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746bfe63 YS |
1 | /* |
2 | * Renesas USB3.0 Peripheral driver (USB gadget) | |
3 | * | |
4 | * Copyright (C) 2015 Renesas Electronics Corporation | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; version 2 of the License. | |
9 | */ | |
10 | ||
11 | #include <linux/delay.h> | |
2d4aa21a | 12 | #include <linux/dma-mapping.h> |
746bfe63 | 13 | #include <linux/err.h> |
3b68e7ca | 14 | #include <linux/extcon.h> |
746bfe63 YS |
15 | #include <linux/interrupt.h> |
16 | #include <linux/io.h> | |
17 | #include <linux/module.h> | |
18 | #include <linux/of_device.h> | |
19 | #include <linux/platform_device.h> | |
20 | #include <linux/pm_runtime.h> | |
21 | #include <linux/sizes.h> | |
22 | #include <linux/slab.h> | |
23 | #include <linux/usb/ch9.h> | |
24 | #include <linux/usb/gadget.h> | |
25 | ||
26 | /* register definitions */ | |
27 | #define USB3_AXI_INT_STA 0x008 | |
28 | #define USB3_AXI_INT_ENA 0x00c | |
29 | #define USB3_DMA_INT_STA 0x010 | |
30 | #define USB3_DMA_INT_ENA 0x014 | |
2d4aa21a YS |
31 | #define USB3_DMA_CH0_CON(n) (0x030 + ((n) - 1) * 0x10) /* n = 1 to 4 */ |
32 | #define USB3_DMA_CH0_PRD_ADR(n) (0x034 + ((n) - 1) * 0x10) /* n = 1 to 4 */ | |
746bfe63 YS |
33 | #define USB3_USB_COM_CON 0x200 |
34 | #define USB3_USB20_CON 0x204 | |
35 | #define USB3_USB30_CON 0x208 | |
36 | #define USB3_USB_STA 0x210 | |
37 | #define USB3_DRD_CON 0x218 | |
38 | #define USB3_USB_INT_STA_1 0x220 | |
39 | #define USB3_USB_INT_STA_2 0x224 | |
40 | #define USB3_USB_INT_ENA_1 0x228 | |
41 | #define USB3_USB_INT_ENA_2 0x22c | |
42 | #define USB3_STUP_DAT_0 0x230 | |
43 | #define USB3_STUP_DAT_1 0x234 | |
77172a1f YS |
44 | #define USB3_USB_OTG_STA 0x268 |
45 | #define USB3_USB_OTG_INT_STA 0x26c | |
46 | #define USB3_USB_OTG_INT_ENA 0x270 | |
746bfe63 YS |
47 | #define USB3_P0_MOD 0x280 |
48 | #define USB3_P0_CON 0x288 | |
49 | #define USB3_P0_STA 0x28c | |
50 | #define USB3_P0_INT_STA 0x290 | |
51 | #define USB3_P0_INT_ENA 0x294 | |
52 | #define USB3_P0_LNG 0x2a0 | |
53 | #define USB3_P0_READ 0x2a4 | |
54 | #define USB3_P0_WRITE 0x2a8 | |
55 | #define USB3_PIPE_COM 0x2b0 | |
56 | #define USB3_PN_MOD 0x2c0 | |
57 | #define USB3_PN_RAMMAP 0x2c4 | |
58 | #define USB3_PN_CON 0x2c8 | |
59 | #define USB3_PN_STA 0x2cc | |
60 | #define USB3_PN_INT_STA 0x2d0 | |
61 | #define USB3_PN_INT_ENA 0x2d4 | |
62 | #define USB3_PN_LNG 0x2e0 | |
63 | #define USB3_PN_READ 0x2e4 | |
64 | #define USB3_PN_WRITE 0x2e8 | |
65 | #define USB3_SSIFCMD 0x340 | |
66 | ||
67 | /* AXI_INT_ENA and AXI_INT_STA */ | |
68 | #define AXI_INT_DMAINT BIT(31) | |
69 | #define AXI_INT_EPCINT BIT(30) | |
2d4aa21a YS |
70 | /* PRD's n = from 1 to 4 */ |
71 | #define AXI_INT_PRDEN_CLR_STA_SHIFT(n) (16 + (n) - 1) | |
72 | #define AXI_INT_PRDERR_STA_SHIFT(n) (0 + (n) - 1) | |
73 | #define AXI_INT_PRDEN_CLR_STA(n) (1 << AXI_INT_PRDEN_CLR_STA_SHIFT(n)) | |
74 | #define AXI_INT_PRDERR_STA(n) (1 << AXI_INT_PRDERR_STA_SHIFT(n)) | |
75 | ||
76 | /* DMA_INT_ENA and DMA_INT_STA */ | |
77 | #define DMA_INT(n) BIT(n) | |
78 | ||
79 | /* DMA_CH0_CONn */ | |
80 | #define DMA_CON_PIPE_DIR BIT(15) /* 1: In Transfer */ | |
81 | #define DMA_CON_PIPE_NO_SHIFT 8 | |
82 | #define DMA_CON_PIPE_NO_MASK GENMASK(12, DMA_CON_PIPE_NO_SHIFT) | |
83 | #define DMA_COM_PIPE_NO(n) (((n) << DMA_CON_PIPE_NO_SHIFT) & \ | |
84 | DMA_CON_PIPE_NO_MASK) | |
85 | #define DMA_CON_PRD_EN BIT(0) | |
746bfe63 YS |
86 | |
87 | /* LCLKSEL */ | |
88 | #define LCLKSEL_LSEL BIT(18) | |
89 | ||
90 | /* USB_COM_CON */ | |
91 | #define USB_COM_CON_CONF BIT(24) | |
ebe6b2b8 YS |
92 | #define USB_COM_CON_PN_WDATAIF_NL BIT(23) |
93 | #define USB_COM_CON_PN_RDATAIF_NL BIT(22) | |
94 | #define USB_COM_CON_PN_LSTTR_PP BIT(21) | |
746bfe63 YS |
95 | #define USB_COM_CON_SPD_MODE BIT(17) |
96 | #define USB_COM_CON_EP0_EN BIT(16) | |
97 | #define USB_COM_CON_DEV_ADDR_SHIFT 8 | |
98 | #define USB_COM_CON_DEV_ADDR_MASK GENMASK(14, USB_COM_CON_DEV_ADDR_SHIFT) | |
99 | #define USB_COM_CON_DEV_ADDR(n) (((n) << USB_COM_CON_DEV_ADDR_SHIFT) & \ | |
100 | USB_COM_CON_DEV_ADDR_MASK) | |
101 | #define USB_COM_CON_RX_DETECTION BIT(1) | |
102 | #define USB_COM_CON_PIPE_CLR BIT(0) | |
103 | ||
104 | /* USB20_CON */ | |
105 | #define USB20_CON_B2_PUE BIT(31) | |
106 | #define USB20_CON_B2_SUSPEND BIT(24) | |
107 | #define USB20_CON_B2_CONNECT BIT(17) | |
108 | #define USB20_CON_B2_TSTMOD_SHIFT 8 | |
109 | #define USB20_CON_B2_TSTMOD_MASK GENMASK(10, USB20_CON_B2_TSTMOD_SHIFT) | |
110 | #define USB20_CON_B2_TSTMOD(n) (((n) << USB20_CON_B2_TSTMOD_SHIFT) & \ | |
111 | USB20_CON_B2_TSTMOD_MASK) | |
112 | #define USB20_CON_B2_TSTMOD_EN BIT(0) | |
113 | ||
114 | /* USB30_CON */ | |
115 | #define USB30_CON_POW_SEL_SHIFT 24 | |
116 | #define USB30_CON_POW_SEL_MASK GENMASK(26, USB30_CON_POW_SEL_SHIFT) | |
117 | #define USB30_CON_POW_SEL_IN_U3 BIT(26) | |
118 | #define USB30_CON_POW_SEL_IN_DISCON 0 | |
119 | #define USB30_CON_POW_SEL_P2_TO_P0 BIT(25) | |
120 | #define USB30_CON_POW_SEL_P0_TO_P3 BIT(24) | |
121 | #define USB30_CON_POW_SEL_P0_TO_P2 0 | |
122 | #define USB30_CON_B3_PLLWAKE BIT(23) | |
123 | #define USB30_CON_B3_CONNECT BIT(17) | |
124 | #define USB30_CON_B3_HOTRST_CMP BIT(1) | |
125 | ||
126 | /* USB_STA */ | |
127 | #define USB_STA_SPEED_MASK (BIT(2) | BIT(1)) | |
128 | #define USB_STA_SPEED_HS BIT(2) | |
129 | #define USB_STA_SPEED_FS BIT(1) | |
130 | #define USB_STA_SPEED_SS 0 | |
131 | #define USB_STA_VBUS_STA BIT(0) | |
132 | ||
133 | /* DRD_CON */ | |
134 | #define DRD_CON_PERI_CON BIT(24) | |
b2f1eaae | 135 | #define DRD_CON_VBOUT BIT(0) |
746bfe63 YS |
136 | |
137 | /* USB_INT_ENA_1 and USB_INT_STA_1 */ | |
138 | #define USB_INT_1_B3_PLLWKUP BIT(31) | |
139 | #define USB_INT_1_B3_LUPSUCS BIT(30) | |
140 | #define USB_INT_1_B3_DISABLE BIT(27) | |
141 | #define USB_INT_1_B3_WRMRST BIT(21) | |
142 | #define USB_INT_1_B3_HOTRST BIT(20) | |
143 | #define USB_INT_1_B2_USBRST BIT(12) | |
144 | #define USB_INT_1_B2_L1SPND BIT(11) | |
145 | #define USB_INT_1_B2_SPND BIT(9) | |
146 | #define USB_INT_1_B2_RSUM BIT(8) | |
147 | #define USB_INT_1_SPEED BIT(1) | |
148 | #define USB_INT_1_VBUS_CNG BIT(0) | |
149 | ||
150 | /* USB_INT_ENA_2 and USB_INT_STA_2 */ | |
151 | #define USB_INT_2_PIPE(n) BIT(n) | |
152 | ||
77172a1f YS |
153 | /* USB_OTG_STA, USB_OTG_INT_STA and USB_OTG_INT_ENA */ |
154 | #define USB_OTG_IDMON BIT(4) | |
155 | ||
746bfe63 YS |
156 | /* P0_MOD */ |
157 | #define P0_MOD_DIR BIT(6) | |
158 | ||
159 | /* P0_CON and PN_CON */ | |
160 | #define PX_CON_BYTE_EN_MASK (BIT(10) | BIT(9)) | |
161 | #define PX_CON_BYTE_EN_SHIFT 9 | |
162 | #define PX_CON_BYTE_EN_BYTES(n) (((n) << PX_CON_BYTE_EN_SHIFT) & \ | |
163 | PX_CON_BYTE_EN_MASK) | |
164 | #define PX_CON_SEND BIT(8) | |
165 | ||
166 | /* P0_CON */ | |
167 | #define P0_CON_ST_RES_MASK (BIT(27) | BIT(26)) | |
168 | #define P0_CON_ST_RES_FORCE_STALL BIT(27) | |
169 | #define P0_CON_ST_RES_NORMAL BIT(26) | |
170 | #define P0_CON_ST_RES_FORCE_NRDY 0 | |
171 | #define P0_CON_OT_RES_MASK (BIT(25) | BIT(24)) | |
172 | #define P0_CON_OT_RES_FORCE_STALL BIT(25) | |
173 | #define P0_CON_OT_RES_NORMAL BIT(24) | |
174 | #define P0_CON_OT_RES_FORCE_NRDY 0 | |
175 | #define P0_CON_IN_RES_MASK (BIT(17) | BIT(16)) | |
176 | #define P0_CON_IN_RES_FORCE_STALL BIT(17) | |
177 | #define P0_CON_IN_RES_NORMAL BIT(16) | |
178 | #define P0_CON_IN_RES_FORCE_NRDY 0 | |
179 | #define P0_CON_RES_WEN BIT(7) | |
180 | #define P0_CON_BCLR BIT(1) | |
181 | ||
182 | /* P0_STA and PN_STA */ | |
183 | #define PX_STA_BUFSTS BIT(0) | |
184 | ||
185 | /* P0_INT_ENA and P0_INT_STA */ | |
186 | #define P0_INT_STSED BIT(18) | |
187 | #define P0_INT_STSST BIT(17) | |
188 | #define P0_INT_SETUP BIT(16) | |
189 | #define P0_INT_RCVNL BIT(8) | |
190 | #define P0_INT_ERDY BIT(7) | |
191 | #define P0_INT_FLOW BIT(6) | |
192 | #define P0_INT_STALL BIT(2) | |
193 | #define P0_INT_NRDY BIT(1) | |
194 | #define P0_INT_BFRDY BIT(0) | |
195 | #define P0_INT_ALL_BITS (P0_INT_STSED | P0_INT_SETUP | P0_INT_BFRDY) | |
196 | ||
197 | /* PN_MOD */ | |
198 | #define PN_MOD_DIR BIT(6) | |
199 | #define PN_MOD_TYPE_SHIFT 4 | |
200 | #define PN_MOD_TYPE_MASK GENMASK(5, PN_MOD_TYPE_SHIFT) | |
201 | #define PN_MOD_TYPE(n) (((n) << PN_MOD_TYPE_SHIFT) & \ | |
202 | PN_MOD_TYPE_MASK) | |
203 | #define PN_MOD_EPNUM_MASK GENMASK(3, 0) | |
204 | #define PN_MOD_EPNUM(n) ((n) & PN_MOD_EPNUM_MASK) | |
205 | ||
206 | /* PN_RAMMAP */ | |
207 | #define PN_RAMMAP_RAMAREA_SHIFT 29 | |
208 | #define PN_RAMMAP_RAMAREA_MASK GENMASK(31, PN_RAMMAP_RAMAREA_SHIFT) | |
209 | #define PN_RAMMAP_RAMAREA_16KB BIT(31) | |
210 | #define PN_RAMMAP_RAMAREA_8KB (BIT(30) | BIT(29)) | |
211 | #define PN_RAMMAP_RAMAREA_4KB BIT(30) | |
212 | #define PN_RAMMAP_RAMAREA_2KB BIT(29) | |
213 | #define PN_RAMMAP_RAMAREA_1KB 0 | |
214 | #define PN_RAMMAP_MPKT_SHIFT 16 | |
215 | #define PN_RAMMAP_MPKT_MASK GENMASK(26, PN_RAMMAP_MPKT_SHIFT) | |
216 | #define PN_RAMMAP_MPKT(n) (((n) << PN_RAMMAP_MPKT_SHIFT) & \ | |
217 | PN_RAMMAP_MPKT_MASK) | |
218 | #define PN_RAMMAP_RAMIF_SHIFT 14 | |
219 | #define PN_RAMMAP_RAMIF_MASK GENMASK(15, PN_RAMMAP_RAMIF_SHIFT) | |
220 | #define PN_RAMMAP_RAMIF(n) (((n) << PN_RAMMAP_RAMIF_SHIFT) & \ | |
221 | PN_RAMMAP_RAMIF_MASK) | |
222 | #define PN_RAMMAP_BASEAD_MASK GENMASK(13, 0) | |
223 | #define PN_RAMMAP_BASEAD(offs) (((offs) >> 3) & PN_RAMMAP_BASEAD_MASK) | |
224 | #define PN_RAMMAP_DATA(area, ramif, basead) ((PN_RAMMAP_##area) | \ | |
225 | (PN_RAMMAP_RAMIF(ramif)) | \ | |
226 | (PN_RAMMAP_BASEAD(basead))) | |
227 | ||
228 | /* PN_CON */ | |
229 | #define PN_CON_EN BIT(31) | |
230 | #define PN_CON_DATAIF_EN BIT(30) | |
231 | #define PN_CON_RES_MASK (BIT(17) | BIT(16)) | |
232 | #define PN_CON_RES_FORCE_STALL BIT(17) | |
233 | #define PN_CON_RES_NORMAL BIT(16) | |
234 | #define PN_CON_RES_FORCE_NRDY 0 | |
235 | #define PN_CON_LAST BIT(11) | |
236 | #define PN_CON_RES_WEN BIT(7) | |
237 | #define PN_CON_CLR BIT(0) | |
238 | ||
239 | /* PN_INT_STA and PN_INT_ENA */ | |
240 | #define PN_INT_LSTTR BIT(4) | |
241 | #define PN_INT_BFRDY BIT(0) | |
242 | ||
243 | /* USB3_SSIFCMD */ | |
244 | #define SSIFCMD_URES_U2 BIT(9) | |
245 | #define SSIFCMD_URES_U1 BIT(8) | |
246 | #define SSIFCMD_UDIR_U2 BIT(7) | |
247 | #define SSIFCMD_UDIR_U1 BIT(6) | |
248 | #define SSIFCMD_UREQ_U2 BIT(5) | |
249 | #define SSIFCMD_UREQ_U1 BIT(4) | |
250 | ||
251 | #define USB3_EP0_SS_MAX_PACKET_SIZE 512 | |
252 | #define USB3_EP0_HSFS_MAX_PACKET_SIZE 64 | |
253 | #define USB3_EP0_BUF_SIZE 8 | |
254 | #define USB3_MAX_NUM_PIPES 30 | |
255 | #define USB3_WAIT_US 3 | |
2d4aa21a YS |
256 | #define USB3_DMA_NUM_SETTING_AREA 4 |
257 | /* | |
258 | * To avoid double-meaning of "0" (xferred 65536 bytes or received zlp if | |
259 | * buffer size is 65536), this driver uses the maximum size per a entry is | |
260 | * 32768 bytes. | |
261 | */ | |
262 | #define USB3_DMA_MAX_XFER_SIZE 32768 | |
263 | #define USB3_DMA_PRD_SIZE 4096 | |
746bfe63 YS |
264 | |
265 | struct renesas_usb3; | |
2d4aa21a YS |
266 | |
267 | /* Physical Region Descriptor Table */ | |
268 | struct renesas_usb3_prd { | |
269 | u32 word1; | |
270 | #define USB3_PRD1_E BIT(30) /* the end of chain */ | |
271 | #define USB3_PRD1_U BIT(29) /* completion of transfer */ | |
272 | #define USB3_PRD1_D BIT(28) /* Error occurred */ | |
273 | #define USB3_PRD1_INT BIT(27) /* Interrupt occurred */ | |
274 | #define USB3_PRD1_LST BIT(26) /* Last Packet */ | |
275 | #define USB3_PRD1_B_INC BIT(24) | |
276 | #define USB3_PRD1_MPS_8 0 | |
