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More Qualcomm driver updates for 5.13 

This improves the Qualcomm SCM driver logic related to detecting the
 calling convention, in particular on SC7180, and fixes a few small
 issues in the same.
 
 It introduces additonal sanity checks of the size of loaded segments in
 the MDT loader and adds a missing error in the return path of
 pdr_register_listener().
 
 It makes it possible to specify the OEM specific firmware path in the
 wcn36xx control (and WiFi) driver.
 
 Lastly it adds a missing path specifier in the MAINTAINERS' entry and
 fixes a bunch of kerneldoc issues in various drivers.
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Merge tag 'qcom-drivers-for-5.13-2' of git://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux into arm/drivers

More Qualcomm driver updates for 5.13

This improves the Qualcomm SCM driver logic related to detecting the
calling convention, in particular on SC7180, and fixes a few small
issues in the same.

It introduces additonal sanity checks of the size of loaded segments in
the MDT loader and adds a missing error in the return path of
pdr_register_listener().

It makes it possible to specify the OEM specific firmware path in the
wcn36xx control (and WiFi) driver.

Lastly it adds a missing path specifier in the MAINTAINERS' entry and
fixes a bunch of kerneldoc issues in various drivers.

* tag 'qcom-drivers-for-5.13-2' of git://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux:
  soc: qcom: mdt_loader: Detect truncated read of segments
  soc: qcom: mdt_loader: Validate that p_filesz < p_memsz
  soc: qcom: pdr: Fix error return code in pdr_register_listener
  firmware: qcom_scm: Fix kernel-doc function names to match
  firmware: qcom_scm: Suppress sysfs bind attributes
  firmware: qcom_scm: Workaround lack of "is available" call on SC7180
  firmware: qcom_scm: Reduce locking section for __get_convention()
  firmware: qcom_scm: Make __qcom_scm_is_call_available() return bool
  soc: qcom: wcnss_ctrl: Allow reading firmware-name from DT
  soc: qcom: wcnss_ctrl: Introduce local variable "dev"
  dt-bindings: soc: qcom: wcnss: Add firmware-name property
  soc: qcom: address kernel-doc warnings
  MAINTAINERS: add another entry for ARM/QUALCOMM SUPPORT

Link: https://lore.kernel.org/r/20210409162001.775851-1-bjorn.andersson@linaro.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Arnd Bergmann 2021-04-09 21:46:14 +02:00
Родитель 3684100805 0648c55e3a
Коммит 30be8446db
13 изменённых файлов: 106 добавлений и 60 удалений
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7
Documentation/devicetree/bindings/soc/qcom/qcom,wcnss.txt
Просмотреть файл

@ -24,6 +24,13 @@ block and a BT, WiFi and FM radio block, all using SMD as command channels.
"qcom,riva",
"qcom,pronto"
- firmware-name:
Usage: optional
Value type: <string>
Definition: specifies the relative firmware image path for the WLAN NV
blob. Defaults to "wlan/prima/WCNSS_qcom_wlan_nv.bin" if
not specified.
= SUBNODES
The subnodes of the wcnss node are optional and describe the individual blocks in
the WCNSS.

1
MAINTAINERS
Просмотреть файл

@ -2296,6 +2296,7 @@ F: drivers/tty/serial/msm_serial.c
F: drivers/usb/dwc3/dwc3-qcom.c
F: include/dt-bindings/*/qcom*
F: include/linux/*/qcom*
F: include/linux/soc/qcom/
ARM/RADISYS ENP2611 MACHINE SUPPORT
M: Lennert Buytenhek <kernel@wantstofly.org>

4
drivers/firmware/qcom_scm-legacy.c
Просмотреть файл

@ -118,7 +118,7 @@ static void __scm_legacy_do(const struct arm_smccc_args *smc,
}
/**
* qcom_scm_call() - Sends a command to the SCM and waits for the command to
* scm_legacy_call() - Sends a command to the SCM and waits for the command to
* finish processing.
*
* A note on cache maintenance:
@ -209,7 +209,7 @@ out:
(n & 0xf))
/**
* qcom_scm_call_atomic() - Send an atomic SCM command with up to 5 arguments
* scm_legacy_call_atomic() - Send an atomic SCM command with up to 5 arguments
* and 3 return values
* @desc: SCM call descriptor containing arguments
* @res: SCM call return values

