Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2011, Marvell Semiconductor Inc. |
| 3 | * Lei Wen <leiwen@marvell.com> |
| 4 | * |
Wolfgang Denk | d79de1d | 2013-07-08 09:37:19 +0200 | [diff] [blame] | 5 | * SPDX-License-Identifier: GPL-2.0+ |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 6 | * |
| 7 | * Back ported to the 8xx platform (from the 8260 platform) by |
| 8 | * Murray.Jensen@cmst.csiro.au, 27-Jan-01. |
| 9 | */ |
| 10 | |
| 11 | #include <common.h> |
| 12 | #include <command.h> |
| 13 | #include <config.h> |
| 14 | #include <net.h> |
| 15 | #include <malloc.h> |
Troy Kisky | f157394 | 2013-10-10 15:28:03 -0700 | [diff] [blame] | 16 | #include <asm/byteorder.h> |
| 17 | #include <asm/errno.h> |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 18 | #include <asm/io.h> |
Troy Kisky | 256a317 | 2013-10-10 15:28:00 -0700 | [diff] [blame] | 19 | #include <asm/unaligned.h> |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 20 | #include <linux/types.h> |
Troy Kisky | f157394 | 2013-10-10 15:28:03 -0700 | [diff] [blame] | 21 | #include <linux/usb/ch9.h> |
| 22 | #include <linux/usb/gadget.h> |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 23 | #include <usb/ci_udc.h> |
Troy Kisky | f157394 | 2013-10-10 15:28:03 -0700 | [diff] [blame] | 24 | #include "../host/ehci.h" |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 25 | #include "ci_udc.h" |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 26 | |
Marek Vasut | 9d64ac9 | 2013-07-10 03:16:38 +0200 | [diff] [blame] | 27 | /* |
| 28 | * Check if the system has too long cachelines. If the cachelines are |
| 29 | * longer then 128b, the driver will not be able flush/invalidate data |
| 30 | * cache over separate QH entries. We use 128b because one QH entry is |
| 31 | * 64b long and there are always two QH list entries for each endpoint. |
| 32 | */ |
| 33 | #if ARCH_DMA_MINALIGN > 128 |
| 34 | #error This driver can not work on systems with caches longer than 128b |
| 35 | #endif |
| 36 | |
Stephen Warren | fe52910 | 2014-07-01 11:41:15 -0600 | [diff] [blame] | 37 | /* |
Stephen Warren | d13034e | 2014-07-01 11:41:16 -0600 | [diff] [blame] | 38 | * Every QTD must be individually aligned, since we can program any |
| 39 | * QTD's address into HW. Cache flushing requires ARCH_DMA_MINALIGN, |
| 40 | * and the USB HW requires 32-byte alignment. Align to both: |
Stephen Warren | fe52910 | 2014-07-01 11:41:15 -0600 | [diff] [blame] | 41 | */ |
| 42 | #define ILIST_ALIGN roundup(ARCH_DMA_MINALIGN, 32) |
Stephen Warren | d13034e | 2014-07-01 11:41:16 -0600 | [diff] [blame] | 43 | /* Each QTD is this size */ |
| 44 | #define ILIST_ENT_RAW_SZ sizeof(struct ept_queue_item) |
| 45 | /* |
| 46 | * Align the size of the QTD too, so we can add this value to each |
| 47 | * QTD's address to get another aligned address. |
| 48 | */ |
| 49 | #define ILIST_ENT_SZ roundup(ILIST_ENT_RAW_SZ, ILIST_ALIGN) |
| 50 | /* For each endpoint, we need 2 QTDs, one for each of IN and OUT */ |
| 51 | #define ILIST_SZ (NUM_ENDPOINTS * 2 * ILIST_ENT_SZ) |
Stephen Warren | fe52910 | 2014-07-01 11:41:15 -0600 | [diff] [blame] | 52 | |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 53 | #ifndef DEBUG |
| 54 | #define DBG(x...) do {} while (0) |
| 55 | #else |
| 56 | #define DBG(x...) printf(x) |
| 57 | static const char *reqname(unsigned r) |
| 58 | { |
| 59 | switch (r) { |
| 60 | case USB_REQ_GET_STATUS: return "GET_STATUS"; |
| 61 | case USB_REQ_CLEAR_FEATURE: return "CLEAR_FEATURE"; |
| 62 | case USB_REQ_SET_FEATURE: return "SET_FEATURE"; |
| 63 | case USB_REQ_SET_ADDRESS: return "SET_ADDRESS"; |
| 64 | case USB_REQ_GET_DESCRIPTOR: return "GET_DESCRIPTOR"; |
| 65 | case USB_REQ_SET_DESCRIPTOR: return "SET_DESCRIPTOR"; |
| 66 | case USB_REQ_GET_CONFIGURATION: return "GET_CONFIGURATION"; |
| 67 | case USB_REQ_SET_CONFIGURATION: return "SET_CONFIGURATION"; |
| 68 | case USB_REQ_GET_INTERFACE: return "GET_INTERFACE"; |
| 69 | case USB_REQ_SET_INTERFACE: return "SET_INTERFACE"; |
| 70 | default: return "*UNKNOWN*"; |
| 71 | } |
| 72 | } |
| 73 | #endif |
| 74 | |
Stephen Warren | b3dc422 | 2014-05-29 14:53:01 -0600 | [diff] [blame] | 75 | static struct usb_endpoint_descriptor ep0_desc = { |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 76 | .bLength = sizeof(struct usb_endpoint_descriptor), |
| 77 | .bDescriptorType = USB_DT_ENDPOINT, |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 78 | .bEndpointAddress = USB_DIR_IN, |
| 79 | .bmAttributes = USB_ENDPOINT_XFER_CONTROL, |
| 80 | }; |
| 81 | |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 82 | static int ci_pullup(struct usb_gadget *gadget, int is_on); |
| 83 | static int ci_ep_enable(struct usb_ep *ep, |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 84 | const struct usb_endpoint_descriptor *desc); |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 85 | static int ci_ep_disable(struct usb_ep *ep); |
| 86 | static int ci_ep_queue(struct usb_ep *ep, |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 87 | struct usb_request *req, gfp_t gfp_flags); |
| 88 | static struct usb_request * |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 89 | ci_ep_alloc_request(struct usb_ep *ep, unsigned int gfp_flags); |
| 90 | static void ci_ep_free_request(struct usb_ep *ep, struct usb_request *_req); |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 91 | |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 92 | static struct usb_gadget_ops ci_udc_ops = { |
| 93 | .pullup = ci_pullup, |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 94 | }; |
| 95 | |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 96 | static struct usb_ep_ops ci_ep_ops = { |
| 97 | .enable = ci_ep_enable, |
| 98 | .disable = ci_ep_disable, |
| 99 | .queue = ci_ep_queue, |
| 100 | .alloc_request = ci_ep_alloc_request, |
| 101 | .free_request = ci_ep_free_request, |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 102 | }; |
| 103 | |
Marek Vasut | e126341 | 2013-07-10 03:16:30 +0200 | [diff] [blame] | 104 | /* Init values for USB endpoints. */ |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 105 | static const struct usb_ep ci_ep_init[2] = { |
Marek Vasut | e126341 | 2013-07-10 03:16:30 +0200 | [diff] [blame] | 106 | [0] = { /* EP 0 */ |
| 107 | .maxpacket = 64, |
| 108 | .name = "ep0", |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 109 | .ops = &ci_ep_ops, |
Marek Vasut | e126341 | 2013-07-10 03:16:30 +0200 | [diff] [blame] | 110 | }, |
| 111 | [1] = { /* EP 1..n */ |
| 112 | .maxpacket = 512, |
| 113 | .name = "ep-", |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 114 | .ops = &ci_ep_ops, |
Marek Vasut | e126341 | 2013-07-10 03:16:30 +0200 | [diff] [blame] | 115 | }, |
| 116 | }; |
| 117 | |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 118 | static struct ci_drv controller = { |