277 | #define USB3_PRD1_MPS_16 BIT(21) | |
278 | #define USB3_PRD1_MPS_32 BIT(22) | |
279 | #define USB3_PRD1_MPS_64 (BIT(22) | BIT(21)) | |
280 | #define USB3_PRD1_MPS_512 BIT(23) | |
281 | #define USB3_PRD1_MPS_1024 (BIT(23) | BIT(21)) | |
282 | #define USB3_PRD1_MPS_RESERVED (BIT(23) | BIT(22) | BIT(21)) | |
283 | #define USB3_PRD1_SIZE_MASK GENMASK(15, 0) | |
284 | ||
285 | u32 bap; | |
286 | }; | |
287 | #define USB3_DMA_NUM_PRD_ENTRIES (USB3_DMA_PRD_SIZE / \ | |
288 | sizeof(struct renesas_usb3_prd)) | |
289 | #define USB3_DMA_MAX_XFER_SIZE_ALL_PRDS (USB3_DMA_PRD_SIZE / \ | |
290 | sizeof(struct renesas_usb3_prd) * \ | |
291 | USB3_DMA_MAX_XFER_SIZE) | |
292 | ||
293 | struct renesas_usb3_dma { | |
294 | struct renesas_usb3_prd *prd; | |
295 | dma_addr_t prd_dma; | |
296 | int num; /* Setting area number (from 1 to 4) */ | |
297 | bool used; | |
298 | }; | |
299 | ||
746bfe63 YS |
300 | struct renesas_usb3_request { |
301 | struct usb_request req; | |
302 | struct list_head queue; | |
303 | }; | |
304 | ||
305 | #define USB3_EP_NAME_SIZE 8 | |
306 | struct renesas_usb3_ep { | |
307 | struct usb_ep ep; | |
308 | struct renesas_usb3 *usb3; | |
2d4aa21a | 309 | struct renesas_usb3_dma *dma; |
746bfe63 YS |
310 | int num; |
311 | char ep_name[USB3_EP_NAME_SIZE]; | |
312 | struct list_head queue; | |
313 | u32 rammap_val; | |
314 | bool dir_in; | |
315 | bool halt; | |
316 | bool wedge; | |
317 | bool started; | |
318 | }; | |
319 | ||
320 | struct renesas_usb3_priv { | |
321 | int ramsize_per_ramif; /* unit = bytes */ | |
322 | int num_ramif; | |
323 | int ramsize_per_pipe; /* unit = bytes */ | |
324 | bool workaround_for_vbus; /* if true, don't check vbus signal */ | |
325 | }; | |
326 | ||
327 | struct renesas_usb3 { | |
328 | void __iomem *reg; | |
329 | ||
330 | struct usb_gadget gadget; | |
331 | struct usb_gadget_driver *driver; | |
3b68e7ca YS |
332 | struct extcon_dev *extcon; |
333 | struct work_struct extcon_work; | |
746bfe63 YS |
334 | |
335 | struct renesas_usb3_ep *usb3_ep; | |
336 | int num_usb3_eps; | |
337 | ||
2d4aa21a YS |
338 | struct renesas_usb3_dma dma[USB3_DMA_NUM_SETTING_AREA]; |
339 | ||
746bfe63 YS |
340 | spinlock_t lock; |
341 | int disabled_count; | |
342 | ||
343 | struct usb_request *ep0_req; | |
344 | u16 test_mode; | |
345 | u8 ep0_buf[USB3_EP0_BUF_SIZE]; | |
346 | bool softconnect; | |
347 | bool workaround_for_vbus; | |
3b68e7ca YS |
348 | bool extcon_host; /* check id and set EXTCON_USB_HOST */ |
349 | bool extcon_usb; /* check vbus and set EXTCON_USB */ | |
746bfe63 YS |
350 | }; |
351 | ||
352 | #define gadget_to_renesas_usb3(_gadget) \ | |
353 | container_of(_gadget, struct renesas_usb3, gadget) | |
354 | #define renesas_usb3_to_gadget(renesas_usb3) (&renesas_usb3->gadget) | |
355 | #define usb3_to_dev(_usb3) (_usb3->gadget.dev.parent) | |
356 | ||
357 | #define usb_ep_to_usb3_ep(_ep) container_of(_ep, struct renesas_usb3_ep, ep) | |
358 | #define usb3_ep_to_usb3(_usb3_ep) (_usb3_ep->usb3) | |
359 | #define usb_req_to_usb3_req(_req) container_of(_req, \ | |
360 | struct renesas_usb3_request, req) | |
361 | ||
362 | #define usb3_get_ep(usb3, n) ((usb3)->usb3_ep + (n)) | |
363 | #define usb3_for_each_ep(usb3_ep, usb3, i) \ | |
364 | for ((i) = 0, usb3_ep = usb3_get_ep(usb3, (i)); \ | |
365 | (i) < (usb3)->num_usb3_eps; \ | |
366 | (i)++, usb3_ep = usb3_get_ep(usb3, (i))) | |
367 | ||
2d4aa21a YS |
368 | #define usb3_get_dma(usb3, i) (&(usb3)->dma[i]) |
369 | #define usb3_for_each_dma(usb3, dma, i) \ | |
370 | for ((i) = 0, dma = usb3_get_dma((usb3), (i)); \ | |
371 | (i) < USB3_DMA_NUM_SETTING_AREA; \ | |
372 | (i)++, dma = usb3_get_dma((usb3), (i))) | |
373 | ||
746bfe63 YS |
374 | static const char udc_name[] = "renesas_usb3"; |
375 | ||
2d4aa21a YS |
376 | static bool use_dma = 1; |
377 | module_param(use_dma, bool, 0644); | |
378 | MODULE_PARM_DESC(use_dma, "use dedicated DMAC"); | |
379 | ||
746bfe63 YS |
380 | static void usb3_write(struct renesas_usb3 *usb3, u32 data, u32 offs) |
381 | { | |
382 | iowrite32(data, usb3->reg + offs); | |
383 | } | |
384 | ||
385 | static u32 usb3_read(struct renesas_usb3 *usb3, u32 offs) | |
386 | { | |
387 | return ioread32(usb3->reg + offs); | |
388 | } | |
389 | ||
390 | static void usb3_set_bit(struct renesas_usb3 *usb3, u32 bits, u32 offs) | |
391 | { | |
392 | u32 val = usb3_read(usb3, offs); | |
393 | ||
394 | val |= bits; | |
395 | usb3_write(usb3, val, offs); | |
396 | } | |
397 | ||
398 | static void usb3_clear_bit(struct renesas_usb3 *usb3, u32 bits, u32 offs) | |
399 | { | |
400 | u32 val = usb3_read(usb3, offs); | |
401 | ||
402 | val &= ~bits; | |
403 | usb3_write(usb3, val, offs); | |
404 | } | |
405 | ||
406 | static int usb3_wait(struct renesas_usb3 *usb3, u32 reg, u32 mask, | |
407 | u32 expected) | |
408 | { | |
409 | int i; | |
410 | ||
411 | for (i = 0; i < USB3_WAIT_US; i++) { | |
412 | if ((usb3_read(usb3, reg) & mask) == expected) | |
413 | return 0; | |
414 | udelay(1); | |
415 | } | |
416 | ||
417 | dev_dbg(usb3_to_dev(usb3), "%s: timed out (%8x, %08x, %08x)\n", | |
418 | __func__, reg, mask, expected); | |
419 | ||
420 | return -EBUSY; | |
421 | } | |
422 | ||
3b68e7ca YS |
423 | static void renesas_usb3_extcon_work(struct work_struct *work) |
424 | { | |
425 | struct renesas_usb3 *usb3 = container_of(work, struct renesas_usb3, | |
426 | extcon_work); | |
427 | ||
428 | extcon_set_state_sync(usb3->extcon, EXTCON_USB_HOST, usb3->extcon_host); | |
429 | extcon_set_state_sync(usb3->extcon, EXTCON_USB, usb3->extcon_usb); | |
430 | } | |
431 | ||
746bfe63 YS |
432 | static void usb3_enable_irq_1(struct renesas_usb3 *usb3, u32 bits) |
433 | { | |
434 | usb3_set_bit(usb3, bits, USB3_USB_INT_ENA_1); | |
435 | } | |
436 | ||
437 | static void usb3_disable_irq_1(struct renesas_usb3 *usb3, u32 bits) | |
438 | { | |
439 | usb3_clear_bit(usb3, bits, USB3_USB_INT_ENA_1); | |
440 | } | |
441 | ||
442 | static void usb3_enable_pipe_irq(struct renesas_usb3 *usb3, int num) | |
443 | { | |
444 | usb3_set_bit(usb3, USB_INT_2_PIPE(num), USB3_USB_INT_ENA_2); | |
445 | } | |
446 | ||
447 | static void usb3_disable_pipe_irq(struct renesas_usb3 *usb3, int num) | |
448 | { | |
449 | usb3_clear_bit(usb3, USB_INT_2_PIPE(num), USB3_USB_INT_ENA_2); | |
450 | } | |
451 | ||
cc995c9e YS |
452 | static bool usb3_is_host(struct renesas_usb3 *usb3) |
453 | { | |
454 | return !(usb3_read(usb3, USB3_DRD_CON) & DRD_CON_PERI_CON); | |
455 | } | |
456 | ||
746bfe63 YS |
457 | static void usb3_init_axi_bridge(struct renesas_usb3 *usb3) |
458 | { | |
459 | /* Set AXI_INT */ | |
460 | usb3_write(usb3, ~0, USB3_DMA_INT_STA); | |
461 | usb3_write(usb3, 0, USB3_DMA_INT_ENA); | |
462 | usb3_set_bit(usb3, AXI_INT_DMAINT | AXI_INT_EPCINT, USB3_AXI_INT_ENA); | |
463 | } | |
464 | ||
465 | static void usb3_init_epc_registers(struct renesas_usb3 *usb3) | |
466 | { | |
746bfe63 YS |
467 | usb3_write(usb3, ~0, USB3_USB_INT_STA_1); |
468 | usb3_enable_irq_1(usb3, USB_INT_1_VBUS_CNG); | |
469 | } | |
470 | ||
471 | static bool usb3_wakeup_usb2_phy(struct renesas_usb3 *usb3) | |
472 | { | |
473 | if (!(usb3_read(usb3, USB3_USB20_CON) & USB20_CON_B2_SUSPEND)) | |
474 | return true; /* already waked it up */ | |
475 | ||
476 | usb3_clear_bit(usb3, USB20_CON_B2_SUSPEND, USB3_USB20_CON); | |
477 | usb3_enable_irq_1(usb3, USB_INT_1_B2_RSUM); | |
478 | ||
479 | return false; | |
480 | } | |
481 | ||
482 | static void usb3_usb2_pullup(struct renesas_usb3 *usb3, int pullup) | |
483 | { | |
484 | u32 bits = USB20_CON_B2_PUE | USB20_CON_B2_CONNECT; | |
485 | ||
486 | if (usb3->softconnect && pullup) | |
487 | usb3_set_bit(usb3, bits, USB3_USB20_CON); | |
488 | else | |
489 | usb3_clear_bit(usb3, bits, USB3_USB20_CON); | |
490 | } | |
491 | ||
492 | static void usb3_set_test_mode(struct renesas_usb3 *usb3) | |
493 | { | |
494 | u32 val = usb3_read(usb3, USB3_USB20_CON); | |
495 | ||
496 | val &= ~USB20_CON_B2_TSTMOD_MASK; | |
497 | val |= USB20_CON_B2_TSTMOD(usb3->test_mode); | |
498 | usb3_write(usb3, val | USB20_CON_B2_TSTMOD_EN, USB3_USB20_CON); | |
499 | if (!usb3->test_mode) | |
500 | usb3_clear_bit(usb3, USB20_CON_B2_TSTMOD_EN, USB3_USB20_CON); | |
501 | } | |
502 | ||
503 | static void usb3_start_usb2_connection(struct renesas_usb3 *usb3) | |
504 | { | |
505 | usb3->disabled_count++; | |
506 | usb3_set_bit(usb3, USB_COM_CON_EP0_EN, USB3_USB_COM_CON); | |
507 | usb3_set_bit(usb3, USB_COM_CON_SPD_MODE, USB3_USB_COM_CON); | |
508 | usb3_usb2_pullup(usb3, 1); | |
509 | } | |
510 | ||
511 | static int usb3_is_usb3_phy_in_u3(struct renesas_usb3 *usb3) | |
512 | { | |
513 | return usb3_read(usb3, USB3_USB30_CON) & USB30_CON_POW_SEL_IN_U3; | |
514 | } | |
515 | ||
516 | static bool usb3_wakeup_usb3_phy(struct renesas_usb3 *usb3) | |
517 | { | |
518 | if (!usb3_is_usb3_phy_in_u3(usb3)) | |
519 | return true; /* already waked it up */ | |
520 | ||
521 | usb3_set_bit(usb3, USB30_CON_B3_PLLWAKE, USB3_USB30_CON); | |
522 | usb3_enable_irq_1(usb3, USB_INT_1_B3_PLLWKUP); | |
523 | ||
524 | return false; | |
525 | } | |
526 | ||
527 | static u16 usb3_feature_get_un_enabled(struct renesas_usb3 *usb3) | |
528 | { | |
529 | u32 mask_u2 = SSIFCMD_UDIR_U2 | SSIFCMD_UREQ_U2; | |
530 | u32 mask_u1 = SSIFCMD_UDIR_U1 | SSIFCMD_UREQ_U1; | |
531 | u32 val = usb3_read(usb3, USB3_SSIFCMD); | |
532 | u16 ret = 0; | |
533 | ||
534 | /* Enables {U2,U1} if the bits of UDIR and UREQ are set to 0 */ | |
535 | if (!(val & mask_u2)) | |
536 | ret |= 1 << USB_DEV_STAT_U2_ENABLED; | |
537 | if (!(val & mask_u1)) | |
538 | ret |= 1 << USB_DEV_STAT_U1_ENABLED; | |
539 | ||
540 | return ret; | |
541 | } | |
542 | ||
543 | static void usb3_feature_u2_enable(struct renesas_usb3 *usb3, bool enable) | |
544 | { | |
545 | u32 bits = SSIFCMD_UDIR_U2 | SSIFCMD_UREQ_U2; | |
546 | ||
547 | /* Enables U2 if the bits of UDIR and UREQ are set to 0 */ | |
548 | if (enable) | |
549 | usb3_clear_bit(usb3, bits, USB3_SSIFCMD); | |
550 | else | |
551 | usb3_set_bit(usb3, bits, USB3_SSIFCMD); | |
552 | } | |
553 | ||
554 | static void usb3_feature_u1_enable(struct renesas_usb3 *usb3, bool enable) | |
555 | { | |
556 | u32 bits = SSIFCMD_UDIR_U1 | SSIFCMD_UREQ_U1; | |
557 | ||
558 | /* Enables U1 if the bits of UDIR and UREQ are set to 0 */ | |
559 | if (enable) | |
560 | usb3_clear_bit(usb3, bits, USB3_SSIFCMD); | |
561 | else | |
562 | usb3_set_bit(usb3, bits, USB3_SSIFCMD); | |
563 | } | |
564 | ||
565 | static void usb3_start_operation_for_usb3(struct renesas_usb3 *usb3) | |
566 | { | |
567 | usb3_set_bit(usb3, USB_COM_CON_EP0_EN, USB3_USB_COM_CON); | |
568 | usb3_clear_bit(usb3, USB_COM_CON_SPD_MODE, USB3_USB_COM_CON); | |
569 | usb3_set_bit(usb3, USB30_CON_B3_CONNECT, USB3_USB30_CON); | |
570 | } | |
571 | ||
572 | static void usb3_start_usb3_connection(struct renesas_usb3 *usb3) | |
573 | { | |
574 | usb3_start_operation_for_usb3(usb3); | |
575 | usb3_set_bit(usb3, USB_COM_CON_RX_DETECTION, USB3_USB_COM_CON); | |
576 | ||
577 | usb3_enable_irq_1(usb3, USB_INT_1_B3_LUPSUCS | USB_INT_1_B3_DISABLE | | |
578 | USB_INT_1_SPEED); | |
579 | } | |
580 | ||
581 | static void usb3_stop_usb3_connection(struct renesas_usb3 *usb3) | |
582 | { | |
583 | usb3_clear_bit(usb3, USB30_CON_B3_CONNECT, USB3_USB30_CON); | |
584 | } | |
585 | ||
586 | static void usb3_transition_to_default_state(struct renesas_usb3 *usb3, | |
587 | bool is_usb3) | |
588 | { | |
589 | usb3_set_bit(usb3, USB_INT_2_PIPE(0), USB3_USB_INT_ENA_2); | |
590 | usb3_write(usb3, P0_INT_ALL_BITS, USB3_P0_INT_STA); | |
