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/* Copyright (c) 2013-2015, 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 UFS_QCOM_H_
#define UFS_QCOM_H_
#include <linux/reset-controller.h>
#define MAX_UFS_QCOM_HOSTS 1
#define MAX_U32 (~(u32)0)
#define MPHY_TX_FSM_STATE 0x41
#define TX_FSM_HIBERN8 0x1
#define HBRN8_POLL_TOUT_MS 100
#define DEFAULT_CLK_RATE_HZ 1000000
#define BUS_VECTOR_NAME_LEN 32
#define UFS_HW_VER_MAJOR_SHFT (28)
#define UFS_HW_VER_MAJOR_MASK (0x000F << UFS_HW_VER_MAJOR_SHFT)
#define UFS_HW_VER_MINOR_SHFT (16)
#define UFS_HW_VER_MINOR_MASK (0x0FFF << UFS_HW_VER_MINOR_SHFT)
#define UFS_HW_VER_STEP_SHFT (0)
#define UFS_HW_VER_STEP_MASK (0xFFFF << UFS_HW_VER_STEP_SHFT)
/* vendor specific pre-defined parameters */
#define SLOW 1
#define FAST 2
#define UFS_QCOM_LIMIT_NUM_LANES_RX 2
#define UFS_QCOM_LIMIT_NUM_LANES_TX 2
#define UFS_QCOM_LIMIT_HSGEAR_RX UFS_HS_G3
#define UFS_QCOM_LIMIT_HSGEAR_TX UFS_HS_G3
#define UFS_QCOM_LIMIT_PWMGEAR_RX UFS_PWM_G4
#define UFS_QCOM_LIMIT_PWMGEAR_TX UFS_PWM_G4
#define UFS_QCOM_LIMIT_RX_PWR_PWM SLOW_MODE
#define UFS_QCOM_LIMIT_TX_PWR_PWM SLOW_MODE
#define UFS_QCOM_LIMIT_RX_PWR_HS FAST_MODE
#define UFS_QCOM_LIMIT_TX_PWR_HS FAST_MODE
#define UFS_QCOM_LIMIT_HS_RATE PA_HS_MODE_B
#define UFS_QCOM_LIMIT_DESIRED_MODE FAST
/* QCOM UFS host controller vendor specific registers */
enum {
REG_UFS_SYS1CLK_1US = 0xC0,
REG_UFS_TX_SYMBOL_CLK_NS_US = 0xC4,
REG_UFS_LOCAL_PORT_ID_REG = 0xC8,
REG_UFS_PA_ERR_CODE = 0xCC,
REG_UFS_RETRY_TIMER_REG = 0xD0,
REG_UFS_PA_LINK_STARTUP_TIMER = 0xD8,
REG_UFS_CFG1 = 0xDC,
REG_UFS_CFG2 = 0xE0,
REG_UFS_HW_VERSION = 0xE4,
UFS_TEST_BUS = 0xE8,
UFS_TEST_BUS_CTRL_0 = 0xEC,
UFS_TEST_BUS_CTRL_1 = 0xF0,
UFS_TEST_BUS_CTRL_2 = 0xF4,
UFS_UNIPRO_CFG = 0xF8,
/*
* QCOM UFS host controller vendor specific registers
* added in HW Version 3.0.0
*/
UFS_AH8_CFG = 0xFC,
};
/* QCOM UFS host controller vendor specific debug registers */
enum {
UFS_DBG_RD_REG_UAWM = 0x100,
UFS_DBG_RD_REG_UARM = 0x200,
UFS_DBG_RD_REG_TXUC = 0x300,
UFS_DBG_RD_REG_RXUC = 0x400,
UFS_DBG_RD_REG_DFC = 0x500,
UFS_DBG_RD_REG_TRLUT = 0x600,
UFS_DBG_RD_REG_TMRLUT = 0x700,
UFS_UFS_DBG_RD_REG_OCSC = 0x800,
UFS_UFS_DBG_RD_DESC_RAM = 0x1500,
UFS_UFS_DBG_RD_PRDT_RAM = 0x1700,
UFS_UFS_DBG_RD_RESP_RAM = 0x1800,
UFS_UFS_DBG_RD_EDTL_RAM = 0x1900,
};
#define UFS_CNTLR_2_x_x_VEN_REGS_OFFSET(x) (0x000 + x)
#define UFS_CNTLR_3_x_x_VEN_REGS_OFFSET(x) (0x400 + x)
/* bit definitions for REG_UFS_CFG1 register */
#define QUNIPRO_SEL 0x1
#define UTP_DBG_RAMS_EN 0x20000
#define TEST_BUS_EN BIT(18)
#define TEST_BUS_SEL GENMASK(22, 19)
#define UFS_REG_TEST_BUS_EN BIT(30)
/* bit definitions for REG_UFS_CFG2 register */
#define UAWM_HW_CGC_EN (1 << 0)
#define UARM_HW_CGC_EN (1 << 1)
#define TXUC_HW_CGC_EN (1 << 2)
#define RXUC_HW_CGC_EN (1 << 3)
#define DFC_HW_CGC_EN (1 << 4)
#define TRLUT_HW_CGC_EN (1 << 5)
#define TMRLUT_HW_CGC_EN (1 << 6)
#define OCSC_HW_CGC_EN (1 << 7)
/* bit definition for UFS_UFS_TEST_BUS_CTRL_n */
#define TEST_BUS_SUB_SEL_MASK 0x1F /* All XXX_SEL fields are 5 bits wide */
#define REG_UFS_CFG2_CGC_EN_ALL (UAWM_HW_CGC_EN | UARM_HW_CGC_EN |\
TXUC_HW_CGC_EN | RXUC_HW_CGC_EN |\
DFC_HW_CGC_EN | TRLUT_HW_CGC_EN |\
TMRLUT_HW_CGC_EN | OCSC_HW_CGC_EN)
/* bit offset */
enum {
OFFSET_UFS_PHY_SOFT_RESET = 1,
OFFSET_CLK_NS_REG = 10,
};
/* bit masks */
enum {
MASK_UFS_PHY_SOFT_RESET = 0x2,
MASK_TX_SYMBOL_CLK_1US_REG = 0x3FF,
MASK_CLK_NS_REG = 0xFFFC00,
};
/* QCOM UFS debug print bit mask */
