1dad0d04fSFariya Fatima /** 2dad0d04fSFariya Fatima * Copyright (c) 2014 Redpine Signals Inc. 3dad0d04fSFariya Fatima * 4dad0d04fSFariya Fatima * Permission to use, copy, modify, and/or distribute this software for any 5dad0d04fSFariya Fatima * purpose with or without fee is hereby granted, provided that the above 6dad0d04fSFariya Fatima * copyright notice and this permission notice appear in all copies. 7dad0d04fSFariya Fatima * 8dad0d04fSFariya Fatima * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 9dad0d04fSFariya Fatima * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 10dad0d04fSFariya Fatima * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 11dad0d04fSFariya Fatima * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 12dad0d04fSFariya Fatima * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 13dad0d04fSFariya Fatima * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 14dad0d04fSFariya Fatima * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 15dad0d04fSFariya Fatima * 16dad0d04fSFariya Fatima */ 17dad0d04fSFariya Fatima 18dad0d04fSFariya Fatima #include <linux/module.h> 19dad0d04fSFariya Fatima #include "rsi_usb.h" 20dad0d04fSFariya Fatima 21dad0d04fSFariya Fatima /** 22dad0d04fSFariya Fatima * rsi_usb_card_write() - This function writes to the USB Card. 23dad0d04fSFariya Fatima * @adapter: Pointer to the adapter structure. 24dad0d04fSFariya Fatima * @buf: Pointer to the buffer from where the data has to be taken. 25dad0d04fSFariya Fatima * @len: Length to be written. 26dad0d04fSFariya Fatima * @endpoint: Type of endpoint. 27dad0d04fSFariya Fatima * 28dad0d04fSFariya Fatima * Return: status: 0 on success, -1 on failure. 29dad0d04fSFariya Fatima */ 30dad0d04fSFariya Fatima static int rsi_usb_card_write(struct rsi_hw *adapter, 31dad0d04fSFariya Fatima void *buf, 32dad0d04fSFariya Fatima u16 len, 33dad0d04fSFariya Fatima u8 endpoint) 34dad0d04fSFariya Fatima { 35dad0d04fSFariya Fatima struct rsi_91x_usbdev *dev = (struct rsi_91x_usbdev *)adapter->rsi_dev; 36dad0d04fSFariya Fatima int status; 37dad0d04fSFariya Fatima s32 transfer; 38dad0d04fSFariya Fatima 39dad0d04fSFariya Fatima status = usb_bulk_msg(dev->usbdev, 40dad0d04fSFariya Fatima usb_sndbulkpipe(dev->usbdev, 41dad0d04fSFariya Fatima dev->bulkout_endpoint_addr[endpoint - 1]), 42dad0d04fSFariya Fatima buf, 43dad0d04fSFariya Fatima len, 44dad0d04fSFariya Fatima &transfer, 45dad0d04fSFariya Fatima HZ * 5); 46dad0d04fSFariya Fatima 47dad0d04fSFariya Fatima if (status < 0) { 48dad0d04fSFariya Fatima rsi_dbg(ERR_ZONE, 49dad0d04fSFariya Fatima "Card write failed with error code :%10d\n", status); 50dad0d04fSFariya Fatima dev->write_fail = 1; 51dad0d04fSFariya Fatima } 52dad0d04fSFariya Fatima return status; 53dad0d04fSFariya Fatima } 54dad0d04fSFariya Fatima 55dad0d04fSFariya Fatima /** 56dad0d04fSFariya Fatima * rsi_write_multiple() - This function writes multiple bytes of information 57dad0d04fSFariya Fatima * to the USB card. 58dad0d04fSFariya Fatima * @adapter: Pointer to the adapter structure. 