Re: [RFC v5 6/8] platform/x86: intel_punit_ipc: Use generic intel ipc device calls
From: sathyanarayanan kuppuswamy
Date: Tue Oct 10 2017 - 18:29:22 EST
On 10/08/2017 10:07 PM, Chakravarty, Souvik K wrote:
From: sathyanarayanan.kuppuswamy@xxxxxxxxxxxxxxx
[mailto:sathyanarayanan.kuppuswamy@xxxxxxxxxxxxxxx]
Sent: Sunday, October 8, 2017 3:50 AM
To: a.zummo@xxxxxxxxxxxx; x86@xxxxxxxxxx; wim@xxxxxxxxx;
mingo@xxxxxxxxxx; alexandre.belloni@xxxxxxxxxxxxxxxxxx; Zha, Qipeng
<qipeng.zha@xxxxxxxxx>; hpa@xxxxxxxxx; dvhart@xxxxxxxxxxxxx;
tglx@xxxxxxxxxxxxx; lee.jones@xxxxxxxxxx; andy@xxxxxxxxxxxxx; Chakravarty,
Souvik K <souvik.k.chakravarty@xxxxxxxxx>
Cc: linux-rtc@xxxxxxxxxxxxxxx; linux-watchdog@xxxxxxxxxxxxxxx; linux-
kernel@xxxxxxxxxxxxxxx; platform-driver-x86@xxxxxxxxxxxxxxx;
sathyaosid@xxxxxxxxx; Kuppuswamy Sathyanarayanan
<sathyanarayanan.kuppuswamy@xxxxxxxxxxxxxxx>
Subject: [RFC v5 6/8] platform/x86: intel_punit_ipc: Use generic intel ipc
device calls
From: Kuppuswamy Sathyanarayanan
<sathyanarayanan.kuppuswamy@xxxxxxxxxxxxxxx>
Removed redundant IPC helper functions and refactored the driver to use
APIs provided by generic IPC driver. This patch also cleans-up PUNIT IPC user
drivers(intel_telemetry_pltdrv.c) to use APIs provided by generic IPC driver.
Signed-off-by: Kuppuswamy Sathyanarayanan
<sathyanarayanan.kuppuswamy@xxxxxxxxxxxxxxx>
---
arch/x86/include/asm/intel_punit_ipc.h | 125 +++++------
drivers/platform/x86/Kconfig | 1 +
drivers/platform/x86/intel_punit_ipc.c | 303 ++++++++++----------------
drivers/platform/x86/intel_telemetry_pltdrv.c | 97 +++++----
4 files changed, 223 insertions(+), 303 deletions(-)
Changes since v4:
* None
Changes since v2:
* Added unique name to PUNIT BIOS, GTD, & ISP regmaps.
* Added intel_ipc_dev_put() support.
Changes since v1:
* Removed custom APIs.
* Cleaned up PUNIT IPC user drivers to use APIs provided by generic
IPC driver.
diff --git a/arch/x86/include/asm/intel_punit_ipc.h
b/arch/x86/include/asm/intel_punit_ipc.h
index 201eb9d..cf1630c 100644
--- a/arch/x86/include/asm/intel_punit_ipc.h
+++ b/arch/x86/include/asm/intel_punit_ipc.h
@@ -1,10 +1,8 @@
#ifndef _ASM_X86_INTEL_PUNIT_IPC_H_
#define _ASM_X86_INTEL_PUNIT_IPC_H_
-/*
- * Three types of 8bit P-Unit IPC commands are supported,
- * bit[7:6]: [00]: BIOS; [01]: GTD; [10]: ISPD.
- */
+#include <linux/platform_data/x86/intel_ipc_dev.h>
+
typedef enum {
BIOS_IPC = 0,
GTDRIVER_IPC,
@@ -12,61 +10,60 @@ typedef enum {
RESERVED_IPC,
} IPC_TYPE;
-#define IPC_TYPE_OFFSET 6
-#define IPC_PUNIT_BIOS_CMD_BASE (BIOS_IPC <<
IPC_TYPE_OFFSET)
-#define IPC_PUNIT_GTD_CMD_BASE (GTDDRIVER_IPC <<
IPC_TYPE_OFFSET)
-#define IPC_PUNIT_ISPD_CMD_BASE (ISPDRIVER_IPC <<
IPC_TYPE_OFFSET)
-#define IPC_PUNIT_CMD_TYPE_MASK (RESERVED_IPC <<
IPC_TYPE_OFFSET)
+#define PUNIT_BIOS_IPC_DEV "punit_bios_ipc"
+#define PUNIT_GTD_IPC_DEV "punit_gtd_ipc"
+#define PUNIT_ISP_IPC_DEV "punit_isp_ipc"
+#define PUNIT_PARAM_LEN 3
/* BIOS => Pcode commands */
-#define IPC_PUNIT_BIOS_ZERO (IPC_PUNIT_BIOS_CMD_BASE
| 0x00)
-#define IPC_PUNIT_BIOS_VR_INTERFACE
(IPC_PUNIT_BIOS_CMD_BASE | 0x01)
-#define IPC_PUNIT_BIOS_READ_PCS
(IPC_PUNIT_BIOS_CMD_BASE | 0x02)
