--- /dev/null
+/*
+ * Qualcomm Peripheral Image Loader
+ *
+ * Copyright (C) 2016 Linaro Ltd.
+ * Copyright (C) 2014 Sony Mobile Communications AB
+ * Copyright (c) 2012-2013, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/dma-mapping.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/mfd/syscon.h>
+#include <linux/module.h>
+#include <linux/of_address.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
+#include <linux/remoteproc.h>
+#include <linux/reset.h>
+#include <linux/soc/qcom/smem.h>
+#include <linux/soc/qcom/smem_state.h>
+
+#include "remoteproc_internal.h"
+#include "qcom_mdt_loader.h"
+
+#include <linux/qcom_scm.h>
+
+#define MBA_FIRMWARE_NAME "mba.b00"
+#define MPSS_FIRMWARE_NAME "modem.mdt"
+
+#define MPSS_CRASH_REASON_SMEM 421
+
+/* RMB Status Register Values */
+#define RMB_PBL_SUCCESS 0x1
+
+#define RMB_MBA_XPU_UNLOCKED 0x1
+#define RMB_MBA_XPU_UNLOCKED_SCRIBBLED 0x2
+#define RMB_MBA_META_DATA_AUTH_SUCCESS 0x3
+#define RMB_MBA_AUTH_COMPLETE 0x4
+
+/* PBL/MBA interface registers */
+#define RMB_MBA_IMAGE_REG 0x00
+#define RMB_PBL_STATUS_REG 0x04
+#define RMB_MBA_COMMAND_REG 0x08
+#define RMB_MBA_STATUS_REG 0x0C
+#define RMB_PMI_META_DATA_REG 0x10
+#define RMB_PMI_CODE_START_REG 0x14
+#define RMB_PMI_CODE_LENGTH_REG 0x18
+
+#define RMB_CMD_META_DATA_READY 0x1
+#define RMB_CMD_LOAD_READY 0x2
+
+/* QDSP6SS Register Offsets */
+#define QDSP6SS_RESET_REG 0x014
+#define QDSP6SS_GFMUX_CTL_REG 0x020
+#define QDSP6SS_PWR_CTL_REG 0x030
+
+/* AXI Halt Register Offsets */
+#define AXI_HALTREQ_REG 0x0
+#define AXI_HALTACK_REG 0x4
+#define AXI_IDLE_REG 0x8
+
+#define HALT_ACK_TIMEOUT_MS 100
+
+/* QDSP6SS_RESET */
+#define Q6SS_STOP_CORE BIT(0)
+#define Q6SS_CORE_ARES BIT(1)
+#define Q6SS_BUS_ARES_ENABLE BIT(2)
+
+/* QDSP6SS_GFMUX_CTL */
+#define Q6SS_CLK_ENABLE BIT(1)
+
+/* QDSP6SS_PWR_CTL */
+#define Q6SS_L2DATA_SLP_NRET_N_0 BIT(0)
+#define Q6SS_L2DATA_SLP_NRET_N_1 BIT(1)
+#define Q6SS_L2DATA_SLP_NRET_N_2 BIT(2)
+#define Q6SS_L2TAG_SLP_NRET_N BIT(16)
+#define Q6SS_ETB_SLP_NRET_N BIT(17)
+#define Q6SS_L2DATA_STBY_N BIT(18)
+#define Q6SS_SLP_RET_N BIT(19)
+#define Q6SS_CLAMP_IO BIT(20)
+#define QDSS_BHS_ON BIT(21)
+#define QDSS_LDO_BYP BIT(22)
+
+struct q6v5 {
+ struct device *dev;
+ struct rproc *rproc;
+
+ void __iomem *reg_base;
+ void __iomem *rmb_base;
+
+ struct regmap *halt_map;
+ u32 halt_q6;
+ u32 halt_modem;
+ u32 halt_nc;
+
+ struct reset_control *mss_restart;
+
+ struct qcom_smem_state *state;
+ unsigned stop_bit;
+
+ struct regulator_bulk_data supply[4];
+
+ struct clk *ahb_clk;
+ struct clk *axi_clk;
+ struct clk *rom_clk;
+
+ struct completion start_done;
+ struct completion stop_done;
+ bool running;
+
+ phys_addr_t mba_phys;
+ void *mba_region;
+ size_t mba_size;
+
+ phys_addr_t mpss_phys;
+ phys_addr_t mpss_reloc;
+ void *mpss_region;
+ size_t mpss_size;
+};
+
+enum {
+ Q6V5_SUPPLY_CX,
+ Q6V5_SUPPLY_MX,
+ Q6V5_SUPPLY_MSS,
+ Q6V5_SUPPLY_PLL,
+};
+
+static int q6v5_regulator_init(struct q6v5 *qproc)
+{
+ int ret;
+
+ qproc->supply[Q6V5_SUPPLY_CX].supply = "cx";
+ qproc->supply[Q6V5_SUPPLY_MX].supply = "mx";