59dad0d04fSFariya Fatima * @addr: Address of the register. 60dad0d04fSFariya Fatima * @data: Pointer to the data that has to be written. 61dad0d04fSFariya Fatima * @count: Number of multiple bytes to be written. 62dad0d04fSFariya Fatima * 63dad0d04fSFariya Fatima * Return: 0 on success, -1 on failure. 64dad0d04fSFariya Fatima */ 65dad0d04fSFariya Fatima static int rsi_write_multiple(struct rsi_hw *adapter, 66dad0d04fSFariya Fatima u8 endpoint, 67dad0d04fSFariya Fatima u8 *data, 68dad0d04fSFariya Fatima u32 count) 69dad0d04fSFariya Fatima { 70dad0d04fSFariya Fatima struct rsi_91x_usbdev *dev = (struct rsi_91x_usbdev *)adapter->rsi_dev; 71dad0d04fSFariya Fatima u8 *seg = dev->tx_buffer; 72dad0d04fSFariya Fatima 73dad0d04fSFariya Fatima if (dev->write_fail) 74dad0d04fSFariya Fatima return 0; 75dad0d04fSFariya Fatima 76dad0d04fSFariya Fatima if (endpoint == MGMT_EP) { 77dad0d04fSFariya Fatima memset(seg, 0, RSI_USB_TX_HEAD_ROOM); 78dad0d04fSFariya Fatima memcpy(seg + RSI_USB_TX_HEAD_ROOM, data, count); 79dad0d04fSFariya Fatima } else { 80dad0d04fSFariya Fatima seg = ((u8 *)data - RSI_USB_TX_HEAD_ROOM); 81dad0d04fSFariya Fatima } 82dad0d04fSFariya Fatima 83dad0d04fSFariya Fatima return rsi_usb_card_write(adapter, 84dad0d04fSFariya Fatima seg, 85dad0d04fSFariya Fatima count + RSI_USB_TX_HEAD_ROOM, 86dad0d04fSFariya Fatima endpoint); 87dad0d04fSFariya Fatima } 88dad0d04fSFariya Fatima 89dad0d04fSFariya Fatima /** 90dad0d04fSFariya Fatima * rsi_find_bulk_in_and_out_endpoints() - This function initializes the bulk 91dad0d04fSFariya Fatima * endpoints to the device. 92dad0d04fSFariya Fatima * @interface: Pointer to the USB interface structure. 93dad0d04fSFariya Fatima * @adapter: Pointer to the adapter structure. 94dad0d04fSFariya Fatima * 95dad0d04fSFariya Fatima * Return: ret_val: 0 on success, -ENOMEM on failure. 96dad0d04fSFariya Fatima */ 97dad0d04fSFariya Fatima static int rsi_find_bulk_in_and_out_endpoints(struct usb_interface *interface, 98dad0d04fSFariya Fatima struct rsi_hw *adapter) 99dad0d04fSFariya Fatima { 100dad0d04fSFariya Fatima struct rsi_91x_usbdev *dev = (struct rsi_91x_usbdev *)adapter->rsi_dev; 101dad0d04fSFariya Fatima struct usb_host_interface *iface_desc; 102dad0d04fSFariya Fatima struct usb_endpoint_descriptor *endpoint; 103dad0d04fSFariya Fatima __le16 buffer_size; 104dad0d04fSFariya Fatima int ii, bep_found = 0; 105dad0d04fSFariya Fatima 106dad0d04fSFariya Fatima iface_desc = &(interface->altsetting[0]); 107dad0d04fSFariya Fatima 108dad0d04fSFariya Fatima for (ii = 0; ii < iface_desc->desc.bNumEndpoints; ++ii) { 109dad0d04fSFariya Fatima endpoint = &(iface_desc->endpoint[ii].desc); 110dad0d04fSFariya Fatima 111dad0d04fSFariya Fatima if ((!