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WSL2-Linux-Kernel
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WSL2-Linux-Kernel/drivers/remoteproc/qcom_q6v5_pil.c

1352 строки
32 KiB
C
Исходник Ответственный История

/*
* 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/of_device.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/mdt_loader.h>
#include <linux/soc/qcom/smem.h>
#include <linux/soc/qcom/smem_state.h>
#include <linux/iopoll.h>
#include "remoteproc_internal.h"
#include "qcom_common.h"
#include <linux/qcom_scm.h>
#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
#define QDSP6SS_MEM_PWR_CTL 0x0B0
#define QDSP6SS_STRAP_ACC 0x110
/* 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)
/* QDSP6v56 parameters */
#define QDSP6v56_LDO_BYP BIT(25)
#define QDSP6v56_BHS_ON BIT(24)
#define QDSP6v56_CLAMP_WL BIT(21)
#define QDSP6v56_CLAMP_QMC_MEM BIT(22)
#define HALT_CHECK_MAX_LOOPS 200
#define QDSP6SS_XO_CBCR 0x0038
#define QDSP6SS_ACC_OVERRIDE_VAL 0x20
struct reg_info {
struct regulator *reg;
int uV;
int uA;
};
struct qcom_mss_reg_res {
const char *supply;
int uV;
int uA;
};
struct rproc_hexagon_res {
const char *hexagon_mba_image;
struct qcom_mss_reg_res *proxy_supply;
struct qcom_mss_reg_res *active_supply;
char **proxy_clk_names;
char **active_clk_names;
int version;
bool need_mem_protection;
};
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 clk *active_clks[8];
struct clk *proxy_clks[4];
int active_clk_count;
int proxy_clk_count;
struct reg_info active_regs[1];
struct reg_info proxy_regs[3];
int active_reg_count;
int proxy_reg_count;
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;
struct qcom_rproc_subdev smd_subdev;
struct qcom_rproc_ssr ssr_subdev;
struct qcom_sysmon *sysmon;
bool need_mem_protection;
int mpss_perm;
int mba_perm;
int version;
};
enum {
MSS_MSM8916,
MSS_MSM8974,
MSS_MSM8996,
};
static int q6v5_regulator_init(struct device *dev, struct reg_info *regs,
const struct qcom_mss_reg_res *reg_res)
{
int rc;
int i;
if (!reg_res)
return 0;
for (i = 0; reg_res[i].supply; i++) {
regs[i].reg = devm_regulator_get(dev, reg_res[i].supply);
if (IS_ERR(regs[i].reg)) {
rc = PTR_ERR(regs[i].reg);
if (rc != -EPROBE_DEFER)
dev_err(dev, "Failed to get %s\n regulator",
reg_res[i].supply);
return rc;
}
regs[i].uV = reg_res[i].uV;
regs[i].uA = reg_res[i].uA;
}
return i;
}
static int q6v5_regulator_enable(struct q6v5 *qproc,
struct reg_info *regs, int count)
{
int ret;
int i;
for (i = 0; i < count; i++) {
if (regs[i].uV > 0) {
ret = regulator_set_voltage(regs[i].reg,
regs[i].uV, INT_MAX);
if (ret) {
dev_err(qproc->dev,
"Failed to request voltage for %d.\n",
i);
goto err;
}
}
if (regs[i].uA > 0) {
ret = regulator_set_load(regs[i].reg,
regs[i].uA);
if (ret < 0) {
dev_err(qproc->dev,
"Failed to set regulator mode\n");
goto err;
}
}
ret = regulator_enable(regs[i].reg);
if (ret) {
dev_err(qproc->dev, "Regulator enable failed\n");
goto err;
}
}
return 0;
err:
for (; i >= 0; i--) {
if (regs[i].uV > 0)
regulator_set_voltage(regs[i].reg, 0, INT_MAX);
if (regs[i].uA > 0)
regulator_set_load(regs[i].reg, 0);
