1 /* SPDX-License-Identifier: MIT */
2 /*
3  * Copyright © 2022 Intel Corporation
4  */
5 
6 #ifndef __INTEL_MCHBAR_REGS__
7 #define __INTEL_MCHBAR_REGS__
8 
9 #include "i915_reg_defs.h"
10 
11 /*
12  * MCHBAR mirror.
13  *
14  * This mirrors the MCHBAR MMIO space whose location is determined by
15  * device 0 function 0's pci config register 0x44 or 0x48 and matches it in
16  * every way.  It is not accessible from the CP register read instructions.
17  *
18  * Starting from Haswell, you can't write registers using the MCHBAR mirror,
19  * just read.
20  */
21 
22 #define MCHBAR_MIRROR_BASE			0x10000
23 #define MCHBAR_MIRROR_BASE_SNB			0x140000
24 
25 #define CTG_STOLEN_RESERVED			_MMIO(MCHBAR_MIRROR_BASE + 0x34)
26 #define ELK_STOLEN_RESERVED			_MMIO(MCHBAR_MIRROR_BASE + 0x48)
27 #define   G4X_STOLEN_RESERVED_ADDR1_MASK	(0xFFFF << 16)
28 #define   G4X_STOLEN_RESERVED_ADDR2_MASK	(0xFFF << 4)
29 #define   G4X_STOLEN_RESERVED_ENABLE		(1 << 0)
30 
31 /* Pineview MCH register contains DDR3 setting */
32 #define CSHRDDR3CTL				_MMIO(MCHBAR_MIRROR_BASE + 0x1a8)
33 #define   CSHRDDR3CTL_DDR3			(1 << 2)
34 
35 /* 915-945 and GM965 MCH register controlling DRAM channel access */
36 #define DCC					_MMIO(MCHBAR_MIRROR_BASE + 0x200)
37 #define   DCC_ADDRESSING_MODE_SINGLE_CHANNEL	(0 << 0)
38 #define   DCC_ADDRESSING_MODE_DUAL_CHANNEL_ASYMMETRIC	(1 << 0)
39 #define   DCC_ADDRESSING_MODE_DUAL_CHANNEL_INTERLEAVED	(2 << 0)
40 #define   DCC_ADDRESSING_MODE_MASK		(3 << 0)
41 #define   DCC_CHANNEL_XOR_DISABLE		(1 << 10)
42 #define   DCC_CHANNEL_XOR_BIT_17		(1 << 9)
43 #define DCC2					_MMIO(MCHBAR_MIRROR_BASE + 0x204)
44 #define   DCC2_MODIFIED_ENHANCED_DISABLE	(1 << 20)
45 
46 /* 965 MCH register controlling DRAM channel configuration */
47 #define C0DRB3_BW				_MMIO(MCHBAR_MIRROR_BASE + 0x206)
48 #define C1DRB3_BW				_MMIO(MCHBAR_MIRROR_BASE + 0x606)
49 
50 /* Clocking configuration register */
51 #define CLKCFG					_MMIO(MCHBAR_MIRROR_BASE + 0xc00)
52 #define CLKCFG_FSB_400				(0 << 0)	/* hrawclk 100 */
53 #define CLKCFG_FSB_400_ALT			(5 << 0)	/* hrawclk 100 */
54 #define CLKCFG_FSB_533				(1 << 0)	/* hrawclk 133 */
55 #define CLKCFG_FSB_667				(3 << 0)	/* hrawclk 166 */
56 #define CLKCFG_FSB_800				(2 << 0)	/* hrawclk 200 */
57 #define CLKCFG_FSB_1067				(6 << 0)	/* hrawclk 266 */
58 #define CLKCFG_FSB_1067_ALT			(0 << 0)	/* hrawclk 266 */
59 #define CLKCFG_FSB_1333				(7 << 0)	/* hrawclk 333 */
60 #define CLKCFG_FSB_1333_ALT			(4 << 0)	/* hrawclk 333 */
61 #define CLKCFG_FSB_1600_ALT			(6 << 0)	/* hrawclk 400 */
62 #define CLKCFG_FSB_MASK				(7 << 0)
