diff options
| -rw-r--r-- | MAINTAINERS | 7 | ||||
| -rw-r--r-- | arch/x86/include/asm/intel_pmc_ipc.h | 82 | ||||
| -rw-r--r-- | drivers/platform/x86/Kconfig | 7 | ||||
| -rw-r--r-- | drivers/platform/x86/Makefile | 1 | ||||
| -rw-r--r-- | drivers/platform/x86/dell-laptop.c | 183 | ||||
| -rw-r--r-- | drivers/platform/x86/intel_pmc_ipc.c | 767 | ||||
| -rw-r--r-- | drivers/platform/x86/tc1100-wmi.c | 2 |
7 files changed, 1004 insertions, 45 deletions
diff --git a/MAINTAINERS b/MAINTAINERS index bbb6aeb78b52..8133cefb6b6e 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -5470,6 +5470,13 @@ F: include/linux/mei_cl_bus.h F: drivers/misc/mei/* F: Documentation/misc-devices/mei/* +INTEL PMC IPC DRIVER +M: Zha Qipeng<qipeng.zha@intel.com> +L: platform-driver-x86@vger.kernel.org +S: Maintained +F: drivers/platform/x86/intel_pmc_ipc.c +F: arch/x86/include/asm/intel_pmc_ipc.h + IOC3 ETHERNET DRIVER M: Ralf Baechle <ralf@linux-mips.org> L: linux-mips@linux-mips.org diff --git a/arch/x86/include/asm/intel_pmc_ipc.h b/arch/x86/include/asm/intel_pmc_ipc.h new file mode 100644 index 000000000000..200ec2e7821d --- /dev/null +++ b/arch/x86/include/asm/intel_pmc_ipc.h @@ -0,0 +1,82 @@ +#ifndef _ASM_X86_INTEL_PMC_IPC_H_ +#define _ASM_X86_INTEL_PMC_IPC_H_ + +/* Commands */ +#define PMC_IPC_PMIC_ACCESS 0xFF +#define PMC_IPC_PMIC_ACCESS_READ 0x0 +#define PMC_IPC_PMIC_ACCESS_WRITE 0x1 +#define PMC_IPC_USB_PWR_CTRL 0xF0 +#define PMC_IPC_PMIC_BLACKLIST_SEL 0xEF +#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 */ +#define IPC_ERR_NONE 0 +#define IPC_ERR_CMD_NOT_SUPPORTED 1 +#define IPC_ERR_CMD_NOT_SERVICED 2 +#define IPC_ERR_UNABLE_TO_SERVICE 3 +#define IPC_ERR_CMD_INVALID 4 +#define IPC_ERR_CMD_FAILED 5 +#define IPC_ERR_EMSECURITY 6 +#define IPC_ERR_UNSIGNEDKERNEL 7 + +#if IS_ENABLED(CONFIG_INTEL_PMC_IPC) + +/* + * intel_pmc_ipc_simple_command + * @cmd: command + * @sub: sub type + */ +int intel_pmc_ipc_simple_command(int cmd, int sub); + +/* + * intel_pmc_ipc_raw_cmd + * @cmd: command + * @sub: sub type + * @in: input data + * @inlen: input length in bytes + * @out: output data + * @outlen: output length in dwords + * @sptr: data writing to SPTR register + * @dptr: data writing to DPTR register + */ +int intel_pmc_ipc_raw_cmd(u32 cmd, u32 sub, u8 *in, u32 inlen, + u32 *out, u32 outlen, u32 dptr, u32 sptr); + +/* + * intel_pmc_ipc_command + * @cmd: command + * @sub: sub type + * @in: input data + * @inlen: input length in bytes + * @out: output data + * @outlen: output length in dwords + */ +int intel_pmc_ipc_command(u32 cmd, u32 sub, u8 *in, u32 inlen, + u32 *out, u32 outlen); + +#else + +static inline int intel_pmc_ipc_simple_command(int cmd, int sub) +{ + return -EINVAL; +} + +static inline int intel_pmc_ipc_raw_cmd(u32 cmd, u32 sub, u8 *in, u32 inlen, + u32 *out, u32 outlen, u32 dptr, u32 sptr) +{ + return -EINVAL; +} + +static inline int intel_pmc_ipc_command(u32 cmd, u32 sub, u8 *in, u32 inlen, + u32 *out, u32 outlen) +{ + return -EINVAL; +} + +#endif /*CONFIG_INTEL_PMC_IPC*/ + +#endif diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig index 1e2f57f6d297..6dc13e4de396 100644 --- a/drivers/platform/x86/Kconfig +++ b/drivers/platform/x86/Kconfig @@ -912,4 +912,11 @@ config PVPANIC a paravirtualized device provided by QEMU; it lets a virtual machine (guest) communicate panic events to the host. +config INTEL_PMC_IPC + tristate "Intel PMC IPC Driver" + ---help--- + This driver provides support for PMC control on some Intel platforms. + The PMC is an ARC processor which defines IPC commands for communication + with other entities in the CPU. + endif # X86_PLATFORM_DEVICES diff --git a/drivers/platform/x86/Makefile b/drivers/platform/x86/Makefile index b3e54ed863c3..dda95a985321 100644 --- a/drivers/platform/x86/Makefile +++ b/drivers/platform/x86/Makefile @@ -59,3 +59,4 @@ obj-$(CONFIG_INTEL_SMARTCONNECT) += intel-smartconnect.o obj-$(CONFIG_PVPANIC) += pvpanic.o obj-$(CONFIG_ALIENWARE_WMI) += alienware-wmi.o +obj-$(CONFIG_INTEL_PMC_IPC) += intel_pmc_ipc.o diff --git a/drivers/platform/x86/dell-laptop.c b/drivers/platform/x86/dell-laptop.c index 35de903cb506..ed317ccac4a2 100644 --- a/drivers/platform/x86/dell-laptop.c +++ b/drivers/platform/x86/dell-laptop.c @@ -307,7 +307,6 @@ static const struct dmi_system_id dell_quirks[] __initconst = { }; static struct calling_interface_buffer *buffer; -static struct page *bufferpage; static DEFINE_MUTEX(buffer_mutex); static int hwswitch_state; @@ -424,45 +423,125 @@ static inline int dell_smi_error(int value) } } -/* Derived from information in DellWirelessCtl.cpp: - Class 17, select 11 is radio control. It returns an array of 32-bit values. - - Input byte 0 = 0: Wireless information - - result[0]: return code - result[1]: - Bit 0: Hardware switch supported - Bit 1: Wifi locator supported - Bit 2: Wifi is supported - Bit 3: Bluetooth is supported - Bit 4: WWAN is supported - Bit 5: Wireless keyboard supported - Bits 6-7: Reserved - Bit 8: Wifi is installed - Bit 9: Bluetooth is installed - Bit 10: WWAN is installed - Bits 11-15: Reserved - Bit 16: Hardware switch is on - Bit 17: Wifi is blocked - Bit 18: Bluetooth is blocked - Bit 19: WWAN is blocked - Bits 20-31: Reserved - result[2]: NVRAM size in bytes - result[3]: NVRAM format version number - - Input byte 0 = 2: Wireless switch configuration - result[0]: return code - result[1]: - Bit 0: Wifi controlled by switch - Bit 1: Bluetooth controlled by switch - Bit 2: WWAN controlled by switch - Bits 3-6: Reserved - Bit 7: Wireless switch config locked - Bit 8: Wifi locator enabled - Bits 9-14: Reserved - Bit 15: Wifi locator setting locked - Bits 16-31: Reserved -*/ +/* + * Derived from information in smbios-wireless-ctl: + * + * cbSelect 17, Value 11 + * + * Return Wireless Info + * cbArg1, byte0 = 0x00 + * + * cbRes1 Standard return codes (0, -1, -2) + * cbRes2 Info bit flags: + * + * 0 Hardware switch supported (1) + * 1 WiFi locator supported (1) + * 2 WLAN supported (1) + * 3 Bluetooth (BT) supported (1) + * 4 WWAN supported (1) + * 5 Wireless KBD supported (1) + * 6 Uw b supported (1) + * 7 WiGig supported (1) + * 8 WLAN installed (1) + * 9 BT installed (1) + * 10 WWAN installed (1) + * 11 Uw b installed (1) + * 12 WiGig installed (1) + * 13-15 Reserved (0) + * 16 Hardware (HW) switch is On (1) + * 17 WLAN disabled (1) + * 18 BT disabled (1) + * 19 WWAN disabled (1) + * 20 Uw b disabled (1) + * 21 WiGig disabled (1) + * 20-31 Reserved (0) + * + * cbRes3 NVRAM size in bytes + * cbRes4, byte 0 NVRAM format version number + * + * + * Set QuickSet Radio Disable Flag + * cbArg1, byte0 = 0x01 + * cbArg1, byte1 + * Radio ID value: + * 0 Radio Status + * 1 WLAN ID + * 2 BT ID + * 3 WWAN ID + * 4 UWB ID + * 5 WIGIG ID + * cbArg1, byte2 Flag bits: + * 0 QuickSet disables radio (1) + * 1-7 Reserved (0) + * + * cbRes1 Standard return codes (0, -1, -2) + * cbRes2 QuickSet (QS) radio disable bit map: + * 0 QS disables WLAN + * 1 QS disables BT + * 2 QS disables WWAN + * 3 QS disables UWB + * 4 QS disables WIGIG + * 5-31 Reserved (0) + * + * Wireless Switch Configuration + * cbArg1, byte0 = 0x02 + * + * cbArg1, byte1 + * Subcommand: + * 0 Get config + * 1 Set config + * 2 Set WiFi locator enable/disable + * cbArg1,byte2 + * Switch settings (if byte 1==1): + * 0 WLAN sw itch control (1) + * 1 BT sw itch control (1) + * 2 WWAN sw itch control (1) + * 3 UWB sw itch control (1) + * 4 WiGig sw itch control (1) + * 5-7 Reserved (0) + * cbArg1, byte2 Enable bits (if byte 1==2): + * 0 Enable WiFi locator (1) + * + * cbRes1 Standard return codes (0, -1, -2) + * cbRes2 QuickSet radio