diff options
| -rw-r--r-- | drivers/gpu/drm/msm/adreno/a5xx_gpu.c | 4 | ||||
| -rw-r--r-- | drivers/media/platform/qcom/venus/firmware.c | 2 | ||||
| -rw-r--r-- | drivers/remoteproc/Kconfig | 19 | ||||
| -rw-r--r-- | drivers/remoteproc/Makefile | 1 | ||||
| -rw-r--r-- | drivers/remoteproc/imx_rproc.c | 23 | ||||
| -rw-r--r-- | drivers/remoteproc/qcom_adsp_pil.c | 20 | ||||
| -rw-r--r-- | drivers/remoteproc/qcom_common.c | 56 | ||||
| -rw-r--r-- | drivers/remoteproc/qcom_common.h | 23 | ||||
| -rw-r--r-- | drivers/remoteproc/qcom_q6v5_pil.c | 9 | ||||
| -rw-r--r-- | drivers/remoteproc/qcom_sysmon.c | 579 | ||||
| -rw-r--r-- | drivers/remoteproc/qcom_wcnss.c | 11 | ||||
| -rw-r--r-- | drivers/remoteproc/remoteproc_core.c | 152 | ||||
| -rw-r--r-- | drivers/remoteproc/remoteproc_internal.h | 7 | ||||
| -rw-r--r-- | drivers/soc/qcom/Kconfig | 2 | ||||
| -rw-r--r-- | drivers/soc/qcom/mdt_loader.c | 7 | ||||
| -rw-r--r-- | include/linux/remoteproc.h | 27 | ||||
| -rw-r--r-- | include/linux/soc/qcom/mdt_loader.h | 3 | ||||
| -rw-r--r-- | samples/Kconfig | 10 | ||||
| -rw-r--r-- | samples/Makefile | 2 | ||||
| -rw-r--r-- | samples/qmi/Makefile | 1 | ||||
| -rw-r--r-- | samples/qmi/qmi_sample_client.c | 622 |
21 files changed, 1524 insertions, 56 deletions
diff --git a/drivers/gpu/drm/msm/adreno/a5xx_gpu.c b/drivers/gpu/drm/msm/adreno/a5xx_gpu.c index a4f68affc13b..d39400e5bc42 100644 --- a/drivers/gpu/drm/msm/adreno/a5xx_gpu.c +++ b/drivers/gpu/drm/msm/adreno/a5xx_gpu.c @@ -89,14 +89,14 @@ static int zap_shader_load_mdt(struct msm_gpu *gpu, const char *fwname) */ if (to_adreno_gpu(gpu)->fwloc == FW_LOCATION_LEGACY) { ret = qcom_mdt_load(dev, fw, fwname, GPU_PAS_ID, - mem_region, mem_phys, mem_size); + mem_region, mem_phys, mem_size, NULL); } else { char newname[strlen("qcom/") + strlen(fwname) + 1]; sprintf(newname, "qcom/%s", fwname); ret = qcom_mdt_load(dev, fw, newname, GPU_PAS_ID, - mem_region, mem_phys, mem_size); + mem_region, mem_phys, mem_size, NULL); } if (ret) goto out; diff --git a/drivers/media/platform/qcom/venus/firmware.c b/drivers/media/platform/qcom/venus/firmware.c index 521d4b36c090..c4a577848dd7 100644 --- a/drivers/media/platform/qcom/venus/firmware.c +++ b/drivers/media/platform/qcom/venus/firmware.c @@ -76,7 +76,7 @@ int venus_boot(struct device *dev, const char *fwname) } ret = qcom_mdt_load(dev, mdt, fwname, VENUS_PAS_ID, mem_va, mem_phys, - mem_size); + mem_size, NULL); release_firmware(mdt); diff --git a/drivers/remoteproc/Kconfig b/drivers/remoteproc/Kconfig index b609e1d3654b..027274008b08 100644 --- a/drivers/remoteproc/Kconfig +++ b/drivers/remoteproc/Kconfig @@ -6,6 +6,7 @@ config REMOTEPROC select CRC32 select FW_LOADER select VIRTIO + select WANT_DEV_COREDUMP help Support for remote processors (such as DSP coprocessors). These are mainly used on embedded systems. @@ -90,6 +91,7 @@ config QCOM_ADSP_PIL depends on QCOM_SMEM depends on RPMSG_QCOM_SMD || (COMPILE_TEST && RPMSG_QCOM_SMD=n) depends on RPMSG_QCOM_GLINK_SMEM || RPMSG_QCOM_GLINK_SMEM=n + depends on QCOM_SYSMON || QCOM_SYSMON=n select MFD_SYSCON select QCOM_MDT_LOADER select QCOM_RPROC_COMMON @@ -107,6 +109,7 @@ config QCOM_Q6V5_PIL depends on QCOM_SMEM depends on RPMSG_QCOM_SMD || (COMPILE_TEST && RPMSG_QCOM_SMD=n) depends on RPMSG_QCOM_GLINK_SMEM || RPMSG_QCOM_GLINK_SMEM=n + depends on QCOM_SYSMON || QCOM_SYSMON=n select MFD_SYSCON select QCOM_RPROC_COMMON