me.c File Reference

#include <acpi/acpi.h>
#include <device/mmio.h>
#include <device/pci_ops.h>
#include <console/console.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include <device/pci_def.h>
#include <string.h>
#include <delay.h>
#include <elog.h>
#include <stdlib.h>
#include "chip.h"
#include "me.h"
#include "pch.h"
#include <vendorcode/google/chromeos/chromeos.h>

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Data Structures
struct	mbp_payload

Macros
#define	ASSIGN_FIELD_PTR(field_, val_)

Functions
static void	mei_dump (u32 dword, int offset, const char *type)
static union mei_csr	read_host_csr (void)
static void	write_host_csr (union mei_csr csr)
static union mei_csr	read_me_csr (void)
static void	write_cb (u32 dword)
static u32	read_cb (void)
static int	mei_wait_for_me_ready (void)
static void	mei_reset (void)
static int	mei_send_packet (union mei_header *mei, void *req_data)
static int	mei_send_data (u8 me_address, u8 host_address, void *req_data, int req_bytes)
static int	mei_send_header (u8 me_address, u8 host_address, void *header, int header_len, int complete)
static int	mei_recv_msg (void *header, int header_bytes, void *rsp_data, int rsp_bytes)
static int	mei_sendrecv_mkhi (struct mkhi_header *mkhi, void *req_data, int req_bytes, void *rsp_data, int rsp_bytes)
static int	mei_sendrecv_icc (struct icc_header *icc, void *req_data, int req_bytes, void *rsp_data, int rsp_bytes)
static void	intel_me_mbp_give_up (struct device *dev)
static void	intel_me_mbp_clear (struct device *dev)
static void	me_print_fw_version (struct mbp_fw_version_name *vers_name)
static void	print_cap (const char *name, int state)
static int	mkhi_get_fwcaps (struct mbp_mefwcaps *cap)
static void	me_print_fwcaps (struct mbp_mefwcaps *cap)
static int	mkhi_end_of_post (void)
void	intel_me_finalize (struct device *dev)
static int	me_icc_set_clock_enables (u32 mask)
static enum me_bios_path	intel_me_path (struct device *dev)
static int	intel_mei_setup (struct device *dev)
static int	intel_me_extend_valid (struct device *dev)
static u32	me_to_host_words_pending (void)
static int	intel_me_read_mbp (struct me_bios_payload *mbp_data, struct device *dev)
static void	intel_me_init (struct device *dev)
static void	intel_me_enable (struct device *dev)

Variables
static const char *const	me_bios_path_values []
static u8 *	mei_base_address
static struct device_operations	device_ops
static const unsigned short	pci_device_ids []
static const struct pci_driver intel_me	__pci_driver

Macro Definition Documentation

ASSIGN_FIELD_PTR

#define ASSIGN_FIELD_PTR	(		field_,
			val_
	)

Value:

                { \
                mbp_data->field_ = (typeof(mbp_data->field_))(void *)val_; \
                break; \
                }

Function Documentation

intel_me_enable()

static void intel_me_enable ( struct device *  dev )

static

Definition at line 903 of file me.c.

intel_me_extend_valid()

static int intel_me_extend_valid ( struct device *  dev )

static

Definition at line 669 of file me.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.

Referenced by intel_me_init().

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intel_me_finalize()

void intel_me_finalize

(

struct device *

dev

)

Definition at line 519 of file me.c.

References FD2, me_hfs::fpt_bad, intel_me_mbp_clear(), ME_HFS_CWS_NORMAL, ME_HFS_MODE_NORMAL, mei_base_address, mkhi_end_of_post(), me_hfs::operation_mode, PCH_DISABLE_MEI1, pci_and_config16(), PCI_BASE_ADDRESS_0, PCI_BASE_ADDRESS_MEM_ATTR_MASK, PCI_COMMAND, PCI_COMMAND_IO, PCI_COMMAND_MASTER, PCI_COMMAND_MEMORY, PCI_ME_HFS, pci_read_config32(), me_hfs::raw, RCBA32_OR, and me_hfs::working_state.