591 | usb3_set_bit(usb3, P0_INT_ALL_BITS, USB3_P0_INT_ENA); | |
592 | ||
593 | if (is_usb3) | |
594 | usb3_enable_irq_1(usb3, USB_INT_1_B3_WRMRST | | |
595 | USB_INT_1_B3_HOTRST); | |
596 | else | |
597 | usb3_enable_irq_1(usb3, USB_INT_1_B2_SPND | | |
598 | USB_INT_1_B2_L1SPND | USB_INT_1_B2_USBRST); | |
599 | } | |
600 | ||
601 | static void usb3_connect(struct renesas_usb3 *usb3) | |
602 | { | |
603 | if (usb3_wakeup_usb3_phy(usb3)) | |
604 | usb3_start_usb3_connection(usb3); | |
605 | } | |
606 | ||
607 | static void usb3_reset_epc(struct renesas_usb3 *usb3) | |
608 | { | |
609 | usb3_clear_bit(usb3, USB_COM_CON_CONF, USB3_USB_COM_CON); | |
610 | usb3_clear_bit(usb3, USB_COM_CON_EP0_EN, USB3_USB_COM_CON); | |
611 | usb3_set_bit(usb3, USB_COM_CON_PIPE_CLR, USB3_USB_COM_CON); | |
612 | usb3->test_mode = 0; | |
613 | usb3_set_test_mode(usb3); | |
614 | } | |
615 | ||
616 | static void usb3_disconnect(struct renesas_usb3 *usb3) | |
617 | { | |
618 | usb3->disabled_count = 0; | |
619 | usb3_usb2_pullup(usb3, 0); | |
620 | usb3_clear_bit(usb3, USB30_CON_B3_CONNECT, USB3_USB30_CON); | |
621 | usb3_reset_epc(usb3); | |
622 | ||
623 | if (usb3->driver) | |
624 | usb3->driver->disconnect(&usb3->gadget); | |
625 | } | |
626 | ||
627 | static void usb3_check_vbus(struct renesas_usb3 *usb3) | |
628 | { | |
629 | if (usb3->workaround_for_vbus) { | |
630 | usb3_connect(usb3); | |
631 | } else { | |
3b68e7ca YS |
632 | usb3->extcon_usb = !!(usb3_read(usb3, USB3_USB_STA) & |
633 | USB_STA_VBUS_STA); | |
634 | if (usb3->extcon_usb) | |
746bfe63 YS |
635 | usb3_connect(usb3); |
636 | else | |
637 | usb3_disconnect(usb3); | |
3b68e7ca YS |
638 | |
639 | schedule_work(&usb3->extcon_work); | |
746bfe63 YS |
640 | } |
641 | } | |
642 | ||
77172a1f YS |
643 | static void usb3_set_mode(struct renesas_usb3 *usb3, bool host) |
644 | { | |
645 | if (host) | |
646 | usb3_clear_bit(usb3, DRD_CON_PERI_CON, USB3_DRD_CON); | |
647 | else | |
648 | usb3_set_bit(usb3, DRD_CON_PERI_CON, USB3_DRD_CON); | |
649 | } | |
650 | ||
651 | static void usb3_vbus_out(struct renesas_usb3 *usb3, bool enable) | |
652 | { | |
653 | if (enable) | |
654 | usb3_set_bit(usb3, DRD_CON_VBOUT, USB3_DRD_CON); | |
655 | else | |
656 | usb3_clear_bit(usb3, DRD_CON_VBOUT, USB3_DRD_CON); | |
657 | } | |
658 | ||
659 | static void usb3_mode_config(struct renesas_usb3 *usb3, bool host, bool a_dev) | |
660 | { | |
cc995c9e YS |
661 | unsigned long flags; |
662 | ||
663 | spin_lock_irqsave(&usb3->lock, flags); | |
77172a1f YS |
664 | usb3_set_mode(usb3, host); |
665 | usb3_vbus_out(usb3, a_dev); | |
cc995c9e YS |
666 | if (!host && a_dev) /* for A-Peripheral */ |
667 | usb3_connect(usb3); | |
668 | spin_unlock_irqrestore(&usb3->lock, flags); | |
77172a1f YS |
669 | } |
670 | ||
671 | static bool usb3_is_a_device(struct renesas_usb3 *usb3) | |
672 | { | |
673 | return !(usb3_read(usb3, USB3_USB_OTG_STA) & USB_OTG_IDMON); | |
674 | } | |
675 | ||
676 | static void usb3_check_id(struct renesas_usb3 *usb3) | |
677 | { | |
3b68e7ca YS |
678 | usb3->extcon_host = usb3_is_a_device(usb3); |
679 | ||
680 | if (usb3->extcon_host) | |
77172a1f YS |
681 | usb3_mode_config(usb3, true, true); |
682 | else | |
683 | usb3_mode_config(usb3, false, false); | |
3b68e7ca YS |
684 | |
685 | schedule_work(&usb3->extcon_work); | |
77172a1f YS |
686 | } |
687 | ||
746bfe63 YS |
688 | static void renesas_usb3_init_controller(struct renesas_usb3 *usb3) |
689 | { | |
690 | usb3_init_axi_bridge(usb3); | |
691 | usb3_init_epc_registers(usb3); | |
ebe6b2b8 YS |
692 | usb3_set_bit(usb3, USB_COM_CON_PN_WDATAIF_NL | |
693 | USB_COM_CON_PN_RDATAIF_NL | USB_COM_CON_PN_LSTTR_PP, | |
694 | USB3_USB_COM_CON); | |
77172a1f YS |
695 | usb3_write(usb3, USB_OTG_IDMON, USB3_USB_OTG_INT_STA); |
696 | usb3_write(usb3, USB_OTG_IDMON, USB3_USB_OTG_INT_ENA); | |
746bfe63 | 697 | |
77172a1f | 698 | usb3_check_id(usb3); |
746bfe63 YS |
699 | usb3_check_vbus(usb3); |
700 | } | |
701 | ||
702 | static void renesas_usb3_stop_controller(struct renesas_usb3 *usb3) | |
703 | { | |
704 | usb3_disconnect(usb3); | |
705 | usb3_write(usb3, 0, USB3_P0_INT_ENA); | |
77172a1f | 706 | usb3_write(usb3, 0, USB3_USB_OTG_INT_ENA); |
746bfe63 YS |
707 | usb3_write(usb3, 0, USB3_USB_INT_ENA_1); |
708 | usb3_write(usb3, 0, USB3_USB_INT_ENA_2); | |
709 | usb3_write(usb3, 0, USB3_AXI_INT_ENA); | |
710 | } | |
711 | ||
712 | static void usb3_irq_epc_int_1_pll_wakeup(struct renesas_usb3 *usb3) | |
713 | { | |
714 | usb3_disable_irq_1(usb3, USB_INT_1_B3_PLLWKUP); | |
715 | usb3_clear_bit(usb3, USB30_CON_B3_PLLWAKE, USB3_USB30_CON); | |
716 | usb3_start_usb3_connection(usb3); | |
717 | } | |
718 | ||
719 | static void usb3_irq_epc_int_1_linkup_success(struct renesas_usb3 *usb3) | |
720 | { | |
721 | usb3_transition_to_default_state(usb3, true); | |
722 | } | |
723 | ||
724 | static void usb3_irq_epc_int_1_resume(struct renesas_usb3 *usb3) | |
725 | { | |
726 | usb3_disable_irq_1(usb3, USB_INT_1_B2_RSUM); | |
727 | usb3_start_usb2_connection(usb3); | |
728 | usb3_transition_to_default_state(usb3, false); | |
729 | } | |
730 | ||
731 | static void usb3_irq_epc_int_1_disable(struct renesas_usb3 *usb3) | |
732 | { | |
733 | usb3_stop_usb3_connection(usb3); | |
734 | if (usb3_wakeup_usb2_phy(usb3)) | |
735 | usb3_irq_epc_int_1_resume(usb3); | |
736 | } | |
737 | ||
738 | static void usb3_irq_epc_int_1_bus_reset(struct renesas_usb3 *usb3) | |
739 | { | |
740 | usb3_reset_epc(usb3); | |
741 | if (usb3->disabled_count < 3) | |
742 | usb3_start_usb3_connection(usb3); | |
743 | else | |
744 | usb3_start_usb2_connection(usb3); | |
745 | } | |
746 | ||
747 | static void usb3_irq_epc_int_1_vbus_change(struct renesas_usb3 *usb3) | |
748 | { | |
749 | usb3_check_vbus(usb3); | |
750 | } | |
751 | ||
752 | static void usb3_irq_epc_int_1_hot_reset(struct renesas_usb3 *usb3) | |
753 | { | |
754 | usb3_reset_epc(usb3); | |
755 | usb3_set_bit(usb3, USB_COM_CON_EP0_EN, USB3_USB_COM_CON); | |
756 | ||
757 | /* This bit shall be set within 12ms from the start of HotReset */ | |
758 | usb3_set_bit(usb3, USB30_CON_B3_HOTRST_CMP, USB3_USB30_CON); | |
759 | } | |
760 | ||
761 | static void usb3_irq_epc_int_1_warm_reset(struct renesas_usb3 *usb3) | |
762 | { | |
763 | usb3_reset_epc(usb3); | |
764 | usb3_set_bit(usb3, USB_COM_CON_EP0_EN, USB3_USB_COM_CON); | |
765 | ||
766 | usb3_start_operation_for_usb3(usb3); | |
767 | usb3_enable_irq_1(usb3, USB_INT_1_SPEED); | |
768 | } | |
769 | ||
770 | static void usb3_irq_epc_int_1_speed(struct renesas_usb3 *usb3) | |
771 | { | |
772 | u32 speed = usb3_read(usb3, USB3_USB_STA) & USB_STA_SPEED_MASK; | |
773 | ||
774 | switch (speed) { | |
775 | case USB_STA_SPEED_SS: | |
776 | usb3->gadget.speed = USB_SPEED_SUPER; | |
777 | break; | |
778 | case USB_STA_SPEED_HS: | |
779 | usb3->gadget.speed = USB_SPEED_HIGH; | |
780 | break; | |
781 | case USB_STA_SPEED_FS: | |
782 | usb3->gadget.speed = USB_SPEED_FULL; | |
783 | break; | |
784 | default: | |
785 | usb3->gadget.speed = USB_SPEED_UNKNOWN; | |
786 | break; | |
787 | } | |
788 | } | |
789 | ||
790 | static void usb3_irq_epc_int_1(struct renesas_usb3 *usb3, u32 int_sta_1) | |
791 | { | |
792 | if (int_sta_1 & USB_INT_1_B3_PLLWKUP) | |
793 | usb3_irq_epc_int_1_pll_wakeup(usb3); | |
794 | ||
795 | if (int_sta_1 & USB_INT_1_B3_LUPSUCS) | |
796 | usb3_irq_epc_int_1_linkup_success(usb3); | |
797 | ||
798 | if (int_sta_1 & USB_INT_1_B3_HOTRST) | |
799 | usb3_irq_epc_int_1_hot_reset(usb3); | |
800 | ||
801 | if (int_sta_1 & USB_INT_1_B3_WRMRST) | |
802 | usb3_irq_epc_int_1_warm_reset(usb3); | |
803 | ||
804 | if (int_sta_1 & USB_INT_1_B3_DISABLE) | |
805 | usb3_irq_epc_int_1_disable(usb3); | |
806 | ||
807 | if (int_sta_1 & USB_INT_1_B2_USBRST) | |
808 | usb3_irq_epc_int_1_bus_reset(usb3); | |
809 | ||
810 | if (int_sta_1 & USB_INT_1_B2_RSUM) | |
811 | usb3_irq_epc_int_1_resume(usb3); | |
812 | ||
813 | if (int_sta_1 & USB_INT_1_SPEED) | |
814 | usb3_irq_epc_int_1_speed(usb3); | |
815 | ||
816 | if (int_sta_1 & USB_INT_1_VBUS_CNG) | |
817 | usb3_irq_epc_int_1_vbus_change(usb3); | |
818 | } | |
819 | ||
820 | static struct renesas_usb3_request *__usb3_get_request(struct renesas_usb3_ep | |
821 | *usb3_ep) | |
822 | { | |
823 | return list_first_entry_or_null(&usb3_ep->queue, | |
824 | struct renesas_usb3_request, queue); | |
825 | } | |
826 | ||
827 | static struct renesas_usb3_request *usb3_get_request(struct renesas_usb3_ep | |
828 | *usb3_ep) | |
829 | { | |
830 | struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); | |
831 | struct renesas_usb3_request *usb3_req; | |
832 | unsigned long flags; | |
833 | ||
834 | spin_lock_irqsave(&usb3->lock, flags); | |
835 | usb3_req = __usb3_get_request(usb3_ep); | |
836 | spin_unlock_irqrestore(&usb3->lock, flags); | |
837 | ||
838 | return usb3_req; | |
839 | } | |
840 | ||
aca5b9eb YS |
841 | static void __usb3_request_done(struct renesas_usb3_ep *usb3_ep, |
842 | struct renesas_usb3_request *usb3_req, | |
843 | int status) | |
746bfe63 YS |
844 | { |
845 | struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); | |
746bfe63 YS |
846 | |
847 | dev_dbg(usb3_to_dev(usb3), "giveback: ep%2d, %u, %u, %d\n", | |
848 | usb3_ep->num, usb3_req->req.length, usb3_req->req.actual, | |
849 | status); | |
850 | usb3_req->req.status = status; | |
746bfe63 YS |
851 | usb3_ep->started = false; |
852 | list_del_init(&usb3_req->queue); | |
aca5b9eb | 853 | spin_unlock(&usb3->lock); |
746bfe63 | 854 | usb_gadget_giveback_request(&usb3_ep->ep, &usb3_req->req); |
aca5b9eb YS |
855 | spin_lock(&usb3->lock); |
856 | } | |
857 | ||
858 | static void usb3_request_done(struct renesas_usb3_ep *usb3_ep, | |
859 | struct renesas_usb3_request *usb3_req, int status) | |
860 | { | |
861 | struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); | |
862 | unsigned long flags; | |
863 | ||
864 | spin_lock_irqsave(&usb3->lock, flags); | |
865 | __usb3_request_done(usb3_ep, usb3_req, status); | |
866 | spin_unlock_irqrestore(&usb3->lock, flags); | |
746bfe63 YS |
867 | } |
868 | ||
869 | static void usb3_irq_epc_pipe0_status_end(struct renesas_usb3 *usb3) | |
870 | { | |
871 | struct renesas_usb3_ep *usb3_ep = usb3_get_ep(usb3, 0); | |
872 | struct renesas_usb3_request *usb3_req = usb3_get_request(usb3_ep); | |
873 | ||
874 | if (usb3_req) | |
875 | usb3_request_done(usb3_ep, usb3_req, 0); | |
876 | if (usb3->test_mode) | |
877 | usb3_set_test_mode(usb3); | |
878 | } | |
879 | ||
880 | static void usb3_get_setup_data(struct renesas_usb3 *usb3, | |
881 | struct usb_ctrlrequest *ctrl) | |
882 | { | |
883 | struct renesas_usb3_ep *usb3_ep = usb3_get_ep(usb3, 0); | |
884 | u32 *data = (u32 *)ctrl; | |
885 | ||
886 | *data++ = usb3_read(usb3, USB3_STUP_DAT_0); | |
887 | *data = usb3_read(usb3, USB3_STUP_DAT_1); | |
888 | ||
889 | /* update this driver's flag */ | |
890 | usb3_ep->dir_in = !!(ctrl->bRequestType & USB_DIR_IN); | |
891 | } | |
892 | ||
893 | static void usb3_set_p0_con_update_res(struct renesas_usb3 *usb3, u32 res) | |
894 | { | |
895 | u32 val = usb3_read(usb3, USB3_P0_CON); | |
896 | ||
897 | val &= ~(P0_CON_ST_RES_MASK | P0_CON_OT_RES_MASK | P0_CON_IN_RES_MASK); | |
898 | val |= res | P0_CON_RES_WEN; | |
899 | usb3_write(usb3, val, USB3_P0_CON); | |
900 | } | |
901 | ||
902 | static void usb3_set_p0_con_for_ctrl_read_data(struct renesas_usb3 *usb3) | |
903 | { | |
904 | usb3_set_p0_con_update_res(usb3, P0_CON_ST_RES_FORCE_NRDY | | |
905 | P0_CON_OT_RES_FORCE_STALL | | |
906 | P0_CON_IN_RES_NORMAL); | |