select QCOM_SCM @@ -114,12 +117,28 @@ config QCOM_Q6V5_PIL Say y here to support the Qualcomm Peripherial Image Loader for the Hexagon V5 based remote processors. +config QCOM_SYSMON + tristate "Qualcomm sysmon driver" + depends on RPMSG + depends on ARCH_QCOM + depends on NET + select QCOM_QMI_HELPERS + help + The sysmon driver implements a sysmon QMI client and a handler for + the sys_mon SMD and GLINK channel, which are used for graceful + shutdown, retrieving failure information and propagating information + about other subsystems being shut down. + + Say y here if your system runs firmware on any other subsystems, e.g. + modem or DSP. + config QCOM_WCNSS_PIL tristate "Qualcomm WCNSS Peripheral Image Loader" depends on OF && ARCH_QCOM depends on RPMSG_QCOM_SMD || (COMPILE_TEST && RPMSG_QCOM_SMD=n) depends on RPMSG_QCOM_GLINK_SMEM || RPMSG_QCOM_GLINK_SMEM=n depends on QCOM_SMEM + depends on QCOM_SYSMON || QCOM_SYSMON=n select QCOM_MDT_LOADER select QCOM_RPROC_COMMON select QCOM_SCM diff --git a/drivers/remoteproc/Makefile b/drivers/remoteproc/Makefile index 6e16450ce11f..02627ede8d4a 100644 --- a/drivers/remoteproc/Makefile +++ b/drivers/remoteproc/Makefile @@ -17,6 +17,7 @@ obj-$(CONFIG_KEYSTONE_REMOTEPROC) += keystone_remoteproc.o obj-$(CONFIG_QCOM_ADSP_PIL) += qcom_adsp_pil.o obj-$(CONFIG_QCOM_RPROC_COMMON) += qcom_common.o obj-$(CONFIG_QCOM_Q6V5_PIL) += qcom_q6v5_pil.o +obj-$(CONFIG_QCOM_SYSMON) += qcom_sysmon.o obj-$(CONFIG_QCOM_WCNSS_PIL) += qcom_wcnss_pil.o qcom_wcnss_pil-y += qcom_wcnss.o qcom_wcnss_pil-y += qcom_wcnss_iris.o diff --git a/drivers/remoteproc/imx_rproc.c b/drivers/remoteproc/imx_rproc.c index 633268e9d550..54c07fd3f204 100644 --- a/drivers/remoteproc/imx_rproc.c +++ b/drivers/remoteproc/imx_rproc.c @@ -333,14 +333,14 @@ static int imx_rproc_probe(struct platform_device *pdev) /* set some other name then imx */ rproc = rproc_alloc(dev, "imx-rproc", &imx_rproc_ops, NULL, sizeof(*priv)); - if (!rproc) { - ret = -ENOMEM; - goto err; - } + if (!rproc) + return -ENOMEM; dcfg = of_device_get_match_data(dev); - if (!dcfg) - return -EINVAL; + if (!dcfg) { + ret = -EINVAL; + goto err_put_rproc; + } priv = rproc->priv; priv->rproc = rproc; @@ -359,8 +359,8 @@ static int imx_rproc_probe(struct platform_device *pdev) priv->clk = devm_clk_get(dev, NULL); if (IS_ERR(priv->clk)) { dev_err(dev, "Failed to get clock\n"); - rproc_free(rproc); - return PTR_ERR(priv->clk); + ret = PTR_ERR(priv->clk); + goto err_put_rproc; } /* @@ -370,8 +370,7 @@ static int imx_rproc_probe(struct platform_device *pdev) ret = clk_prepare_enable(priv->clk); if (ret) { dev_err(&rproc->dev, "Failed to enable clock\n"); - rproc_free(rproc); - return ret; + goto err_put_rproc; } ret = rproc_add(rproc); @@ -380,13 +379,13 @@ static int imx_rproc_probe(struct platform_device *pdev) goto err_put_clk; } - return ret; + return 0; err_put_clk: clk_disable_unprepare(priv->clk); err_put_rproc: rproc_free(rproc); -err: + return ret; } diff --git a/drivers/remoteproc/qcom_adsp_pil.c b/drivers/remoteproc/qcom_adsp_pil.c index 373c167892d7..89a86ce07f99 100644 --- a/drivers/remoteproc/qcom_adsp_pil.c +++ b/drivers/remoteproc/qcom_adsp_pil.c @@ -38,7 +38,10 @@ struct adsp_data { const char *firmware_name; int pas_id; bool has_aggre2_clk; + const char *ssr_name; + const char *sysmon_name; + int ssctl_id; }; struct qcom_adsp { @@ -75,6 +78,7 @@ struct qcom_adsp { struct qcom_rproc_glink glink_subdev; struct qcom_rproc_subdev smd_subdev; struct qcom_rproc_ssr ssr_subdev; + struct qcom_sysmon *sysmon; }; static int adsp_load(struct rproc *rproc, const struct firmware *fw) @@ -82,7 +86,9 @@ static int adsp_load(struct rproc *rproc, const struct firmware *fw) struct qcom_adsp *adsp = (struct qcom_adsp *)rproc->priv; return qcom_mdt_load(adsp->dev, fw, rproc->firmware, adsp->pas_id, - adsp->mem_region, adsp->mem_phys, adsp->mem_size); + adsp->mem_region, adsp->mem_phys, adsp->mem_size, + &adsp->mem_reloc); + } static int adsp_start(struct rproc *rproc) @@ -177,6 +183,7 @@ static const struct rproc_ops adsp_ops = { .start = adsp_start, .stop = adsp_stop, .da_to_va = adsp_da_to_va, + .parse_fw = qcom_register_dump_segments, .load = adsp_load, }; @@ -201,9 +208,6 @@ static irqreturn_t adsp_fatal_interrupt(int irq, void *dev) rproc_report_crash(adsp->rproc, RPROC_FATAL_ERROR); - if (!IS_ERR(msg)) - msg[0] = '\0'; - return IRQ_HANDLED; } @@ -398,6 +402,9 @@ static int adsp_probe(struct platform_device *pdev) qcom_add_glink_subdev(rproc, &adsp->glink_subdev); qcom_add_smd_subdev(rproc, &adsp->smd_subdev); qcom_add_ssr_subdev(rproc, &adsp->ssr_subdev, desc->ssr_name); + adsp->sysmon = qcom_add_sysmon_subdev(rproc, + desc->sysmon_name, + desc->ssctl_id); ret = rproc_add(rproc); if (ret) @@ -419,6 +426,7 @@ static int adsp_remove(struct platform_device *pdev) rproc_del(adsp->rproc); qcom_remove_glink_subdev(adsp->rproc, &adsp->glink_subdev); + qcom_remove_sysmon_subdev(adsp->sysmon); qcom_remove_smd_subdev(adsp->rproc, &adsp->smd_subdev); qcom_remove_ssr_subdev(adsp->rproc, &adsp->ssr_subdev); rproc_free(adsp->rproc); @@ -432,6 +440,8 @@ static const struct adsp_data adsp_resource_init = { .pas_id = 1, .has_aggre2_clk = false, .ssr_name = "lpass", + .sysmon_name = "adsp", + .ssctl_id = 0x14, }; static const struct adsp_data slpi_resource_init = { @@ -440,6 +450,8 @@ static const struct adsp_data slpi_resource_init = { .pas_id = 12, .has_aggre2_clk = true, .ssr_name = "dsps", + .sysmon_name = "slpi", + .ssctl_id = 0x16, }; static const struct of_device_id adsp_of_match[] = { diff --git a/drivers/remoteproc/qcom_common.c b/drivers/remoteproc/qcom_common.c index 00602499713f..acfc99f82fb8 100644 --- a/drivers/remoteproc/qcom_common.c +++ b/drivers/remoteproc/qcom_common.c @@ -22,6 +22,7 @@ #include <linux/remoteproc.h> #include <linux/rpmsg/qcom_glink.h> #include <linux/rpmsg/qcom_smd.h> +#include <linux/soc/qcom/mdt_loader.h> #include "remoteproc_internal.h" #include "qcom_common.h" @@ -41,7 +42,7 @@ static int glink_subdev_probe(struct rproc_subdev *subdev) return PTR_ERR_OR_ZERO(glink->edge); } -static void glink_subdev_remove(struct rproc_subdev *subdev) +static void glink_subdev_remove(struct rproc_subdev *subdev, bool crashed) { struct qcom_rproc_glink *glink = to_glink_subdev(subdev); @@ -74,11 +75,57 @@ EXPORT_SYMBOL_GPL(qcom_add_glink_subdev); */ void qcom_remove_glink_subdev(struct rproc *rproc, struct qcom_rproc_glink *glink) { + if (!glink->node) + return; + rproc_remove_subdev(rproc, &glink->subdev); of_node_put(glink->node); } EXPORT_SYMBOL_GPL(qcom_remove_glink_subdev); +/** + * qcom_register_dump_segments() - register segments for coredump + * @rproc: remoteproc handle + * @fw: firmware header + * + * Register all segments of the ELF in the remoteproc coredump segment list + * + * Return: 