Marek Vasut | be0b0e7 | 2013-07-10 03:16:35 +0200 | [diff] [blame] | 119 | .gadget = { |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 120 | .name = "ci_udc", |
| 121 | .ops = &ci_udc_ops, |
Troy Kisky | 4b4df47 | 2013-09-25 18:41:09 -0700 | [diff] [blame] | 122 | .is_dualspeed = 1, |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 123 | }, |
| 124 | }; |
| 125 | |
Marek Vasut | 9212f89 | 2013-07-10 03:16:39 +0200 | [diff] [blame] | 126 | /** |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 127 | * ci_get_qh() - return queue head for endpoint |
Marek Vasut | 9212f89 | 2013-07-10 03:16:39 +0200 | [diff] [blame] | 128 | * @ep_num: Endpoint number |
| 129 | * @dir_in: Direction of the endpoint (IN = 1, OUT = 0) |
| 130 | * |
| 131 | * This function returns the QH associated with particular endpoint |
| 132 | * and it's direction. |
| 133 | */ |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 134 | static struct ept_queue_head *ci_get_qh(int ep_num, int dir_in) |
Marek Vasut | 9212f89 | 2013-07-10 03:16:39 +0200 | [diff] [blame] | 135 | { |
| 136 | return &controller.epts[(ep_num * 2) + dir_in]; |
| 137 | } |
| 138 | |
Marek Vasut | a6f6b08 | 2013-07-10 03:16:41 +0200 | [diff] [blame] | 139 | /** |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 140 | * ci_get_qtd() - return queue item for endpoint |
Marek Vasut | a6f6b08 | 2013-07-10 03:16:41 +0200 | [diff] [blame] | 141 | * @ep_num: Endpoint number |
| 142 | * @dir_in: Direction of the endpoint (IN = 1, OUT = 0) |
| 143 | * |
| 144 | * This function returns the QH associated with particular endpoint |
| 145 | * and it's direction. |
| 146 | */ |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 147 | static struct ept_queue_item *ci_get_qtd(int ep_num, int dir_in) |
Marek Vasut | a6f6b08 | 2013-07-10 03:16:41 +0200 | [diff] [blame] | 148 | { |
Stephen Warren | b8a872c | 2014-07-01 11:41:17 -0600 | [diff] [blame] | 149 | int index = (ep_num * 2) + dir_in; |
| 150 | uint8_t *imem = controller.items_mem + (index * ILIST_ENT_SZ); |
| 151 | return (struct ept_queue_item *)imem; |
Marek Vasut | a6f6b08 | 2013-07-10 03:16:41 +0200 | [diff] [blame] | 152 | } |
| 153 | |
Marek Vasut | 5846534 | 2013-07-10 03:16:42 +0200 | [diff] [blame] | 154 | /** |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 155 | * ci_flush_qh - flush cache over queue head |
Marek Vasut | 5846534 | 2013-07-10 03:16:42 +0200 | [diff] [blame] | 156 | * @ep_num: Endpoint number |
| 157 | * |
| 158 | * This function flushes cache over QH for particular endpoint. |
| 159 | */ |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 160 | static void ci_flush_qh(int ep_num) |
Marek Vasut | 5846534 | 2013-07-10 03:16:42 +0200 | [diff] [blame] | 161 | { |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 162 | struct ept_queue_head *head = ci_get_qh(ep_num, 0); |
Rob Herring | 7f40623 | 2015-03-17 15:46:35 -0500 | [diff] [blame] | 163 | const unsigned long start = (unsigned long)head; |
| 164 | const unsigned long end = start + 2 * sizeof(*head); |
Marek Vasut | 5846534 | 2013-07-10 03:16:42 +0200 | [diff] [blame] | 165 | |
| 166 | flush_dcache_range(start, end); |
| 167 | } |
| 168 | |
| 169 | /** |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 170 | * ci_invalidate_qh - invalidate cache over queue head |
Marek Vasut | 5846534 | 2013-07-10 03:16:42 +0200 | [diff] [blame] | 171 | * @ep_num: Endpoint number |
| 172 | * |
| 173 | * This function invalidates cache over QH for particular endpoint. |
| 174 | */ |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 175 | static void ci_invalidate_qh(int ep_num) |
Marek Vasut | 5846534 | 2013-07-10 03:16:42 +0200 | [diff] [blame] | 176 | { |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 177 | struct ept_queue_head *head = ci_get_qh(ep_num, 0); |
Rob Herring | 7f40623 | 2015-03-17 15:46:35 -0500 | [diff] [blame] | 178 | unsigned long start = (unsigned long)head; |
| 179 | unsigned long end = start + 2 * sizeof(*head); |
Marek Vasut | 5846534 | 2013-07-10 03:16:42 +0200 | [diff] [blame] | 180 | |
| 181 | invalidate_dcache_range(start, end); |
| 182 | } |
| 183 | |
| 184 | /** |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 185 | * ci_flush_qtd - flush cache over queue item |
Marek Vasut | 5846534 | 2013-07-10 03:16:42 +0200 | [diff] [blame] | 186 | * @ep_num: Endpoint number |
| 187 | * |
| 188 | * This function flushes cache over qTD pair for particular endpoint. |
| 189 | */ |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 190 | static void ci_flush_qtd(int ep_num) |
Marek Vasut | 5846534 | 2013-07-10 03:16:42 +0200 | [diff] [blame] | 191 | { |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 192 | struct ept_queue_item *item = ci_get_qtd(ep_num, 0); |
Rob Herring | 7f40623 | 2015-03-17 15:46:35 -0500 | [diff] [blame] | 193 | const unsigned long start = (unsigned long)item; |
| 194 | const unsigned long end = start + 2 * ILIST_ENT_SZ; |
Marek Vasut | 5846534 | 2013-07-10 03:16:42 +0200 | [diff] [blame] | 195 | |
| 196 | flush_dcache_range(start, end); |
| 197 | } |
| 198 | |
| 199 | /** |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 200 | * ci_invalidate_qtd - invalidate cache over queue item |
Marek Vasut | 5846534 | 2013-07-10 03:16:42 +0200 | [diff] [blame] | 201 | * @ep_num: Endpoint number |
| 202 | * |
| 203 | * This function invalidates cache over qTD pair for particular endpoint. |
| 204 | */ |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 205 | static void ci_invalidate_qtd(int ep_num) |
Marek Vasut | 5846534 | 2013-07-10 03:16:42 +0200 | [diff] [blame] | 206 | { |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 207 | struct ept_queue_item *item = ci_get_qtd(ep_num, 0); |
Rob Herring | 7f40623 | 2015-03-17 15:46:35 -0500 | [diff] [blame] | 208 | const unsigned long start = (unsigned long)item; |
| 209 | const unsigned long end = start + 2 * ILIST_ENT_SZ; |
Marek Vasut | 5846534 | 2013-07-10 03:16:42 +0200 | [diff] [blame] | 210 | |
| 211 | invalidate_dcache_range(start, end); |
| 212 | } |
| 213 | |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 214 | static struct usb_request * |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 215 | ci_ep_alloc_request(struct usb_ep *ep, unsigned int gfp_flags) |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 216 | { |
Stephen Warren | 9ac8b54 | 2014-05-29 14:53:02 -0600 | [diff] [blame] | 217 | struct ci_ep *ci_ep = container_of(ep, struct ci_ep, ep); |
| 218 | int num; |
Stephen Warren | aa5e864 | 2014-05-05 17:48:11 -0600 | [diff] [blame] | 219 | struct ci_req *ci_req; |
| 220 | |
Stephen Warren | 9ac8b54 | 2014-05-29 14:53:02 -0600 | [diff] [blame] | 221 | num = ci_ep->desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; |
| 222 | if (num == 0 && controller.ep0_req) |
