pm_domain_detach(wcnss->pds[i], false); + return ret; + } + } + wcnss->num_pds = i; + + return 0; +} + +static void wcnss_release_pds(struct qcom_wcnss *wcnss) +{ + int i; + + for (i = 0; i < wcnss->num_pds; i++) + dev_pm_domain_detach(wcnss->pds[i], false); +} + static int wcnss_init_regulators(struct qcom_wcnss *wcnss, const struct wcnss_vreg_info *info, - int num_vregs) + int num_vregs, int num_pd_vregs) { struct regulator_bulk_data *bulk; int ret; int i; + /* + * If attaching the power domains suceeded we can skip requesting + * the regulators for the power domains. For old device trees we need to + * reserve extra space to manage them through the regulator interface. + */ + if (wcnss->num_pds) + info += num_pd_vregs; + else + num_vregs += num_pd_vregs; + bulk = devm_kcalloc(wcnss->dev, num_vregs, sizeof(struct regulator_bulk_data), GFP_KERNEL); @@ -514,33 +579,42 @@ static int wcnss_probe(struct platform_device *pdev) wcnss->pmu_cfg = mmio + data->pmu_offset; wcnss->spare_out = mmio + data->spare_offset; - ret = wcnss_init_regulators(wcnss, data->vregs, data->num_vregs); - if (ret) + /* + * We might need to fallback to regulators instead of power domains + * for old device trees. Don't report an error in that case. + */ + ret = wcnss_init_pds(wcnss, data->pd_names); + if (ret && (ret != -ENODATA || !data->num_pd_vregs)) goto free_rproc; + ret = wcnss_init_regulators(wcnss, data->vregs, data->num_vregs, + data->num_pd_vregs); + if (ret) + goto detach_pds; + ret = wcnss_request_irq(wcnss, pdev, "wdog", false, wcnss_wdog_interrupt); if (ret < 0) - goto free_rproc; + goto detach_pds; wcnss->wdog_irq = ret; ret = wcnss_request_irq(wcnss, pdev, "fatal", false, wcnss_fatal_interrupt); if (ret < 0) - goto free_rproc; + goto detach_pds; wcnss->fatal_irq = ret; ret = wcnss_request_irq(wcnss, pdev, "ready", true, wcnss_ready_interrupt); if (ret < 0) - goto free_rproc; + goto detach_pds; wcnss->ready_irq = ret; ret = wcnss_request_irq(wcnss, pdev, "handover", true, wcnss_handover_interrupt); if (ret < 0) - goto free_rproc; + goto detach_pds; wcnss->handover_irq = ret; ret = wcnss_request_irq(wcnss, pdev, "stop-ack", true, wcnss_stop_ack_interrupt); if (ret < 0) - goto free_rproc; + goto detach_pds; wcnss->stop_ack_irq = ret; if (wcnss->stop_ack_irq) { @@ -548,7 +622,7 @@ static int wcnss_probe(struct platform_device *pdev) &wcnss->stop_bit); if (IS_ERR(wcnss->state)) { ret = PTR_ERR(wcnss->state); - goto free_rproc; + goto detach_pds; } } @@ -556,15 +630,17 @@ static int wcnss_probe(struct platform_device *pdev) wcnss->sysmon = qcom_add_sysmon_subdev(rproc, "wcnss", WCNSS_SSCTL_ID); if (IS_ERR(wcnss->sysmon)) { ret = PTR_ERR(wcnss->sysmon); - goto free_rproc; + goto detach_pds; } ret = rproc_add(rproc); if (ret) - goto free_rproc; + goto detach_pds; return of_platform_populate(pdev->dev.of_node, NULL, NULL, &pdev->dev); +detach_pds: + wcnss_release_pds(wcnss); free_rproc: rproc_free(rproc); @@ -582,6 +658,7 @@ static int wcnss_remove(struct platform_device *pdev) qcom_remove_sysmon_subdev(wcnss->sysmon); qcom_remove_smd_subdev(wcnss->rproc, &wcnss->smd_subdev); + wcnss_release_pds(wcnss); rproc_free(wcnss->rproc); return 0; diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c index dab2c0f5caf0..2394eef383e3 100644 --- a/drivers/remoteproc/remoteproc_core.c +++ b/drivers/remoteproc/remoteproc_core.c @@ -1704,7 +1704,7 @@ int rproc_trigger_recovery(struct rproc *rproc) goto unlock_mutex; /* generate coredump */ - rproc_coredump(rproc); + rproc->ops->coredump(rproc); /* load firmware */ ret = request_firmware(&firmware_p, rproc->firmware, dev); @@ -1934,6 +1934,69 @@ struct rproc *rproc_get_by_phandle(phandle phandle) #endif EXPORT_SYMBOL(rproc_get_by_phandle); +/** + * rproc_set_firmware() - assign a new firmware + * @rproc: rproc handle to which the new firmware is being assigned + * @fw_name: new firmware name to be assigned + * + * This function allows remoteproc drivers or clients to configure a custom + * firmware name that is different from the default name used during remoteproc + * registration. The function does not trigger a remote processor boot, + * only sets the firmware name used for a subsequent boot. This function + * should also be called only when the remote processor is offline. + * + * This allows either the userspace to configure a different name through + * sysfs or a kernel-level remoteproc or a remoteproc client driver to set + * a specific firmware when it is controlling the boot and shutdown of the + * remote processor. + * + * Return: 0 on success or a negative value upon failure + */ +int rproc_set_firmware(struct rproc *rproc, const char *fw_name) +{ + struct device *dev; + int ret, len; + char *p; + + if (!rproc || !fw_name) + return -EINVAL; + + dev = rproc->dev.parent; + + ret = mutex_lock_interruptible(&rproc->lock); + if (ret) { + dev_err(dev, "can't lock rproc %s: %d\n", rproc->name, ret); + return -EINVAL; + } + + if (rproc->state != RPROC_OFFLINE) { + dev_err(dev, "can't change firmware while running\n"); + ret = -EBUSY; + goto out; + } + + len = strcspn(fw_name, "\n"); + if (!len) { + dev_err(dev, "can't provide empty string for firmware name\n"); + ret = -EINVAL; + goto out; + } + + p = kstrndup(fw_name, len, GFP_KERNEL); + if (!p) { + ret = -ENOMEM; + goto out; + } + + kfree(rproc->firmware); + rproc->firmware = p; + +out: + mutex_unlock(&rproc->lock); + return ret; +} +EXPORT_SYMBOL(rproc_set_firmware); + static int rproc_validate(struct rproc *rproc) { switch (rproc->state) { @@ -2126,6 +2189,10 @@ static int rproc_alloc_ops(struct rproc *rproc, const struct rproc_ops *ops) if (!rproc->ops) return -ENOMEM; + /* Default to rproc_coredump if no coredump function is specified */ + if (!rproc->ops->coredump) + rproc->ops->coredump = rproc_coredump; + if (rproc->ops->load) return 0; diff --git a/drivers/remoteproc/remoteproc_coredump.c b/drivers/remoteproc/remoteproc_coredump.c index 34530dc20cb4..81ec154a6a5e 100644 --- a/drivers/remoteproc/remoteproc_coredump.c +++ b/drivers/remoteproc/remoteproc_coredump.c @@ -323,3 +323,143 @@ void rproc_coredump(struct rproc *rproc) */ wait_for_completion(&dump_state.dump_done); } + +/** + * rproc_coredump_using_sections() - perform coredump using section headers + * @rproc: rproc handle + * + * This function will generate an ELF header for the registered sections