907 | } | |
908 | ||
909 | static void usb3_set_p0_con_for_ctrl_read_status(struct renesas_usb3 *usb3) | |
910 | { | |
911 | usb3_set_p0_con_update_res(usb3, P0_CON_ST_RES_NORMAL | | |
912 | P0_CON_OT_RES_FORCE_STALL | | |
913 | P0_CON_IN_RES_NORMAL); | |
914 | } | |
915 | ||
916 | static void usb3_set_p0_con_for_ctrl_write_data(struct renesas_usb3 *usb3) | |
917 | { | |
918 | usb3_set_p0_con_update_res(usb3, P0_CON_ST_RES_FORCE_NRDY | | |
919 | P0_CON_OT_RES_NORMAL | | |
920 | P0_CON_IN_RES_FORCE_STALL); | |
921 | } | |
922 | ||
923 | static void usb3_set_p0_con_for_ctrl_write_status(struct renesas_usb3 *usb3) | |
924 | { | |
925 | usb3_set_p0_con_update_res(usb3, P0_CON_ST_RES_NORMAL | | |
926 | P0_CON_OT_RES_NORMAL | | |
927 | P0_CON_IN_RES_FORCE_STALL); | |
928 | } | |
929 | ||
930 | static void usb3_set_p0_con_for_no_data(struct renesas_usb3 *usb3) | |
931 | { | |
932 | usb3_set_p0_con_update_res(usb3, P0_CON_ST_RES_NORMAL | | |
933 | P0_CON_OT_RES_FORCE_STALL | | |
934 | P0_CON_IN_RES_FORCE_STALL); | |
935 | } | |
936 | ||
937 | static void usb3_set_p0_con_stall(struct renesas_usb3 *usb3) | |
938 | { | |
939 | usb3_set_p0_con_update_res(usb3, P0_CON_ST_RES_FORCE_STALL | | |
940 | P0_CON_OT_RES_FORCE_STALL | | |
941 | P0_CON_IN_RES_FORCE_STALL); | |
942 | } | |
943 | ||
944 | static void usb3_set_p0_con_stop(struct renesas_usb3 *usb3) | |
945 | { | |
946 | usb3_set_p0_con_update_res(usb3, P0_CON_ST_RES_FORCE_NRDY | | |
947 | P0_CON_OT_RES_FORCE_NRDY | | |
948 | P0_CON_IN_RES_FORCE_NRDY); | |
949 | } | |
950 | ||
951 | static int usb3_pn_change(struct renesas_usb3 *usb3, int num) | |
952 | { | |
953 | if (num == 0 || num > usb3->num_usb3_eps) | |
954 | return -ENXIO; | |
955 | ||
956 | usb3_write(usb3, num, USB3_PIPE_COM); | |
957 | ||
958 | return 0; | |
959 | } | |
960 | ||
961 | static void usb3_set_pn_con_update_res(struct renesas_usb3 *usb3, u32 res) | |
962 | { | |
963 | u32 val = usb3_read(usb3, USB3_PN_CON); | |
964 | ||
965 | val &= ~PN_CON_RES_MASK; | |
966 | val |= res & PN_CON_RES_MASK; | |
967 | val |= PN_CON_RES_WEN; | |
968 | usb3_write(usb3, val, USB3_PN_CON); | |
969 | } | |
970 | ||
971 | static void usb3_pn_start(struct renesas_usb3 *usb3) | |
972 | { | |
973 | usb3_set_pn_con_update_res(usb3, PN_CON_RES_NORMAL); | |
974 | } | |
975 | ||
976 | static void usb3_pn_stop(struct renesas_usb3 *usb3) | |
977 | { | |
978 | usb3_set_pn_con_update_res(usb3, PN_CON_RES_FORCE_NRDY); | |
979 | } | |
980 | ||
981 | static void usb3_pn_stall(struct renesas_usb3 *usb3) | |
982 | { | |
983 | usb3_set_pn_con_update_res(usb3, PN_CON_RES_FORCE_STALL); | |
984 | } | |
985 | ||
986 | static int usb3_pn_con_clear(struct renesas_usb3 *usb3) | |
987 | { | |
988 | usb3_set_bit(usb3, PN_CON_CLR, USB3_PN_CON); | |
989 | ||
990 | return usb3_wait(usb3, USB3_PN_CON, PN_CON_CLR, 0); | |
991 | } | |
992 | ||
993 | static bool usb3_is_transfer_complete(struct renesas_usb3_ep *usb3_ep, | |
994 | struct renesas_usb3_request *usb3_req) | |
995 | { | |
996 | struct usb_request *req = &usb3_req->req; | |
997 | ||
998 | if ((!req->zero && req->actual == req->length) || | |
999 | (req->actual % usb3_ep->ep.maxpacket) || (req->length == 0)) | |
1000 | return true; | |
1001 | else | |
1002 | return false; | |
1003 | } | |
1004 | ||
1005 | static int usb3_wait_pipe_status(struct renesas_usb3_ep *usb3_ep, u32 mask) | |
1006 | { | |
1007 | struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); | |
1008 | u32 sta_reg = usb3_ep->num ? USB3_PN_STA : USB3_P0_STA; | |
1009 | ||
1010 | return usb3_wait(usb3, sta_reg, mask, mask); | |
1011 | } | |
1012 | ||
1013 | static void usb3_set_px_con_send(struct renesas_usb3_ep *usb3_ep, int bytes, | |
1014 | bool last) | |
1015 | { | |
1016 | struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); | |
1017 | u32 con_reg = usb3_ep->num ? USB3_PN_CON : USB3_P0_CON; | |
1018 | u32 val = usb3_read(usb3, con_reg); | |
1019 | ||
1020 | val |= PX_CON_SEND | PX_CON_BYTE_EN_BYTES(bytes); | |
1021 | val |= (usb3_ep->num && last) ? PN_CON_LAST : 0; | |
1022 | usb3_write(usb3, val, con_reg); | |
1023 | } | |
1024 | ||
1025 | static int usb3_write_pipe(struct renesas_usb3_ep *usb3_ep, | |
1026 | struct renesas_usb3_request *usb3_req, | |
1027 | u32 fifo_reg) | |
1028 | { | |
1029 | struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); | |
1030 | int i; | |
1031 | int len = min_t(unsigned, usb3_req->req.length - usb3_req->req.actual, | |
1032 | usb3_ep->ep.maxpacket); | |
1033 | u8 *buf = usb3_req->req.buf + usb3_req->req.actual; | |
1034 | u32 tmp = 0; | |
1035 | bool is_last; | |
1036 | ||
1037 | if (usb3_wait_pipe_status(usb3_ep, PX_STA_BUFSTS) < 0) | |
1038 | return -EBUSY; | |
1039 | ||
1040 | /* Update gadget driver parameter */ | |
1041 | usb3_req->req.actual += len; | |
1042 | ||
1043 | /* Write data to the register */ | |
1044 | if (len >= 4) { | |
1045 | iowrite32_rep(usb3->reg + fifo_reg, buf, len / 4); | |
1046 | buf += (len / 4) * 4; | |
1047 | len %= 4; /* update len to use usb3_set_pX_con_send() */ | |
1048 | } | |
1049 | ||
1050 | if (len) { | |
1051 | for (i = 0; i < len; i++) | |
1052 | tmp |= buf[i] << (8 * i); | |
1053 | usb3_write(usb3, tmp, fifo_reg); | |
1054 | } | |
1055 | ||
1056 | is_last = usb3_is_transfer_complete(usb3_ep, usb3_req); | |
1057 | /* Send the data */ | |
1058 | usb3_set_px_con_send(usb3_ep, len, is_last); | |
1059 | ||
1060 | return is_last ? 0 : -EAGAIN; | |
1061 | } | |
1062 | ||
1063 | static u32 usb3_get_received_length(struct renesas_usb3_ep *usb3_ep) | |
1064 | { | |
1065 | struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); | |
1066 | u32 lng_reg = usb3_ep->num ? USB3_PN_LNG : USB3_P0_LNG; | |
1067 | ||
1068 | return usb3_read(usb3, lng_reg); | |
1069 | } | |
1070 | ||
1071 | static int usb3_read_pipe(struct renesas_usb3_ep *usb3_ep, | |
1072 | struct renesas_usb3_request *usb3_req, u32 fifo_reg) | |
1073 | { | |
1074 | struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); | |
1075 | int i; | |
1076 | int len = min_t(unsigned, usb3_req->req.length - usb3_req->req.actual, | |
1077 | usb3_get_received_length(usb3_ep)); | |
1078 | u8 *buf = usb3_req->req.buf + usb3_req->req.actual; | |
1079 | u32 tmp = 0; | |
1080 | ||
1081 | if (!len) | |
1082 | return 0; | |
1083 | ||
1084 | /* Update gadget driver parameter */ | |
1085 | usb3_req->req.actual += len; | |
1086 | ||
1087 | /* Read data from the register */ | |
1088 | if (len >= 4) { | |
1089 | ioread32_rep(usb3->reg + fifo_reg, buf, len / 4); | |
1090 | buf += (len / 4) * 4; | |
1091 | len %= 4; | |
1092 | } | |
1093 | ||
1094 | if (len) { | |
1095 | tmp = usb3_read(usb3, fifo_reg); | |
1096 | for (i = 0; i < len; i++) | |
1097 | buf[i] = (tmp >> (8 * i)) & 0xff; | |
1098 | } | |
1099 | ||
1100 | return usb3_is_transfer_complete(usb3_ep, usb3_req) ? 0 : -EAGAIN; | |
1101 | } | |
1102 | ||
1103 | static void usb3_set_status_stage(struct renesas_usb3_ep *usb3_ep, | |
1104 | struct renesas_usb3_request *usb3_req) | |
1105 | { | |
1106 | struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); | |
1107 | ||
1108 | if (usb3_ep->dir_in) { | |
1109 | usb3_set_p0_con_for_ctrl_read_status(usb3); | |
1110 | } else { | |
1111 | if (!usb3_req->req.length) | |
1112 | usb3_set_p0_con_for_no_data(usb3); | |
1113 | else | |
1114 | usb3_set_p0_con_for_ctrl_write_status(usb3); | |
1115 | } | |
1116 | } | |
1117 | ||
1118 | static void usb3_p0_xfer(struct renesas_usb3_ep *usb3_ep, | |
1119 | struct renesas_usb3_request *usb3_req) | |
1120 | { | |
1121 | int ret = -EAGAIN; | |
1122 | ||
1123 | if (usb3_ep->dir_in) | |
1124 | ret = usb3_write_pipe(usb3_ep, usb3_req, USB3_P0_WRITE); | |
1125 | else | |
1126 | ret = usb3_read_pipe(usb3_ep, usb3_req, USB3_P0_READ); | |
1127 | ||
1128 | if (!ret) | |
1129 | usb3_set_status_stage(usb3_ep, usb3_req); | |
1130 | } | |
1131 | ||
1132 | static void usb3_start_pipe0(struct renesas_usb3_ep *usb3_ep, | |
1133 | struct renesas_usb3_request *usb3_req) | |
1134 | { | |
1135 | struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); | |
1136 | ||
1137 | if (usb3_ep->started) | |
1138 | return; | |
1139 | ||
1140 | usb3_ep->started = true; | |
1141 | ||
1142 | if (usb3_ep->dir_in) { | |
1143 | usb3_set_bit(usb3, P0_MOD_DIR, USB3_P0_MOD); | |
1144 | usb3_set_p0_con_for_ctrl_read_data(usb3); | |
1145 | } else { | |
1146 | usb3_clear_bit(usb3, P0_MOD_DIR, USB3_P0_MOD); | |
1147 | usb3_set_p0_con_for_ctrl_write_data(usb3); | |
1148 | } | |
1149 | ||
1150 | usb3_p0_xfer(usb3_ep, usb3_req); | |
1151 | } | |
1152 | ||
2d4aa21a YS |
1153 | static void usb3_enable_dma_pipen(struct renesas_usb3 *usb3) |
1154 | { | |
1155 | usb3_set_bit(usb3, PN_CON_DATAIF_EN, USB3_PN_CON); | |
1156 | } | |
1157 | ||
1158 | static void usb3_disable_dma_pipen(struct renesas_usb3 *usb3) | |
1159 | { | |
1160 | usb3_clear_bit(usb3, PN_CON_DATAIF_EN, USB3_PN_CON); | |
1161 | } | |
1162 | ||
1163 | static void usb3_enable_dma_irq(struct renesas_usb3 *usb3, int num) | |
1164 | { | |
1165 | usb3_set_bit(usb3, DMA_INT(num), USB3_DMA_INT_ENA); | |
1166 | } | |
1167 | ||
1168 | static void usb3_disable_dma_irq(struct renesas_usb3 *usb3, int num) | |
1169 | { | |
1170 | usb3_clear_bit(usb3, DMA_INT(num), USB3_DMA_INT_ENA); | |
1171 | } | |
1172 | ||
1173 | static u32 usb3_dma_mps_to_prd_word1(struct renesas_usb3_ep *usb3_ep) | |
1174 | { | |
1175 | switch (usb3_ep->ep.maxpacket) { | |
1176 | case 8: | |
1177 | return USB3_PRD1_MPS_8; | |
1178 | case 16: | |
1179 | return USB3_PRD1_MPS_16; | |
1180 | case 32: | |
1181 | return USB3_PRD1_MPS_32; | |
1182 | case 64: | |
1183 | return USB3_PRD1_MPS_64; | |
1184 | case 512: | |
1185 | return USB3_PRD1_MPS_512; | |
1186 | case 1024: | |
1187 | return USB3_PRD1_MPS_1024; | |
1188 | default: | |
1189 | return USB3_PRD1_MPS_RESERVED; | |
1190 | } | |
1191 | } | |
1192 | ||
1193 | static bool usb3_dma_get_setting_area(struct renesas_usb3_ep *usb3_ep, | |
1194 | struct renesas_usb3_request *usb3_req) | |
1195 | { | |
1196 | struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); | |
1197 | struct renesas_usb3_dma *dma; | |
1198 | int i; | |
1199 | bool ret = false; | |
1200 | ||
1201 | if (usb3_req->req.length > USB3_DMA_MAX_XFER_SIZE_ALL_PRDS) { | |
1202 | dev_dbg(usb3_to_dev(usb3), "%s: the length is too big (%d)\n", | |
1203 | __func__, usb3_req->req.length); | |
1204 | return false; | |
1205 | } | |
1206 | ||
1207 | /* The driver doesn't handle zero-length packet via dmac */ | |
1208 | if (!usb3_req->req.length) | |
1209 | return false; | |
1210 | ||
1211 | if (usb3_dma_mps_to_prd_word1(usb3_ep) == USB3_PRD1_MPS_RESERVED) | |
1212 | return false; | |
1213 | ||
1214 | usb3_for_each_dma(usb3, dma, i) { | |
1215 | if (dma->used) | |
1216 | continue; | |
1217 | ||
1218 | if (usb_gadget_map_request(&usb3->gadget, &usb3_req->req, | |
1219 | usb3_ep->dir_in) < 0) | |
1220 | break; | |
1221 | ||
1222 | dma->used = true; | |
1223 | usb3_ep->dma = dma; | |
1224 | ret = true; | |
1225 | break; | |
1226 | } | |
1227 | ||
1228 | return ret; | |
1229 | } | |
1230 | ||
1231 | static void usb3_dma_put_setting_area(struct renesas_usb3_ep *usb3_ep, | |
1232 | struct renesas_usb3_request *usb3_req) | |
1233 | { | |
1234 | struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); | |
1235 | int i; | |
1236 | struct renesas_usb3_dma *dma; | |
1237 | ||
1238 | usb3_for_each_dma(usb3, dma, i) { | |
1239 | if (usb3_ep->dma == dma) { | |
1240 | usb_gadget_unmap_request(&usb3->gadget, &usb3_req->req, | |
1241 | usb3_ep->dir_in); | |