12
drivers/firmware/qcom_scm-smc.c
Просмотреть файл

@ -77,8 +77,10 @@ static void __scm_smc_do(const struct arm_smccc_args *smc,
} while (res->a0 == QCOM_SCM_V2_EBUSY);
}
int scm_smc_call(struct device *dev, const struct qcom_scm_desc *desc,
struct qcom_scm_res *res, bool atomic)
int __scm_smc_call(struct device *dev, const struct qcom_scm_desc *desc,
enum qcom_scm_convention qcom_convention,
struct qcom_scm_res *res, bool atomic)
{
int arglen = desc->arginfo & 0xf;
int i;
@ -87,9 +89,8 @@ int scm_smc_call(struct device *dev, const struct qcom_scm_desc *desc,
size_t alloc_len;
gfp_t flag = atomic ? GFP_ATOMIC : GFP_KERNEL;
u32 smccc_call_type = atomic ? ARM_SMCCC_FAST_CALL : ARM_SMCCC_STD_CALL;
u32 qcom_smccc_convention =
(qcom_scm_convention == SMC_CONVENTION_ARM_32) ?
ARM_SMCCC_SMC_32 : ARM_SMCCC_SMC_64;
u32 qcom_smccc_convention = (qcom_convention == SMC_CONVENTION_ARM_32) ?
ARM_SMCCC_SMC_32 : ARM_SMCCC_SMC_64;
struct arm_smccc_res smc_res;
struct arm_smccc_args smc = {0};
@ -148,4 +149,5 @@ int scm_smc_call(struct device *dev, const struct qcom_scm_desc *desc,
}
return (long)smc_res.a0 ? qcom_scm_remap_error(smc_res.a0) : 0;
}

87
drivers/firmware/qcom_scm.c
Просмотреть файл

@ -113,14 +113,10 @@ static void qcom_scm_clk_disable(void)
clk_disable_unprepare(__scm->bus_clk);
}
static int __qcom_scm_is_call_available(struct device *dev, u32 svc_id,
u32 cmd_id);
enum qcom_scm_convention qcom_scm_convention = SMC_CONVENTION_UNKNOWN;
static DEFINE_SPINLOCK(scm_query_lock);
enum qcom_scm_convention qcom_scm_convention;
static bool has_queried __read_mostly;
static DEFINE_SPINLOCK(query_lock);
static void __query_convention(void)
static enum qcom_scm_convention __get_convention(void)
{
unsigned long flags;
struct qcom_scm_desc desc = {
@ -133,36 +129,50 @@ static void __query_convention(void)
.owner = ARM_SMCCC_OWNER_SIP,
};
struct qcom_scm_res res;
enum qcom_scm_convention probed_convention;
int ret;
bool forced = false;
spin_lock_irqsave(&query_lock, flags);
if (has_queried)
goto out;
if (likely(qcom_scm_convention != SMC_CONVENTION_UNKNOWN))
return qcom_scm_convention;
qcom_scm_convention = SMC_CONVENTION_ARM_64;
// Device isn't required as there is only one argument - no device
// needed to dma_map_single to secure world
ret = scm_smc_call(NULL, &desc, &res, true);
/*
* Device isn't required as there is only one argument - no device
* needed to dma_map_single to secure world
*/
probed_convention = SMC_CONVENTION_ARM_64;
ret = __scm_smc_call(NULL, &desc, probed_convention, &res, true);
if (!ret && res.result[0] == 1)
goto out;
goto found;
qcom_scm_convention = SMC_CONVENTION_ARM_32;
ret = scm_smc_call(NULL, &desc, &res, true);
/*
* Some SC7180 firmwares didn't implement the
* QCOM_SCM_INFO_IS_CALL_AVAIL call, so we fallback to forcing ARM_64
* calling conventions on these firmwares. Luckily we don't make any
* early calls into the firmware on these SoCs so the device pointer
* will be valid here to check if the compatible matches.
*/
if (of_device_is_compatible(__scm ? __scm->dev->of_node : NULL, "qcom,scm-sc7180")) {
forced = true;
goto found;
}
probed_convention = SMC_CONVENTION_ARM_32;
ret = __scm_smc_call(NULL, &desc, probed_convention, &res, true);
if (!ret && res.result[0] == 1)
goto out;
goto found;
qcom_scm_convention = SMC_CONVENTION_LEGACY;
out:
has_queried = true;
spin_unlock_irqrestore(&query_lock, flags);
pr_info("qcom_scm: convention: %s\n",
qcom_scm_convention_names[qcom_scm_convention]);
}
probed_convention = SMC_CONVENTION_LEGACY;
found:
spin_lock_irqsave(&scm_query_lock, flags);
if (probed_convention != qcom_scm_convention) {
qcom_scm_convention = probed_convention;
pr_info("qcom_scm: convention: %s%s\n",
qcom_scm_convention_names[qcom_scm_convention],
forced ? " (forced)" : "");
}
spin_unlock_irqrestore(&scm_query_lock, flags);
static inline enum qcom_scm_convention __get_convention(void)
{
if (unlikely(!has_queried))
__query_convention();
return qcom_scm_convention;
}
@ -219,8 +229,8 @@ static int qcom_scm_call_atomic(struct device *dev,
}
}
static int __qcom_scm_is_call_available(struct device *dev, u32 svc_id,
u32 cmd_id)
static bool __qcom_scm_is_call_available(struct device *dev, u32 svc_id,
u32 cmd_id)
{
int ret;
struct qcom_scm_desc desc = {
@ -247,7 +257,7 @@ static int __qcom_scm_is_call_available(struct device *dev, u32 svc_id,
ret = qcom_scm_call(dev, &desc, &res);
return ret ? : res.result[0];
return ret ? false : !!res.result[0];
}
/**
@ -585,9 +595,8 @@ bool qcom_scm_pas_supported(u32 peripheral)
};
struct qcom_scm_res res;
ret = __qcom_scm_is_call_available(__scm->dev, QCOM_SCM_SVC_PIL,
QCOM_SCM_PIL_PAS_IS_SUPPORTED);
if (ret <= 0)
if (!__qcom_scm_is_call_available(__scm->dev, QCOM_SCM_SVC_PIL,
QCOM_SCM_PIL_PAS_IS_SUPPORTED))
return false;
ret = qcom_scm_call(__scm->dev, &desc, &res);
@ -1060,17 +1069,18 @@ EXPORT_SYMBOL(qcom_scm_ice_set_key);
*/
bool qcom_scm_hdcp_available(void)
{
bool avail;
int ret = qcom_scm_clk_enable();
if (ret)
return ret;
ret = __qcom_scm_is_call_available(__scm->dev, QCOM_SCM_SVC_HDCP,
avail = __qcom_scm_is_call_available(__scm->dev, QCOM_SCM_SVC_HDCP,
QCOM_SCM_HDCP_INVOKE);
qcom_scm_clk_disable();
return ret > 0;
return avail;
}
EXPORT_SYMBOL(qcom_scm_hdcp_available);
@ -1242,7 +1252,7 @@ static int qcom_scm_probe(struct platform_device *pdev)
__scm = scm;
__scm->dev = &pdev->dev;
__query_convention();
__get_convention();
/*
* If requested enable "download mode", from this point on warmboot
@ -1291,6 +1301,7 @@ static struct platform_driver qcom_scm_driver = {
.driver = {
.name = "qcom_scm",
.of_match_table = qcom_scm_dt_match,
.suppress_bind_attrs = true,
},
.probe = qcom_scm_probe,
.shutdown = qcom_scm_shutdown,

