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/* Copyright (c) 2012-2013, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef __PCIE_EXYNOS_HOST_V0_H
#define __PCIE_EXYNOS_HOST_V0_H
#define MAX_TIMEOUT 2000
#define ID_MASK 0xffff
#define TPUT_THRESHOLD 150
#define MAX_RC_NUM 2
#define MAX_L1_EXIT_TIMEOUT 300
#if defined(CONFIG_SOC_EXYNOS8890)
#define PCI_DEVICE_ID_EXYNOS 0xa544
#define GPIO_DEBUG_SFR 0x15601068
#else
#define PCI_DEVICE_ID_EXYNOS 0xecec
#define GPIO_DEBUG_SFR 0x0
#endif
#define to_exynos_pcie(x) dev_get_drvdata((x)->dev)
#define PCIE_BUS_PRIV_DATA(pdev) \
((struct pcie_port *)pdev->bus->sysdata)
#define MAX_PCIE_PIN_STATE 2
#define PCIE_PIN_DEFAULT 0
#define PCIE_PIN_IDLE 1
struct regmap;
struct exynos_pcie_clks {
struct clk *pcie_clks[10];
struct clk *phy_clks[3];
};
enum exynos_pcie_state {
STATE_LINK_DOWN = 0,
STATE_LINK_UP_TRY,
STATE_LINK_DOWN_TRY,
STATE_LINK_UP,
};
struct pcie_phyops {
void (*phy_check_rx_elecidle)(void *phy_pcs_base_regs, int val,
int ch_num);
void (*phy_all_pwrdn)(void *phy_base_regs, void *phy_pcs_base_regs,
void *sysreg_base_regs, int ch_num);
void (*phy_all_pwrdn_clear)(void *phy_base_regs,
void *phy_pcs_base_regs,
void *sysreg_base_regs, int ch_num);
void (*phy_config)(void *phy_base_regs, void *phy_pcs_base_regs,
void *sysreg_base_regs, void *elbi_base_regs,
int ch_num);
void (*phy_config_regmap)(void *phy_base_regs, void *phy_pcs_base_regs,
struct regmap *sysreg_phandle,
void *elbi_base_regs, int ch_num);
};
struct exynos_pcie {
struct dw_pcie *pci;
void __iomem *elbi_base;
void __iomem *phy_base;
void __iomem *sysreg_base;
void __iomem *rc_dbi_base;
void __iomem *phy_pcs_base;
void __iomem *ia_base;
struct regmap *pmureg;
struct regmap *sysreg;
int perst_gpio;
int ch_num;
int pcie_clk_num;
int phy_clk_num;
enum exynos_pcie_state state;
int probe_ok;
int l1ss_enable;
int linkdown_cnt;
int idle_ip_index;
bool use_msi;
bool use_cache_coherency;
bool use_sicd;
bool atu_ok;
bool use_sysmmu;
bool use_ia;
spinlock_t conf_lock;
spinlock_t reg_lock;
spinlock_t pcie_l1_exit_lock;
struct workqueue_struct *pcie_wq;
struct exynos_pcie_clks clks;
struct pci_dev *pci_dev;
struct pci_saved_state *pci_saved_configs;
struct notifier_block power_mode_nb;
struct notifier_block ss_dma_mon_nb;
struct delayed_work dislink_work;
struct exynos_pcie_register_event *event_reg;
#ifdef CONFIG_PM_DEVFREQ
unsigned int int_min_lock;
#endif
u32 ip_ver;
struct pcie_phyops phy_ops;
int l1ss_ctrl_id_state;
struct workqueue_struct *pcie_wq_l1ss;
struct delayed_work l1ss_boot_delay_work;
int boot_cnt;
int work_l1ss_cnt;
int ep_device_type;
int max_link_speed;
struct pinctrl *pcie_pinctrl;
struct pinctrl_state *pin_state[MAX_PCIE_PIN_STATE];
};
/* PCIe ELBI registers */
#define PCIE_IRQ_PULSE 0x000
#define IRQ_INTA_ASSERT (0x1 << 0)