| 223 | return &controller.ep0_req->req; |
| 224 | |
Stephen Warren | 1d0788f | 2014-07-01 11:41:18 -0600 | [diff] [blame] | 225 | ci_req = calloc(1, sizeof(*ci_req)); |
Stephen Warren | aa5e864 | 2014-05-05 17:48:11 -0600 | [diff] [blame] | 226 | if (!ci_req) |
| 227 | return NULL; |
| 228 | |
| 229 | INIT_LIST_HEAD(&ci_req->queue); |
Stephen Warren | aa5e864 | 2014-05-05 17:48:11 -0600 | [diff] [blame] | 230 | |
Stephen Warren | 9ac8b54 | 2014-05-29 14:53:02 -0600 | [diff] [blame] | 231 | if (num == 0) |
| 232 | controller.ep0_req = ci_req; |
| 233 | |
Stephen Warren | aa5e864 | 2014-05-05 17:48:11 -0600 | [diff] [blame] | 234 | return &ci_req->req; |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 235 | } |
| 236 | |
Stephen Warren | aa5e864 | 2014-05-05 17:48:11 -0600 | [diff] [blame] | 237 | static void ci_ep_free_request(struct usb_ep *ep, struct usb_request *req) |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 238 | { |
Stephen Warren | 10fecbd | 2014-06-10 11:02:36 -0600 | [diff] [blame] | 239 | struct ci_ep *ci_ep = container_of(ep, struct ci_ep, ep); |
| 240 | struct ci_req *ci_req = container_of(req, struct ci_req, req); |
| 241 | int num; |
| 242 | |
| 243 | num = ci_ep->desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; |
Stephen Warren | f66ae99 | 2014-06-23 12:02:48 -0600 | [diff] [blame] | 244 | if (num == 0) { |
| 245 | if (!controller.ep0_req) |
| 246 | return; |
Stephen Warren | 10fecbd | 2014-06-10 11:02:36 -0600 | [diff] [blame] | 247 | controller.ep0_req = 0; |
Stephen Warren | f66ae99 | 2014-06-23 12:02:48 -0600 | [diff] [blame] | 248 | } |
Stephen Warren | aa5e864 | 2014-05-05 17:48:11 -0600 | [diff] [blame] | 249 | |
Stephen Warren | aa5e864 | 2014-05-05 17:48:11 -0600 | [diff] [blame] | 250 | if (ci_req->b_buf) |
| 251 | free(ci_req->b_buf); |
| 252 | free(ci_req); |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 253 | } |
| 254 | |
Troy Kisky | 256a317 | 2013-10-10 15:28:00 -0700 | [diff] [blame] | 255 | static void ep_enable(int num, int in, int maxpacket) |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 256 | { |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 257 | struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor; |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 258 | unsigned n; |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 259 | |
| 260 | n = readl(&udc->epctrl[num]); |
| 261 | if (in) |
| 262 | n |= (CTRL_TXE | CTRL_TXR | CTRL_TXT_BULK); |
| 263 | else |
| 264 | n |= (CTRL_RXE | CTRL_RXR | CTRL_RXT_BULK); |
| 265 | |
Marek Vasut | 5846534 | 2013-07-10 03:16:42 +0200 | [diff] [blame] | 266 | if (num != 0) { |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 267 | struct ept_queue_head *head = ci_get_qh(num, in); |
Troy Kisky | 06bb97a | 2013-10-10 15:28:02 -0700 | [diff] [blame] | 268 | |
Troy Kisky | 256a317 | 2013-10-10 15:28:00 -0700 | [diff] [blame] | 269 | head->config = CONFIG_MAX_PKT(maxpacket) | CONFIG_ZLT; |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 270 | ci_flush_qh(num); |
Marek Vasut | 5846534 | 2013-07-10 03:16:42 +0200 | [diff] [blame] | 271 | } |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 272 | writel(n, &udc->epctrl[num]); |
| 273 | } |
| 274 | |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 275 | static int ci_ep_enable(struct usb_ep *ep, |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 276 | const struct usb_endpoint_descriptor *desc) |
| 277 | { |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 278 | struct ci_ep *ci_ep = container_of(ep, struct ci_ep, ep); |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 279 | int num, in; |
| 280 | num = desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; |
| 281 | in = (desc->bEndpointAddress & USB_DIR_IN) != 0; |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 282 | ci_ep->desc = desc; |
Troy Kisky | 256a317 | 2013-10-10 15:28:00 -0700 | [diff] [blame] | 283 | |
| 284 | if (num) { |
| 285 | int max = get_unaligned_le16(&desc->wMaxPacketSize); |
| 286 | |
| 287 | if ((max > 64) && (controller.gadget.speed == USB_SPEED_FULL)) |
| 288 | max = 64; |
| 289 | if (ep->maxpacket != max) { |
| 290 | DBG("%s: from %d to %d\n", __func__, |
| 291 | ep->maxpacket, max); |
| 292 | ep->maxpacket = max; |
| 293 | } |
| 294 | } |
| 295 | ep_enable(num, in, ep->maxpacket); |
| 296 | DBG("%s: num=%d maxpacket=%d\n", __func__, num, ep->maxpacket); |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 297 | return 0; |
| 298 | } |
| 299 | |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 300 | static int ci_ep_disable(struct usb_ep *ep) |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 301 | { |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 302 | struct ci_ep *ci_ep = container_of(ep, struct ci_ep, ep); |
Troy Kisky | 3549407 | 2013-09-25 18:41:15 -0700 | [diff] [blame] | 303 | |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 304 | ci_ep->desc = NULL; |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 305 | return 0; |
| 306 | } |
| 307 | |
Stephen Warren | aa5e864 | 2014-05-05 17:48:11 -0600 | [diff] [blame] | 308 | static int ci_bounce(struct ci_req *ci_req, int in) |
Marek Vasut | e0fc582 | 2013-07-10 03:16:43 +0200 | [diff] [blame] | 309 | { |
Stephen Warren | aa5e864 | 2014-05-05 17:48:11 -0600 | [diff] [blame] | 310 | struct usb_request *req = &ci_req->req; |
Rob Herring | 7f40623 | 2015-03-17 15:46:35 -0500 | [diff] [blame] | 311 | unsigned long addr = (unsigned long)req->buf; |
| 312 | unsigned long hwaddr; |
Stephen Warren | aa5e864 | 2014-05-05 17:48:11 -0600 | [diff] [blame] | 313 | uint32_t aligned_used_len; |
Marek Vasut | e0fc582 | 2013-07-10 03:16:43 +0200 | [diff] [blame] | 314 | |
| 315 | /* Input buffer address is not aligned. */ |
| 316 | if (addr & (ARCH_DMA_MINALIGN - 1)) |
| 317 | goto align; |
| 318 | |
| 319 | /* Input buffer length is not aligned. */ |
Stephen Warren | aa5e864 | 2014-05-05 17:48:11 -0600 | [diff] [blame] | 320 | if (req->length & (ARCH_DMA_MINALIGN - 1)) |
Marek Vasut | e0fc582 | 2013-07-10 03:16:43 +0200 | [diff] [blame] | 321 | goto align; |
| 322 | |
| 323 | /* The buffer is well aligned, only flush cache. */ |
Stephen Warren | aa5e864 | 2014-05-05 17:48:11 -0600 | [diff] [blame] | 324 | ci_req->hw_len = req->length; |
| 325 | ci_req->hw_buf = req->buf; |
Marek Vasut | e0fc582 | 2013-07-10 03:16:43 +0200 | [diff] [blame] | 326 | goto flush; |
| 327 | |
| 328 | align: |
Stephen Warren | aa5e864 | 2014-05-05 17:48:11 -0600 | [diff] [blame] | 329 | if (ci_req->b_buf && req->length > ci_req->b_len) { |
| 330 | free(ci_req->b_buf); |
| 331 | ci_req->b_buf = 0; |
| 332 | } |
| 333 | if (!ci_req->b_buf) { |
| 334 | ci_req->b_len = roundup(req->length, ARCH_DMA_MINALIGN); |
| 335 | ci_req->b_buf = memalign(ARCH_DMA_MINALIGN, ci_req->b_len); |
