me_common.c File Reference

#include <device/mmio.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ops.h>
#include <console/console.h>
#include <device/pci_ids.h>
#include <device/pci_def.h>
#include <string.h>
#include <delay.h>
#include <halt.h>
#include <timer.h>
#include "me.h"
#include "pch.h"
#include <vendorcode/google/chromeos/chromeos.h>

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Functions
const char *const	me_get_bios_path_string (int path)
static void	mei_dump (void *ptr, int dword, int offset, const char *type)
void	mei_read_dword_ptr (void *ptr, int offset)
void	mei_write_dword_ptr (void *ptr, int offset)
void	read_host_csr (struct mei_csr *csr)
void	write_host_csr (struct mei_csr *csr)
void	read_me_csr (struct mei_csr *csr)
void	write_cb (u32 dword)
u32	read_cb (void)
static int	mei_wait_for_me_ready (void)
static void	mei_reset (void)
static int	mei_send_msg (struct mei_header *mei, struct mkhi_header *mkhi, void *req_data)
static int	mei_recv_msg (struct mkhi_header *mkhi, void *rsp_data, int rsp_bytes)
int	mei_sendrecv (struct mei_header *mei, struct mkhi_header *mkhi, void *req_data, void *rsp_data, int rsp_bytes)
int	intel_mei_setup (struct device *dev)
int	intel_me_extend_valid (struct device *dev)
void	intel_me_hide (struct device *dev)
bool	enter_soft_temp_disable (void)
void	enter_soft_temp_disable_wait (void)
void	exit_soft_temp_disable (struct device *dev)
void	exit_soft_temp_disable_wait (struct device *dev)

Variables
static const char *const	me_bios_path_values []
static u32 *	mei_base_address

Function Documentation

enter_soft_temp_disable()

bool enter_soft_temp_disable

(

void

)

Definition at line 411 of file me_common.c.

References BIOS_WARNING, mkhi_header::group_id, mei_header::is_complete, MEI_ADDRESS_MKHI, MEI_HOST_ADDRESS, mei_sendrecv(), MKHI_DISABLE_RULE_ID, MKHI_FWCAPS_SET_RULE, MKHI_GROUP_ID_FWCAPS, printk, and me_disable::rule_id.

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enter_soft_temp_disable_wait()

void enter_soft_temp_disable_wait

(

void

)

Definition at line 439 of file me_common.c.

References mdelay().

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exit_soft_temp_disable()

void exit_soft_temp_disable

(

struct device *

dev

)

Definition at line 454 of file me_common.c.

References PCI_ME_H_GS, and pci_write_config32().

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exit_soft_temp_disable_wait()

void exit_soft_temp_disable_wait

(

struct device *

dev

)

Wait for fw_init_complete. Check every 50 ms, give up after 20 sec. This is what vendor BIOS does. Usually it takes 1.5 seconds or so.

Definition at line 460 of file me_common.c.

References BIOS_ERR, BIOS_NOTICE, me_hfs::fw_init_complete, mdelay(), ME_ENABLE_TIMEOUT, PCI_ME_HFS, pci_read_config32(), printk, me_hfs::raw, stopwatch_duration_msecs(), stopwatch_expired(), and stopwatch_init_msecs_expire().

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intel_me_extend_valid()

int intel_me_extend_valid

(

struct device *

dev

)

Definition at line 359 of file me_common.c.

References BIOS_DEBUG, BIOS_ERR, CONFIG, count, me_heres::extend_feature_present, me_heres::extend_reg_algorithm, me_heres::extend_reg_valid, PCI_ME_EXT_SHA1, PCI_ME_EXT_SHA256, PCI_ME_HER, PCI_ME_HERES, pci_read_config32(), printk, and me_heres::raw.

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intel_me_hide()

void intel_me_hide

(

struct device *

dev

)

Definition at line 405 of file me_common.c.

References device::enabled, and pch_enable().

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intel_mei_setup()

int intel_mei_setup

(

struct device *

dev

)

Definition at line 332 of file me_common.c.

References resource::base, BIOS_DEBUG, mei_csr::interrupt_generate, mei_base_address, PCI_BASE_ADDRESS_0, PCI_COMMAND, PCI_COMMAND_MASTER, PCI_COMMAND_MEMORY, pci_or_config16(), printk, probe_resource(), read_host_csr(), mei_csr::ready, mei_csr::reset, resource::size, and write_host_csr().

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me_get_bios_path_string()

const char* const me_get_bios_path_string

(

int

path

)

Definition at line 30 of file me_common.c.

References me_bios_path_values.

mei_dump()

static void mei_dump ( void *  ptr, int  dword, int  offset, const char *  type  )

static

Definition at line 38 of file me_common.c.

References BIOS_SPEW, mei_csr::buffer_depth, mei_csr::buffer_read_ptr, mei_csr::buffer_write_ptr, CONFIG, mei_csr::interrupt_enable, mei_csr::interrupt_generate, mei_csr::interrupt_status, MEI_H_CB_WW, MEI_H_CSR, MEI_ME_CB_RW, MEI_ME_CSR_HA, offset, printk, mei_csr::ready, mei_csr::reset, and type.

Referenced by mei_read_dword_ptr(), mei_write_dword_ptr(), read_cb(), and write_cb().