(dev->bulkin_endpoint_addr)) && 112dad0d04fSFariya Fatima (endpoint->bEndpointAddress & USB_DIR_IN) && 113dad0d04fSFariya Fatima ((endpoint->bmAttributes & 114dad0d04fSFariya Fatima USB_ENDPOINT_XFERTYPE_MASK) == 115dad0d04fSFariya Fatima USB_ENDPOINT_XFER_BULK)) { 116dad0d04fSFariya Fatima buffer_size = endpoint->wMaxPacketSize; 117dad0d04fSFariya Fatima dev->bulkin_size = buffer_size; 118dad0d04fSFariya Fatima dev->bulkin_endpoint_addr = 119dad0d04fSFariya Fatima endpoint->bEndpointAddress; 120dad0d04fSFariya Fatima } 121dad0d04fSFariya Fatima 122dad0d04fSFariya Fatima if (!dev->bulkout_endpoint_addr[bep_found] && 123dad0d04fSFariya Fatima !(endpoint->bEndpointAddress & USB_DIR_IN) && 124dad0d04fSFariya Fatima ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == 125dad0d04fSFariya Fatima USB_ENDPOINT_XFER_BULK)) { 126dad0d04fSFariya Fatima dev->bulkout_endpoint_addr[bep_found] = 127dad0d04fSFariya Fatima endpoint->bEndpointAddress; 128dad0d04fSFariya Fatima buffer_size = endpoint->wMaxPacketSize; 129dad0d04fSFariya Fatima dev->bulkout_size[bep_found] = buffer_size; 130dad0d04fSFariya Fatima bep_found++; 131dad0d04fSFariya Fatima } 132dad0d04fSFariya Fatima 133dad0d04fSFariya Fatima if (bep_found >= MAX_BULK_EP) 134dad0d04fSFariya Fatima break; 135dad0d04fSFariya Fatima } 136dad0d04fSFariya Fatima 137dad0d04fSFariya Fatima if (!(dev->bulkin_endpoint_addr) && 138dad0d04fSFariya Fatima (dev->bulkout_endpoint_addr[0])) 139dad0d04fSFariya Fatima return -EINVAL; 140dad0d04fSFariya Fatima 141dad0d04fSFariya Fatima return 0; 142dad0d04fSFariya Fatima } 143dad0d04fSFariya Fatima 144dad0d04fSFariya Fatima /* rsi_usb_reg_read() - This function reads data from given register address. 145dad0d04fSFariya Fatima * @usbdev: Pointer to the usb_device structure. 146dad0d04fSFariya Fatima * @reg: Address of the register to be read. 147dad0d04fSFariya Fatima * @value: Value to be read. 148dad0d04fSFariya Fatima * @len: length of data to be read. 149dad0d04fSFariya Fatima * 150dad0d04fSFariya Fatima * Return: status: 0 on success, -1 on failure. 151dad0d04fSFariya Fatima */ 152dad0d04fSFariya Fatima static int rsi_usb_reg_read(struct usb_device *usbdev, 153dad0d04fSFariya Fatima u32 reg, 154dad0d04fSFariya Fatima u16 *value, 155dad0d04fSFariya Fatima u16 len) 156dad0d04fSFariya Fatima { 157d453ba81SFariya Fatima u8 *buf; 158d453ba81SFariya Fatima int status = -ENOMEM; 159d453ba81SFariya Fatima 160d453ba81SFariya Fatima buf = kmalloc(0x04, GFP_KERNEL); 161d453ba81SFariya Fatima if (!buf) 162d453ba81SFariya Fatima return status; 163dad0d04fSFariya Fatima 164dad0d04fSFariya Fatima status = usb_control_msg(usbdev, 165dad0d04fSFariya Fatima usb_rcvctrlpipe(usbdev, 0), 166dad0d04fSFariya Fatima USB_VENDOR_REGISTER_READ, 167dad0d04fSFariya Fatima USB_TYPE_VENDOR, 168dad0d04fSFariya Fatima ((reg & 0xffff0000) >> 16), (reg & 0xffff), 169d453ba81SFariya Fatima (void *)buf, 170dad0d04fSFariya Fatima len, 171dad0d04fSFariya Fatima HZ * 5); 172dad0d04fSFariya Fatima 173d453ba81SFariya Fatima *value = (buf[0] | (buf[1] << 8)); 174dad0d04fSFariya Fatima if (status < 0) { 175dad0d04fSFariya