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path: root/drivers/platform/x86/intel_scu_ipc.c
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Diffstat (limited to 'drivers/platform/x86/intel_scu_ipc.c')
-rw-r--r--drivers/platform/x86/intel_scu_ipc.c180
1 files changed, 52 insertions, 128 deletions
diff --git a/drivers/platform/x86/intel_scu_ipc.c b/drivers/platform/x86/intel_scu_ipc.c
index bb2f1fba637b..943f9084dcb1 100644
--- a/drivers/platform/x86/intel_scu_ipc.c
+++ b/drivers/platform/x86/intel_scu_ipc.c
@@ -23,7 +23,7 @@
#include <linux/pm.h>
#include <linux/pci.h>
#include <linux/interrupt.h>
-#include <asm/setup.h>
+#include <asm/mrst.h>
#include <asm/intel_scu_ipc.h>
/* IPC defines the following message types */
@@ -38,10 +38,6 @@
#define IPC_CMD_PCNTRL_R 1 /* Register read */
#define IPC_CMD_PCNTRL_M 2 /* Register read-modify-write */
-/* Miscelaneous Command ids */
-#define IPC_CMD_INDIRECT_RD 2 /* 32bit indirect read */
-#define IPC_CMD_INDIRECT_WR 5 /* 32bit indirect write */
-
/*
* IPC register summary
*
@@ -62,8 +58,8 @@
#define IPC_BASE_ADDR 0xFF11C000 /* IPC1 base register address */
#define IPC_MAX_ADDR 0x100 /* Maximum IPC regisers */
-#define IPC_WWBUF_SIZE 16 /* IPC Write buffer Size */
-#define IPC_RWBUF_SIZE 16 /* IPC Read buffer Size */
+#define IPC_WWBUF_SIZE 20 /* IPC Write buffer Size */
+#define IPC_RWBUF_SIZE 20 /* IPC Read buffer Size */
#define IPC_I2C_BASE 0xFF12B000 /* I2C control register base address */
#define IPC_I2C_MAX_ADDR 0x10 /* Maximum I2C regisers */
@@ -78,12 +74,7 @@ struct intel_scu_ipc_dev {
static struct intel_scu_ipc_dev ipcdev; /* Only one for now */
-static int platform = 1;
-module_param(platform, int, 0);
-MODULE_PARM_DESC(platform, "1 for moorestown platform");
-
-
-
+static int platform; /* Platform type */
/*
* IPC Read Buffer (Read Only):
@@ -119,24 +110,6 @@ static inline void ipc_data_writel(u32 data, u32 offset) /* Write ipc data */
}
/*
- * IPC destination Pointer (Write Only):
- * Use content as pointer for destination write
- */
-static inline void ipc_write_dptr(u32 data) /* Write dptr data */
-{
- writel(data, ipcdev.ipc_base + 0x0C);
-}
-
-/*
- * IPC Source Pointer (Write Only):
- * Use content as pointer for read location
-*/
-static inline void ipc_write_sptr(u32 data) /* Write dptr data */
-{
- writel(data, ipcdev.ipc_base + 0x08);
-}
-
-/*
* Status Register (Read Only):
* Driver will read this register to get the ready/busy status of the IPC
* block and error status of the IPC command that was just processed by SCU
@@ -154,7 +127,7 @@ static inline u8 ipc_data_readb(u32 offset) /* Read ipc byte data */
return readb(ipcdev.ipc_base + IPC_READ_BUFFER + offset);
}
-static inline u8 ipc_data_readl(u32 offset) /* Read ipc u32 data */
+static inline u32 ipc_data_readl(u32 offset) /* Read ipc u32 data */
{
return readl(ipcdev.ipc_base + IPC_READ_BUFFER + offset);
}
@@ -175,62 +148,73 @@ static inline int busy_loop(void) /* Wait till scu status is busy */
return -ETIMEDOUT;
}
}
- return (status >> 1) & 1;
+ if ((status >> 1) & 1)
+ return -EIO;
+
+ return 0;
}
/* Read/Write power control(PMIC in Langwell, MSIC in PenWell) registers */
