pcie.c File Reference

#include <console/console.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ops.h>
#include <device/pciexp.h>
#include <device/pci_ids.h>
#include <reg_script.h>
#include <soc/pci_devs.h>
#include <soc/pcie.h>
#include <soc/ramstage.h>
#include <soc/smm.h>
#include "chip.h"

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Functions
static int	root_port_offset (struct device *dev)
static int	is_first_port (struct device *dev)
static void	byt_pcie_init (struct device *dev)
static void	check_port_enabled (struct device *dev)
static u8	all_ports_no_dev_present (struct device *dev)
static void	check_device_present (struct device *dev)
static void	byt_pcie_enable (struct device *dev)
static void	byt_pciexp_scan_bridge (struct device *dev)

Variables
static int	pll_en_off
static uint32_t	strpfusecfg
static const struct reg_script	init_static_before_exit_latency []
static const struct reg_script	init_static_after_exit_latency []
static const struct reg_script	no_dev_behind_port []
static struct device_operations	device_ops
static const unsigned short	pci_device_ids []
static const struct pci_driver pcie_root_ports	__pci_driver

Function Documentation

all_ports_no_dev_present()

static u8 all_ports_no_dev_present ( struct device *  dev )

static

Definition at line 142 of file pcie.c.

References reg_script::dev, pci_path::devfn, device::path, device_path::pci, pci_read_config32(), pci_read_config8(), pci_write_config8(), PCIE_ROOT_PORT_COUNT, PDS, SI, SLCTL_SLSTS, and XCAP.

Referenced by check_device_present().

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byt_pcie_enable()

static void byt_pcie_enable ( struct device *  dev )

static

Definition at line 195 of file pcie.c.

References check_device_present(), check_port_enabled(), config, config_of(), reg_script::dev, is_first_port(), pci_read_config32(), PHYCTL2_IOSFBCTL, pll_en_off, PLL_OFF_EN, SMM_SAVE_PARAM_PCIE_WAKE_ENABLE, smm_southcluster_save_param(), southcluster_enable_dev(), STRPFUSECFG, and strpfusecfg.

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byt_pcie_init()

static void byt_pcie_init ( struct device *  dev )

static

Definition at line 75 of file pcie.c.

References BBCLKREQEN, config, config_of(), reg_script::dev, HPC, HPS, init_static_after_exit_latency, init_static_before_exit_latency, is_first_port(), L1EXIT_MASK, L1EXIT_SHIFT, LCAP, LCLKREQEN, pci_read_config32(), pci_write_config32(), PCIEDBG, pll_en_off, PWRCTL, REG_PCI_OR32, REG_PCI_RMW32, REG_SCRIPT_END, REG_SCRIPT_NEXT, reg_script_run_on_dev(), root_port_offset(), RPDBCGEN, RPDLCGEN, RPDTSQPOL, RPL1SQPOL, RPPGEN, RPSCGEN, SLCAP, SLN_SHIFT, SLS_SHIFT, SLV_SHIFT, SPCE, SRDBCGEN, and SRDLCGEN.

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byt_pciexp_scan_bridge()

static void byt_pciexp_scan_bridge ( struct device *  dev )

static

Definition at line 217 of file pcie.c.

References reg_script::dev, do_pci_scan_bridge(), LCTL, pciexp_scan_bus(), REG_PCI_POLL32, REG_SCRIPT_END, and reg_script_run_on_dev().

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check_device_present()

static void check_device_present ( struct device *  dev )

static

Definition at line 171 of file pcie.c.

References all_ports_no_dev_present(), BIOS_DEBUG, reg_script::dev, device::enabled, is_first_port(), LCTL, LD, no_dev_behind_port, pci_read_config32(), pci_write_config32(), PDS, printk, reg_script_run_on_dev(), SI, SLCTL_SLSTS, and XCAP.

Referenced by byt_pcie_enable().

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check_port_enabled()

static void check_port_enabled ( struct device *  dev )

static

Definition at line 116 of file pcie.c.

References reg_script::dev, device::enabled, LANECFG_MASK, LANECFG_SHIFT, PCIE_PORT1_FUNC, PCIE_PORT2_FUNC, PCIE_PORT3_FUNC, PCIE_PORT4_FUNC, root_port_offset(), and strpfusecfg.

