1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /* Copyright (c) 2013-2015, The Linux Foundation. All rights reserved.
3 */
4
5 #ifndef UFS_QCOM_H_
6 #define UFS_QCOM_H_
7
8 #include <linux/reset-controller.h>
9 #include <linux/reset.h>
10 #include <soc/qcom/ice.h>
11 #include <ufs/ufshcd.h>
12
13 #define MPHY_TX_FSM_STATE 0x41
14 #define TX_FSM_HIBERN8 0x1
15 #define HBRN8_POLL_TOUT_MS 100
16 #define DEFAULT_CLK_RATE_HZ 1000000
17 #define MAX_SUPP_MAC 64
18 #define MAX_ESI_VEC 32
19
20 #define UFS_HW_VER_MAJOR_MASK GENMASK(31, 28)
21 #define UFS_HW_VER_MINOR_MASK GENMASK(27, 16)
22 #define UFS_HW_VER_STEP_MASK GENMASK(15, 0)
23 #define UFS_DEV_VER_MAJOR_MASK GENMASK(7, 4)
24
25 #define UFS_QCOM_LIMIT_HS_RATE PA_HS_MODE_B
26
27 /* QCOM UFS host controller vendor specific registers */
28 enum {
29 REG_UFS_SYS1CLK_1US = 0xC0,
30 REG_UFS_TX_SYMBOL_CLK_NS_US = 0xC4,
31 REG_UFS_LOCAL_PORT_ID_REG = 0xC8,
32 REG_UFS_PA_ERR_CODE = 0xCC,
33 /* On older UFS revisions, this register is called "RETRY_TIMER_REG" */
34 REG_UFS_PARAM0 = 0xD0,
35 /* On older UFS revisions, this register is called "REG_UFS_PA_LINK_STARTUP_TIMER" */
36 REG_UFS_CFG0 = 0xD8,
37 REG_UFS_CFG1 = 0xDC,
38 REG_UFS_CFG2 = 0xE0,
39 REG_UFS_HW_VERSION = 0xE4,
40
41 UFS_TEST_BUS = 0xE8,
42 UFS_TEST_BUS_CTRL_0 = 0xEC,
43 UFS_TEST_BUS_CTRL_1 = 0xF0,
44 UFS_TEST_BUS_CTRL_2 = 0xF4,
45 UFS_UNIPRO_CFG = 0xF8,
46
47 /*
48 * QCOM UFS host controller vendor specific registers
49 * added in HW Version 3.0.0
50 */
51 UFS_AH8_CFG = 0xFC,
52
53 REG_UFS_MEM_ICE_CONFIG = 0x260C,
54 REG_UFS_MEM_ICE_NUM_CORE = 0x2664,
55
56 REG_UFS_CFG3 = 0x271C,
57
58 REG_UFS_DEBUG_SPARE_CFG = 0x284C,
59 };
60
61 /* QCOM UFS host controller vendor specific debug registers */
62 enum {
63 UFS_DBG_RD_REG_UAWM = 0x100,
64 UFS_DBG_RD_REG_UARM = 0x200,
65 UFS_DBG_RD_REG_TXUC = 0x300,
66 UFS_DBG_RD_REG_RXUC = 0x400,
67 UFS_DBG_RD_REG_DFC = 0x500,
68 UFS_DBG_RD_REG_TRLUT = 0x600,
69 UFS_DBG_RD_REG_TMRLUT = 0x700,
70 UFS_UFS_DBG_RD_REG_OCSC = 0x800,
71
72 UFS_UFS_DBG_RD_DESC_RAM = 0x1500,
73 UFS_UFS_DBG_RD_PRDT_RAM = 0x1700,
74 UFS_UFS_DBG_RD_RESP_RAM = 0x1800,
75 UFS_UFS_DBG_RD_EDTL_RAM = 0x1900,
76 };
77
78 enum {
79 UFS_MEM_CQIS_VS = 0x8,
80 };
81
82 #define UFS_CNTLR_2_x_x_VEN_REGS_OFFSET(x) (0x000 + x)
83 #define UFS_CNTLR_3_x_x_VEN_REGS_OFFSET(x) (0x400 + x)
84
85 /* bit definitions for REG_UFS_CFG0 register */
86 #define QUNIPRO_G4_SEL BIT(5)
87
88 /* bit definitions for REG_UFS_CFG1 register */
89 #define QUNIPRO_SEL BIT(0)
90 #define UFS_PHY_SOFT_RESET BIT(1)
91 #define UTP_DBG_RAMS_EN BIT(17)
92 #define TEST_BUS_EN BIT(18)
93 #define TEST_BUS_SEL GENMASK(22, 19)
94 #define UFS_REG_TEST_BUS_EN BIT(30)
95
96 /* bit definitions for REG_UFS_CFG2 register */
97 #define UAWM_HW_CGC_EN BIT(0)
98 #define UARM_HW_CGC_EN BIT(1)
99 #define TXUC_HW_CGC_EN BIT(2)