Fatima rsi_dbg(ERR_ZONE, 176dad0d04fSFariya Fatima "%s: Reg read failed with error code :%d\n", 177dad0d04fSFariya Fatima __func__, status); 178dad0d04fSFariya Fatima } 179d453ba81SFariya Fatima kfree(buf); 180d453ba81SFariya Fatima 181dad0d04fSFariya Fatima return status; 182dad0d04fSFariya Fatima } 183dad0d04fSFariya Fatima 184dad0d04fSFariya Fatima /** 185dad0d04fSFariya Fatima * rsi_usb_reg_write() - This function writes the given data into the given 186dad0d04fSFariya Fatima * register address. 187dad0d04fSFariya Fatima * @usbdev: Pointer to the usb_device structure. 188dad0d04fSFariya Fatima * @reg: Address of the register. 189dad0d04fSFariya Fatima * @value: Value to write. 190dad0d04fSFariya Fatima * @len: Length of data to be written. 191dad0d04fSFariya Fatima * 192dad0d04fSFariya Fatima * Return: status: 0 on success, -1 on failure. 193dad0d04fSFariya Fatima */ 194dad0d04fSFariya Fatima static int rsi_usb_reg_write(struct usb_device *usbdev, 195dad0d04fSFariya Fatima u32 reg, 196dad0d04fSFariya Fatima u16 value, 197dad0d04fSFariya Fatima u16 len) 198dad0d04fSFariya Fatima { 199d453ba81SFariya Fatima u8 *usb_reg_buf; 200d453ba81SFariya Fatima int status = -ENOMEM; 201d453ba81SFariya Fatima 202d453ba81SFariya Fatima usb_reg_buf = kmalloc(0x04, GFP_KERNEL); 203d453ba81SFariya Fatima if (!usb_reg_buf) 204d453ba81SFariya Fatima return status; 205dad0d04fSFariya Fatima 206dad0d04fSFariya Fatima usb_reg_buf[0] = (value & 0x00ff); 207dad0d04fSFariya Fatima usb_reg_buf[1] = (value & 0xff00) >> 8; 208dad0d04fSFariya Fatima usb_reg_buf[2] = 0x0; 209dad0d04fSFariya Fatima usb_reg_buf[3] = 0x0; 210dad0d04fSFariya Fatima 211dad0d04fSFariya Fatima status = usb_control_msg(usbdev, 212dad0d04fSFariya Fatima usb_sndctrlpipe(usbdev, 0), 213dad0d04fSFariya Fatima USB_VENDOR_REGISTER_WRITE, 214dad0d04fSFariya Fatima USB_TYPE_VENDOR, 215dad0d04fSFariya Fatima ((reg & 0xffff0000) >> 16), 216dad0d04fSFariya Fatima (reg & 0xffff), 217dad0d04fSFariya Fatima (void *)usb_reg_buf, 218dad0d04fSFariya Fatima len, 219dad0d04fSFariya Fatima HZ * 5); 220dad0d04fSFariya Fatima if (status < 0) { 221dad0d04fSFariya Fatima rsi_dbg(ERR_ZONE, 222dad0d04fSFariya Fatima "%s: Reg write failed with error code :%d\n", 223dad0d04fSFariya Fatima __func__, status); 224dad0d04fSFariya Fatima } 225d453ba81SFariya Fatima kfree(usb_reg_buf); 226d453ba81SFariya Fatima 227dad0d04fSFariya Fatima return status; 228dad0d04fSFariya Fatima } 229dad0d04fSFariya Fatima 230dad0d04fSFariya Fatima /** 231dad0d04fSFariya Fatima * rsi_rx_done_handler() - This function is called when a packet is received 232dad0d04fSFariya Fatima * from USB stack. This is callback to recieve done. 233dad0d04fSFariya Fatima * @urb: Received URB. 234dad0d04fSFariya Fatima * 235dad0d04fSFariya Fatima * Return: None. 236dad0d04fSFariya Fatima */ 237dad0d04fSFariya Fatima static void rsi_rx_done_handler(struct urb *urb) 238dad0d04fSFariya Fatima { 239dad0d04fSFariya Fatima struct