63 #define CLKCFG_MEM_533				(1 << 4)
64 #define CLKCFG_MEM_667				(2 << 4)
65 #define CLKCFG_MEM_800				(3 << 4)
66 #define CLKCFG_MEM_MASK				(7 << 4)
67 
68 #define HPLLVCO_MOBILE				_MMIO(MCHBAR_MIRROR_BASE + 0xc0f)
69 #define HPLLVCO					_MMIO(MCHBAR_MIRROR_BASE + 0xc38)
70 
71 #define TSC1					_MMIO(MCHBAR_MIRROR_BASE + 0x1001)
72 #define   TSE					(1 << 0)
73 #define TR1					_MMIO(MCHBAR_MIRROR_BASE + 0x1006)
74 #define TSFS					_MMIO(MCHBAR_MIRROR_BASE + 0x1020)
75 #define   TSFS_SLOPE_MASK			0x0000ff00
76 #define   TSFS_SLOPE_SHIFT			8
77 #define   TSFS_INTR_MASK			0x000000ff
78 
79 /* Memory latency timer register */
80 #define MLTR_ILK				_MMIO(MCHBAR_MIRROR_BASE + 0x1222)
81 /* the unit of memory self-refresh latency time is 0.5us */
82 #define   MLTR_WM2_MASK				REG_GENMASK(13, 8)
83 #define   MLTR_WM1_MASK				REG_GENMASK(5, 0)
84 
85 #define CSIPLL0					_MMIO(MCHBAR_MIRROR_BASE + 0x2c10)
86 #define DDRMPLL1				_MMIO(MCHBAR_MIRROR_BASE + 0x2c20)
87 
88 #define ILK_GDSR				_MMIO(MCHBAR_MIRROR_BASE + 0x2ca4)
89 #define  ILK_GRDOM_FULL				(0 << 1)
90 #define  ILK_GRDOM_RENDER			(1 << 1)
91 #define  ILK_GRDOM_MEDIA			(3 << 1)
92 #define  ILK_GRDOM_MASK				(3 << 1)
93 #define  ILK_GRDOM_RESET_ENABLE			(1 << 0)
94 
95 #define BXT_D_CR_DRP0_DUNIT8			0x1000
96 #define BXT_D_CR_DRP0_DUNIT9			0x1200
97 #define   BXT_D_CR_DRP0_DUNIT_START		8
98 #define   BXT_D_CR_DRP0_DUNIT_END		11
99 #define BXT_D_CR_DRP0_DUNIT(x)			_MMIO(MCHBAR_MIRROR_BASE_SNB + \
100 						      _PICK_EVEN((x) - 8, BXT_D_CR_DRP0_DUNIT8,\
101 								 BXT_D_CR_DRP0_DUNIT9))
102 #define   BXT_DRAM_RANK_MASK			0x3
103 #define   BXT_DRAM_RANK_SINGLE			0x1
104 #define   BXT_DRAM_RANK_DUAL			0x3
105 #define   BXT_DRAM_WIDTH_MASK			(0x3 << 4)
106 #define   BXT_DRAM_WIDTH_SHIFT			4
107 #define   BXT_DRAM_WIDTH_X8			(0x0 << 4)
108 #define   BXT_DRAM_WIDTH_X16			(0x1 << 4)
109 #define   BXT_DRAM_WIDTH_X32			(0x2 << 4)
110 #define   BXT_DRAM_WIDTH_X64			(0x3 << 4)
111 #define   BXT_DRAM_SIZE_MASK			(0x7 << 6)
112 #define   BXT_DRAM_SIZE_SHIFT			6
113 #define   BXT_DRAM_SIZE_4GBIT			(0x0 << 6)
114 #define   BXT_DRAM_SIZE_6GBIT			(0x1 << 6)
115 #define   BXT_DRAM_SIZE_8GBIT			(0x2 << 6)
116 #define   BXT_DRAM_SIZE_12GBIT			(0x3 << 6)
117 #define   BXT_DRAM_SIZE_16GBIT			(0x4 << 6)
118 #define   BXT_DRAM_TYPE_MASK			(0x7 << 22)
119 #define   BXT_DRAM_TYPE_SHIFT			22
120 #define   BXT_DRAM_TYPE_DDR3			(0x0 << 22)
121 #define   BXT_DRAM_TYPE_LPDDR3			(0x1 << 22)
122 #define   BXT_DRAM_TYPE_LPDDR4			(0x2 << 22)
123 #define   BXT_DRAM_TYPE_DDR4			(0x4 << 22)
