[PATCH v3 29/36] platform/x86: intel_telemetry: Convert to use new SCU IPC API

Mika Westerberg
2020-01-13T13:56:58Z

Convert the Intel Apollo Lake telemetry driver to use the new SCU IPC
API. This allows us to get rid of the duplicate PMC IPC implementation
which is now covered in SCU IPC driver.

Also move telemetry specific IPC message constant to the telemetry
driver where it belongs.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
arch/x86/include/asm/intel_pmc_ipc.h | 1 -
arch/x86/include/asm/intel_telemetry.h | 3 +
drivers/platform/x86/intel_telemetry_pltdrv.c | 101 +++++++++---------
3 files changed, 55 insertions(+), 50 deletions(-)

diff --git a/arch/x86/include/asm/intel_pmc_ipc.h b/arch/x86/include/asm/intel_pmc_ipc.h
index b438a488f613..ddc964b9c78c 100644
--- a/arch/x86/include/asm/intel_pmc_ipc.h
+++ b/arch/x86/include/asm/intel_pmc_ipc.h
@@ -8,7 +8,6 @@
#define PMC_IPC_PHY_CONFIG 0xEE
#define PMC_IPC_NORTHPEAK_CTRL 0xED
#define PMC_IPC_PM_DEBUG 0xEC
-#define PMC_IPC_PMC_TELEMTRY 0xEB
#define PMC_IPC_PMC_FW_MSG_CTRL 0xEA

/* IPC return code */
diff --git a/arch/x86/include/asm/intel_telemetry.h b/arch/x86/include/asm/intel_telemetry.h
index 214394860632..e19deb776003 100644
--- a/arch/x86/include/asm/intel_telemetry.h
+++ b/arch/x86/include/asm/intel_telemetry.h
@@ -10,6 +10,8 @@
#define TELEM_MAX_EVENTS_SRAM 28
#define TELEM_MAX_OS_ALLOCATED_EVENTS 20

+#include <asm/intel_scu_ipc.h>
+
enum telemetry_unit {
TELEM_PSS = 0,
TELEM_IOSS,
@@ -54,6 +56,7 @@ struct telemetry_plt_config {
struct telemetry_unit_config ioss_config;
struct mutex telem_trace_lock;
struct mutex telem_lock;
+ struct intel_scu_ipc_dev *scu;
bool telem_in_use;
};

diff --git a/drivers/platform/x86/intel_telemetry_pltdrv.c b/drivers/platform/x86/intel_telemetry_pltdrv.c
index df8565bad595..d39dde634866 100644
--- a/drivers/platform/x86/intel_telemetry_pltdrv.c
+++ b/drivers/platform/x86/intel_telemetry_pltdrv.c
@@ -15,7 +15,6 @@

#include <asm/cpu_device_id.h>
#include <asm/intel-family.h>
-#include <asm/intel_pmc_ipc.h>
#include <asm/intel_punit_ipc.h>
#include <asm/intel_telemetry.h>

@@ -35,6 +34,7 @@
#define TELEM_SSRAM_STARTTIME_OFFSET 8
#define TELEM_SSRAM_EVTLOG_OFFSET 16

+#define IOSS_TELEM 0xeb
#define IOSS_TELEM_EVENT_READ 0x0
#define IOSS_TELEM_EVENT_WRITE 0x1
#define IOSS_TELEM_INFO_READ 0x2
@@ -42,9 +42,6 @@
#define IOSS_TELEM_TRACE_CTL_WRITE 0x6
#define IOSS_TELEM_EVENT_CTL_READ 0x7
#define IOSS_TELEM_EVENT_CTL_WRITE 0x8
-#define IOSS_TELEM_EVT_CTRL_WRITE_SIZE 0x4
-#define IOSS_TELEM_READ_WORD 0x1
-#define IOSS_TELEM_WRITE_FOURBYTES 0x4
#define IOSS_TELEM_EVT_WRITE_SIZE 0x3