-#define IPC_PUNIT_BIOS_WRITE_PCS (IPC_PUNIT_BIOS_CMD_BASE
| 0x03)
-#define IPC_PUNIT_BIOS_READ_PCU_CONFIG
(IPC_PUNIT_BIOS_CMD_BASE | 0x04)
-#define IPC_PUNIT_BIOS_WRITE_PCU_CONFIG
(IPC_PUNIT_BIOS_CMD_BASE | 0x05)
-#define IPC_PUNIT_BIOS_READ_PL1_SETTING
(IPC_PUNIT_BIOS_CMD_BASE | 0x06)
-#define IPC_PUNIT_BIOS_WRITE_PL1_SETTING (IPC_PUNIT_BIOS_CMD_BASE
| 0x07)
-#define IPC_PUNIT_BIOS_TRIGGER_VDD_RAM
(IPC_PUNIT_BIOS_CMD_BASE | 0x08)
-#define IPC_PUNIT_BIOS_READ_TELE_INFO
(IPC_PUNIT_BIOS_CMD_BASE | 0x09)
-#define IPC_PUNIT_BIOS_READ_TELE_TRACE_CTRL
(IPC_PUNIT_BIOS_CMD_BASE | 0x0a)
-#define IPC_PUNIT_BIOS_WRITE_TELE_TRACE_CTRL
(IPC_PUNIT_BIOS_CMD_BASE | 0x0b)
-#define IPC_PUNIT_BIOS_READ_TELE_EVENT_CTRL
(IPC_PUNIT_BIOS_CMD_BASE | 0x0c)
-#define IPC_PUNIT_BIOS_WRITE_TELE_EVENT_CTRL
(IPC_PUNIT_BIOS_CMD_BASE | 0x0d)
-#define IPC_PUNIT_BIOS_READ_TELE_TRACE
(IPC_PUNIT_BIOS_CMD_BASE | 0x0e)
-#define IPC_PUNIT_BIOS_WRITE_TELE_TRACE
(IPC_PUNIT_BIOS_CMD_BASE | 0x0f)
-#define IPC_PUNIT_BIOS_READ_TELE_EVENT
(IPC_PUNIT_BIOS_CMD_BASE | 0x10)
-#define IPC_PUNIT_BIOS_WRITE_TELE_EVENT
(IPC_PUNIT_BIOS_CMD_BASE | 0x11)
-#define IPC_PUNIT_BIOS_READ_MODULE_TEMP
(IPC_PUNIT_BIOS_CMD_BASE | 0x12)
-#define IPC_PUNIT_BIOS_RESERVED
(IPC_PUNIT_BIOS_CMD_BASE | 0x13)
-#define IPC_PUNIT_BIOS_READ_VOLTAGE_OVER
(IPC_PUNIT_BIOS_CMD_BASE | 0x14)
-#define IPC_PUNIT_BIOS_WRITE_VOLTAGE_OVER
(IPC_PUNIT_BIOS_CMD_BASE | 0x15)
-#define IPC_PUNIT_BIOS_READ_RATIO_OVER
(IPC_PUNIT_BIOS_CMD_BASE | 0x16)
-#define IPC_PUNIT_BIOS_WRITE_RATIO_OVER
(IPC_PUNIT_BIOS_CMD_BASE | 0x17)
-#define IPC_PUNIT_BIOS_READ_VF_GL_CTRL
(IPC_PUNIT_BIOS_CMD_BASE | 0x18)
-#define IPC_PUNIT_BIOS_WRITE_VF_GL_CTRL
(IPC_PUNIT_BIOS_CMD_BASE | 0x19)
-#define IPC_PUNIT_BIOS_READ_FM_SOC_TEMP_THRESH
(IPC_PUNIT_BIOS_CMD_BASE | 0x1a)
-#define IPC_PUNIT_BIOS_WRITE_FM_SOC_TEMP_THRESH
(IPC_PUNIT_BIOS_CMD_BASE | 0x1b)
+#define IPC_PUNIT_BIOS_ZERO (0x00)
+#define IPC_PUNIT_BIOS_VR_INTERFACE (0x01)
+#define IPC_PUNIT_BIOS_READ_PCS (0x02)
+#define IPC_PUNIT_BIOS_WRITE_PCS (0x03)
+#define IPC_PUNIT_BIOS_READ_PCU_CONFIG (0x04)
+#define IPC_PUNIT_BIOS_WRITE_PCU_CONFIG (0x05)
+#define IPC_PUNIT_BIOS_READ_PL1_SETTING (0x06)
+#define IPC_PUNIT_BIOS_WRITE_PL1_SETTING (0x07)
+#define IPC_PUNIT_BIOS_TRIGGER_VDD_RAM (0x08)
+#define IPC_PUNIT_BIOS_READ_TELE_INFO (0x09)
+#define IPC_PUNIT_BIOS_READ_TELE_TRACE_CTRL (0x0a)
+#define IPC_PUNIT_BIOS_WRITE_TELE_TRACE_CTRL (0x0b)
+#define IPC_PUNIT_BIOS_READ_TELE_EVENT_CTRL (0x0c)
+#define IPC_PUNIT_BIOS_WRITE_TELE_EVENT_CTRL (0x0d)
+#define IPC_PUNIT_BIOS_READ_TELE_TRACE (0x0e)
+#define IPC_PUNIT_BIOS_WRITE_TELE_TRACE (0x0f)
+#define IPC_PUNIT_BIOS_READ_TELE_EVENT (0x10)
+#define IPC_PUNIT_BIOS_WRITE_TELE_EVENT (0x11)
+#define IPC_PUNIT_BIOS_READ_MODULE_TEMP (0x12)
+#define IPC_PUNIT_BIOS_RESERVED (0x13)
+#define IPC_PUNIT_BIOS_READ_VOLTAGE_OVER (0x14)
+#define IPC_PUNIT_BIOS_WRITE_VOLTAGE_OVER (0x15)
+#define IPC_PUNIT_BIOS_READ_RATIO_OVER (0x16)
+#define IPC_PUNIT_BIOS_WRITE_RATIO_OVER (0x17)
+#define IPC_PUNIT_BIOS_READ_VF_GL_CTRL (0x18)
+#define IPC_PUNIT_BIOS_WRITE_VF_GL_CTRL (0x19)
+#define IPC_PUNIT_BIOS_READ_FM_SOC_TEMP_THRESH (0x1a)
+#define IPC_PUNIT_BIOS_WRITE_FM_SOC_TEMP_THRESH (0x1b)
