• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * Copyright (C) 2019 Genesys Logic, Inc.
4  *
5  * Authors: Ben Chuang <ben.chuang@genesyslogic.com.tw>
6  *
7  * Version: v0.9.0 (2019-08-08)
8  */
9 
10 #include <linux/bitfield.h>
11 #include <linux/bits.h>
12 #include <linux/pci.h>
13 #include <linux/mmc/mmc.h>
14 #include <linux/delay.h>
15 #include <linux/of.h>
16 #include <linux/iopoll.h>
17 #include "sdhci.h"
18 #include "sdhci-cqhci.h"
19 #include "sdhci-pci.h"
20 #include "cqhci.h"
21 
22 /*  Genesys Logic extra registers */
23 #define SDHCI_GLI_9750_WT         0x800
24 #define   SDHCI_GLI_9750_WT_EN      BIT(0)
25 #define   GLI_9750_WT_EN_ON	    0x1
26 #define   GLI_9750_WT_EN_OFF	    0x0
27 
28 #define SDHCI_GLI_9750_CFG2          0x848
29 #define   SDHCI_GLI_9750_CFG2_L1DLY    GENMASK(28, 24)
30 #define   GLI_9750_CFG2_L1DLY_VALUE    0x1F
31 
32 #define SDHCI_GLI_9750_DRIVING      0x860
33 #define   SDHCI_GLI_9750_DRIVING_1    GENMASK(11, 0)
34 #define   SDHCI_GLI_9750_DRIVING_2    GENMASK(27, 26)
35 #define   GLI_9750_DRIVING_1_VALUE    0xFFF
36 #define   GLI_9750_DRIVING_2_VALUE    0x3
37 #define   SDHCI_GLI_9750_SEL_1        BIT(29)
38 #define   SDHCI_GLI_9750_SEL_2        BIT(31)
39 #define   SDHCI_GLI_9750_ALL_RST      (BIT(24)|BIT(25)|BIT(28)|BIT(30))
40 
41 #define SDHCI_GLI_9750_PLL	      0x864
42 #define   SDHCI_GLI_9750_PLL_LDIV       GENMASK(9, 0)
43 #define   SDHCI_GLI_9750_PLL_PDIV       GENMASK(14, 12)
44 #define   SDHCI_GLI_9750_PLL_DIR        BIT(15)
45 #define   SDHCI_GLI_9750_PLL_TX2_INV    BIT(23)
46 #define   SDHCI_GLI_9750_PLL_TX2_DLY    GENMASK(22, 20)
47 #define   GLI_9750_PLL_TX2_INV_VALUE    0x1
48 #define   GLI_9750_PLL_TX2_DLY_VALUE    0x0
49 #define   SDHCI_GLI_9750_PLLSSC_STEP    GENMASK(28, 24)
50 #define   SDHCI_GLI_9750_PLLSSC_EN      BIT(31)
51 
52 #define SDHCI_GLI_9750_PLLSSC        0x86C
53 #define   SDHCI_GLI_9750_PLLSSC_PPM    GENMASK(31, 16)
54 
55 #define SDHCI_GLI_9750_SW_CTRL      0x874
56 #define   SDHCI_GLI_9750_SW_CTRL_4    GENMASK(7, 6)
57 #define   GLI_9750_SW_CTRL_4_VALUE    0x3
58 
59 #define SDHCI_GLI_9750_MISC            0x878
60 #define   SDHCI_GLI_9750_MISC_TX1_INV    BIT(2)
61 #define   SDHCI_GLI_9750_MISC_RX_INV     BIT(3)
62 #define   SDHCI_GLI_9750_MISC_TX1_DLY    GENMASK(6, 4)
63 #define   GLI_9750_MISC_TX1_INV_VALUE    0x0
64 #define   GLI_9750_MISC_RX_INV_ON        0x1
65 #define   GLI_9750_MISC_RX_INV_OFF       0x0
66 #define   GLI_9750_MISC_RX_INV_VALUE     GLI_9750_MISC_RX_INV_OFF
67 #define   GLI_9750_MISC_TX1_DLY_VALUE    0x5
68 #define   SDHCI_GLI_9750_MISC_SSC_OFF    BIT(26)
69 
70 #define SDHCI_GLI_9750_TUNING_CONTROL	          0x540
71 #define   SDHCI_GLI_9750_TUNING_CONTROL_EN          BIT(4)
72 #define   GLI_9750_TUNING_CONTROL_EN_ON             0x1
73 #define   GLI_9750_TUNING_CONTROL_EN_OFF            0x0
74 #define   SDHCI_GLI_9750_TUNING_CONTROL_GLITCH_1    BIT(16)
75 #define   SDHCI_GLI_9750_TUNING_CONTROL_GLITCH_2    GENMASK(20, 19)
76 #define   GLI_9750_TUNING_CONTROL_GLITCH_1_VALUE    0x1
77 #define   GLI_9750_TUNING_CONTROL_GLITCH_2_VALUE    0x2
78 
79 #define SDHCI_GLI_9750_TUNING_PARAMETERS           0x544
80 #define   SDHCI_GLI_9750_TUNING_PARAMETERS_RX_DLY    GENMASK(2, 0)
81 #define   GLI_9750_TUNING_PARAMETERS_RX_DLY_VALUE    0x1
82 
83 #define SDHCI_GLI_9763E_CTRL_HS400  0x7
84 
85 #define SDHCI_GLI_9763E_HS400_ES_REG      0x52C
86 #define   SDHCI_GLI_9763E_HS400_ES_BIT      BIT(8)
87 
88 #define PCIE_GLI_9763E_VHS	 0x884
89 #define   GLI_9763E_VHS_REV	   GENMASK(19, 16)
90 #define   GLI_9763E_VHS_REV_R      0x0
91 #define   GLI_9763E_VHS_REV_M      0x1
92 #define   GLI_9763E_VHS_REV_W      0x2
93 #define PCIE_GLI_9763E_MB	 0x888
94 #define   GLI_9763E_MB_CMDQ_OFF	   BIT(19)
95 #define   GLI_9763E_MB_ERP_ON      BIT(7)
96 #define PCIE_GLI_9763E_SCR	 0x8E0
97 #define   GLI_9763E_SCR_AXI_REQ	   BIT(9)
98 
99 #define PCIE_GLI_9763E_CFG       0x8A0
100 #define   GLI_9763E_CFG_LPSN_DIS   BIT(12)
101 
102 #define PCIE_GLI_9763E_CFG2      0x8A4
103 #define   GLI_9763E_CFG2_L1DLY     GENMASK(28, 19)
104 #define   GLI_9763E_CFG2_L1DLY_MID 0x54
105 
106 #define PCIE_GLI_9763E_MMC_CTRL  0x960
107 #define   GLI_9763E_HS400_SLOW     BIT(3)
108 
109 #define PCIE_GLI_9763E_CLKRXDLY  0x934
110 #define   GLI_9763E_HS400_RXDLY    GENMASK(31, 28)
111 #define   GLI_9763E_HS400_RXDLY_5  0x5
112 
113 #define SDHCI_GLI_9763E_CQE_BASE_ADDR	 0x200
114 #define GLI_9763E_CQE_TRNS_MODE	   (SDHCI_TRNS_MULTI | \
115 				    SDHCI_TRNS_BLK_CNT_EN | \
116 				    SDHCI_TRNS_DMA)
117 
118 #define PCI_GLI_9755_WT       0x800
119 #define   PCI_GLI_9755_WT_EN    BIT(0)
120 #define   GLI_9755_WT_EN_ON     0x1
121 #define   GLI_9755_WT_EN_OFF    0x0
122 
123 #define PCI_GLI_9755_PECONF   0x44
124 #define   PCI_GLI_9755_LFCLK    GENMASK(14, 12)
125 #define   PCI_GLI_9755_DMACLK   BIT(29)
126 #define   PCI_GLI_9755_INVERT_CD  BIT(30)
127 #define   PCI_GLI_9755_INVERT_WP  BIT(31)
128 
129 #define PCI_GLI_9755_CFG2          0x48
130 #define   PCI_GLI_9755_CFG2_L1DLY    GENMASK(28, 24)
131 #define   GLI_9755_CFG2_L1DLY_VALUE  0x1F
132 
133 #define PCI_GLI_9755_PLL            0x64
134 #define   PCI_GLI_9755_PLL_LDIV       GENMASK(9, 0)
135 #define   PCI_GLI_9755_PLL_PDIV       GENMASK(14, 12)
136 #define   PCI_GLI_9755_PLL_DIR        BIT(15)
137 #define   PCI_GLI_9755_PLLSSC_STEP    GENMASK(28, 24)
138 #define   PCI_GLI_9755_PLLSSC_EN      BIT(31)
139 
140 #define PCI_GLI_9755_PLLSSC        0x68
141 #define   PCI_GLI_9755_PLLSSC_PPM    GENMASK(15, 0)
142 
143 #define PCI_GLI_9755_SerDes  0x70
144 #define PCI_GLI_9755_SCP_DIS   BIT(19)
145 
146 #define PCI_GLI_9755_MISC	    0x78
147 #define   PCI_GLI_9755_MISC_SSC_OFF    BIT(26)
148 
149 #define SDHCI_GLI_9767_GM_BURST_SIZE			0x510
150 #define   SDHCI_GLI_9767_GM_BURST_SIZE_AXI_ALWAYS_SET	  BIT(8)
151 
152 #define PCIE_GLI_9767_VHS	0x884
153 #define   GLI_9767_VHS_REV	  GENMASK(19, 16)
154 #define   GLI_9767_VHS_REV_R	  0x0
155 #define   GLI_9767_VHS_REV_M	  0x1
156 #define   GLI_9767_VHS_REV_W	  0x2
157 
158 #define PCIE_GLI_9767_COM_MAILBOX		0x888
159 #define   PCIE_GLI_9767_COM_MAILBOX_SSC_EN	  BIT(1)
160 
161 #define PCIE_GLI_9767_CFG		0x8A0
162 #define   PCIE_GLI_9767_CFG_LOW_PWR_OFF	  BIT(12)
163 
164 #define PCIE_GLI_9767_COMBO_MUX_CTL			0x8C8
165 #define   PCIE_GLI_9767_COMBO_MUX_CTL_RST_EN		  BIT(6)
166 #define   PCIE_GLI_9767_COMBO_MUX_CTL_WAIT_PERST_EN	  BIT(10)
167 
168 #define PCIE_GLI_9767_PWR_MACRO_CTL					0x8D0
169 #define   PCIE_GLI_9767_PWR_MACRO_CTL_LOW_VOLTAGE			  GENMASK(3, 0)
170 #define   PCIE_GLI_9767_PWR_MACRO_CTL_LD0_LOW_OUTPUT_VOLTAGE		  GENMASK(15, 12)
171 #define   PCIE_GLI_9767_PWR_MACRO_CTL_LD0_LOW_OUTPUT_VOLTAGE_VALUE	  0x7
172 #define   PCIE_GLI_9767_PWR_MACRO_CTL_RCLK_AMPLITUDE_CTL		  GENMASK(29, 28)
