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Message-Id: <20220629112913.1210933-9-alexander.usyskin@intel.com>
Date: Wed, 29 Jun 2022 14:29:07 +0300
From: Alexander Usyskin <alexander.usyskin@...el.com>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Jani Nikula <jani.nikula@...ux.intel.com>,
Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
Rodrigo Vivi <rodrigo.vivi@...el.com>,
David Airlie <airlied@...ux.ie>,
Daniel Vetter <daniel@...ll.ch>,
Tvrtko Ursulin <tvrtko.ursulin@...ux.intel.com>
Cc: Tomas Winkler <tomas.winkler@...el.com>,
Alexander Usyskin <alexander.usyskin@...el.com>,
Vitaly Lubart <vitaly.lubart@...el.com>,
intel-gfx@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: [PATCH v4 08/14] mei: extend timeouts on slow devices.
Parametrize operational timeouts in order
to support slow firmware on some graphic devices.
Signed-off-by: Alexander Usyskin <alexander.usyskin@...el.com>
Signed-off-by: Tomas Winkler <tomas.winkler@...el.com>
---
drivers/misc/mei/bus-fixup.c | 3 +--
drivers/misc/mei/client.c | 14 +++++++-------
drivers/misc/mei/gsc-me.c | 2 +-
drivers/misc/mei/hbm.c | 12 ++++++------
drivers/misc/mei/hw-me.c | 30 ++++++++++++++++--------------
drivers/misc/mei/hw-me.h | 2 +-
drivers/misc/mei/hw-txe.c | 2 +-
drivers/misc/mei/hw.h | 5 +++++
drivers/misc/mei/init.c | 19 ++++++++++++++++++-
drivers/misc/mei/main.c | 2 +-
drivers/misc/mei/mei_dev.h | 16 ++++++++++++++++
drivers/misc/mei/pci-me.c | 2 +-
12 files changed, 74 insertions(+), 35 deletions(-)
diff --git a/drivers/misc/mei/bus-fixup.c b/drivers/misc/mei/bus-fixup.c
index 59506ba6fc48..24e91a9ea558 100644
--- a/drivers/misc/mei/bus-fixup.c
+++ b/drivers/misc/mei/bus-fixup.c
@@ -164,7 +164,6 @@ static int mei_osver(struct mei_cl_device *cldev)
sizeof(struct mkhi_fw_ver))
#define MKHI_FWVER_LEN(__num) (sizeof(struct mkhi_msg_hdr) + \
sizeof(struct mkhi_fw_ver_block) * (__num))
-#define MKHI_RCV_TIMEOUT 500 /* receive timeout in msec */
static int mei_fwver(struct mei_cl_device *cldev)
{
char buf[MKHI_FWVER_BUF_LEN];
@@ -187,7 +186,7 @@ static int mei_fwver(struct mei_cl_device *cldev)
ret = 0;
bytes_recv = __mei_cl_recv(cldev->cl, buf, sizeof(buf), NULL, 0,
- MKHI_RCV_TIMEOUT);
+ cldev->bus->timeouts.mkhi_recv);
if (bytes_recv < 0 || (size_t)bytes_recv < MKHI_FWVER_LEN(1)) {
/*
* Should be at least one version block,
diff --git a/drivers/misc/mei/client.c b/drivers/misc/mei/client.c
index 31264ab2eb13..e7a16d9b2241 100644
--- a/drivers/misc/mei/client.c
+++ b/drivers/misc/mei/client.c
@@ -870,7 +870,7 @@ static int mei_cl_send_disconnect(struct mei_cl *cl, struct mei_cl_cb *cb)
}
list_move_tail(&cb->list, &dev->ctrl_rd_list);
- cl->timer_count = MEI_CONNECT_TIMEOUT;