disable bit map: + * 0 WLAN controlled by sw itch (1) + * 1 BT controlled by sw itch (1) + * 2 WWAN controlled by sw itch (1) + * 3 UWB controlled by sw itch (1) + * 4 WiGig controlled by sw itch (1) + * 5-6 Reserved (0) + * 7 Wireless sw itch config locked (1) + * 8 WiFi locator enabled (1) + * 9-14 Reserved (0) + * 15 WiFi locator setting locked (1) + * 16-31 Reserved (0) + * + * Read Local Config Data (LCD) + * cbArg1, byte0 = 0x10 + * cbArg1, byte1 NVRAM index low byte + * cbArg1, byte2 NVRAM index high byte + * cbRes1 Standard return codes (0, -1, -2) + * cbRes2 4 bytes read from LCD[index] + * cbRes3 4 bytes read from LCD[index+4] + * cbRes4 4 bytes read from LCD[index+8] + * + * Write Local Config Data (LCD) + * cbArg1, byte0 = 0x11 + * cbArg1, byte1 NVRAM index low byte + * cbArg1, byte2 NVRAM index high byte + * cbArg2 4 bytes to w rite at LCD[index] + * cbArg3 4 bytes to w rite at LCD[index+4] + * cbArg4 4 bytes to w rite at LCD[index+8] + * cbRes1 Standard return codes (0, -1, -2) + * + * Populate Local Config Data from NVRAM + * cbArg1, byte0 = 0x12 + * cbRes1 Standard return codes (0, -1, -2) + * + * Commit Local Config Data to NVRAM + * cbArg1, byte0 = 0x13 + * cbRes1 Standard return codes (0, -1, -2) + */ static int dell_rfkill_set(void *data, bool blocked) { @@ -550,12 +629,21 @@ static int dell_debugfs_show(struct seq_file *s, void *data) (status & BIT(4)) >> 4); seq_printf(s, "Bit 5 : Wireless keyboard supported: %lu\n", (status & BIT(5)) >> 5); + seq_printf(s, "Bit 6 : UWB supported: %lu\n", + (status & BIT(6)) >> 6); + seq_printf(s, "Bit 7 : WiGig supported: %lu\n", + (status & BIT(7)) >> 7); seq_printf(s, "Bit 8 : Wifi is installed: %lu\n", (status & BIT(8)) >> 8); seq_printf(s, "Bit 9 : Bluetooth is installed: %lu\n", (status & BIT(9)) >> 9); seq_printf(s, "Bit 10: WWAN is installed: %lu\n", (status & BIT(10)) >> 10); + seq_printf(s, "Bit 11: UWB installed: %lu\n", + (status & BIT(11)) >> 11); + seq_printf(s, "Bit 12: WiGig installed: %lu\n", + (status & BIT(12)) >> 12); + seq_printf(s, "Bit 16: Hardware switch is on: %lu\n", (status & BIT(16)) >> 16); seq_printf(s, "Bit 17: Wifi is blocked: %lu\n", @@ -564,6 +652,10 @@ static int dell_debugfs_show(struct seq_file *s, void *data) (status & BIT(18)) >> 18); seq_printf(s, "Bit 19: WWAN is blocked: %lu\n", (status & BIT(19)) >> 19); + seq_printf(s, "Bit 20: UWB is blocked: %lu\n", + (status & BIT(20)) >> 20); + seq_printf(s, "Bit 21: WiGig is blocked: %lu\n", + (status & BIT(21)) >> 21); seq_printf(s, "\nhwswitch_state:\t0x%X\n", hwswitch_state); seq_printf(s, "Bit 0 : Wifi controlled by switch: %lu\n", @@ -572,6 +664,10 @@ static int dell_debugfs_show(struct seq_file *s, void *data) (hwswitch_state & BIT(1)) >> 1); seq_printf(s, "Bit 2 : WWAN controlled by switch: %lu\n", (hwswitch_state & BIT(2)) >> 2); + seq_printf(s, "Bit 3 : UWB controlled by switch: %lu\n", + (hwswitch_state & BIT(3)) >> 3); + seq_printf(s, "Bit 4 : WiGig controlled by switch: %lu\n", + (hwswitch_state & BIT(4)) >> 4); seq_printf(s, "Bit 7 : Wireless switch config locked: %lu\n", (hwswitch_state & BIT(7)) >> 7); seq_printf(s, "Bit 8 : Wifi locator enabled: %lu\n", @@ -1972,12 +2068,11 @@ static int __init dell_init(void) * Allocate buffer below 4GB for SMI data--only 32-bit physical addr * is passed to SMI handler. */ - bufferpage = alloc_page(GFP_KERNEL | GFP_DMA32); - if (!bufferpage) { + buffer = (void *)__get_free_page(GFP_KERNEL | GFP_DMA32); + if (!buffer) { ret = -ENOMEM; goto fail_buffer; } - buffer = page_address(bufferpage); ret = dell_setup_rfkill(); @@ -2034,7 +2129,7 @@ static int __init dell_init(void) fail_backlight: dell_cleanup_rfkill(); fail_rfkill: - free_page((unsigned long)bufferpage); + free_page((unsigned long)buffer); fail_buffer: platform_device_del(platform_device); fail_platform_device2: diff --git a/drivers/platform/x86/intel_pmc_ipc.c b/drivers/platform/x86/intel_pmc_ipc.c new file mode 100644 index 000000000000..d734763dab69 --- /dev/null +++ b/drivers/platform/x86/intel_pmc_ipc.c @@ -0,0 +1,767 @@ +/* + * intel_pmc_ipc.c: Driver for the Intel PMC IPC mechanism + * + * (C) Copyright 2014-2015 Intel Corporation + * + * This driver is based on Intel SCU IPC driver(intel_scu_opc.c) by + * Sreedhara DS <sreedhara.ds@intel.