173 #define   PCIE_GLI_9767_PWR_MACRO_CTL_RCLK_AMPLITUDE_CTL_VALUE		  0x3
174 
175 #define PCIE_GLI_9767_SCR				0x8E0
176 #define   PCIE_GLI_9767_SCR_AUTO_AXI_W_BURST		  BIT(6)
177 #define   PCIE_GLI_9767_SCR_AUTO_AXI_R_BURST		  BIT(7)
178 #define   PCIE_GLI_9767_SCR_AXI_REQ			  BIT(9)
179 #define   PCIE_GLI_9767_SCR_CARD_DET_PWR_SAVING_EN	  BIT(10)
180 #define   PCIE_GLI_9767_SCR_SYSTEM_CLK_SELECT_MODE0	  BIT(16)
181 #define   PCIE_GLI_9767_SCR_SYSTEM_CLK_SELECT_MODE1	  BIT(17)
182 #define   PCIE_GLI_9767_SCR_CORE_PWR_D3_OFF		  BIT(21)
183 #define   PCIE_GLI_9767_SCR_CFG_RST_DATA_LINK_DOWN	  BIT(30)
184 
185 #define PCIE_GLI_9767_SDHC_CAP			0x91C
186 #define   PCIE_GLI_9767_SDHC_CAP_SDEI_RESULT	  BIT(5)
187 
188 #define PCIE_GLI_9767_SD_PLL_CTL			0x938
189 #define   PCIE_GLI_9767_SD_PLL_CTL_PLL_LDIV		  GENMASK(9, 0)
190 #define   PCIE_GLI_9767_SD_PLL_CTL_PLL_PDIV		  GENMASK(15, 12)
191 #define   PCIE_GLI_9767_SD_PLL_CTL_PLL_DIR_EN		  BIT(16)
192 #define   PCIE_GLI_9767_SD_PLL_CTL_SSC_EN		  BIT(19)
193 #define   PCIE_GLI_9767_SD_PLL_CTL_SSC_STEP_SETTING	  GENMASK(28, 24)
194 
195 #define PCIE_GLI_9767_SD_PLL_CTL2		0x93C
196 #define   PCIE_GLI_9767_SD_PLL_CTL2_PLLSSC_PPM	  GENMASK(31, 16)
197 
198 #define PCIE_GLI_9767_SD_EXPRESS_CTL			0x940
199 #define   PCIE_GLI_9767_SD_EXPRESS_CTL_SDEI_EXE		  BIT(0)
200 #define   PCIE_GLI_9767_SD_EXPRESS_CTL_SD_EXPRESS_MODE	  BIT(1)
201 
202 #define PCIE_GLI_9767_SD_DATA_MULTI_CTL				0x944
203 #define   PCIE_GLI_9767_SD_DATA_MULTI_CTL_DISCONNECT_TIME	  GENMASK(23, 16)
204 #define   PCIE_GLI_9767_SD_DATA_MULTI_CTL_DISCONNECT_TIME_VALUE	  0x64
205 
206 #define PCIE_GLI_9767_NORMAL_ERR_INT_STATUS_REG2			0x950
207 #define   PCIE_GLI_9767_NORMAL_ERR_INT_STATUS_REG2_SDEI_COMPLETE	  BIT(0)
208 
209 #define PCIE_GLI_9767_NORMAL_ERR_INT_STATUS_EN_REG2				0x954
210 #define   PCIE_GLI_9767_NORMAL_ERR_INT_STATUS_EN_REG2_SDEI_COMPLETE_STATUS_EN	  BIT(0)
211 
212 #define PCIE_GLI_9767_NORMAL_ERR_INT_SIGNAL_EN_REG2				0x958
213 #define   PCIE_GLI_9767_NORMAL_ERR_INT_SIGNAL_EN_REG2_SDEI_COMPLETE_SIGNAL_EN	  BIT(0)
214 
215 #define GLI_MAX_TUNING_LOOP 40
216 
217 /* Genesys Logic chipset */
sdhci_gli_mask_replay_timer_timeout(struct pci_dev * pdev)218 static void sdhci_gli_mask_replay_timer_timeout(struct pci_dev *pdev)
219 {
220 	int aer;
221 	u32 value;
222 
223 	/* mask the replay timer timeout of AER */
224 	aer = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_ERR);
225 	if (aer) {
226 		pci_read_config_dword(pdev, aer + PCI_ERR_COR_MASK, &value);
227 		value |= PCI_ERR_COR_REP_TIMER;
228 		pci_write_config_dword(pdev, aer + PCI_ERR_COR_MASK, value);
229 	}
230 }
231 
gl9750_wt_on(struct sdhci_host * host)232 static inline void gl9750_wt_on(struct sdhci_host *host)
233 {
234 	u32 wt_value;
235 	u32 wt_enable;
236 
237 	wt_value = sdhci_readl(host, SDHCI_GLI_9750_WT);
238 	wt_enable = FIELD_GET(SDHCI_GLI_9750_WT_EN, wt_value);
239 
240 	if (wt_enable == GLI_9750_WT_EN_ON)
241 		return;
242 
243 	wt_value &= ~SDHCI_GLI_9750_WT_EN;
244 	wt_value |= FIELD_PREP(SDHCI_GLI_9750_WT_EN, GLI_9750_WT_EN_ON);
245 
246 	sdhci_writel(host, wt_value, SDHCI_GLI_9750_WT);
247 }
248 
gl9750_wt_off(struct sdhci_host * host)249 static inline void gl9750_wt_off(struct sdhci_host *host)
250 {
251 	u32 wt_value;
252 	u32 wt_enable;
253 
254 	wt_value = sdhci_readl(host, SDHCI_GLI_9750_WT);
255 	wt_enable = FIELD_GET(SDHCI_GLI_9750_WT_EN, wt_value);
256 
257 	if (wt_enable == GLI_9750_WT_EN_OFF)
258 		return;
259 
260 	wt_value &= ~SDHCI_GLI_9750_WT_EN;
261 	wt_value |= FIELD_PREP(SDHCI_GLI_9750_WT_EN, GLI_9750_WT_EN_OFF);
262 
263 	sdhci_writel(host, wt_value, SDHCI_GLI_9750_WT);
264 }
265 
gli_set_9750(struct sdhci_host * host)266 static void gli_set_9750(struct sdhci_host *host)
267 {
268 	u32 driving_value;
269 	u32 pll_value;
270 	u32 sw_ctrl_value;
271 	u32 misc_value;
272 	u32 parameter_value;
273 	u32 control_value;
274 	u16 ctrl2;
275 
276 	gl9750_wt_on(host);
277 
278 	driving_value = sdhci_readl(host, SDHCI_GLI_9750_DRIVING);
279 	pll_value = sdhci_readl(host, SDHCI_GLI_9750_PLL);
280 	sw_ctrl_value = sdhci_readl(host, SDHCI_GLI_9750_SW_CTRL);
281 	misc_value = sdhci_readl(host, SDHCI_GLI_9750_MISC);
282 	parameter_value = sdhci_readl(host, SDHCI_GLI_9750_TUNING_PARAMETERS);
283 	control_value = sdhci_readl(host, SDHCI_GLI_9750_TUNING_CONTROL);
284 
285 	driving_value &= ~(SDHCI_GLI_9750_DRIVING_1);
286 	driving_value &= ~(SDHCI_GLI_9750_DRIVING_2);
287 	driving_value |= FIELD_PREP(SDHCI_GLI_9750_DRIVING_1,
288 				    GLI_9750_DRIVING_1_VALUE);
289 	driving_value |= FIELD_PREP(SDHCI_GLI_9750_DRIVING_2,
290 				    GLI_9750_DRIVING_2_VALUE);
291 	driving_value &= ~(SDHCI_GLI_9750_SEL_1|SDHCI_GLI_9750_SEL_2|SDHCI_GLI_9750_ALL_RST);
292 	driving_value |= SDHCI_GLI_9750_SEL_2;
293 	sdhci_writel(host, driving_value, SDHCI_GLI_9750_DRIVING);
294 
295 	sw_ctrl_value &= ~SDHCI_GLI_9750_SW_CTRL_4;
296 	sw_ctrl_value |= FIELD_PREP(SDHCI_GLI_9750_SW_CTRL_4,
297 				    GLI_9750_SW_CTRL_4_VALUE);
298 	sdhci_writel(host, sw_ctrl_value, SDHCI_GLI_9750_SW_CTRL);
299 
300 	/* reset the tuning flow after reinit and before starting tuning */
301 	pll_value &= ~SDHCI_GLI_9750_PLL_TX2_INV;
302 	pll_value &= ~SDHCI_GLI_9750_PLL_TX2_DLY;
303 	pll_value |= FIELD_PREP(SDHCI_GLI_9750_PLL_TX2_INV,
304 				GLI_9750_PLL_TX2_INV_VALUE);
305 	pll_value |= FIELD_PREP(SDHCI_GLI_9750_PLL_TX2_DLY,
306 				GLI_9750_PLL_TX2_DLY_VALUE);
307 
308 	misc_value &= ~SDHCI_GLI_9750_MISC_TX1_INV;
309 	misc_value &= ~SDHCI_GLI_9750_MISC_RX_INV;
310 	misc_value &= ~SDHCI_GLI_9750_MISC_TX1_DLY;
311 	misc_value |= FIELD_PREP(SDHCI_GLI_9750_MISC_TX1_INV,
312 				 GLI_9750_MISC_TX1_INV_VALUE);
313 	misc_value |= FIELD_PREP(SDHCI_GLI_9750_MISC_RX_INV,
314 				 GLI_9750_MISC_RX_INV_VALUE);
315 	misc_value |= FIELD_PREP(SDHCI_GLI_9750_MISC_TX1_DLY,
316 				 GLI_9750_MISC_TX1_DLY_VALUE);
317 
318 	parameter_value &= ~SDHCI_GLI_9750_TUNING_PARAMETERS_RX_DLY;
319 	parameter_value |= FIELD_PREP(SDHCI_GLI_9750_TUNING_PARAMETERS_RX_DLY,
320 				      GLI_9750_TUNING_PARAMETERS_RX_DLY_VALUE);
321 
322 	control_value &= ~SDHCI_GLI_9750_TUNING_CONTROL_GLITCH_1;
323 	control_value &= ~SDHCI_GLI_9750_TUNING_CONTROL_GLITCH_2;
324 	control_value |= FIELD_PREP(SDHCI_GLI_9750_TUNING_CONTROL_GLITCH_1,
325 				    GLI_9750_TUNING_CONTROL_GLITCH_1_VALUE);
326 	control_value |= FIELD_PREP(SDHCI_GLI_9750_TUNING_CONTROL_GLITCH_2,
327 				    GLI_9750_TUNING_CONTROL_GLITCH_2_VALUE);
328 
329 	sdhci_writel(host, pll_value, SDHCI_GLI_9750_PLL);
330 	sdhci_writel(host, misc_value, SDHCI_GLI_9750_MISC);
331 
332 	/* disable tuned clk */
333 	ctrl2 = sdhci_readw(host, SDHCI_HOST_CONTROL2);
334 	ctrl2 &= ~SDHCI_CTRL_TUNED_CLK;
335 	sdhci_writew(host, ctrl2, SDHCI_HOST_CONTROL2);
336 
337 	/* enable tuning parameters control */