/* GT Driver => Pcode commands */
-#define IPC_PUNIT_GTD_ZERO (IPC_PUNIT_GTD_CMD_BASE
| 0x00)
-#define IPC_PUNIT_GTD_CONFIG
(IPC_PUNIT_GTD_CMD_BASE | 0x01)
-#define IPC_PUNIT_GTD_READ_ICCP_LIC_CDYN_SCAL
(IPC_PUNIT_GTD_CMD_BASE | 0x02)
-#define IPC_PUNIT_GTD_WRITE_ICCP_LIC_CDYN_SCAL
(IPC_PUNIT_GTD_CMD_BASE | 0x03)
-#define IPC_PUNIT_GTD_GET_WM_VAL
(IPC_PUNIT_GTD_CMD_BASE | 0x06)
-#define IPC_PUNIT_GTD_WRITE_CONFIG_WISHREQ
(IPC_PUNIT_GTD_CMD_BASE | 0x07)
-#define IPC_PUNIT_GTD_READ_REQ_DUTY_CYCLE
(IPC_PUNIT_GTD_CMD_BASE | 0x16)
-#define IPC_PUNIT_GTD_DIS_VOL_FREQ_CHG_REQUEST
(IPC_PUNIT_GTD_CMD_BASE | 0x17)
-#define IPC_PUNIT_GTD_DYNA_DUTY_CYCLE_CTRL
(IPC_PUNIT_GTD_CMD_BASE | 0x1a)
-#define IPC_PUNIT_GTD_DYNA_DUTY_CYCLE_TUNING
(IPC_PUNIT_GTD_CMD_BASE | 0x1c)
+#define IPC_PUNIT_GTD_ZERO (0x00)
+#define IPC_PUNIT_GTD_CONFIG (0x01)
+#define IPC_PUNIT_GTD_READ_ICCP_LIC_CDYN_SCAL (0x02)
+#define IPC_PUNIT_GTD_WRITE_ICCP_LIC_CDYN_SCAL (0x03)
+#define IPC_PUNIT_GTD_GET_WM_VAL (0x06)
+#define IPC_PUNIT_GTD_WRITE_CONFIG_WISHREQ (0x07)
+#define IPC_PUNIT_GTD_READ_REQ_DUTY_CYCLE (0x16)
+#define IPC_PUNIT_GTD_DIS_VOL_FREQ_CHG_REQUEST (0x17)
+#define IPC_PUNIT_GTD_DYNA_DUTY_CYCLE_CTRL (0x1a)
+#define IPC_PUNIT_GTD_DYNA_DUTY_CYCLE_TUNING (0x1c)
/* ISP Driver => Pcode commands */
-#define IPC_PUNIT_ISPD_ZERO (IPC_PUNIT_ISPD_CMD_BASE
| 0x00)
-#define IPC_PUNIT_ISPD_CONFIG
(IPC_PUNIT_ISPD_CMD_BASE | 0x01)
-#define IPC_PUNIT_ISPD_GET_ISP_LTR_VAL
(IPC_PUNIT_ISPD_CMD_BASE | 0x02)
-#define IPC_PUNIT_ISPD_ACCESS_IU_FREQ_BOUNDS
(IPC_PUNIT_ISPD_CMD_BASE | 0x03)
-#define IPC_PUNIT_ISPD_READ_CDYN_LEVEL
(IPC_PUNIT_ISPD_CMD_BASE | 0x04)
-#define IPC_PUNIT_ISPD_WRITE_CDYN_LEVEL
(IPC_PUNIT_ISPD_CMD_BASE | 0x05)
+#define IPC_PUNIT_ISPD_ZERO (0x00)
+#define IPC_PUNIT_ISPD_CONFIG (0x01)
+#define IPC_PUNIT_ISPD_GET_ISP_LTR_VAL (0x02)
+#define IPC_PUNIT_ISPD_ACCESS_IU_FREQ_BOUNDS (0x03)
+#define IPC_PUNIT_ISPD_READ_CDYN_LEVEL (0x04)
+#define IPC_PUNIT_ISPD_WRITE_CDYN_LEVEL (0x05)
/* Error codes */
#define IPC_PUNIT_ERR_SUCCESS 0
@@ -77,25 +74,11 @@ typedef enum {
#define IPC_PUNIT_ERR_INVALID_VR_ID 5
#define IPC_PUNIT_ERR_VR_ERR 6
-#if IS_ENABLED(CONFIG_INTEL_PUNIT_IPC)
-
-int intel_punit_ipc_simple_command(int cmd, int para1, int para2); -int
intel_punit_ipc_command(u32 cmd, u32 para1, u32 para2, u32 *in, u32
*out);
-
-#else
-
-static inline int intel_punit_ipc_simple_command(int cmd,
- int para1, int para2)
+static inline void punit_cmd_init(u32 *cmd, u32 param1, u32 param2, u32
+param3)
{
- return -ENODEV;
+ cmd[0] = param1;
+ cmd[1] = param2;
+ cmd[2] = param3;
}
-static inline int intel_punit_ipc_command(u32 cmd, u32 para1, u32 para2,
- u32 *in, u32 *out)
-{
- return -ENODEV;
-}
-
-#endif /* CONFIG_INTEL_PUNIT_IPC */
-
#endif
diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig
index 724ee696..9442c23 100644
--- a/drivers/platform/x86/Kconfig
+++ b/drivers/platform/x86/Kconfig
@@ -1096,6 +1096,7 @@ config SURFACE_3_BUTTON
config INTEL_PUNIT_IPC
tristate "Intel P-Unit IPC Driver"
+ select REGMAP_MMIO
---help---
This driver provides support for Intel P-Unit Mailbox IPC
mechanism,
which is used to bridge the communications between kernel and P-
Unit.