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intel_me_init()

static void intel_me_init ( struct device *  dev )

static

Definition at line 850 of file me.c.

References BIOS_DEBUG, BIOS_NOTICE, device::chip_info, config, CONFIG, me_bios_payload::fw_capabilities, me_bios_payload::fw_version_name, intel_me_extend_valid(), intel_me_path(), intel_me_read_mbp(), intel_mei_setup(), me_bios_path_values, me_icc_set_clock_enables(), ME_NORMAL_BIOS_PATH, me_print_fw_version(), me_print_fwcaps(), memset(), mbp_plat_time::mrst_pltrst_time_ms, me_bios_payload::plat_time, mbp_plat_time::pltrst_cpurst_time_ms, printk, and mbp_plat_time::wake_event_mrst_time_ms.

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intel_me_mbp_clear()

static void intel_me_mbp_clear ( struct device *  dev )

static

Definition at line 413 of file me.c.

References BIOS_INFO, BIOS_WARNING, count, intel_me_mbp_give_up(), me_hfs2::mbp_cleared, ME_DELAY, ME_RETRY, PCI_ME_HFS2, pci_read_config32(), printk, me_hfs2::raw, and udelay().

Referenced by intel_me_finalize().

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intel_me_mbp_give_up()

static void intel_me_mbp_give_up ( struct device *  dev )

static

Definition at line 397 of file me.c.

References mei_csr::interrupt_generate, PCI_ME_H_GS2, PCI_ME_MBP_GIVE_UP, pci_write_config32(), read_host_csr(), mei_csr::reset, and write_host_csr().

Referenced by intel_me_mbp_clear(), and intel_me_read_mbp().

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intel_me_path()

static enum me_bios_path intel_me_path ( struct device *  dev )

static

Definition at line 554 of file me.c.

References icc_header::api_version, BIOS_ERR, BIOS_INFO, icc_clock_enables_msg::clock_enables, ICC_API_VERSION_LYNXPOINT, ICC_SET_CLOCK_ENABLES, mask, mei_sendrecv_icc(), NULL, and printk.

Referenced by intel_me_init().

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intel_me_read_mbp()

static int intel_me_read_mbp ( struct me_bios_payload *  mbp_data, struct device *  dev  )

static

Definition at line 733 of file me.c.

References mbp_item_header::app_id, ASSIGN_FIELD_PTR, BIOS_DEBUG, BIOS_ERR, BIOS_INFO, CONFIG, mbp_payload::data, mbp_payload::header, ICC, intel_me_mbp_give_up(), mei_csr::interrupt_generate, mbp_item_header::item_id, mbp_item_header::length, malloc(), MBP_IDENT, MBP_MAKE_IDENT, me_hfs2::mbp_rdy, me_to_host_words_pending(), PCI_ME_HFS2, pci_read_config32(), printk, me_hfs2::raw, mbp_header::raw, read_cb(), read_host_csr(), and write_host_csr().

Referenced by intel_me_init().

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intel_mei_setup()

static int intel_mei_setup ( struct device *  dev )

static

Definition at line 642 of file me.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, res2mmio(), mei_csr::reset, resource::size, and write_host_csr().

Referenced by intel_me_init().

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me_icc_set_clock_enables()

static int me_icc_set_clock_enables ( u32  mask )

static

Definition at line 554 of file me.c.

Referenced by intel_me_init().

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me_print_fw_version()

static void me_print_fw_version ( struct mbp_fw_version_name *  vers_name )

static

Definition at line 434 of file me.c.

References BIOS_DEBUG, BIOS_ERR, mbp_fw_version_name::build_version, mbp_fw_version_name::hotfix_version, mbp_fw_version_name::major_version, mbp_fw_version_name::minor_version, and printk.