124 
125 #define MCHBAR_CH0_CR_TC_PRE_0_0_0_MCHBAR	_MMIO(MCHBAR_MIRROR_BASE_SNB + 0x4000)
126 #define   DG1_DRAM_T_RDPRE_MASK			REG_GENMASK(16, 11)
127 #define   DG1_DRAM_T_RP_MASK			REG_GENMASK(6, 0)
128 #define MCHBAR_CH0_CR_TC_PRE_0_0_0_MCHBAR_HIGH	_MMIO(MCHBAR_MIRROR_BASE_SNB + 0x4004)
129 #define   DG1_DRAM_T_RCD_MASK			REG_GENMASK(15, 9)
130 #define   DG1_DRAM_T_RAS_MASK			REG_GENMASK(8, 1)
131 
132 #define SKL_MAD_INTER_CHANNEL_0_0_0_MCHBAR_MCMAIN	_MMIO(MCHBAR_MIRROR_BASE_SNB + 0x5000)
133 #define   SKL_DRAM_DDR_TYPE_MASK		(0x3 << 0)
134 #define   SKL_DRAM_DDR_TYPE_DDR4		(0 << 0)
135 #define   SKL_DRAM_DDR_TYPE_DDR3		(1 << 0)
136 #define   SKL_DRAM_DDR_TYPE_LPDDR3		(2 << 0)
137 #define   SKL_DRAM_DDR_TYPE_LPDDR4		(3 << 0)
138 
139 /* snb MCH registers for reading the DRAM channel configuration */
140 #define MAD_DIMM_C0				_MMIO(MCHBAR_MIRROR_BASE_SNB + 0x5004)
141 #define MAD_DIMM_C1				_MMIO(MCHBAR_MIRROR_BASE_SNB + 0x5008)
142 #define MAD_DIMM_C2				_MMIO(MCHBAR_MIRROR_BASE_SNB + 0x500C)
143 #define   MAD_DIMM_ECC_MASK			(0x3 << 24)
144 #define   MAD_DIMM_ECC_OFF			(0x0 << 24)
145 #define   MAD_DIMM_ECC_IO_ON_LOGIC_OFF		(0x1 << 24)
146 #define   MAD_DIMM_ECC_IO_OFF_LOGIC_ON		(0x2 << 24)
147 #define   MAD_DIMM_ECC_ON			(0x3 << 24)
148 #define   MAD_DIMM_ENH_INTERLEAVE		(0x1 << 22)
149 #define   MAD_DIMM_RANK_INTERLEAVE		(0x1 << 21)
150 #define   MAD_DIMM_B_WIDTH_X16			(0x1 << 20) /* X8 chips if unset */
151 #define   MAD_DIMM_A_WIDTH_X16			(0x1 << 19) /* X8 chips if unset */
152 #define   MAD_DIMM_B_DUAL_RANK			(0x1 << 18)
153 #define   MAD_DIMM_A_DUAL_RANK			(0x1 << 17)
154 #define   MAD_DIMM_A_SELECT			(0x1 << 16)
155 /* DIMM sizes are in multiples of 256mb. */
156 #define   MAD_DIMM_B_SIZE_SHIFT			8
157 #define   MAD_DIMM_B_SIZE_MASK			(0xff << MAD_DIMM_B_SIZE_SHIFT)
158 #define   MAD_DIMM_A_SIZE_SHIFT			0
159 #define   MAD_DIMM_A_SIZE_MASK			(0xff << MAD_DIMM_A_SIZE_SHIFT)
160 
161 #define SKL_MAD_DIMM_CH0_0_0_0_MCHBAR_MCMAIN	_MMIO(MCHBAR_MIRROR_BASE_SNB + 0x500C)
162 #define SKL_MAD_DIMM_CH1_0_0_0_MCHBAR_MCMAIN	_MMIO(MCHBAR_MIRROR_BASE_SNB + 0x5010)
163 #define   SKL_DRAM_S_SHIFT			16
164 #define   SKL_DRAM_SIZE_MASK			0x3F
165 #define   SKL_DRAM_WIDTH_MASK			(0x3 << 8)
166 #define   SKL_DRAM_WIDTH_SHIFT			8
167 #define   SKL_DRAM_WIDTH_X8			(0x0 << 8)
168 #define   SKL_DRAM_WIDTH_X16			(0x1 << 8)
169 #define   SKL_DRAM_WIDTH_X32			(0x2 << 8)
170 #define   SKL_DRAM_RANK_MASK			(0x1 << 10)
171 #define   SKL_DRAM_RANK_SHIFT			10
172 #define   SKL_DRAM_RANK_1			(0x0 << 10)
173 #define   SKL_DRAM_RANK_2			(0x1 << 10)