338 	control_value &= ~SDHCI_GLI_9750_TUNING_CONTROL_EN;
339 	control_value |= FIELD_PREP(SDHCI_GLI_9750_TUNING_CONTROL_EN,
340 				    GLI_9750_TUNING_CONTROL_EN_ON);
341 	sdhci_writel(host, control_value, SDHCI_GLI_9750_TUNING_CONTROL);
342 
343 	/* write tuning parameters */
344 	sdhci_writel(host, parameter_value, SDHCI_GLI_9750_TUNING_PARAMETERS);
345 
346 	/* disable tuning parameters control */
347 	control_value &= ~SDHCI_GLI_9750_TUNING_CONTROL_EN;
348 	control_value |= FIELD_PREP(SDHCI_GLI_9750_TUNING_CONTROL_EN,
349 				    GLI_9750_TUNING_CONTROL_EN_OFF);
350 	sdhci_writel(host, control_value, SDHCI_GLI_9750_TUNING_CONTROL);
351 
352 	/* clear tuned clk */
353 	ctrl2 = sdhci_readw(host, SDHCI_HOST_CONTROL2);
354 	ctrl2 &= ~SDHCI_CTRL_TUNED_CLK;
355 	sdhci_writew(host, ctrl2, SDHCI_HOST_CONTROL2);
356 
357 	gl9750_wt_off(host);
358 }
359 
gli_set_9750_rx_inv(struct sdhci_host * host,bool b)360 static void gli_set_9750_rx_inv(struct sdhci_host *host, bool b)
361 {
362 	u32 misc_value;
363 
364 	gl9750_wt_on(host);
365 
366 	misc_value = sdhci_readl(host, SDHCI_GLI_9750_MISC);
367 	misc_value &= ~SDHCI_GLI_9750_MISC_RX_INV;
368 	if (b) {
369 		misc_value |= FIELD_PREP(SDHCI_GLI_9750_MISC_RX_INV,
370 					 GLI_9750_MISC_RX_INV_ON);
371 	} else {
372 		misc_value |= FIELD_PREP(SDHCI_GLI_9750_MISC_RX_INV,
373 					 GLI_9750_MISC_RX_INV_OFF);
374 	}
375 	sdhci_writel(host, misc_value, SDHCI_GLI_9750_MISC);
376 
377 	gl9750_wt_off(host);
378 }
379 
__sdhci_execute_tuning_9750(struct sdhci_host * host,u32 opcode)380 static int __sdhci_execute_tuning_9750(struct sdhci_host *host, u32 opcode)
381 {
382 	int i;
383 	int rx_inv;
384 
385 	for (rx_inv = 0; rx_inv < 2; rx_inv++) {
386 		gli_set_9750_rx_inv(host, !!rx_inv);
387 		sdhci_start_tuning(host);
388 
389 		for (i = 0; i < GLI_MAX_TUNING_LOOP; i++) {
390 			u16 ctrl;
391 
392 			sdhci_send_tuning(host, opcode);
393 
394 			if (!host->tuning_done) {
395 				sdhci_abort_tuning(host, opcode);
396 				break;
397 			}
398 
399 			ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2);
400 			if (!(ctrl & SDHCI_CTRL_EXEC_TUNING)) {
401 				if (ctrl & SDHCI_CTRL_TUNED_CLK)
402 					return 0; /* Success! */
403 				break;
404 			}
405 		}
406 	}
407 	if (!host->tuning_done) {
408 		pr_info("%s: Tuning timeout, falling back to fixed sampling clock\n",
409 			mmc_hostname(host->mmc));
410 		return -ETIMEDOUT;
411 	}
412 
413 	pr_info("%s: Tuning failed, falling back to fixed sampling clock\n",
414 		mmc_hostname(host->mmc));
415 	sdhci_reset_tuning(host);
416 
417 	return -EAGAIN;
418 }
419 
gl9750_execute_tuning(struct sdhci_host * host,u32 opcode)420 static int gl9750_execute_tuning(struct sdhci_host *host, u32 opcode)
421 {
422 	host->mmc->retune_period = 0;
423 	if (host->tuning_mode == SDHCI_TUNING_MODE_1)
424 		host->mmc->retune_period = host->tuning_count;
425 
426 	gli_set_9750(host);
427 	host->tuning_err = __sdhci_execute_tuning_9750(host, opcode);
428 	sdhci_end_tuning(host);
429 
430 	return 0;
431 }
432 
gl9750_disable_ssc_pll(struct sdhci_host * host)433 static void gl9750_disable_ssc_pll(struct sdhci_host *host)
434 {
435 	u32 pll;
436 
437 	gl9750_wt_on(host);
438 	pll = sdhci_readl(host, SDHCI_GLI_9750_PLL);
439 	pll &= ~(SDHCI_GLI_9750_PLL_DIR | SDHCI_GLI_9750_PLLSSC_EN);
440 	sdhci_writel(host, pll, SDHCI_GLI_9750_PLL);
441 	gl9750_wt_off(host);
442 }
443 
gl9750_set_pll(struct sdhci_host * host,u8 dir,u16 ldiv,u8 pdiv)444 static void gl9750_set_pll(struct sdhci_host *host, u8 dir, u16 ldiv, u8 pdiv)
445 {
446 	u32 pll;
447 
448 	gl9750_wt_on(host);
449 	pll = sdhci_readl(host, SDHCI_GLI_9750_PLL);
450 	pll &= ~(SDHCI_GLI_9750_PLL_LDIV |
451 		 SDHCI_GLI_9750_PLL_PDIV |
452 		 SDHCI_GLI_9750_PLL_DIR);
453 	pll |= FIELD_PREP(SDHCI_GLI_9750_PLL_LDIV, ldiv) |
454 	       FIELD_PREP(SDHCI_GLI_9750_PLL_PDIV, pdiv) |
455 	       FIELD_PREP(SDHCI_GLI_9750_PLL_DIR, dir);
456 	sdhci_writel(host, pll, SDHCI_GLI_9750_PLL);
457 	gl9750_wt_off(host);
458 
459 	/* wait for pll stable */
460 	mdelay(1);
461 }
462 
gl9750_ssc_enable(struct sdhci_host * host)463 static bool gl9750_ssc_enable(struct sdhci_host *host)
464 {
465 	u32 misc;
466 	u8 off;
467 
468 	gl9750_wt_on(host);
469 	misc = sdhci_readl(host, SDHCI_GLI_9750_MISC);
470 	off = FIELD_GET(SDHCI_GLI_9750_MISC_SSC_OFF, misc);
471 	gl9750_wt_off(host);
472 
473 	return !off;
474 }
475 
gl9750_set_ssc(struct sdhci_host * host,u8 enable,u8 step,u16 ppm)476 static void gl9750_set_ssc(struct sdhci_host *host, u8 enable, u8 step, u16 ppm)
477 {
478 	u32 pll;
479 	u32 ssc;
480 
481 	gl9750_wt_on(host);
482 	pll = sdhci_readl(host, SDHCI_GLI_9750_PLL);
483 	ssc = sdhci_readl(host, SDHCI_GLI_9750_PLLSSC);
484 	pll &= ~(SDHCI_GLI_9750_PLLSSC_STEP |
485 		 SDHCI_GLI_9750_PLLSSC_EN);
486 	ssc &= ~SDHCI_GLI_9750_PLLSSC_PPM;
487 	pll |= FIELD_PREP(SDHCI_GLI_9750_PLLSSC_STEP, step) |
488 	       FIELD_PREP(SDHCI_GLI_9750_PLLSSC_EN, enable);
489 	ssc |= FIELD_PREP(SDHCI_GLI_9750_PLLSSC_PPM, ppm);
490 	sdhci_writel(host, ssc, SDHCI_GLI_9750_PLLSSC);
491 	sdhci_writel(host, pll, SDHCI_GLI_9750_PLL);
492 	gl9750_wt_off(host);
493 }
494 
gl9750_set_ssc_pll_205mhz(struct sdhci_host * host)495 static void gl9750_set_ssc_pll_205mhz(struct sdhci_host *host)
496 {
497 	bool enable = gl9750_ssc_enable(host);
498 
499 	/* set pll to 205MHz and ssc */
500 	gl9750_set_ssc(host, enable, 0xF, 0x5A1D);
501 	gl9750_set_pll(host, 0x1, 0x246, 0x0);
502 }
503 
gl9750_set_ssc_pll_100mhz(struct sdhci_host * host)504 static void gl9750_set_ssc_pll_100mhz(struct sdhci_host *host)
505 {
506 	bool enable = gl9750_ssc_enable(host);
507 
508 	/* set pll to 100MHz and ssc */
509 	gl9750_set_ssc(host, enable, 0xE, 0x51EC);
510 	gl9750_set_pll(host, 0x1, 0x244, 0x1);
511 }
512 
gl9750_set_ssc_pll_50mhz(struct sdhci_host * host)513 static void gl9750_set_ssc_pll_50mhz(struct sdhci_host *host)
514 {
515 	bool enable = gl9750_ssc_enable(host);
516 
517 	/* set pll to 50MHz and ssc */
518 	gl9750_set_ssc(host, enable, 0xE, 0x51EC);
519 	gl9750_set_pll(host, 0x1, 0x244, 0x3);
520 }
521 
sdhci_gl9750_set_clock(struct sdhci_host * host,unsigned int clock)522 static void sdhci_gl9750_set_clock(struct sdhci_host *host, unsigned int clock)
523 {
524 	struct mmc_ios *ios = &host->mmc->ios;
525 	u16 clk;
526 
527 	host->mmc->actual_clock = 0;
528 
529 	gl9750_disable_ssc_pll(host);
530 	sdhci_writew(host, 0, SDHCI_CLOCK_CONTROL);
531 
532 	if (clock == 0)
533 		return;
534 
535 	clk = sdhci_calc_clk(host, clock, &host->mmc->actual_clock);
536 	if (clock == 200000000 && ios->timing == MMC_TIMING_UHS_SDR104) {
537 		host->mmc->actual_clock = 205000000;
538 		gl9750_set_ssc_pll_205mhz(host);
539 	} else if (clock == 100000000) {
540 		gl9750_set_ssc_pll_100mhz(host);
541 	} else if (clock == 50000000) {