regulator_disable(regs[i].reg);
}
return ret;
}
static void q6v5_regulator_disable(struct q6v5 *qproc,
struct reg_info *regs, int count)
{
int i;
for (i = 0; i < count; i++) {
if (regs[i].uV > 0)
regulator_set_voltage(regs[i].reg, 0, INT_MAX);
if (regs[i].uA > 0)
regulator_set_load(regs[i].reg, 0);
regulator_disable(regs[i].reg);
}
}
static int q6v5_clk_enable(struct device *dev,
struct clk **clks, int count)
{
int rc;
int i;
for (i = 0; i < count; i++) {
rc = clk_prepare_enable(clks[i]);
if (rc) {
dev_err(dev, "Clock enable failed\n");
goto err;
}
}
return 0;
err:
for (i--; i >= 0; i--)
clk_disable_unprepare(clks[i]);
return rc;
}
static void q6v5_clk_disable(struct device *dev,
struct clk **clks, int count)
{
int i;
for (i = 0; i < count; i++)
clk_disable_unprepare(clks[i]);
}
static int q6v5_xfer_mem_ownership(struct q6v5 *qproc, int *current_perm,
bool remote_owner, phys_addr_t addr,
size_t size)
{
struct qcom_scm_vmperm next;
if (!qproc->need_mem_protection)
return 0;
if (remote_owner && *current_perm == BIT(QCOM_SCM_VMID_MSS_MSA))
return 0;
if (!remote_owner && *current_perm == BIT(QCOM_SCM_VMID_HLOS))
return 0;
next.vmid = remote_owner ? QCOM_SCM_VMID_MSS_MSA : QCOM_SCM_VMID_HLOS;
next.perm = remote_owner ? QCOM_SCM_PERM_RW : QCOM_SCM_PERM_RWX;
return qcom_scm_assign_mem(addr, ALIGN(size, SZ_4K),
current_perm, &next, 1);
}
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 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;
int i;
if (qproc->version == MSS_MSM8996) {
/* Override the ACC value if required */
writel(QDSP6SS_ACC_OVERRIDE_VAL,
qproc->reg_base + QDSP6SS_STRAP_ACC);
/* 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);
/* BHS require xo cbcr to be enabled */
val = readl(qproc->reg_base + QDSP6SS_XO_CBCR);
val |= 0x1;
writel(val, qproc->reg_base + QDSP6SS_XO_CBCR);
/* Read CLKOFF bit to go low indicating CLK is enabled */
ret = readl_poll_timeout(qproc->reg_base + QDSP6SS_XO_CBCR,
val, !(val & BIT(31)), 1,
HALT_CHECK_MAX_LOOPS);
if (ret) {
dev_err(qproc->dev,
"xo cbcr enabling timed out (rc:%d)\n", ret);
return ret;
}
/* Enable power block headswitch and wait for it to stabilize */
val = readl(qproc->reg_base + QDSP6SS_PWR_CTL_REG);
val |= QDSP6v56_BHS_ON;
writel(val, qproc->reg_base + QDSP6SS_PWR_CTL_REG);
val |= readl(qproc->reg_base + QDSP6SS_PWR_CTL_REG);
udelay(1);
/* Put LDO in bypass mode */
val |= QDSP6v56_LDO_BYP;
writel(val, qproc->reg_base + QDSP6SS_PWR_CTL_REG);
/* Deassert QDSP6 compiler memory clamp */
val = readl(qproc->reg_base + QDSP6SS_PWR_CTL_REG);
val &= ~QDSP6v56_CLAMP_QMC_MEM;
writel(val, qproc->reg_base + QDSP6SS_PWR_CTL_REG);
/* Deassert memory peripheral sleep and L2 memory standby */
val |= Q6SS_L2DATA_STBY_N | Q6SS_SLP_RET_N;
writel(val, qproc->reg_base + QDSP6SS_PWR_CTL_REG);
/* Turn on L1, L2, ETB and JU memories 1 at a time */
val = readl(qproc->reg_base + QDSP6SS_MEM_PWR_CTL);
for (i = 19; i >= 0; i--) {
val |= BIT(i);
writel(val, qproc->reg_base +
QDSP6SS_MEM_PWR_CTL);
/*
* Read back value to ensure the write is done then
* wait for 1us for both memory peripheral and data
* array to turn on.