1242 | dma->used = false; | |
1243 | usb3_ep->dma = NULL; | |
1244 | break; | |
1245 | } | |
1246 | } | |
1247 | } | |
1248 | ||
1249 | static void usb3_dma_fill_prd(struct renesas_usb3_ep *usb3_ep, | |
1250 | struct renesas_usb3_request *usb3_req) | |
1251 | { | |
1252 | struct renesas_usb3_prd *cur_prd = usb3_ep->dma->prd; | |
1253 | u32 remain = usb3_req->req.length; | |
1254 | u32 dma = usb3_req->req.dma; | |
1255 | u32 len; | |
1256 | int i = 0; | |
1257 | ||
1258 | do { | |
1259 | len = min_t(u32, remain, USB3_DMA_MAX_XFER_SIZE) & | |
1260 | USB3_PRD1_SIZE_MASK; | |
1261 | cur_prd->word1 = usb3_dma_mps_to_prd_word1(usb3_ep) | | |
1262 | USB3_PRD1_B_INC | len; | |
1263 | cur_prd->bap = dma; | |
1264 | remain -= len; | |
1265 | dma += len; | |
1266 | if (!remain || (i + 1) < USB3_DMA_NUM_PRD_ENTRIES) | |
1267 | break; | |
1268 | ||
1269 | cur_prd++; | |
1270 | i++; | |
1271 | } while (1); | |
1272 | ||
1273 | cur_prd->word1 |= USB3_PRD1_E | USB3_PRD1_INT; | |
1274 | if (usb3_ep->dir_in) | |
1275 | cur_prd->word1 |= USB3_PRD1_LST; | |
1276 | } | |
1277 | ||
1278 | static void usb3_dma_kick_prd(struct renesas_usb3_ep *usb3_ep) | |
1279 | { | |
1280 | struct renesas_usb3_dma *dma = usb3_ep->dma; | |
1281 | struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); | |
1282 | u32 dma_con = DMA_COM_PIPE_NO(usb3_ep->num) | DMA_CON_PRD_EN; | |
1283 | ||
1284 | if (usb3_ep->dir_in) | |
1285 | dma_con |= DMA_CON_PIPE_DIR; | |
1286 | ||
1287 | wmb(); /* prd entries should be in system memory here */ | |
1288 | ||
1289 | usb3_write(usb3, 1 << usb3_ep->num, USB3_DMA_INT_STA); | |
1290 | usb3_write(usb3, AXI_INT_PRDEN_CLR_STA(dma->num) | | |
1291 | AXI_INT_PRDERR_STA(dma->num), USB3_AXI_INT_STA); | |
1292 | ||
1293 | usb3_write(usb3, dma->prd_dma, USB3_DMA_CH0_PRD_ADR(dma->num)); | |
1294 | usb3_write(usb3, dma_con, USB3_DMA_CH0_CON(dma->num)); | |
1295 | usb3_enable_dma_irq(usb3, usb3_ep->num); | |
1296 | } | |
1297 | ||
1298 | static void usb3_dma_stop_prd(struct renesas_usb3_ep *usb3_ep) | |
1299 | { | |
1300 | struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); | |
1301 | struct renesas_usb3_dma *dma = usb3_ep->dma; | |
1302 | ||
1303 | usb3_disable_dma_irq(usb3, usb3_ep->num); | |
1304 | usb3_write(usb3, 0, USB3_DMA_CH0_CON(dma->num)); | |
1305 | } | |
1306 | ||
1307 | static int usb3_dma_update_status(struct renesas_usb3_ep *usb3_ep, | |
1308 | struct renesas_usb3_request *usb3_req) | |
1309 | { | |
1310 | struct renesas_usb3_prd *cur_prd = usb3_ep->dma->prd; | |
1311 | struct usb_request *req = &usb3_req->req; | |
1312 | u32 remain, len; | |
1313 | int i = 0; | |
1314 | int status = 0; | |
1315 | ||
1316 | rmb(); /* The controller updated prd entries */ | |
1317 | ||
1318 | do { | |
1319 | if (cur_prd->word1 & USB3_PRD1_D) | |
1320 | status = -EIO; | |
1321 | if (cur_prd->word1 & USB3_PRD1_E) | |
1322 | len = req->length % USB3_DMA_MAX_XFER_SIZE; | |
1323 | else | |
1324 | len = USB3_DMA_MAX_XFER_SIZE; | |
1325 | remain = cur_prd->word1 & USB3_PRD1_SIZE_MASK; | |
1326 | req->actual += len - remain; | |
1327 | ||
1328 | if (cur_prd->word1 & USB3_PRD1_E || | |
1329 | (i + 1) < USB3_DMA_NUM_PRD_ENTRIES) | |
1330 | break; | |
1331 | ||
1332 | cur_prd++; | |
1333 | i++; | |
1334 | } while (1); | |
1335 | ||
1336 | return status; | |
1337 | } | |
1338 | ||
1339 | static bool usb3_dma_try_start(struct renesas_usb3_ep *usb3_ep, | |
1340 | struct renesas_usb3_request *usb3_req) | |
1341 | { | |
1342 | struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); | |
1343 | ||
1344 | if (!use_dma) | |
1345 | return false; | |
1346 | ||
1347 | if (usb3_dma_get_setting_area(usb3_ep, usb3_req)) { | |
1348 | usb3_pn_stop(usb3); | |
1349 | usb3_enable_dma_pipen(usb3); | |
1350 | usb3_dma_fill_prd(usb3_ep, usb3_req); | |
1351 | usb3_dma_kick_prd(usb3_ep); | |
1352 | usb3_pn_start(usb3); | |
1353 | return true; | |
1354 | } | |
1355 | ||
1356 | return false; | |
1357 | } | |
1358 | ||
1359 | static int usb3_dma_try_stop(struct renesas_usb3_ep *usb3_ep, | |
1360 | struct renesas_usb3_request *usb3_req) | |
1361 | { | |
1362 | struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); | |
1363 | unsigned long flags; | |
1364 | int status = 0; | |
1365 | ||
1366 | spin_lock_irqsave(&usb3->lock, flags); | |
1367 | if (!usb3_ep->dma) | |
1368 | goto out; | |
1369 | ||
1370 | if (!usb3_pn_change(usb3, usb3_ep->num)) | |
1371 | usb3_disable_dma_pipen(usb3); | |
1372 | usb3_dma_stop_prd(usb3_ep); | |
1373 | status = usb3_dma_update_status(usb3_ep, usb3_req); | |
1374 | usb3_dma_put_setting_area(usb3_ep, usb3_req); | |
1375 | ||
1376 | out: | |
1377 | spin_unlock_irqrestore(&usb3->lock, flags); | |
1378 | return status; | |
1379 | } | |
1380 | ||
1381 | static int renesas_usb3_dma_free_prd(struct renesas_usb3 *usb3, | |
1382 | struct device *dev) | |
1383 | { | |
1384 | int i; | |
1385 | struct renesas_usb3_dma *dma; | |
1386 | ||
1387 | usb3_for_each_dma(usb3, dma, i) { | |
1388 | if (dma->prd) { | |
80584efc | 1389 | dma_free_coherent(dev, USB3_DMA_PRD_SIZE, |
2d4aa21a YS |
1390 | dma->prd, dma->prd_dma); |
1391 | dma->prd = NULL; | |
1392 | } | |
1393 | } | |
1394 | ||
1395 | return 0; | |
1396 | } | |
1397 | ||
1398 | static int renesas_usb3_dma_alloc_prd(struct renesas_usb3 *usb3, | |
1399 | struct device *dev) | |
1400 | { | |
1401 | int i; | |
1402 | struct renesas_usb3_dma *dma; | |
1403 | ||
1404 | if (!use_dma) | |
1405 | return 0; | |
1406 | ||
1407 | usb3_for_each_dma(usb3, dma, i) { | |
1408 | dma->prd = dma_alloc_coherent(dev, USB3_DMA_PRD_SIZE, | |
1409 | &dma->prd_dma, GFP_KERNEL); | |
1410 | if (!dma->prd) { | |
1411 | renesas_usb3_dma_free_prd(usb3, dev); | |
1412 | return -ENOMEM; | |
1413 | } | |
1414 | dma->num = i + 1; | |
1415 | } | |
1416 | ||
1417 | return 0; | |
1418 | } | |
1419 | ||
746bfe63 YS |
1420 | static void usb3_start_pipen(struct renesas_usb3_ep *usb3_ep, |
1421 | struct renesas_usb3_request *usb3_req) | |
1422 | { | |
1423 | struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); | |
1424 | struct renesas_usb3_request *usb3_req_first = usb3_get_request(usb3_ep); | |
1425 | unsigned long flags; | |
1426 | int ret = -EAGAIN; | |
1427 | u32 enable_bits = 0; | |
1428 | ||
781001ff | 1429 | spin_lock_irqsave(&usb3->lock, flags); |
746bfe63 | 1430 | if (usb3_ep->halt || usb3_ep->started) |
781001ff | 1431 | goto out; |
746bfe63 | 1432 | if (usb3_req != usb3_req_first) |
781001ff | 1433 | goto out; |
746bfe63 | 1434 | |
746bfe63 YS |
1435 | if (usb3_pn_change(usb3, usb3_ep->num) < 0) |
1436 | goto out; | |
1437 | ||
1438 | usb3_ep->started = true; | |
2d4aa21a YS |
1439 | |
1440 | if (usb3_dma_try_start(usb3_ep, usb3_req)) | |
1441 | goto out; | |
1442 | ||
746bfe63 YS |
1443 | usb3_pn_start(usb3); |
1444 | ||
1445 | if (usb3_ep->dir_in) { | |
1446 | ret = usb3_write_pipe(usb3_ep, usb3_req, USB3_PN_WRITE); | |
1447 | enable_bits |= PN_INT_LSTTR; | |
1448 | } | |
1449 | ||
1450 | if (ret < 0) | |
1451 | enable_bits |= PN_INT_BFRDY; | |
1452 | ||
1453 | if (enable_bits) { | |
1454 | usb3_set_bit(usb3, enable_bits, USB3_PN_INT_ENA); | |
1455 | usb3_enable_pipe_irq(usb3, usb3_ep->num); | |
1456 | } | |
1457 | out: | |
1458 | spin_unlock_irqrestore(&usb3->lock, flags); | |
1459 | } | |
1460 | ||
1461 | static int renesas_usb3_ep_queue(struct usb_ep *_ep, struct usb_request *_req, | |
1462 | gfp_t gfp_flags) | |
1463 | { | |
1464 | struct renesas_usb3_ep *usb3_ep = usb_ep_to_usb3_ep(_ep); | |
1465 | struct renesas_usb3_request *usb3_req = usb_req_to_usb3_req(_req); | |
1466 | struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); | |
1467 | unsigned long flags; | |
1468 | ||
1469 | dev_dbg(usb3_to_dev(usb3), "ep_queue: ep%2d, %u\n", usb3_ep->num, | |
1470 | _req->length); | |
1471 | ||
1472 | _req->status = -EINPROGRESS; | |
1473 | _req->actual = 0; | |
1474 | spin_lock_irqsave(&usb3->lock, flags); | |
1475 | list_add_tail(&usb3_req->queue, &usb3_ep->queue); | |
1476 | spin_unlock_irqrestore(&usb3->lock, flags); | |
1477 | ||
1478 | if (!usb3_ep->num) | |
1479 | usb3_start_pipe0(usb3_ep, usb3_req); | |
1480 | else | |
1481 | usb3_start_pipen(usb3_ep, usb3_req); | |
1482 | ||
1483 | return 0; | |
1484 | } | |
1485 | ||
1486 | static void usb3_set_device_address(struct renesas_usb3 *usb3, u16 addr) | |
1487 | { | |
1488 | /* DEV_ADDR bit field is cleared by WarmReset, HotReset and BusReset */ | |
1489 | usb3_set_bit(usb3, USB_COM_CON_DEV_ADDR(addr), USB3_USB_COM_CON); | |
1490 | } | |
1491 | ||
1492 | static bool usb3_std_req_set_address(struct renesas_usb3 *usb3, | |
1493 | struct usb_ctrlrequest *ctrl) | |
1494 | { | |
1495 | if (ctrl->wValue >= 128) | |
1496 | return true; /* stall */ | |
1497 | ||
1498 | usb3_set_device_address(usb3, ctrl->wValue); | |
1499 | usb3_set_p0_con_for_no_data(usb3); | |
1500 | ||
1501 | return false; | |
1502 | } | |
1503 | ||
1504 | static void usb3_pipe0_internal_xfer(struct renesas_usb3 *usb3, | |
1505 | void *tx_data, size_t len, | |
1506 | void (*complete)(struct usb_ep *ep, | |
1507 | struct usb_request *req)) | |
1508 | { | |
1509 | struct renesas_usb3_ep *usb3_ep = usb3_get_ep(usb3, 0); | |
1510 | ||
1511 | if (tx_data) | |
1512 | memcpy(usb3->ep0_buf, tx_data, | |
1513 | min_t(size_t, len, USB3_EP0_BUF_SIZE)); | |
1514 | ||
1515 | usb3->ep0_req->buf = &usb3->ep0_buf; | |
1516 | usb3->ep0_req->length = len; | |
1517 | usb3->ep0_req->complete = complete; | |
1518 | renesas_usb3_ep_queue(&usb3_ep->ep, usb3->ep0_req, GFP_ATOMIC); | |
1519 | } | |
1520 | ||
1521 | static void usb3_pipe0_get_status_completion(struct usb_ep *ep, | |
1522 | struct usb_request *req) | |
1523 | { | |
1524 | } | |
1525 | ||
1526 | static bool usb3_std_req_get_status(struct renesas_usb3 *usb3, | |
1527 | struct usb_ctrlrequest *ctrl) | |
1528 | { | |
1529 | bool stall = false; | |
1530 | struct renesas_usb3_ep *usb3_ep; | |
1531 | int num; | |
1532 | u16 status = 0; | |
1533 | ||
1534 | switch (ctrl->bRequestType & USB_RECIP_MASK) { | |
1535 | case USB_RECIP_DEVICE: | |
1536 | if (usb3->gadget.is_selfpowered) | |
1537 | status |= 1 << USB_DEVICE_SELF_POWERED; | |
1538 | if (usb3->gadget.speed == USB_SPEED_SUPER) | |
1539 | status |= usb3_feature_get_un_enabled(usb3); | |
1540 | break; | |
1541 | case USB_RECIP_INTERFACE: | |
1542 | break; | |
1543 | case USB_RECIP_ENDPOINT: | |
1544 | num = le16_to_cpu(ctrl->wIndex) & USB_ENDPOINT_NUMBER_MASK; | |
1545 | usb3_ep = usb3_get_ep(usb3, num); | |
1546 | if (usb3_ep->halt) | |
1547 | status |= 1 << USB_ENDPOINT_HALT; | |
1548 | break; | |
1549 | default: | |
1550 | stall = true; | |
1551 | break; | |
1552 | } | |
1553 | ||
1554 | if (!stall) { | |
1555 | status = cpu_to_le16(status); | |
1556 | dev_dbg(usb3_to_dev(usb3), "get_status: req = %p\n", | |
1557 | usb_req_to_usb3_req(usb3->ep0_req)); | |
1558 | usb3_pipe0_internal_xfer(usb3, &status, sizeof(status), | |
1559 | usb3_pipe0_get_status_completion); | |
1560 | } | |
1561 | ||
1562 | return stall; | |
1563 | } | |
1564 | ||
1565 | static bool usb3_std_req_feature_device(struct renesas_usb3 *usb3, | |
1566 | struct usb_ctrlrequest *ctrl, bool set) | |
1567 | { | |
1568 | bool stall = true; | |
1569 | u16 w_value = le16_to_cpu(ctrl->wValue); | |
1570 | ||
1571 | switch (w_value) { | |
1572 | case USB_DEVICE_TEST_MODE: | |
1573 | if (!set) | |
1574 | break; | |
1575 | usb3->test_mode = le16_to_cpu(ctrl->wIndex) >> 8; | |
1576 | stall = false; | |
1577 | break; | |
1578 | case USB_DEVICE_U1_ENABLE: | |
1579 | case USB_DEVICE_U2_ENABLE: | |