diff --git a/drivers/platform/x86/intel_punit_ipc.c
b/drivers/platform/x86/intel_punit_ipc.c
index b5b8901..f310a05 100644
--- a/drivers/platform/x86/intel_punit_ipc.c
+++ b/drivers/platform/x86/intel_punit_ipc.c
@@ -18,18 +18,18 @@
#include <linux/device.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
+#include <linux/platform_data/x86/intel_ipc_dev.h>
+#include <linux/regmap.h>
#include <asm/intel_punit_ipc.h>
-/* IPC Mailbox registers */
-#define OFFSET_DATA_LOW 0x0
-#define OFFSET_DATA_HIGH 0x4
/* bit field of interface register */
#define CMD_RUN BIT(31)
-#define CMD_ERRCODE_MASK GENMASK(7, 0)
+#define CMD_ERRCODE_MASK GENMASK(7, 0)
#define CMD_PARA1_SHIFT 8
#define CMD_PARA2_SHIFT 16
-#define CMD_TIMEOUT_SECONDS 1
+/* IPC PUNIT commands */
+#define IPC_DEV_PUNIT_CMD_STATUS_ERR_MASK GENMASK(7,
0)
enum {
BASE_DATA = 0,
@@ -39,187 +39,42 @@ enum {
typedef struct {
struct device *dev;
- struct mutex lock;
- int irq;
- struct completion cmd_complete;
/* base of interface and data registers */
void __iomem *base[RESERVED_IPC][BASE_MAX];
+ struct intel_ipc_dev *ipc_dev[RESERVED_IPC];
IPC_TYPE type;
} IPC_DEV;
static IPC_DEV *punit_ipcdev;
-static inline u32 ipc_read_status(IPC_DEV *ipcdev, IPC_TYPE type) -{
- return readl(ipcdev->base[type][BASE_IFACE]);
-}
-
-static inline void ipc_write_cmd(IPC_DEV *ipcdev, IPC_TYPE type, u32 cmd) -
{
- writel(cmd, ipcdev->base[type][BASE_IFACE]);
-}
-
-static inline u32 ipc_read_data_low(IPC_DEV *ipcdev, IPC_TYPE type) -{
- return readl(ipcdev->base[type][BASE_DATA] + OFFSET_DATA_LOW);
-}
-
-static inline u32 ipc_read_data_high(IPC_DEV *ipcdev, IPC_TYPE type) -{
- return readl(ipcdev->base[type][BASE_DATA] + OFFSET_DATA_HIGH);
-}
-
-static inline void ipc_write_data_low(IPC_DEV *ipcdev, IPC_TYPE type, u32
data) -{
- writel(data, ipcdev->base[type][BASE_DATA] + OFFSET_DATA_LOW);
-}
-
-static inline void ipc_write_data_high(IPC_DEV *ipcdev, IPC_TYPE type, u32
data) -{
- writel(data, ipcdev->base[type][BASE_DATA] + OFFSET_DATA_HIGH);
-}
+const char *ipc_dev_name[RESERVED_IPC] = {
+ PUNIT_BIOS_IPC_DEV,
+ PUNIT_GTD_IPC_DEV,
+ PUNIT_ISP_IPC_DEV
+};
-static const char *ipc_err_string(int error) -{
- if (error == IPC_PUNIT_ERR_SUCCESS)
- return "no error";
- else if (error == IPC_PUNIT_ERR_INVALID_CMD)
- return "invalid command";
- else if (error == IPC_PUNIT_ERR_INVALID_PARAMETER)
- return "invalid parameter";
- else if (error == IPC_PUNIT_ERR_CMD_TIMEOUT)
- return "command timeout";
- else if (error == IPC_PUNIT_ERR_CMD_LOCKED)
- return "command locked";
- else if (error == IPC_PUNIT_ERR_INVALID_VR_ID)
- return "invalid vr id";
- else if (error == IPC_PUNIT_ERR_VR_ERR)
- return "vr error";
- else
- return "unknown error";
-}
+static struct regmap_config punit_regmap_config = {
+ .reg_bits = 32,
+ .reg_stride = 4,
+ .val_bits = 32,
+};
-static int intel_punit_ipc_check_status(IPC_DEV *ipcdev, IPC_TYPE type)
+int pre_simple_cmd_fn(u32 *cmd_list, u32 cmdlen)
{
- int loops = CMD_TIMEOUT_SECONDS * USEC_PER_SEC;
- int errcode;
- int status;
-
- if (ipcdev->irq) {
- if (!wait_for_completion_timeout(&ipcdev->cmd_complete,
- CMD_TIMEOUT_SECONDS *
HZ)) {
- dev_err(ipcdev->dev, "IPC timed out\n");
- return -ETIMEDOUT;
- }
- } else {
- while ((ipc_read_status(ipcdev, type) & CMD_RUN) && --
loops)
- udelay(1);
- if (!loops) {
- dev_err(ipcdev->dev, "IPC timed out\n");
- return -ETIMEDOUT;
- }
- }
+ if (!cmd_list || cmdlen != PUNIT_PARAM_LEN)
+ return -EINVAL;
- status = ipc_read_status(ipcdev, type);
- errcode = status & CMD_ERRCODE_MASK;
- if (errcode) {
- dev_err(ipcdev->dev, "IPC failed: %s, IPC_STS=0x%x\n",
- ipc_err_string(errcode), status);
- return -EIO;
- }
+ cmd_list[0] |= CMD_RUN | cmd_list[1] << CMD_PARA1_SHIFT |
+ cmd_list[2] << CMD_PARA1_SHIFT;
return 0;
}
-/**
- * intel_punit_ipc_simple_command() - Simple IPC command
- * @cmd: IPC command code.
- * @para1: First 8bit parameter, set 0 if not used.
- * @para2: Second 8bit parameter, set 0 if not used.
- *
- * Send a IPC command to P-Unit when there is no data transaction
- *
- * Return: IPC error code or 0 on success.
- */
-int intel_punit_ipc_simple_command(int cmd, int para1, int para2) -{
- IPC_DEV *ipcdev = punit_ipcdev;
- IPC_TYPE type;
- u32 val;
- int ret;
-
- mutex_lock(&ipcdev->lock);
-
- reinit_completion(&ipcdev->cmd_complete);
- type = (cmd & IPC_PUNIT_CMD_TYPE_MASK) >> IPC_TYPE_OFFSET;
-
- val = cmd & ~IPC_PUNIT_CMD_TYPE_MASK;
- val |= CMD_RUN | para2 << CMD_PARA2_SHIFT | para1 <<
CMD_PARA1_SHIFT;
- ipc_write_cmd(ipcdev, type, val);
- ret = intel_punit_ipc_check_status(ipcdev, type);
-
- mutex_unlock(&ipcdev->lock);
-
- return ret;
-}
-EXPORT_SYMBOL(intel_punit_ipc_simple_command);
-
-/**
- * intel_punit_ipc_command() - IPC command with data and pointers
- * @cmd: IPC command code.
