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vmtd: Enable timeout for requests

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Enabled timeout of 30 seconds for each
MTD request.

Jira SSV-13035

Change-Id: I7629223cef58abff6003601e78fbe6a71a065bd1
Signed-off-by: Sanjith T D <std@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/3357961
Reviewed-by: svcacv <svcacv@nvidia.com>
GVS: buildbot_gerritrpt <buildbot_gerritrpt@nvidia.com>
Reviewed-by: Sreenivas Velpula <svelpula@nvidia.com>
Reviewed-by: Vipin Kumar <vipink@nvidia.com>
This commit is contained in:
Sanjith T D
2025-05-06 12:31:23 +00:00
committed by Jon Hunter
parent 31594cb465
commit a5b3a14cc8
1 changed files with 61 additions and 21 deletions
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76
drivers/mtd/devices/tegra_hv_mtd.c
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@@ -41,6 +41,7 @@ static uint32_t total_instance_id;
#endif
#define DEFAULT_INIT_VCPU (0U)
#define IVC_TIMEOUT_MS (30000)
struct vmtd_dev {
struct vs_config_info config;
@@ -124,14 +125,31 @@ static irqreturn_t ivc_irq_handler(int irq, void *data)
* @}
*/
static int vmtd_send_cmd(struct vmtd_dev *vmtddev, struct vs_request *vs_req)
static int vmtd_send_cmd(struct vmtd_dev *vmtddev, struct vs_request *vs_req, bool use_timeout)
{
/* This while loop exits as long as the remote endpoint cooperates. */
while (tegra_hv_ivc_channel_notified(vmtddev->ivck) != 0)
while (tegra_hv_ivc_channel_notified(vmtddev->ivck) != 0) {
if (use_timeout) {
if ((wait_for_completion_timeout(&vmtddev->msg_complete,
msecs_to_jiffies(IVC_TIMEOUT_MS)) == 0)) {
dev_err(vmtddev->device, "Request sending timeout - 1!\n");
return -EIO;
}
} else {
wait_for_completion(&vmtddev->msg_complete);
}
}
while (!tegra_hv_ivc_can_write(vmtddev->ivck))
while (!tegra_hv_ivc_can_write(vmtddev->ivck)) {
if (use_timeout) {
if ((wait_for_completion_timeout(&vmtddev->msg_complete,
msecs_to_jiffies(IVC_TIMEOUT_MS)) == 0)) {
dev_err(vmtddev->device, "Request sending timeout - 2!\n");
return -EIO;
}
} else {
wait_for_completion(&vmtddev->msg_complete);
}
}
if (tegra_hv_ivc_write(vmtddev->ivck, vs_req,
sizeof(struct vs_request)) != sizeof(struct vs_request)) {
@@ -142,14 +160,32 @@ static int vmtd_send_cmd(struct vmtd_dev *vmtddev, struct vs_request *vs_req)
return 0;
}
static int vmtd_get_resp(struct vmtd_dev *vmtddev, struct vs_request *vs_req)
static int vmtd_get_resp(struct vmtd_dev *vmtddev, struct vs_request *vs_req, bool use_timeout)
{
/* This while loop exits as long as the remote endpoint cooperates. */
while (tegra_hv_ivc_channel_notified(vmtddev->ivck) != 0)
wait_for_completion(&vmtddev->msg_complete);
while (!tegra_hv_ivc_can_read(vmtddev->ivck))
while (tegra_hv_ivc_channel_notified(vmtddev->ivck) != 0) {
if (use_timeout) {
if ((wait_for_completion_timeout(&vmtddev->msg_complete,
msecs_to_jiffies(IVC_TIMEOUT_MS)) == 0)) {
dev_err(vmtddev->device, "Response fetching timeout - 1!\n");
return -EIO;
}
} else {
wait_for_completion(&vmtddev->msg_complete);
}
}
while (!tegra_hv_ivc_can_read(vmtddev->ivck)) {
if (use_timeout) {
if ((wait_for_completion_timeout(&vmtddev->msg_complete,
msecs_to_jiffies(IVC_TIMEOUT_MS)) == 0)) {
dev_err(vmtddev->device, "Response fetching timeout - 2!\n");
return -EIO;
}
} else {