#define IRQ_INTB_ASSERT (0x1 << 2)
#define IRQ_INTC_ASSERT (0x1 << 4)
#define IRQ_INTD_ASSERT (0x1 << 6)
#define IRQ_MSI_RISING_ASSERT (0x1 << 29)
#define IRQ_MSI_FALLING_ASSERT (0x1 << 28)
#define IRQ_RADM_PM_TO_ACK (0x1 << 18)
#define IRQ_L1_EXIT (0x1 << 24)
#define PCIE_IRQ_LEVEL 0x004
#define IRQ_MSI_CTRL (0x1 << 1)
#define PCIE_IRQ_SPECIAL 0x008
#define PCIE_IRQ_EN_PULSE 0x00c
#define IRQ_MSI_CTRL_EN_RISING_EDG (0x1 << 29)
#define IRQ_MSI_CTRL_EN_FALLING_EDG (0x1 << 28)
#define PCIE_IRQ_EN_LEVEL 0x010
#define IRQ_MSI_ENABLE (0x1 << 1)
#define IRQ_LINK_DOWN (0x1 << 30)
#define IRQ_LINKDOWN_ENABLE (0x1 << 30)
#define PCIE_IRQ_EN_SPECIAL 0x014
#define PCIE_SW_WAKE 0x018
#define PCIE_IRQ_LEVEL_FOR_READ 0x020
#define L1_2_IDLE_STATE (0x1 << 23)
#define IRQ_MSI_EN_CHECK(x) (((x) >> 6) & 0x1)
#define PCIE_APP_LTSSM_ENABLE 0x02c
#define PCIE_IRQ_TOE_EN_PULSE 0x030
#define PCIE_IRQ_TOE_EN_PULSE2 0x034
#define PCIE_IRQ_TOE_EN_LEVEL 0x038
#define PCIE_L1_BUG_FIX_ENABLE 0x038
#define PCIE_APP_REQ_EXIT_L1 0x040
#define PCIE_CXPL_DEBUG_INFO_H 0x070
#define PCIE_ELBI_RDLH_LINKUP 0x074
#define PCIE_ELBI_LTSSM_DISABLE 0x0
#define PCIE_ELBI_LTSSM_ENABLE 0x1
#define PCIE_PM_DSTATE 0x88
#define PCIE_D0_UNINIT_STATE 0x4
#define PCIE_APP_REQ_EXIT_L1_MODE 0xF4
#define APP_REQ_EXIT_L1_MODE 0x1
#define L1_REQ_NAK_CONTROL (0x3 << 4)
#define L1_REQ_NAK_CONTROL_MASTER (0x1 << 4)
#define PCIE_HISTORY_REG(x) (0x138 + ((x) * 0x4))
#define LTSSM_STATE(x) (((x) >> 16) & 0x3f)
#define PM_DSTATE(x) (((x) >> 8) & 0x7)
#define L1SUB_STATE(x) (((x) >> 0) & 0x7)
#define PCIE_LINKDOWN_RST_CTRL_SEL 0x1B8
#define PCIE_LINKDOWN_RST_MANUAL (0x1 << 1)
#define PCIE_LINKDOWN_RST_FSM (0x1 << 0)
#define PCIE_SOFT_AUXCLK_SEL_CTRL 0x1C4
#define CORE_CLK_GATING (0x1 << 0)
#define PCIE_SOFT_CORE_RESET 0x1D0
#define PCIE_STATE_HISTORY_CHECK 0x274
#define PCIE_STATE_POWER_S 0x2BC
#define PCIE_STATE_POWER_M 0x2C0
#define HISTORY_BUFFER_ENABLE 0x3
#define HISTORY_BUFFER_CLEAR (0x1 << 1)
#define PCIE_QCH_SEL 0x2C8
#define CLOCK_GATING_IN_L12 0x1
#define CLOCK_NOT_GATING 0x3
#define CLOCK_GATING_MASK 0x3
#define CLOCK_GATING_PMU_L1 (0x1 << 11)
#define CLOCK_GATING_PMU_L23READY (0x1 << 10)
#define CLOCK_GATING_PMU_DETECT_QUIET (0x1 << 9)
#define CLOCK_GATING_PMU_L12 (0x1 << 8)
#define CLOCK_GATING_PMU_ALL (0xF << 8)
#define CLOCK_GATING_PMU_MASK (0xF << 8)
#define CLOCK_GATING_APB_L1 (0x1 << 7)
#define CLOCK_GATING_APB_L23READY (0x1 << 6)
#define CLOCK_GATING_APB_DETECT_QUIET (0x1 << 5)
#define CLOCK_GATING_APB_L12 (0X1 << 4)
#define CLOCK_GATING_APB_ALL (0xF << 4)
#define CLOCK_GATING_APB_MASK (0xF << 4)
#define CLOCK_GATING_AXI_L1 (0x1 << 3)
#define CLOCK_GATING_AXI_L23READY (0x1 << 2)
#define CLOCK_GATING_AXI_DETECT_QUIET (0x1 << 1)
#define CLOCK_GATING_AXI_L12 (0x1 << 0)