#define TELEM_INFO_SRAMEVTS_MASK 0xFF00
@@ -253,17 +250,14 @@ static int telemetry_check_evtid(enum telemetry_unit telem_unit,
static inline int telemetry_plt_config_ioss_event(u32 evt_id, int index)
{
u32 write_buf;
- int ret;

write_buf = evt_id | TELEM_EVENT_ENABLE;
write_buf <<= BITS_PER_BYTE;
write_buf |= index;

- ret = intel_pmc_ipc_command(PMC_IPC_PMC_TELEMTRY,
- IOSS_TELEM_EVENT_WRITE, (u8 *)&write_buf,
- IOSS_TELEM_EVT_WRITE_SIZE, NULL, 0);
-
- return ret;
+ return intel_scu_ipc_dev_command(telm_conf->scu, IOSS_TELEM,
+ IOSS_TELEM_EVENT_WRITE, &write_buf,
+ IOSS_TELEM_EVT_WRITE_SIZE, NULL, 0);
}

static inline int telemetry_plt_config_pss_event(u32 evt_id, int index)
@@ -281,6 +275,7 @@ static inline int telemetry_plt_config_pss_event(u32 evt_id, int index)
static int telemetry_setup_iossevtconfig(struct telemetry_evtconfig evtconfig,
enum telemetry_action action)
{
+ struct intel_scu_ipc_dev *scu = telm_conf->scu;
u8 num_ioss_evts, ioss_period;
int ret, index, idx;
u32 *ioss_evtmap;
@@ -291,9 +286,9 @@ static int telemetry_setup_iossevtconfig(struct telemetry_evtconfig evtconfig,
ioss_evtmap = evtconfig.evtmap;

/* Get telemetry EVENT CTL */
- ret = intel_pmc_ipc_command(PMC_IPC_PMC_TELEMTRY,
+ ret = intel_scu_ipc_dev_command(scu, IOSS_TELEM,
IOSS_TELEM_EVENT_CTL_READ, NULL, 0,
- &telem_ctrl, IOSS_TELEM_READ_WORD);
+ &telem_ctrl, sizeof(telem_ctrl));
if (ret) {
pr_err("IOSS TELEM_CTRL Read Failed\n");
return ret;
@@ -302,11 +297,9 @@ static int telemetry_setup_iossevtconfig(struct telemetry_evtconfig evtconfig,
/* Disable Telemetry */
TELEM_DISABLE(telem_ctrl);

- ret = intel_pmc_ipc_command(PMC_IPC_PMC_TELEMTRY,
- IOSS_TELEM_EVENT_CTL_WRITE,
- (u8 *)&telem_ctrl,
- IOSS_TELEM_EVT_CTRL_WRITE_SIZE,
- NULL, 0);
+ ret = intel_scu_ipc_dev_command(scu, IOSS_TELEM,
+ IOSS_TELEM_EVENT_CTL_WRITE, &telem_ctrl,
+ sizeof(telem_ctrl), NULL, 0);
if (ret) {
pr_err("IOSS TELEM_CTRL Event Disable Write Failed\n");
return ret;
@@ -318,10 +311,9 @@ static int telemetry_setup_iossevtconfig(struct telemetry_evtconfig evtconfig,
/* Clear All Events */
TELEM_CLEAR_EVENTS(telem_ctrl);

- ret = intel_pmc_ipc_command(PMC_IPC_PMC_TELEMTRY,
+ ret = intel_scu_ipc_dev_command(scu, IOSS_TELEM,
IOSS_TELEM_EVENT_CTL_WRITE,
- (u8 *)&telem_ctrl,
- IOSS_TELEM_EVT_CTRL_WRITE_SIZE,
+ &telem_ctrl, sizeof(telem_ctrl),
NULL, 0);
if (ret) {
pr_err("IOSS TELEM_CTRL Event Disable Write Failed\n");
@@ -347,10 +339,9 @@ static int telemetry_setup_iossevtconfig(struct telemetry_evtconfig evtconfig,
/* Clear All Events */
TELEM_CLEAR_EVENTS(telem_ctrl);

