diff options
Diffstat (limited to 'drivers/soc/qcom')
-rw-r--r-- | drivers/soc/qcom/cmd-db.c | 32 | ||||
-rw-r--r-- | drivers/soc/qcom/pmic_glink.c | 26 | ||||
-rw-r--r-- | drivers/soc/qcom/rpmh-rsc.c | 3 |
3 files changed, 53 insertions, 8 deletions
diff --git a/drivers/soc/qcom/cmd-db.c b/drivers/soc/qcom/cmd-db.c index a5fd68411b..86fb2cd4f4 100644 --- a/drivers/soc/qcom/cmd-db.c +++ b/drivers/soc/qcom/cmd-db.c @@ -1,6 +1,10 @@ /* SPDX-License-Identifier: GPL-2.0 */ -/* Copyright (c) 2016-2018, 2020, The Linux Foundation. All rights reserved. */ +/* + * Copyright (c) 2016-2018, 2020, The Linux Foundation. All rights reserved. + * Copyright (c) 2024, Qualcomm Innovation Center, Inc. All rights reserved. + */ +#include <linux/bitfield.h> #include <linux/debugfs.h> #include <linux/kernel.h> #include <linux/module.h> @@ -17,6 +21,8 @@ #define MAX_SLV_ID 8 #define SLAVE_ID_MASK 0x7 #define SLAVE_ID_SHIFT 16 +#define SLAVE_ID(addr) FIELD_GET(GENMASK(19, 16), addr) +#define VRM_ADDR(addr) FIELD_GET(GENMASK(19, 4), addr) /** * struct entry_header: header for each entry in cmddb @@ -221,6 +227,30 @@ const void *cmd_db_read_aux_data(const char *id, size_t *len) EXPORT_SYMBOL_GPL(cmd_db_read_aux_data); /** + * cmd_db_match_resource_addr() - Compare if both Resource addresses are same + * + * @addr1: Resource address to compare + * @addr2: Resource address to compare + * + * Return: true if two addresses refer to the same resource, false otherwise + */ +bool cmd_db_match_resource_addr(u32 addr1, u32 addr2) +{ + /* + * Each RPMh VRM accelerator resource has 3 or 4 contiguous 4-byte + * aligned addresses associated with it. Ignore the offset to check + * for VRM requests. + */ + if (addr1 == addr2) + return true; + else if (SLAVE_ID(addr1) == CMD_DB_HW_VRM && VRM_ADDR(addr1) == VRM_ADDR(addr2)) + return true; + + return false; +} +EXPORT_SYMBOL_GPL(cmd_db_match_resource_addr); + +/** * cmd_db_read_slave_id - Get the slave ID for a given resource address * * @id: Resource id to query the DB for version diff --git a/drivers/soc/qcom/pmic_glink.c b/drivers/soc/qcom/pmic_glink.c index f913e9bd57..823fd108fa 100644 --- a/drivers/soc/qcom/pmic_glink.c +++ b/drivers/soc/qcom/pmic_glink.c @@ -11,6 +11,7 @@ #include <linux/slab.h> #include <linux/soc/qcom/pdr.h> #include <linux/soc/qcom/pmic_glink.h> +#include <linux/spinlock.h> enum { PMIC_GLINK_CLIENT_BATT = 0, @@ -36,7 +37,7 @@ struct pmic_glink { unsigned int pdr_state; /* serializing clients list updates */ - struct mutex client_lock; + spinlock_t client_lock; struct list_head clients; }; @@ -58,10 +59,11 @@ static void _devm_pmic_glink_release_client(struct device *dev, void *res) { struct pmic_glink_client *client = (struct pmic_glink_client *)res; struct pmic_glink *pg = client->pg; + unsigned long flags; - mutex_lock(&pg->client_lock); + spin_lock_irqsave(&pg->client_lock, flags); list_del(&client->node); - mutex_unlock(&pg->client_lock); + spin_unlock_irqrestore(&pg->client_lock, flags); } struct pmic_glink_client *devm_pmic_glink_register_client(struct device *dev, @@ -72,6 +74,7 @@ struct pmic_glink_client *devm_pmic_glink_register_client(struct