100 #define RXUC_HW_CGC_EN BIT(3)
101 #define DFC_HW_CGC_EN BIT(4)
102 #define TRLUT_HW_CGC_EN BIT(5)
103 #define TMRLUT_HW_CGC_EN BIT(6)
104 #define OCSC_HW_CGC_EN BIT(7)
105
106 /* bit definitions for REG_UFS_CFG3 register */
107 #define ESI_VEC_MASK GENMASK(22, 12)
108
109 /* bit definitions for REG_UFS_PARAM0 */
110 #define MAX_HS_GEAR_MASK GENMASK(6, 4)
111 #define UFS_QCOM_MAX_GEAR(x) FIELD_GET(MAX_HS_GEAR_MASK, (x))
112
113 /* bit definition for UFS_UFS_TEST_BUS_CTRL_n */
114 #define TEST_BUS_SUB_SEL_MASK GENMASK(4, 0) /* All XXX_SEL fields are 5 bits wide */
115
116 /* bit definition for UFS Shared ICE config */
117 #define UFS_QCOM_CAP_ICE_CONFIG BIT(0)
118
119 #define REG_UFS_CFG2_CGC_EN_ALL (UAWM_HW_CGC_EN | UARM_HW_CGC_EN |\
120 TXUC_HW_CGC_EN | RXUC_HW_CGC_EN |\
121 DFC_HW_CGC_EN | TRLUT_HW_CGC_EN |\
122 TMRLUT_HW_CGC_EN | OCSC_HW_CGC_EN)
123
124 /* QUniPro Vendor specific attributes */
125 #define PA_VS_CONFIG_REG1 0x9000
126 #define DME_VS_CORE_CLK_CTRL 0xD002
127 /* bit and mask definitions for DME_VS_CORE_CLK_CTRL attribute */
128 #define CLK_1US_CYCLES_MASK_V4 GENMASK(27, 16)
129 #define CLK_1US_CYCLES_MASK GENMASK(7, 0)
130 #define DME_VS_CORE_CLK_CTRL_CORE_CLK_DIV_EN_BIT BIT(8)
131 #define PA_VS_CORE_CLK_40NS_CYCLES 0x9007
132 #define PA_VS_CORE_CLK_40NS_CYCLES_MASK GENMASK(6, 0)
133
134
135 /* QCOM UFS host controller core clk frequencies */
136 #define UNIPRO_CORE_CLK_FREQ_37_5_MHZ 38
137 #define UNIPRO_CORE_CLK_FREQ_75_MHZ 75
138 #define UNIPRO_CORE_CLK_FREQ_100_MHZ 100
139 #define UNIPRO_CORE_CLK_FREQ_150_MHZ 150
140 #define UNIPRO_CORE_CLK_FREQ_300_MHZ 300
141 #define UNIPRO_CORE_CLK_FREQ_201_5_MHZ 202
142 #define UNIPRO_CORE_CLK_FREQ_403_MHZ 403
143
144 /* ICE allocator type to share AES engines among TX stream and RX stream */
145 #define ICE_ALLOCATOR_TYPE 2
146
147 /*
148 * Number of cores allocated for RX stream when Read data block received and
149 * Write data block is not in progress
150 */
151 #define NUM_RX_R1W0 28
152
153 /*
154 * Number of cores allocated for TX stream when Device asked to send write
155 * data block and Read data block is not in progress
156 */
157 #define NUM_TX_R0W1 28
158
159 /*
160 * Number of cores allocated for RX stream when Read data block received and
161 * Write data block is in progress
162 * OR
163 * Device asked to send write data block and Read data block is in progress
164 */
165 #define NUM_RX_R1W1 15
166
167 /*
168 * Number of cores allocated for TX stream (UFS write) when Read data block
169 * received and Write data block is in progress
170 * OR
171 * Device asked to send write data block and Read data block is in progress
172 */
173 #define NUM_TX_R1W1 13
174
175 static inline void
ufs_qcom_get_controller_revision(struct ufs_hba * hba,u8 * major,u16 * minor,u16 * step)176 ufs_qcom_get_controller_revision(struct ufs_hba *hba,