- * @para1: First 8bit parameter, set 0 if not used.
- * @para2: Second 8bit parameter, set 0 if not used.
- * @in: Input data, 32bit for BIOS cmd, two 32bit for GTD
and ISPD.
- * @out: Output data.
- *
- * Send a IPC command to P-Unit with data transaction
- *
- * Return: IPC error code or 0 on success.
- */
-int intel_punit_ipc_command(u32 cmd, u32 para1, u32 para2, u32 *in, u32
*out) -{
- IPC_DEV *ipcdev = punit_ipcdev;
- IPC_TYPE type;
- u32 val;
- int ret;
-
- mutex_lock(&ipcdev->lock);
-
- reinit_completion(&ipcdev->cmd_complete);
- type = (cmd & IPC_PUNIT_CMD_TYPE_MASK) >> IPC_TYPE_OFFSET;
-
- if (in) {
- ipc_write_data_low(ipcdev, type, *in);
- if (type == GTDRIVER_IPC || type == ISPDRIVER_IPC)
- ipc_write_data_high(ipcdev, type, *++in);
- }
-
- val = cmd & ~IPC_PUNIT_CMD_TYPE_MASK;
- val |= CMD_RUN | para2 << CMD_PARA2_SHIFT | para1 <<
CMD_PARA1_SHIFT;
- ipc_write_cmd(ipcdev, type, val);
-
- ret = intel_punit_ipc_check_status(ipcdev, type);
- if (ret)
- goto out;
-
- if (out) {
- *out = ipc_read_data_low(ipcdev, type);
- if (type == GTDRIVER_IPC || type == ISPDRIVER_IPC)
- *++out = ipc_read_data_high(ipcdev, type);
- }
-
-out:
- mutex_unlock(&ipcdev->lock);
- return ret;
-}
-EXPORT_SYMBOL_GPL(intel_punit_ipc_command);
-
-static irqreturn_t intel_punit_ioc(int irq, void *dev_id)
+/* Input data, 32bit for BIOS cmd, two 32bit for GTD and ISPD. */ int
+pre_raw_cmd_fn(u32 *cmd_list, u32 cmdlen, u8 *in, u32 inlen, u32 *out,
+ u32 outlen, u32 dptr, u32 sptr)
{
- IPC_DEV *ipcdev = dev_id;
-
- complete(&ipcdev->cmd_complete);
- return IRQ_HANDLED;
+ return pre_simple_cmd_fn(cmd_list, cmdlen);
}
static int intel_punit_get_bars(struct platform_device *pdev) @@ -282,9
+137,77 @@ static int intel_punit_get_bars(struct platform_device *pdev)
return 0;
}
+static int punit_ipc_err_code(int status) {
+ return (status & CMD_ERRCODE_MASK);
+}
+
+static int punit_ipc_busy_check(int status) {
+ return status | CMD_RUN;
+}
+
+static struct intel_ipc_dev *intel_punit_ipc_dev_create(struct device *dev,
+ const char *devname,
+ int irq,
+ void __iomem *base,
+ void __iomem *data)
+{
+ struct intel_ipc_dev_ops *ops;
+ struct intel_ipc_dev_cfg *cfg;
+ struct regmap *cmd_regs, *data_regs;
+
+ cfg = devm_kzalloc(dev, sizeof(*cfg), GFP_KERNEL);
+ if (!cfg)
+ return ERR_PTR(-ENOMEM);
+
+ ops = devm_kzalloc(dev, sizeof(*ops), GFP_KERNEL);
+ if (!ops)
+ return ERR_PTR(-ENOMEM);
+
+ punit_regmap_config.name = devm_kasprintf(dev, GFP_KERNEL,
"%s_%s",
+ devname, "base");
+
+ cmd_regs = devm_regmap_init_mmio_clk(dev, NULL, base,
+ &punit_regmap_config);
+ if (IS_ERR(cmd_regs)) {
+ dev_err(dev, "cmd_regs regmap init failed\n");
+ return ERR_CAST(cmd_regs);;
+ }
+
+ punit_regmap_config.name = devm_kasprintf(dev, GFP_KERNEL,
"%s_%s",
+ devname, "data");
+
+ data_regs = devm_regmap_init_mmio_clk(dev, NULL, data,
+ &punit_regmap_config);
+ if (IS_ERR(data_regs)) {
+ dev_err(dev, "data_regs regmap init failed\n");
+ return ERR_CAST(data_regs);;
+ }
+
+ /* set IPC dev ops */
+ ops->to_err_code = punit_ipc_err_code;
+ ops->busy_check = punit_ipc_busy_check;
+ ops->pre_simple_cmd_fn = pre_simple_cmd_fn;
+ ops->pre_raw_cmd_fn = pre_raw_cmd_fn;
+
+ if (irq > 0)
+ cfg->mode = IPC_DEV_MODE_IRQ;
+ else
+ cfg->mode = IPC_DEV_MODE_POLLING;
+
+ cfg->chan_type = IPC_CHANNEL_IA_PUNIT;
+ cfg->irq = irq;
+ cfg->irqflags = IRQF_NO_SUSPEND | IRQF_SHARED;
+ cfg->cmd_regs = cmd_regs;
+ cfg->data_regs = data_regs;
+
+ return devm_intel_ipc_dev_create(dev, devname, cfg, ops); }
+
static int intel_punit_ipc_probe(struct platform_device *pdev) {
- int irq, ret;
+ int irq, ret, i;
punit_ipcdev = devm_kzalloc(&pdev->dev,
sizeof(*punit_ipcdev), GFP_KERNEL); @@ -
294,35 +217,30 @@ static int intel_punit_ipc_probe(struct platform_device