| 336 | if (!ci_req->b_buf) |
Marek Vasut | e0fc582 | 2013-07-10 03:16:43 +0200 | [diff] [blame] | 337 | return -ENOMEM; |
| 338 | } |
Stephen Warren | aa5e864 | 2014-05-05 17:48:11 -0600 | [diff] [blame] | 339 | ci_req->hw_len = ci_req->b_len; |
| 340 | ci_req->hw_buf = ci_req->b_buf; |
| 341 | |
Troy Kisky | 1567b88 | 2013-10-10 15:28:01 -0700 | [diff] [blame] | 342 | if (in) |
Stephen Warren | aa5e864 | 2014-05-05 17:48:11 -0600 | [diff] [blame] | 343 | memcpy(ci_req->hw_buf, req->buf, req->length); |
Marek Vasut | e0fc582 | 2013-07-10 03:16:43 +0200 | [diff] [blame] | 344 | |
| 345 | flush: |
Rob Herring | 7f40623 | 2015-03-17 15:46:35 -0500 | [diff] [blame] | 346 | hwaddr = (unsigned long)ci_req->hw_buf; |
Stephen Warren | aa5e864 | 2014-05-05 17:48:11 -0600 | [diff] [blame] | 347 | aligned_used_len = roundup(req->length, ARCH_DMA_MINALIGN); |
| 348 | flush_dcache_range(hwaddr, hwaddr + aligned_used_len); |
Marek Vasut | e0fc582 | 2013-07-10 03:16:43 +0200 | [diff] [blame] | 349 | |
| 350 | return 0; |
| 351 | } |
| 352 | |
Stephen Warren | aa5e864 | 2014-05-05 17:48:11 -0600 | [diff] [blame] | 353 | static void ci_debounce(struct ci_req *ci_req, int in) |
Marek Vasut | e0fc582 | 2013-07-10 03:16:43 +0200 | [diff] [blame] | 354 | { |
Stephen Warren | aa5e864 | 2014-05-05 17:48:11 -0600 | [diff] [blame] | 355 | struct usb_request *req = &ci_req->req; |
Rob Herring | 7f40623 | 2015-03-17 15:46:35 -0500 | [diff] [blame] | 356 | unsigned long addr = (unsigned long)req->buf; |
| 357 | unsigned long hwaddr = (unsigned long)ci_req->hw_buf; |
Stephen Warren | aa5e864 | 2014-05-05 17:48:11 -0600 | [diff] [blame] | 358 | uint32_t aligned_used_len; |
Marek Vasut | e0fc582 | 2013-07-10 03:16:43 +0200 | [diff] [blame] | 359 | |
Stephen Warren | aa5e864 | 2014-05-05 17:48:11 -0600 | [diff] [blame] | 360 | if (in) |
| 361 | return; |
| 362 | |
| 363 | aligned_used_len = roundup(req->actual, ARCH_DMA_MINALIGN); |
| 364 | invalidate_dcache_range(hwaddr, hwaddr + aligned_used_len); |
Marek Vasut | e0fc582 | 2013-07-10 03:16:43 +0200 | [diff] [blame] | 365 | |
Stephen Warren | aa5e864 | 2014-05-05 17:48:11 -0600 | [diff] [blame] | 366 | if (addr == hwaddr) |
| 367 | return; /* not a bounce */ |
Marek Vasut | e0fc582 | 2013-07-10 03:16:43 +0200 | [diff] [blame] | 368 | |
Stephen Warren | aa5e864 | 2014-05-05 17:48:11 -0600 | [diff] [blame] | 369 | memcpy(req->buf, ci_req->hw_buf, req->actual); |
Marek Vasut | e0fc582 | 2013-07-10 03:16:43 +0200 | [diff] [blame] | 370 | } |
| 371 | |
Stephen Warren | aa5e864 | 2014-05-05 17:48:11 -0600 | [diff] [blame] | 372 | static void ci_ep_submit_next_request(struct ci_ep *ci_ep) |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 373 | { |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 374 | struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor; |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 375 | struct ept_queue_item *item; |
| 376 | struct ept_queue_head *head; |
Stephen Warren | aa5e864 | 2014-05-05 17:48:11 -0600 | [diff] [blame] | 377 | int bit, num, len, in; |
| 378 | struct ci_req *ci_req; |
| 379 | |
| 380 | ci_ep->req_primed = true; |
| 381 | |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 382 | num = ci_ep->desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; |
| 383 | in = (ci_ep->desc->bEndpointAddress & USB_DIR_IN) != 0; |
| 384 | item = ci_get_qtd(num, in); |
| 385 | head = ci_get_qh(num, in); |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 386 | |
Stephen Warren | aa5e864 | 2014-05-05 17:48:11 -0600 | [diff] [blame] | 387 | ci_req = list_first_entry(&ci_ep->queue, struct ci_req, queue); |
| 388 | len = ci_req->req.length; |
Marek Vasut | e0fc582 | 2013-07-10 03:16:43 +0200 | [diff] [blame] | 389 | |
Stephen Warren | a9e91da | 2014-06-10 15:27:39 -0600 | [diff] [blame] | 390 | item->info = INFO_BYTES(len) | INFO_ACTIVE; |
Rob Herring | 7f40623 | 2015-03-17 15:46:35 -0500 | [diff] [blame] | 391 | item->page0 = (unsigned long)ci_req->hw_buf; |
| 392 | item->page1 = ((unsigned long)ci_req->hw_buf & 0xfffff000) + 0x1000; |
| 393 | item->page2 = ((unsigned long)ci_req->hw_buf & 0xfffff000) + 0x2000; |
| 394 | item->page3 = ((unsigned long)ci_req->hw_buf & 0xfffff000) + 0x3000; |
| 395 | item->page4 = ((unsigned long)ci_req->hw_buf & 0xfffff000) + 0x4000; |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 396 | |
Rob Herring | 7f40623 | 2015-03-17 15:46:35 -0500 | [diff] [blame] | 397 | head->next = (unsigned long)item; |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 398 | head->info = 0; |
| 399 | |
Stephen Warren | a9e91da | 2014-06-10 15:27:39 -0600 | [diff] [blame] | 400 | /* |
| 401 | * When sending the data for an IN transaction, the attached host |
| 402 | * knows that all data for the IN is sent when one of the following |
| 403 | * occurs: |
| 404 | * a) A zero-length packet is transmitted. |
| 405 | * b) A packet with length that isn't an exact multiple of the ep's |
| 406 | * maxpacket is transmitted. |
| 407 | * c) Enough data is sent to exactly fill the host's maximum expected |
| 408 | * IN transaction size. |
| 409 | * |
| 410 | * One of these conditions MUST apply at the end of an IN transaction, |
| 411 | * or the transaction will not be considered complete by the host. If |
| 412 | * none of (a)..(c) already applies, then we must force (a) to apply |
| 413 | * by explicitly sending an extra zero-length packet. |
| 414 | */ |
| 415 | /* IN !a !b !c */ |
| 416 | if (in && len && !(len % ci_ep->ep.maxpacket) && ci_req->req.zero) { |
| 417 | /* |
| 418 | * Each endpoint has 2 items allocated, even though typically |
| 419 | * only 1 is used at a time since either an IN or an OUT but |
| 420 | * not both is queued. For an IN transaction, item currently |
| 421 | * points at the second of these items, so we know that we |
Stephen Warren | 6667e23 | 2014-07-01 11:41:14 -0600 | [diff] [blame] | 422 | * can use the other to transmit the extra zero-length packet. |
Stephen Warren | a9e91da | 2014-06-10 15:27:39 -0600 | [diff] [blame] | 423 | */ |
Stephen Warren | 6667e23 | 2014-07-01 11:41:14 -0600 | [diff] [blame] | 424 | struct ept_queue_item *other_item = ci_get_qtd(num, 0); |
Rob Herring | 7f40623 | 2015-03-17 15:46:35 -0500 | [diff] [blame] | 425 | item->next = (unsigned long)other_item; |
Stephen Warren | 6667e23 | 2014-07-01 11:41:14 -0600 | [diff] [blame] | 426 | item = other_item; |
Stephen Warren | a9e91da | 2014-06-10 15:27:39 -0600 | [diff] [blame] | 427 | item->info = INFO_ACTIVE; |
| 428 | } |
| 429 | |
| 430 | item->next = TERMINATE; |
| 431 | item->info |= INFO_IOC; |
| 432 | |
| 433 | ci_flush_qtd(num); |
| 434 | |
Stephen Warren | aa5e864 | 2014-05-05 17:48:11 -0600 | [diff] [blame] | 435 | DBG("ept%d %s queue len %x, req %p, buffer %p\n", |