+ qproc->supply[Q6V5_SUPPLY_MSS].supply = "mss";
+ qproc->supply[Q6V5_SUPPLY_PLL].supply = "pll";
+
+ ret = devm_regulator_bulk_get(qproc->dev,
+ ARRAY_SIZE(qproc->supply), qproc->supply);
+ if (ret < 0) {
+ dev_err(qproc->dev, "failed to get supplies\n");
+ return ret;
+ }
+
+ regulator_set_load(qproc->supply[Q6V5_SUPPLY_CX].consumer, 100000);
+ regulator_set_load(qproc->supply[Q6V5_SUPPLY_MSS].consumer, 100000);
+ regulator_set_load(qproc->supply[Q6V5_SUPPLY_PLL].consumer, 10000);
+
+ return 0;
+}
+
+static int q6v5_regulator_enable(struct q6v5 *qproc)
+{
+ struct regulator *mss = qproc->supply[Q6V5_SUPPLY_MSS].consumer;
+ struct regulator *mx = qproc->supply[Q6V5_SUPPLY_MX].consumer;
+ int ret;
+
+ /* TODO: Q6V5_SUPPLY_CX is supposed to be set to super-turbo here */
+
+ ret = regulator_set_voltage(mx, 1050000, INT_MAX);
+ if (ret)
+ return ret;
+
+ regulator_set_voltage(mss, 1000000, 1150000);
+
+ return regulator_bulk_enable(ARRAY_SIZE(qproc->supply), qproc->supply);
+}
+
+static void q6v5_regulator_disable(struct q6v5 *qproc)
+{
+ struct regulator *mss = qproc->supply[Q6V5_SUPPLY_MSS].consumer;
+ struct regulator *mx = qproc->supply[Q6V5_SUPPLY_MX].consumer;
+
+ /* TODO: Q6V5_SUPPLY_CX corner votes should be released */
+
+ regulator_bulk_disable(ARRAY_SIZE(qproc->supply), qproc->supply);
+ regulator_set_voltage(mx, 0, INT_MAX);
+ regulator_set_voltage(mss, 0, 1150000);
+}
+
+static int q6v5_load(struct rproc *rproc, const struct firmware *fw)
+{
+ struct q6v5 *qproc = rproc->priv;
+
+ memcpy(qproc->mba_region, fw->data, fw->size);
+
+ return 0;
+}
+
+static const struct rproc_fw_ops q6v5_fw_ops = {
+ .find_rsc_table = qcom_mdt_find_rsc_table,
+ .load = q6v5_load,
+};
+
+static int q6v5_rmb_pbl_wait(struct q6v5 *qproc, int ms)
+{
+ unsigned long timeout;
+ s32 val;
+
+ timeout = jiffies + msecs_to_jiffies(ms);
+ for (;;) {
+ val = readl(qproc->rmb_base + RMB_PBL_STATUS_REG);
+ if (val)
+ break;
+
+ if (time_after(jiffies, timeout))
+ return -ETIMEDOUT;
+
+ msleep(1);
+ }
+
+ return val;
+}
+
+static int q6v5_rmb_mba_wait(struct q6v5 *qproc, u32 status, int ms)
+{
+
+ unsigned long timeout;
+ s32 val;
+
+ timeout = jiffies + msecs_to_jiffies(ms);
+ for (;;) {
+ val = readl(qproc->rmb_base + RMB_MBA_STATUS_REG);
+ if (val < 0)
+ break;
+
+ if (!status && val)
+ break;
+ else if (status && val == status)
+ break;
+
+ if (time_after(jiffies, timeout))
+ return -ETIMEDOUT;
+
+ msleep(1);
+ }
+
+ return val;
+}
+
+static int q6v5proc_reset(struct q6v5 *qproc)
+{
+ u32 val;
+ int ret;
+
+ /* Assert resets, stop core */
+ val = readl(qproc->reg_base + QDSP6SS_RESET_REG);
+ val |= (Q6SS_CORE_ARES | Q6SS_BUS_ARES_ENABLE | Q6SS_STOP_CORE);
+ writel(val, qproc->reg_base + QDSP6SS_RESET_REG);
+
+ /* Enable power block headswitch, and wait for it to stabilize */
+ val = readl(qproc->reg_base + QDSP6SS_PWR_CTL_REG);
+ val |= QDSS_BHS_ON | QDSS_LDO_BYP;
+ writel(val, qproc->reg_base + QDSP6SS_PWR_CTL_REG);
+ udelay(1);
+
+ /*
+ * Turn on memories. L2 banks should be done individually
+ * to minimize inrush current.