542 		gl9750_set_ssc_pll_50mhz(host);
543 	}
544 
545 	sdhci_enable_clk(host, clk);
546 }
547 
gl9750_hw_setting(struct sdhci_host * host)548 static void gl9750_hw_setting(struct sdhci_host *host)
549 {
550 	struct sdhci_pci_slot *slot = sdhci_priv(host);
551 	struct pci_dev *pdev;
552 	u32 value;
553 
554 	pdev = slot->chip->pdev;
555 
556 	gl9750_wt_on(host);
557 
558 	value = sdhci_readl(host, SDHCI_GLI_9750_CFG2);
559 	value &= ~SDHCI_GLI_9750_CFG2_L1DLY;
560 	/* set ASPM L1 entry delay to 7.9us */
561 	value |= FIELD_PREP(SDHCI_GLI_9750_CFG2_L1DLY,
562 			    GLI_9750_CFG2_L1DLY_VALUE);
563 	sdhci_writel(host, value, SDHCI_GLI_9750_CFG2);
564 
565 	/* toggle PM state to allow GL9750 to enter ASPM L1.2 */
566 	pci_set_power_state(pdev, PCI_D3hot);
567 	pci_set_power_state(pdev, PCI_D0);
568 
569 	/* mask the replay timer timeout of AER */
570 	sdhci_gli_mask_replay_timer_timeout(pdev);
571 
572 	gl9750_wt_off(host);
573 }
574 
gli_pcie_enable_msi(struct sdhci_pci_slot * slot)575 static void gli_pcie_enable_msi(struct sdhci_pci_slot *slot)
576 {
577 	int ret;
578 
579 	ret = pci_alloc_irq_vectors(slot->chip->pdev, 1, 1,
580 				    PCI_IRQ_MSI | PCI_IRQ_MSIX);
581 	if (ret < 0) {
582 		pr_warn("%s: enable PCI MSI failed, error=%d\n",
583 		       mmc_hostname(slot->host->mmc), ret);
584 		return;
585 	}
586 
587 	slot->host->irq = pci_irq_vector(slot->chip->pdev, 0);
588 }
589 
gl9755_wt_on(struct pci_dev * pdev)590 static inline void gl9755_wt_on(struct pci_dev *pdev)
591 {
592 	u32 wt_value;
593 	u32 wt_enable;
594 
595 	pci_read_config_dword(pdev, PCI_GLI_9755_WT, &wt_value);
596 	wt_enable = FIELD_GET(PCI_GLI_9755_WT_EN, wt_value);
597 
598 	if (wt_enable == GLI_9755_WT_EN_ON)
599 		return;
600 
601 	wt_value &= ~PCI_GLI_9755_WT_EN;
602 	wt_value |= FIELD_PREP(PCI_GLI_9755_WT_EN, GLI_9755_WT_EN_ON);
603 
604 	pci_write_config_dword(pdev, PCI_GLI_9755_WT, wt_value);
605 }
606 
gl9755_wt_off(struct pci_dev * pdev)607 static inline void gl9755_wt_off(struct pci_dev *pdev)
608 {
609 	u32 wt_value;
610 	u32 wt_enable;
611 
612 	pci_read_config_dword(pdev, PCI_GLI_9755_WT, &wt_value);
613 	wt_enable = FIELD_GET(PCI_GLI_9755_WT_EN, wt_value);
614 
615 	if (wt_enable == GLI_9755_WT_EN_OFF)
616 		return;
617 
618 	wt_value &= ~PCI_GLI_9755_WT_EN;
619 	wt_value |= FIELD_PREP(PCI_GLI_9755_WT_EN, GLI_9755_WT_EN_OFF);
620 
621 	pci_write_config_dword(pdev, PCI_GLI_9755_WT, wt_value);
622 }
623 
gl9755_disable_ssc_pll(struct pci_dev * pdev)624 static void gl9755_disable_ssc_pll(struct pci_dev *pdev)
625 {
626 	u32 pll;
627 
628 	gl9755_wt_on(pdev);
629 	pci_read_config_dword(pdev, PCI_GLI_9755_PLL, &pll);
630 	pll &= ~(PCI_GLI_9755_PLL_DIR | PCI_GLI_9755_PLLSSC_EN);
631 	pci_write_config_dword(pdev, PCI_GLI_9755_PLL, pll);
632 	gl9755_wt_off(pdev);
633 }
634 
gl9755_set_pll(struct pci_dev * pdev,u8 dir,u16 ldiv,u8 pdiv)635 static void gl9755_set_pll(struct pci_dev *pdev, u8 dir, u16 ldiv, u8 pdiv)
636 {
637 	u32 pll;
638 
639 	gl9755_wt_on(pdev);
640 	pci_read_config_dword(pdev, PCI_GLI_9755_PLL, &pll);
641 	pll &= ~(PCI_GLI_9755_PLL_LDIV |
642 		 PCI_GLI_9755_PLL_PDIV |
643 		 PCI_GLI_9755_PLL_DIR);
644 	pll |= FIELD_PREP(PCI_GLI_9755_PLL_LDIV, ldiv) |
645 	       FIELD_PREP(PCI_GLI_9755_PLL_PDIV, pdiv) |
646 	       FIELD_PREP(PCI_GLI_9755_PLL_DIR, dir);
647 	pci_write_config_dword(pdev, PCI_GLI_9755_PLL, pll);
648 	gl9755_wt_off(pdev);
649 
650 	/* wait for pll stable */
651 	mdelay(1);
652 }
653 
gl9755_ssc_enable(struct pci_dev * pdev)654 static bool gl9755_ssc_enable(struct pci_dev *pdev)
655 {
656 	u32 misc;
657 	u8 off;
658 
659 	gl9755_wt_on(pdev);
660 	pci_read_config_dword(pdev, PCI_GLI_9755_MISC, &misc);
661 	off = FIELD_GET(PCI_GLI_9755_MISC_SSC_OFF, misc);
662 	gl9755_wt_off(pdev);
663 
664 	return !off;
665 }
666 
gl9755_set_ssc(struct pci_dev * pdev,u8 enable,u8 step,u16 ppm)667 static void gl9755_set_ssc(struct pci_dev *pdev, u8 enable, u8 step, u16 ppm)
668 {
669 	u32 pll;
670 	u32 ssc;
671 
672 	gl9755_wt_on(pdev);
673 	pci_read_config_dword(pdev, PCI_GLI_9755_PLL, &pll);
674 	pci_read_config_dword(pdev, PCI_GLI_9755_PLLSSC, &ssc);
675 	pll &= ~(PCI_GLI_9755_PLLSSC_STEP |
676 		 PCI_GLI_9755_PLLSSC_EN);
677 	ssc &= ~PCI_GLI_9755_PLLSSC_PPM;
678 	pll |= FIELD_PREP(PCI_GLI_9755_PLLSSC_STEP, step) |
679 	       FIELD_PREP(PCI_GLI_9755_PLLSSC_EN, enable);
680 	ssc |= FIELD_PREP(PCI_GLI_9755_PLLSSC_PPM, ppm);
681 	pci_write_config_dword(pdev, PCI_GLI_9755_PLLSSC, ssc);
682 	pci_write_config_dword(pdev, PCI_GLI_9755_PLL, pll);
683 	gl9755_wt_off(pdev);
684 }
685 
gl9755_set_ssc_pll_205mhz(struct pci_dev * pdev)686 static void gl9755_set_ssc_pll_205mhz(struct pci_dev *pdev)
687 {
688 	bool enable = gl9755_ssc_enable(pdev);
689 
690 	/* set pll to 205MHz and ssc */
691 	gl9755_set_ssc(pdev, enable, 0xF, 0x5A1D);
692 	gl9755_set_pll(pdev, 0x1, 0x246, 0x0);
693 }
694 
gl9755_set_ssc_pll_100mhz(struct pci_dev * pdev)695 static void gl9755_set_ssc_pll_100mhz(struct pci_dev *pdev)
696 {
697 	bool enable = gl9755_ssc_enable(pdev);
698 
699 	/* set pll to 100MHz and ssc */
700 	gl9755_set_ssc(pdev, enable, 0xE, 0x51EC);
701 	gl9755_set_pll(pdev, 0x1, 0x244, 0x1);
702 }
703 
gl9755_set_ssc_pll_50mhz(struct pci_dev * pdev)704 static void gl9755_set_ssc_pll_50mhz(struct pci_dev *pdev)
705 {
706 	bool enable = gl9755_ssc_enable(pdev);
707 
708 	/* set pll to 50MHz and ssc */
709 	gl9755_set_ssc(pdev, enable, 0xE, 0x51EC);
710 	gl9755_set_pll(pdev, 0x1, 0x244, 0x3);
711 }
712 
sdhci_gl9755_set_clock(struct sdhci_host * host,unsigned int clock)713 static void sdhci_gl9755_set_clock(struct sdhci_host *host, unsigned int clock)
714 {
715 	struct sdhci_pci_slot *slot = sdhci_priv(host);
716 	struct mmc_ios *ios = &host->mmc->ios;
717 	struct pci_dev *pdev;
718 	u16 clk;
719 
720 	pdev = slot->chip->pdev;
721 	host->mmc->actual_clock = 0;
722 
723 	gl9755_disable_ssc_pll(pdev);
724 	sdhci_writew(host, 0, SDHCI_CLOCK_CONTROL);
725 
726 	if (clock == 0)
727 		return;
728 
729 	clk = sdhci_calc_clk(host, clock, &host->mmc->actual_clock);
730 	if (clock == 200000000 && ios->timing == MMC_TIMING_UHS_SDR104) {
731 		host->mmc->actual_clock = 205000000;
732 		gl9755_set_ssc_pll_205mhz(pdev);
733 	} else if (clock == 100000000) {
734 		gl9755_set_ssc_pll_100mhz(pdev);
735 	} else if (clock == 50000000) {
736 		gl9755_set_ssc_pll_50mhz(pdev);
737 	}
738 
739 	sdhci_enable_clk(host, clk);
740 }
741 
gl9755_hw_setting(struct sdhci_pci_slot * slot)742 static void gl9755_hw_setting(struct sdhci_pci_slot *slot)
743 {
744 	struct pci_dev *pdev = slot->chip->pdev;
745 	u32 value;
746 
747 	gl9755_wt_on(pdev);
748 
749 	pci_read_config_dword(pdev, PCI_GLI_9755_PECONF, &value);
750 	/*
751 	 * Apple ARM64 platforms using these chips may have
752 	 * inverted CD/WP detection.