wait_for_completion(&vmtddev->msg_complete);
}
}
if (tegra_hv_ivc_read(vmtddev->ivck, vs_req,
sizeof(struct vs_request)) != sizeof(struct vs_request)) {
@@ -161,7 +197,7 @@ static int vmtd_get_resp(struct vmtd_dev *vmtddev, struct vs_request *vs_req)
}
static int vmtd_process_request(struct vmtd_dev *vmtddev,
struct vs_request *vs_req)
struct vs_request *vs_req, bool use_timeout)
{
#if (IS_ENABLED(CONFIG_TEGRA_HSIERRRPTINJ))
uint32_t num_bytes;
@@ -179,7 +215,7 @@ static int vmtd_process_request(struct vmtd_dev *vmtddev,
}
#endif
ret = vmtd_send_cmd(vmtddev, vs_req);
ret = vmtd_send_cmd(vmtddev, vs_req, use_timeout);
if (ret != 0) {
dev_err(vmtddev->device,
"Sending %d failed!\n",
@@ -188,7 +224,7 @@ static int vmtd_process_request(struct vmtd_dev *vmtddev,
}
vs_req = (struct vs_request *)vmtddev->cmd_frame;
ret = vmtd_get_resp(vmtddev, vs_req);
ret = vmtd_get_resp(vmtddev, vs_req, use_timeout);
if (ret != 0) {
dev_err(vmtddev->device,
"fetching response failed!\n");
@@ -330,7 +366,7 @@ static int vmtd_read(struct mtd_info *mtd, loff_t from, size_t len,
vs_req->mtddev_req.mtd_req.data_offset = 0;
vs_req->req_id = 0;
ret = vmtd_process_request(vmtddev, vs_req);
ret = vmtd_process_request(vmtddev, vs_req, true);
if (ret != 0) {
dev_err(vmtddev->device,
"Read for offset %llx size %lx failed!\n",
@@ -425,7 +461,7 @@ static int vmtd_write(struct mtd_info *mtd, loff_t to, size_t len,
memcpy(vmtddev->shared_buffer, buf_addr, write_size);
ret = vmtd_process_request(vmtddev, vs_req);
ret = vmtd_process_request(vmtddev, vs_req, true);
if (ret != 0) {
dev_err(vmtddev->device,
"write for offset %llx size %lx failed!\n",
@@ -507,7 +543,11 @@ static int vmtd_erase(struct mtd_info *mtd, struct erase_info *instr)
vs_req->mtddev_req.mtd_req.data_offset = 0;
vs_req->req_id = 0;
ret = vmtd_process_request(vmtddev, vs_req);
/* FIXME: Erase timeout is not needed as the User is expected to have timeout for operations
* To have timeout for erase, there should be a max_erase_bytes attribute in vs_mtd_info
* and the timeout should be tuned to match this attribute value.
*/
ret = vmtd_process_request(vmtddev, vs_req, false);
if (ret != 0) {
dev_err(vmtddev->device,
"Erase for offset %llx size %llx failed!\n",
@@ -926,7 +966,7 @@ static ssize_t ecc_status_show(struct device *dev,
/* FIXME: Need to choose request id based on some logic instead of 0 */
vs_req->req_id = 0;
ret = vmtd_process_request(vmtddev, vs_req);
ret = vmtd_process_request(vmtddev, vs_req, true);
if (ret != 0) {
dev_err(vmtddev->device, "Read ECC Failed\n");
return sprintf(buf, "0x%x\n", ECC_REQUEST_FAILED);
@@ -1036,7 +1076,7 @@ static int vmtd_inject_err_fsi(unsigned int inst_id, struct epl_error_report_fra
vs_req->type = VS_ERR_INJECT;
vs_req->error_inject_req.error_id = err_rpt_frame.error_code;
ret = vmtd_process_request(vmtddev, vs_req);
ret = vmtd_process_request(vmtddev, vs_req, true);
if (ret != 0)
dev_err(vmtddev->device,
"Error injection failed for mtd device\n");
@@ -1080,7 +1120,7 @@ static void vmtd_init_device(struct work_struct *ws)
dev_info(vmtddev->device, "send config cmd to ivc #%d\n",
vmtddev->ivc_id);
ret = vmtd_send_cmd(vmtddev, vs_req);
ret = vmtd_send_cmd(vmtddev, vs_req, true);
if (ret != 0) {
dev_err(vmtddev->device, "Sending %d failed!\n",
vs_req->type);