| 436 | num, in ? "in" : "out", len, ci_req, ci_req->hw_buf); |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 437 | ci_flush_qh(num); |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 438 | |
| 439 | if (in) |
| 440 | bit = EPT_TX(num); |
| 441 | else |
| 442 | bit = EPT_RX(num); |
| 443 | |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 444 | writel(bit, &udc->epprime); |
Stephen Warren | aa5e864 | 2014-05-05 17:48:11 -0600 | [diff] [blame] | 445 | } |
| 446 | |
| 447 | static int ci_ep_queue(struct usb_ep *ep, |
| 448 | struct usb_request *req, gfp_t gfp_flags) |
| 449 | { |
| 450 | struct ci_ep *ci_ep = container_of(ep, struct ci_ep, ep); |
| 451 | struct ci_req *ci_req = container_of(req, struct ci_req, req); |
| 452 | int in, ret; |
| 453 | int __maybe_unused num; |
| 454 | |
| 455 | num = ci_ep->desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; |
| 456 | in = (ci_ep->desc->bEndpointAddress & USB_DIR_IN) != 0; |
| 457 | |
Stephen Warren | 62237cf | 2014-05-29 14:53:00 -0600 | [diff] [blame] | 458 | if (!num && ci_ep->req_primed) { |
| 459 | /* |
| 460 | * The flipping of ep0 between IN and OUT relies on |
| 461 | * ci_ep_queue consuming the current IN/OUT setting |
| 462 | * immediately. If this is deferred to a later point when the |
| 463 | * req is pulled out of ci_req->queue, then the IN/OUT setting |
| 464 | * may have been changed since the req was queued, and state |
| 465 | * will get out of sync. This condition doesn't occur today, |
| 466 | * but could if bugs were introduced later, and this error |
| 467 | * check will save a lot of debugging time. |
| 468 | */ |
| 469 | printf("%s: ep0 transaction already in progress\n", __func__); |
| 470 | return -EPROTO; |
| 471 | } |
| 472 | |
Stephen Warren | aa5e864 | 2014-05-05 17:48:11 -0600 | [diff] [blame] | 473 | ret = ci_bounce(ci_req, in); |
| 474 | if (ret) |
| 475 | return ret; |
| 476 | |
| 477 | DBG("ept%d %s pre-queue req %p, buffer %p\n", |
| 478 | num, in ? "in" : "out", ci_req, ci_req->hw_buf); |
| 479 | list_add_tail(&ci_req->queue, &ci_ep->queue); |
| 480 | |
| 481 | if (!ci_ep->req_primed) |
| 482 | ci_ep_submit_next_request(ci_ep); |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 483 | |
| 484 | return 0; |
| 485 | } |
| 486 | |
Stephen Warren | aa449fa | 2014-05-29 14:53:03 -0600 | [diff] [blame] | 487 | static void flip_ep0_direction(void) |
| 488 | { |
| 489 | if (ep0_desc.bEndpointAddress == USB_DIR_IN) { |
Stephen Warren | fa51417 | 2014-06-25 11:03:18 -0600 | [diff] [blame] | 490 | DBG("%s: Flipping ep0 to OUT\n", __func__); |
Stephen Warren | aa449fa | 2014-05-29 14:53:03 -0600 | [diff] [blame] | 491 | ep0_desc.bEndpointAddress = 0; |
| 492 | } else { |
Stephen Warren | fa51417 | 2014-06-25 11:03:18 -0600 | [diff] [blame] | 493 | DBG("%s: Flipping ep0 to IN\n", __func__); |
Stephen Warren | aa449fa | 2014-05-29 14:53:03 -0600 | [diff] [blame] | 494 | ep0_desc.bEndpointAddress = USB_DIR_IN; |
| 495 | } |
| 496 | } |
| 497 | |
Stephen Warren | 192e8eb | 2014-07-01 14:22:27 -0600 | [diff] [blame] | 498 | static void handle_ep_complete(struct ci_ep *ci_ep) |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 499 | { |
| 500 | struct ept_queue_item *item; |
| 501 | int num, in, len; |
Stephen Warren | aa5e864 | 2014-05-05 17:48:11 -0600 | [diff] [blame] | 502 | struct ci_req *ci_req; |
| 503 | |
Stephen Warren | 192e8eb | 2014-07-01 14:22:27 -0600 | [diff] [blame] | 504 | num = ci_ep->desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; |
| 505 | in = (ci_ep->desc->bEndpointAddress & USB_DIR_IN) != 0; |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 506 | item = ci_get_qtd(num, in); |
| 507 | ci_invalidate_qtd(num); |
Wolfgang Denk | bd8ec7e | 2013-10-07 13:07:26 +0200 | [diff] [blame] | 508 | |
Stephen Warren | 8c02b61 | 2014-05-13 10:51:54 -0600 | [diff] [blame] | 509 | len = (item->info >> 16) & 0x7fff; |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 510 | if (item->info & 0xff) |
Troy Kisky | 3703c45 | 2013-09-25 18:41:08 -0700 | [diff] [blame] | 511 | printf("EP%d/%s FAIL info=%x pg0=%x\n", |
| 512 | num, in ? "in" : "out", item->info, item->page0); |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 513 | |
Stephen Warren | 192e8eb | 2014-07-01 14:22:27 -0600 | [diff] [blame] | 514 | ci_req = list_first_entry(&ci_ep->queue, struct ci_req, queue); |
Stephen Warren | aa5e864 | 2014-05-05 17:48:11 -0600 | [diff] [blame] | 515 | list_del_init(&ci_req->queue); |
Stephen Warren | 192e8eb | 2014-07-01 14:22:27 -0600 | [diff] [blame] | 516 | ci_ep->req_primed = false; |
Stephen Warren | aa5e864 | 2014-05-05 17:48:11 -0600 | [diff] [blame] | 517 | |
Stephen Warren | 192e8eb | 2014-07-01 14:22:27 -0600 | [diff] [blame] | 518 | if (!list_empty(&ci_ep->queue)) |
| 519 | ci_ep_submit_next_request(ci_ep); |
Stephen Warren | aa5e864 | 2014-05-05 17:48:11 -0600 | [diff] [blame] | 520 | |
Stephen Warren | aa5e864 | 2014-05-05 17:48:11 -0600 | [diff] [blame] | 521 | ci_req->req.actual = ci_req->req.length - len; |
| 522 | ci_debounce(ci_req, in); |
Troy Kisky | 1567b88 | 2013-10-10 15:28:01 -0700 | [diff] [blame] | 523 | |
Stephen Warren | aa5e864 | 2014-05-05 17:48:11 -0600 | [diff] [blame] | 524 | DBG("ept%d %s req %p, complete %x\n", |
| 525 | num, in ? "in" : "out", ci_req, len); |
Stephen Warren | aa449fa | 2014-05-29 14:53:03 -0600 | [diff] [blame] | 526 | if (num != 0 || controller.ep0_data_phase) |
Stephen Warren | 192e8eb | 2014-07-01 14:22:27 -0600 | [diff] [blame] | 527 | ci_req->req.complete(&ci_ep->ep, &ci_req->req); |
Stephen Warren | aa449fa | 2014-05-29 14:53:03 -0600 | [diff] [blame] | 528 | if (num == 0 && controller.ep0_data_phase) { |
| 529 | /* |
| 530 | * Data Stage is complete, so flip ep0 dir for Status Stage, |
| 531 | * which always transfers a packet in the opposite direction. |
| 532 | */ |
| 533 | DBG("%s: flip ep0 dir for Status Stage\n", __func__); |
| 534 | flip_ep0_direction(); |
| 535 | controller.ep0_data_phase = false; |
Stephen Warren | aa5e864 | 2014-05-05 17:48:11 -0600 | [diff] [blame] | 536 | ci_req->req.length = 0; |
Stephen Warren | 192e8eb | 2014-07-01 14:22:27 -0600 | [diff] [blame] | 537 | usb_ep_queue(&ci_ep->ep, &ci_req->req, 0); |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 538 | } |
| 539 | } |
| 540 | |
| 541 | #define SETUP(type, request) (((type) << 8) | (request)) |
| 542 | |
| 543 | static void handle_setup(void) |
| 544 | { |
Stephen Warren | aa5e864 | 2014-05-05 17:48:11 -0600 | [diff] [blame] | 545 | struct ci_ep *ci_ep = &controller.ep[0]; |
| 546 | struct ci_req *ci_req; |
| 547 | struct usb_request *req; |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 548 | struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor; |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 549 | struct ept_queue_head *head; |