- ret = intel_pmc_ipc_command(PMC_IPC_PMC_TELEMTRY,
+ ret = intel_scu_ipc_dev_command(scu, IOSS_TELEM,
IOSS_TELEM_EVENT_CTL_WRITE,
- (u8 *)&telem_ctrl,
- IOSS_TELEM_EVT_CTRL_WRITE_SIZE,
+ &telem_ctrl, sizeof(telem_ctrl),
NULL, 0);
if (ret) {
pr_err("IOSS TELEM_CTRL Event Disable Write Failed\n");
@@ -399,10 +390,9 @@ static int telemetry_setup_iossevtconfig(struct telemetry_evtconfig evtconfig,
TELEM_ENABLE_PERIODIC(telem_ctrl);
telem_ctrl |= ioss_period;

- ret = intel_pmc_ipc_command(PMC_IPC_PMC_TELEMTRY,
+ ret = intel_scu_ipc_dev_command(scu, IOSS_TELEM,
IOSS_TELEM_EVENT_CTL_WRITE,
- (u8 *)&telem_ctrl,
- IOSS_TELEM_EVT_CTRL_WRITE_SIZE, NULL, 0);
+ &telem_ctrl, sizeof(telem_ctrl), NULL, 0);
if (ret) {
pr_err("IOSS TELEM_CTRL Event Enable Write Failed\n");
return ret;
@@ -589,8 +579,9 @@ static int telemetry_setup(struct platform_device *pdev)
u32 read_buf, events, event_regs;
int ret;

- ret = intel_pmc_ipc_command(PMC_IPC_PMC_TELEMTRY, IOSS_TELEM_INFO_READ,
- NULL, 0, &read_buf, IOSS_TELEM_READ_WORD);
+ ret = intel_scu_ipc_dev_command(telm_conf->scu, IOSS_TELEM,
+ IOSS_TELEM_INFO_READ, NULL, 0,
+ &read_buf, sizeof(read_buf));
if (ret) {
dev_err(&pdev->dev, "IOSS TELEM_INFO Read Failed\n");
return ret;
@@ -684,6 +675,8 @@ static int telemetry_plt_set_sampling_period(u8 pss_period, u8 ioss_period)

mutex_lock(&(telm_conf->telem_lock));
if (ioss_period) {
+ struct intel_scu_ipc_dev *scu = telm_conf->scu;
+
if (TELEM_SAMPLE_PERIOD_INVALID(ioss_period)) {
pr_err("IOSS Sampling Period Out of Range\n");
ret = -EINVAL;
@@ -691,9 +684,9 @@ static int telemetry_plt_set_sampling_period(u8 pss_period, u8 ioss_period)
}

/* Get telemetry EVENT CTL */
- ret = intel_pmc_ipc_command(PMC_IPC_PMC_TELEMTRY,
+ ret = intel_scu_ipc_dev_command(scu, IOSS_TELEM,
IOSS_TELEM_EVENT_CTL_READ, NULL, 0,
- &telem_ctrl, IOSS_TELEM_READ_WORD);
+ &telem_ctrl, sizeof(telem_ctrl));
if (ret) {
pr_err("IOSS TELEM_CTRL Read Failed\n");
goto out;
@@ -702,11 +695,10 @@ static int telemetry_plt_set_sampling_period(u8 pss_period, u8 ioss_period)
/* Disable Telemetry */
TELEM_DISABLE(telem_ctrl);

- ret = intel_pmc_ipc_command(PMC_IPC_PMC_TELEMTRY,
- IOSS_TELEM_EVENT_CTL_WRITE,
- (u8 *)&telem_ctrl,
- IOSS_TELEM_EVT_CTRL_WRITE_SIZE,
- NULL, 0);
+ ret = intel_scu_ipc_dev_command(scu, IOSS_TELEM,
+ IOSS_TELEM_EVENT_CTL_WRITE,
+ &telem_ctrl, sizeof(telem_ctrl),
+ NULL, 0);
if (ret) {
pr_err("IOSS TELEM_CTRL Event Disable Write Failed\n");
goto out;
@@ -718,11 +710,10 @@ static int telemetry_plt_set_sampling_period(u8 pss_period, u8 ioss_period)
TELEM_ENABLE_PERIODIC(telem_ctrl);
telem_ctrl |= ioss_period;