device *dev, { struct pmic_glink_client *client; struct pmic_glink *pg = dev_get_drvdata(dev->parent); + unsigned long flags; client = devres_alloc(_devm_pmic_glink_release_client, sizeof(*client), GFP_KERNEL); if (!client) @@ -83,9 +86,14 @@ struct pmic_glink_client *devm_pmic_glink_register_client(struct device *dev, client->pdr_notify = pdr; client->priv = priv; - mutex_lock(&pg->client_lock); + mutex_lock(&pg->state_lock); + spin_lock_irqsave(&pg->client_lock, flags); + list_add(&client->node, &pg->clients); - mutex_unlock(&pg->client_lock); + client->pdr_notify(client->priv, pg->client_state); + + spin_unlock_irqrestore(&pg->client_lock, flags); + mutex_unlock(&pg->state_lock); devres_add(dev, client); @@ -107,6 +115,7 @@ static int pmic_glink_rpmsg_callback(struct rpmsg_device *rpdev, void *data, struct pmic_glink_client *client; struct pmic_glink_hdr *hdr; struct pmic_glink *pg = dev_get_drvdata(&rpdev->dev); + unsigned long flags; if (len < sizeof(*hdr)) { dev_warn(pg->dev, "ignoring truncated message\n"); @@ -115,10 +124,12 @@ static int pmic_glink_rpmsg_callback(struct rpmsg_device *rpdev, void *data, hdr = data; + spin_lock_irqsave(&pg->client_lock, flags); list_for_each_entry(client, &pg->clients, node) { if (client->id == le32_to_cpu(hdr->owner)) client->cb(data, len, client->priv); } + spin_unlock_irqrestore(&pg->client_lock, flags); return 0; } @@ -158,6 +169,7 @@ static void pmic_glink_state_notify_clients(struct pmic_glink *pg) { struct pmic_glink_client *client; unsigned int new_state = pg->client_state; + unsigned long flags; if (pg->client_state != SERVREG_SERVICE_STATE_UP) { if (pg->pdr_state == SERVREG_SERVICE_STATE_UP && pg->ept) @@ -168,8 +180,10 @@ static void pmic_glink_state_notify_clients(struct pmic_glink *pg) } if (new_state != pg->client_state) { + spin_lock_irqsave(&pg->client_lock, flags); list_for_each_entry(client, &pg->clients, node) client->pdr_notify(client->priv, new_state); + spin_unlock_irqrestore(&pg->client_lock, flags); pg->client_state = new_state; } } @@ -256,7 +270,7 @@ static int pmic_glink_probe(struct platform_device *pdev) pg->dev = &pdev->dev; INIT_LIST_HEAD(&pg->clients); - mutex_init(&pg->client_lock); + spin_lock_init(&pg->client_lock); mutex_init(&pg->state_lock); match_data = (unsigned long *)of_device_get_match_data(&pdev->dev); diff --git a/drivers/soc/qcom/rpmh-rsc.c b/drivers/soc/qcom/rpmh-rsc.c index a021dc7180..daf64be966 100644 --- a/drivers/soc/qcom/rpmh-rsc.c +++ b/drivers/soc/qcom/rpmh-rsc.c @@ -1,6 +1,7 @@ // SPDX-License-Identifier: GPL-2.0 /* * Copyright (c) 2016-2018, The Linux Foundation. All rights reserved. + * Copyright (c) 2023-2024, Qualcomm Innovation Center, Inc. All rights reserved. */ #define pr_fmt(fmt) "%s " fmt, KBUILD_MODNAME @@ -557,7 +558,7 @@ static int check_for_req_inflight(struct rsc_drv *drv, struct tcs_group *tcs, for_each_set_bit(j, &curr_enabled, MAX_CMDS_PER_TCS) { addr = read_tcs_cmd(drv, drv->regs[RSC_DRV_CMD_ADDR], i, j); for (k = 0; k < msg->num_cmds; k++) { - if (addr == msg->cmds[k].addr) + if (cmd_db_match_resource_addr(msg->cmds[k].addr, addr)) return -EBUSY; } } |