| 550 | struct usb_ctrlrequest r; |
| 551 | int status = 0; |
| 552 | int num, in, _num, _in, i; |
| 553 | char *buf; |
Stephen Warren | aa5e864 | 2014-05-05 17:48:11 -0600 | [diff] [blame] | 554 | |
Stephen Warren | 9ac8b54 | 2014-05-29 14:53:02 -0600 | [diff] [blame] | 555 | ci_req = controller.ep0_req; |
Stephen Warren | aa5e864 | 2014-05-05 17:48:11 -0600 | [diff] [blame] | 556 | req = &ci_req->req; |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 557 | head = ci_get_qh(0, 0); /* EP0 OUT */ |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 558 | |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 559 | ci_invalidate_qh(0); |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 560 | memcpy(&r, head->setup_data, sizeof(struct usb_ctrlrequest)); |
Stephen Warren | e13a704 | 2014-04-24 17:52:39 -0600 | [diff] [blame] | 561 | #ifdef CONFIG_CI_UDC_HAS_HOSTPC |
| 562 | writel(EPT_RX(0), &udc->epsetupstat); |
| 563 | #else |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 564 | writel(EPT_RX(0), &udc->epstat); |
Stephen Warren | e13a704 | 2014-04-24 17:52:39 -0600 | [diff] [blame] | 565 | #endif |
Stephen Warren | aa449fa | 2014-05-29 14:53:03 -0600 | [diff] [blame] | 566 | DBG("handle setup %s, %x, %x index %x value %x length %x\n", |
| 567 | reqname(r.bRequest), r.bRequestType, r.bRequest, r.wIndex, |
| 568 | r.wValue, r.wLength); |
| 569 | |
| 570 | /* Set EP0 dir for Data Stage based on Setup Stage data */ |
| 571 | if (r.bRequestType & USB_DIR_IN) { |
| 572 | DBG("%s: Set ep0 to IN for Data Stage\n", __func__); |
| 573 | ep0_desc.bEndpointAddress = USB_DIR_IN; |
| 574 | } else { |
| 575 | DBG("%s: Set ep0 to OUT for Data Stage\n", __func__); |
| 576 | ep0_desc.bEndpointAddress = 0; |
| 577 | } |
| 578 | if (r.wLength) { |
| 579 | controller.ep0_data_phase = true; |
| 580 | } else { |
| 581 | /* 0 length -> no Data Stage. Flip dir for Status Stage */ |
| 582 | DBG("%s: 0 length: flip ep0 dir for Status Stage\n", __func__); |
| 583 | flip_ep0_direction(); |
| 584 | controller.ep0_data_phase = false; |
| 585 | } |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 586 | |
Stephen Warren | aa5e864 | 2014-05-05 17:48:11 -0600 | [diff] [blame] | 587 | list_del_init(&ci_req->queue); |
| 588 | ci_ep->req_primed = false; |
| 589 | |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 590 | switch (SETUP(r.bRequestType, r.bRequest)) { |
| 591 | case SETUP(USB_RECIP_ENDPOINT, USB_REQ_CLEAR_FEATURE): |
| 592 | _num = r.wIndex & 15; |
| 593 | _in = !!(r.wIndex & 0x80); |
| 594 | |
| 595 | if ((r.wValue == 0) && (r.wLength == 0)) { |
| 596 | req->length = 0; |
| 597 | for (i = 0; i < NUM_ENDPOINTS; i++) { |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 598 | struct ci_ep *ep = &controller.ep[i]; |
Troy Kisky | 256a317 | 2013-10-10 15:28:00 -0700 | [diff] [blame] | 599 | |
| 600 | if (!ep->desc) |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 601 | continue; |
Troy Kisky | 256a317 | 2013-10-10 15:28:00 -0700 | [diff] [blame] | 602 | num = ep->desc->bEndpointAddress |
Marek Vasut | 9837732 | 2013-07-10 03:16:29 +0200 | [diff] [blame] | 603 | & USB_ENDPOINT_NUMBER_MASK; |
Troy Kisky | 256a317 | 2013-10-10 15:28:00 -0700 | [diff] [blame] | 604 | in = (ep->desc->bEndpointAddress |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 605 | & USB_DIR_IN) != 0; |
| 606 | if ((num == _num) && (in == _in)) { |
Troy Kisky | 256a317 | 2013-10-10 15:28:00 -0700 | [diff] [blame] | 607 | ep_enable(num, in, ep->ep.maxpacket); |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 608 | usb_ep_queue(controller.gadget.ep0, |
| 609 | req, 0); |
| 610 | break; |
| 611 | } |
| 612 | } |
| 613 | } |
| 614 | return; |
| 615 | |
| 616 | case SETUP(USB_RECIP_DEVICE, USB_REQ_SET_ADDRESS): |
| 617 | /* |
| 618 | * write address delayed (will take effect |
| 619 | * after the next IN txn) |
| 620 | */ |
| 621 | writel((r.wValue << 25) | (1 << 24), &udc->devaddr); |
| 622 | req->length = 0; |
| 623 | usb_ep_queue(controller.gadget.ep0, req, 0); |
| 624 | return; |
| 625 | |
| 626 | case SETUP(USB_DIR_IN | USB_RECIP_DEVICE, USB_REQ_GET_STATUS): |
| 627 | req->length = 2; |
| 628 | buf = (char *)req->buf; |
| 629 | buf[0] = 1 << USB_DEVICE_SELF_POWERED; |
| 630 | buf[1] = 0; |
| 631 | usb_ep_queue(controller.gadget.ep0, req, 0); |
| 632 | return; |
| 633 | } |
| 634 | /* pass request up to the gadget driver */ |
| 635 | if (controller.driver) |
| 636 | status = controller.driver->setup(&controller.gadget, &r); |
| 637 | else |
| 638 | status = -ENODEV; |
| 639 | |
| 640 | if (!status) |
| 641 | return; |
| 642 | DBG("STALL reqname %s type %x value %x, index %x\n", |
| 643 | reqname(r.bRequest), r.bRequestType, r.wValue, r.wIndex); |
| 644 | writel((1<<16) | (1 << 0), &udc->epctrl[0]); |
| 645 | } |
| 646 | |
| 647 | static void stop_activity(void) |
| 648 | { |
| 649 | int i, num, in; |
| 650 | struct ept_queue_head *head; |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 651 | struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor; |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 652 | writel(readl(&udc->epcomp), &udc->epcomp); |
Stephen Warren | e13a704 | 2014-04-24 17:52:39 -0600 | [diff] [blame] | 653 | #ifdef CONFIG_CI_UDC_HAS_HOSTPC |
| 654 | writel(readl(&udc->epsetupstat), &udc->epsetupstat); |
| 655 | #endif |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 656 | writel(readl(&udc->epstat), &udc->epstat); |
| 657 | writel(0xffffffff, &udc->epflush); |
| 658 | |
| 659 | /* error out any pending reqs */ |
| 660 | for (i = 0; i < NUM_ENDPOINTS; i++) { |
| 661 | if (i != 0) |
| 662 | writel(0, &udc->epctrl[i]); |
Marek Vasut | 9837732 | 2013-07-10 03:16:29 +0200 | [diff] [blame] | 663 | if (controller.ep[i].desc) { |
| 664 | num = controller.ep[i].desc->bEndpointAddress |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 665 | & USB_ENDPOINT_NUMBER_MASK; |
Marek Vasut | 9837732 | 2013-07-10 03:16:29 +0200 | [diff] [blame] | 666 | in = (controller.ep[i].desc->bEndpointAddress |
| 667 | & USB_DIR_IN) != 0; |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 668 | head = ci_get_qh(num, in); |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 669 | head->info = INFO_ACTIVE; |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 670 | ci_flush_qh(num); |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 671 | } |
| 672 | } |
| 673 | } |
| 674 | |
| 675 | void udc_irq(void) |
| 676 | { |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 677 | struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor; |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 678 | unsigned n = readl(&udc->usbsts); |
| 679 | writel(n, &udc->usbsts); |
| 680 | int bit, i, num, in; |
| 681 | |
| 682 | n &= (STS_SLI | STS_URI | STS_PCI | STS_UI | STS_UEI); |
| 683 | if (n == 0) |