+ */
+ val = readl(qproc->reg_base + QDSP6SS_PWR_CTL_REG);
+ val |= Q6SS_SLP_RET_N | Q6SS_L2TAG_SLP_NRET_N |
+ Q6SS_ETB_SLP_NRET_N | Q6SS_L2DATA_STBY_N;
+ writel(val, qproc->reg_base + QDSP6SS_PWR_CTL_REG);
+ val |= Q6SS_L2DATA_SLP_NRET_N_2;
+ writel(val, qproc->reg_base + QDSP6SS_PWR_CTL_REG);
+ val |= Q6SS_L2DATA_SLP_NRET_N_1;
+ writel(val, qproc->reg_base + QDSP6SS_PWR_CTL_REG);
+ val |= Q6SS_L2DATA_SLP_NRET_N_0;
+ writel(val, qproc->reg_base + QDSP6SS_PWR_CTL_REG);
+
+ /* Remove IO clamp */
+ val &= ~Q6SS_CLAMP_IO;
+ writel(val, qproc->reg_base + QDSP6SS_PWR_CTL_REG);
+
+ /* Bring core out of reset */
+ val = readl(qproc->reg_base + QDSP6SS_RESET_REG);
+ val &= ~Q6SS_CORE_ARES;
+ writel(val, qproc->reg_base + QDSP6SS_RESET_REG);
+
+ /* Turn on core clock */
+ val = readl(qproc->reg_base + QDSP6SS_GFMUX_CTL_REG);
+ val |= Q6SS_CLK_ENABLE;
+ writel(val, qproc->reg_base + QDSP6SS_GFMUX_CTL_REG);
+
+ /* Start core execution */
+ val = readl(qproc->reg_base + QDSP6SS_RESET_REG);
+ val &= ~Q6SS_STOP_CORE;
+ writel(val, qproc->reg_base + QDSP6SS_RESET_REG);
+
+ /* Wait for PBL status */
+ ret = q6v5_rmb_pbl_wait(qproc, 1000);
+ if (ret == -ETIMEDOUT) {
+ dev_err(qproc->dev, "PBL boot timed out\n");
+ } else if (ret != RMB_PBL_SUCCESS) {
+ dev_err(qproc->dev, "PBL returned unexpected status %d\n", ret);
+ ret = -EINVAL;
+ } else {
+ ret = 0;
+ }
+
+ return ret;
+}
+
+static void q6v5proc_halt_axi_port(struct q6v5 *qproc,
+ struct regmap *halt_map,
+ u32 offset)
+{
+ unsigned long timeout;
+ unsigned int val;
+ int ret;
+
+ /* Check if we're already idle */
+ ret = regmap_read(halt_map, offset + AXI_IDLE_REG, &val);
+ if (!ret && val)
+ return;
+
+ /* Assert halt request */
+ regmap_write(halt_map, offset + AXI_HALTREQ_REG, 1);
+
+ /* Wait for halt */
+ timeout = jiffies + msecs_to_jiffies(HALT_ACK_TIMEOUT_MS);
+ for (;;) {
+ ret = regmap_read(halt_map, offset + AXI_HALTACK_REG, &val);
+ if (ret || val || time_after(jiffies, timeout))
+ break;
+
+ msleep(1);
+ }
+
+ ret = regmap_read(halt_map, offset + AXI_IDLE_REG, &val);
+ if (ret || !val)
+ dev_err(qproc->dev, "port failed halt\n");
+
+ /* Clear halt request (port will remain halted until reset) */
+ regmap_write(halt_map, offset + AXI_HALTREQ_REG, 0);
+}
+
+static int q6v5_mpss_init_image(struct q6v5 *qproc, const struct firmware *fw)
+{
+ DEFINE_DMA_ATTRS(attrs);
+ dma_addr_t phys;
+ void *ptr;
+ int ret;
+
+ dma_set_attr(DMA_ATTR_FORCE_CONTIGUOUS, &attrs);
+ ptr = dma_alloc_attrs(qproc->dev, fw->size, &phys, GFP_KERNEL, &attrs);
+ if (!ptr) {
+ dev_err(qproc->dev, "failed to allocate mdt buffer\n");
+ return -ENOMEM;
+ }
+
+ memcpy(ptr, fw->data, fw->size);
+