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mei_read_dword_ptr()

void mei_read_dword_ptr	(	void *	ptr,
		int	offset
	)

Definition at line 75 of file me_common.c.

References mei_base_address, mei_dump(), memcpy(), offset, and read32().

Referenced by mei_recv_msg(), read_host_csr(), and read_me_csr().

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mei_recv_msg()

static int mei_recv_msg ( struct mkhi_header *  mkhi, void *  rsp_data, int  rsp_bytes  )

static

Definition at line 222 of file me_common.c.

References BIOS_ERR, mei_csr::buffer_read_ptr, mei_csr::buffer_write_ptr, mkhi_header::command, mkhi_header::group_id, mei_csr::interrupt_generate, mei_csr::interrupt_status, mei_header::is_complete, mkhi_header::is_response, mei_header::length, ME_DELAY, ME_RETRY, MEI_ME_CB_RW, mei_read_dword_ptr(), mei_wait_for_me_ready(), printk, read_cb(), read_host_csr(), read_me_csr(), udelay(), and write_host_csr().

Referenced by mei_sendrecv().

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mei_reset()

static void mei_reset ( void  )

static

Definition at line 135 of file me_common.c.

References mei_csr::interrupt_generate, mei_wait_for_me_ready(), read_host_csr(), mei_csr::ready, mei_csr::reset, and write_host_csr().

Referenced by mei_send_msg().

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mei_send_msg()

static int mei_send_msg ( struct mei_header *  mei, struct mkhi_header *  mkhi, void *  req_data  )

static

Definition at line 159 of file me_common.c.

References BIOS_DEBUG, BIOS_ERR, mei_csr::buffer_depth, mei_csr::buffer_write_ptr, mei_csr::interrupt_generate, mei_header::length, MEI_H_CB_WW, mei_reset(), mei_wait_for_me_ready(), mei_write_dword_ptr(), printk, read_host_csr(), write_cb(), and write_host_csr().

Referenced by mei_sendrecv().

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mei_sendrecv()

int mei_sendrecv	(	struct mei_header *	mei,
		struct mkhi_header *	mkhi,
		void *	req_data,
		void *	rsp_data,
		int	rsp_bytes
	)

Definition at line 306 of file me_common.c.

References mei_recv_msg(), and mei_send_msg().

Referenced by enter_soft_temp_disable(), me7_mkhi_end_of_post(), me8_mkhi_end_of_post(), and mkhi_get_fwcaps().

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mei_wait_for_me_ready()

static int mei_wait_for_me_ready ( void  )

static

Definition at line 119 of file me_common.c.

References BIOS_ERR, ME_DELAY, ME_RETRY, printk, read_me_csr(), mei_csr::ready, and udelay().

Referenced by mei_recv_msg(), mei_reset(), and mei_send_msg().

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mei_write_dword_ptr()

void mei_write_dword_ptr	(	void *	ptr,
		int	offset
	)

Definition at line 82 of file me_common.c.

References mei_base_address, mei_dump(), memcpy(), offset, and write32().

Referenced by mei_send_msg(), and write_host_csr().

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read_cb()

u32 read_cb

(

void

)

Definition at line 111 of file me_common.c.

References mei_base_address, mei_dump(), MEI_ME_CB_RW, NULL, and read32().

Referenced by mei_recv_msg().

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read_host_csr()

void read_host_csr

(

struct mei_csr *

csr

)

Definition at line 90 of file me_common.c.

References MEI_H_CSR, and mei_read_dword_ptr().

Referenced by intel_mei_setup(), mei_recv_msg(), mei_reset(), and mei_send_msg().

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read_me_csr()

void read_me_csr

(

struct mei_csr *

csr

)

Definition at line 100 of file me_common.c.

References MEI_ME_CSR_HA, and mei_read_dword_ptr().

Referenced by mei_recv_msg(), and mei_wait_for_me_ready().

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write_cb()

void write_cb

(

u32

dword

)

Definition at line 105 of file me_common.c.

References mei_base_address, mei_dump(), MEI_H_CB_WW, NULL, and write32().

Referenced by mei_send_msg().

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write_host_csr()

void write_host_csr

(

struct mei_csr *

csr

)

Definition at line 95 of file me_common.c.

References MEI_H_CSR, and mei_write_dword_ptr().

Referenced by intel_mei_setup(), mei_recv_msg(), mei_reset(), and mei_send_msg().

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Variable Documentation

me_bios_path_values

const char* const me_bios_path_values[]

static

Initial value:

= {
        [ME_NORMAL_BIOS_PATH]           = "Normal",
        [ME_S3WAKE_BIOS_PATH]           = "S3 Wake",
        [ME_ERROR_BIOS_PATH]            = "Error",
        [ME_RECOVERY_BIOS_PATH]         = "Recovery",
        [ME_DISABLE_BIOS_PATH]          = "Disable",
        [ME_FIRMWARE_UPDATE_BIOS_PATH]  = "Firmware Update",
}

Definition at line 21 of file me_common.c.

Referenced by me_get_bios_path_string().

mei_base_address

u32* mei_base_address

static

Definition at line 36 of file me_common.c.

Referenced by intel_mei_setup(), mei_read_dword_ptr(), mei_write_dword_ptr(), read_cb(), and write_cb().