pmc_ipc.c File Reference

#include <acpi/acpigen.h>
#include <device/mmio.h>
#include <console/console.h>
#include <delay.h>
#include <intelblocks/pmclib.h>
#include <intelblocks/pmc_ipc.h>
#include <soc/pci_devs.h>
#include <stdint.h>
#include <timer.h>

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Macros
#define	IPC_WBUF0   0x80
#define	IPC_RBUF0   0x90
#define	PMC_IPC_CMD_OFFSET   0x0
#define	PMC_IPC_STS_OFFSET   0x4
#define	PMC_IPC_STS_BUSY   BIT(0)
#define	PMC_IPC_STS_ERR   BIT(1)
#define	PMC_IPC_ERR_CODE_SHIFT   16
#define	PMC_IPC_ERR_CODE_MASK   0xff
#define	PMC_IPC_XFER_TIMEOUT_MS   (1 * MSECS_PER_SEC) /* max 1s */
#define	IS_IPC_STS_BUSY(status)   ((status) & PMC_IPC_STS_BUSY)
#define	IPC_STS_HAS_ERROR(status)   ((status) & PMC_IPC_STS_ERR)
#define	IPC_STS_ERROR_CODE(sts)

Functions
static void *	pmc_reg (unsigned int pmc_reg_offset)
static const void *	pmc_rbuf (unsigned int ix)
static void *	pmc_wbuf (unsigned int ix)
static int	check_ipc_sts (void)
enum cb_err	pmc_send_ipc_cmd (uint32_t cmd, const struct pmc_ipc_buffer *wbuf, struct pmc_ipc_buffer *rbuf)
void	pmc_ipc_acpi_fill_ssdt (void)
void	pmc_ipc_acpi_set_pci_clock (unsigned int pcie_rp, unsigned int clock_pin, bool enable)

Macro Definition Documentation

IPC_RBUF0

#define IPC_RBUF0   0x90

Definition at line 23 of file pmc_ipc.c.

IPC_STS_ERROR_CODE

#define IPC_STS_ERROR_CODE

(

sts

)

Value:

                                        (((sts) >> PMC_IPC_ERR_CODE_SHIFT & \
                                        PMC_IPC_ERR_CODE_MASK))

Definition at line 38 of file pmc_ipc.c.

IPC_STS_HAS_ERROR

#define IPC_STS_HAS_ERROR

(

status

)

((status) & PMC_IPC_STS_ERR)

Definition at line 37 of file pmc_ipc.c.

IPC_WBUF0

#define IPC_WBUF0   0x80

Definition at line 17 of file pmc_ipc.c.

IS_IPC_STS_BUSY

#define IS_IPC_STS_BUSY

(

status

)

((status) & PMC_IPC_STS_BUSY)

Definition at line 36 of file pmc_ipc.c.

PMC_IPC_CMD_OFFSET

#define PMC_IPC_CMD_OFFSET   0x0

Definition at line 28 of file pmc_ipc.c.

PMC_IPC_ERR_CODE_MASK

#define PMC_IPC_ERR_CODE_MASK   0xff

Definition at line 33 of file pmc_ipc.c.

PMC_IPC_ERR_CODE_SHIFT

#define PMC_IPC_ERR_CODE_SHIFT   16

Definition at line 32 of file pmc_ipc.c.

PMC_IPC_STS_BUSY

#define PMC_IPC_STS_BUSY   BIT(0)

Definition at line 30 of file pmc_ipc.c.

PMC_IPC_STS_ERR

#define PMC_IPC_STS_ERR   BIT(1)

Definition at line 31 of file pmc_ipc.c.

PMC_IPC_STS_OFFSET

#define PMC_IPC_STS_OFFSET   0x4

Definition at line 29 of file pmc_ipc.c.

PMC_IPC_XFER_TIMEOUT_MS

#define PMC_IPC_XFER_TIMEOUT_MS   (1 * MSECS_PER_SEC) /* max 1s */

Definition at line 35 of file pmc_ipc.c.

Function Documentation

check_ipc_sts()

static int check_ipc_sts ( void  )

static

Definition at line 57 of file pmc_ipc.c.