rsi_hw *adapter = urb->context; 240dad0d04fSFariya Fatima struct rsi_91x_usbdev *dev = (struct rsi_91x_usbdev *)adapter->rsi_dev; 241dad0d04fSFariya Fatima 242dad0d04fSFariya Fatima if (urb->status) 243dad0d04fSFariya Fatima return; 244dad0d04fSFariya Fatima 245dad0d04fSFariya Fatima rsi_set_event(&dev->rx_thread.event); 246dad0d04fSFariya Fatima } 247dad0d04fSFariya Fatima 248dad0d04fSFariya Fatima /** 249dad0d04fSFariya Fatima * rsi_rx_urb_submit() - This function submits the given URB to the USB stack. 250dad0d04fSFariya Fatima * @adapter: Pointer to the adapter structure. 251dad0d04fSFariya Fatima * 252dad0d04fSFariya Fatima * Return: 0 on success, -1 on failure. 253dad0d04fSFariya Fatima */ 254dad0d04fSFariya Fatima static int rsi_rx_urb_submit(struct rsi_hw *adapter) 255dad0d04fSFariya Fatima { 256dad0d04fSFariya Fatima struct rsi_91x_usbdev *dev = (struct rsi_91x_usbdev *)adapter->rsi_dev; 257dad0d04fSFariya Fatima struct urb *urb = dev->rx_usb_urb[0]; 258dad0d04fSFariya Fatima int status; 259dad0d04fSFariya Fatima 260dad0d04fSFariya Fatima usb_fill_bulk_urb(urb, 261dad0d04fSFariya Fatima dev->usbdev, 262dad0d04fSFariya Fatima usb_rcvbulkpipe(dev->usbdev, 263dad0d04fSFariya Fatima dev->bulkin_endpoint_addr), 264dad0d04fSFariya Fatima urb->transfer_buffer, 265dad0d04fSFariya Fatima 3000, 266dad0d04fSFariya Fatima rsi_rx_done_handler, 267dad0d04fSFariya Fatima adapter); 268dad0d04fSFariya Fatima 269dad0d04fSFariya Fatima status = usb_submit_urb(urb, GFP_KERNEL); 270dad0d04fSFariya Fatima if (status) 271dad0d04fSFariya Fatima rsi_dbg(ERR_ZONE, "%s: Failed in urb submission\n", __func__); 272dad0d04fSFariya Fatima 273dad0d04fSFariya Fatima return status; 274dad0d04fSFariya Fatima } 275dad0d04fSFariya Fatima 276dad0d04fSFariya Fatima /** 277dad0d04fSFariya Fatima * rsi_usb_write_register_multiple() - This function writes multiple bytes of 278dad0d04fSFariya Fatima * information to multiple registers. 279dad0d04fSFariya Fatima * @adapter: Pointer to the adapter structure. 280dad0d04fSFariya Fatima * @addr: Address of the register. 281dad0d04fSFariya Fatima * @data: Pointer to the data that has to be written. 282dad0d04fSFariya Fatima * @count: Number of multiple bytes to be written on to the registers. 283dad0d04fSFariya Fatima * 284dad0d04fSFariya Fatima * Return: status: 0 on success, -1 on failure. 285dad0d04fSFariya Fatima */ 286dad0d04fSFariya Fatima int rsi_usb_write_register_multiple(struct rsi_hw *adapter, 287dad0d04fSFariya Fatima u32 addr, 288dad0d04fSFariya Fatima u8 *data, 289dad0d04fSFariya Fatima u32 count) 290dad0d04fSFariya Fatima { 291dad0d04fSFariya Fatima struct rsi_91x_usbdev *dev = (struct rsi_91x_usbdev *)adapter->rsi_dev; 292dad0d04fSFariya Fatima u8 *buf; 293dad0d04fSFariya Fatima u8 transfer; 294dad0d04fSFariya Fatima int status = 0; 295dad0d04fSFariya Fatima 296dad0d04fSFariya Fatima buf = kzalloc(4096, GFP_KERNEL); 297dad0d04fSFariya Fatima if (!buf) 298dad0d04fSFariya