of + * segments and create a devcoredump device associated with rproc. Based on + * the coredump configuration this function will directly copy the segments + * from device memory to userspace or copy segments from device memory to + * a separate buffer, which can then be read by userspace. + * The first approach avoids using extra vmalloc memory. But it will stall + * recovery flow until dump is read by userspace. + */ +void rproc_coredump_using_sections(struct rproc *rproc) +{ + struct rproc_dump_segment *segment; + void *shdr; + void *ehdr; + size_t data_size; + size_t strtbl_size = 0; + size_t strtbl_index = 1; + size_t offset; + void *data; + u8 class = rproc->elf_class; + int shnum; + struct rproc_coredump_state dump_state; + unsigned int dump_conf = rproc->dump_conf; + char *str_tbl = "STR_TBL"; + + if (list_empty(&rproc->dump_segments) || + dump_conf == RPROC_COREDUMP_DISABLED) + return; + + if (class == ELFCLASSNONE) { + dev_err(&rproc->dev, "Elf class is not set\n"); + return; + } + + /* + * We allocate two extra section headers. The first one is null. + * Second section header is for the string table. Also space is + * allocated for string table. + */ + data_size = elf_size_of_hdr(class) + 2 * elf_size_of_shdr(class); + shnum = 2; + + /* the extra byte is for the null character at index 0 */ + strtbl_size += strlen(str_tbl) + 2; + + list_for_each_entry(segment, &rproc->dump_segments, node) { + data_size += elf_size_of_shdr(class); + strtbl_size += strlen(segment->priv) + 1; + if (dump_conf == RPROC_COREDUMP_ENABLED) + data_size += segment->size; + shnum++; + } + + data_size += strtbl_size; + + data = vmalloc(data_size); + if (!data) + return; + + ehdr = data; + memset(ehdr, 0, elf_size_of_hdr(class)); + /* e_ident field is common for both elf32 and elf64 */ + elf_hdr_init_ident(ehdr, class); + + elf_hdr_set_e_type(class, ehdr, ET_CORE); + elf_hdr_set_e_machine(class, ehdr, rproc->elf_machine); + elf_hdr_set_e_version(class, ehdr, EV_CURRENT); + elf_hdr_set_e_entry(class, ehdr, rproc->bootaddr); + elf_hdr_set_e_shoff(class, ehdr, elf_size_of_hdr(class)); + elf_hdr_set_e_ehsize(class, ehdr, elf_size_of_hdr(class)); + elf_hdr_set_e_shentsize(class, ehdr, elf_size_of_shdr(class)); + elf_hdr_set_e_shnum(class, ehdr, shnum); + elf_hdr_set_e_shstrndx(class, ehdr, 1); + + /* + * The zeroth index of the section header is reserved and is rarely used. + * Set the section header as null (SHN_UNDEF) and move to the next one. + */ + shdr = data + elf_hdr_get_e_shoff(class, ehdr); + memset(shdr, 0, elf_size_of_shdr(class)); + shdr += elf_size_of_shdr(class); + + /* Initialize the string table. */ + offset = elf_hdr_get_e_shoff(class, ehdr) + + elf_size_of_shdr(class) * elf_hdr_get_e_shnum(class, ehdr); + memset(data + offset, 0, strtbl_size); + + /* Fill in the string table section header. */ + memset(shdr, 0, elf_size_of_shdr(class)); + elf_shdr_set_sh_type(class, shdr, SHT_STRTAB); + elf_shdr_set_sh_offset(class, shdr, offset); + elf_shdr_set_sh_size(class, shdr, strtbl_size); + elf_shdr_set_sh_entsize(class, shdr, 0); + elf_shdr_set_sh_flags(class, shdr, 0); + elf_shdr_set_sh_name(class, shdr, elf_strtbl_add(str_tbl, ehdr, class, &strtbl_index)); + offset += elf_shdr_get_sh_size(class, shdr); + shdr += elf_size_of_shdr(class); + + list_for_each_entry(segment, &rproc->dump_segments, node) { + memset(shdr, 0, elf_size_of_shdr(class)); + elf_shdr_set_sh_type(class, shdr, SHT_PROGBITS); + elf_shdr_set_sh_offset(class, shdr, offset); + elf_shdr_set_sh_addr(class, shdr, segment->da); + elf_shdr_set_sh_size(class, shdr, segment->size); + elf_shdr_set_sh_entsize(class, shdr, 0); + elf_shdr_set_sh_flags(class, shdr, SHF_WRITE); + elf_shdr_set_sh_name(class, shdr, + elf_strtbl_add(segment->priv, ehdr, class, &strtbl_index)); + + /* No need to copy segments for inline dumps */ + if (dump_conf == RPROC_COREDUMP_ENABLED) + rproc_copy_segment(rproc, data + offset, segment, 0, + segment->size); + offset += elf_shdr_get_sh_size(class, shdr); + shdr += elf_size_of_shdr(class); + } + + if (dump_conf == RPROC_COREDUMP_ENABLED) { + dev_coredumpv(&rproc->dev, data, data_size, GFP_KERNEL); + return; + } + + /* Initialize the dump state struct to be used by rproc_coredump_read */ + dump_state.rproc = rproc; + dump_state.header = data; + init_completion(&dump_state.dump_done); + + dev_coredumpm(&rproc->dev, NULL, &dump_state, data_size, GFP_KERNEL, + rproc_coredump_read, rproc_coredump_free); + + /* Wait until the dump is read and free is called. Data is freed + * by devcoredump framework automatically after 5 minutes. + */ + wait_for_completion(&dump_state.dump_done); +} +EXPORT_SYMBOL(rproc_coredump_using_sections); diff --git a/drivers/remoteproc/remoteproc_elf_helpers.h b/drivers/remoteproc/remoteproc_elf_helpers.h index 4b6be7b6bf4d..26404e68e17a 100644 --- a/drivers/remoteproc/remoteproc_elf_helpers.h +++ b/drivers/remoteproc/remoteproc_elf_helpers.h @@ -65,6 +65,7 @@ ELF_GEN_FIELD_GET_SET(hdr, e_type, u16) ELF_GEN_FIELD_GET_SET(hdr, e_version, u32) ELF_GEN_FIELD_GET_SET(hdr, e_ehsize, u32) ELF_GEN_FIELD_GET_SET(hdr, e_phentsize, u16) +ELF_GEN_FIELD_GET_SET(hdr, e_shentsize, u16) ELF_GEN_FIELD_GET_SET(phdr, p_paddr, u64) ELF_GEN_FIELD_GET_SET(phdr, p_vaddr, u64) @@ -75,6 +76,9 @@ ELF_GEN_FIELD_GET_SET(phdr, p_offset, u64) ELF_GEN_FIELD_GET_SET(phdr, p_flags, u32) ELF_GEN_FIELD_GET_SET(phdr, p_align, u64) +ELF_GEN_FIELD_GET_SET(shdr, sh_type, u32) +ELF_GEN_FIELD_GET_SET(shdr, sh_flags, u32) +ELF_GEN_FIELD_GET_SET(shdr, sh_entsize, u16) ELF_GEN_FIELD_GET_SET(shdr, sh_size, u64) ELF_GEN_FIELD_GET_SET(shdr, sh_offset, u64) ELF_GEN_FIELD_GET_SET(shdr, sh_name, u32) @@ -93,4 +97,26 @@ ELF_STRUCT_SIZE(shdr) ELF_STRUCT_SIZE(phdr) ELF_STRUCT_SIZE(hdr) +static inline unsigned int elf_strtbl_add(const char *name, void *ehdr, u8 class, size_t *index) +{ + u16 shstrndx = elf_hdr_get_e_shstrndx(class, ehdr); + void *shdr; + char *strtab; + size_t idx, ret; + + shdr = ehdr + elf_size_of_hdr(class) + shstrndx * elf_size_of_shdr(class); + strtab = ehdr + elf_shdr_get_sh_offset(class, shdr); + idx = index ? *index : 0; + if (!strtab || !name) + return 0; + + ret = idx; + strcpy((strtab + idx), name); + idx += strlen(name) + 1; + if (index) + *index = idx; + + return ret; +} + #endif /* REMOTEPROC_ELF_LOADER_H */ diff --git a/drivers/remoteproc/remoteproc_sysfs.c