1580 | if (usb3->gadget.speed != USB_SPEED_SUPER) | |
1581 | break; | |
1582 | if (w_value == USB_DEVICE_U1_ENABLE) | |
1583 | usb3_feature_u1_enable(usb3, set); | |
1584 | if (w_value == USB_DEVICE_U2_ENABLE) | |
1585 | usb3_feature_u2_enable(usb3, set); | |
1586 | stall = false; | |
1587 | break; | |
1588 | default: | |
1589 | break; | |
1590 | } | |
1591 | ||
1592 | return stall; | |
1593 | } | |
1594 | ||
1595 | static int usb3_set_halt_p0(struct renesas_usb3_ep *usb3_ep, bool halt) | |
1596 | { | |
1597 | struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); | |
1598 | ||
1599 | if (unlikely(usb3_ep->num)) | |
1600 | return -EINVAL; | |
1601 | ||
1602 | usb3_ep->halt = halt; | |
1603 | if (halt) | |
1604 | usb3_set_p0_con_stall(usb3); | |
1605 | else | |
1606 | usb3_set_p0_con_stop(usb3); | |
1607 | ||
1608 | return 0; | |
1609 | } | |
1610 | ||
1611 | static int usb3_set_halt_pn(struct renesas_usb3_ep *usb3_ep, bool halt, | |
1612 | bool is_clear_feature) | |
1613 | { | |
1614 | struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); | |
1615 | unsigned long flags; | |
1616 | ||
1617 | spin_lock_irqsave(&usb3->lock, flags); | |
1618 | if (!usb3_pn_change(usb3, usb3_ep->num)) { | |
1619 | usb3_ep->halt = halt; | |
1620 | if (halt) { | |
1621 | usb3_pn_stall(usb3); | |
1622 | } else if (!is_clear_feature || !usb3_ep->wedge) { | |
1623 | usb3_pn_con_clear(usb3); | |
1624 | usb3_set_bit(usb3, PN_CON_EN, USB3_PN_CON); | |
1625 | usb3_pn_stop(usb3); | |
1626 | } | |
1627 | } | |
1628 | spin_unlock_irqrestore(&usb3->lock, flags); | |
1629 | ||
1630 | return 0; | |
1631 | } | |
1632 | ||
1633 | static int usb3_set_halt(struct renesas_usb3_ep *usb3_ep, bool halt, | |
1634 | bool is_clear_feature) | |
1635 | { | |
1636 | int ret = 0; | |
1637 | ||
1638 | if (halt && usb3_ep->started) | |
1639 | return -EAGAIN; | |
1640 | ||
1641 | if (usb3_ep->num) | |
1642 | ret = usb3_set_halt_pn(usb3_ep, halt, is_clear_feature); | |
1643 | else | |
1644 | ret = usb3_set_halt_p0(usb3_ep, halt); | |
1645 | ||
1646 | return ret; | |
1647 | } | |
1648 | ||
1649 | static bool usb3_std_req_feature_endpoint(struct renesas_usb3 *usb3, | |
1650 | struct usb_ctrlrequest *ctrl, | |
1651 | bool set) | |
1652 | { | |
1653 | int num = le16_to_cpu(ctrl->wIndex) & USB_ENDPOINT_NUMBER_MASK; | |
1654 | struct renesas_usb3_ep *usb3_ep; | |
1655 | struct renesas_usb3_request *usb3_req; | |
1656 | ||
1657 | if (le16_to_cpu(ctrl->wValue) != USB_ENDPOINT_HALT) | |
1658 | return true; /* stall */ | |
1659 | ||
1660 | usb3_ep = usb3_get_ep(usb3, num); | |
1661 | usb3_set_halt(usb3_ep, set, true); | |
1662 | ||
1663 | /* Restarts a queue if clear feature */ | |
1664 | if (!set) { | |
1665 | usb3_ep->started = false; | |
1666 | usb3_req = usb3_get_request(usb3_ep); | |
1667 | if (usb3_req) | |
1668 | usb3_start_pipen(usb3_ep, usb3_req); | |
1669 | } | |
1670 | ||
1671 | return false; | |
1672 | } | |
1673 | ||
1674 | static bool usb3_std_req_feature(struct renesas_usb3 *usb3, | |
1675 | struct usb_ctrlrequest *ctrl, bool set) | |
1676 | { | |
1677 | bool stall = false; | |
1678 | ||
1679 | switch (ctrl->bRequestType & USB_RECIP_MASK) { | |
1680 | case USB_RECIP_DEVICE: | |
1681 | stall = usb3_std_req_feature_device(usb3, ctrl, set); | |
1682 | break; | |
1683 | case USB_RECIP_INTERFACE: | |
1684 | break; | |
1685 | case USB_RECIP_ENDPOINT: | |
1686 | stall = usb3_std_req_feature_endpoint(usb3, ctrl, set); | |
1687 | break; | |
1688 | default: | |
1689 | stall = true; | |
1690 | break; | |
1691 | } | |
1692 | ||
1693 | if (!stall) | |
1694 | usb3_set_p0_con_for_no_data(usb3); | |
1695 | ||
1696 | return stall; | |
1697 | } | |
1698 | ||
1699 | static void usb3_pipe0_set_sel_completion(struct usb_ep *ep, | |
1700 | struct usb_request *req) | |
1701 | { | |
1702 | /* TODO */ | |
1703 | } | |
1704 | ||
1705 | static bool usb3_std_req_set_sel(struct renesas_usb3 *usb3, | |
1706 | struct usb_ctrlrequest *ctrl) | |
1707 | { | |
1708 | u16 w_length = le16_to_cpu(ctrl->wLength); | |
1709 | ||
1710 | if (w_length != 6) | |
1711 | return true; /* stall */ | |
1712 | ||
1713 | dev_dbg(usb3_to_dev(usb3), "set_sel: req = %p\n", | |
1714 | usb_req_to_usb3_req(usb3->ep0_req)); | |
1715 | usb3_pipe0_internal_xfer(usb3, NULL, 6, usb3_pipe0_set_sel_completion); | |
1716 | ||
1717 | return false; | |
1718 | } | |
1719 | ||
1720 | static bool usb3_std_req_set_configuration(struct renesas_usb3 *usb3, | |
1721 | struct usb_ctrlrequest *ctrl) | |
1722 | { | |
1723 | if (ctrl->wValue > 0) | |
1724 | usb3_set_bit(usb3, USB_COM_CON_CONF, USB3_USB_COM_CON); | |
1725 | else | |
1726 | usb3_clear_bit(usb3, USB_COM_CON_CONF, USB3_USB_COM_CON); | |
1727 | ||
1728 | return false; | |
1729 | } | |
1730 | ||
1731 | /** | |
1732 | * usb3_handle_standard_request - handle some standard requests | |
1733 | * @usb3: the renesas_usb3 pointer | |
1734 | * @ctrl: a pointer of setup data | |
1735 | * | |
1736 | * Returns true if this function handled a standard request | |
1737 | */ | |
1738 | static bool usb3_handle_standard_request(struct renesas_usb3 *usb3, | |
1739 | struct usb_ctrlrequest *ctrl) | |
1740 | { | |
1741 | bool ret = false; | |
1742 | bool stall = false; | |
1743 | ||
1744 | if ((ctrl->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) { | |
1745 | switch (ctrl->bRequest) { | |
1746 | case USB_REQ_SET_ADDRESS: | |
1747 | stall = usb3_std_req_set_address(usb3, ctrl); | |
1748 | ret = true; | |
1749 | break; | |
1750 | case USB_REQ_GET_STATUS: | |
1751 | stall = usb3_std_req_get_status(usb3, ctrl); | |
1752 | ret = true; | |
1753 | break; | |
1754 | case USB_REQ_CLEAR_FEATURE: | |
1755 | stall = usb3_std_req_feature(usb3, ctrl, false); | |
1756 | ret = true; | |
1757 | break; | |
1758 | case USB_REQ_SET_FEATURE: | |
1759 | stall = usb3_std_req_feature(usb3, ctrl, true); | |
1760 | ret = true; | |
1761 | break; | |
1762 | case USB_REQ_SET_SEL: | |
1763 | stall = usb3_std_req_set_sel(usb3, ctrl); | |
1764 | ret = true; | |
1765 | break; | |
1766 | case USB_REQ_SET_ISOCH_DELAY: | |
1767 | /* This hardware doesn't support Isochronous xfer */ | |
1768 | stall = true; | |
1769 | ret = true; | |
1770 | break; | |
1771 | case USB_REQ_SET_CONFIGURATION: | |
1772 | usb3_std_req_set_configuration(usb3, ctrl); | |
1773 | break; | |
1774 | default: | |
1775 | break; | |
1776 | } | |
1777 | } | |
1778 | ||
1779 | if (stall) | |
1780 | usb3_set_p0_con_stall(usb3); | |
1781 | ||
1782 | return ret; | |
1783 | } | |
1784 | ||
1785 | static int usb3_p0_con_clear_buffer(struct renesas_usb3 *usb3) | |
1786 | { | |
1787 | usb3_set_bit(usb3, P0_CON_BCLR, USB3_P0_CON); | |
1788 | ||
1789 | return usb3_wait(usb3, USB3_P0_CON, P0_CON_BCLR, 0); | |
1790 | } | |
1791 | ||
1792 | static void usb3_irq_epc_pipe0_setup(struct renesas_usb3 *usb3) | |
1793 | { | |
1794 | struct usb_ctrlrequest ctrl; | |
1795 | struct renesas_usb3_ep *usb3_ep = usb3_get_ep(usb3, 0); | |
1796 | ||
1797 | /* Call giveback function if previous transfer is not completed */ | |
1798 | if (usb3_ep->started) | |
1799 | usb3_request_done(usb3_ep, usb3_get_request(usb3_ep), | |
1800 | -ECONNRESET); | |
1801 | ||
1802 | usb3_p0_con_clear_buffer(usb3); | |
1803 | usb3_get_setup_data(usb3, &ctrl); | |
1804 | if (!usb3_handle_standard_request(usb3, &ctrl)) | |
1805 | if (usb3->driver->setup(&usb3->gadget, &ctrl) < 0) | |
1806 | usb3_set_p0_con_stall(usb3); | |
1807 | } | |
1808 | ||
1809 | static void usb3_irq_epc_pipe0_bfrdy(struct renesas_usb3 *usb3) | |
1810 | { | |
1811 | struct renesas_usb3_ep *usb3_ep = usb3_get_ep(usb3, 0); | |
1812 | struct renesas_usb3_request *usb3_req = usb3_get_request(usb3_ep); | |
1813 | ||
1814 | if (!usb3_req) | |
1815 | return; | |
1816 | ||
1817 | usb3_p0_xfer(usb3_ep, usb3_req); | |
1818 | } | |
1819 | ||
1820 | static void usb3_irq_epc_pipe0(struct renesas_usb3 *usb3) | |
1821 | { | |
1822 | u32 p0_int_sta = usb3_read(usb3, USB3_P0_INT_STA); | |
1823 | ||
1824 | p0_int_sta &= usb3_read(usb3, USB3_P0_INT_ENA); | |
1825 | usb3_write(usb3, p0_int_sta, USB3_P0_INT_STA); | |
1826 | if (p0_int_sta & P0_INT_STSED) | |
1827 | usb3_irq_epc_pipe0_status_end(usb3); | |
1828 | if (p0_int_sta & P0_INT_SETUP) | |
1829 | usb3_irq_epc_pipe0_setup(usb3); | |
1830 | if (p0_int_sta & P0_INT_BFRDY) | |
1831 | usb3_irq_epc_pipe0_bfrdy(usb3); | |
1832 | } | |
1833 | ||
1834 | static void usb3_request_done_pipen(struct renesas_usb3 *usb3, | |
1835 | struct renesas_usb3_ep *usb3_ep, | |
1836 | struct renesas_usb3_request *usb3_req, | |
1837 | int status) | |
1838 | { | |
940f538a YS |
1839 | unsigned long flags; |
1840 | ||
1841 | spin_lock_irqsave(&usb3->lock, flags); | |
1842 | if (usb3_pn_change(usb3, usb3_ep->num)) | |
1843 | usb3_pn_stop(usb3); | |
1844 | spin_unlock_irqrestore(&usb3->lock, flags); | |
1845 | ||
746bfe63 YS |
1846 | usb3_disable_pipe_irq(usb3, usb3_ep->num); |
1847 | usb3_request_done(usb3_ep, usb3_req, status); | |
1848 | ||
1849 | /* get next usb3_req */ | |
1850 | usb3_req = usb3_get_request(usb3_ep); | |
1851 | if (usb3_req) | |
1852 | usb3_start_pipen(usb3_ep, usb3_req); | |
1853 | } | |
1854 | ||
1855 | static void usb3_irq_epc_pipen_lsttr(struct renesas_usb3 *usb3, int num) | |
1856 | { | |
1857 | struct renesas_usb3_ep *usb3_ep = usb3_get_ep(usb3, num); | |
1858 | struct renesas_usb3_request *usb3_req = usb3_get_request(usb3_ep); | |
1859 | ||
1860 | if (!usb3_req) | |
1861 | return; | |
1862 | ||
1863 | if (usb3_ep->dir_in) { | |
1864 | dev_dbg(usb3_to_dev(usb3), "%s: len = %u, actual = %u\n", | |
1865 | __func__, usb3_req->req.length, usb3_req->req.actual); | |
1866 | usb3_request_done_pipen(usb3, usb3_ep, usb3_req, 0); | |
1867 | } | |
1868 | } | |
1869 | ||
1870 | static void usb3_irq_epc_pipen_bfrdy(struct renesas_usb3 *usb3, int num) | |
1871 | { | |
1872 | struct renesas_usb3_ep *usb3_ep = usb3_get_ep(usb3, num); | |
1873 | struct renesas_usb3_request *usb3_req = usb3_get_request(usb3_ep); | |
940f538a | 1874 | bool done = false; |
746bfe63 YS |
1875 | |
1876 | if (!usb3_req) | |
1877 | return; | |
1878 | ||
940f538a YS |
1879 | spin_lock(&usb3->lock); |
1880 | if (usb3_pn_change(usb3, num)) | |
1881 | goto out; | |
1882 | ||
746bfe63 YS |
1883 | if (usb3_ep->dir_in) { |
1884 | /* Do not stop the IN pipe here to detect LSTTR interrupt */ | |
1885 | if (!usb3_write_pipe(usb3_ep, usb3_req, USB3_PN_WRITE)) | |
1886 | usb3_clear_bit(usb3, PN_INT_BFRDY, USB3_PN_INT_ENA); | |
1887 | } else { | |
1888 | if (!usb3_read_pipe(usb3_ep, usb3_req, USB3_PN_READ)) | |
940f538a | 1889 | done = true; |
746bfe63 | 1890 | } |
940f538a YS |
1891 | |
1892 | out: | |
1893 | /* need to unlock because usb3_request_done_pipen() locks it */ | |
1894 | spin_unlock(&usb3->lock); | |
1895 | ||
1896 | if (done) | |
1897 | usb3_request_done_pipen(usb3, usb3_ep, usb3_req, 0); | |
746bfe63 YS |
1898 | } |
1899 | ||
1900 | static void usb3_irq_epc_pipen(struct renesas_usb3 *usb3, int num) | |
1901 | { | |
1902 | u32 pn_int_sta; | |
1903 | ||
940f538a YS |
1904 | spin_lock(&usb3->lock); |
1905 | if (usb3_pn_change(usb3, num) < 0) { | |
1906 | spin_unlock(&usb3->lock); | |
746bfe63 | 1907 | return; |
940f538a | 1908 | } |
746bfe63 YS |
1909 | |
1910 | pn_int_sta = usb3_read(usb3, USB3_PN_INT_STA); | |
1911 | pn_int_sta &= usb3_read(usb3, USB3_PN_INT_ENA); | |
1912 | usb3_write(usb3, pn_int_sta, USB3_PN_INT_STA); | |
940f538a | 1913 | spin_unlock(&usb3->lock); |
746bfe63 YS |
1914 | if (pn_int_sta & PN_INT_LSTTR) |
1915 | usb3_irq_epc_pipen_lsttr(usb3, num); | |