753 	 */
754 	if (of_property_read_bool(pdev->dev.of_node, "cd-inverted"))
755 		value |= PCI_GLI_9755_INVERT_CD;
756 	if (of_property_read_bool(pdev->dev.of_node, "wp-inverted"))
757 		value |= PCI_GLI_9755_INVERT_WP;
758 	value &= ~PCI_GLI_9755_LFCLK;
759 	value &= ~PCI_GLI_9755_DMACLK;
760 	pci_write_config_dword(pdev, PCI_GLI_9755_PECONF, value);
761 
762 	/* enable short circuit protection */
763 	pci_read_config_dword(pdev, PCI_GLI_9755_SerDes, &value);
764 	value &= ~PCI_GLI_9755_SCP_DIS;
765 	pci_write_config_dword(pdev, PCI_GLI_9755_SerDes, value);
766 
767 	pci_read_config_dword(pdev, PCI_GLI_9755_CFG2, &value);
768 	value &= ~PCI_GLI_9755_CFG2_L1DLY;
769 	/* set ASPM L1 entry delay to 7.9us */
770 	value |= FIELD_PREP(PCI_GLI_9755_CFG2_L1DLY,
771 			    GLI_9755_CFG2_L1DLY_VALUE);
772 	pci_write_config_dword(pdev, PCI_GLI_9755_CFG2, value);
773 
774 	/* toggle PM state to allow GL9755 to enter ASPM L1.2 */
775 	pci_set_power_state(pdev, PCI_D3hot);
776 	pci_set_power_state(pdev, PCI_D0);
777 
778 	/* mask the replay timer timeout of AER */
779 	sdhci_gli_mask_replay_timer_timeout(pdev);
780 
781 	gl9755_wt_off(pdev);
782 }
783 
gl9767_vhs_read(struct pci_dev * pdev)784 static inline void gl9767_vhs_read(struct pci_dev *pdev)
785 {
786 	u32 vhs_enable;
787 	u32 vhs_value;
788 
789 	pci_read_config_dword(pdev, PCIE_GLI_9767_VHS, &vhs_value);
790 	vhs_enable = FIELD_GET(GLI_9767_VHS_REV, vhs_value);
791 
792 	if (vhs_enable == GLI_9767_VHS_REV_R)
793 		return;
794 
795 	vhs_value &= ~GLI_9767_VHS_REV;
796 	vhs_value |= FIELD_PREP(GLI_9767_VHS_REV, GLI_9767_VHS_REV_R);
797 
798 	pci_write_config_dword(pdev, PCIE_GLI_9767_VHS, vhs_value);
799 }
800 
gl9767_vhs_write(struct pci_dev * pdev)801 static inline void gl9767_vhs_write(struct pci_dev *pdev)
802 {
803 	u32 vhs_enable;
804 	u32 vhs_value;
805 
806 	pci_read_config_dword(pdev, PCIE_GLI_9767_VHS, &vhs_value);
807 	vhs_enable = FIELD_GET(GLI_9767_VHS_REV, vhs_value);
808 
809 	if (vhs_enable == GLI_9767_VHS_REV_W)
810 		return;
811 
812 	vhs_value &= ~GLI_9767_VHS_REV;
813 	vhs_value |= FIELD_PREP(GLI_9767_VHS_REV, GLI_9767_VHS_REV_W);
814 
815 	pci_write_config_dword(pdev, PCIE_GLI_9767_VHS, vhs_value);
816 }
817 
gl9767_ssc_enable(struct pci_dev * pdev)818 static bool gl9767_ssc_enable(struct pci_dev *pdev)
819 {
820 	u32 value;
821 	u8 enable;
822 
823 	gl9767_vhs_write(pdev);
824 
825 	pci_read_config_dword(pdev, PCIE_GLI_9767_COM_MAILBOX, &value);
826 	enable = FIELD_GET(PCIE_GLI_9767_COM_MAILBOX_SSC_EN, value);
827 
828 	gl9767_vhs_read(pdev);
829 
830 	return enable;
831 }
832 
gl9767_set_ssc(struct pci_dev * pdev,u8 enable,u8 step,u16 ppm)833 static void gl9767_set_ssc(struct pci_dev *pdev, u8 enable, u8 step, u16 ppm)
834 {
835 	u32 pll;
836 	u32 ssc;
837 
838 	gl9767_vhs_write(pdev);
839 
840 	pci_read_config_dword(pdev, PCIE_GLI_9767_SD_PLL_CTL, &pll);
841 	pci_read_config_dword(pdev, PCIE_GLI_9767_SD_PLL_CTL2, &ssc);
842 	pll &= ~(PCIE_GLI_9767_SD_PLL_CTL_SSC_STEP_SETTING |
843 		 PCIE_GLI_9767_SD_PLL_CTL_SSC_EN);
844 	ssc &= ~PCIE_GLI_9767_SD_PLL_CTL2_PLLSSC_PPM;
845 	pll |= FIELD_PREP(PCIE_GLI_9767_SD_PLL_CTL_SSC_STEP_SETTING, step) |
846 	       FIELD_PREP(PCIE_GLI_9767_SD_PLL_CTL_SSC_EN, enable);
847 	ssc |= FIELD_PREP(PCIE_GLI_9767_SD_PLL_CTL2_PLLSSC_PPM, ppm);
848 	pci_write_config_dword(pdev, PCIE_GLI_9767_SD_PLL_CTL2, ssc);
849 	pci_write_config_dword(pdev, PCIE_GLI_9767_SD_PLL_CTL, pll);
850 
851 	gl9767_vhs_read(pdev);
852 }
853 
gl9767_set_pll(struct pci_dev * pdev,u8 dir,u16 ldiv,u8 pdiv)854 static void gl9767_set_pll(struct pci_dev *pdev, u8 dir, u16 ldiv, u8 pdiv)
855 {
856 	u32 pll;
857 
858 	gl9767_vhs_write(pdev);
859 
860 	pci_read_config_dword(pdev, PCIE_GLI_9767_SD_PLL_CTL, &pll);
861 	pll &= ~(PCIE_GLI_9767_SD_PLL_CTL_PLL_LDIV |
862 		 PCIE_GLI_9767_SD_PLL_CTL_PLL_PDIV |
863 		 PCIE_GLI_9767_SD_PLL_CTL_PLL_DIR_EN);
864 	pll |= FIELD_PREP(PCIE_GLI_9767_SD_PLL_CTL_PLL_LDIV, ldiv) |
865 	       FIELD_PREP(PCIE_GLI_9767_SD_PLL_CTL_PLL_PDIV, pdiv) |
866 	       FIELD_PREP(PCIE_GLI_9767_SD_PLL_CTL_PLL_DIR_EN, dir);
867 	pci_write_config_dword(pdev, PCIE_GLI_9767_SD_PLL_CTL, pll);
868 
869 	gl9767_vhs_read(pdev);
870 
871 	/* wait for pll stable */
872 	usleep_range(1000, 1100);
873 }
874 
gl9767_set_ssc_pll_205mhz(struct pci_dev * pdev)875 static void gl9767_set_ssc_pll_205mhz(struct pci_dev *pdev)
876 {
877 	bool enable = gl9767_ssc_enable(pdev);
878 
879 	/* set pll to 205MHz and ssc */
880 	gl9767_set_ssc(pdev, enable, 0x1F, 0xF5C3);
881 	gl9767_set_pll(pdev, 0x1, 0x246, 0x0);
882 }
883 
gl9767_disable_ssc_pll(struct pci_dev * pdev)884 static void gl9767_disable_ssc_pll(struct pci_dev *pdev)
885 {
886 	u32 pll;
887 
888 	gl9767_vhs_write(pdev);
889 
890 	pci_read_config_dword(pdev, PCIE_GLI_9767_SD_PLL_CTL, &pll);
891 	pll &= ~(PCIE_GLI_9767_SD_PLL_CTL_PLL_DIR_EN | PCIE_GLI_9767_SD_PLL_CTL_SSC_EN);
892 	pci_write_config_dword(pdev, PCIE_GLI_9767_SD_PLL_CTL, pll);
893 
894 	gl9767_vhs_read(pdev);
895 }
896 
gl9767_set_low_power_negotiation(struct pci_dev * pdev,bool enable)897 static void gl9767_set_low_power_negotiation(struct pci_dev *pdev, bool enable)
898 {
899 	u32 value;
900 
901 	gl9767_vhs_write(pdev);
902 
903 	pci_read_config_dword(pdev, PCIE_GLI_9767_CFG, &value);
904 	if (enable)
905 		value &= ~PCIE_GLI_9767_CFG_LOW_PWR_OFF;
906 	else
907 		value |= PCIE_GLI_9767_CFG_LOW_PWR_OFF;
908 	pci_write_config_dword(pdev, PCIE_GLI_9767_CFG, value);
909 
910 	gl9767_vhs_read(pdev);
911 }
912 
sdhci_gl9767_set_clock(struct sdhci_host * host,unsigned int clock)913 static void sdhci_gl9767_set_clock(struct sdhci_host *host, unsigned int clock)
914 {
915 	struct sdhci_pci_slot *slot = sdhci_priv(host);
916 	struct mmc_ios *ios = &host->mmc->ios;
917 	struct pci_dev *pdev;
918 	u16 clk;
919 
920 	pdev = slot->chip->pdev;
921 	host->mmc->actual_clock = 0;
922 
923 	gl9767_set_low_power_negotiation(pdev, false);
924 	gl9767_disable_ssc_pll(pdev);
925 	sdhci_writew(host, 0, SDHCI_CLOCK_CONTROL);
926 
927 	if (clock == 0) {
928 		gl9767_set_low_power_negotiation(pdev, true);
929 		return;
930 	}
931 
932 	clk = sdhci_calc_clk(host, clock, &host->mmc->actual_clock);
933 	if (clock == 200000000 && ios->timing == MMC_TIMING_UHS_SDR104) {
934 		host->mmc->actual_clock = 205000000;
935 		gl9767_set_ssc_pll_205mhz(pdev);
936 	}
937 
938 	sdhci_enable_clk(host, clk);
939 	gl9767_set_low_power_negotiation(pdev, true);
940 }
941 
gli_set_9767(struct sdhci_host * host)942 static void gli_set_9767(struct sdhci_host *host)
943 {
944 	u32 value;
945 
946 	value = sdhci_readl(host, SDHCI_GLI_9767_GM_BURST_SIZE);
947 	value &= ~SDHCI_GLI_9767_GM_BURST_SIZE_AXI_ALWAYS_SET;
948 	sdhci_writel(host, value, SDHCI_GLI_9767_GM_BURST_SIZE);
949 }
950 
gl9767_hw_setting(struct sdhci_pci_slot * slot)951 static void gl9767_hw_setting(struct sdhci_pci_slot *slot)
952 {
953 	struct pci_dev *pdev = slot->chip->pdev;
954 	u32 value;
955 
956 	gl9767_vhs_write(pdev);
957 
958 	pci_read_config_dword(pdev, PCIE_GLI_9767_PWR_MACRO_CTL, &value);
959 	value &= ~(PCIE_GLI_9767_PWR_MACRO_CTL_LOW_VOLTAGE |
960 		   PCIE_GLI_9767_PWR_MACRO_CTL_LD0_LOW_OUTPUT_VOLTAGE |
961 		   PCIE_GLI_9767_PWR_MACRO_CTL_RCLK_AMPLITUDE_CTL);
962 
963 	value |= PCIE_GLI_9767_PWR_MACRO_CTL_LOW_VOLTAGE |
964 		 FIELD_PREP(PCIE_GLI_9767_PWR_MACRO_CTL_LD0_LOW_OUTPUT_VOLTAGE,
965 			    PCIE_GLI_9767_PWR_MACRO_CTL_LD0_LOW_OUTPUT_VOLTAGE_VALUE) |
966 		 FIELD_PREP(PCIE_GLI_9767_PWR_MACRO_CTL_RCLK_AMPLITUDE_CTL,
967 			    PCIE_GLI_9767_PWR_MACRO_CTL_RCLK_AMPLITUDE_CTL_VALUE);
968 	pci_write_config_dword(pdev, PCIE_GLI_9767_PWR_MACRO_CTL, value);
969 
970 	pci_read_config_dword(pdev, PCIE_GLI_9767_SCR, &value);