+ cl->timer_count = dev->timeouts.connect;
mei_schedule_stall_timer(dev);
return 0;
@@ -945,7 +945,7 @@ static int __mei_cl_disconnect(struct mei_cl *cl)
wait_event_timeout(cl->wait,
cl->state == MEI_FILE_DISCONNECT_REPLY ||
cl->state == MEI_FILE_DISCONNECTED,
- mei_secs_to_jiffies(MEI_CL_CONNECT_TIMEOUT));
+ dev->timeouts.cl_connect);
mutex_lock(&dev->device_lock);
rets = cl->status;
@@ -1065,7 +1065,7 @@ static int mei_cl_send_connect(struct mei_cl *cl, struct mei_cl_cb *cb)
}
list_move_tail(&cb->list, &dev->ctrl_rd_list);
- cl->timer_count = MEI_CONNECT_TIMEOUT;
+ cl->timer_count = dev->timeouts.connect;
mei_schedule_stall_timer(dev);
return 0;
}
@@ -1164,7 +1164,7 @@ int mei_cl_connect(struct mei_cl *cl, struct mei_me_client *me_cl,
cl->state == MEI_FILE_DISCONNECTED ||
cl->state == MEI_FILE_DISCONNECT_REQUIRED ||
cl->state == MEI_FILE_DISCONNECT_REPLY),
- mei_secs_to_jiffies(MEI_CL_CONNECT_TIMEOUT));
+ dev->timeouts.cl_connect);
mutex_lock(&dev->device_lock);
if (!mei_cl_is_connected(cl)) {
@@ -1562,7 +1562,7 @@ int mei_cl_notify_request(struct mei_cl *cl,
cl->notify_en == request ||
cl->status ||
!mei_cl_is_connected(cl),
- mei_secs_to_jiffies(MEI_CL_CONNECT_TIMEOUT));
+ dev->timeouts.cl_connect);
mutex_lock(&dev->device_lock);
if (cl->notify_en != request && !cl->status)
@@ -2336,7 +2336,7 @@ int mei_cl_dma_alloc_and_map(struct mei_cl *cl, const struct file *fp,
mutex_unlock(&dev->device_lock);
wait_event_timeout(cl->wait,
cl->dma_mapped || cl->status,
- mei_secs_to_jiffies(MEI_CL_CONNECT_TIMEOUT));
+ dev->timeouts.cl_connect);
mutex_lock(&dev->device_lock);
if (!cl->dma_mapped && !cl->status)
@@ -2415,7 +2415,7 @@ int mei_cl_dma_unmap(struct mei_cl *cl, const struct file *fp)
mutex_unlock(&dev->device_lock);
wait_event_timeout(cl->wait,
!cl->dma_mapped || cl->status,
- mei_secs_to_jiffies(MEI_CL_CONNECT_TIMEOUT));
+ dev->timeouts.cl_connect);
mutex_lock(&dev->device_lock);
if (cl->dma_mapped && !cl->status)
diff --git a/drivers/misc/mei/gsc-me.c b/drivers/misc/mei/gsc-me.c
index 2caba3a9ac35..4f6c916282b7 100644
--- a/drivers/misc/mei/gsc-me.c
+++ b/drivers/misc/mei/gsc-me.c
@@ -48,7 +48,7 @@ static int mei_gsc_probe(struct auxiliary_device *aux_dev,
device = &aux_dev->dev;
- dev = mei_me_dev_init(device, cfg);
+ dev = mei_me_dev_init(device, cfg, adev->slow_fw);
if (!dev) {
ret = -ENOMEM;
goto err;
diff --git a/drivers/misc/mei/hbm.c b/drivers/misc/mei/hbm.c
index cf2b8261da14..708765056af2 100644
--- a/drivers/misc/mei/hbm.c
+++ b/drivers/misc/mei/hbm.c
@@ -232,7 +232,7 @@ int mei_hbm_start_wait(struct mei_device *dev)
mutex_unlock(&dev->device_lock);
ret = wait_event_timeout(dev->wait_hbm_start,
dev->hbm_state != MEI_HBM_STARTING,
- mei_secs_to_jiffies(MEI_HBM_TIMEOUT));