+ writel(phys, qproc->rmb_base + RMB_PMI_META_DATA_REG);
+ writel(RMB_CMD_META_DATA_READY, qproc->rmb_base + RMB_MBA_COMMAND_REG);
+
+ ret = q6v5_rmb_mba_wait(qproc, RMB_MBA_META_DATA_AUTH_SUCCESS, 1000);
+ if (ret == -ETIMEDOUT)
+ dev_err(qproc->dev, "MPSS header authentication timed out\n");
+ else if (ret < 0)
+ dev_err(qproc->dev, "MPSS header authentication failed: %d\n", ret);
+
+ dma_free_attrs(qproc->dev, fw->size, ptr, phys, &attrs);
+
+ return ret < 0 ? ret : 0;
+}
+
+static int q6v5_mpss_validate(struct q6v5 *qproc, const struct firmware *fw)
+{
+ const struct elf32_phdr *phdrs;
+ const struct elf32_phdr *phdr;
+ struct elf32_hdr *ehdr;
+ phys_addr_t boot_addr;
+ phys_addr_t fw_addr;
+ bool relocate;
+ size_t size;
+ u32 val;
+ int ret;
+ int i;
+
+ ret = qcom_mdt_parse(fw, &fw_addr, NULL, &relocate);
+ if (ret) {
+ dev_err(qproc->dev, "failed to parse mdt header\n");
+ return ret;
+ }
+
+ if (relocate)
+ boot_addr = qproc->mpss_phys;
+ else
+ boot_addr = fw_addr;
+
+ ehdr = (struct elf32_hdr *)fw->data;
+ phdrs = (struct elf32_phdr *)(ehdr + 1);
+ for (i = 0; i < ehdr->e_phnum; i++, phdr++) {
+ phdr = &phdrs[i];
+
+ if (phdr->p_type != PT_LOAD)
+ continue;
+
+ if ((phdr->p_flags & QCOM_MDT_TYPE_MASK) == QCOM_MDT_TYPE_HASH)
+ continue;
+
+ if (!phdr->p_memsz)
+ continue;
+
+ size = readl(qproc->rmb_base + RMB_PMI_CODE_LENGTH_REG);
+ if (!size) {
+ writel(boot_addr, qproc->rmb_base + RMB_PMI_CODE_START_REG);
+ writel(RMB_CMD_LOAD_READY, qproc->rmb_base + RMB_MBA_COMMAND_REG);
+ }
+
+ size += phdr->p_memsz;
+ writel(size, qproc->rmb_base + RMB_PMI_CODE_LENGTH_REG);
+ }
+
+ val = readl(qproc->rmb_base + RMB_MBA_STATUS_REG);
+ return val < 0 ? val : 0;
+}
+
+static int q6v5_mpss_load(struct q6v5 *qproc)
+{
+ const struct firmware *fw;
+ phys_addr_t fw_addr;
+ bool relocate;
+ int ret;
+
+ ret = request_firmware(&fw, MPSS_FIRMWARE_NAME, qproc->dev);
+ if (ret < 0) {
+ dev_err(qproc->dev, "unable to load " MPSS_FIRMWARE_NAME "\n");
+ return ret;
+ }
+
+ ret = qcom_mdt_parse(fw, &fw_addr, NULL, &relocate);
+ if (ret) {
+ dev_err(qproc->dev, "failed to parse mdt header\n");
+ goto release_firmware;
+ }
+
+ if (relocate)
+ qproc->mpss_reloc = fw_addr;
+
+ /* Initialize the RMB validator */
+ writel(0, qproc->rmb_base + RMB_PMI_CODE_LENGTH_REG);
+
+ ret = q6v5_mpss_init_image(qproc, fw);
+ if (ret)
+ goto release_firmware;
+
+ ret = qcom_mdt_load(qproc->rproc, fw, MPSS_FIRMWARE_NAME);
+ if (ret)
+ goto release_firmware;
+
+ ret = q6v5_mpss_validate(qproc, fw);
+ if (ret)
+ goto release_firmware;
+
+ ret = q6v5_rmb_mba_wait(qproc, RMB_MBA_AUTH_COMPLETE, 10000);
+ if (ret == -ETIMEDOUT)
+ dev_err(qproc->dev, "MPSS authentication timed out\n");