*pdev)
platform_set_drvdata(pdev, punit_ipcdev);
irq = platform_get_irq(pdev, 0);
- if (irq < 0) {
- punit_ipcdev->irq = 0;
- dev_warn(&pdev->dev, "Invalid IRQ, using polling mode\n");
- } else {
- ret = devm_request_irq(&pdev->dev, irq, intel_punit_ioc,
- IRQF_NO_SUSPEND, "intel_punit_ipc",
- &punit_ipcdev);
- if (ret) {
- dev_err(&pdev->dev, "Failed to request irq: %d\n",
irq);
- return ret;
- }
- punit_ipcdev->irq = irq;
- }
ret = intel_punit_get_bars(pdev);
if (ret)
- goto out;
+ return ret;
+
+ for (i = 0; i < RESERVED_IPC; i++) {
+ punit_ipcdev->ipc_dev[i] = intel_punit_ipc_dev_create(
+ &pdev->dev,
+ ipc_dev_name[i],
+ irq,
+ punit_ipcdev->base[i][BASE_IFACE],
+ punit_ipcdev->base[i][BASE_DATA]);
+
+ if (IS_ERR(punit_ipcdev->ipc_dev[i])) {
+ dev_err(&pdev->dev, "%s create failed\n",
+ ipc_dev_name[i]);
+ return PTR_ERR(punit_ipcdev->ipc_dev[i]);
+ }
+ }
punit_ipcdev->dev = &pdev->dev;
- mutex_init(&punit_ipcdev->lock);
- init_completion(&punit_ipcdev->cmd_complete);
-out:
return ret;
-}
-static int intel_punit_ipc_remove(struct platform_device *pdev) -{
- return 0;
}
static const struct acpi_device_id punit_ipc_acpi_ids[] = { @@ -332,7 +250,6
@@ static const struct acpi_device_id punit_ipc_acpi_ids[] = {
static struct platform_driver intel_punit_ipc_driver = {
.probe = intel_punit_ipc_probe,
- .remove = intel_punit_ipc_remove,
.driver = {
.name = "intel_punit_ipc",
.acpi_match_table = ACPI_PTR(punit_ipc_acpi_ids), diff --git
a/drivers/platform/x86/intel_telemetry_pltdrv.c
b/drivers/platform/x86/intel_telemetry_pltdrv.c
index e0424d5..bf8284a 100644
--- a/drivers/platform/x86/intel_telemetry_pltdrv.c
+++ b/drivers/platform/x86/intel_telemetry_pltdrv.c
This is a logical separation and so should be a different patch.
But if we split it into two different patches then it will break the
bisect-ability of these patches.
@@ -98,6 +98,7 @@ struct telem_ssram_region { };
static struct telemetry_plt_config *telm_conf;
+static struct intel_ipc_dev *punit_bios_ipc_dev;
Simply punit_ipc_dev is good enough.
There are three PUNIT IPC devices. So to differentiate between them I
added extra string to it.
/*
* The following counters are programmed by default during setup.
@@ -127,7 +128,6 @@ static struct telemetry_evtmap
{"PMC_S0IX_BLOCK_IPS_CLOCKS", 0x600B},
};
-
static struct telemetry_evtmap
telemetry_apl_pss_default_events[TELEM_MAX_OS_ALLOCATED_EVE
NTS] = {
{"IA_CORE0_C6_RES", 0x0400},
@@ -283,13 +283,12 @@ static inline int
telemetry_plt_config_ioss_event(u32 evt_id, int index) static inline int
telemetry_plt_config_pss_event(u32 evt_id, int index) {
u32 write_buf;
- int ret;
+ u32 cmd[PUNIT_PARAM_LEN] = {0};
write_buf = evt_id | TELEM_EVENT_ENABLE;
- ret =
intel_punit_ipc_command(IPC_PUNIT_BIOS_WRITE_TELE_EVENT,
- index, 0, &write_buf, NULL);
-
- return ret;
+ punit_cmd_init(cmd, IPC_PUNIT_BIOS_WRITE_TELE_EVENT, index, 0);
+ return ipc_dev_raw_cmd(punit_bios_ipc_dev, cmd,
PUNIT_PARAM_LEN,
+ (u8 *)&write_buf, sizeof(write_buf), NULL, 0, 0, 0);
}
1) Why use raw_cmd here? It should use ipc_dev_cmd() according to original design. Same everywhere though this file.
In my initial versions of this patch set, I had only exported
ipc_dev_raw_cmd() API. Since this driver refactoring work was done
during that time, I have used intel_dev_raw_cmd() API in it. I have
added ipc_dev_cmd() API only recently to handle some new requirements
in intel_scu_ipc.c driver.
I will fix it in next version.
2) punit_cmd_init and ipc_dev_raw_cmd are repeated multiple time thoughout the file. They can be made into a separate local API inside telemetry, like
telemetry_punit_send_cmd(). Same thoughout
I will make this change in next version.