971 	value &= ~(PCIE_GLI_9767_SCR_SYSTEM_CLK_SELECT_MODE0 |
972 		   PCIE_GLI_9767_SCR_SYSTEM_CLK_SELECT_MODE1 |
973 		   PCIE_GLI_9767_SCR_CFG_RST_DATA_LINK_DOWN);
974 
975 	value |= PCIE_GLI_9767_SCR_AUTO_AXI_W_BURST |
976 		 PCIE_GLI_9767_SCR_AUTO_AXI_R_BURST |
977 		 PCIE_GLI_9767_SCR_AXI_REQ |
978 		 PCIE_GLI_9767_SCR_CARD_DET_PWR_SAVING_EN |
979 		 PCIE_GLI_9767_SCR_CORE_PWR_D3_OFF;
980 	pci_write_config_dword(pdev, PCIE_GLI_9767_SCR, value);
981 
982 	gl9767_vhs_read(pdev);
983 }
984 
sdhci_gl9767_reset(struct sdhci_host * host,u8 mask)985 static void sdhci_gl9767_reset(struct sdhci_host *host, u8 mask)
986 {
987 	sdhci_reset(host, mask);
988 	gli_set_9767(host);
989 }
990 
gl9767_init_sd_express(struct mmc_host * mmc,struct mmc_ios * ios)991 static int gl9767_init_sd_express(struct mmc_host *mmc, struct mmc_ios *ios)
992 {
993 	struct sdhci_host *host = mmc_priv(mmc);
994 	struct sdhci_pci_slot *slot = sdhci_priv(host);
995 	struct pci_dev *pdev;
996 	u32 value;
997 	int i;
998 
999 	pdev = slot->chip->pdev;
1000 
1001 	if (mmc->ops->get_ro(mmc)) {
1002 		mmc->ios.timing &= ~(MMC_TIMING_SD_EXP | MMC_TIMING_SD_EXP_1_2V);
1003 		return 0;
1004 	}
1005 
1006 	gl9767_vhs_write(pdev);
1007 
1008 	pci_read_config_dword(pdev, PCIE_GLI_9767_COMBO_MUX_CTL, &value);
1009 	value &= ~(PCIE_GLI_9767_COMBO_MUX_CTL_RST_EN | PCIE_GLI_9767_COMBO_MUX_CTL_WAIT_PERST_EN);
1010 	pci_write_config_dword(pdev, PCIE_GLI_9767_COMBO_MUX_CTL, value);
1011 
1012 	pci_read_config_dword(pdev, PCIE_GLI_9767_SD_DATA_MULTI_CTL, &value);
1013 	value &= ~PCIE_GLI_9767_SD_DATA_MULTI_CTL_DISCONNECT_TIME;
1014 	value |= FIELD_PREP(PCIE_GLI_9767_SD_DATA_MULTI_CTL_DISCONNECT_TIME,
1015 			    PCIE_GLI_9767_SD_DATA_MULTI_CTL_DISCONNECT_TIME_VALUE);
1016 	pci_write_config_dword(pdev, PCIE_GLI_9767_SD_DATA_MULTI_CTL, value);
1017 
1018 	pci_read_config_dword(pdev, PCIE_GLI_9767_NORMAL_ERR_INT_STATUS_REG2, &value);
1019 	value |= PCIE_GLI_9767_NORMAL_ERR_INT_STATUS_REG2_SDEI_COMPLETE;
1020 	pci_write_config_dword(pdev, PCIE_GLI_9767_NORMAL_ERR_INT_STATUS_REG2, value);
1021 
1022 	pci_read_config_dword(pdev, PCIE_GLI_9767_NORMAL_ERR_INT_STATUS_EN_REG2, &value);
1023 	value |= PCIE_GLI_9767_NORMAL_ERR_INT_STATUS_EN_REG2_SDEI_COMPLETE_STATUS_EN;
1024 	pci_write_config_dword(pdev, PCIE_GLI_9767_NORMAL_ERR_INT_STATUS_EN_REG2, value);
1025 
1026 	pci_read_config_dword(pdev, PCIE_GLI_9767_NORMAL_ERR_INT_SIGNAL_EN_REG2, &value);
1027 	value |= PCIE_GLI_9767_NORMAL_ERR_INT_SIGNAL_EN_REG2_SDEI_COMPLETE_SIGNAL_EN;
1028 	pci_write_config_dword(pdev, PCIE_GLI_9767_NORMAL_ERR_INT_SIGNAL_EN_REG2, value);
1029 
1030 	pci_read_config_dword(pdev, PCIE_GLI_9767_CFG, &value);
1031 	value |= PCIE_GLI_9767_CFG_LOW_PWR_OFF;
1032 	pci_write_config_dword(pdev, PCIE_GLI_9767_CFG, value);
1033 
1034 	value = sdhci_readw(host, SDHCI_CLOCK_CONTROL);
1035 	value &= ~(SDHCI_CLOCK_CARD_EN | SDHCI_CLOCK_PLL_EN);
1036 	sdhci_writew(host, value, SDHCI_CLOCK_CONTROL);
1037 
1038 	value = sdhci_readb(host, SDHCI_POWER_CONTROL);
1039 	value |= (SDHCI_VDD2_POWER_180 | SDHCI_VDD2_POWER_ON);
1040 	sdhci_writeb(host, value, SDHCI_POWER_CONTROL);
1041 
1042 	pci_read_config_dword(pdev, PCIE_GLI_9767_SD_EXPRESS_CTL, &value);
1043 	value |= PCIE_GLI_9767_SD_EXPRESS_CTL_SDEI_EXE;
1044 	pci_write_config_dword(pdev, PCIE_GLI_9767_SD_EXPRESS_CTL, value);
1045 
1046 	for (i = 0; i < 2; i++) {
1047 		usleep_range(10000, 10100);
1048 		pci_read_config_dword(pdev, PCIE_GLI_9767_NORMAL_ERR_INT_STATUS_REG2, &value);
1049 		if (value & PCIE_GLI_9767_NORMAL_ERR_INT_STATUS_REG2_SDEI_COMPLETE) {
1050 			pci_write_config_dword(pdev, PCIE_GLI_9767_NORMAL_ERR_INT_STATUS_REG2,
1051 					       value);
1052 			break;
1053 		}
1054 	}
1055 
1056 	pci_read_config_dword(pdev, PCIE_GLI_9767_SDHC_CAP, &value);
1057 	if (value & PCIE_GLI_9767_SDHC_CAP_SDEI_RESULT) {
1058 		pci_read_config_dword(pdev, PCIE_GLI_9767_SD_EXPRESS_CTL, &value);
1059 		value |= PCIE_GLI_9767_SD_EXPRESS_CTL_SD_EXPRESS_MODE;
1060 		pci_write_config_dword(pdev, PCIE_GLI_9767_SD_EXPRESS_CTL, value);
1061 	} else {
1062 		mmc->ios.timing &= ~(MMC_TIMING_SD_EXP | MMC_TIMING_SD_EXP_1_2V);
1063 
1064 		value = sdhci_readb(host, SDHCI_POWER_CONTROL);
1065 		value &= ~(SDHCI_VDD2_POWER_180 | SDHCI_VDD2_POWER_ON);
1066 		sdhci_writeb(host, value, SDHCI_POWER_CONTROL);
1067 
1068 		value = sdhci_readw(host, SDHCI_CLOCK_CONTROL);
1069 		value |= (SDHCI_CLOCK_CARD_EN | SDHCI_CLOCK_PLL_EN);
1070 		sdhci_writew(host, value, SDHCI_CLOCK_CONTROL);
1071 	}
1072 
1073 	pci_read_config_dword(pdev, PCIE_GLI_9767_CFG, &value);
1074 	value &= ~PCIE_GLI_9767_CFG_LOW_PWR_OFF;
1075 	pci_write_config_dword(pdev, PCIE_GLI_9767_CFG, value);
1076 	gl9767_vhs_read(pdev);
1077 
1078 	return 0;
1079 }
1080 
gli_probe_slot_gl9750(struct sdhci_pci_slot * slot)1081 static int gli_probe_slot_gl9750(struct sdhci_pci_slot *slot)
1082 {
1083 	struct sdhci_host *host = slot->host;
1084 
1085 	gl9750_hw_setting(host);
1086 	gli_pcie_enable_msi(slot);
1087 	slot->host->mmc->caps2 |= MMC_CAP2_NO_SDIO;
1088 	sdhci_enable_v4_mode(host);
1089 
1090 	return 0;
1091 }
1092 
gli_probe_slot_gl9755(struct sdhci_pci_slot * slot)1093 static int gli_probe_slot_gl9755(struct sdhci_pci_slot *slot)
1094 {
1095 	struct sdhci_host *host = slot->host;
1096 
1097 	gl9755_hw_setting(slot);
1098 	gli_pcie_enable_msi(slot);
1099 	slot->host->mmc->caps2 |= MMC_CAP2_NO_SDIO;
1100 	sdhci_enable_v4_mode(host);
1101 
1102 	return 0;
1103 }
1104 
gli_probe_slot_gl9767(struct sdhci_pci_slot * slot)1105 static int gli_probe_slot_gl9767(struct sdhci_pci_slot *slot)
1106 {
1107 	struct sdhci_host *host = slot->host;
1108 
1109 	gli_set_9767(host);
1110 	gl9767_hw_setting(slot);
1111 	gli_pcie_enable_msi(slot);
1112 	slot->host->mmc->caps2 |= MMC_CAP2_NO_SDIO;
1113 	host->mmc->caps2 |= MMC_CAP2_SD_EXP;
1114 	host->mmc_host_ops.init_sd_express = gl9767_init_sd_express;
1115 	sdhci_enable_v4_mode(host);
1116 
1117 	return 0;
1118 }
1119 
sdhci_gli_voltage_switch(struct sdhci_host * host)1120 static void sdhci_gli_voltage_switch(struct sdhci_host *host)
1121 {
1122 	/*
1123 	 * According to Section 3.6.1 signal voltage switch procedure in
1124 	 * SD Host Controller Simplified Spec. 4.20, steps 6~8 are as
1125 	 * follows:
1126 	 * (6) Set 1.8V Signal Enable in the Host Control 2 register.
1127 	 * (7) Wait 5ms. 1.8V voltage regulator shall be stable within this
1128 	 *     period.
1129 	 * (8) If 1.8V Signal Enable is cleared by Host Controller, go to
1130 	 *     step (12).
1131 	 *
1132 	 * Wait 5ms after set 1.8V signal enable in Host Control 2 register
1133 	 * to ensure 1.8V signal enable bit is set by GL9750/GL9755.
1134 	 *
1135 	 * ...however, the controller in the NUC10i3FNK4 (a 9755) requires
1136 	 * slightly longer than 5ms before the control register reports that
1137 	 * 1.8V is ready, and far longer still before the card will actually
1138 	 * work reliably.
1139 	 */
1140 	usleep_range(100000, 110000);
1141 }
1142 
sdhci_gl9767_voltage_switch(struct sdhci_host * host)1143 static void sdhci_gl9767_voltage_switch(struct sdhci_host *host)
1144 {
1145 	/*
1146 	 * According to Section 3.6.1 signal voltage switch procedure in
1147 	 * SD Host Controller Simplified Spec. 4.20, steps 6~8 are as
1148 	 * follows:
1149 	 * (6) Set 1.8V Signal Enable in the Host Control 2 register.
1150 	 * (7) Wait 5ms. 1.8V voltage regulator shall be stable within this
1151 	 *     period.
1152 	 * (8) If 1.8V Signal Enable is cleared by Host Controller, go to
1153 	 *     step (12).
1154 	 *
1155 	 * Wait 5ms after set 1.8V signal enable in Host Control 2 register
1156 	 * to ensure 1.8V signal enable bit is set by GL9767.