+ else if (ret < 0)
+ dev_err(qproc->dev, "MPSS authentication failed: %d\n", ret);
+
+release_firmware:
+ release_firmware(fw);
+
+ return ret < 0 ? ret : 0;
+}
+
+static int q6v5_start(struct rproc *rproc)
+{
+ struct q6v5 *qproc = (struct q6v5 *)rproc->priv;
+ int ret;
+
+ ret = q6v5_regulator_enable(qproc);
+ if (ret) {
+ dev_err(qproc->dev, "failed to enable supplies\n");
+ return ret;
+ }
+
+ ret = reset_control_deassert(qproc->mss_restart);
+ if (ret) {
+ dev_err(qproc->dev, "failed to deassert mss restart\n");
+ goto disable_vdd;
+ }
+
+ ret = clk_prepare_enable(qproc->ahb_clk);
+ if (ret)
+ goto assert_reset;
+
+ ret = clk_prepare_enable(qproc->axi_clk);
+ if (ret)
+ goto disable_ahb_clk;
+
+ ret = clk_prepare_enable(qproc->rom_clk);
+ if (ret)
+ goto disable_axi_clk;
+
+ writel(qproc->mba_phys, qproc->rmb_base + RMB_MBA_IMAGE_REG);
+
+ ret = q6v5proc_reset(qproc);
+ if (ret)
+ goto halt_axi_ports;
+
+ ret = q6v5_rmb_mba_wait(qproc, 0, 5000);
+ if (ret == -ETIMEDOUT) {
+ dev_err(qproc->dev, "MBA boot timed out\n");
+ goto halt_axi_ports;
+ } else if (ret != RMB_MBA_XPU_UNLOCKED &&
+ ret != RMB_MBA_XPU_UNLOCKED_SCRIBBLED) {
+ dev_err(qproc->dev, "MBA returned unexpected status %d\n", ret);
+ ret = -EINVAL;
+ goto halt_axi_ports;
+ }
+
+ dev_info(qproc->dev, "MBA booted, loading mpss\n");
+
+ ret = q6v5_mpss_load(qproc);
+ if (ret)
+ goto halt_axi_ports;
+
+ ret = wait_for_completion_timeout(&qproc->start_done,
+ msecs_to_jiffies(5000));
+ if (ret == 0) {
+ dev_err(qproc->dev, "start timed out\n");
+ ret = -ETIMEDOUT;
+ goto halt_axi_ports;
+ }
+
+ qproc->running = true;
+
+ /* TODO: All done, release the handover resources */
+
+ return 0;
+
+halt_axi_ports:
+ q6v5proc_halt_axi_port(qproc, qproc->halt_map, qproc->halt_q6);
+ q6v5proc_halt_axi_port(qproc, qproc->halt_map, qproc->halt_modem);
+ q6v5proc_halt_axi_port(qproc, qproc->halt_map, qproc->halt_nc);
+
+ clk_disable_unprepare(qproc->rom_clk);
+disable_axi_clk:
+ clk_disable_unprepare(qproc->axi_clk);
+disable_ahb_clk:
+ clk_disable_unprepare(qproc->ahb_clk);
+assert_reset:
+ reset_control_assert(qproc->mss_restart);
+disable_vdd:
+ q6v5_regulator_disable(qproc);
+
+ return ret;
+}
+
+static int q6v5_stop(struct rproc *rproc)
+{
+ struct q6v5 *qproc = (struct q6v5 *)rproc->priv;
+ int ret;
+
+ qproc->running = false;
+
+ qcom_smem_state_update_bits(qproc->state,
+ BIT(qproc->stop_bit), BIT(qproc->stop_bit));
+
+ ret = wait_for_completion_timeout(&qproc->stop_done,
+ msecs_to_jiffies(5000));
+ if (ret == 0)
+ dev_err(qproc->dev, "timed out on wait\n");
+
+ qcom_smem_state_update_bits(qproc->state, BIT(qproc->stop_bit), 0);
+