+ dev->timeouts.hbm);
mutex_lock(&dev->device_lock);
if (ret == 0 && (dev->hbm_state <= MEI_HBM_STARTING)) {
@@ -275,7 +275,7 @@ int mei_hbm_start_req(struct mei_device *dev)
}
dev->hbm_state = MEI_HBM_STARTING;
- dev->init_clients_timer = MEI_CLIENTS_INIT_TIMEOUT;
+ dev->init_clients_timer = dev->timeouts.client_init;
mei_schedule_stall_timer(dev);
return 0;
}
@@ -316,7 +316,7 @@ static int mei_hbm_dma_setup_req(struct mei_device *dev)
}
dev->hbm_state = MEI_HBM_DR_SETUP;
- dev->init_clients_timer = MEI_CLIENTS_INIT_TIMEOUT;
+ dev->init_clients_timer = dev->timeouts.client_init;
mei_schedule_stall_timer(dev);
return 0;
}
@@ -351,7 +351,7 @@ static int mei_hbm_capabilities_req(struct mei_device *dev)
}
dev->hbm_state = MEI_HBM_CAP_SETUP;
- dev->init_clients_timer = MEI_CLIENTS_INIT_TIMEOUT;
+ dev->init_clients_timer = dev->timeouts.client_init;
mei_schedule_stall_timer(dev);
return 0;
}
@@ -385,7 +385,7 @@ static int mei_hbm_enum_clients_req(struct mei_device *dev)
return ret;
}
dev->hbm_state = MEI_HBM_ENUM_CLIENTS;
- dev->init_clients_timer = MEI_CLIENTS_INIT_TIMEOUT;
+ dev->init_clients_timer = dev->timeouts.client_init;
mei_schedule_stall_timer(dev);
return 0;
}
@@ -751,7 +751,7 @@ static int mei_hbm_prop_req(struct mei_device *dev, unsigned long start_idx)
return ret;
}
- dev->init_clients_timer = MEI_CLIENTS_INIT_TIMEOUT;
+ dev->init_clients_timer = dev->timeouts.client_init;
mei_schedule_stall_timer(dev);
return 0;
diff --git a/drivers/misc/mei/hw-me.c b/drivers/misc/mei/hw-me.c
index 46559517a902..6a8e8f3cea7e 100644
--- a/drivers/misc/mei/hw-me.c
+++ b/drivers/misc/mei/hw-me.c
@@ -445,7 +445,7 @@ static int mei_me_hw_ready_wait(struct mei_device *dev)
mutex_unlock(&dev->device_lock);
wait_event_timeout(dev->wait_hw_ready,
dev->recvd_hw_ready,
- mei_secs_to_jiffies(MEI_HW_READY_TIMEOUT));
+ dev->timeouts.hw_ready);
mutex_lock(&dev->device_lock);
if (!dev->recvd_hw_ready) {
dev_err(dev->dev, "wait hw ready failed\n");
@@ -707,7 +707,6 @@ static void mei_me_pg_unset(struct mei_device *dev)
static int mei_me_pg_legacy_enter_sync(struct mei_device *dev)
{
struct mei_me_hw *hw = to_me_hw(dev);
- unsigned long timeout = mei_secs_to_jiffies(MEI_PGI_TIMEOUT);
int ret;
dev->pg_event = MEI_PG_EVENT_WAIT;
@@ -718,7 +717,8 @@ static int mei_me_pg_legacy_enter_sync(struct mei_device *dev)
mutex_unlock(&dev->device_lock);
wait_event_timeout(dev->wait_pg,
- dev->pg_event == MEI_PG_EVENT_RECEIVED, timeout);
+ dev->pg_event == MEI_PG_EVENT_RECEIVED,
+ dev->timeouts.pgi);
mutex_lock(&dev->device_lock);
if (dev->pg_event == MEI_PG_EVENT_RECEIVED) {
@@ -744,7 +744,6 @@ static int mei_me_pg_legacy_enter_sync(struct mei_device *dev)
static int mei_me_pg_legacy_exit_sync(struct mei_device *dev)
{