static int pwr_reg_rdwr(u16 *addr, u8 *data, u32 count, u32 op, u32 id)
{
- int nc;
+ int i, nc, bytes, d;
u32 offset = 0;
u32 err = 0;
- u8 cbuf[IPC_WWBUF_SIZE] = { '\0' };
+ u8 cbuf[IPC_WWBUF_SIZE] = { };
u32 *wbuf = (u32 *)&cbuf;
mutex_lock(&ipclock);
+
+ memset(cbuf, 0, sizeof(cbuf));
+
if (ipcdev.pdev == NULL) {
mutex_unlock(&ipclock);
return -ENODEV;
}
- if (platform == 1) {
- /* Entry is 4 bytes for read/write, 5 bytes for read modify */
- for (nc = 0; nc < count; nc++) {
+ if (platform != MRST_CPU_CHIP_PENWELL) {
+ bytes = 0;
+ d = 0;
+ for (i = 0; i < count; i++) {
+ cbuf[bytes++] = addr[i];
+ cbuf[bytes++] = addr[i] >> 8;
+ if (id != IPC_CMD_PCNTRL_R)
+ cbuf[bytes++] = data[d++];
+ if (id == IPC_CMD_PCNTRL_M)
+ cbuf[bytes++] = data[d++];
+ }
+ for (i = 0; i < bytes; i += 4)
+ ipc_data_writel(wbuf[i/4], i);
+ ipc_command(bytes << 16 | id << 12 | 0 << 8 | op);
+ } else {
+ for (nc = 0; nc < count; nc++, offset += 2) {
cbuf[offset] = addr[nc];
cbuf[offset + 1] = addr[nc] >> 8;
- if (id != IPC_CMD_PCNTRL_R)
- cbuf[offset + 2] = data[nc];
- if (id == IPC_CMD_PCNTRL_M) {
- cbuf[offset + 3] = data[nc + 1];
- offset += 1;
- }
- offset += 3;
}
- for (nc = 0, offset = 0; nc < count; nc++, offset += 4)
- ipc_data_writel(wbuf[nc], offset); /* Write wbuff */
- } else {
- for (nc = 0, offset = 0; nc < count; nc++, offset += 2)
- ipc_data_writel(addr[nc], offset); /* Write addresses */
- if (id != IPC_CMD_PCNTRL_R) {
- for (nc = 0; nc < count; nc++, offset++)
- ipc_data_writel(data[nc], offset); /* Write data */
- if (id == IPC_CMD_PCNTRL_M)
- ipc_data_writel(data[nc + 1], offset); /* Mask value*/
+ if (id == IPC_CMD_PCNTRL_R) {
+ for (nc = 0, offset = 0; nc < count; nc++, offset += 4)
+ ipc_data_writel(wbuf[nc], offset);
+ ipc_command((count*2) << 16 | id << 12 | 0 << 8 | op);
+ } else if (id == IPC_CMD_PCNTRL_W) {
+ for (nc = 0; nc < count; nc++, offset += 1)
+ cbuf[offset] = data[nc];
+ for (nc = 0, offset = 0; nc < count; nc++, offset += 4)
+ ipc_data_writel(wbuf[nc], offset);
+ ipc_command((count*3) << 16 | id << 12 | 0 << 8 | op);
+ } else if (id == IPC_CMD_PCNTRL_M) {
+ cbuf[offset] = data[0];
+ cbuf[offset + 1] = data[1];
+ ipc_data_writel(wbuf[0], 0); /* Write wbuff */
+ ipc_command(4 << 16 | id << 12 | 0 << 8 | op);
}
}
- if (id != IPC_CMD_PCNTRL_M)
- ipc_command((count * 3) << 16 | id << 12 | 0 << 8 | op);
- else
- ipc_command((count * 4) << 16 | id << 12 | 0 << 8 | op);
-
err = busy_loop();
-
if (id == IPC_CMD_PCNTRL_R) { /* Read rbuf */
/* Workaround: values are read as 0 without memcpy_fromio */
- memcpy_fromio(cbuf, ipcdev.ipc_base + IPC_READ_BUFFER, 16);
- if (platform == 1) {
+ memcpy_fromio(cbuf, ipcdev.ipc_base + 0x90, 16);
+ if (platform != MRST_CPU_CHIP_PENWELL) {
for (nc = 0, offset = 2; nc < count; nc++, offset += 3)
data[nc] = ipc_data_readb(offset);
} else {
@@ -405,70 +389,6 @@ int intel_scu_ipc_update_register(u16 addr, u8 bits, u8 mask)
EXPORT_SYMBOL(intel_scu_ipc_update_register);
/**
- * intel_scu_ipc_register_read - 32bit indirect read
- * @addr: register address
- * @value: 32bit value return
- *
- * Performs IA 32 bit indirect read, returns 0 on success, or an
- * error code.