*/
val |= readl(qproc->reg_base + QDSP6SS_MEM_PWR_CTL);
udelay(1);
}
/* Remove word line clamp */
val = readl(qproc->reg_base + QDSP6SS_PWR_CTL_REG);
val &= ~QDSP6v56_CLAMP_WL;
writel(val, qproc->reg_base + QDSP6SS_PWR_CTL_REG);
} else {
/* 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);
val |= readl(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)
{
unsigned long dma_attrs = DMA_ATTR_FORCE_CONTIGUOUS;
dma_addr_t phys;
int mdata_perm;
int xferop_ret;
void *ptr;
int ret;
ptr = dma_alloc_attrs(qproc->dev, fw->size, &phys, GFP_KERNEL, dma_attrs);
if (!ptr) {
dev_err(qproc->dev, "failed to allocate mdt buffer\n");
return -ENOMEM;
}
memcpy(ptr, fw->data, fw->size);
/* Hypervisor mapping to access metadata by modem */
mdata_perm = BIT(QCOM_SCM_VMID_HLOS);
ret = q6v5_xfer_mem_ownership(qproc, &mdata_perm,
true, phys, fw->size);
if (ret) {
dev_err(qproc->dev,
"assigning Q6 access to metadata failed: %d\n", ret);
ret = -EAGAIN;
goto free_dma_attrs;
}
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);
/* Metadata authentication done, remove modem access */
xferop_ret = q6v5_xfer_mem_ownership(qproc, &mdata_perm,
false, phys, fw->size);
if (xferop_ret)
dev_warn(qproc->dev,
"mdt buffer not reclaimed system may become unstable\n");
free_dma_attrs:
dma_free_attrs(qproc->dev, fw->size, ptr, phys, dma_attrs);
return ret < 0 ? ret : 0;
}
static bool q6v5_phdr_valid(const struct elf32_phdr *phdr)
{
if (phdr->p_type != PT_LOAD)
return false;
if ((phdr->p_flags & QCOM_MDT_TYPE_MASK) == QCOM_MDT_TYPE_HASH)
return false;
if (!phdr->p_memsz)
return false;
return true;
}
static int q6v5_mpss_load(struct q6v5 *qproc)
{
const struct elf32_phdr *phdrs;
const struct elf32_phdr *phdr;
const struct firmware *seg_fw;
const struct firmware *fw;
struct elf32_hdr *ehdr;
phys_addr_t mpss_reloc;
phys_addr_t boot_addr;
phys_addr_t min_addr = (phys_addr_t)ULLONG_MAX;
phys_addr_t max_addr = 0;
bool relocate = false;
char seg_name[10];
ssize_t offset;
size_t size = 0;
void *ptr;
int ret;
int i;
ret = request_firmware(&fw, "modem.mdt", qproc->dev);
if (ret < 0) {
dev_err(qproc->dev, "unable to load modem.mdt\n");
return ret;
}
/* 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;
ehdr = (struct elf32_hdr *)fw->data;
phdrs = (struct elf32_phdr *)(ehdr + 1);
for (i = 0; i < ehdr->e_phnum; i++) {
phdr = &phdrs[i];
if (!q6v5_phdr_valid(phdr))
continue;
if (phdr->p_flags & QCOM_MDT_RELOCATABLE)
relocate = true;
if (phdr->p_paddr < min_addr)
min_addr = phdr->p_paddr;
if (phdr->p_paddr + phdr->p_memsz > max_addr)
max_addr = ALIGN(phdr->p_paddr + phdr->p_memsz, SZ_4K);
}
mpss_reloc = relocate ? min_addr : qproc->mpss_phys;
/* Load firmware segments */
for (i = 0; i < ehdr->e_phnum; i++) {
phdr = &phdrs[i];
if (!q6v5_phdr_valid(phdr))
continue;
offset = phdr->p_paddr - mpss_reloc;
if (offset < 0 || offset + phdr->p_memsz > qproc->mpss_size) {
dev_err(qproc->dev, "segment outside memory range\n");
ret = -EINVAL;
goto release_firmware;
}
ptr = qproc->mpss_region + offset;
if (phdr->p_filesz) {