struct mei_me_hw *hw = to_me_hw(dev);
- unsigned long timeout = mei_secs_to_jiffies(MEI_PGI_TIMEOUT);
int ret;
if (dev->pg_event == MEI_PG_EVENT_RECEIVED)
@@ -756,7 +755,8 @@ static int mei_me_pg_legacy_exit_sync(struct mei_device *dev)
mutex_unlock(&dev->device_lock);
wait_event_timeout(dev->wait_pg,
- dev->pg_event == MEI_PG_EVENT_RECEIVED, timeout);
+ dev->pg_event == MEI_PG_EVENT_RECEIVED,
+ dev->timeouts.pgi);
mutex_lock(&dev->device_lock);
reply:
@@ -772,7 +772,8 @@ static int mei_me_pg_legacy_exit_sync(struct mei_device *dev)
mutex_unlock(&dev->device_lock);
wait_event_timeout(dev->wait_pg,
- dev->pg_event == MEI_PG_EVENT_INTR_RECEIVED, timeout);
+ dev->pg_event == MEI_PG_EVENT_INTR_RECEIVED,
+ dev->timeouts.pgi);
mutex_lock(&dev->device_lock);
if (dev->pg_event == MEI_PG_EVENT_INTR_RECEIVED)
@@ -887,8 +888,6 @@ static u32 mei_me_d0i3_unset(struct mei_device *dev)
static int mei_me_d0i3_enter_sync(struct mei_device *dev)
{
struct mei_me_hw *hw = to_me_hw(dev);
- unsigned long d0i3_timeout = mei_secs_to_jiffies(MEI_D0I3_TIMEOUT);
- unsigned long pgi_timeout = mei_secs_to_jiffies(MEI_PGI_TIMEOUT);
int ret;
u32 reg;
@@ -910,7 +909,8 @@ static int mei_me_d0i3_enter_sync(struct mei_device *dev)
mutex_unlock(&dev->device_lock);
wait_event_timeout(dev->wait_pg,
- dev->pg_event == MEI_PG_EVENT_RECEIVED, pgi_timeout);
+ dev->pg_event == MEI_PG_EVENT_RECEIVED,
+ dev->timeouts.pgi);
mutex_lock(&dev->device_lock);
if (dev->pg_event != MEI_PG_EVENT_RECEIVED) {
@@ -930,7 +930,8 @@ static int mei_me_d0i3_enter_sync(struct mei_device *dev)
mutex_unlock(&dev->device_lock);
wait_event_timeout(dev->wait_pg,
- dev->pg_event == MEI_PG_EVENT_INTR_RECEIVED, d0i3_timeout);
+ dev->pg_event == MEI_PG_EVENT_INTR_RECEIVED,
+ dev->timeouts.d0i3);
mutex_lock(&dev->device_lock);
if (dev->pg_event != MEI_PG_EVENT_INTR_RECEIVED) {
@@ -990,7 +991,6 @@ static int mei_me_d0i3_enter(struct mei_device *dev)
static int mei_me_d0i3_exit_sync(struct mei_device *dev)
{
struct mei_me_hw *hw = to_me_hw(dev);
- unsigned long timeout = mei_secs_to_jiffies(MEI_D0I3_TIMEOUT);
int ret;
u32 reg;
@@ -1013,7 +1013,8 @@ static int mei_me_d0i3_exit_sync(struct mei_device *dev)
mutex_unlock(&dev->device_lock);
wait_event_timeout(dev->wait_pg,
- dev->pg_event == MEI_PG_EVENT_INTR_RECEIVED, timeout);
+ dev->pg_event == MEI_PG_EVENT_INTR_RECEIVED,
+ dev->timeouts.pgi);
mutex_lock(&dev->device_lock);
if (dev->pg_event != MEI_PG_EVENT_INTR_RECEIVED) {
@@ -1686,11 +1687,12 @@ EXPORT_SYMBOL_GPL(mei_me_get_cfg);
*
* @parent: device associated with physical device (pci/platform)
* @cfg: per device generation config
+ * @slow_fw: configure longer timeouts as FW is slow
*
* Return: The mei_device pointer on success, NULL on failure.