- *
- * Can be used when SCCB(System Controller Configuration Block) register
- * HRIM(Honor Restricted IPC Messages) is set (bit 23)
- *
- * This function may sleep. Locking for SCU accesses is handled for
- * the caller.
- */
-int intel_scu_ipc_register_read(u32 addr, u32 *value)
-{
- u32 err = 0;
-
- mutex_lock(&ipclock);
- if (ipcdev.pdev == NULL) {
- mutex_unlock(&ipclock);
- return -ENODEV;
- }
- ipc_write_sptr(addr);
- ipc_command(4 << 16 | IPC_CMD_INDIRECT_RD);
- err = busy_loop();
- *value = ipc_data_readl(0);
- mutex_unlock(&ipclock);
- return err;
-}
-EXPORT_SYMBOL(intel_scu_ipc_register_read);
-
-/**
- * intel_scu_ipc_register_write - 32bit indirect write
- * @addr: register address
- * @value: 32bit value to write
- *
- * Performs IA 32 bit indirect write, returns 0 on success, or an
- * error code.
- *
- * Can be used when SCCB(System Controller Configuration Block) register
- * HRIM(Honor Restricted IPC Messages) is set (bit 23)
- *
- * This function may sleep. Locking for SCU accesses is handled for
- * the caller.
- */
-int intel_scu_ipc_register_write(u32 addr, u32 value)
-{
- u32 err = 0;
-
- mutex_lock(&ipclock);
- if (ipcdev.pdev == NULL) {
- mutex_unlock(&ipclock);
- return -ENODEV;
- }
- ipc_write_dptr(addr);
- ipc_data_writel(value, 0);
- ipc_command(4 << 16 | IPC_CMD_INDIRECT_WR);
- err = busy_loop();
- mutex_unlock(&ipclock);
- return err;
-}
-EXPORT_SYMBOL(intel_scu_ipc_register_write);
-
-/**
* intel_scu_ipc_simple_command - send a simple command
* @cmd: command
* @sub: sub type
@@ -524,7 +444,7 @@ int intel_scu_ipc_command(int cmd, int sub, u32 *in, int inlen,
for (i = 0; i < inlen; i++)
ipc_data_writel(*in++, 4 * i);
- ipc_command((sub << 12) | cmd | (inlen << 18));
+ ipc_command((inlen << 16) | (sub << 12) | cmd);
err = busy_loop();
for (i = 0; i < outlen; i++)
@@ -803,6 +723,7 @@ static void ipc_remove(struct pci_dev *pdev)
static const struct pci_device_id pci_ids[] = {
{PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x080e)},
+ {PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x082a)},
{ 0,}
};
MODULE_DEVICE_TABLE(pci, pci_ids);
@@ -817,6 +738,9 @@ static struct pci_driver ipc_driver = {
static int __init intel_scu_ipc_init(void)
{
+ platform = mrst_identify_cpu();
+ if (platform == 0)
+ return -ENODEV;
return pci_register_driver(&ipc_driver);
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-22 15:12:37 +0000