+ q6v5proc_halt_axi_port(qproc, qproc->halt_map, qproc->halt_q6);
+ q6v5proc_halt_axi_port(qproc, qproc->halt_map, qproc->halt_modem);
+ q6v5proc_halt_axi_port(qproc, qproc->halt_map, qproc->halt_nc);
+
+ reset_control_assert(qproc->mss_restart);
+ clk_disable_unprepare(qproc->rom_clk);
+ clk_disable_unprepare(qproc->axi_clk);
+ clk_disable_unprepare(qproc->ahb_clk);
+ q6v5_regulator_disable(qproc);
+
+ return 0;
+}
+
+static void *q6v5_da_to_va(struct rproc *rproc, u64 da, int len)
+{
+ struct q6v5 *qproc = rproc->priv;
+ int offset;
+
+ offset = da - qproc->mpss_reloc;
+ if (offset < 0 || offset + len > qproc->mpss_size)
+ return NULL;
+
+ return qproc->mpss_region + offset;
+}
+
+static const struct rproc_ops q6v5_ops = {
+ .start = q6v5_start,
+ .stop = q6v5_stop,
+ .da_to_va = q6v5_da_to_va,
+};
+
+static irqreturn_t q6v5_wdog_interrupt(int irq, void *dev)
+{
+ struct q6v5 *qproc = dev;
+ size_t len;
+ char *msg;
+
+ /* Sometimes the stop triggers a watchdog rather than a stop-ack */
+ if (!qproc->running) {
+ complete(&qproc->stop_done);
+ return IRQ_HANDLED;
+ }
+
+ msg = qcom_smem_get(QCOM_SMEM_HOST_ANY, MPSS_CRASH_REASON_SMEM, &len);
+ if (!IS_ERR(msg) && len > 0 && msg[0])
+ dev_err(qproc->dev, "watchdog received: %s\n", msg);
+ else
+ dev_err(qproc->dev, "watchdog without message\n");
+
+ rproc_report_crash(qproc->rproc, RPROC_WATCHDOG);
+
+ if (!IS_ERR(msg))
+ msg[0] = '\0';
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t q6v5_fatal_interrupt(int irq, void *dev)
+{
+ struct q6v5 *qproc = dev;
+ size_t len;
+ char *msg;
+
+ msg = qcom_smem_get(QCOM_SMEM_HOST_ANY, MPSS_CRASH_REASON_SMEM, &len);
+ if (!IS_ERR(msg) && len > 0 && msg[0])
+ dev_err(qproc->dev, "fatal error received: %s\n", msg);
+ else
+ dev_err(qproc->dev, "fatal error without message\n");
+
+ rproc_report_crash(qproc->rproc, RPROC_FATAL_ERROR);
+
+ if (!IS_ERR(msg))
+ msg[0] = '\0';
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t q6v5_handover_interrupt(int irq, void *dev)
+{
+ struct q6v5 *qproc = dev;
+
+ complete(&qproc->start_done);
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t q6v5_stop_ack_interrupt(int irq, void *dev)
+{
+ struct q6v5 *qproc = dev;
+
+ complete(&qproc->stop_done);
+ return IRQ_HANDLED;
+}
+
+static int q6v5_init_mem(struct q6v5 *qproc, struct platform_device *pdev)
+{
+ struct of_phandle_args args;
+ struct resource *res;
+ int ret;
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "qdsp6");
+ qproc->reg_base = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(qproc->reg_base)) {
+ dev_err(qproc->dev, "failed to get qdsp6_base\n");
+ return PTR_ERR(qproc->reg_base);
+ }
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "rmb");