Referenced by intel_me_init().

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me_print_fwcaps()

static void me_print_fwcaps ( struct mbp_mefwcaps *  cap )

static

Definition at line 473 of file me.c.

References BIOS_ERR, mbp_mefwcaps::full_net, mbp_mefwcaps::icc_over_clocking, mbp_mefwcaps::intel_at, mbp_mefwcaps::intel_cls, mbp_mefwcaps::intel_mpc, mbp_mefwcaps::ipv6, mbp_mefwcaps::kvm, mbp_mefwcaps::manageability, mkhi_get_fwcaps(), mbp_mefwcaps::och, mbp_mefwcaps::pavp, print_cap(), printk, mbp_mefwcaps::std_net, mbp_mefwcaps::tls, mbp_mefwcaps::vlan, and mbp_mefwcaps::wlan.

Referenced by intel_me_init().

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me_to_host_words_pending()

static u32 me_to_host_words_pending ( void  )

static

Definition at line 713 of file me.c.

References mei_csr::buffer_depth, mei_csr::buffer_read_ptr, mei_csr::buffer_write_ptr, read_me_csr(), and mei_csr::ready.

Referenced by intel_me_read_mbp().

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mei_dump()

static void mei_dump ( u32  dword, int  offset, const char *  type  )

static

Definition at line 43 of file me.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::raw, mei_csr::ready, mei_csr::reset, and type.

Referenced by read_cb(), read_me_csr(), and write_cb().

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mei_recv_msg()

static int mei_recv_msg ( void *  header, int  header_bytes, void *  rsp_data, int  rsp_bytes  )

static

Definition at line 252 of file me.c.

References BIOS_ERR, mei_csr::buffer_read_ptr, mei_csr::buffer_write_ptr, header, mei_csr::interrupt_generate, mei_csr::interrupt_status, mei_header::is_complete, mei_header::length, ME_DELAY, ME_RETRY, mei_wait_for_me_ready(), printk, mei_header::raw, read_cb(), read_host_csr(), read_me_csr(), udelay(), and write_host_csr().

Referenced by mei_sendrecv_icc(), and mei_sendrecv_mkhi().

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mei_reset()

static void mei_reset ( void  )

static

Definition at line 126 of file me.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_packet().

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mei_send_data()

static int mei_send_data ( u8  me_address, u8  host_address, void *  req_data, int  req_bytes  )

static

Definition at line 204 of file me.c.

References mei_csr::buffer_depth, mei_csr::buffer_write_ptr, header, mei_header::host_address, mei_send_packet(), and read_host_csr().

Referenced by mei_sendrecv_icc(), and mei_sendrecv_mkhi().

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mei_send_header()

static int mei_send_header ( u8  me_address, u8  host_address, void *  header, int  header_len, int  complete  )

static

Definition at line 240 of file me.c.

References mei_header::client_address, header, mei_header::host_address, and mei_send_packet().

Referenced by mei_sendrecv_icc(), and mei_sendrecv_mkhi().

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mei_send_packet()

static int mei_send_packet ( union mei_header *  mei, void *  req_data  )

static

Definition at line 150 of file me.c.

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

Referenced by mei_send_data(), and mei_send_header().

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mei_sendrecv_icc()

static int mei_sendrecv_icc ( struct icc_header *  icc, void *  req_data, int  req_bytes, void *  rsp_data, int  rsp_bytes  )

inlinestatic

Definition at line 369 of file me.c.

References MEI_ADDRESS_ICC, MEI_HOST_ADDRESS, mei_recv_msg(), mei_send_data(), and mei_send_header().

Referenced by intel_me_path().

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mei_sendrecv_mkhi()

static int mei_sendrecv_mkhi ( struct mkhi_header *  mkhi, void *  req_data, int  req_bytes, void *  rsp_data, int  rsp_bytes  )

inlinestatic

Definition at line 331 of file me.c.