0 on success, negative errno on failure. + */ +int qcom_register_dump_segments(struct rproc *rproc, + const struct firmware *fw) +{ + const struct elf32_phdr *phdrs; + const struct elf32_phdr *phdr; + const struct elf32_hdr *ehdr; + int ret; + int i; + + ehdr = (struct elf32_hdr *)fw->data; + phdrs = (struct elf32_phdr *)(ehdr + 1); + + for (i = 0; i < ehdr->e_phnum; i++) { + 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; + + ret = rproc_coredump_add_segment(rproc, phdr->p_paddr, + phdr->p_memsz); + if (ret) + return ret; + } + + return 0; +} +EXPORT_SYMBOL_GPL(qcom_register_dump_segments); + static int smd_subdev_probe(struct rproc_subdev *subdev) { struct qcom_rproc_subdev *smd = to_smd_subdev(subdev); @@ -88,7 +135,7 @@ static int smd_subdev_probe(struct rproc_subdev *subdev) return PTR_ERR_OR_ZERO(smd->edge); } -static void smd_subdev_remove(struct rproc_subdev *subdev) +static void smd_subdev_remove(struct rproc_subdev *subdev, bool crashed) { struct qcom_rproc_subdev *smd = to_smd_subdev(subdev); @@ -121,6 +168,9 @@ EXPORT_SYMBOL_GPL(qcom_add_smd_subdev); */ void qcom_remove_smd_subdev(struct rproc *rproc, struct qcom_rproc_subdev *smd) { + if (!smd->node) + return; + rproc_remove_subdev(rproc, &smd->subdev); of_node_put(smd->node); } @@ -157,7 +207,7 @@ static int ssr_notify_start(struct rproc_subdev *subdev) return 0; } -static void ssr_notify_stop(struct rproc_subdev *subdev) +static void ssr_notify_stop(struct rproc_subdev *subdev, bool crashed) { struct qcom_rproc_ssr *ssr = to_ssr_subdev(subdev); diff --git a/drivers/remoteproc/qcom_common.h b/drivers/remoteproc/qcom_common.h index 728be9834d8b..58de71e4781c 100644 --- a/drivers/remoteproc/qcom_common.h +++ b/drivers/remoteproc/qcom_common.h @@ -4,6 +4,9 @@ #include <linux/remoteproc.h> #include "remoteproc_internal.h" +#include <linux/soc/qcom/qmi.h> + +struct qcom_sysmon; struct qcom_rproc_glink { struct rproc_subdev subdev; @@ -30,6 +33,8 @@ struct qcom_rproc_ssr { void qcom_add_glink_subdev(struct rproc *rproc, struct qcom_rproc_glink *glink); void qcom_remove_glink_subdev(struct rproc *rproc, struct qcom_rproc_glink *glink); +int qcom_register_dump_segments(struct rproc *rproc, const struct firmware *fw); + void qcom_add_smd_subdev(struct rproc *rproc, struct qcom_rproc_subdev *smd); void qcom_remove_smd_subdev(struct rproc *rproc, struct qcom_rproc_subdev *smd); @@ -37,4 +42,22 @@ void qcom_add_ssr_subdev(struct rproc *rproc, struct qcom_rproc_ssr *ssr, const char *ssr_name); void qcom_remove_ssr_subdev(struct rproc *rproc, struct qcom_rproc_ssr *ssr); +#if IS_ENABLED(CONFIG_QCOM_SYSMON) +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); +#else +static inline struct qcom_sysmon *qcom_add_sysmon_subdev(struct rproc *rproc, + const char *name, + int ssctl_instance) +{ + return NULL; +} + +static inline void qcom_remove_sysmon_subdev(struct qcom_sysmon *sysmon) +{ +} +#endif + #endif diff --git a/drivers/remoteproc/qcom_q6v5_pil.c b/drivers/remoteproc/qcom_q6v5_pil.c index b4e5e725848d..8e70a627e0bb 100644 --- a/drivers/remoteproc/qcom_q6v5_pil.c +++ b/drivers/remoteproc/qcom_q6v5_pil.c @@ -168,6 +168,7 @@ struct q6v5 { 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; @@ -939,9 +940,6 @@ static irqreturn_t q6v5_wdog_interrupt(int irq, void *dev) rproc_report_crash(qproc->rproc, RPROC_WATCHDOG); - if (!IS_ERR(msg)) - msg[0] = '\0'; - return