/* 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_H
#define __PCIE_EXYNOS_H

#define MAX_TIMEOUT		2000
#define ID_MASK			0xffff
#define MAX_RC_NUM		2

#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)	container_of(x, struct exynos_pcie, pp)

#define PCIE_BUS_PRIV_DATA(pdev) \
	((struct pcie_port *)pdev->bus->sysdata)

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);
	void (*phy_all_pwrdn)(void *phy_base_regs, void *sysreg_base_regs, int ch_num);
	void (*phy_all_pwrdn_clear)(void *phy_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 {
	void __iomem		*elbi_base;
	void __iomem		*phy_base;
	void __iomem		*block_base;
	void __iomem		*rc_dbi_base;
	void __iomem		*phy_pcs_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;
	spinlock_t		conf_lock;
	struct workqueue_struct	*pcie_wq;
	struct exynos_pcie_clks	clks;
	struct pcie_port	pp;
	struct pci_dev		*pci_dev;
	struct pci_saved_state	*pci_saved_configs;
	struct notifier_block	lpa_nb;
	struct notifier_block   ss_dma_mon_nb;
	struct delayed_work	work;
	struct exynos_pcie_register_event *event_reg;
#ifdef CONFIG_PCI_EXYNOS_TEST
	int			wlan_gpio;
	int			bt_gpio;
#endif
#ifdef CONFIG_PM_DEVFREQ
	unsigned int            int_min_lock;
#endif
	u32			ip_ver;
	struct pcie_phyops	phy_ops;
	int			pcie_irq_toe_enable;
	int			pcie_irq_toe_num;
	int			pcie_irq_msi_cp_enable;
	int			pcie_irq_msi_cp_base_bit;
	int			pcie_irq_msi_cp_num;
	int			l1ss_ctrl_id_state;
	struct workqueue_struct *pcie_wq_l1ss;
	struct delayed_work     work_l1ss;
	int			boot_cnt;
	int			work_l1ss_cnt;
};

/* 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 HISTORY_BUFFER_ENABLE		(0x1 << 0)
#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

/* 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_ID_OFFSET		0x40
#define EXP_CAP_ID_OFFSET		0x70
#define PCI_EXP_LNKCAP_MLW_X1		(0x1 << 4)
#define PCI_EXP_LNKCAP_L1EL_64USEC	(0x7 << 15)
#define PCI_EXP_LNKCTL2_TLS		0xf
#define PCI_EXP_LNKCTL2_TLS_2_5GB	0x1
#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_TPOWERON_130US	(0x69 << 0)
#define PORT_LINK_TPOWERON_3100US	(0xfa << 0)
#define PCIE_LINK_L1SS_OFF		0xb44
#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_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_EANBLE		(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

void exynos_pcie_phy_init(struct pcie_port *pp);
#endif