#define CLOCK_GATING_AXI_ALL (0xF << 0)
#define CLOCK_GATING_AXI_MASK (0xF << 0)
#define PCIE_DMA_MONITOR1 0x2CC
#define PCIE_DMA_MONITOR2 0x2D0
#define PCIE_DMA_MONITOR3 0x2D4
#define FSYS1_MON_SEL_MASK 0xf
#define PCIE_MON_SEL_MASK 0xff
#define PCIE_IRQ_CP_EN_PULSE 0x2DC
#define PCIE_IRQ_CP_EN_PULSE2 0x2E0
#define PCIE_IRQ_CP_LEVEL 0x2E4
#define PCIE_MSI_STATUS_IRQ_AP_ENABLE 0x2E8
#define PCIE_MSI_STATUS_IRQ_CP_ENABLE 0x2EC
#define VENDOR_MSG_REQ 0xA8
#define VENDOR_MSG_FORMAT 0xAC
#define VENDOR_MSG_TYPE 0xB0
#define VENDOR_MSG_CODE 0xD0
#define PME_TURNOFF_CODE 0x19
#define TLP_TYPE_MSG 0x13
#define XMIT_PME_TURNOFF 0x4C
/* PCIe PMU registers */
#define IDLE_IP3_STATE 0x3EC
#define IDLE_IP_RC1_SHIFT (31)
#define IDLE_IP_RC0_SHIFT (30)
#define IDLE_IP3_MASK 0x3FC
#define PCIE_PHY_CONTROL 0x071C
#define PCIE_PHY_CONTROL_MASK 0x1
/* PCIe DBI registers */
#define PM_CAP_OFFSET 0x40
#define PCIE_CAP_OFFSET 0x70
#define PCIE_LINK_CTRL_STAT 0x80
#define PCI_EXP_LNKCAP_MLW_X1 (0x1 << 4)
#define PCI_EXP_LNKCAP_L1EL_64USEC (0x7 << 15)
#define PCI_EXP_LNKCTL2_TLS_2_5GB 0x1
#define PCI_EXP_LNKCTL2_TLS_5_0GB 0x2
#define PCI_EXP_LNKCTL2_TLS_8_0GB 0x3
#define PCIE_LINK_L1SS_CONTROL 0x158
#define PORT_LINK_TCOMMON_32US (0x20 << 8)
#define PCIE_LINK_L1SS_CONTROL2 0x15C
#define PORT_LINK_L1SS_ENABLE (0xf << 0)
#define PORT_LINK_L12_LTR_THRESHOLD (0x40a0 << 16)
#define PORT_LINK_TPOWERON_130US (0x69 << 0)
#define PORT_LINK_TPOWERON_3100US (0xfa << 0)
#define PORT_LINK_L1SS_T_PCLKACK (0x3 << 6)
#define PORT_LINK_L1SS_T_L1_2 (0x4 << 2)
#define PORT_LINK_L1SS_T_POWER_OFF (0x2 << 0)
#define PCIE_ACK_F_ASPM_CONTROL 0x70C
#define PCIE_PORT_LINK_CONTROL 0x710
#define PCIE_MISC_CONTROL 0x8BC
#define DBI_RO_WR_EN 0x1
#define PCIE_AUX_CLK_FREQ_OFF 0xB40
#define PCIE_AUX_CLK_FREQ_24MHZ 0x18
#define PCIE_AUX_CLK_FREQ_26MHZ 0x1A
#define PCIE_L1_SUBSTATES_OFF 0xB44
#define PCIE_L1_SUB_VAL 0xEA
#define PCIE_LINK_WIDTH_SPEED_CONTROL 0x80C
#define PORT_LOGIC_SPEED_CHANGE (0x1 << 17)
#define PCIE_ATU_VIEWPORT 0x900
#define PCIE_ATU_REGION_INBOUND (0x1 << 31)
#define PCIE_ATU_REGION_OUTBOUND (0x0 << 31)
#define PCIE_ATU_REGION_INDEX2 (0x2 << 0)
#define PCIE_ATU_REGION_INDEX1 (0x1 << 0)
#define PCIE_ATU_REGION_INDEX0 (0x0 << 0)
#define PCIE_ATU_CR1 0x904
#define PCIE_ATU_TYPE_MEM (0x0 << 0)
#define PCIE_ATU_TYPE_IO (0x2 << 0)
#define PCIE_ATU_TYPE_CFG0 (0x4 << 0)
#define PCIE_ATU_TYPE_CFG1 (0x5 << 0)
#define PCIE_ATU_CR2 0x908
#define PCIE_ATU_ENABLE (0x1 << 31)
#define PCIE_ATU_BAR_MODE_ENABLE (0x1 << 30)
#define PCIE_ATU_LOWER_BASE 0x90C
#define PCIE_ATU_UPPER_BASE 0x910
#define PCIE_ATU_LIMIT 0x914
#define PCIE_ATU_LOWER_TARGET 0x918
#define PCIE_ATU_BUS(x) (((x) & 0xff) << 24)
#define PCIE_ATU_DEV(x) (((x) & 0x1f) << 19)
#define PCIE_ATU_FUNC(x) (((x) & 0x7) << 16)
#define PCIE_ATU_UPPER_TARGET 0x91C