7
drivers/firmware/qcom_scm.h
Просмотреть файл

@ -61,8 +61,11 @@ struct qcom_scm_res {
};
#define SCM_SMC_FNID(s, c) ((((s) & 0xFF) << 8) | ((c) & 0xFF))
extern int scm_smc_call(struct device *dev, const struct qcom_scm_desc *desc,
struct qcom_scm_res *res, bool atomic);
extern int __scm_smc_call(struct device *dev, const struct qcom_scm_desc *desc,
enum qcom_scm_convention qcom_convention,
struct qcom_scm_res *res, bool atomic);
#define scm_smc_call(dev, desc, res, atomic) \
__scm_smc_call((dev), (desc), qcom_scm_convention, (res), (atomic))
#define SCM_LEGACY_FNID(s, c) (((s) << 10) | ((c) & 0x3ff))
extern int scm_legacy_call_atomic(struct device *dev,

17
drivers/soc/qcom/mdt_loader.c
Просмотреть файл

@ -230,6 +230,14 @@ static int __qcom_mdt_load(struct device *dev, const struct firmware *fw,
break;
}
if (phdr->p_filesz > phdr->p_memsz) {
dev_err(dev,
"refusing to load segment %d with p_filesz > p_memsz\n",
i);
ret = -EINVAL;
break;
}
ptr = mem_region + offset;
if (phdr->p_filesz && phdr->p_offset < fw->size) {
@ -253,6 +261,15 @@ static int __qcom_mdt_load(struct device *dev, const struct firmware *fw,
break;
}
if (seg_fw->size != phdr->p_filesz) {
dev_err(dev,
"failed to load segment %d from truncated file %s\n",
i, fw_name);
release_firmware(seg_fw);
ret = -EINVAL;
break;
}
release_firmware(seg_fw);
}

2
drivers/soc/qcom/pdr_interface.c
Просмотреть файл

@ -153,7 +153,7 @@ static int pdr_register_listener(struct pdr_handle *pdr,
if (resp.resp.result != QMI_RESULT_SUCCESS_V01) {
pr_err("PDR: %s register listener failed: 0x%x\n",
pds->service_path, resp.resp.error);
return ret;
return -EREMOTEIO;
}
pds->state = resp.curr_state;