Referenced by byt_pcie_enable().

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is_first_port()

static int is_first_port ( struct device *  dev )

inlinestatic

Definition at line 26 of file pcie.c.

Referenced by byt_pcie_enable(), byt_pcie_init(), and check_device_present().

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root_port_offset()

static int root_port_offset ( struct device *  dev )

inlinestatic

Definition at line 21 of file pcie.c.

References pci_path::devfn, device::path, device_path::pci, and PCI_FUNC.

Referenced by byt_pcie_init(), and check_port_enabled().

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Variable Documentation

__pci_driver

const struct pci_driver pcie_root_ports __pci_driver

static

Initial value:

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

Definition at line 240 of file pcie.c.

device_ops

struct device_operations device_ops

static

Initial value:

= {
        .read_resources         = pci_bus_read_resources,
        .set_resources          = pci_dev_set_resources,
        .enable_resources       = pci_bus_enable_resources,
        .init                   = byt_pcie_init,
        .scan_bus               = byt_pciexp_scan_bridge,
        .enable                 = byt_pcie_enable,
        .ops_pci                = &pci_dev_ops_pci,
}

Definition at line 217 of file pcie.c.

init_static_after_exit_latency

const struct reg_script init_static_after_exit_latency[]

static

Initial value:

= {
        
        REG_PCI_OR16(LCTL, CCC),
        
        REG_PCI_WRITE32(NFTS, 0x743a361b),
        
        REG_PCI_RMW32(MPC, ~CCEL_MASK, (0x3 << CCEL_SHIFT)),
        
        REG_PCI_RMW32(RTP, 0xff000000, 0x854c74),
        
        REG_PCI_OR16(MPC2, IPF | LSTP),
        
        REG_PCI_RMW32(CHCFG, ~UPSD, UNRS | UPRS),
        
        REG_PCI_RMW32(CFG2, ~(LATGC_MASK), CSREN | (3 << LATGC_SHIFT)),
        
        REG_PCI_OR16(MPC2, EOIFD),
        
        REG_PCI_RMW32(AERCH, ~0, (1 << 16) | (1 << 0)),
        
        REG_PCI_RMW16(DSTS2, ~CTD, 0x6),
        
        REG_PCI_OR16(DCTL_DSTS, URE | FEE | NFE | CEE),
        
        REG_PCI_OR32(0x34, 0),
        REG_PCI_OR32(0x80, 0),
        
        REG_PCI_OR16(LCTL, RL),
        REG_SCRIPT_END,
}

Definition at line 26 of file pcie.c.

Referenced by byt_pcie_init().

init_static_before_exit_latency

const struct reg_script init_static_before_exit_latency[]

static

Initial value:

= {
        
        REG_PCI_RMW32(DCAP2, ~(OBFFS | LTRMS), 0),
        REG_PCI_RMW32(DSTS2, ~(OBFFEN| LTRME), 0),
        
        REG_PCI_RMW32(DCAP, ~MPS_MASK, 0),
        
        REG_PCI_RMW32(PHYCTL2_IOSFBCTL, ~(TDFT | TXCFGCHWAIT | SIID), 0),
        REG_SCRIPT_END,
}

Definition at line 26 of file pcie.c.

Referenced by byt_pcie_init().

no_dev_behind_port

const struct reg_script no_dev_behind_port[]

static

Initial value:

= {
        REG_PCI_OR32(PCIEALC, (1 << 26)),
        REG_PCI_POLL32(PCIESTS1, 0x1f000000, (1 << 24), 50000),
        REG_PCI_OR32(PHYCTL4, SQDIS),
        REG_SCRIPT_END,
}

Definition at line 75 of file pcie.c.

Referenced by check_device_present().

pci_device_ids

const unsigned short pci_device_ids[]

static

Initial value:

= {
        PCIE_PORT1_DEVID, PCIE_PORT2_DEVID, PCIE_PORT3_DEVID, PCIE_PORT4_DEVID,
        0
}

Definition at line 240 of file pcie.c.

pll_en_off

int pll_en_off

static

Definition at line 18 of file pcie.c.

Referenced by byt_pcie_enable(), and byt_pcie_init().

strpfusecfg

uint32_t strpfusecfg

static

Definition at line 19 of file pcie.c.

Referenced by byt_pcie_enable(), and check_port_enabled().