| 684 | return; |
| 685 | |
| 686 | if (n & STS_URI) { |
| 687 | DBG("-- reset --\n"); |
| 688 | stop_activity(); |
| 689 | } |
| 690 | if (n & STS_SLI) |
| 691 | DBG("-- suspend --\n"); |
| 692 | |
| 693 | if (n & STS_PCI) { |
Troy Kisky | 256a317 | 2013-10-10 15:28:00 -0700 | [diff] [blame] | 694 | int max = 64; |
| 695 | int speed = USB_SPEED_FULL; |
| 696 | |
Stephen Warren | e13a704 | 2014-04-24 17:52:39 -0600 | [diff] [blame] | 697 | #ifdef CONFIG_CI_UDC_HAS_HOSTPC |
| 698 | bit = (readl(&udc->hostpc1_devlc) >> 25) & 3; |
| 699 | #else |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 700 | bit = (readl(&udc->portsc) >> 26) & 3; |
Stephen Warren | e13a704 | 2014-04-24 17:52:39 -0600 | [diff] [blame] | 701 | #endif |
Troy Kisky | 256a317 | 2013-10-10 15:28:00 -0700 | [diff] [blame] | 702 | DBG("-- portchange %x %s\n", bit, (bit == 2) ? "High" : "Full"); |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 703 | if (bit == 2) { |
Troy Kisky | 256a317 | 2013-10-10 15:28:00 -0700 | [diff] [blame] | 704 | speed = USB_SPEED_HIGH; |
| 705 | max = 512; |
| 706 | } |
| 707 | controller.gadget.speed = speed; |
| 708 | for (i = 1; i < NUM_ENDPOINTS; i++) { |
| 709 | if (controller.ep[i].ep.maxpacket > max) |
| 710 | controller.ep[i].ep.maxpacket = max; |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 711 | } |
| 712 | } |
| 713 | |
| 714 | if (n & STS_UEI) |
| 715 | printf("<UEI %x>\n", readl(&udc->epcomp)); |
| 716 | |
| 717 | if ((n & STS_UI) || (n & STS_UEI)) { |
Stephen Warren | e13a704 | 2014-04-24 17:52:39 -0600 | [diff] [blame] | 718 | #ifdef CONFIG_CI_UDC_HAS_HOSTPC |
| 719 | n = readl(&udc->epsetupstat); |
| 720 | #else |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 721 | n = readl(&udc->epstat); |
Stephen Warren | e13a704 | 2014-04-24 17:52:39 -0600 | [diff] [blame] | 722 | #endif |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 723 | if (n & EPT_RX(0)) |
| 724 | handle_setup(); |
| 725 | |
| 726 | n = readl(&udc->epcomp); |
| 727 | if (n != 0) |
| 728 | writel(n, &udc->epcomp); |
| 729 | |
| 730 | for (i = 0; i < NUM_ENDPOINTS && n; i++) { |
Marek Vasut | 9837732 | 2013-07-10 03:16:29 +0200 | [diff] [blame] | 731 | if (controller.ep[i].desc) { |
| 732 | num = controller.ep[i].desc->bEndpointAddress |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 733 | & USB_ENDPOINT_NUMBER_MASK; |
Marek Vasut | 9837732 | 2013-07-10 03:16:29 +0200 | [diff] [blame] | 734 | in = (controller.ep[i].desc->bEndpointAddress |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 735 | & USB_DIR_IN) != 0; |
| 736 | bit = (in) ? EPT_TX(num) : EPT_RX(num); |
| 737 | if (n & bit) |
Marek Vasut | 9837732 | 2013-07-10 03:16:29 +0200 | [diff] [blame] | 738 | handle_ep_complete(&controller.ep[i]); |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 739 | } |
| 740 | } |
| 741 | } |
| 742 | } |
| 743 | |
Kishon Vijay Abraham I | 4763e16 | 2015-02-23 18:40:23 +0530 | [diff] [blame] | 744 | int usb_gadget_handle_interrupts(int index) |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 745 | { |
| 746 | u32 value; |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 747 | struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor; |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 748 | |
| 749 | value = readl(&udc->usbsts); |
| 750 | if (value) |
| 751 | udc_irq(); |
| 752 | |
| 753 | return value; |
| 754 | } |
| 755 | |
Stephen Warren | 6e9aa0d | 2014-06-10 11:02:35 -0600 | [diff] [blame] | 756 | void udc_disconnect(void) |
| 757 | { |
| 758 | struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor; |
| 759 | /* disable pullup */ |
| 760 | stop_activity(); |
| 761 | writel(USBCMD_FS2, &udc->usbcmd); |
| 762 | udelay(800); |
| 763 | if (controller.driver) |
| 764 | controller.driver->disconnect(&controller.gadget); |
| 765 | } |
| 766 | |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 767 | static int ci_pullup(struct usb_gadget *gadget, int is_on) |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 768 | { |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 769 | struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor; |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 770 | if (is_on) { |
| 771 | /* RESET */ |
| 772 | writel(USBCMD_ITC(MICRO_8FRAME) | USBCMD_RST, &udc->usbcmd); |
| 773 | udelay(200); |
| 774 | |
Rob Herring | 7f40623 | 2015-03-17 15:46:35 -0500 | [diff] [blame] | 775 | writel((unsigned long)controller.epts, &udc->epinitaddr); |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 776 | |
| 777 | /* select DEVICE mode */ |
| 778 | writel(USBMODE_DEVICE, &udc->usbmode); |
| 779 | |
Eric Nelson | fe24e16 | 2014-09-28 18:35:14 -0700 | [diff] [blame] | 780 | #if !defined(CONFIG_USB_GADGET_DUALSPEED) |
| 781 | /* Port force Full-Speed Connect */ |
| 782 | setbits_le32(&udc->portsc, PFSC); |
| 783 | #endif |
| 784 | |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 785 | writel(0xffffffff, &udc->epflush); |
| 786 | |
| 787 | /* Turn on the USB connection by enabling the pullup resistor */ |
| 788 | writel(USBCMD_ITC(MICRO_8FRAME) | USBCMD_RUN, &udc->usbcmd); |
| 789 | } else { |
Stephen Warren | 6e9aa0d | 2014-06-10 11:02:35 -0600 | [diff] [blame] | 790 | udc_disconnect(); |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 791 | } |
| 792 | |
| 793 | return 0; |
| 794 | } |
| 795 | |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 796 | static int ci_udc_probe(void) |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 797 | { |
| 798 | struct ept_queue_head *head; |
| 799 | int i; |
Marek Vasut | 456707d | 2013-07-10 03:16:37 +0200 | [diff] [blame] | 800 | |
Marek Vasut | 806d76c | 2013-07-10 03:16:34 +0200 | [diff] [blame] | 801 | const int num = 2 * NUM_ENDPOINTS; |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 802 | |
Marek Vasut | 456707d | 2013-07-10 03:16:37 +0200 | [diff] [blame] | 803 | const int eplist_min_align = 4096; |
| 804 | const int eplist_align = roundup(eplist_min_align, ARCH_DMA_MINALIGN); |
| 805 | const int eplist_raw_sz = num * sizeof(struct ept_queue_head); |
| 806 | const int eplist_sz = roundup(eplist_raw_sz, ARCH_DMA_MINALIGN); |
| 807 | |
| 808 | /* The QH list must be aligned to 4096 bytes. */ |
| 809 | controller.epts = memalign(eplist_align, eplist_sz); |
| 810 | if (!controller.epts) |
| 811 | return -ENOMEM; |
| 812 | memset(controller.epts, 0, eplist_sz); |
| 813 | |
Stephen Warren | fe52910 | 2014-07-01 11:41:15 -0600 | [diff] [blame] | 814 | controller.items_mem = memalign(ILIST_ALIGN, ILIST_SZ); |
Marek Vasut | b62fa7d | 2013-07-10 03:16:40 +0200 | [diff] [blame] | 815 | if (!controller.items_mem) { |
| 816 | free(controller.epts); |
| 817 | return -ENOMEM; |
| 818 | } |
Stephen Warren | fe52910 | 2014-07-01 11:41:15 -0600 | [diff] [blame] | 819 | memset(controller.items_mem, 0, ILIST_SZ); |