References BIOS_ERR, mkhi_header::command, mkhi_header::group_id, mkhi_header::is_response, MEI_ADDRESS_MKHI, MEI_HOST_ADDRESS, mei_recv_msg(), mei_send_data(), mei_send_header(), and printk.

Referenced by 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 110 of file me.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_packet().

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mkhi_end_of_post()

static int mkhi_end_of_post ( void  )

static

Definition at line 500 of file me.c.

References BIOS_ERR, BIOS_INFO, BIOS_NOTICE, mkhi_header::group_id, mei_sendrecv_mkhi(), MKHI_END_OF_POST, MKHI_GROUP_ID_GEN, NULL, and printk.

Referenced by intel_me_finalize().

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mkhi_get_fwcaps()

static int mkhi_get_fwcaps ( struct mbp_mefwcaps *  cap )

static

Definition at line 453 of file me.c.

References BIOS_ERR, me_fwcaps::caps_sku, mkhi_header::group_id, mei_sendrecv_mkhi(), MKHI_FWCAPS_GET_RULE, MKHI_GROUP_ID_FWCAPS, and printk.

Referenced by me_print_fwcaps().

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print_cap()

static void print_cap ( const char *  name, int  state  )

inlinestatic

Definition at line 446 of file me.c.

References BIOS_DEBUG, name, and printk.

Referenced by me_print_fwcaps().

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read_cb()

static u32 read_cb ( void  )

inlinestatic

Definition at line 102 of file me.c.

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

Referenced by intel_me_read_mbp(), and mei_recv_msg().

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read_host_csr()

static union mei_csr read_host_csr ( void  )

static

Definition at line 43 of file me.c.

Referenced by intel_me_mbp_give_up(), intel_me_read_mbp(), intel_mei_setup(), mei_recv_msg(), mei_reset(), mei_send_data(), and mei_send_packet().

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read_me_csr()

static union mei_csr read_me_csr ( void  )

static

Definition at line 83 of file me.c.

References mei_base_address, mei_dump(), MEI_H_CSR, mei_csr::raw, and write32().

Referenced by me_to_host_words_pending(), mei_recv_msg(), and mei_wait_for_me_ready().

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write_cb()

static void write_cb ( u32  dword )

inlinestatic

Definition at line 96 of file me.c.

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

Referenced by mei_send_packet().

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write_host_csr()

static void write_host_csr ( union mei_csr  csr )

inlinestatic

Definition at line 83 of file me.c.

Referenced by intel_me_mbp_give_up(), intel_me_read_mbp(), intel_mei_setup(), mei_recv_msg(), mei_reset(), and mei_send_packet().

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Variable Documentation

__pci_driver

const struct pci_driver intel_me __pci_driver

static

Initial value:

= {
        .ops     = &device_ops,
        .vendor  = PCI_VID_INTEL,
        .devices = pci_device_ids,
}

Definition at line 922 of file me.c.

device_ops

struct device_operations device_ops

static

Initial value:

= {
        .read_resources         = pci_dev_read_resources,
        .set_resources          = pci_dev_set_resources,
        .enable_resources       = pci_dev_enable_resources,
        .enable                 = intel_me_enable,
        .init                   = intel_me_init,
        .final                  = intel_me_finalize,
        .ops_pci                = &pci_dev_ops_pci,
}

Definition at line 903 of file me.c.

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 31 of file me.c.

Referenced by intel_me_init().

mei_base_address

u8* mei_base_address

static

Definition at line 41 of file me.c.

Referenced by intel_me_finalize(), intel_mei_setup(), read_cb(), read_me_csr(), and write_cb().

pci_device_ids

const unsigned short pci_device_ids[]

static

Initial value:

= {
        PCI_DID_INTEL_LPT_H_MEI,
        PCI_DID_INTEL_LPT_LP_MEI,
        0
}

Definition at line 922 of file me.c.