snprintf(seg_name, sizeof(seg_name), "modem.b%02d", i);
ret = request_firmware(&seg_fw, seg_name, qproc->dev);
if (ret) {
dev_err(qproc->dev, "failed to load %s\n", seg_name);
goto release_firmware;
}
memcpy(ptr, seg_fw->data, seg_fw->size);
release_firmware(seg_fw);
}
if (phdr->p_memsz > phdr->p_filesz) {
memset(ptr + phdr->p_filesz, 0,
phdr->p_memsz - phdr->p_filesz);
}
size += phdr->p_memsz;
}
/* Transfer ownership of modem ddr region to q6 */
ret = q6v5_xfer_mem_ownership(qproc, &qproc->mpss_perm, true,
qproc->mpss_phys, qproc->mpss_size);
if (ret) {
dev_err(qproc->dev,
"assigning Q6 access to mpss memory failed: %d\n", ret);
ret = -EAGAIN;
goto release_firmware;
}
boot_addr = relocate ? qproc->mpss_phys : min_addr;
writel(boot_addr, qproc->rmb_base + RMB_PMI_CODE_START_REG);
writel(RMB_CMD_LOAD_READY, qproc->rmb_base + RMB_MBA_COMMAND_REG);
writel(size, qproc->rmb_base + RMB_PMI_CODE_LENGTH_REG);
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 xfermemop_ret;
int ret;
ret = q6v5_regulator_enable(qproc, qproc->proxy_regs,
qproc->proxy_reg_count);
if (ret) {
dev_err(qproc->dev, "failed to enable proxy supplies\n");
return ret;
}
ret = q6v5_clk_enable(qproc->dev, qproc->proxy_clks,
qproc->proxy_clk_count);
if (ret) {
dev_err(qproc->dev, "failed to enable proxy clocks\n");
goto disable_proxy_reg;
}
ret = q6v5_regulator_enable(qproc, qproc->active_regs,
qproc->active_reg_count);
if (ret) {
dev_err(qproc->dev, "failed to enable supplies\n");
goto disable_proxy_clk;
}
ret = reset_control_deassert(qproc->mss_restart);
if (ret) {
dev_err(qproc->dev, "failed to deassert mss restart\n");
goto disable_vdd;
}
ret = q6v5_clk_enable(qproc->dev, qproc->active_clks,
qproc->active_clk_count);
if (ret) {
dev_err(qproc->dev, "failed to enable clocks\n");
goto assert_reset;
}
/* Assign MBA image access in DDR to q6 */
xfermemop_ret = q6v5_xfer_mem_ownership(qproc, &qproc->mba_perm, true,
qproc->mba_phys,
qproc->mba_size);
if (xfermemop_ret) {
dev_err(qproc->dev,
"assigning Q6 access to mba memory failed: %d\n",
xfermemop_ret);
goto disable_active_clks;
}
writel(qproc->mba_phys, qproc->rmb_base + RMB_MBA_IMAGE_REG);
ret = q6v5proc_reset(qproc);
if (ret)
goto reclaim_mba;
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 reclaim_mpss;
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 reclaim_mpss;
}
xfermemop_ret = q6v5_xfer_mem_ownership(qproc, &qproc->mba_perm, false,
qproc->mba_phys,
qproc->mba_size);
if (xfermemop_ret)
dev_err(qproc->dev,
"Failed to reclaim mba buffer system may become unstable\n");
qproc->running = true;
q6v5_clk_disable(qproc->dev, qproc->proxy_clks,
qproc->proxy_clk_count);
q6v5_regulator_disable(qproc, qproc->proxy_regs,
qproc->proxy_reg_count);
return 0;
reclaim_mpss:
xfermemop_ret = q6v5_xfer_mem_ownership(qproc, &qproc->mpss_perm,
false, qproc->mpss_phys,
qproc->mpss_size);
WARN_ON(xfermemop_ret);
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);
reclaim_mba:
xfermemop_ret = q6v5_xfer_mem_ownership(qproc, &qproc->mba_perm, false,
qproc->mba_phys,