*/
struct mei_device *mei_me_dev_init(struct device *parent,
- const struct mei_cfg *cfg)
+ const struct mei_cfg *cfg, bool slow_fw)
{
struct mei_device *dev;
struct mei_me_hw *hw;
@@ -1705,7 +1707,7 @@ struct mei_device *mei_me_dev_init(struct device *parent,
for (i = 0; i < DMA_DSCR_NUM; i++)
dev->dr_dscr[i].size = cfg->dma_size[i];
- mei_device_init(dev, parent, &mei_me_hw_ops);
+ mei_device_init(dev, parent, slow_fw, &mei_me_hw_ops);
hw->cfg = cfg;
dev->fw_f_fw_ver_supported = cfg->fw_ver_supported;
diff --git a/drivers/misc/mei/hw-me.h b/drivers/misc/mei/hw-me.h
index ca09274ac299..0e9d90808bcf 100644
--- a/drivers/misc/mei/hw-me.h
+++ b/drivers/misc/mei/hw-me.h
@@ -131,7 +131,7 @@ enum mei_cfg_idx {
const struct mei_cfg *mei_me_get_cfg(kernel_ulong_t idx);
struct mei_device *mei_me_dev_init(struct device *parent,
- const struct mei_cfg *cfg);
+ const struct mei_cfg *cfg, bool slow_fw);
int mei_me_pg_enter_sync(struct mei_device *dev);
int mei_me_pg_exit_sync(struct mei_device *dev);
diff --git a/drivers/misc/mei/hw-txe.c b/drivers/misc/mei/hw-txe.c
index 00652c137cc7..fccfa806bd63 100644
--- a/drivers/misc/mei/hw-txe.c
+++ b/drivers/misc/mei/hw-txe.c
@@ -1201,7 +1201,7 @@ struct mei_device *mei_txe_dev_init(struct pci_dev *pdev)
if (!dev)
return NULL;
- mei_device_init(dev, &pdev->dev, &mei_txe_hw_ops);
+ mei_device_init(dev, &pdev->dev, false, &mei_txe_hw_ops);
hw = to_txe_hw(dev);
diff --git a/drivers/misc/mei/hw.h b/drivers/misc/mei/hw.h
index b46077b17114..9381e5c13b4f 100644
--- a/drivers/misc/mei/hw.h
+++ b/drivers/misc/mei/hw.h
@@ -16,11 +16,16 @@
#define MEI_CONNECT_TIMEOUT 3 /* HPS: at least 2 seconds */
#define MEI_CL_CONNECT_TIMEOUT 15 /* HPS: Client Connect Timeout */
+#define MEI_CL_CONNECT_TIMEOUT_SLOW 30 /* HPS: Client Connect Timeout, slow FW */
#define MEI_CLIENTS_INIT_TIMEOUT 15 /* HPS: Clients Enumeration Timeout */
#define MEI_PGI_TIMEOUT 1 /* PG Isolation time response 1 sec */
#define MEI_D0I3_TIMEOUT 5 /* D0i3 set/unset max response time */
#define MEI_HBM_TIMEOUT 1 /* 1 second */
+#define MEI_HBM_TIMEOUT_SLOW 5 /* 5 second, slow FW */
+
+#define MKHI_RCV_TIMEOUT 500 /* receive timeout in msec */
+#define MKHI_RCV_TIMEOUT_SLOW 10000 /* receive timeout in msec, slow FW */
/*
* FW page size for DMA allocations
diff --git a/drivers/misc/mei/init.c b/drivers/misc/mei/init.c
index 5bb6ba662cc0..ce030a882d0c 100644
--- a/drivers/misc/mei/init.c
+++ b/drivers/misc/mei/init.c
@@ -359,14 +359,16 @@ bool mei_write_is_idle(struct mei_device *dev)
EXPORT_SYMBOL_GPL(mei_write_is_idle);
/**
- * mei_device_init -- initialize mei_device structure
+ * mei_device_init - initialize mei_device structure
*
* @dev: the mei device
* @device: the device structure
+ * @slow_fw: configure longer timeouts as FW is slow
* @hw_ops: hw operations
*/
void mei_device_init(struct mei_device *dev,
struct device *device,
+ bool slow_fw,
const struct mei_hw_ops *hw_ops)
{
/* setup our list array */
@@ -404,6 +406,21 @@ void mei_device_init(struct mei_device *dev,
dev->pg_event = MEI_PG_EVENT_IDLE;
dev->ops = hw_ops;
dev->dev = device;
+
+ dev->timeouts.hw_ready = mei_secs_to_jiffies(MEI_HW_READY_TIMEOUT);
+ dev->timeouts.connect = MEI_CONNECT_TIMEOUT;
+ dev->timeouts.client_init = MEI_CLIENTS_INIT_TIMEOUT;