1157 	 *
1158 	 */
1159 	usleep_range(5000, 5500);
1160 }
1161 
sdhci_gl9750_reset(struct sdhci_host * host,u8 mask)1162 static void sdhci_gl9750_reset(struct sdhci_host *host, u8 mask)
1163 {
1164 	sdhci_reset(host, mask);
1165 	gli_set_9750(host);
1166 }
1167 
sdhci_gl9750_readl(struct sdhci_host * host,int reg)1168 static u32 sdhci_gl9750_readl(struct sdhci_host *host, int reg)
1169 {
1170 	u32 value;
1171 
1172 	value = readl(host->ioaddr + reg);
1173 	if (unlikely(reg == SDHCI_MAX_CURRENT && !(value & 0xff)))
1174 		value |= 0xc8;
1175 
1176 	return value;
1177 }
1178 
gl9763e_hs400_enhanced_strobe(struct mmc_host * mmc,struct mmc_ios * ios)1179 static void gl9763e_hs400_enhanced_strobe(struct mmc_host *mmc,
1180 					  struct mmc_ios *ios)
1181 {
1182 	struct sdhci_host *host = mmc_priv(mmc);
1183 	u32 val;
1184 
1185 	val = sdhci_readl(host, SDHCI_GLI_9763E_HS400_ES_REG);
1186 	if (ios->enhanced_strobe)
1187 		val |= SDHCI_GLI_9763E_HS400_ES_BIT;
1188 	else
1189 		val &= ~SDHCI_GLI_9763E_HS400_ES_BIT;
1190 
1191 	sdhci_writel(host, val, SDHCI_GLI_9763E_HS400_ES_REG);
1192 }
1193 
gl9763e_set_low_power_negotiation(struct sdhci_pci_slot * slot,bool enable)1194 static void gl9763e_set_low_power_negotiation(struct sdhci_pci_slot *slot,
1195 					      bool enable)
1196 {
1197 	struct pci_dev *pdev = slot->chip->pdev;
1198 	u32 value;
1199 
1200 	pci_read_config_dword(pdev, PCIE_GLI_9763E_VHS, &value);
1201 	value &= ~GLI_9763E_VHS_REV;
1202 	value |= FIELD_PREP(GLI_9763E_VHS_REV, GLI_9763E_VHS_REV_W);
1203 	pci_write_config_dword(pdev, PCIE_GLI_9763E_VHS, value);
1204 
1205 	pci_read_config_dword(pdev, PCIE_GLI_9763E_CFG, &value);
1206 
1207 	if (enable)
1208 		value &= ~GLI_9763E_CFG_LPSN_DIS;
1209 	else
1210 		value |= GLI_9763E_CFG_LPSN_DIS;
1211 
1212 	pci_write_config_dword(pdev, PCIE_GLI_9763E_CFG, value);
1213 
1214 	pci_read_config_dword(pdev, PCIE_GLI_9763E_VHS, &value);
1215 	value &= ~GLI_9763E_VHS_REV;
1216 	value |= FIELD_PREP(GLI_9763E_VHS_REV, GLI_9763E_VHS_REV_R);
1217 	pci_write_config_dword(pdev, PCIE_GLI_9763E_VHS, value);
1218 }
1219 
sdhci_set_gl9763e_signaling(struct sdhci_host * host,unsigned int timing)1220 static void sdhci_set_gl9763e_signaling(struct sdhci_host *host,
1221 					unsigned int timing)
1222 {
1223 	u16 ctrl_2;
1224 
1225 	ctrl_2 = sdhci_readw(host, SDHCI_HOST_CONTROL2);
1226 	ctrl_2 &= ~SDHCI_CTRL_UHS_MASK;
1227 	if (timing == MMC_TIMING_MMC_HS200)
1228 		ctrl_2 |= SDHCI_CTRL_UHS_SDR104;
1229 	else if (timing == MMC_TIMING_MMC_HS)
1230 		ctrl_2 |= SDHCI_CTRL_UHS_SDR25;
1231 	else if (timing == MMC_TIMING_MMC_DDR52)
1232 		ctrl_2 |= SDHCI_CTRL_UHS_DDR50;
1233 	else if (timing == MMC_TIMING_MMC_HS400)
1234 		ctrl_2 |= SDHCI_GLI_9763E_CTRL_HS400;
1235 
1236 	sdhci_writew(host, ctrl_2, SDHCI_HOST_CONTROL2);
1237 }
1238 
sdhci_gl9763e_dumpregs(struct mmc_host * mmc)1239 static void sdhci_gl9763e_dumpregs(struct mmc_host *mmc)
1240 {
1241 	sdhci_dumpregs(mmc_priv(mmc));
1242 }
1243 
sdhci_gl9763e_cqe_pre_enable(struct mmc_host * mmc)1244 static void sdhci_gl9763e_cqe_pre_enable(struct mmc_host *mmc)
1245 {
1246 	struct cqhci_host *cq_host = mmc->cqe_private;
1247 	u32 value;
1248 
1249 	value = cqhci_readl(cq_host, CQHCI_CFG);
1250 	value |= CQHCI_ENABLE;
1251 	cqhci_writel(cq_host, value, CQHCI_CFG);
1252 }
1253 
sdhci_gl9763e_cqe_enable(struct mmc_host * mmc)1254 static void sdhci_gl9763e_cqe_enable(struct mmc_host *mmc)
1255 {
1256 	struct sdhci_host *host = mmc_priv(mmc);
1257 
1258 	sdhci_writew(host, GLI_9763E_CQE_TRNS_MODE, SDHCI_TRANSFER_MODE);
1259 	sdhci_cqe_enable(mmc);
1260 }
1261 
sdhci_gl9763e_cqhci_irq(struct sdhci_host * host,u32 intmask)1262 static u32 sdhci_gl9763e_cqhci_irq(struct sdhci_host *host, u32 intmask)
1263 {
1264 	int cmd_error = 0;
1265 	int data_error = 0;
1266 
1267 	if (!sdhci_cqe_irq(host, intmask, &cmd_error, &data_error))
1268 		return intmask;
1269 
1270 	cqhci_irq(host->mmc, intmask, cmd_error, data_error);
1271 
1272 	return 0;
1273 }
1274 
sdhci_gl9763e_cqe_post_disable(struct mmc_host * mmc)1275 static void sdhci_gl9763e_cqe_post_disable(struct mmc_host *mmc)
1276 {
1277 	struct sdhci_host *host = mmc_priv(mmc);
1278 	struct cqhci_host *cq_host = mmc->cqe_private;
1279 	u32 value;
1280 
1281 	value = cqhci_readl(cq_host, CQHCI_CFG);
1282 	value &= ~CQHCI_ENABLE;
1283 	cqhci_writel(cq_host, value, CQHCI_CFG);
1284 	sdhci_writew(host, 0x0, SDHCI_TRANSFER_MODE);
1285 }
1286 
1287 static const struct cqhci_host_ops sdhci_gl9763e_cqhci_ops = {
1288 	.enable         = sdhci_gl9763e_cqe_enable,
1289 	.disable        = sdhci_cqe_disable,
1290 	.dumpregs       = sdhci_gl9763e_dumpregs,
1291 	.pre_enable     = sdhci_gl9763e_cqe_pre_enable,
1292 	.post_disable   = sdhci_gl9763e_cqe_post_disable,
1293 };
1294 
gl9763e_add_host(struct sdhci_pci_slot * slot)1295 static int gl9763e_add_host(struct sdhci_pci_slot *slot)
1296 {
1297 	struct device *dev = &slot->chip->pdev->dev;
1298 	struct sdhci_host *host = slot->host;
1299 	struct cqhci_host *cq_host;
1300 	bool dma64;
1301 	int ret;
1302 
1303 	ret = sdhci_setup_host(host);
1304 	if (ret)
1305 		return ret;
1306 
1307 	cq_host = devm_kzalloc(dev, sizeof(*cq_host), GFP_KERNEL);
1308 	if (!cq_host) {
1309 		ret = -ENOMEM;
1310 		goto cleanup;
1311 	}
1312 
1313 	cq_host->mmio = host->ioaddr + SDHCI_GLI_9763E_CQE_BASE_ADDR;
1314 	cq_host->ops = &sdhci_gl9763e_cqhci_ops;
1315 
1316 	dma64 = host->flags & SDHCI_USE_64_BIT_DMA;
1317 	if (dma64)
1318 		cq_host->caps |= CQHCI_TASK_DESC_SZ_128;
1319 
1320 	ret = cqhci_init(cq_host, host->mmc, dma64);
1321 	if (ret)
1322 		goto cleanup;
1323 
1324 	ret = __sdhci_add_host(host);
1325 	if (ret)
1326 		goto cleanup;
1327 
1328 	/* Disable LPM negotiation to avoid entering L1 state. */
1329 	gl9763e_set_low_power_negotiation(slot, false);
1330 
1331 	return 0;
1332 
1333 cleanup:
1334 	sdhci_cleanup_host(host);
1335 	return ret;
1336 }
1337 
gl9763e_hw_setting(struct sdhci_pci_slot * slot)1338 static void gl9763e_hw_setting(struct sdhci_pci_slot *slot)
1339 {
1340 	struct pci_dev *pdev = slot->chip->pdev;
1341 	u32 value;
1342 
1343 	pci_read_config_dword(pdev, PCIE_GLI_9763E_VHS, &value);
1344 	value &= ~GLI_9763E_VHS_REV;
1345 	value |= FIELD_PREP(GLI_9763E_VHS_REV, GLI_9763E_VHS_REV_W);
1346 	pci_write_config_dword(pdev, PCIE_GLI_9763E_VHS, value);
1347 
1348 	pci_read_config_dword(pdev, PCIE_GLI_9763E_SCR, &value);
1349 	value |= GLI_9763E_SCR_AXI_REQ;
1350 	pci_write_config_dword(pdev, PCIE_GLI_9763E_SCR, value);
1351 
1352 	pci_read_config_dword(pdev, PCIE_GLI_9763E_MMC_CTRL, &value);
1353 	value &= ~GLI_9763E_HS400_SLOW;
1354 	pci_write_config_dword(pdev, PCIE_GLI_9763E_MMC_CTRL, value);
1355 
1356 	pci_read_config_dword(pdev, PCIE_GLI_9763E_CFG2, &value);
1357 	value &= ~GLI_9763E_CFG2_L1DLY;
1358 	/* set ASPM L1 entry delay to 21us */
1359 	value |= FIELD_PREP(GLI_9763E_CFG2_L1DLY, GLI_9763E_CFG2_L1DLY_MID);
1360 	pci_write_config_dword(pdev, PCIE_GLI_9763E_CFG2, value);
1361 
1362 	pci_read_config_dword(pdev, PCIE_GLI_9763E_CLKRXDLY, &value);
1363 	value &= ~GLI_9763E_HS400_RXDLY;
1364 	value |= FIELD_PREP(GLI_9763E_HS400_RXDLY, GLI_9763E_HS400_RXDLY_5);
1365 	pci_write_config_dword(pdev, PCIE_GLI_9763E_CLKRXDLY, value);
1366 
1367 	/* mask the replay timer timeout of AER */
1368 	sdhci_gli_mask_replay_timer_timeout(pdev);
1369 
1370 	pci_read_config_dword(pdev, PCIE_GLI_9763E_VHS, &value);
1371 	value &= ~GLI_9763E_VHS_REV;
1372 	value |= FIELD_PREP(GLI_9763E_VHS_REV, GLI_9763E_VHS_REV_R);
1373 	pci_write_config_dword(pdev, PCIE_GLI_9763E_VHS, value);
1374 }
1375 
1376 #ifdef CONFIG_PM
gl9763e_runtime_suspend(struct sdhci_pci_chip * chip)1377 static int gl9763e_runtime_suspend(struct sdhci_pci_chip *chip)
1378 {
1379 	struct sdhci_pci_slot *slot = chip->slots[0];
1380 	struct sdhci_host *host = slot->host;
1381 	u16 clock;
1382 
1383 	/* Enable LPM negotiation to allow entering L1 state */
1384 	gl9763e_set_low_power_negotiation(slot, true);
1385 
1386 	clock = sdhci_readw(host, SDHCI_CLOCK_CONTROL);
1387 	clock &= ~(SDHCI_CLOCK_PLL_EN | SDHCI_CLOCK_CARD_EN);
1388 	sdhci_writew(host, clock, SDHCI_CLOCK_CONTROL);
1389 
1390 	return 0;
1391 }
1392 
gl9763e_runtime_resume(struct sdhci_pci_chip * chip)1393 static int gl9763e_runtime_resume(struct sdhci_pci_chip *chip)
1394 {
1395 	struct sdhci_pci_slot *slot = chip->slots[0];
1396 	struct sdhci_host *host = slot->host;
1397 	u16 clock;
1398 
1399 	if (host->mmc->ios.power_mode != MMC_POWER_ON)
1400 		return 0;
1401 
1402 	clock = sdhci_readw(host, SDHCI_CLOCK_CONTROL);
1403 
1404 	clock |= SDHCI_CLOCK_PLL_EN;
1405 	clock &= ~SDHCI_CLOCK_INT_STABLE;
1406 	sdhci_writew(host, clock, SDHCI_CLOCK_CONTROL);
1407 
1408 	/* Wait max 150 ms */
1409 	if (read_poll_timeout(sdhci_readw, clock, (clock & SDHCI_CLOCK_INT_STABLE),
1410 			      1000, 150000, false, host, SDHCI_CLOCK_CONTROL)) {
1411 		pr_err("%s: PLL clock never stabilised.\n",
1412 		       mmc_hostname(host->mmc));
1413 		sdhci_dumpregs(host);
1414 	}
1415 
1416 	clock |= SDHCI_CLOCK_CARD_EN;
1417 	sdhci_writew(host, clock, SDHCI_CLOCK_CONTROL);
1418 
1419 	/* Disable LPM negotiation to avoid entering L1 state. */
1420 	gl9763e_set_low_power_negotiation(slot, false);
1421 
1422 	return 0;
1423 }
1424 #endif
1425 
1426 #ifdef CONFIG_PM_SLEEP
sdhci_pci_gli_resume(struct sdhci_pci_chip * chip)1427 static int sdhci_pci_gli_resume(struct sdhci_pci_chip *chip)
1428 {
1429 	struct sdhci_pci_slot *slot = chip->slots[0];
1430 
1431 	pci_free_irq_vectors(slot->chip->pdev);
1432 	gli_pcie_enable_msi(slot);
1433 
1434 	return sdhci_pci_resume_host(chip);
1435 }
1436 
gl9763e_resume(struct sdhci_pci_chip * chip)1437 static int gl9763e_resume(struct sdhci_pci_chip *chip)
1438 {
1439 	struct sdhci_pci_slot *slot = chip->slots[0];
1440 	int ret;
1441 
1442 	ret = sdhci_pci_gli_resume(chip);
1443 	if (ret)
1444 		return ret;
1445 
1446 	ret = cqhci_resume(slot->host->mmc);
1447 	if (ret)
1448 		return ret;
1449 
1450 	/*
1451 	 * Disable LPM negotiation to bring device back in sync
1452 	 * with its runtime_pm state.