- ret = intel_pmc_ipc_command(PMC_IPC_PMC_TELEMTRY,
- IOSS_TELEM_EVENT_CTL_WRITE,
- (u8 *)&telem_ctrl,
- IOSS_TELEM_EVT_CTRL_WRITE_SIZE,
- NULL, 0);
+ ret = intel_scu_ipc_dev_command(scu, IOSS_TELEM,
+ IOSS_TELEM_EVENT_CTL_WRITE,
+ &telem_ctrl, sizeof(telem_ctrl),
+ NULL, 0);
if (ret) {
pr_err("IOSS TELEM_CTRL Event Enable Write Failed\n");
goto out;
@@ -1017,9 +1008,9 @@ static int telemetry_plt_get_trace_verbosity(enum telemetry_unit telem_unit,
break;

case TELEM_IOSS:
- ret = intel_pmc_ipc_command(PMC_IPC_PMC_TELEMTRY,
- IOSS_TELEM_TRACE_CTL_READ, NULL, 0, &temp,
- IOSS_TELEM_READ_WORD);
+ ret = intel_scu_ipc_dev_command(telm_conf->scu,
+ IOSS_TELEM, IOSS_TELEM_TRACE_CTL_READ,
+ NULL, 0, &temp, sizeof(temp));
if (ret) {
pr_err("IOSS TRACE_CTL Read Failed\n");
goto out;
@@ -1071,9 +1062,9 @@ static int telemetry_plt_set_trace_verbosity(enum telemetry_unit telem_unit,
break;

case TELEM_IOSS:
- ret = intel_pmc_ipc_command(PMC_IPC_PMC_TELEMTRY,
- IOSS_TELEM_TRACE_CTL_READ, NULL, 0, &temp,
- IOSS_TELEM_READ_WORD);
+ ret = intel_scu_ipc_dev_command(telm_conf->scu, IOSS_TELEM,
+ IOSS_TELEM_TRACE_CTL_READ,
+ NULL, 0, &temp, sizeof(temp));
if (ret) {
pr_err("IOSS TRACE_CTL Read Failed\n");
goto out;
@@ -1082,9 +1073,9 @@ static int telemetry_plt_set_trace_verbosity(enum telemetry_unit telem_unit,
TELEM_CLEAR_VERBOSITY_BITS(temp);
TELEM_SET_VERBOSITY_BITS(temp, verbosity);

- ret = intel_pmc_ipc_command(PMC_IPC_PMC_TELEMTRY,
- IOSS_TELEM_TRACE_CTL_WRITE, (u8 *)&temp,
- IOSS_TELEM_WRITE_FOURBYTES, NULL, 0);
+ ret = intel_scu_ipc_dev_command(telm_conf->scu, IOSS_TELEM,
+ IOSS_TELEM_TRACE_CTL_WRITE,
+ &temp, sizeof(temp), NULL, 0);
if (ret) {
pr_err("IOSS TRACE_CTL Verbosity Set Failed\n");
goto out;
@@ -1172,6 +1163,12 @@ static int telemetry_pltdrv_probe(struct platform_device *pdev)
goto out;
}

+ telm_conf->scu = intel_scu_ipc_dev_get();
+ if (!telm_conf->scu) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
mutex_init(&telm_conf->telem_lock);
mutex_init(&telm_conf->telem_trace_lock);

@@ -1196,6 +1193,10 @@ static int telemetry_pltdrv_probe(struct platform_device *pdev)
iounmap(telm_conf->pss_config.regmap);
if (telm_conf->ioss_config.regmap)
iounmap(telm_conf->ioss_config.regmap);
+ if (telm_conf->scu) {
+ intel_scu_ipc_dev_put(telm_conf->scu);
+ telm_conf->scu = NULL;
+ }
dev_err(&pdev->dev, "TELEMETRY Setup Failed.\n");

return ret;
@@ -1204,6 +1205,8 @@ static int telemetry_pltdrv_probe(struct platform_device *pdev)
static int telemetry_pltdrv_remove(struct platform_device *pdev)
{
telemetry_clear_pltdata();
+ intel_scu_ipc_dev_put(telm_conf->scu);
+ telm_conf->scu = NULL;
iounmap(telm_conf->pss_config.regmap);
iounmap(telm_conf->ioss_config.regmap);

--
2.24.1