+ dev->timeouts.pgi = mei_secs_to_jiffies(MEI_PGI_TIMEOUT);
+ dev->timeouts.d0i3 = mei_secs_to_jiffies(MEI_D0I3_TIMEOUT);
+ if (slow_fw) {
+ dev->timeouts.cl_connect = mei_secs_to_jiffies(MEI_CL_CONNECT_TIMEOUT_SLOW);
+ dev->timeouts.hbm = mei_secs_to_jiffies(MEI_HBM_TIMEOUT_SLOW);
+ dev->timeouts.mkhi_recv = msecs_to_jiffies(MKHI_RCV_TIMEOUT_SLOW);
+ } else {
+ dev->timeouts.cl_connect = mei_secs_to_jiffies(MEI_CL_CONNECT_TIMEOUT);
+ dev->timeouts.hbm = mei_secs_to_jiffies(MEI_HBM_TIMEOUT);
+ dev->timeouts.mkhi_recv = msecs_to_jiffies(MKHI_RCV_TIMEOUT);
+ }
}
EXPORT_SYMBOL_GPL(mei_device_init);
diff --git a/drivers/misc/mei/main.c b/drivers/misc/mei/main.c
index 786f7c8f7f61..261939b945ef 100644
--- a/drivers/misc/mei/main.c
+++ b/drivers/misc/mei/main.c
@@ -571,7 +571,7 @@ static int mei_ioctl_connect_vtag(struct file *file,
cl->state == MEI_FILE_DISCONNECTED ||
cl->state == MEI_FILE_DISCONNECT_REQUIRED ||
cl->state == MEI_FILE_DISCONNECT_REPLY),
- mei_secs_to_jiffies(MEI_CL_CONNECT_TIMEOUT));
+ dev->timeouts.cl_connect);
mutex_lock(&dev->device_lock);
}
diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h
index 694f866f87ef..16f59b3a45fc 100644
--- a/drivers/misc/mei/mei_dev.h
+++ b/drivers/misc/mei/mei_dev.h
@@ -415,6 +415,17 @@ struct mei_fw_version {
#define MEI_MAX_FW_VER_BLOCKS 3
+struct mei_dev_timeouts {
+ unsigned long hw_ready; /* Timeout on ready message, in jiffies */
+ int connect; /* HPS: at least 2 seconds, in seconds */
+ unsigned long cl_connect; /* HPS: Client Connect Timeout, in jiffies */
+ int client_init; /* HPS: Clients Enumeration Timeout, in seconds */
+ unsigned long pgi; /* PG Isolation time response, in jiffies */
+ unsigned int d0i3; /* D0i3 set/unset max response time, in jiffies */
+ unsigned long hbm; /* HBM operation timeout, in jiffies */
+ unsigned long mkhi_recv; /* receive timeout, in jiffies */
+};
+
/**
* struct mei_device - MEI private device struct
*
@@ -480,6 +491,8 @@ struct mei_fw_version {
* @allow_fixed_address: allow user space to connect a fixed client
* @override_fixed_address: force allow fixed address behavior
*
+ * @timeouts: actual timeout values
+ *
* @reset_work : work item for the device reset
* @bus_rescan_work : work item for the bus rescan
*
@@ -568,6 +581,8 @@ struct mei_device {
bool allow_fixed_address;
bool override_fixed_address;
+ struct mei_dev_timeouts timeouts;
+
struct work_struct reset_work;
struct work_struct bus_rescan_work;
@@ -632,6 +647,7 @@ static inline u32 mei_slots2data(int slots)
*/
void mei_device_init(struct mei_device *dev,
struct device *device,
+ bool slow_fw,
const struct mei_hw_ops *hw_ops);
int mei_reset(struct mei_device *dev);
int mei_start(struct mei_device *dev);
diff --git a/drivers/misc/mei/pci-me.c b/drivers/misc/mei/pci-me.c
index 5435604327a7..b5af4e79bd52 100644
--- a/drivers/misc/mei/pci-me.c
+++ b/drivers/misc/mei/pci-me.c
@@ -203,7 +203,7 @@ static int mei_me_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
}
/* allocates and initializes the mei dev structure */
- dev = mei_me_dev_init(&pdev->dev, cfg);
+ dev = mei_me_dev_init(&pdev->dev, cfg, false);
if (!dev) {
err = -ENOMEM;
goto end;
--
2.34.1
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