+ qproc->rmb_base = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(qproc->rmb_base)) {
+ dev_err(qproc->dev, "failed to get rmb_base\n");
+ return PTR_ERR(qproc->rmb_base);
+ }
+
+ ret = of_parse_phandle_with_fixed_args(pdev->dev.of_node,
+ "qcom,halt-regs", 3, 0, &args);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "failed to parse qcom,halt-regs\n");
+ return -EINVAL;
+ }
+
+ qproc->halt_map = syscon_node_to_regmap(args.np);
+ of_node_put(args.np);
+ if (IS_ERR(qproc->halt_map))
+ return PTR_ERR(qproc->halt_map);
+
+ qproc->halt_q6 = args.args[0];
+ qproc->halt_modem = args.args[1];
+ qproc->halt_nc = args.args[2];
+
+ return 0;
+}
+
+static int q6v5_init_clocks(struct q6v5 *qproc)
+{
+ qproc->ahb_clk = devm_clk_get(qproc->dev, "iface");
+ if (IS_ERR(qproc->ahb_clk)) {
+ dev_err(qproc->dev, "failed to get iface clock\n");
+ return PTR_ERR(qproc->ahb_clk);
+ }
+
+ qproc->axi_clk = devm_clk_get(qproc->dev, "bus");
+ if (IS_ERR(qproc->axi_clk)) {
+ dev_err(qproc->dev, "failed to get bus clock\n");
+ return PTR_ERR(qproc->axi_clk);
+ }
+
+ qproc->rom_clk = devm_clk_get(qproc->dev, "mem");
+ if (IS_ERR(qproc->rom_clk)) {
+ dev_err(qproc->dev, "failed to get mem clock\n");
+ return PTR_ERR(qproc->rom_clk);
+ }
+
+ return 0;
+}
+
+static int q6v5_init_reset(struct q6v5 *qproc)
+{
+ qproc->mss_restart = devm_reset_control_get(qproc->dev, NULL);
+ if (IS_ERR(qproc->mss_restart)) {
+ dev_err(qproc->dev, "failed to acquire mss restart\n");
+ return PTR_ERR(qproc->mss_restart);
+ }
+
+ return 0;
+}
+
+static int q6v5_request_irq(struct q6v5 *qproc,
+ struct platform_device *pdev,
+ const char *name,
+ irq_handler_t thread_fn)
+{
+ int ret;
+
+ ret = platform_get_irq_byname(pdev, name);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "no %s IRQ defined\n", name);
+ return ret;
+ }
+
+ ret = devm_request_threaded_irq(&pdev->dev, ret,
+ NULL, thread_fn,
+ IRQF_TRIGGER_RISING | IRQF_ONESHOT,
+ "q6v5", qproc);
+ if (ret)
+ dev_err(&pdev->dev, "request %s IRQ failed\n", name);
+
+ return ret;
+}
+
+static int q6v5_alloc_memory_region(struct q6v5 *qproc)
+{
+ struct device_node *child;
+ struct device_node *node;
+ struct resource r;
+ int ret;
+
+ child = of_get_child_by_name(qproc->dev->of_node, "mba");
+ node = of_parse_phandle(child, "memory-region", 0);
+ ret = of_address_to_resource(node, 0, &r);
+ if (ret) {
+ dev_err(qproc->dev, "unable to resolve mba region\n");
+ return ret;
+ }
+
+ 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;
+ }
+
+ child = of_get_child_by_name(qproc->dev->of_node, "mpss");
+ node = of_parse_phandle(child, "memory-region", 0);
+ ret = of_address_to_resource(node, 0, &r);
+ if (ret) {