References BIOS_ERR, IPC_STS_ERROR_CODE, IPC_STS_HAS_ERROR, IS_IPC_STS_BUSY, PMC_IPC_ERROR, PMC_IPC_STS_OFFSET, PMC_IPC_SUCCESS, PMC_IPC_TIMEOUT, PMC_IPC_XFER_TIMEOUT_MS, pmc_reg(), printk, read32(), stopwatch_expired(), stopwatch_init_msecs_expire(), and udelay().

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pmc_ipc_acpi_fill_ssdt()

void pmc_ipc_acpi_fill_ssdt

(

void

)

Definition at line 100 of file pmc_ipc.c.

References acpigen_emit_byte(), acpigen_pop_len(), acpigen_set_package_element_int(), acpigen_set_package_element_namestr(), acpigen_write_debug_namestr(), acpigen_write_debug_string(), acpigen_write_field(), acpigen_write_if_lequal_namestr_int(), acpigen_write_integer(), acpigen_write_len_f(), acpigen_write_method_serialized(), acpigen_write_name(), acpigen_write_opregion(), acpigen_write_package(), acpigen_write_return_namestr(), acpigen_write_shiftleft_op_int(), acpigen_write_sleep(), acpigen_write_store_int_to_op(), acpigen_write_store_op_to_namestr(), ADD_OP, ARG0_OP, ARG1_OP, ARG2_OP, ARG3_OP, ARG4_OP, ARG5_OP, ARG6_OP, ARRAY_SIZE, DECREMENT_OP, FIELD_DWORDACC, FIELD_NOLOCK, FIELD_PRESERVE, FIELDLIST_NAMESTR, FIELDLIST_OFFSET, FIELDLIST_RESERVED, IPC_RBUF0, IPC_WBUF0, LGREATER_OP, LOCAL0_OP, LOCAL1_OP, OPREGION, PMC_IPC_CMD_COMMAND_SHIFT, PMC_IPC_CMD_MSI_SHIFT, PMC_IPC_CMD_NO_MSI, PMC_IPC_CMD_OFFSET, PMC_IPC_CMD_SIZE_SHIFT, PMC_IPC_CMD_SUB_COMMAND_SHIFT, PMC_IPC_ERROR, PMC_IPC_STS_OFFSET, PMC_IPC_SUCCESS, PMC_IPC_TIMEOUT, PMC_IPC_XFER_TIMEOUT_MS, soc_read_pmc_base(), SYSTEMMEMORY, WHILE_OP, and ZERO_OP.

Referenced by soc_pmc_fill_ssdt().

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pmc_ipc_acpi_set_pci_clock()

void pmc_ipc_acpi_set_pci_clock	(	unsigned int	pcie_rp,
		unsigned int	clock_pin,
		bool	enable
	)

Definition at line 219 of file pmc_ipc.c.

References acpi_device_path_join(), acpigen_emit_namestring(), acpigen_write_dword(), acpigen_write_integer(), BIOS_ERR, PCH_DEVFN_PMC, pcidev_path_on_root(), PMC_IPC_CMD_ID_SET_PCIE_CLOCK, and printk.

Referenced by pcie_rtd3_acpi_method_off(), pcie_rtd3_acpi_method_on(), and pcie_rtd3_acpi_method_srck().

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pmc_rbuf()

static const void* pmc_rbuf ( unsigned int  ix )

static

Definition at line 47 of file pmc_ipc.c.

References IPC_RBUF0, and pmc_reg().

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pmc_reg()

static void* pmc_reg ( unsigned int  pmc_reg_offset )

static

Definition at line 41 of file pmc_ipc.c.

References soc_read_pmc_base().

Referenced by check_ipc_sts(), pmc_rbuf(), and pmc_wbuf().

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pmc_send_ipc_cmd()

enum cb_err pmc_send_ipc_cmd	(	uint32_t	cmd,
		const struct pmc_ipc_buffer *	wbuf,
		struct pmc_ipc_buffer *	rbuf
	)

Definition at line 57 of file pmc_ipc.c.

Referenced by cl_pmc_clear(), cl_pmc_en_gen_on_all_reboot(), cl_pmc_re_arm_after_reset(), cse_disable_mei_devices(), pmc_cl_discovery(), read_pmc_lpm_requirements(), and send_pmc_req().

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pmc_wbuf()

static void* pmc_wbuf ( unsigned int  ix )

static

Definition at line 52 of file pmc_ipc.c.

References IPC_WBUF0, and pmc_reg().

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