#define UFS_QCOM_DBG_PRINT_REGS_EN BIT(0)
#define UFS_QCOM_DBG_PRINT_ICE_REGS_EN BIT(1)
#define UFS_QCOM_DBG_PRINT_TEST_BUS_EN BIT(2)
#define UFS_QCOM_DBG_PRINT_ALL \
(UFS_QCOM_DBG_PRINT_REGS_EN | UFS_QCOM_DBG_PRINT_ICE_REGS_EN | \
UFS_QCOM_DBG_PRINT_TEST_BUS_EN)
/* QUniPro Vendor specific attributes */
#define PA_VS_CONFIG_REG1 0x9000
#define DME_VS_CORE_CLK_CTRL 0xD002
/* bit and mask definitions for DME_VS_CORE_CLK_CTRL attribute */
#define DME_VS_CORE_CLK_CTRL_CORE_CLK_DIV_EN_BIT BIT(8)
#define DME_VS_CORE_CLK_CTRL_MAX_CORE_CLK_1US_CYCLES_MASK 0xFF
static inline void
ufs_qcom_get_controller_revision(struct ufs_hba *hba,
u8 *major, u16 *minor, u16 *step)
{
u32 ver = ufshcd_readl(hba, REG_UFS_HW_VERSION);
*major = (ver & UFS_HW_VER_MAJOR_MASK) >> UFS_HW_VER_MAJOR_SHFT;
*minor = (ver & UFS_HW_VER_MINOR_MASK) >> UFS_HW_VER_MINOR_SHFT;
*step = (ver & UFS_HW_VER_STEP_MASK) >> UFS_HW_VER_STEP_SHFT;
};
static inline void ufs_qcom_assert_reset(struct ufs_hba *hba)
{
ufshcd_rmwl(hba, MASK_UFS_PHY_SOFT_RESET,
1 << OFFSET_UFS_PHY_SOFT_RESET, REG_UFS_CFG1);
/*
* Make sure assertion of ufs phy reset is written to
* register before returning
*/
mb();
}
static inline void ufs_qcom_deassert_reset(struct ufs_hba *hba)
{
ufshcd_rmwl(hba, MASK_UFS_PHY_SOFT_RESET,
0 << OFFSET_UFS_PHY_SOFT_RESET, REG_UFS_CFG1);
/*
* Make sure de-assertion of ufs phy reset is written to
* register before returning
*/
mb();
}
struct ufs_qcom_bus_vote {
uint32_t client_handle;
uint32_t curr_vote;
int min_bw_vote;
int max_bw_vote;
int saved_vote;
bool is_max_bw_needed;
struct device_attribute max_bus_bw;
};
/* Host controller hardware version: major.minor.step */
struct ufs_hw_version {
u16 step;
u16 minor;
u8 major;
};
struct ufs_qcom_testbus {
u8 select_major;
u8 select_minor;
};
struct ufs_qcom_host {
/*
* Set this capability if host controller supports the QUniPro mode
* and if driver wants the Host controller to operate in QUniPro mode.
* Note: By default this capability will be kept enabled if host
* controller supports the QUniPro mode.
*/
#define UFS_QCOM_CAP_QUNIPRO 0x1
/*
* Set this capability if host controller can retain the secure
* configuration even after UFS controller core power collapse.
*/
#define UFS_QCOM_CAP_RETAIN_SEC_CFG_AFTER_PWR_COLLAPSE 0x2
u32 caps;
struct phy *generic_phy;
struct ufs_hba *hba;
struct ufs_qcom_bus_vote bus_vote;
struct ufs_pa_layer_attr dev_req_params;
struct clk *rx_l0_sync_clk;
struct clk *tx_l0_sync_clk;
struct clk *rx_l1_sync_clk;
struct clk *tx_l1_sync_clk;
bool is_lane_clks_enabled;
void __iomem *dev_ref_clk_ctrl_mmio;
bool is_dev_ref_clk_enabled;
struct ufs_hw_version hw_ver;
u32 dev_ref_clk_en_mask;
/* Bitmask for enabling debug prints */
u32 dbg_print_en;
struct ufs_qcom_testbus testbus;
struct reset_controller_dev rcdev;
};
static inline u32
ufs_qcom_get_debug_reg_offset(struct ufs_qcom_host *host, u32 reg)
{
if (host->hw_ver.major <= 0x02)
return UFS_CNTLR_2_x_x_VEN_REGS_OFFSET(reg);
return UFS_CNTLR_3_x_x_VEN_REGS_OFFSET(reg);
};
#define ufs_qcom_is_link_off(hba) ufshcd_is_link_off(hba)
#define ufs_qcom_is_link_active(hba) ufshcd_is_link_active(hba)
#define ufs_qcom_is_link_hibern8(hba) ufshcd_is_link_hibern8(hba)
int ufs_qcom_testbus_config(struct ufs_qcom_host *host);
static inline bool ufs_qcom_cap_qunipro(struct ufs_qcom_host *host)
{
if (host->caps & UFS_QCOM_CAP_QUNIPRO)
return true;
else
return false;
}
#endif /* UFS_QCOM_H_ */
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