IRQ_HANDLED; } @@ -959,9 +957,6 @@ static irqreturn_t q6v5_fatal_interrupt(int irq, void *dev) rproc_report_crash(qproc->rproc, RPROC_FATAL_ERROR); - if (!IS_ERR(msg)) - msg[0] = '\0'; - return IRQ_HANDLED; } @@ -1215,6 +1210,7 @@ static int q6v5_probe(struct platform_device *pdev) 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) @@ -1234,6 +1230,7 @@ static int q6v5_remove(struct platform_device *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); diff --git a/drivers/remoteproc/qcom_sysmon.c b/drivers/remoteproc/qcom_sysmon.c new file mode 100644 index 000000000000..f085545d7da5 --- /dev/null +++ b/drivers/remoteproc/qcom_sysmon.c @@ -0,0 +1,579 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2017, Linaro Ltd. + */ +#include <linux/firmware.h> +#include <linux/module.h> +#include <linux/notifier.h> +#include <linux/slab.h> +#include <linux/io.h> +#include <linux/notifier.h> +#include <linux/of_platform.h> +#include <linux/platform_device.h> +#include <linux/remoteproc/qcom_rproc.h> +#include <linux/rpmsg.h> + +#include "qcom_common.h" + +static BLOCKING_NOTIFIER_HEAD(sysmon_notifiers); + +struct qcom_sysmon { + struct rproc_subdev subdev; + struct rproc *rproc; + + struct list_head node; + + const char *name; + + int ssctl_version; + int ssctl_instance; + + struct notifier_block nb; + + struct device *dev; + + struct rpmsg_endpoint *ept; + struct completion comp; + struct mutex lock; + + bool ssr_ack; + + struct qmi_handle qmi; + struct sockaddr_qrtr ssctl; +}; + +static DEFINE_MUTEX(sysmon_lock); +static LIST_HEAD(sysmon_list); + +/** + * sysmon_send_event() - send notification of other remote's SSR event + * @sysmon: sysmon context + * @name: other remote's name + */ +static void sysmon_send_event(struct qcom_sysmon *sysmon, const char *name) +{ + char req[50]; + int len; + int ret; + + len = snprintf(req, sizeof(req), "ssr:%s:before_shutdown", name); + if (len >= sizeof(req)) + return; + + mutex_lock(&sysmon->lock); + reinit_completion(&sysmon->comp); + sysmon->ssr_ack = false; + + ret = rpmsg_send(sysmon->ept, req, len); + if (ret < 0) { + dev_err(sysmon->dev, "failed to send sysmon event\n"); + goto out_unlock; + } + + ret = wait_for_completion_timeout(&sysmon->comp, + msecs_to_jiffies(5000)); + if (!ret) { + dev_err(sysmon->dev, "timeout waiting for sysmon ack\n"); + goto out_unlock; + } + + if (!sysmon->ssr_ack) + dev_err(sysmon->dev, "unexpected response to sysmon event\n"); + +out_unlock: + mutex_unlock(&sysmon->lock); +} + +/** + * sysmon_request_shutdown() - request graceful shutdown of remote + * @sysmon: sysmon context + */ +static void sysmon_request_shutdown(struct qcom_sysmon *sysmon) +{ + char *req = "ssr:shutdown"; + int ret; + + mutex_lock(&sysmon->lock); + reinit_completion(&sysmon->comp); + sysmon->ssr_ack = false; + + ret = rpmsg_send(sysmon->ept, req, strlen(req) + 1); + if (ret < 0) { + dev_err(sysmon->dev, "send sysmon shutdown request failed\n"); + goto out_unlock; + } + + ret = wait_for_completion_timeout(&sysmon->comp, + msecs_to_jiffies(5000)); + if (!ret) { + dev_err(sysmon->dev, "timeout waiting for sysmon ack\n"); + goto out_unlock; + } + + if (!sysmon->ssr_ack) + dev_err(sysmon->dev, + "unexpected response to sysmon shutdown request\n"); + +out_unlock: + mutex_unlock(&sysmon->lock); +} + +static int sysmon_callback(struct rpmsg_device *rpdev, void *data, int count, + void *priv, u32 addr) +{ + struct qcom_sysmon *sysmon = priv; + const char *ssr_ack = "ssr:ack"; + const int ssr_ack_len = strlen(ssr_ack) + 1; + + if (!sysmon) + return -EINVAL; + + if (count >= ssr_ack_len && !memcmp(data, ssr_ack, ssr_ack_len)) + sysmon->ssr_ack = true; + + complete(&sysmon->comp); + + return 0; +} + +#define SSCTL_SHUTDOWN_REQ 0x21 +#define SSCTL_SUBSYS_EVENT_REQ 0x23 + +#define SSCTL_MAX_MSG_LEN 7 + +#define SSCTL_SUBSYS_NAME_LENGTH 15 + +enum { + SSCTL_SSR_EVENT_BEFORE_POWERUP, + SSCTL_SSR_EVENT_AFTER_POWERUP, + SSCTL_SSR_EVENT_BEFORE_SHUTDOWN, + SSCTL_SSR_EVENT_AFTER_SHUTDOWN, +}; + +enum { + SSCTL_SSR_EVENT_FORCED, + SSCTL_SSR_EVENT_GRACEFUL, +}; + +struct ssctl_shutdown_resp { + struct qmi_response_type_v01 resp; +}; + +static struct qmi_elem_info ssctl_shutdown_resp_ei[] = { + { + .data_type = QMI_STRUCT, + .elem_len = 1, + .elem_size = sizeof(struct qmi_response_type_v01), + .array_type = NO_ARRAY, + .tlv_type = 0x02, + .offset = offsetof(struct ssctl_shutdown_resp, resp), + .ei_array = qmi_response_type_v01_ei, + }, + {} +}; + +struct ssctl_subsys_event_req { + u8 subsys_name_len; + char subsys_name[SSCTL_SUBSYS_NAME_LENGTH]; + u32 event; + u8 evt_driven_valid; + u32 evt_driven; +}; + +static struct qmi_elem_info ssctl_subsys_event_req_ei[] = { + { + .data_type = QMI_DATA_LEN, + .elem_len = 1, + .elem_size = sizeof(uint8_t), + .array_type = NO_ARRAY, + .tlv_type = 0x01, + .offset = offsetof(struct ssctl_subsys_event_req, + subsys_name_len), + .ei_array = NULL, + }, + { + .data_type = QMI_UNSIGNED_1_BYTE, + .elem_len = SSCTL_SUBSYS_NAME_LENGTH, + .elem_size = sizeof(char), + .array_type = VAR_LEN_ARRAY, + .tlv_type = 0x01, + .offset = offsetof(struct ssctl_subsys_event_req, + subsys_name), + .ei_array = NULL, + }, + { + .data_type = QMI_SIGNED_4_BYTE_ENUM, + .elem_len = 1, + .elem_size = sizeof(uint32_t), + .array_type = NO_ARRAY, + .tlv_type = 0x02, + .offset = offsetof(struct ssctl_subsys_event_req, + event), + .ei_array = NULL, + }, + { + .data_type = QMI_OPT_FLAG, + .elem_len = 1, + .elem_size = sizeof(uint8_t), + .array_type = NO_ARRAY, + .tlv_type = 0x10, + .offset = offsetof(struct ssctl_subsys_event_req, + evt_driven_valid), + .ei_array = NULL, + }, + { + .data_type = QMI_SIGNED_4_BYTE_ENUM, + .elem_len = 1, + .elem_size = sizeof(uint32_t), + .array_type = NO_ARRAY, + .tlv_type = 0x10, + .offset = offsetof(struct ssctl_subsys_event_req, + evt_driven), + .ei_array = NULL, + }, + {} +}; + +struct ssctl_subsys_event_resp { + struct qmi_response_type_v01 resp; +}; + +static struct qmi_elem_info ssctl_subsys_event_resp_ei[] = { + { + .data_type = QMI_STRUCT, + .elem_len = 1, + .elem_size = sizeof(struct qmi_response_type_v01), + .array_type = NO_ARRAY, + .tlv_type = 0x02, + .offset = offsetof(struct ssctl_subsys_event_resp, + resp), + .ei_array = qmi_response_type_v01_ei, + }, + {} +}; + +/** + * ssctl_request_shutdown() - request shutdown via SSCTL QMI service + * @sysmon: sysmon context + */ +static void ssctl_request_shutdown(struct qcom_sysmon *sysmon) +{ + struct ssctl_shutdown_resp resp; + struct qmi_txn txn; + int ret; + + 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; + } + + ret = qmi_send_request(&sysmon->qmi, &sysmon->ssctl, &txn, + SSCTL_SHUTDOWN_REQ, 0, NULL, NULL); + if (ret < 0) { + dev_err(sysmon->dev, "failed to send shutdown request\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"); + else if (resp.resp.result) + dev_err(sysmon->dev, "shutdown request failed\n"); + else + dev_dbg(sysmon->dev, "shutdown request completed\n"); +} + +/** + * ssctl_send_event() - send notification of other remote's SSR event + * @sysmon: sysmon context + * @name: other remote's name + */ +static void ssctl_send_event(struct qcom_sysmon *sysmon, const char *name) +{ + struct ssctl_subsys_event_resp resp; + struct ssctl_subsys_event_req req; + struct qmi_txn txn; + int ret; + + memset(&resp, 0, sizeof(resp)); + ret = qmi_txn_init(&sysmon->qmi, &txn, ssctl_subsys_event_resp_ei, &resp); + if (ret < 0) { + dev_err(sysmon->dev, "failed to allocate QMI txn\n"); + return; + } + + memset(&req, 0, sizeof(req)); + strlcpy(req.subsys_name, name, sizeof(req.subsys_name)); + req.subsys_name_len = strlen(req.subsys_name); + req.event = SSCTL_SSR_EVENT_BEFORE_SHUTDOWN; + req.evt_driven_valid = true; + req.evt_driven = SSCTL_SSR_EVENT_FORCED; + + ret = qmi_send_request(&sysmon->qmi, &sysmon->ssctl, &txn, + SSCTL_SUBSYS_EVENT_REQ, 40, + ssctl_subsys_event_req_ei, &req); + if (ret < 0) { + dev_err(sysmon->dev, "failed to send shutdown request\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"); + else if (resp.resp.result) + dev_err(sysmon->dev, "ssr event send failed\n"); + else + dev_dbg(sysmon->dev, "ssr event send completed\n"); +} + +/** + * ssctl_new_server() - QMI callback indicating a new service + * @qmi: QMI handle + * @svc: service information + * + * Return: 0 if we're interested in this service, -EINVAL otherwise. + */ +static int ssctl_new_server(struct qmi_handle *qmi, struct qmi_service *svc) +{ + struct qcom_sysmon *sysmon = container_of(qmi, struct qcom_sysmon, qmi); + + switch (svc->version) { + case 1: + if (svc->instance != 0) + return -EINVAL; + if (strcmp(sysmon->name, "modem")) + return -EINVAL; + break; + case 2: + if (svc->instance != sysmon->ssctl_instance) + return -EINVAL; + break; + default: + return -EINVAL; + }; + + sysmon->ssctl_version = svc->version; + + sysmon->ssctl.sq_family = AF_QIPCRTR; + sysmon->ssctl.sq_node = svc->node; + sysmon->ssctl.sq_port = svc->port; + + svc->priv = sysmon; + + return 0; +} + +/** + * ssctl_del_server() - QMI callback indicating that @svc is removed + * @qmi: QMI handle + * @svc: service information + */ +static void ssctl_del_server(struct qmi_handle *qmi, struct qmi_service *svc) +{ + struct qcom_sysmon *sysmon = svc->priv; + + sysmon->ssctl_version = 0; +} + +static const struct qmi_ops ssctl_ops = { + .new_server = ssctl_new_server, + .del_server = ssctl_del_server, +}; + +static int sysmon_start(struct rproc_subdev *subdev) +{ + return 0; +} + +static void sysmon_stop(struct rproc_subdev *subdev, bool crashed) +{ + struct qcom_sysmon *sysmon = container_of(subdev, struct qcom_sysmon, subdev); + + blocking_notifier_call_chain(&sysmon_notifiers, 0, (void *)sysmon->name); + + /* Don't request graceful shutdown if we've crashed */ + if (crashed) + return; + + if (sysmon->ssctl_version) + ssctl_request_shutdown(sysmon); + else if (sysmon->ept) + sysmon_request_shutdown(sysmon); +} + +/** + * sysmon_notify() - notify sysmon target of another's SSR + * @nb: notifier_block associated with sysmon instance + * @event: unused + * @data: SSR identifier of the remote that is going down + */ +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; + const char *ssr_name = data; + + /* Skip non-running