#define PCIE_MSI_ADDR_LO 0x820
#define PCIE_MSI_ADDR_HI 0x824
#define PCIE_MSI_INTR0_ENABLE 0x828
#define PCIE_MSI_INTR0_MASK 0x82C
#define PCIE_MSI_INTR0_STATUS 0x830
/* PCIe SYSREG registers */
#define PCIE_WIFI0_PCIE_PHY_CONTROL 0xC
#define BIFURCATION_MODE_DISABLE (0x1 << 16)
#define LINK1_ENABLE (0x1 << 15)
#define LINK0_ENABLE (0x1 << 14)
#define PCS_LANE1_ENABLE (0x1 << 13)
#define PCS_LANE0_ENABLE (0x1 << 12)
#define PCIE_SYSREG_SHARABILITY_CTRL 0x700
#define PCIE_SYSREG_SHARABLE_OFFSET 8
#define PCIE_SYSREG_SHARABLE_ENABLE 0x3
#define PCIE_SYSREG_SHARABLE_DISABLE 0x0
/* Definitions for WIFI L1.2 */
#define WIFI_L1SS_CAPID 0x240
#define WIFI_L1SS_CAP 0x244
#define WIFI_L1SS_CONTROL 0x248
#define WIFI_L1SS_CONTROL2 0x24C
#define WIFI_L1SS_LINKCTRL 0xBC
#define WIFI_LINK_STATUS 0xBE
#define WIFI_PM_MNG_STATUS_CON 0x4C
/* LINK Control Register */
#define WIFI_ASPM_CONTROL_MASK (0x3 << 0)
#define WIFI_ASPM_L1_ENTRY_EN (0x2 << 0)
#define WIFI_USE_SAME_REF_CLK (0x1 << 6)
#define WIFI_CLK_REQ_EN (0x1 << 8)
/* L1SSS Control Register */
#define WIFI_ALL_PM_ENABEL (0xf << 0)
#define WIFI_PCIPM_L12_EN (0x1 << 0)
#define WIFI_PCIPM_L11_EN (0x1 << 1)
#define WIFI_ASPM_L12_EN (0x1 << 2)
#define WIFI_ASPM_L11_EN (0x1 << 3)
#define WIFI_COMMON_RESTORE_TIME (0xa << 8) /* Default Value */
/* ETC definitions */
#define IGNORE_ELECIDLE 1
#define ENABLE_ELECIDLE 0
#define PCIE_DISABLE_CLOCK 0
#define PCIE_ENABLE_CLOCK 1
#define PCIE_IS_IDLE 1
#define PCIE_IS_ACTIVE 0
/* PCIe PHY definitions */
#define PHY_PLL_STATE 0xBC
#define CHK_PHY_PLL_LOCK 0x3
/* For Set NCLK OFF to avoid system hang */
#define EXYNOS_PCIE_MAX_NAME_LEN 10
#define PCIE_L12ERR_CTRL 0x2F0
#define PCIE_GEN3_L12ERR_CTRL 0x3B0
#define NCLK_OFF_OFFSET 0x2
#define GEN3A_L12ERR_CRTRL_SFR 0x131203B0
#define GEN3B_L12ERR_CRTRL_SFR 0x131303B0
void exynos_pcie_phy_init(struct pcie_port *pp);
#ifdef CONFIG_EXYNOS_PCIE_IOMMU
extern void pcie_sysmmu_enable(int ch_num);
extern void pcie_sysmmu_disable(int ch_num);
extern int pcie_iommu_map(int ch_num, unsigned long iova, phys_addr_t paddr,
size_t size, int prot);
extern size_t pcie_iommu_unmap(int ch_num, unsigned long iova, size_t size);
extern struct dma_map_ops exynos_pcie_dma_ops;
#else
static void __maybe_unused pcie_sysmmu_enable(int ch_num)
{
pr_err("PCIe SysMMU is NOT Enabled!!!\n");
}
static void __maybe_unused pcie_sysmmu_disable(int ch_num)
{
pr_err("PCIe SysMMU is NOT Enabled!!!\n");
}
static int __maybe_unused pcie_iommu_map(int ch_num, unsigned long iova, phys_addr_t paddr,
size_t size, int prot)
{
pr_err("PCIe SysMMU is NOT Enabled!!!\n");
return -ENODEV;
}
static size_t __maybe_unused pcie_iommu_unmap(int ch_num, unsigned long iova, size_t size)
{
pr_err("PCIe SysMMU is NOT Enabled!!!\n");
return -ENODEV;
}
#endif
#endif