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; version 2 + * of the License. + * + * PMC running in ARC processor communicates with other entity running in IA + * core through IPC mechanism which in turn messaging between IA core ad PMC. + */ + +#include <linux/module.h> +#include <linux/delay.h> +#include <linux/errno.h> +#include <linux/init.h> +#include <linux/device.h> +#include <linux/pm.h> +#include <linux/pci.h> +#include <linux/platform_device.h> +#include <linux/interrupt.h> +#include <linux/pm_qos.h> +#include <linux/kernel.h> +#include <linux/bitops.h> +#include <linux/sched.h> +#include <linux/atomic.h> +#include <linux/notifier.h> +#include <linux/suspend.h> +#include <linux/acpi.h> +#include <asm/intel_pmc_ipc.h> +#include <linux/mfd/lpc_ich.h> + +/* + * IPC registers + * The IA write to IPC_CMD command register triggers an interrupt to the ARC, + * The ARC handles the interrupt and services it, writing optional data to + * the IPC1 registers, updates the IPC_STS response register with the status. + */ +#define IPC_CMD 0x0 +#define IPC_CMD_MSI 0x100 +#define IPC_CMD_SIZE 16 +#define IPC_CMD_SUBCMD 12 +#define IPC_STATUS 0x04 +#define IPC_STATUS_IRQ 0x4 +#define IPC_STATUS_ERR 0x2 +#define IPC_STATUS_BUSY 0x1 +#define IPC_SPTR 0x08 +#define IPC_DPTR 0x0C +#define IPC_WRITE_BUFFER 0x80 +#define IPC_READ_BUFFER 0x90 + +/* + * 16-byte buffer for sending data associated with IPC command. + */ +#define IPC_DATA_BUFFER_SIZE 16 + +#define IPC_LOOP_CNT 3000000 +#define IPC_MAX_SEC 3 + +#define IPC_TRIGGER_MODE_IRQ true + +/* exported resources from IFWI */ +#define PLAT_RESOURCE_IPC_INDEX 0 +#define PLAT_RESOURCE_IPC_SIZE 0x1000 +#define PLAT_RESOURCE_GCR_SIZE 0x1000 +#define PLAT_RESOURCE_PUNIT_DATA_INDEX 1 +#define PLAT_RESOURCE_PUNIT_INTER_INDEX 2 +#define PLAT_RESOURCE_ACPI_IO_INDEX 0 + +/* + * BIOS does not create an ACPI device for each PMC function, + * but exports multiple resources from one ACPI device(IPC) for + * multiple functions. This driver is responsible to create a + * platform device and to export resources for those functions. + */ +#define TCO_DEVICE_NAME "iTCO_wdt" +#define SMI_EN_OFFSET 0x30 +#define SMI_EN_SIZE 4 +#define TCO_BASE_OFFSET 0x60 +#define TCO_REGS_SIZE 16 +#define PUNIT_DEVICE_NAME "intel_punit_ipc" + +static const int iTCO_version = 3; + +static struct intel_pmc_ipc_dev { + struct device *dev; + void __iomem *ipc_base; + bool irq_mode; + int irq; + int cmd; + struct completion cmd_complete; + + /* The following PMC BARs share the same ACPI device with the IPC */ + void *acpi_io_base; + int acpi_io_size; + struct platform_device *tco_dev; + + /* gcr */ + void *gcr_base; + int gcr_size; + + /* punit */ + void *punit_base; + int punit_size; + void *punit_base2; + int punit_size2; + struct platform_device *punit_dev; +} ipcdev; + +static char *ipc_err_sources[] = { + [IPC_ERR_NONE] = + "no error", + [IPC_ERR_CMD_NOT_SUPPORTED] = + "command not supported", + [IPC_ERR_CMD_NOT_SERVICED] = + "command not serviced", + [IPC_ERR_UNABLE_TO_SERVICE] = + "unable to service", + [IPC_ERR_CMD_INVALID] = + "command invalid", + [IPC_ERR_CMD_FAILED] = + "command failed", + [IPC_ERR_EMSECURITY] = + "Invalid Battery", + [IPC_ERR_UNSIGNEDKERNEL] = + "Unsigned kernel", +}; + +/* Prevent concurrent calls to the PMC */ +static DEFINE_MUTEX(ipclock); + +static