qproc->mba_size);
if (xfermemop_ret) {
dev_err(qproc->dev,
"Failed to reclaim mba buffer, system may become unstable\n");
}
disable_active_clks:
q6v5_clk_disable(qproc->dev, qproc->active_clks,
qproc->active_clk_count);
assert_reset:
reset_control_assert(qproc->mss_restart);
disable_vdd:
q6v5_regulator_disable(qproc, qproc->active_regs,
qproc->active_reg_count);
disable_proxy_clk:
q6v5_clk_disable(qproc->dev, qproc->proxy_clks,
qproc->proxy_clk_count);
disable_proxy_reg:
q6v5_regulator_disable(qproc, qproc->proxy_regs,
qproc->proxy_reg_count);
return ret;
}
static int q6v5_stop(struct rproc *rproc)
{
struct q6v5 *qproc = (struct q6v5 *)rproc->priv;
int ret;
u32 val;
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);
if (qproc->version == MSS_MSM8996) {
/*
* To avoid high MX current during LPASS/MSS restart.
*/
val = readl(qproc->reg_base + QDSP6SS_PWR_CTL_REG);
val |= Q6SS_CLAMP_IO | QDSP6v56_CLAMP_WL |
QDSP6v56_CLAMP_QMC_MEM;
writel(val, qproc->reg_base + QDSP6SS_PWR_CTL_REG);
}
ret = q6v5_xfer_mem_ownership(qproc, &qproc->mpss_perm, false,
qproc->mpss_phys, qproc->mpss_size);
WARN_ON(ret);
reset_control_assert(qproc->mss_restart);
q6v5_clk_disable(qproc->dev, qproc->active_clks,
qproc->active_clk_count);
q6v5_regulator_disable(qproc, qproc->active_regs,
qproc->active_reg_count);
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,
.load = q6v5_load,
};
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);
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);
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))
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))
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 device *dev, struct clk **clks,
char **clk_names)
{
int i;
if (!clk_names)
return 0;
for (i = 0; clk_names[i]; i++) {
clks[i] = devm_clk_get(dev, clk_names[i]);
if (IS_ERR(clks[i])) {
int rc = PTR_ERR(clks[i]);
if (rc != -EPROBE_DEFER)
dev_err(dev, "Failed to get %s clock\n",
clk_names[i]);
return rc;
}
}
return i;
}
static int q6v5_init_reset(struct q6v5 *qproc)
{
qproc->mss_restart = devm_reset_control_get_exclusive(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;
}
of_node_put(node);
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;
}
of_node_put(node);
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)
{
const struct rproc_hexagon_res *desc;
struct q6v5 *qproc;
struct rproc *rproc;
int ret;
desc = of_device_get_match_data(&pdev->dev);
if (!desc)
return -EINVAL;
rproc = rproc_alloc(&pdev->dev, pdev->name, &q6v5_ops,
desc->hexagon_mba_image, sizeof(*qproc));
if (!rproc) {
dev_err(&pdev->dev, "failed to allocate rproc\n");
return -ENOMEM;
}
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(&pdev->dev, qproc->proxy_clks,
desc->proxy_clk_names);
if (ret < 0) {
dev_err(&pdev->dev, "Failed to get proxy clocks.\n");
goto free_rproc;
}
qproc->proxy_clk_count = ret;
ret = q6v5_init_clocks(&pdev->dev, qproc->active_clks,
desc->active_clk_names);
if (ret < 0) {
dev_err(&pdev->dev, "Failed to get active clocks.\n");
goto free_rproc;
