diff options
Diffstat (limited to 'drivers/platform/x86/amd/hsmp/hsmp.c')
| -rw-r--r-- | drivers/platform/x86/amd/hsmp/hsmp.c | 41 |
1 files changed, 30 insertions, 11 deletions
diff --git a/drivers/platform/x86/amd/hsmp/hsmp.c b/drivers/platform/x86/amd/hsmp/hsmp.c index a3ac09a90de4..885e2f8136fd 100644 --- a/drivers/platform/x86/amd/hsmp/hsmp.c +++ b/drivers/platform/x86/amd/hsmp/hsmp.c @@ -7,7 +7,7 @@ * This file provides a device implementation for HSMP interface */ -#include <asm/amd_hsmp.h> +#include <asm/amd/hsmp.h> #include <linux/acpi.h> #include <linux/delay.h> @@ -32,8 +32,6 @@ #define HSMP_WR true #define HSMP_RD false -#define DRIVER_VERSION "2.4" - /* * When same message numbers are used for both GET and SET operation, * bit:31 indicates whether its SET or GET operation. @@ -99,7 +97,7 @@ static int __hsmp_send_message(struct hsmp_socket *sock, struct hsmp_message *ms short_sleep = jiffies + msecs_to_jiffies(HSMP_SHORT_SLEEP); timeout = jiffies + msecs_to_jiffies(HSMP_MSG_TIMEOUT); - while (time_before(jiffies, timeout)) { + while (true) { ret = sock->amd_hsmp_rdwr(sock, mbinfo->msg_resp_off, &mbox_status, HSMP_RD); if (ret) { dev_err(sock->dev, "Error %d reading mailbox status\n", ret); @@ -108,6 +106,10 @@ static int __hsmp_send_message(struct hsmp_socket *sock, struct hsmp_message *ms if (mbox_status != HSMP_STATUS_NOT_READY) break; + + if (!time_before(jiffies, timeout)) + break; + if (time_before(jiffies, short_sleep)) usleep_range(50, 100); else @@ -212,13 +214,7 @@ int hsmp_send_message(struct hsmp_message *msg) return -ENODEV; sock = &hsmp_pdev.sock[msg->sock_ind]; - /* - * The time taken by smu operation to complete is between - * 10us to 1ms. Sometime it may take more time. - * In SMP system timeout of 100 millisecs should - * be enough for the previous thread to finish the operation - */ - ret = down_timeout(&sock->hsmp_sem, msecs_to_jiffies(HSMP_MSG_TIMEOUT)); + ret = down_interruptible(&sock->hsmp_sem); if (ret < 0) return ret; @@ -230,6 +226,29 @@ int hsmp_send_message(struct hsmp_message *msg) } EXPORT_SYMBOL_NS_GPL(hsmp_send_message, "AMD_HSMP"); +int hsmp_msg_get_nargs(u16 sock_ind, u32 msg_id, u32 *data, u8 num_args) +{ + struct hsmp_message msg = {}; + unsigned int i; + int ret; + + if (!data) + return -EINVAL; + msg.msg_id = msg_id; + msg.sock_ind = sock_ind; + msg.response_sz = num_args; + + ret = hsmp_send_message(&msg); + if (ret) + return ret; + + for (i = 0; i < num_args; i++) + data[i] = msg.args[i]; + + return 0; +} +EXPORT_SYMBOL_NS_GPL(hsmp_msg_get_nargs, "AMD_HSMP"); + int hsmp_test(u16 sock_ind, u32 value) { struct hsmp_message msg = { 0 }; |