rprocs and the originating instance */ + if (rproc->state != RPROC_RUNNING || !strcmp(data, sysmon->name)) { + dev_dbg(sysmon->dev, "not notifying %s\n", sysmon->name); + return NOTIFY_DONE; + } + + /* Only SSCTL version 2 supports SSR events */ + if (sysmon->ssctl_version == 2) + ssctl_send_event(sysmon, ssr_name); + else if (sysmon->ept) + sysmon_send_event(sysmon, ssr_name); + + return NOTIFY_DONE; +} + +/** + * qcom_add_sysmon_subdev() - create a sysmon subdev for the given remoteproc + * @rproc: rproc context to associate the subdev with + * @name: name of this subdev, to use in SSR + * @ssctl_instance: instance id of the ssctl QMI service + * + * Return: A new qcom_sysmon object, or NULL on failure + */ +struct qcom_sysmon *qcom_add_sysmon_subdev(struct rproc *rproc, + const char *name, + int ssctl_instance) +{ + struct qcom_sysmon *sysmon; + int ret; + + sysmon = kzalloc(sizeof(*sysmon), GFP_KERNEL); + if (!sysmon) + return NULL; + + sysmon->dev = rproc->dev.parent; + sysmon->rproc = rproc; + + sysmon->name = name; + sysmon->ssctl_instance = ssctl_instance; + + init_completion(&sysmon->comp); + mutex_init(&sysmon->lock); + + ret = qmi_handle_init(&sysmon->qmi, SSCTL_MAX_MSG_LEN, &ssctl_ops, NULL); + if (ret < 0) { + dev_err(sysmon->dev, "failed to initialize qmi handle\n"); + kfree(sysmon); + return NULL; + } + + qmi_add_lookup(&sysmon->qmi, 43, 0, 0); + + rproc_add_subdev(rproc, &sysmon->subdev, sysmon_start, sysmon_stop); + + sysmon->nb.notifier_call = sysmon_notify; + blocking_notifier_chain_register(&sysmon_notifiers, &sysmon->nb); + + mutex_lock(&sysmon_lock); + list_add(&sysmon->node, &sysmon_list); + mutex_unlock(&sysmon_lock); + + return sysmon; +} +EXPORT_SYMBOL_GPL(qcom_add_sysmon_subdev); + +/** + * qcom_remove_sysmon_subdev() - release a qcom_sysmon + * @sysmon: sysmon context, as retrieved by qcom_add_sysmon_subdev() + */ +void qcom_remove_sysmon_subdev(struct qcom_sysmon *sysmon) +{ + if (!sysmon) + return; + + mutex_lock(&sysmon_lock); + list_del(&sysmon->node); + mutex_unlock(&sysmon_lock); + + blocking_notifier_chain_unregister(&sysmon_notifiers, &sysmon->nb); + + rproc_remove_subdev(sysmon->rproc, &sysmon->subdev); + + qmi_handle_release(&sysmon->qmi); + + kfree(sysmon); +} +EXPORT_SYMBOL_GPL(qcom_remove_sysmon_subdev); + +/** + * sysmon_probe() - probe sys_mon channel + * @rpdev: rpmsg device handle + * + * Find the sysmon context associated with the ancestor remoteproc and assign + * this rpmsg device with said sysmon context. + * + * Return: 0 on success, negative errno on failure. + */ +static int sysmon_probe(struct rpmsg_device *rpdev) +{ + struct qcom_sysmon *sysmon; + struct rproc *rproc; + + rproc = rproc_get_by_child(&rpdev->dev); + if (!rproc) { + dev_err(&rpdev->dev, "sysmon device not child of rproc\n"); + return -EINVAL; + } + + mutex_lock(&sysmon_lock); + list_for_each_entry(sysmon, &sysmon_list, node) { + if (sysmon->rproc == rproc) + goto found; + } + mutex_unlock(&sysmon_lock); + + dev_err(&rpdev->dev, "no sysmon associated with parent rproc\n"); + + return -EINVAL; + +found: + mutex_unlock(&sysmon_lock); + + rpdev->ept->priv = sysmon; + sysmon->ept = rpdev->ept; + + return 0; +} + +/** + * sysmon_remove() - sys_mon channel remove handler + * @rpdev: rpmsg device handle + * + * Disassociate the rpmsg device with the sysmon instance. + */ +static void sysmon_remove(struct rpmsg_device *rpdev) |