1453 	 */
1454 	gl9763e_set_low_power_negotiation(slot, false);
1455 
1456 	return 0;
1457 }
1458 
gl9763e_suspend(struct sdhci_pci_chip * chip)1459 static int gl9763e_suspend(struct sdhci_pci_chip *chip)
1460 {
1461 	struct sdhci_pci_slot *slot = chip->slots[0];
1462 	int ret;
1463 
1464 	/*
1465 	 * Certain SoCs can suspend only with the bus in low-
1466 	 * power state, notably x86 SoCs when using S0ix.
1467 	 * Re-enable LPM negotiation to allow entering L1 state
1468 	 * and entering system suspend.
1469 	 */
1470 	gl9763e_set_low_power_negotiation(slot, true);
1471 
1472 	ret = cqhci_suspend(slot->host->mmc);
1473 	if (ret)
1474 		goto err_suspend;
1475 
1476 	ret = sdhci_suspend_host(slot->host);
1477 	if (ret)
1478 		goto err_suspend_host;
1479 
1480 	return 0;
1481 
1482 err_suspend_host:
1483 	cqhci_resume(slot->host->mmc);
1484 err_suspend:
1485 	gl9763e_set_low_power_negotiation(slot, false);
1486 	return ret;
1487 }
1488 #endif
1489 
gli_probe_slot_gl9763e(struct sdhci_pci_slot * slot)1490 static int gli_probe_slot_gl9763e(struct sdhci_pci_slot *slot)
1491 {
1492 	struct pci_dev *pdev = slot->chip->pdev;
1493 	struct sdhci_host *host = slot->host;
1494 	u32 value;
1495 
1496 	host->mmc->caps |= MMC_CAP_8_BIT_DATA |
1497 			   MMC_CAP_1_8V_DDR |
1498 			   MMC_CAP_NONREMOVABLE;
1499 	host->mmc->caps2 |= MMC_CAP2_HS200_1_8V_SDR |
1500 			    MMC_CAP2_HS400_1_8V |
1501 			    MMC_CAP2_HS400_ES |
1502 			    MMC_CAP2_NO_SDIO |
1503 			    MMC_CAP2_NO_SD;
1504 
1505 	pci_read_config_dword(pdev, PCIE_GLI_9763E_MB, &value);
1506 	if (!(value & GLI_9763E_MB_CMDQ_OFF))
1507 		if (value & GLI_9763E_MB_ERP_ON)
1508 			host->mmc->caps2 |= MMC_CAP2_CQE | MMC_CAP2_CQE_DCMD;
1509 
1510 	gli_pcie_enable_msi(slot);
1511 	host->mmc_host_ops.hs400_enhanced_strobe =
1512 					gl9763e_hs400_enhanced_strobe;
1513 	gl9763e_hw_setting(slot);
1514 	sdhci_enable_v4_mode(host);
1515 
1516 	return 0;
1517 }
1518 
1519 #define REG_OFFSET_IN_BITS(reg) ((reg) << 3 & 0x18)
1520 
sdhci_gli_readw(struct sdhci_host * host,int reg)1521 static u16 sdhci_gli_readw(struct sdhci_host *host, int reg)
1522 {
1523 	u32 val = readl(host->ioaddr + (reg & ~3));
1524 	u16 word;
1525 
1526 	word = (val >> REG_OFFSET_IN_BITS(reg)) & 0xffff;
1527 	return word;
1528 }
1529 
sdhci_gli_readb(struct sdhci_host * host,int reg)1530 static u8 sdhci_gli_readb(struct sdhci_host *host, int reg)
1531 {
1532 	u32 val = readl(host->ioaddr + (reg & ~3));
1533 	u8 byte = (val >> REG_OFFSET_IN_BITS(reg)) & 0xff;
1534 
1535 	return byte;
1536 }
1537 
1538 static const struct sdhci_ops sdhci_gl9755_ops = {
1539 	.read_w			= sdhci_gli_readw,
1540 	.read_b			= sdhci_gli_readb,
1541 	.set_clock		= sdhci_gl9755_set_clock,
1542 	.enable_dma		= sdhci_pci_enable_dma,
1543 	.set_bus_width		= sdhci_set_bus_width,
1544 	.reset			= sdhci_reset,
1545 	.set_uhs_signaling	= sdhci_set_uhs_signaling,
1546 	.voltage_switch		= sdhci_gli_voltage_switch,
1547 };
1548 
1549 const struct sdhci_pci_fixes sdhci_gl9755 = {
1550 	.quirks		= SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
1551 	.quirks2	= SDHCI_QUIRK2_BROKEN_DDR50,
1552 	.probe_slot	= gli_probe_slot_gl9755,
1553 	.ops            = &sdhci_gl9755_ops,
1554 #ifdef CONFIG_PM_SLEEP
1555 	.resume         = sdhci_pci_gli_resume,
1556 #endif
1557 };
1558 
1559 static const struct sdhci_ops sdhci_gl9750_ops = {
1560 	.read_w			= sdhci_gli_readw,
1561 	.read_b			= sdhci_gli_readb,
1562 	.read_l                 = sdhci_gl9750_readl,
1563 	.set_clock		= sdhci_gl9750_set_clock,
1564 	.enable_dma		= sdhci_pci_enable_dma,
1565 	.set_bus_width		= sdhci_set_bus_width,
1566 	.reset			= sdhci_gl9750_reset,
1567 	.set_uhs_signaling	= sdhci_set_uhs_signaling,
1568 	.voltage_switch		= sdhci_gli_voltage_switch,
1569 	.platform_execute_tuning = gl9750_execute_tuning,
1570 };
1571 
1572 const struct sdhci_pci_fixes sdhci_gl9750 = {
1573 	.quirks		= SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
1574 	.quirks2	= SDHCI_QUIRK2_BROKEN_DDR50,
1575 	.probe_slot	= gli_probe_slot_gl9750,
1576 	.ops            = &sdhci_gl9750_ops,
1577 #ifdef CONFIG_PM_SLEEP
1578 	.resume         = sdhci_pci_gli_resume,
1579 #endif
1580 };
1581 
1582 static const struct sdhci_ops sdhci_gl9763e_ops = {
1583 	.set_clock		= sdhci_set_clock,
1584 	.enable_dma		= sdhci_pci_enable_dma,
1585 	.set_bus_width		= sdhci_set_bus_width,
1586 	.reset			= sdhci_and_cqhci_reset,
1587 	.set_uhs_signaling	= sdhci_set_gl9763e_signaling,
1588 	.voltage_switch		= sdhci_gli_voltage_switch,
1589 	.irq                    = sdhci_gl9763e_cqhci_irq,
1590 };
1591 
1592 const struct sdhci_pci_fixes sdhci_gl9763e = {
1593 	.quirks		= SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
1594 	.probe_slot	= gli_probe_slot_gl9763e,
1595 	.ops            = &sdhci_gl9763e_ops,
1596 #ifdef CONFIG_PM_SLEEP
1597 	.resume		= gl9763e_resume,
1598 	.suspend	= gl9763e_suspend,
1599 #endif
1600 #ifdef CONFIG_PM
1601 	.runtime_suspend = gl9763e_runtime_suspend,
1602 	.runtime_resume  = gl9763e_runtime_resume,
1603 	.allow_runtime_pm = true,
1604 #endif
1605 	.add_host       = gl9763e_add_host,
1606 };
1607 
1608 static const struct sdhci_ops sdhci_gl9767_ops = {
1609 	.set_clock		 = sdhci_gl9767_set_clock,
1610 	.enable_dma		 = sdhci_pci_enable_dma,
1611 	.set_bus_width		 = sdhci_set_bus_width,
1612 	.reset			 = sdhci_gl9767_reset,
1613 	.set_uhs_signaling	 = sdhci_set_uhs_signaling,
1614 	.voltage_switch		 = sdhci_gl9767_voltage_switch,
1615 };
1616 
1617 const struct sdhci_pci_fixes sdhci_gl9767 = {
1618 	.quirks		= SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
1619 	.quirks2	= SDHCI_QUIRK2_BROKEN_DDR50,
1620 	.probe_slot	= gli_probe_slot_gl9767,
1621 	.ops		= &sdhci_gl9767_ops,
1622 #ifdef CONFIG_PM_SLEEP
1623 	.resume		= sdhci_pci_gli_resume,
1624 #endif
1625 };
1626