15
drivers/soc/qcom/wcnss_ctrl.c
Просмотреть файл

@ -199,6 +199,8 @@ static int wcnss_download_nv(struct wcnss_ctrl *wcnss, bool *expect_cbc)
{
struct wcnss_download_nv_req *req;
const struct firmware *fw;
struct device *dev = wcnss->dev;
const char *nvbin = NVBIN_FILE;
const void *data;
ssize_t left;
int ret;
@ -207,10 +209,13 @@ static int wcnss_download_nv(struct wcnss_ctrl *wcnss, bool *expect_cbc)
if (!req)
return -ENOMEM;
ret = request_firmware(&fw, NVBIN_FILE, wcnss->dev);
ret = of_property_read_string(dev->of_node, "firmware-name", &nvbin);
if (ret < 0 && ret != -EINVAL)
goto free_req;
ret = request_firmware(&fw, nvbin, dev);
if (ret < 0) {
dev_err(wcnss->dev, "Failed to load nv file %s: %d\n",
NVBIN_FILE, ret);
dev_err(dev, "Failed to load nv file %s: %d\n", nvbin, ret);
goto free_req;
}
@ -235,7 +240,7 @@ static int wcnss_download_nv(struct wcnss_ctrl *wcnss, bool *expect_cbc)
ret = rpmsg_send(wcnss->channel, req, req->hdr.len);
if (ret < 0) {
dev_err(wcnss->dev, "failed to send smd packet\n");
dev_err(dev, "failed to send smd packet\n");
goto release_fw;
}
@ -248,7 +253,7 @@ static int wcnss_download_nv(struct wcnss_ctrl *wcnss, bool *expect_cbc)
ret = wait_for_completion_timeout(&wcnss->ack, WCNSS_REQUEST_TIMEOUT);
if (!ret) {
dev_err(wcnss->dev, "timeout waiting for nv upload ack\n");
dev_err(dev, "timeout waiting for nv upload ack\n");
ret = -ETIMEDOUT;
} else {
*expect_cbc = wcnss->ack_status == WCNSS_ACK_COLD_BOOTING;

2
include/linux/soc/qcom/apr.h
Просмотреть файл

@ -113,7 +113,7 @@ void apr_driver_unregister(struct apr_driver *drv);
/**
* module_apr_driver() - Helper macro for registering a aprbus driver
* @__aprbus_driver: aprbus_driver struct
* @__apr_driver: apr_driver struct
*
* Helper macro for aprbus drivers which do not do anything special in
* module init/exit. This eliminates a lot of boilerplate. Each module

2
include/linux/soc/qcom/irq.h
Просмотреть файл

@ -7,7 +7,7 @@
#define GPIO_NO_WAKE_IRQ ~0U
/**
/*
* QCOM specific IRQ domain flags that distinguishes the handling of wakeup
* capable interrupts by different interrupt controllers.
*

6
include/linux/soc/qcom/llcc-qcom.h
Просмотреть файл

@ -35,7 +35,7 @@
#define LLCC_WRCACHE 31
/**
* llcc_slice_desc - Cache slice descriptor
* struct llcc_slice_desc - Cache slice descriptor
* @slice_id: llcc slice id
* @slice_size: Size allocated for the llcc slice
*/
@ -45,7 +45,7 @@ struct llcc_slice_desc {
};
/**
* llcc_edac_reg_data - llcc edac registers data for each error type
* struct llcc_edac_reg_data - llcc edac registers data for each error type
* @name: Name of the error
* @synd_reg: Syndrome register address
* @count_status_reg: Status register address to read the error count
@ -69,7 +69,7 @@ struct llcc_edac_reg_data {
};
/**
* llcc_drv_data - Data associated with the llcc driver
* struct llcc_drv_data - Data associated with the llcc driver
* @regmap: regmap associated with the llcc device
* @bcast_regmap: regmap associated with llcc broadcast offset
* @cfg: pointer to the data structure for slice configuration

4
include/linux/soc/qcom/qmi.h
Просмотреть файл

@ -16,7 +16,7 @@
struct socket;
/**
* qmi_header - wireformat header of QMI messages
* struct qmi_header - wireformat header of QMI messages
* @type: type of message
* @txn_id: transaction id
* @msg_id: message id
@ -93,7 +93,7 @@ struct qmi_elem_info {
#define QMI_ERR_NOT_SUPPORTED_V01 94
/**
* qmi_response_type_v01 - common response header (decoded)
* struct qmi_response_type_v01 - common response header (decoded)
* @result: result of the transaction
* @error: error value, when @result is QMI_RESULT_FAILURE_V01
*/