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| author | Wojciech Ziemba <wojciech.ziemba@intel.com> | 2020-06-11 22:14:49 +0100 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2020-06-18 17:26:43 +1000 |
| commit | a79d471c6510db6a69fc2c0f474dbe688bea7641 (patch) | |
| tree | f86f08a8dfcef93c5a752d2de8676e9f1595efe4 | |
| parent | e4e245ad031f82795a2512cb6d3167c824c6fe81 (diff) | |
| download | linux-stable-a79d471c6510db6a69fc2c0f474dbe688bea7641.tar.gz linux-stable-a79d471c6510db6a69fc2c0f474dbe688bea7641.tar.bz2 linux-stable-a79d471c6510db6a69fc2c0f474dbe688bea7641.zip | |
crypto: qat - update timeout logic in put admin msg
Replace timeout logic in adf_put_admin_msg_sync() with existing macro
readl_poll_timeout().
Signed-off-by: Wojciech Ziemba <wojciech.ziemba@intel.com>
Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| -rw-r--r-- | drivers/crypto/qat/qat_common/adf_admin.c | 34 |
1 files changed, 19 insertions, 15 deletions
diff --git a/drivers/crypto/qat/qat_common/adf_admin.c b/drivers/crypto/qat/qat_common/adf_admin.c index aa610f80296d..1c8ca151a963 100644 --- a/drivers/crypto/qat/qat_common/adf_admin.c +++ b/drivers/crypto/qat/qat_common/adf_admin.c @@ -3,7 +3,7 @@ #include <linux/types.h> #include <linux/mutex.h> #include <linux/slab.h> -#include <linux/delay.h> +#include <linux/iopoll.h> #include <linux/pci.h> #include <linux/dma-mapping.h> #include "adf_accel_devices.h" @@ -17,6 +17,8 @@ #define ADF_DH895XCC_MAILBOX_STRIDE 0x1000 #define ADF_ADMINMSG_LEN 32 #define ADF_CONST_TABLE_SIZE 1024 +#define ADF_ADMIN_POLL_DELAY_US 20 +#define ADF_ADMIN_POLL_TIMEOUT_US (5 * USEC_PER_SEC) static const u8 const_tab[1024] __aligned(1024) = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, @@ -111,12 +113,13 @@ struct adf_admin_comms { static int adf_put_admin_msg_sync(struct adf_accel_dev *accel_dev, u32 ae, void *in, void *out) { + int ret; + u32 status; struct adf_admin_comms *admin = accel_dev->admin; int offset = ae * ADF_ADMINMSG_LEN * 2; void __iomem *mailbox = admin->mailbox_addr; int mb_offset = ae * ADF_DH895XCC_MAILBOX_STRIDE; struct icp_qat_fw_init_admin_req *request = in; - int times, received; mutex_lock(&admin->lock); @@ -127,24 +130,25 @@ static int adf_put_admin_msg_sync(struct adf_accel_dev *accel_dev, u32 ae, memcpy(admin->virt_addr + offset, in, ADF_ADMINMSG_LEN); ADF_CSR_WR(mailbox, mb_offset, 1); - received = 0; - for (times = 0; times < 50; times++) { - msleep(20); - if (ADF_CSR_RD(mailbox, mb_offset) == 0) { - received = 1; - break; - } - } - if (received) - memcpy(out, admin->virt_addr + offset + - ADF_ADMINMSG_LEN, ADF_ADMINMSG_LEN); - else + + ret = readl_poll_timeout(mailbox + mb_offset, status, + status == 0, ADF_ADMIN_POLL_DELAY_US, + ADF_ADMIN_POLL_TIMEOUT_US); + if (ret < 0) { + /* Response timeout */ dev_err(&GET_DEV(accel_dev), "Failed to send admin msg %d to accelerator %d\n", request->cmd_id, ae); + } else { + /* Response received from admin message, we can now + * make response data available in "out" parameter. + */ + memcpy(out, admin->virt_addr + offset + + ADF_ADMINMSG_LEN, ADF_ADMINMSG_LEN); + } mutex_unlock(&admin->lock); - return received ? 0 : -EFAULT; + return ret; } static int adf_send_admin(struct adf_accel_dev *accel_dev, |