b/drivers/remoteproc/remoteproc_sysfs.c index d1cf7bf277c4..1dbef895e65e 100644 --- a/drivers/remoteproc/remoteproc_sysfs.c +++ b/drivers/remoteproc/remoteproc_sysfs.c @@ -154,38 +154,9 @@ static ssize_t firmware_store(struct device *dev, const char *buf, size_t count) { struct rproc *rproc = to_rproc(dev); - char *p; - int err, len = count; + int err; - err = mutex_lock_interruptible(&rproc->lock); - if (err) { - dev_err(dev, "can't lock rproc %s: %d\n", rproc->name, err); - return -EINVAL; - } - - if (rproc->state != RPROC_OFFLINE) { - dev_err(dev, "can't change firmware while running\n"); - err = -EBUSY; - goto out; - } - - len = strcspn(buf, "\n"); - if (!len) { - dev_err(dev, "can't provide a NULL firmware\n"); - err = -EINVAL; - goto out; - } - - p = kstrndup(buf, len, GFP_KERNEL); - if (!p) { - err = -ENOMEM; - goto out; - } - - kfree(rproc->firmware); - rproc->firmware = p; -out: - mutex_unlock(&rproc->lock); + err = rproc_set_firmware(rproc, buf); return err ? err : count; } diff --git a/drivers/remoteproc/stm32_rproc.c b/drivers/remoteproc/stm32_rproc.c index d2414cc1d90d..a180aeae9675 100644 --- a/drivers/remoteproc/stm32_rproc.c +++ b/drivers/remoteproc/stm32_rproc.c @@ -541,7 +541,7 @@ static void stm32_rproc_kick(struct rproc *rproc, int vqid) } } -static struct rproc_ops st_rproc_ops = { +static const struct rproc_ops st_rproc_ops = { .start = stm32_rproc_start, .stop = stm32_rproc_stop, .attach = stm32_rproc_attach, diff --git a/drivers/remoteproc/ti_k3_dsp_remoteproc.c b/drivers/remoteproc/ti_k3_dsp_remoteproc.c index 9011e477290c..863c0214e0a8 100644 --- a/drivers/remoteproc/ti_k3_dsp_remoteproc.c +++ b/drivers/remoteproc/ti_k3_dsp_remoteproc.c @@ -445,10 +445,10 @@ static int k3_dsp_rproc_of_get_memories(struct platform_device *pdev, kproc->mem[i].cpu_addr = devm_ioremap_wc(dev, res->start, resource_size(res)); - if (IS_ERR(kproc->mem[i].cpu_addr)) { + if (!kproc->mem[i].cpu_addr) { dev_err(dev, "failed to map %s memory\n", data->mems[i].name); - return PTR_ERR(kproc->mem[i].cpu_addr); + return -ENOMEM; } kproc->mem[i].bus_addr = res->start; kproc->mem[i].dev_addr = data->mems[i].dev_addr; diff --git a/drivers/remoteproc/ti_k3_r5_remoteproc.c b/drivers/remoteproc/ti_k3_r5_remoteproc.c index d9307935441d..62b5a4c29456 100644 --- a/drivers/remoteproc/ti_k3_r5_remoteproc.c +++ b/drivers/remoteproc/ti_k3_r5_remoteproc.c @@ -38,6 +38,8 @@ #define PROC_BOOT_CFG_FLAG_R5_TCM_RSTBASE 0x00000800 #define PROC_BOOT_CFG_FLAG_R5_BTCM_EN 0x00001000 #define PROC_BOOT_CFG_FLAG_R5_ATCM_EN 0x00002000 +/* Available from J7200 SoCs onwards */ +#define PROC_BOOT_CFG_FLAG_R5_MEM_INIT_DIS 0x00004000 /* R5 TI-SCI Processor Control Flags */ #define PROC_BOOT_CTRL_FLAG_R5_CORE_HALT 0x00000001 @@ -68,15 +70,27 @@ enum cluster_mode { }; /** + * struct k3_r5_soc_data - match data to handle SoC variations + * @tcm_is_double: flag to denote the larger unified TCMs in certain modes + * @tcm_ecc_autoinit: flag to denote the auto-initialization of TCMs for ECC + */ +struct k3_r5_soc_data { + bool tcm_is_double; + bool tcm_ecc_autoinit; +}; + +/** * struct k3_r5_cluster - K3 R5F Cluster structure * @dev: cached device pointer * @mode: Mode to configure the Cluster - Split or LockStep * @cores: list of R5 cores within the cluster + * @soc_data: SoC-specific feature data for a R5FSS */ struct k3_r5_cluster { struct device *dev; enum cluster_mode mode; struct list_head cores; + const struct k3_r5_soc_data *soc_data; }; /** @@ -362,8 +376,16 @@ static int k3_r5_rproc_prepare(struct rproc *rproc) struct k3_r5_cluster *cluster = kproc->cluster; struct k3_r5_core *core = kproc->core; struct device *dev = kproc->dev; + u32 ctrl = 0, cfg = 0, stat = 0; + u64 boot_vec = 0; + bool mem_init_dis; int ret; + ret = ti_sci_proc_get_status(core->tsp, &boot_vec, &cfg, &ctrl, &stat); + if (ret < 0) + return ret; + mem_init_dis = !!(cfg & PROC_BOOT_CFG_FLAG_R5_MEM_INIT_DIS); + ret = (cluster->mode == CLUSTER_MODE_LOCKSTEP) ? k3_r5_lockstep_release(cluster) : k3_r5_split_release(core); if (ret) { @@ -373,6 +395,17 @@ static int k3_r5_rproc_prepare(struct rproc *rproc) } /* + * Newer IP revisions like on J7200 SoCs support h/w auto-initialization + * of TCMs, so there is no need to perform the s/w memzero. This bit is + * configurable through System Firmware, the default value does perform + * auto-init, but account for it in case it is disabled + */ + if (cluster->soc_data->tcm_ecc_autoinit && !mem_init_dis) { + dev_dbg(dev, "leveraging h/w init for TCM memories\n"); + return 0; + } + + /* * Zero out both TCMs unconditionally (access from v8 Arm core is not * affected by ATCM & BTCM enable configuration values) so that ECC * can be effective on all TCM addresses. @@ -855,6 +888,43 @@ static void k3_r5_reserved_mem_exit(struct k3_r5_rproc *kproc) of_reserved_mem_device_release(kproc->dev); } +/* + * Each R5F core within a typical R5FSS instance has a total of 64 KB of TCMs, + * split equally into two 32 KB banks between ATCM and BTCM. The TCMs from both + * cores are usable in Split-mode, but only the Core0 TCMs can be used in + * LockStep-mode. The newer revisions of the R5FSS IP maximizes these TCMs by + * leveraging the Core1 TCMs as well in certain modes where they would have + * otherwise been unusable (Eg: LockStep-mode on J7200 SoCs). This is done by + * making a Core1 TCM visible immediately after the corresponding Core0 TCM. + * The SoC memory map uses the larger 64 KB sizes for the Core0 TCMs, and the + * dts representation reflects this increased size on supported SoCs. The Core0 + * TCM sizes therefore have to be adjusted to only half the original size in + * Split mode. + */ +static void k3_r5_adjust_tcm_sizes(struct k3_r5_rproc *kproc) +{ + struct k3_r5_cluster *cluster = kproc->cluster; + struct k3_r5_core *core = kproc->core; + struct device *cdev = core->dev; + struct k3_r5_core *core0; + + if (cluster->mode == CLUSTER_MODE_LOCKSTEP || + !cluster->soc_data->tcm_is_double) + return; + + core0 = list_first_entry(&cluster->cores, struct k3_r5_core, elem); + if (core == core0) { + WARN_ON(core->mem[0].size != SZ_64K); + WARN_ON(core->mem[1].size != SZ_64K); + + core->mem[0].size /= 2; + core->mem[1].size /= 2; + + dev_dbg(cdev, "adjusted TCM sizes, ATCM = 0x%zx BTCM = 0x%zx\n", + core->mem[0].size, core->mem[1].size); + } +} + static int k3_r5_cluster_rproc_init(struct