inline void ipc_send_command(u32 cmd) +{ + ipcdev.cmd = cmd; + if (ipcdev.irq_mode) { + reinit_completion(&ipcdev.cmd_complete); + cmd |= IPC_CMD_MSI; + } + writel(cmd, ipcdev.ipc_base + IPC_CMD); +} + +static inline u32 ipc_read_status(void) +{ + return readl(ipcdev.ipc_base + IPC_STATUS); +} + +static inline void ipc_data_writel(u32 data, u32 offset) +{ + writel(data, ipcdev.ipc_base + IPC_WRITE_BUFFER + offset); +} + +static inline u8 ipc_data_readb(u32 offset) +{ + return readb(ipcdev.ipc_base + IPC_READ_BUFFER + offset); +} + +static inline u32 ipc_data_readl(u32 offset) +{ + return readl(ipcdev.ipc_base + IPC_READ_BUFFER + offset); +} + +static int intel_pmc_ipc_check_status(void) +{ + int status; + int ret = 0; + + if (ipcdev.irq_mode) { + if (0 == wait_for_completion_timeout( + &ipcdev.cmd_complete, IPC_MAX_SEC * HZ)) + ret = -ETIMEDOUT; + } else { + int loop_count = IPC_LOOP_CNT; + + while ((ipc_read_status() & IPC_STATUS_BUSY) && --loop_count) + udelay(1); + if (loop_count == 0) + ret = -ETIMEDOUT; + } + + status = ipc_read_status(); + if (ret == -ETIMEDOUT) { + dev_err(ipcdev.dev, + "IPC timed out, TS=0x%x, CMD=0x%x\n", + status, ipcdev.cmd); + return ret; + } + + if (status & IPC_STATUS_ERR) { + int i; + + ret = -EIO; + i = (status >> IPC_CMD_SIZE) & 0xFF; + if (i < ARRAY_SIZE(ipc_err_sources)) + dev_err(ipcdev.dev, + "IPC failed: %s, STS=0x%x, CMD=0x%x\n", + ipc_err_sources[i], status, ipcdev.cmd); + else + dev_err(ipcdev.dev, + "IPC failed: unknown, STS=0x%x, CMD=0x%x\n", + status, ipcdev.cmd); + if ((i == IPC_ERR_UNSIGNEDKERNEL) || (i == IPC_ERR_EMSECURITY)) + ret = -EACCES; + } + + return ret; +} + +/* + * intel_pmc_ipc_simple_command + * @cmd: command + * @sub: sub type + */ +int intel_pmc_ipc_simple_command(int cmd, int sub) +{ + int ret; + + mutex_lock(&ipclock); + if (ipcdev.dev == NULL) { + mutex_unlock(&ipclock); + return -ENODEV; + } + ipc_send_command(sub << IPC_CMD_SUBCMD | cmd); + ret = intel_pmc_ipc_check_status(); + mutex_unlock(&ipclock); + + return ret; +} +EXPORT_SYMBOL_GPL(intel_pmc_ipc_simple_command); + +/* + * intel_pmc_ipc_raw_cmd + * @cmd: command + * @sub: sub type + * @in: input data + * @inlen: input length in bytes + * @out: output data + * @outlen: output length in dwords + * @sptr: data writing to SPTR register + * @dptr: data writing to DPTR register + */ +int intel_pmc_ipc_raw_cmd(u32 cmd, u32 sub, u8 *in, u32 inlen, u32 *out, + u32 outlen, u32 dptr, u32 sptr) +{ + u32 wbuf[4] = { 0 }; + int ret; + int i; + + if (inlen > IPC_DATA_BUFFER_SIZE || outlen > IPC_DATA_BUFFER_SIZE / 4) + return -EINVAL; + + mutex_lock(&ipclock); + if (ipcdev.dev == NULL) { + mutex_unlock(&ipclock); + return -ENODEV; + } + memcpy(wbuf, in, inlen); + writel(dptr, ipcdev.ipc_base + IPC_DPTR); + writel(sptr, ipcdev.ipc_base + IPC_SPTR); + /* The input data register is 32bit register and inlen is in Byte */ + for (i = 0; i < ((inlen + 3) / 4); i++) + ipc_data_writel(wbuf[i], 4 * i); + ipc_send_command((inlen << IPC_CMD_SIZE) | + (sub << IPC_CMD_SUBCMD) | cmd); + ret = intel_pmc_ipc_check_status(); + if (!ret) { + /* out is read from 32bit register and outlen is in 32bit */ + for (i = 0; i < outlen; i++) + *out++ = ipc_data_readl(4 * i); + } + mutex_unlock(&ipclock); + + return ret; +} +EXPORT_SYMBOL_GPL(intel_pmc_ipc_raw_cmd); + +/* + * intel_pmc_ipc_command + * @cmd: command + * @sub: sub type + * @in: input data + * @inlen: input length in bytes + * @out: output data + * @outlen: output length in dwords + */ +int intel_pmc_ipc_command(u32 cmd, u32 sub, u8 *in, u32 inlen, + u32 *out, u32 outlen) +{ + return intel_pmc_ipc_raw_cmd(cmd, sub, in, inlen, out, outlen, 0, 0); +} +EXPORT_SYMBOL_GPL(intel_pmc_ipc_command); + +static irqreturn_t ioc(int irq, void *dev_id) +{ + int status; + + if (ipcdev.irq_mode) { + status = ipc_read_status(); + writel(status | IPC_STATUS_IRQ, ipcdev.ipc_base + IPC_STATUS); + } + complete(&ipcdev.cmd_complete); + + return IRQ_HANDLED; +} + +static int ipc_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) +{ + resource_size_t pci_resource; + int ret; + int len; + + ipcdev.dev = &pci_dev_get(pdev)->dev; + ipcdev.irq_mode = IPC_TRIGGER_MODE_IRQ; + + ret = pci_enable_device(pdev); + if (ret) + return ret; + + ret = pci_request_regions(pdev, "intel_pmc_ipc"); + if (ret) + return ret; + + pci_resource = pci_resource_start(pdev, 0); + len = pci_resource_len(pdev, 0); + if (!pci_resource || !len) { + dev_err(&pdev->dev, "Failed to get resource\n"); + return -ENOMEM; + } + + init_completion(&ipcdev.cmd_complete); + + if (request_irq(pdev->irq, ioc, 0, "intel_pmc_ipc", &ipcdev)) { + dev_err(&pdev->dev, "Failed to request irq\n"); + return -EBUSY; + } + + ipcdev.ipc_base = ioremap_nocache(pci_resource, len); + if (!ipcdev.ipc_base) { + dev_err(&pdev->dev, "Failed to ioremap ipc base\n"); + free_irq(pdev->irq, &ipcdev); + ret = -ENOMEM; + } + + return ret; +} + +static void ipc_pci_remove(struct pci_dev *pdev) +{ + free_irq(pdev->irq, &ipcdev); + pci_release_regions(pdev); + pci_dev_put(pdev); + iounmap(ipcdev.ipc_base); + ipcdev.dev = NULL; +} + +static const struct pci_device_id ipc_pci_ids[] = { + {PCI_VDEVICE(INTEL, 0x0a94), 0}, + {PCI_VDEVICE(INTEL, 0x1a94), 0}, + { 0,} +}; +MODULE_DEVICE_TABLE(pci, ipc_pci_ids); + +static struct pci_driver ipc_pci_driver = { + .name = "intel_pmc_ipc", + .id_table = ipc_pci_ids, + .probe = ipc_pci_probe, + .remove = ipc_pci_remove, +}; + +static ssize_t intel_pmc_ipc_simple_cmd_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + int subcmd; + int cmd; + int ret; + + ret = sscanf(buf, "%d %d", &cmd, &subcmd); + if (ret != 2) { + dev_err(dev, "Error args\n"); + return -EINVAL; + } + + ret = intel_pmc_ipc_simple_command(cmd, subcmd); + if (ret) { + dev_err(dev, "command %d error with %d\n", cmd, ret); + return ret; + } + return (ssize_t)count; +} + +static ssize_t intel_pmc_ipc_northpeak_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + unsigned long val; + int subcmd; + int ret; + + if (kstrtoul(buf, 0, &val)) + return -EINVAL; + + if (val) + subcmd = 1; + else + subcmd = 0; + ret = intel_pmc_ipc_simple_command(PMC_IPC_NORTHPEAK_CTRL, subcmd); + if (ret) { + dev_err(dev, "command north %d error with %d\n", subcmd, ret); + return ret; + } + return (ssize_t)count; +} + +static DEVICE_ATTR(simplecmd, S_IWUSR, + NULL, intel_pmc_ipc_simple_cmd_store); +static DEVICE_ATTR(northpeak, S_IWUSR, + NULL, intel_pmc_ipc_northpeak_store); + +static struct attribute *intel_ipc_attrs[] = { + &dev_attr_northpeak.attr, + &dev_attr_simplecmd.attr, + NULL +}; + +static const struct attribute_group intel_ipc_group = { + .attrs = intel_ipc_attrs, +}; + +#define PUNIT_RESOURCE_INTER 1 +static struct resource punit_res[] = { + /* Punit */ + { + .flags = IORESOURCE_MEM, + }, + { + .flags = IORESOURCE_MEM, + }, +}; + +#define TCO_RESOURCE_ACPI_IO 0 +#define TCO_RESOURCE_SMI_EN_IO 1 +#define TCO_RESOURCE_GCR_MEM 2 +static struct resource tco_res[] = { + /* ACPI - TCO */ + { + .flags = IORESOURCE_IO, + }, + /* ACPI - SMI */ + { + .flags = IORESOURCE_IO, + }, + /* GCS */ + { + .flags = IORESOURCE_MEM, + }, +}; + +static struct lpc_ich_info tco_info = { + .name = "Apollo Lake SoC", + .iTCO_version = 3, +}; + +static int ipc_create_punit_device(void) +{ + struct platform_device *pdev; + struct resource *res; + int ret; + + pdev = platform_device_alloc(PUNIT_DEVICE_NAME, -1); + if (!pdev) { + dev_err(ipcdev.dev, "Failed to alloc punit platform device\n"); + return -ENOMEM; + } + + pdev->dev.parent = ipcdev.dev; + + res = punit_res; + res->start = (resource_size_t)ipcdev.punit_base; + res->end = res->start + ipcdev.punit_size - 1; + + res = punit_res + PUNIT_RESOURCE_INTER; + res->start = (resource_size_t)ipcdev.punit_base2; + res->end = res->start + ipcdev.punit_size2 - 1; + + ret = platform_device_add_resources(pdev, punit_res, + ARRAY_SIZE(punit_res)); + if (ret) { + dev_err(ipcdev.dev, "Failed to add platform punit resources\n"); + goto err; + } + + ret = platform_device_add(pdev); + if (ret) { + dev_err(ipcdev.dev, "Failed to add punit platform device\n"); + goto err; + } + ipcdev.punit_dev = pdev; + + return 0; +err: + platform_device_put(pdev); + return ret; +} + +static int ipc_create_tco_device(void) +{ + struct platform_device *pdev; + struct resource *res; + int ret; + + pdev = platform_device_alloc(TCO_DEVICE_NAME, -1); + if (!pdev) { + dev_err(ipcdev.dev, "Failed to alloc tco platform device\n"); + return -ENOMEM; + } + + pdev->dev.parent = ipcdev.dev; + + res = tco_res + TCO_RESOURCE_ACPI_IO; + res->start = (resource_size_t)ipcdev.acpi_io_base + TCO_BASE_OFFSET; + res->end = res->start + TCO_REGS_SIZE - 1; + + res = tco_res + TCO_RESOURCE_SMI_EN_IO; + res->start = (resource_size_t)ipcdev.acpi_io_base + SMI_EN_OFFSET; + res->end = res->start + SMI_EN_SIZE - 1; + + res = tco_res + TCO_RESOURCE_GCR_MEM; + res->start = (resource_size_t)ipcdev.gcr_base; + res->end = res->start + ipcdev.gcr_size - 1; + + ret = platform_device_add_resources(pdev, tco_res, ARRAY_SIZE(tco_res)); + if (ret) { + dev_err(ipcdev.dev, "Failed to add tco platform resources\n"); + goto err; + } + + ret = platform_device_add_data(pdev, &tco_info, + sizeof(struct lpc_ich_info)); + if (ret) { + dev_err(ipcdev.dev, "Failed to add tco platform data\n"); + goto err; + } + + ret = platform_device_add(pdev); + if (ret) { + dev_err(ipcdev.dev, "Failed to add tco platform device\n"); + goto err; + } + ipcdev.tco_dev = pdev; + + return 0; +err: + platform_device_put(pdev); + return ret; +} + +static int ipc_create_pmc_devices(void) +{ + int ret; + + ret = ipc_create_tco_device(); + if (ret) { + dev_err(ipcdev.dev, "Failed to add tco platform device\n"); + return ret; + } + ret = ipc_create_punit_device(); + if (ret) { + dev_err(ipcdev.dev, "Failed to add punit platform device\n"); + platform_device_unregister(ipcdev.tco_dev); + } + return ret; +} + +static int ipc_plat_get_res(struct platform_device *pdev) +{ + struct resource *res; + void __iomem *addr; + int size; + + res = platform_get_resource(pdev, IORESOURCE_IO, + PLAT_RESOURCE_ACPI_IO_INDEX); + if (!res) { + dev_err(&pdev->dev, "Failed to get io resource\n"); + return -ENXIO; + } + size = resource_size(res); + ipcdev.acpi_io_base = (void *)res->start; + ipcdev.acpi_io_size = size; + dev_info(&pdev->dev, "io res: %llx %x\n", + (long long)res->start, (int)resource_size(res)); + + res = platform_get_resource(pdev, IORESOURCE_MEM, + PLAT_RESOURCE_PUNIT_DATA_INDEX); + if (!res) { + dev_err(&pdev->dev, "Failed to get punit resource\n"); + return -ENXIO; + } + size = resource_size(res); + ipcdev.punit_base = (void *)res->start; + ipcdev.punit_size = size; + dev_info(&pdev->dev, "punit data res: %llx %x\n", + (long long)res->start, (int)resource_size(res)); + + res = platform_get_resource(pdev, IORESOURCE_MEM, + PLAT_RESOURCE_PUNIT_INTER_INDEX); + if (!res) { + dev_err(&pdev->dev, "Failed to get punit inter resource\n"); + return -ENXIO; + } + size = resource_size(res); + ipcdev.punit_base2 = (void *)res->start; + ipcdev.punit_size2 = size; + dev_info(&pdev->dev, "punit interface res: %llx %x\n", + (long long)res->start, (int)resource_size(res)); + + res = platform_get_resource(pdev, IORESOURCE_MEM, + PLAT_RESOURCE_IPC_INDEX); + if (!res) { + dev_err(&pdev->dev, "Failed to get ipc resource\n"); + return -ENXIO; + } + size = PLAT_RESOURCE_IPC_SIZE; + if (!request_mem_region(res->start, size, pdev->name)) { + dev_err(&pdev->dev, "Failed