static int telemetry_setup_iossevtconfig(struct telemetry_evtconfig
evtconfig, @@ -435,6 +434,7 @@ static int
telemetry_setup_pssevtconfig(struct telemetry_evtconfig evtconfig,
int ret, index, idx;
u32 *pss_evtmap;
u32 telem_ctrl;
+ u32 cmd[PUNIT_PARAM_LEN] = {0};
num_pss_evts = evtconfig.num_evts;
pss_period = evtconfig.period;
@@ -442,8 +442,9 @@ static int telemetry_setup_pssevtconfig(struct
telemetry_evtconfig evtconfig,
/* PSS Config */
/* Get telemetry EVENT CTL */
- ret =
intel_punit_ipc_command(IPC_PUNIT_BIOS_READ_TELE_EVENT_CTRL,
- 0, 0, NULL, &telem_ctrl);
+ punit_cmd_init(cmd, IPC_PUNIT_BIOS_READ_TELE_EVENT_CTRL, 0,
0);
+ ret = ipc_dev_raw_cmd(punit_bios_ipc_dev, cmd,
PUNIT_PARAM_LEN, NULL,
+ 0, &telem_ctrl, 1, 0, 0);
if (ret) {
pr_err("PSS TELEM_CTRL Read Failed\n");
return ret;
@@ -451,8 +452,9 @@ static int telemetry_setup_pssevtconfig(struct
telemetry_evtconfig evtconfig,
/* Disable Telemetry */
TELEM_DISABLE(telem_ctrl);
- ret =
intel_punit_ipc_command(IPC_PUNIT_BIOS_WRITE_TELE_EVENT_CTRL,
- 0, 0, &telem_ctrl, NULL);
+ punit_cmd_init(cmd, IPC_PUNIT_BIOS_WRITE_TELE_EVENT_CTRL, 0,
0);
+ ret = ipc_dev_raw_cmd(punit_bios_ipc_dev, cmd,
PUNIT_PARAM_LEN,
+ (u8 *)&telem_ctrl, sizeof(telem_ctrl), NULL, 0, 0, 0);
if (ret) {
pr_err("PSS TELEM_CTRL Event Disable Write Failed\n");
return ret;
@@ -463,9 +465,10 @@ static int telemetry_setup_pssevtconfig(struct
telemetry_evtconfig evtconfig,
/* Clear All Events */
TELEM_CLEAR_EVENTS(telem_ctrl);
- ret = intel_punit_ipc_command(
- IPC_PUNIT_BIOS_WRITE_TELE_EVENT_CTRL,
- 0, 0, &telem_ctrl, NULL);
+ punit_cmd_init(cmd,
IPC_PUNIT_BIOS_WRITE_TELE_EVENT_CTRL, 0, 0);
+ ret = ipc_dev_raw_cmd(punit_bios_ipc_dev, cmd,
PUNIT_PARAM_LEN,
+ (u8 *)&telem_ctrl, sizeof(telem_ctrl), NULL,
+ 0, 0, 0);
if (ret) {
pr_err("PSS TELEM_CTRL Event Disable Write
Failed\n");
return ret;
@@ -489,9 +492,10 @@ static int telemetry_setup_pssevtconfig(struct
telemetry_evtconfig evtconfig,
/* Clear All Events */
TELEM_CLEAR_EVENTS(telem_ctrl);
- ret = intel_punit_ipc_command(
- IPC_PUNIT_BIOS_WRITE_TELE_EVENT_CTRL,
- 0, 0, &telem_ctrl, NULL);
+ punit_cmd_init(cmd,
IPC_PUNIT_BIOS_WRITE_TELE_EVENT_CTRL, 0, 0);
+ ret = ipc_dev_raw_cmd(punit_bios_ipc_dev, cmd,
PUNIT_PARAM_LEN,
+ (u8 *)&telem_ctrl, sizeof(telem_ctrl), NULL,
+ 0, 0, 0);
if (ret) {
pr_err("PSS TELEM_CTRL Event Disable Write
Failed\n");
return ret;
@@ -540,8 +544,9 @@ static int telemetry_setup_pssevtconfig(struct
telemetry_evtconfig evtconfig,
TELEM_ENABLE_PERIODIC(telem_ctrl);
telem_ctrl |= pss_period;
- ret =
intel_punit_ipc_command(IPC_PUNIT_BIOS_WRITE_TELE_EVENT_CTRL,
- 0, 0, &telem_ctrl, NULL);
+ punit_cmd_init(cmd, IPC_PUNIT_BIOS_WRITE_TELE_EVENT_CTRL, 0,
0);
+ ret = ipc_dev_raw_cmd(punit_bios_ipc_dev, cmd,
PUNIT_PARAM_LEN,
+ (u8 *)&telem_ctrl, sizeof(telem_ctrl), NULL, 0, 0, 0);
if (ret) {
pr_err("PSS TELEM_CTRL Event Enable Write Failed\n");
return ret;
@@ -601,6 +606,7 @@ static int telemetry_setup(struct platform_device
*pdev) {
struct telemetry_evtconfig pss_evtconfig, ioss_evtconfig;
u32 read_buf, events, event_regs;
+ u32 cmd[PUNIT_PARAM_LEN] = {0};
int ret;
ret = intel_pmc_ipc_command(PMC_IPC_PMC_TELEMTRY,
IOSS_TELEM_INFO_READ, @@ -626,8 +632,9 @@ static int
telemetry_setup(struct platform_device *pdev)
telm_conf->ioss_config.max_period =
TELEM_MAX_PERIOD(read_buf);
/* PUNIT Mailbox Setup */
- ret = intel_punit_ipc_command(IPC_PUNIT_BIOS_READ_TELE_INFO,
0, 0,
- NULL, &read_buf);
+ punit_cmd_init(cmd, IPC_PUNIT_BIOS_READ_TELE_INFO, 0, 0);
+ ret = ipc_dev_raw_cmd(punit_bios_ipc_dev, cmd,
PUNIT_PARAM_LEN,
+ NULL, 0, &read_buf, 1, 0, 0);
if (ret) {
dev_err(&pdev->dev, "PSS TELEM_INFO Read Failed\n");
return ret;
@@ -695,6 +702,7 @@ static int telemetry_plt_set_sampling_period(u8
pss_period, u8 ioss_period) {
u32 telem_ctrl = 0;
int ret = 0;
+ u32 cmd[PUNIT_PARAM_LEN] = {0};
mutex_lock(&(telm_conf->telem_lock));
if (ioss_period) {