+ dev_err(qproc->dev, "unable to resolve mpss region\n");
+ return ret;
+ }
+
+ qproc->mpss_phys = qproc->mpss_reloc = r.start;
+ qproc->mpss_size = resource_size(&r);
+ qproc->mpss_region = devm_ioremap_wc(qproc->dev, qproc->mpss_phys, qproc->mpss_size);
+ if (!qproc->mpss_region) {
+ dev_err(qproc->dev, "unable to map memory region: %pa+%zx\n",
+ &r.start, qproc->mpss_size);
+ return -EBUSY;
+ }
+
+ return 0;
+}
+
+static int q6v5_probe(struct platform_device *pdev)
+{
+ struct q6v5 *qproc;
+ struct rproc *rproc;
+ int ret;
+
+ rproc = rproc_alloc(&pdev->dev, pdev->name, &q6v5_ops,
+ MBA_FIRMWARE_NAME, sizeof(*qproc));
+ if (!rproc) {
+ dev_err(&pdev->dev, "failed to allocate rproc\n");
+ return -ENOMEM;
+ }
+
+ rproc->fw_ops = &q6v5_fw_ops;
+
+ qproc = (struct q6v5 *)rproc->priv;
+ qproc->dev = &pdev->dev;
+ qproc->rproc = rproc;
+ platform_set_drvdata(pdev, qproc);
+
+ init_completion(&qproc->start_done);
+ init_completion(&qproc->stop_done);
+
+ ret = q6v5_init_mem(qproc, pdev);
+ if (ret)
+ goto free_rproc;
+
+ ret = q6v5_alloc_memory_region(qproc);
+ if (ret)
+ goto free_rproc;
+
+ ret = q6v5_init_clocks(qproc);
+ if (ret)
+ goto free_rproc;
+
+ ret = q6v5_regulator_init(qproc);
+ if (ret)
+ goto free_rproc;
+
+ ret = q6v5_init_reset(qproc);
+ if (ret)
+ goto free_rproc;
+
+ ret = q6v5_request_irq(qproc, pdev, "wdog", q6v5_wdog_interrupt);
+ if (ret < 0)
+ goto free_rproc;
+
+ ret = q6v5_request_irq(qproc, pdev, "fatal", q6v5_fatal_interrupt);
+ if (ret < 0)
+ goto free_rproc;
+
+ ret = q6v5_request_irq(qproc, pdev, "handover", q6v5_handover_interrupt);
+ if (ret < 0)
+ goto free_rproc;
+
+ ret = q6v5_request_irq(qproc, pdev, "stop-ack", q6v5_stop_ack_interrupt);
+ if (ret < 0)
+ goto free_rproc;
+
+ qproc->state = qcom_smem_state_get(&pdev->dev, "stop", &qproc->stop_bit);
+ if (IS_ERR(qproc->state))
+ goto free_rproc;
+
+ ret = rproc_add(rproc);
+ if (ret)
+ goto free_rproc;
+
+ return 0;
+
+free_rproc:
+ rproc_put(rproc);
+
+ return ret;
+}
+
+static int q6v5_remove(struct platform_device *pdev)
+{
+ struct q6v5 *qproc = platform_get_drvdata(pdev);
+
+ rproc_del(qproc->rproc);
+ rproc_put(qproc->rproc);
+
+ return 0;
+}
+
+static const struct of_device_id q6v5_of_match[] = {
+ { .compatible = "qcom,q6v5-pil", },
+ { },
+};
+
+static struct platform_driver q6v5_driver = {
+ .probe = q6v5_probe,
+ .remove = q6v5_remove,
+ .driver = {
+ .name = "qcom-q6v5-pil",
+ .of_match_table = q6v5_of_match,
+ },
+};
+module_platform_driver(q6v5_driver);
+
+MODULE_DESCRIPTION("Peripheral Image Loader for Hexagon");
+MODULE_LICENSE("GPL v2");
projects / GitHub / moto-9609 / android_kernel_motorola_exynos9610.git / commitdiff