177 u8 *major, u16 *minor, u16 *step)
178 {
179 u32 ver = ufshcd_readl(hba, REG_UFS_HW_VERSION);
180
181 *major = FIELD_GET(UFS_HW_VER_MAJOR_MASK, ver);
182 *minor = FIELD_GET(UFS_HW_VER_MINOR_MASK, ver);
183 *step = FIELD_GET(UFS_HW_VER_STEP_MASK, ver);
184 };
185
ufs_qcom_assert_reset(struct ufs_hba * hba)186 static inline void ufs_qcom_assert_reset(struct ufs_hba *hba)
187 {
188 ufshcd_rmwl(hba, UFS_PHY_SOFT_RESET, UFS_PHY_SOFT_RESET, REG_UFS_CFG1);
189
190 /*
191 * Dummy read to ensure the write takes effect before doing any sort
192 * of delay
193 */
194 ufshcd_readl(hba, REG_UFS_CFG1);
195 }
196
ufs_qcom_deassert_reset(struct ufs_hba * hba)197 static inline void ufs_qcom_deassert_reset(struct ufs_hba *hba)
198 {
199 ufshcd_rmwl(hba, UFS_PHY_SOFT_RESET, 0, REG_UFS_CFG1);
200
201 /*
202 * Dummy read to ensure the write takes effect before doing any sort
203 * of delay
204 */
205 ufshcd_readl(hba, REG_UFS_CFG1);
206 }
207
208 /* Host controller hardware version: major.minor.step */
209 struct ufs_hw_version {
210 u16 step;
211 u16 minor;
212 u8 major;
213 };
214
215 struct ufs_qcom_testbus {
216 u8 select_major;
217 u8 select_minor;
218 };
219
220 struct gpio_desc;
221
222 struct ufs_qcom_host {
223 struct phy *generic_phy;
224 struct ufs_hba *hba;
225 struct ufs_pa_layer_attr dev_req_params;
226 struct clk_bulk_data *clks;
227 u32 num_clks;
228 bool is_lane_clks_enabled;
229
230 struct icc_path *icc_ddr;
231 struct icc_path *icc_cpu;
232
233 #ifdef CONFIG_SCSI_UFS_CRYPTO
234 struct qcom_ice *ice;
235 #endif
236 u32 caps;
237 void __iomem *dev_ref_clk_ctrl_mmio;
238 bool is_dev_ref_clk_enabled;
239 struct ufs_hw_version hw_ver;
240
241 u32 dev_ref_clk_en_mask;
242
243 struct ufs_qcom_testbus testbus;
244
245 /* Reset control of HCI */
246 struct reset_control *core_reset;
247 struct reset_controller_dev rcdev;
248
249 struct gpio_desc *device_reset;
250
251 struct ufs_host_params host_params;
252 u32 phy_gear;
253
254 bool esi_enabled;
255 };
256
257 struct ufs_qcom_drvdata {
258 enum ufshcd_quirks quirks;
259 bool no_phy_retention;
260 };
261
262 static inline u32
ufs_qcom_get_debug_reg_offset(struct ufs_qcom_host * host,u32 reg)263 ufs_qcom_get_debug_reg_offset(struct ufs_qcom_host *host, u32 reg)
264 {
265 if (host->hw_ver.major <= 0x02)
266 return UFS_CNTLR_2_x_x_VEN_REGS_OFFSET(reg);
267
268 return UFS_CNTLR_3_x_x_VEN_REGS_OFFSET(reg);
269 };
270
271 #define ufs_qcom_is_link_off(hba) ufshcd_is_link_off(hba)
272 #define ufs_qcom_is_link_active(hba) ufshcd_is_link_active(hba)
273 #define ufs_qcom_is_link_hibern8(hba) ufshcd_is_link_hibern8(hba)
274 #define ceil(freq, div) ((freq) % (div) == 0 ? ((freq)/(div)) : ((freq)/(div) + 1))
275
276 int ufs_qcom_testbus_config(struct ufs_qcom_host *host);
277
278 #endif /* UFS_QCOM_H_ */
279