Marek Vasut | b62fa7d | 2013-07-10 03:16:40 +0200 | [diff] [blame] | 820 | |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 821 | for (i = 0; i < 2 * NUM_ENDPOINTS; i++) { |
| 822 | /* |
Marek Vasut | 456707d | 2013-07-10 03:16:37 +0200 | [diff] [blame] | 823 | * Configure QH for each endpoint. The structure of the QH list |
| 824 | * is such that each two subsequent fields, N and N+1 where N is |
| 825 | * even, in the QH list represent QH for one endpoint. The Nth |
| 826 | * entry represents OUT configuration and the N+1th entry does |
| 827 | * represent IN configuration of the endpoint. |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 828 | */ |
Marek Vasut | 393004e | 2013-07-10 03:16:36 +0200 | [diff] [blame] | 829 | head = controller.epts + i; |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 830 | if (i < 2) |
| 831 | head->config = CONFIG_MAX_PKT(EP0_MAX_PACKET_SIZE) |
| 832 | | CONFIG_ZLT | CONFIG_IOS; |
| 833 | else |
| 834 | head->config = CONFIG_MAX_PKT(EP_MAX_PACKET_SIZE) |
| 835 | | CONFIG_ZLT; |
| 836 | head->next = TERMINATE; |
| 837 | head->info = 0; |
| 838 | |
Marek Vasut | 5846534 | 2013-07-10 03:16:42 +0200 | [diff] [blame] | 839 | if (i & 1) { |
Stephen Warren | bec1c13 | 2014-07-01 11:41:13 -0600 | [diff] [blame] | 840 | ci_flush_qh(i / 2); |
| 841 | ci_flush_qtd(i / 2); |
Marek Vasut | 5846534 | 2013-07-10 03:16:42 +0200 | [diff] [blame] | 842 | } |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 843 | } |
| 844 | |
| 845 | INIT_LIST_HEAD(&controller.gadget.ep_list); |
Marek Vasut | e126341 | 2013-07-10 03:16:30 +0200 | [diff] [blame] | 846 | |
| 847 | /* Init EP 0 */ |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 848 | memcpy(&controller.ep[0].ep, &ci_ep_init[0], sizeof(*ci_ep_init)); |
Stephen Warren | b3dc422 | 2014-05-29 14:53:01 -0600 | [diff] [blame] | 849 | controller.ep[0].desc = &ep0_desc; |
Stephen Warren | aa5e864 | 2014-05-05 17:48:11 -0600 | [diff] [blame] | 850 | INIT_LIST_HEAD(&controller.ep[0].queue); |
| 851 | controller.ep[0].req_primed = false; |
Marek Vasut | e126341 | 2013-07-10 03:16:30 +0200 | [diff] [blame] | 852 | controller.gadget.ep0 = &controller.ep[0].ep; |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 853 | INIT_LIST_HEAD(&controller.gadget.ep0->ep_list); |
Marek Vasut | e126341 | 2013-07-10 03:16:30 +0200 | [diff] [blame] | 854 | |
| 855 | /* Init EP 1..n */ |
| 856 | for (i = 1; i < NUM_ENDPOINTS; i++) { |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 857 | memcpy(&controller.ep[i].ep, &ci_ep_init[1], |
| 858 | sizeof(*ci_ep_init)); |
Stephen Warren | aa5e864 | 2014-05-05 17:48:11 -0600 | [diff] [blame] | 859 | INIT_LIST_HEAD(&controller.ep[i].queue); |
| 860 | controller.ep[i].req_primed = false; |
Marek Vasut | e126341 | 2013-07-10 03:16:30 +0200 | [diff] [blame] | 861 | list_add_tail(&controller.ep[i].ep.ep_list, |
| 862 | &controller.gadget.ep_list); |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 863 | } |
Marek Vasut | e126341 | 2013-07-10 03:16:30 +0200 | [diff] [blame] | 864 | |
Stephen Warren | 9ac8b54 | 2014-05-29 14:53:02 -0600 | [diff] [blame] | 865 | ci_ep_alloc_request(&controller.ep[0].ep, 0); |
| 866 | if (!controller.ep0_req) { |
Stephen Warren | c5d619b | 2014-06-10 11:02:37 -0600 | [diff] [blame] | 867 | free(controller.items_mem); |
Stephen Warren | 9ac8b54 | 2014-05-29 14:53:02 -0600 | [diff] [blame] | 868 | free(controller.epts); |
| 869 | return -ENOMEM; |
| 870 | } |
| 871 | |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 872 | return 0; |
| 873 | } |
| 874 | |
| 875 | int usb_gadget_register_driver(struct usb_gadget_driver *driver) |
| 876 | { |
Marek Vasut | 1f4b491 | 2013-07-10 03:16:32 +0200 | [diff] [blame] | 877 | int ret; |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 878 | |
Marek Vasut | fe67fe7 | 2013-07-10 03:16:33 +0200 | [diff] [blame] | 879 | if (!driver) |
| 880 | return -EINVAL; |
| 881 | if (!driver->bind || !driver->setup || !driver->disconnect) |
| 882 | return -EINVAL; |
| 883 | if (driver->speed != USB_SPEED_FULL && driver->speed != USB_SPEED_HIGH) |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 884 | return -EINVAL; |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 885 | |
Troy Kisky | 8f9c49d | 2013-10-10 15:27:56 -0700 | [diff] [blame] | 886 | ret = usb_lowlevel_init(0, USB_INIT_DEVICE, (void **)&controller.ctrl); |
Marek Vasut | 1f4b491 | 2013-07-10 03:16:32 +0200 | [diff] [blame] | 887 | if (ret) |
| 888 | return ret; |
| 889 | |
Marek Vasut | 9ba8997 | 2014-02-06 02:43:45 +0100 | [diff] [blame] | 890 | ret = ci_udc_probe(); |
Stephen Warren | 0381a727 | 2014-04-24 17:52:38 -0600 | [diff] [blame] | 891 | #if defined(CONFIG_USB_EHCI_MX6) || defined(CONFIG_USB_EHCI_MXS) |
| 892 | /* |
| 893 | * FIXME: usb_lowlevel_init()->ehci_hcd_init() should be doing all |
| 894 | * HW-specific initialization, e.g. ULPI-vs-UTMI PHY selection |
| 895 | */ |
Marek Vasut | 1f4b491 | 2013-07-10 03:16:32 +0200 | [diff] [blame] | 896 | if (!ret) { |
Stephen Warren | 0381a727 | 2014-04-24 17:52:38 -0600 | [diff] [blame] | 897 | struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor; |
Marek Vasut | 1f4b491 | 2013-07-10 03:16:32 +0200 | [diff] [blame] | 898 | |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 899 | /* select ULPI phy */ |
| 900 | writel(PTS(PTS_ENABLE) | PFSC, &udc->portsc); |
| 901 | } |
Stephen Warren | 0381a727 | 2014-04-24 17:52:38 -0600 | [diff] [blame] | 902 | #endif |
Marek Vasut | 1f4b491 | 2013-07-10 03:16:32 +0200 | [diff] [blame] | 903 | |
| 904 | ret = driver->bind(&controller.gadget); |
| 905 | if (ret) { |
| 906 | DBG("driver->bind() returned %d\n", ret); |
| 907 | return ret; |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 908 | } |
| 909 | controller.driver = driver; |
| 910 | |
| 911 | return 0; |
| 912 | } |
| 913 | |
| 914 | int usb_gadget_unregister_driver(struct usb_gadget_driver *driver) |
| 915 | { |
Stephen Warren | 9c7ebe7 | 2014-06-10 11:02:38 -0600 | [diff] [blame] | 916 | udc_disconnect(); |
| 917 | |
Stephen Warren | f66ae99 | 2014-06-23 12:02:48 -0600 | [diff] [blame] | 918 | driver->unbind(&controller.gadget); |
| 919 | controller.driver = NULL; |
| 920 | |
Stephen Warren | 9c7ebe7 | 2014-06-10 11:02:38 -0600 | [diff] [blame] | 921 | ci_ep_free_request(&controller.ep[0].ep, &controller.ep0_req->req); |
| 922 | free(controller.items_mem); |
| 923 | free(controller.epts); |
| 924 | |
Lei Wen | a91ee2a | 2011-10-05 08:11:40 -0700 | [diff] [blame] | 925 | return 0; |
| 926 | } |
Stephen Warren | fb12f45 | 2014-08-25 14:02:15 -0600 | [diff] [blame] | 927 | |
| 928 | bool dfu_usb_get_reset(void) |
| 929 | { |
| 930 | struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor; |
| 931 | |
| 932 | return !!(readl(&udc->usbsts) & STS_URI); |
| 933 | } |