1916 | if (pn_int_sta & PN_INT_BFRDY) | |
1917 | usb3_irq_epc_pipen_bfrdy(usb3, num); | |
1918 | } | |
1919 | ||
1920 | static void usb3_irq_epc_int_2(struct renesas_usb3 *usb3, u32 int_sta_2) | |
1921 | { | |
1922 | int i; | |
1923 | ||
1924 | for (i = 0; i < usb3->num_usb3_eps; i++) { | |
1925 | if (int_sta_2 & USB_INT_2_PIPE(i)) { | |
1926 | if (!i) | |
1927 | usb3_irq_epc_pipe0(usb3); | |
1928 | else | |
1929 | usb3_irq_epc_pipen(usb3, i); | |
1930 | } | |
1931 | } | |
1932 | } | |
1933 | ||
77172a1f YS |
1934 | static void usb3_irq_idmon_change(struct renesas_usb3 *usb3) |
1935 | { | |
1936 | usb3_check_id(usb3); | |
1937 | } | |
1938 | ||
1939 | static void usb3_irq_otg_int(struct renesas_usb3 *usb3, u32 otg_int_sta) | |
1940 | { | |
1941 | if (otg_int_sta & USB_OTG_IDMON) | |
1942 | usb3_irq_idmon_change(usb3); | |
1943 | } | |
1944 | ||
746bfe63 YS |
1945 | static void usb3_irq_epc(struct renesas_usb3 *usb3) |
1946 | { | |
1947 | u32 int_sta_1 = usb3_read(usb3, USB3_USB_INT_STA_1); | |
1948 | u32 int_sta_2 = usb3_read(usb3, USB3_USB_INT_STA_2); | |
77172a1f | 1949 | u32 otg_int_sta = usb3_read(usb3, USB3_USB_OTG_INT_STA); |
746bfe63 YS |
1950 | |
1951 | int_sta_1 &= usb3_read(usb3, USB3_USB_INT_ENA_1); | |
1952 | if (int_sta_1) { | |
1953 | usb3_write(usb3, int_sta_1, USB3_USB_INT_STA_1); | |
1954 | usb3_irq_epc_int_1(usb3, int_sta_1); | |
1955 | } | |
1956 | ||
1957 | int_sta_2 &= usb3_read(usb3, USB3_USB_INT_ENA_2); | |
1958 | if (int_sta_2) | |
1959 | usb3_irq_epc_int_2(usb3, int_sta_2); | |
77172a1f YS |
1960 | |
1961 | otg_int_sta &= usb3_read(usb3, USB3_USB_OTG_INT_ENA); | |
1962 | if (otg_int_sta) { | |
1963 | usb3_write(usb3, otg_int_sta, USB3_USB_OTG_INT_STA); | |
1964 | usb3_irq_otg_int(usb3, otg_int_sta); | |
1965 | } | |
746bfe63 YS |
1966 | } |
1967 | ||
2d4aa21a YS |
1968 | static void usb3_irq_dma_int(struct renesas_usb3 *usb3, u32 dma_sta) |
1969 | { | |
1970 | struct renesas_usb3_ep *usb3_ep; | |
1971 | struct renesas_usb3_request *usb3_req; | |
1972 | int i, status; | |
1973 | ||
1974 | for (i = 0; i < usb3->num_usb3_eps; i++) { | |
1975 | if (!(dma_sta & DMA_INT(i))) | |
1976 | continue; | |
1977 | ||
1978 | usb3_ep = usb3_get_ep(usb3, i); | |
1979 | if (!(usb3_read(usb3, USB3_AXI_INT_STA) & | |
1980 | AXI_INT_PRDEN_CLR_STA(usb3_ep->dma->num))) | |
1981 | continue; | |
1982 | ||
1983 | usb3_req = usb3_get_request(usb3_ep); | |
1984 | status = usb3_dma_try_stop(usb3_ep, usb3_req); | |
1985 | usb3_request_done_pipen(usb3, usb3_ep, usb3_req, status); | |
1986 | } | |
1987 | } | |
1988 | ||
1989 | static void usb3_irq_dma(struct renesas_usb3 *usb3) | |
1990 | { | |
1991 | u32 dma_sta = usb3_read(usb3, USB3_DMA_INT_STA); | |
1992 | ||
1993 | dma_sta &= usb3_read(usb3, USB3_DMA_INT_ENA); | |
1994 | if (dma_sta) { | |
1995 | usb3_write(usb3, dma_sta, USB3_DMA_INT_STA); | |
1996 | usb3_irq_dma_int(usb3, dma_sta); | |
1997 | } | |
1998 | } | |
1999 | ||
746bfe63 YS |
2000 | static irqreturn_t renesas_usb3_irq(int irq, void *_usb3) |
2001 | { | |
2002 | struct renesas_usb3 *usb3 = _usb3; | |
2003 | irqreturn_t ret = IRQ_NONE; | |
2004 | u32 axi_int_sta = usb3_read(usb3, USB3_AXI_INT_STA); | |
2005 | ||
2d4aa21a YS |
2006 | if (axi_int_sta & AXI_INT_DMAINT) { |
2007 | usb3_irq_dma(usb3); | |
2008 | ret = IRQ_HANDLED; | |
2009 | } | |
2010 | ||
746bfe63 YS |
2011 | if (axi_int_sta & AXI_INT_EPCINT) { |
2012 | usb3_irq_epc(usb3); | |
2013 | ret = IRQ_HANDLED; | |
2014 | } | |
2015 | ||
2016 | return ret; | |
2017 | } | |
2018 | ||
2019 | static void usb3_write_pn_mod(struct renesas_usb3_ep *usb3_ep, | |
2020 | const struct usb_endpoint_descriptor *desc) | |
2021 | { | |
2022 | struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); | |
2023 | u32 val = 0; | |
2024 | ||
2025 | val |= usb3_ep->dir_in ? PN_MOD_DIR : 0; | |
2026 | val |= PN_MOD_TYPE(usb_endpoint_type(desc)); | |
2027 | val |= PN_MOD_EPNUM(usb_endpoint_num(desc)); | |
2028 | usb3_write(usb3, val, USB3_PN_MOD); | |
2029 | } | |
2030 | ||
2031 | static u32 usb3_calc_ramarea(int ram_size) | |
2032 | { | |
2033 | WARN_ON(ram_size > SZ_16K); | |
2034 | ||
2035 | if (ram_size <= SZ_1K) | |
2036 | return PN_RAMMAP_RAMAREA_1KB; | |
2037 | else if (ram_size <= SZ_2K) | |
2038 | return PN_RAMMAP_RAMAREA_2KB; | |
2039 | else if (ram_size <= SZ_4K) | |
2040 | return PN_RAMMAP_RAMAREA_4KB; | |
2041 | else if (ram_size <= SZ_8K) | |
2042 | return PN_RAMMAP_RAMAREA_8KB; | |
2043 | else | |
2044 | return PN_RAMMAP_RAMAREA_16KB; | |
2045 | } | |
2046 | ||
2047 | static u32 usb3_calc_rammap_val(struct renesas_usb3_ep *usb3_ep, | |
2048 | const struct usb_endpoint_descriptor *desc) | |
2049 | { | |
2050 | return usb3_ep->rammap_val | PN_RAMMAP_MPKT(usb_endpoint_maxp(desc)); | |
2051 | } | |
2052 | ||
2053 | static int usb3_enable_pipe_n(struct renesas_usb3_ep *usb3_ep, | |
2054 | const struct usb_endpoint_descriptor *desc) | |
2055 | { | |
2056 | struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); | |
2057 | unsigned long flags; | |
2058 | ||
2059 | usb3_ep->dir_in = usb_endpoint_dir_in(desc); | |
2060 | ||
2061 | spin_lock_irqsave(&usb3->lock, flags); | |
2062 | if (!usb3_pn_change(usb3, usb3_ep->num)) { | |
2063 | usb3_write_pn_mod(usb3_ep, desc); | |
2064 | usb3_write(usb3, usb3_calc_rammap_val(usb3_ep, desc), | |
2065 | USB3_PN_RAMMAP); | |
2066 | usb3_pn_con_clear(usb3); | |
2067 | usb3_set_bit(usb3, PN_CON_EN, USB3_PN_CON); | |
2068 | } | |
2069 | spin_unlock_irqrestore(&usb3->lock, flags); | |
2070 | ||
2071 | return 0; | |
2072 | } | |
2073 | ||
2074 | static int usb3_disable_pipe_n(struct renesas_usb3_ep *usb3_ep) | |
2075 | { | |
2076 | struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); | |
2077 | unsigned long flags; | |
2078 | ||
2079 | usb3_ep->halt = false; | |
2080 | ||
2081 | spin_lock_irqsave(&usb3->lock, flags); | |
2082 | if (!usb3_pn_change(usb3, usb3_ep->num)) { | |
afbbc791 | 2083 | usb3_write(usb3, 0, USB3_PN_INT_ENA); |
746bfe63 YS |
2084 | usb3_write(usb3, 0, USB3_PN_RAMMAP); |
2085 | usb3_clear_bit(usb3, PN_CON_EN, USB3_PN_CON); | |
2086 | } | |
2087 | spin_unlock_irqrestore(&usb3->lock, flags); | |
2088 | ||
2089 | return 0; | |
2090 | } | |
2091 | ||
2092 | /*------- usb_ep_ops -----------------------------------------------------*/ | |
2093 | static int renesas_usb3_ep_enable(struct usb_ep *_ep, | |
2094 | const struct usb_endpoint_descriptor *desc) | |
2095 | { | |
2096 | struct renesas_usb3_ep *usb3_ep = usb_ep_to_usb3_ep(_ep); | |
2097 | ||
2098 | return usb3_enable_pipe_n(usb3_ep, desc); | |
2099 | } | |
2100 | ||
2101 | static int renesas_usb3_ep_disable(struct usb_ep *_ep) | |
2102 | { | |
2103 | struct renesas_usb3_ep *usb3_ep = usb_ep_to_usb3_ep(_ep); | |
2104 | struct renesas_usb3_request *usb3_req; | |
2105 | ||
2106 | do { | |
2107 | usb3_req = usb3_get_request(usb3_ep); | |
2108 | if (!usb3_req) | |
2109 | break; | |
2d4aa21a | 2110 | usb3_dma_try_stop(usb3_ep, usb3_req); |
746bfe63 YS |
2111 | usb3_request_done(usb3_ep, usb3_req, -ESHUTDOWN); |
2112 | } while (1); | |
2113 | ||
2114 | return usb3_disable_pipe_n(usb3_ep); | |
2115 | } | |
2116 | ||
2117 | static struct usb_request *__renesas_usb3_ep_alloc_request(gfp_t gfp_flags) | |
2118 | { | |
2119 | struct renesas_usb3_request *usb3_req; | |
2120 | ||
2121 | usb3_req = kzalloc(sizeof(struct renesas_usb3_request), gfp_flags); | |
2122 | if (!usb3_req) | |
2123 | return NULL; | |
2124 | ||
2125 | INIT_LIST_HEAD(&usb3_req->queue); | |
2126 | ||
2127 | return &usb3_req->req; | |
2128 | } | |
2129 | ||
2130 | static void __renesas_usb3_ep_free_request(struct usb_request *_req) | |
2131 | { | |
2132 | struct renesas_usb3_request *usb3_req = usb_req_to_usb3_req(_req); | |
2133 | ||
2134 | kfree(usb3_req); | |
2135 | } | |
2136 | ||
2137 | static struct usb_request *renesas_usb3_ep_alloc_request(struct usb_ep *_ep, | |
2138 | gfp_t gfp_flags) | |
2139 | { | |
2140 | return __renesas_usb3_ep_alloc_request(gfp_flags); | |
2141 | } | |
2142 | ||
2143 | static void renesas_usb3_ep_free_request(struct usb_ep *_ep, | |
2144 | struct usb_request *_req) | |
2145 | { | |
2146 | __renesas_usb3_ep_free_request(_req); | |
2147 | } | |
2148 | ||
2149 | static int renesas_usb3_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req) | |
2150 | { | |
2151 | struct renesas_usb3_ep *usb3_ep = usb_ep_to_usb3_ep(_ep); | |
2152 | struct renesas_usb3_request *usb3_req = usb_req_to_usb3_req(_req); | |
2153 | struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); | |
2154 | ||
2155 | dev_dbg(usb3_to_dev(usb3), "ep_dequeue: ep%2d, %u\n", usb3_ep->num, | |
2156 | _req->length); | |
2157 | ||
2d4aa21a | 2158 | usb3_dma_try_stop(usb3_ep, usb3_req); |
746bfe63 YS |
2159 | usb3_request_done_pipen(usb3, usb3_ep, usb3_req, -ECONNRESET); |
2160 | ||
2161 | return 0; | |
2162 | } | |
2163 | ||
2164 | static int renesas_usb3_ep_set_halt(struct usb_ep *_ep, int value) | |
2165 | { | |
2166 | return usb3_set_halt(usb_ep_to_usb3_ep(_ep), !!value, false); | |
2167 | } | |
2168 | ||
2169 | static int renesas_usb3_ep_set_wedge(struct usb_ep *_ep) | |
2170 | { | |
2171 | struct renesas_usb3_ep *usb3_ep = usb_ep_to_usb3_ep(_ep); | |
2172 | ||
2173 | usb3_ep->wedge = true; | |
2174 | return usb3_set_halt(usb3_ep, true, false); | |
2175 | } | |
2176 | ||
2177 | static void renesas_usb3_ep_fifo_flush(struct usb_ep *_ep) | |
2178 | { | |
2179 | struct renesas_usb3_ep *usb3_ep = usb_ep_to_usb3_ep(_ep); | |
2180 | struct renesas_usb3 *usb3 = usb3_ep_to_usb3(usb3_ep); | |
2181 | unsigned long flags; | |
2182 | ||
2183 | if (usb3_ep->num) { | |
2184 | spin_lock_irqsave(&usb3->lock, flags); | |
2185 | if (!usb3_pn_change(usb3, usb3_ep->num)) { | |
2186 | usb3_pn_con_clear(usb3); | |
2187 | usb3_set_bit(usb3, PN_CON_EN, USB3_PN_CON); | |
2188 | } | |
2189 | spin_unlock_irqrestore(&usb3->lock, flags); | |
2190 | } else { | |
2191 | usb3_p0_con_clear_buffer(usb3); | |
2192 | } | |
2193 | } | |
2194 | ||
2195 | static struct usb_ep_ops renesas_usb3_ep_ops = { | |
2196 | .enable = renesas_usb3_ep_enable, | |
2197 | .disable = renesas_usb3_ep_disable, | |
2198 | ||
2199 | .alloc_request = renesas_usb3_ep_alloc_request, | |
2200 | .free_request = renesas_usb3_ep_free_request, | |
2201 | ||
2202 | .queue = renesas_usb3_ep_queue, | |
2203 | .dequeue = renesas_usb3_ep_dequeue, | |
2204 | ||
2205 | .set_halt = renesas_usb3_ep_set_halt, | |
2206 | .set_wedge = renesas_usb3_ep_set_wedge, | |
2207 | .fifo_flush = renesas_usb3_ep_fifo_flush, | |
2208 | }; | |
2209 | ||
2210 | /*------- usb_gadget_ops -------------------------------------------------*/ | |
2211 | static int renesas_usb3_start(struct usb_gadget *gadget, | |
2212 | struct usb_gadget_driver *driver) | |
2213 | { | |
2214 | struct renesas_usb3 *usb3; | |
2215 | ||
2216 | if (!driver || driver->max_speed < USB_SPEED_FULL || | |
2217 | !driver->setup) | |
2218 | return -EINVAL; | |
2219 | ||
2220 | usb3 = gadget_to_renesas_usb3(gadget); | |
2221 | ||
2222 | /* hook up the driver */ | |
2223 | usb3->driver = driver; | |
2224 | ||
cdc87687 YS |
2225 | pm_runtime_enable(usb3_to_dev(usb3)); |
2226 | pm_runtime_get_sync(usb3_to_dev(usb3)); | |
2227 | ||
746bfe63 YS |
2228 | renesas_usb3_init_controller(usb3); |
2229 | ||
2230 | return 0; | |
2231 | } | |
2232 | ||
2233 | static int renesas_usb3_stop(struct usb_gadget *gadget) | |
2234 | { | |
2235 | struct renesas_usb3 *usb3 = gadget_to_renesas_usb3(gadget); | |
746bfe63 | 2236 | |
746bfe63 YS |
2237 | usb3->softconnect = false; |