to request ipc resource\n"); + return -EBUSY; + } + addr = ioremap_nocache(res->start, size); + if (!addr) { + dev_err(&pdev->dev, "I/O memory remapping failed\n"); + release_mem_region(res->start, size); + return -ENOMEM; + } + ipcdev.ipc_base = addr; + + ipcdev.gcr_base = (void *)(res->start + size); + ipcdev.gcr_size = PLAT_RESOURCE_GCR_SIZE; + dev_info(&pdev->dev, "ipc res: %llx %x\n", + (long long)res->start, (int)resource_size(res)); + + return 0; +} + +#ifdef CONFIG_ACPI +static const struct acpi_device_id ipc_acpi_ids[] = { + { "INT34D2", 0}, + { } +}; +MODULE_DEVICE_TABLE(acpi, ipc_acpi_ids); +#endif + +static int ipc_plat_probe(struct platform_device *pdev) +{ + struct resource *res; + int ret; + + ipcdev.dev = &pdev->dev; + ipcdev.irq_mode = IPC_TRIGGER_MODE_IRQ; + init_completion(&ipcdev.cmd_complete); + + ipcdev.irq = platform_get_irq(pdev, 0); + if (ipcdev.irq < 0) { + dev_err(&pdev->dev, "Failed to get irq\n"); + return -EINVAL; + } + + ret = ipc_plat_get_res(pdev); + if (ret) { + dev_err(&pdev->dev, "Failed to request resource\n"); + return ret; + } + + ret = ipc_create_pmc_devices(); + if (ret) { + dev_err(&pdev->dev, "Failed to create pmc devices\n"); + goto err_device; + } + + if (request_irq(ipcdev.irq, ioc, 0, "intel_pmc_ipc", &ipcdev)) { + dev_err(&pdev->dev, "Failed to request irq\n"); + ret = -EBUSY; + goto err_irq; + } + + ret = sysfs_create_group(&pdev->dev.kobj, &intel_ipc_group); + if (ret) { + dev_err(&pdev->dev, "Failed to create sysfs group %d\n", + ret); + goto err_sys; + } + + return 0; +err_sys: + free_irq(ipcdev.irq, &ipcdev); +err_irq: + platform_device_unregister(ipcdev.tco_dev); + platform_device_unregister(ipcdev.punit_dev); +err_device: + iounmap(ipcdev.ipc_base); + res = platform_get_resource(pdev, IORESOURCE_MEM, + PLAT_RESOURCE_IPC_INDEX); + if (res) + release_mem_region(res->start, PLAT_RESOURCE_IPC_SIZE); + return ret; +} + +static int ipc_plat_remove(struct platform_device *pdev) +{ + struct resource *res; + + sysfs_remove_group(&pdev->dev.kobj, &intel_ipc_group); + free_irq(ipcdev.irq, &ipcdev); + platform_device_unregister(ipcdev.tco_dev); + platform_device_unregister(ipcdev.punit_dev); + iounmap(ipcdev.ipc_base); + res = platform_get_resource(pdev, IORESOURCE_MEM, + PLAT_RESOURCE_IPC_INDEX); + if (res) + release_mem_region(res->start, PLAT_RESOURCE_IPC_SIZE); + ipcdev.dev = NULL; + return 0; +} + +static struct platform_driver ipc_plat_driver = { + .remove = ipc_plat_remove, + .probe = ipc_plat_probe, + .driver = { + .name = "pmc-ipc-plat", + .acpi_match_table = ACPI_PTR(ipc_acpi_ids), + }, +}; + +static int __init intel_pmc_ipc_init(void) +{ + int ret; + + ret = platform_driver_register(&ipc_plat_driver); + if (ret) { + pr_err("Failed to register PMC ipc platform driver\n"); + return ret; + } + ret = pci_register_driver(&ipc_pci_driver); + if (ret) { + pr_err("Failed to register PMC ipc pci driver\n"); + platform_driver_unregister(&ipc_plat_driver); + return ret; + } + return ret; +} + +static void __exit intel_pmc_ipc_exit(void) +{ + pci_unregister_driver(&ipc_pci_driver); + platform_driver_unregister(&ipc_plat_driver); +} + +MODULE_AUTHOR("Zha Qipeng <qipeng.zha@intel.com>"); +MODULE_DESCRIPTION("Intel PMC IPC driver"); +MODULE_LICENSE("GPL"); + +/* Some modules are dependent on this, so init earlier */ +fs_initcall(intel_pmc_ipc_init); +module_exit(intel_pmc_ipc_exit); diff --git a/drivers/platform/x86/tc1100-wmi.c b/drivers/platform/x86/tc1100-wmi.c index e36542564131..89aa976f0ab2 100644 --- a/drivers/platform/x86/tc1100-wmi.c +++ b/drivers/platform/x86/tc1100-wmi.c @@ -82,7 +82,7 @@ static int get_state(u32 *out, u8 instance) tmp = 0; } - if (result.length > 0 && result.pointer) + if (result.length > 0) kfree(result.pointer); switch (instance) { |