platform_device *pdev) { struct k3_r5_cluster *cluster = platform_get_drvdata(pdev); @@ -902,6 +972,8 @@ static int k3_r5_cluster_rproc_init(struct platform_device *pdev) goto err_config; } + k3_r5_adjust_tcm_sizes(kproc); + ret = k3_r5_reserved_mem_init(kproc); if (ret) { dev_err(dev, "reserved memory init failed, ret = %d\n", @@ -940,9 +1012,9 @@ out: return ret; } -static int k3_r5_cluster_rproc_exit(struct platform_device *pdev) +static void k3_r5_cluster_rproc_exit(void *data) { - struct k3_r5_cluster *cluster = platform_get_drvdata(pdev); + struct k3_r5_cluster *cluster = platform_get_drvdata(data); struct k3_r5_rproc *kproc; struct k3_r5_core *core; struct rproc *rproc; @@ -967,8 +1039,6 @@ static int k3_r5_cluster_rproc_exit(struct platform_device *pdev) rproc_free(rproc); core->rproc = NULL; } - - return 0; } static int k3_r5_core_of_get_internal_memories(struct platform_device *pdev, @@ -1255,9 +1325,9 @@ static void k3_r5_core_of_exit(struct platform_device *pdev) devres_release_group(dev, k3_r5_core_of_init); } -static void k3_r5_cluster_of_exit(struct platform_device *pdev) +static void k3_r5_cluster_of_exit(void *data) { - struct k3_r5_cluster *cluster = platform_get_drvdata(pdev); + struct k3_r5_cluster *cluster = platform_get_drvdata(data); struct platform_device *cpdev; struct k3_r5_core *core, *temp; @@ -1311,15 +1381,23 @@ static int k3_r5_probe(struct platform_device *pdev) struct device *dev = &pdev->dev; struct device_node *np = dev_of_node(dev); struct k3_r5_cluster *cluster; + const struct k3_r5_soc_data *data; int ret; int num_cores; + data = of_device_get_match_data(&pdev->dev); + if (!data) { + dev_err(dev, "SoC-specific data is not defined\n"); + return -ENODEV; + } + cluster = devm_kzalloc(dev, sizeof(*cluster), GFP_KERNEL); if (!cluster) return -ENOMEM; cluster->dev = dev; cluster->mode = CLUSTER_MODE_LOCKSTEP; + cluster->soc_data = data; INIT_LIST_HEAD(&cluster->cores); ret = of_property_read_u32(np, "ti,cluster-mode", &cluster->mode); @@ -1351,9 +1429,7 @@ static int k3_r5_probe(struct platform_device *pdev) return ret; } - ret = devm_add_action_or_reset(dev, - (void(*)(void *))k3_r5_cluster_of_exit, - pdev); + ret = devm_add_action_or_reset(dev, k3_r5_cluster_of_exit, pdev); if (ret) return ret; @@ -1364,18 +1440,27 @@ static int k3_r5_probe(struct platform_device *pdev) return ret; } - ret = devm_add_action_or_reset(dev, - (void(*)(void *))k3_r5_cluster_rproc_exit, - pdev); + ret = devm_add_action_or_reset(dev, k3_r5_cluster_rproc_exit, pdev); if (ret) return ret; return 0; } +static const struct k3_r5_soc_data am65_j721e_soc_data = { + .tcm_is_double = false, + .tcm_ecc_autoinit = false, +}; + +static const struct k3_r5_soc_data j7200_soc_data = { + .tcm_is_double = true, + .tcm_ecc_autoinit = true, +}; + static const struct of_device_id k3_r5_of_match[] = { - { .compatible = "ti,am654-r5fss", }, - { .compatible = "ti,j721e-r5fss", }, + { .compatible = "ti,am654-r5fss", .data = &am65_j721e_soc_data, }, + { .compatible = "ti,j721e-r5fss", .data = &am65_j721e_soc_data, }, + { .compatible = "ti,j7200-r5fss", .data = &j7200_soc_data, }, { /* sentinel */ }, }; MODULE_DEVICE_TABLE(of, k3_r5_of_match); diff --git a/drivers/remoteproc/wkup_m3_rproc.c b/drivers/remoteproc/wkup_m3_rproc.c index b9349d684258..92d387dfc03b 100644 --- a/drivers/remoteproc/wkup_m3_rproc.c +++ b/drivers/remoteproc/wkup_m3_rproc.c @@ -17,6 +17,7 @@ #include <linux/platform_device.h> #include <linux/pm_runtime.h> #include <linux/remoteproc.h> +#include <linux/reset.h> #include <linux/platform_data/wkup_m3.h> @@ -43,11 +44,13 @@ struct wkup_m3_mem { * @rproc: rproc handle * @pdev: pointer to platform device * @mem: WkupM3 memory information + * @rsts: reset control */ struct wkup_m3_rproc { struct rproc *rproc; struct platform_device *pdev; struct wkup_m3_mem mem[WKUPM3_MEM_MAX]; + struct reset_control *rsts; }; static int wkup_m3_rproc_start(struct rproc *rproc) @@ -56,13 +59,16 @@ static int wkup_m3_rproc_start(struct rproc *rproc) struct platform_device *pdev = wkupm3->pdev; struct device *dev = &pdev->dev; struct wkup_m3_platform_data *pdata = dev_get_platdata(dev); + int error = 0; - if (pdata->deassert_reset(pdev, pdata->reset_name)) { + error = reset_control_deassert(wkupm3->rsts); + + if (!wkupm3->rsts && pdata->deassert_reset(pdev, pdata->reset_name)) { dev_err(dev, "Unable to reset wkup_m3!\n"); - return -ENODEV; + error = -ENODEV; } - return 0; + return error; } static int wkup_m3_rproc_stop(struct rproc *rproc) @@ -71,13 +77,16 @@ static int wkup_m3_rproc_stop(struct rproc *rproc) struct platform_device *pdev = wkupm3->pdev; struct device *dev = &pdev->dev; struct wkup_m3_platform_data *pdata = dev_get_platdata(dev); + int error = 0; - if (pdata->assert_reset(pdev, pdata->reset_name)) { + error = reset_control_assert(wkupm3->rsts); + + if (!wkupm3->rsts && pdata->assert_reset(pdev, pdata->reset_name)) { dev_err(dev, "Unable to assert reset of wkup_m3!\n"); - return -ENODEV; + error = -ENODEV; } - return 0; + return error; } static void *wkup_m3_rproc_da_to_va(struct rproc *rproc, u64 da, size_t len) @@ -132,12 +141,6 @@ static int wkup_m3_rproc_probe(struct platform_device *pdev) int ret; int i; - if (!(pdata && pdata->deassert_reset && pdata->assert_reset && - pdata->reset_name)) { - dev_err(dev, "Platform data missing!\n"); - return -ENODEV; - } - ret = of_property_read_string(dev->of_node, "ti,pm-firmware", &fw_name); if (ret) { @@ -165,6 +168,18 @@ static int wkup_m3_rproc_probe(struct platform_device *pdev) wkupm3->rproc = rproc; wkupm3->pdev = pdev; + wkupm3->rsts = devm_reset_control_get_optional_shared(dev, "rstctrl"); + if (IS_ERR(wkupm3->rsts)) + return PTR_ERR(wkupm3->rsts); + if (!wkupm3->rsts) { + if (!(pdata && pdata->deassert_reset && pdata->assert_reset && + pdata->reset_name)) { + dev_err(dev, "Platform data missing!\n"); + ret = -ENODEV; + goto err_put_rproc; + } + } + for (i = 0; i < ARRAY_SIZE(mem_names); i++) { res = platform_get_resource_byname(pdev, IORESOURCE_MEM, mem_names[i]); @@ -173,7 +188,7 @@ static int wkup_m3_rproc_probe(struct platform_device *pdev) dev_err(&pdev->dev, "devm_ioremap_resource failed for resource %d\n", i); ret = PTR_ERR(wkupm3->mem[i].cpu_addr); - goto err; + goto err_put_rproc; } wkupm3->mem[i].bus_addr = res->start; wkupm3->mem[i].size = resource_size(res); |