2238 | usb3->gadget.speed = USB_SPEED_UNKNOWN; | |
2239 | usb3->driver = NULL; | |
2240 | renesas_usb3_stop_controller(usb3); | |
746bfe63 | 2241 | |
cdc87687 YS |
2242 | pm_runtime_put(usb3_to_dev(usb3)); |
2243 | pm_runtime_disable(usb3_to_dev(usb3)); | |
2244 | ||
746bfe63 YS |
2245 | return 0; |
2246 | } | |
2247 | ||
2248 | static int renesas_usb3_get_frame(struct usb_gadget *_gadget) | |
2249 | { | |
2250 | return -EOPNOTSUPP; | |
2251 | } | |
2252 | ||
2253 | static int renesas_usb3_pullup(struct usb_gadget *gadget, int is_on) | |
2254 | { | |
2255 | struct renesas_usb3 *usb3 = gadget_to_renesas_usb3(gadget); | |
2256 | ||
2257 | usb3->softconnect = !!is_on; | |
2258 | ||
2259 | return 0; | |
2260 | } | |
2261 | ||
2262 | static int renesas_usb3_set_selfpowered(struct usb_gadget *gadget, int is_self) | |
2263 | { | |
2264 | gadget->is_selfpowered = !!is_self; | |
2265 | ||
2266 | return 0; | |
2267 | } | |
2268 | ||
2269 | static const struct usb_gadget_ops renesas_usb3_gadget_ops = { | |
2270 | .get_frame = renesas_usb3_get_frame, | |
2271 | .udc_start = renesas_usb3_start, | |
2272 | .udc_stop = renesas_usb3_stop, | |
2273 | .pullup = renesas_usb3_pullup, | |
2274 | .set_selfpowered = renesas_usb3_set_selfpowered, | |
2275 | }; | |
2276 | ||
cc995c9e YS |
2277 | static ssize_t role_store(struct device *dev, struct device_attribute *attr, |
2278 | const char *buf, size_t count) | |
2279 | { | |
2280 | struct renesas_usb3 *usb3 = dev_get_drvdata(dev); | |
2281 | bool new_mode_is_host; | |
2282 | ||
2283 | if (!usb3->driver) | |
2284 | return -ENODEV; | |
2285 | ||
2286 | if (!strncmp(buf, "host", strlen("host"))) | |
2287 | new_mode_is_host = true; | |
2288 | else if (!strncmp(buf, "peripheral", strlen("peripheral"))) | |
2289 | new_mode_is_host = false; | |
2290 | else | |
2291 | return -EINVAL; | |
2292 | ||
2293 | if (new_mode_is_host == usb3_is_host(usb3)) | |
2294 | return -EINVAL; | |
2295 | ||
2296 | usb3_mode_config(usb3, new_mode_is_host, usb3_is_a_device(usb3)); | |
2297 | ||
2298 | return count; | |
2299 | } | |
2300 | ||
2301 | static ssize_t role_show(struct device *dev, struct device_attribute *attr, | |
2302 | char *buf) | |
2303 | { | |
2304 | struct renesas_usb3 *usb3 = dev_get_drvdata(dev); | |
2305 | ||
2306 | if (!usb3->driver) | |
2307 | return -ENODEV; | |
2308 | ||
2309 | return sprintf(buf, "%s\n", usb3_is_host(usb3) ? "host" : "peripheral"); | |
2310 | } | |
2311 | static DEVICE_ATTR_RW(role); | |
2312 | ||
746bfe63 YS |
2313 | /*------- platform_driver ------------------------------------------------*/ |
2314 | static int renesas_usb3_remove(struct platform_device *pdev) | |
2315 | { | |
2316 | struct renesas_usb3 *usb3 = platform_get_drvdata(pdev); | |
2317 | ||
cc995c9e YS |
2318 | device_remove_file(&pdev->dev, &dev_attr_role); |
2319 | ||
746bfe63 | 2320 | usb_del_gadget_udc(&usb3->gadget); |
2d4aa21a | 2321 | renesas_usb3_dma_free_prd(usb3, &pdev->dev); |
746bfe63 YS |
2322 | |
2323 | __renesas_usb3_ep_free_request(usb3->ep0_req); | |
2324 | ||
2325 | return 0; | |
2326 | } | |
2327 | ||
2328 | static int renesas_usb3_init_ep(struct renesas_usb3 *usb3, struct device *dev, | |
2329 | const struct renesas_usb3_priv *priv) | |
2330 | { | |
2331 | struct renesas_usb3_ep *usb3_ep; | |
2332 | int i; | |
2333 | ||
2334 | /* calculate num_usb3_eps from renesas_usb3_priv */ | |
2335 | usb3->num_usb3_eps = priv->ramsize_per_ramif * priv->num_ramif * 2 / | |
2336 | priv->ramsize_per_pipe + 1; | |
2337 | ||
2338 | if (usb3->num_usb3_eps > USB3_MAX_NUM_PIPES) | |
2339 | usb3->num_usb3_eps = USB3_MAX_NUM_PIPES; | |
2340 | ||
2341 | usb3->usb3_ep = devm_kzalloc(dev, sizeof(*usb3_ep) * usb3->num_usb3_eps, | |
2342 | GFP_KERNEL); | |
2343 | if (!usb3->usb3_ep) | |
2344 | return -ENOMEM; | |
2345 | ||
2346 | dev_dbg(dev, "%s: num_usb3_eps = %d\n", __func__, usb3->num_usb3_eps); | |
2347 | /* | |
4091fb95 | 2348 | * This driver prepares pipes as follows: |
746bfe63 YS |
2349 | * - odd pipes = IN pipe |
2350 | * - even pipes = OUT pipe (except pipe 0) | |
2351 | */ | |
2352 | usb3_for_each_ep(usb3_ep, usb3, i) { | |
2353 | snprintf(usb3_ep->ep_name, sizeof(usb3_ep->ep_name), "ep%d", i); | |
2354 | usb3_ep->usb3 = usb3; | |
2355 | usb3_ep->num = i; | |
2356 | usb3_ep->ep.name = usb3_ep->ep_name; | |
2357 | usb3_ep->ep.ops = &renesas_usb3_ep_ops; | |
2358 | INIT_LIST_HEAD(&usb3_ep->queue); | |
2359 | INIT_LIST_HEAD(&usb3_ep->ep.ep_list); | |
2360 | if (!i) { | |
2361 | /* for control pipe */ | |
2362 | usb3->gadget.ep0 = &usb3_ep->ep; | |
2363 | usb_ep_set_maxpacket_limit(&usb3_ep->ep, | |
2364 | USB3_EP0_HSFS_MAX_PACKET_SIZE); | |
2365 | usb3_ep->ep.caps.type_control = true; | |
2366 | usb3_ep->ep.caps.dir_in = true; | |
2367 | usb3_ep->ep.caps.dir_out = true; | |
2368 | continue; | |
2369 | } | |
2370 | ||
2371 | /* for bulk or interrupt pipe */ | |
2372 | usb_ep_set_maxpacket_limit(&usb3_ep->ep, ~0); | |
2373 | list_add_tail(&usb3_ep->ep.ep_list, &usb3->gadget.ep_list); | |
2374 | usb3_ep->ep.caps.type_bulk = true; | |
2375 | usb3_ep->ep.caps.type_int = true; | |
2376 | if (i & 1) | |
2377 | usb3_ep->ep.caps.dir_in = true; | |
2378 | else | |
2379 | usb3_ep->ep.caps.dir_out = true; | |
2380 | } | |
2381 | ||
2382 | return 0; | |
2383 | } | |
2384 | ||
2385 | static void renesas_usb3_init_ram(struct renesas_usb3 *usb3, struct device *dev, | |
2386 | const struct renesas_usb3_priv *priv) | |
2387 | { | |
2388 | struct renesas_usb3_ep *usb3_ep; | |
2389 | int i; | |
2390 | u32 ramif[2], basead[2]; /* index 0 = for IN pipes */ | |
2391 | u32 *cur_ramif, *cur_basead; | |
2392 | u32 val; | |
2393 | ||
2394 | memset(ramif, 0, sizeof(ramif)); | |
2395 | memset(basead, 0, sizeof(basead)); | |
2396 | ||
2397 | /* | |
4091fb95 | 2398 | * This driver prepares pipes as follows: |
746bfe63 YS |
2399 | * - all pipes = the same size as "ramsize_per_pipe" |
2400 | * Please refer to the "Method of Specifying RAM Mapping" | |
2401 | */ | |
2402 | usb3_for_each_ep(usb3_ep, usb3, i) { | |
2403 | if (!i) | |
2404 | continue; /* out of scope if ep num = 0 */ | |
2405 | if (usb3_ep->ep.caps.dir_in) { | |
2406 | cur_ramif = &ramif[0]; | |
2407 | cur_basead = &basead[0]; | |
2408 | } else { | |
2409 | cur_ramif = &ramif[1]; | |
2410 | cur_basead = &basead[1]; | |
2411 | } | |
2412 | ||
2413 | if (*cur_basead > priv->ramsize_per_ramif) | |
2414 | continue; /* out of memory for IN or OUT pipe */ | |
2415 | ||
2416 | /* calculate rammap_val */ | |
2417 | val = PN_RAMMAP_RAMIF(*cur_ramif); | |
2418 | val |= usb3_calc_ramarea(priv->ramsize_per_pipe); | |
2419 | val |= PN_RAMMAP_BASEAD(*cur_basead); | |
2420 | usb3_ep->rammap_val = val; | |
2421 | ||
2422 | dev_dbg(dev, "ep%2d: val = %08x, ramif = %d, base = %x\n", | |
2423 | i, val, *cur_ramif, *cur_basead); | |
2424 | ||
2425 | /* update current ramif */ | |
2426 | if (*cur_ramif + 1 == priv->num_ramif) { | |
2427 | *cur_ramif = 0; | |
2428 | *cur_basead += priv->ramsize_per_pipe; | |
2429 | } else { | |
2430 | (*cur_ramif)++; | |
2431 | } | |
2432 | } | |
2433 | } | |
2434 | ||
2435 | static const struct renesas_usb3_priv renesas_usb3_priv_r8a7795 = { | |
2436 | .ramsize_per_ramif = SZ_16K, | |
2437 | .num_ramif = 2, | |
2438 | .ramsize_per_pipe = SZ_4K, | |
2439 | .workaround_for_vbus = true, | |
2440 | }; | |
2441 | ||
2442 | static const struct of_device_id usb3_of_match[] = { | |
2443 | { | |
2444 | .compatible = "renesas,r8a7795-usb3-peri", | |
2445 | .data = &renesas_usb3_priv_r8a7795, | |
2446 | }, | |
2447 | { }, | |
2448 | }; | |
2449 | MODULE_DEVICE_TABLE(of, usb3_of_match); | |
2450 | ||
3b68e7ca YS |
2451 | static const unsigned int renesas_usb3_cable[] = { |
2452 | EXTCON_USB, | |
2453 | EXTCON_USB_HOST, | |
2454 | EXTCON_NONE, | |
2455 | }; | |
2456 | ||
746bfe63 YS |
2457 | static int renesas_usb3_probe(struct platform_device *pdev) |
2458 | { | |
2459 | struct renesas_usb3 *usb3; | |
2460 | struct resource *res; | |
2461 | const struct of_device_id *match; | |
2462 | int irq, ret; | |
2463 | const struct renesas_usb3_priv *priv; | |
2464 | ||
2465 | match = of_match_node(usb3_of_match, pdev->dev.of_node); | |
2466 | if (!match) | |
2467 | return -ENODEV; | |
2468 | priv = match->data; | |
2469 | ||
2470 | irq = platform_get_irq(pdev, 0); | |
2471 | if (irq < 0) | |
2472 | return -ENODEV; | |
2473 | ||
2474 | usb3 = devm_kzalloc(&pdev->dev, sizeof(*usb3), GFP_KERNEL); | |
2475 | if (!usb3) | |
2476 | return -ENOMEM; | |
2477 | ||
2478 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
2479 | usb3->reg = devm_ioremap_resource(&pdev->dev, res); | |
2480 | if (IS_ERR(usb3->reg)) | |
2481 | return PTR_ERR(usb3->reg); | |
2482 | ||
2483 | platform_set_drvdata(pdev, usb3); | |
2484 | spin_lock_init(&usb3->lock); | |
2485 | ||
2486 | usb3->gadget.ops = &renesas_usb3_gadget_ops; | |
2487 | usb3->gadget.name = udc_name; | |
2488 | usb3->gadget.max_speed = USB_SPEED_SUPER; | |
2489 | INIT_LIST_HEAD(&usb3->gadget.ep_list); | |
2490 | ret = renesas_usb3_init_ep(usb3, &pdev->dev, priv); | |
2491 | if (ret < 0) | |
2492 | return ret; | |
2493 | renesas_usb3_init_ram(usb3, &pdev->dev, priv); | |
2494 | ||
2495 | ret = devm_request_irq(&pdev->dev, irq, renesas_usb3_irq, 0, | |
2496 | dev_name(&pdev->dev), usb3); | |
2497 | if (ret < 0) | |
2498 | return ret; | |
2499 | ||
3b68e7ca YS |
2500 | INIT_WORK(&usb3->extcon_work, renesas_usb3_extcon_work); |
2501 | usb3->extcon = devm_extcon_dev_allocate(&pdev->dev, renesas_usb3_cable); | |
2502 | if (IS_ERR(usb3->extcon)) | |
2503 | return PTR_ERR(usb3->extcon); | |
2504 | ||
2505 | ret = devm_extcon_dev_register(&pdev->dev, usb3->extcon); | |
2506 | if (ret < 0) { | |
2507 | dev_err(&pdev->dev, "Failed to register extcon\n"); | |
2508 | return ret; | |
2509 | } | |
2510 | ||
746bfe63 YS |
2511 | /* for ep0 handling */ |
2512 | usb3->ep0_req = __renesas_usb3_ep_alloc_request(GFP_KERNEL); | |
2513 | if (!usb3->ep0_req) | |
2514 | return -ENOMEM; | |
2515 | ||
2d4aa21a YS |
2516 | ret = renesas_usb3_dma_alloc_prd(usb3, &pdev->dev); |
2517 | if (ret < 0) | |
2518 | goto err_alloc_prd; | |
2519 | ||
746bfe63 YS |
2520 | ret = usb_add_gadget_udc(&pdev->dev, &usb3->gadget); |
2521 | if (ret < 0) | |
2522 | goto err_add_udc; | |
2523 | ||
cc995c9e YS |
2524 | ret = device_create_file(&pdev->dev, &dev_attr_role); |
2525 | if (ret < 0) | |
2526 | goto err_dev_create; | |
2527 | ||
746bfe63 YS |
2528 | usb3->workaround_for_vbus = priv->workaround_for_vbus; |
2529 | ||
746bfe63 YS |
2530 | dev_info(&pdev->dev, "probed\n"); |
2531 | ||
2532 | return 0; | |
2533 | ||
cc995c9e YS |
2534 | err_dev_create: |
2535 | usb_del_gadget_udc(&usb3->gadget); | |
2536 | ||
746bfe63 | 2537 | err_add_udc: |
2d4aa21a YS |
2538 | renesas_usb3_dma_free_prd(usb3, &pdev->dev); |
2539 | ||
2540 | err_alloc_prd: | |
746bfe63 YS |
2541 | __renesas_usb3_ep_free_request(usb3->ep0_req); |
2542 | ||
2543 | return ret; | |
2544 | } | |
2545 | ||
2546 | static struct platform_driver renesas_usb3_driver = { | |
2547 | .probe = renesas_usb3_probe, | |
2548 | .remove = renesas_usb3_remove, | |
2549 | .driver = { | |
2550 | .name = (char *)udc_name, | |
2551 | .of_match_table = of_match_ptr(usb3_of_match), | |
2552 | }, | |
2553 | }; | |
2554 | module_platform_driver(renesas_usb3_driver); | |
2555 | ||
2556 | MODULE_DESCRIPTION("Renesas USB3.0 Peripheral driver"); | |
2557 | MODULE_LICENSE("GPL v2"); | |
2558 | MODULE_AUTHOR("Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>"); | |
2559 | MODULE_ALIAS("platform:renesas_usb3"); |