}
qproc->active_clk_count = ret;
ret = q6v5_regulator_init(&pdev->dev, qproc->proxy_regs,
desc->proxy_supply);
if (ret < 0) {
dev_err(&pdev->dev, "Failed to get proxy regulators.\n");
goto free_rproc;
}
qproc->proxy_reg_count = ret;
ret = q6v5_regulator_init(&pdev->dev, qproc->active_regs,
desc->active_supply);
if (ret < 0) {
dev_err(&pdev->dev, "Failed to get active regulators.\n");
goto free_rproc;
}
qproc->active_reg_count = ret;
ret = q6v5_init_reset(qproc);
if (ret)
goto free_rproc;
qproc->version = desc->version;
qproc->need_mem_protection = desc->need_mem_protection;
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)) {
ret = PTR_ERR(qproc->state);
goto free_rproc;
}
qproc->mpss_perm = BIT(QCOM_SCM_VMID_HLOS);
qproc->mba_perm = BIT(QCOM_SCM_VMID_HLOS);
qcom_add_smd_subdev(rproc, &qproc->smd_subdev);
qcom_add_ssr_subdev(rproc, &qproc->ssr_subdev, "mpss");
qproc->sysmon = qcom_add_sysmon_subdev(rproc, "modem", 0x12);
ret = rproc_add(rproc);
if (ret)
goto free_rproc;
return 0;
free_rproc:
rproc_free(rproc);
return ret;
}
static int q6v5_remove(struct platform_device *pdev)
{
struct q6v5 *qproc = platform_get_drvdata(pdev);
rproc_del(qproc->rproc);
qcom_remove_sysmon_subdev(qproc->sysmon);
qcom_remove_smd_subdev(qproc->rproc, &qproc->smd_subdev);
qcom_remove_ssr_subdev(qproc->rproc, &qproc->ssr_subdev);
rproc_free(qproc->rproc);
return 0;
}
static const struct rproc_hexagon_res msm8996_mss = {
.hexagon_mba_image = "mba.mbn",
.proxy_clk_names = (char*[]){
"xo",
"pnoc",
NULL
},
.active_clk_names = (char*[]){
"iface",
"bus",
"mem",
"gpll0_mss_clk",
NULL
},
.need_mem_protection = true,
.version = MSS_MSM8996,
};
static const struct rproc_hexagon_res msm8916_mss = {
.hexagon_mba_image = "mba.mbn",
.proxy_supply = (struct qcom_mss_reg_res[]) {
{
.supply = "mx",
.uV = 1050000,
},
{
.supply = "cx",
.uA = 100000,
},
{
.supply = "pll",
.uA = 100000,
},
{}
},
.proxy_clk_names = (char*[]){
"xo",
NULL
},
.active_clk_names = (char*[]){
"iface",
"bus",
"mem",
NULL
},
.need_mem_protection = false,
.version = MSS_MSM8916,
};
static const struct rproc_hexagon_res msm8974_mss = {
.hexagon_mba_image = "mba.b00",
.proxy_supply = (struct qcom_mss_reg_res[]) {
{
.supply = "mx",
.uV = 1050000,
},
{
.supply = "cx",
.uA = 100000,
},
{
.supply = "pll",
.uA = 100000,
},
{}
},
.active_supply = (struct qcom_mss_reg_res[]) {
{
.supply = "mss",
.uV = 1050000,
.uA = 100000,
},
{}
},
.proxy_clk_names = (char*[]){
"xo",
NULL
},
.active_clk_names = (char*[]){
"iface",
"bus",
"mem",
NULL
},
.need_mem_protection = false,
.version = MSS_MSM8974,
};
static const struct of_device_id q6v5_of_match[] = {
{ .compatible = "qcom,q6v5-pil", .data = &msm8916_mss},
{ .compatible = "qcom,msm8916-mss-pil", .data = &msm8916_mss},
{ .compatible = "qcom,msm8974-mss-pil", .data = &msm8974_mss},
{ .compatible = "qcom,msm8996-mss-pil", .data = &msm8996_mss},
{ },
};
MODULE_DEVICE_TABLE(of, q6v5_of_match);
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");
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