174 #define   SKL_DRAM_RANK_MASK			(0x1 << 10)
175 #define   ICL_DRAM_SIZE_MASK			0x7F
176 #define   ICL_DRAM_WIDTH_MASK			(0x3 << 7)
177 #define   ICL_DRAM_WIDTH_SHIFT			7
178 #define   ICL_DRAM_WIDTH_X8			(0x0 << 7)
179 #define   ICL_DRAM_WIDTH_X16			(0x1 << 7)
180 #define   ICL_DRAM_WIDTH_X32			(0x2 << 7)
181 #define   ICL_DRAM_RANK_MASK			(0x3 << 9)
182 #define   ICL_DRAM_RANK_SHIFT			9
183 #define   ICL_DRAM_RANK_1			(0x0 << 9)
184 #define   ICL_DRAM_RANK_2			(0x1 << 9)
185 #define   ICL_DRAM_RANK_3			(0x2 << 9)
186 #define   ICL_DRAM_RANK_4			(0x3 << 9)
187 
188 #define SA_PERF_STATUS_0_0_0_MCHBAR_PC		_MMIO(MCHBAR_MIRROR_BASE_SNB + 0x5918)
189 #define  DG1_QCLK_RATIO_MASK			REG_GENMASK(9, 2)
190 #define  DG1_QCLK_REFERENCE			REG_BIT(10)
191 
192 #define GEN6_GT_PERF_STATUS			_MMIO(MCHBAR_MIRROR_BASE_SNB + 0x5948)
193 #define GEN6_RP_STATE_LIMITS			_MMIO(MCHBAR_MIRROR_BASE_SNB + 0x5994)
194 #define GEN6_RP_STATE_CAP			_MMIO(MCHBAR_MIRROR_BASE_SNB + 0x5998)
195 #define   RP0_CAP_MASK				REG_GENMASK(7, 0)
196 #define   RP1_CAP_MASK				REG_GENMASK(15, 8)
197 #define   RPN_CAP_MASK				REG_GENMASK(23, 16)
198 
199 /* snb MCH registers for priority tuning */
200 #define MCH_SSKPD				_MMIO(MCHBAR_MIRROR_BASE_SNB + 0x5d10)
201 #define   SSKPD_NEW_WM0_MASK_HSW		REG_GENMASK64(63, 56)
202 #define   SSKPD_WM4_MASK_HSW			REG_GENMASK64(40, 32)
203 #define   SSKPD_WM3_MASK_HSW			REG_GENMASK64(28, 20)
204 #define   SSKPD_WM2_MASK_HSW			REG_GENMASK64(19, 12)
205 #define   SSKPD_WM1_MASK_HSW			REG_GENMASK64(11, 4)
206 #define   SSKPD_OLD_WM0_MASK_HSW		REG_GENMASK64(3, 0)
207 #define   SSKPD_WM3_MASK_SNB			REG_GENMASK(29, 24)
208 #define   SSKPD_WM2_MASK_SNB			REG_GENMASK(21, 16)
209 #define   SSKPD_WM1_MASK_SNB			REG_GENMASK(13, 8)
210 #define   SSKPD_WM0_MASK_SNB			REG_GENMASK(5, 0)
211 
212 /* Memory controller frequency in MCHBAR for Haswell (possible SNB+) */
213 #define DCLK					_MMIO(MCHBAR_MIRROR_BASE_SNB + 0x5e04)
214 #define SKL_MC_BIOS_DATA_0_0_0_MCHBAR_PCU	_MMIO(MCHBAR_MIRROR_BASE_SNB + 0x5e04)
215 #define   DG1_GEAR_TYPE				REG_BIT(16)
216 
217 /*
218  * Please see hsw_read_dcomp() and hsw_write_dcomp() before using this register,
219  * since on HSW we can't write to it using intel_uncore_write.
220  */
221 #define D_COMP_HSW				_MMIO(MCHBAR_MIRROR_BASE_SNB + 0x5f0c)
222 #define  D_COMP_RCOMP_IN_PROGRESS		(1 << 9)
223 #define  D_COMP_COMP_FORCE			(1 << 8)
224 #define  D_COMP_COMP_DISABLE			(1 << 0)
225 
226 #define BXT_GT_PERF_STATUS			_MMIO(MCHBAR_MIRROR_BASE_SNB + 0x7070)
227 
228 #endif /* __INTEL_MCHBAR_REGS */
229