@@ -752,9 +760,9 @@ static int telemetry_plt_set_sampling_period(u8
pss_period, u8 ioss_period)
}
/* Get telemetry EVENT CTL */
- ret = intel_punit_ipc_command(
- IPC_PUNIT_BIOS_READ_TELE_EVENT_CTRL,
- 0, 0, NULL, &telem_ctrl);
+ punit_cmd_init(cmd,
IPC_PUNIT_BIOS_READ_TELE_EVENT_CTRL, 0, 0);
+ ret = ipc_dev_raw_cmd(punit_bios_ipc_dev, cmd,
PUNIT_PARAM_LEN,
+ NULL, 0, &telem_ctrl, 1, 0, 0);
if (ret) {
pr_err("PSS TELEM_CTRL Read Failed\n");
goto out;
@@ -762,9 +770,11 @@ static int telemetry_plt_set_sampling_period(u8
pss_period, u8 ioss_period)
/* Disable Telemetry */
TELEM_DISABLE(telem_ctrl);
- ret = intel_punit_ipc_command(
- IPC_PUNIT_BIOS_WRITE_TELE_EVENT_CTRL,
- 0, 0, &telem_ctrl, NULL);
+ punit_cmd_init(cmd,
IPC_PUNIT_BIOS_WRITE_TELE_EVENT_CTRL, 0,
+ 0);
+ ret = ipc_dev_raw_cmd(punit_bios_ipc_dev, cmd,
PUNIT_PARAM_LEN,
+ (u8 *)&telem_ctrl, sizeof(telem_ctrl), NULL,
+ 0, 0, 0);
if (ret) {
pr_err("PSS TELEM_CTRL Event Disable Write
Failed\n");
goto out;
@@ -776,9 +786,11 @@ static int telemetry_plt_set_sampling_period(u8
pss_period, u8 ioss_period)
TELEM_ENABLE_PERIODIC(telem_ctrl);
telem_ctrl |= pss_period;
- ret = intel_punit_ipc_command(
- IPC_PUNIT_BIOS_WRITE_TELE_EVENT_CTRL,
- 0, 0, &telem_ctrl, NULL);
+ punit_cmd_init(cmd,
IPC_PUNIT_BIOS_WRITE_TELE_EVENT_CTRL, 0,
+ 0);
+ ret = ipc_dev_raw_cmd(punit_bios_ipc_dev, cmd,
PUNIT_PARAM_LEN,
+ (u8 *)&telem_ctrl, sizeof(telem_ctrl), NULL,
+ 0, 0, 0);
if (ret) {
pr_err("PSS TELEM_CTRL Event Enable Write
Failed\n");
goto out;
@@ -1013,6 +1025,7 @@ static int telemetry_plt_get_trace_verbosity(enum
telemetry_unit telem_unit, {
u32 temp = 0;
int ret;
+ u32 cmd[PUNIT_PARAM_LEN] = {0};
if (verbosity == NULL)
return -EINVAL;
@@ -1020,9 +1033,9 @@ static int telemetry_plt_get_trace_verbosity(enum
telemetry_unit telem_unit,
mutex_lock(&(telm_conf->telem_trace_lock));
switch (telem_unit) {
case TELEM_PSS:
- ret = intel_punit_ipc_command(
- IPC_PUNIT_BIOS_READ_TELE_TRACE_CTRL,
- 0, 0, NULL, &temp);
+ punit_cmd_init(cmd,
IPC_PUNIT_BIOS_READ_TELE_TRACE_CTRL, 0, 0);
+ ret = ipc_dev_raw_cmd(punit_bios_ipc_dev, cmd,
PUNIT_PARAM_LEN,
+ NULL, 0, &temp, 1, 0, 0);
if (ret) {
pr_err("PSS TRACE_CTRL Read Failed\n");
goto out;
@@ -1058,15 +1071,16 @@ static int
telemetry_plt_set_trace_verbosity(enum telemetry_unit telem_unit, {
u32 temp = 0;
int ret;
+ u32 cmd[PUNIT_PARAM_LEN] = {0};
verbosity &= TELEM_TRC_VERBOSITY_MASK;
mutex_lock(&(telm_conf->telem_trace_lock));
switch (telem_unit) {
case TELEM_PSS:
- ret = intel_punit_ipc_command(
- IPC_PUNIT_BIOS_READ_TELE_TRACE_CTRL,
- 0, 0, NULL, &temp);
+ punit_cmd_init(cmd,
IPC_PUNIT_BIOS_READ_TELE_TRACE_CTRL, 0, 0);
+ ret = ipc_dev_raw_cmd(punit_bios_ipc_dev, cmd,
PUNIT_PARAM_LEN,
+ NULL, 0, &temp, 1, 0, 0);
if (ret) {
pr_err("PSS TRACE_CTRL Read Failed\n");
goto out;
@@ -1074,10 +1088,10 @@ 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_punit_ipc_command(
- IPC_PUNIT_BIOS_WRITE_TELE_TRACE_CTRL,
- 0, 0, &temp, NULL);
+ punit_cmd_init(cmd,
IPC_PUNIT_BIOS_WRITE_TELE_EVENT_CTRL,
+ 0, 0);
+ ret = ipc_dev_raw_cmd(punit_bios_ipc_dev, cmd,
PUNIT_PARAM_LEN,
+ (u8 *)&temp, sizeof(temp), NULL, 0, 0, 0);
if (ret) {
pr_err("PSS TRACE_CTRL Verbosity Set Failed\n");
goto out;
@@ -1139,6 +1153,10 @@ static int telemetry_pltdrv_probe(struct
platform_device *pdev)
if (!id)
return -ENODEV;
+ punit_bios_ipc_dev = intel_ipc_dev_get(PUNIT_BIOS_IPC_DEV);
+ if (IS_ERR_OR_NULL(punit_bios_ipc_dev))
+ return PTR_ERR(punit_bios_ipc_dev);
+
telm_conf = (struct telemetry_plt_config *)id->driver_data;
res0 = platform_get_resource(pdev, IORESOURCE_MEM, 0); @@ -
1218,6 +1236,7 @@ static int telemetry_pltdrv_probe(struct platform_device
*pdev) static int telemetry_pltdrv_remove(struct platform_device *pdev) {
telemetry_clear_pltdata();
+ intel_ipc_dev_put(punit_bios_ipc_dev);
iounmap(telm_conf->pss_config.regmap);
iounmap(telm_conf->ioss_config.regmap);
--
2.7.4
--
Sathyanarayanan Kuppuswamy
Linux kernel developer