Fatima return -ENOMEM; 299dad0d04fSFariya Fatima 300dad0d04fSFariya Fatima while (count) { 301d453ba81SFariya Fatima transfer = (u8)(min_t(u32, count, 4096)); 302dad0d04fSFariya Fatima memcpy(buf, data, transfer); 303dad0d04fSFariya Fatima status = usb_control_msg(dev->usbdev, 304dad0d04fSFariya Fatima usb_sndctrlpipe(dev->usbdev, 0), 305dad0d04fSFariya Fatima USB_VENDOR_REGISTER_WRITE, 306dad0d04fSFariya Fatima USB_TYPE_VENDOR, 307dad0d04fSFariya Fatima ((addr & 0xffff0000) >> 16), 308dad0d04fSFariya Fatima (addr & 0xffff), 309dad0d04fSFariya Fatima (void *)buf, 310dad0d04fSFariya Fatima transfer, 311dad0d04fSFariya Fatima HZ * 5); 312dad0d04fSFariya Fatima if (status < 0) { 313dad0d04fSFariya Fatima rsi_dbg(ERR_ZONE, 314dad0d04fSFariya Fatima "Reg write failed with error code :%d\n", 315dad0d04fSFariya Fatima status); 316dad0d04fSFariya Fatima } else { 317dad0d04fSFariya Fatima count -= transfer; 318dad0d04fSFariya Fatima data += transfer; 319dad0d04fSFariya Fatima addr += transfer; 320dad0d04fSFariya Fatima } 321dad0d04fSFariya Fatima } 322dad0d04fSFariya Fatima 323dad0d04fSFariya Fatima kfree(buf); 324dad0d04fSFariya Fatima return 0; 325dad0d04fSFariya Fatima } 326dad0d04fSFariya Fatima 327dad0d04fSFariya Fatima /** 328dad0d04fSFariya Fatima *rsi_usb_host_intf_write_pkt() - This function writes the packet to the 329dad0d04fSFariya Fatima * USB card. 330dad0d04fSFariya Fatima * @adapter: Pointer to the adapter structure. 331dad0d04fSFariya Fatima * @pkt: Pointer to the data to be written on to the card. 332dad0d04fSFariya Fatima * @len: Length of the data to be written on to the card. 333dad0d04fSFariya Fatima * 334dad0d04fSFariya Fatima * Return: 0 on success, -1 on failure. 335dad0d04fSFariya Fatima */ 336dad0d04fSFariya Fatima static int rsi_usb_host_intf_write_pkt(struct rsi_hw *adapter, 337dad0d04fSFariya Fatima u8 *pkt, 338dad0d04fSFariya Fatima u32 len) 339dad0d04fSFariya Fatima { 340dad0d04fSFariya Fatima u32 queueno = ((pkt[1] >> 4) & 0xf); 341dad0d04fSFariya Fatima u8 endpoint; 342dad0d04fSFariya Fatima 343dad0d04fSFariya Fatima endpoint = ((queueno == RSI_WIFI_MGMT_Q) ? MGMT_EP : DATA_EP); 344dad0d04fSFariya Fatima 345dad0d04fSFariya Fatima return rsi_write_multiple(adapter, 346dad0d04fSFariya Fatima endpoint, 347dad0d04fSFariya Fatima (u8 *)pkt, 348dad0d04fSFariya Fatima len); 349dad0d04fSFariya Fatima } 350dad0d04fSFariya Fatima 351dad0d04fSFariya Fatima /** 352dad0d04fSFariya Fatima * rsi_deinit_usb_interface() - This function deinitializes the usb interface. 353dad0d04fSFariya Fatima * @adapter: Pointer to the adapter structure. 354dad0d04fSFariya Fatima * 355dad0d04fSFariya Fatima * Return: None. 356dad0d04fSFariya Fatima */ 357dad0d04fSFariya Fatima static void rsi_deinit_usb_interface(struct rsi_hw *adapter) 358dad0d04fSFariya Fatima { 359dad0d04fSFariya Fatima struct rsi_91x_usbdev *dev = (struct rsi_91x_usbdev *)adapter->rsi_dev; 360dad0d04fSFariya Fatima 361dad0d04fSFariya Fatima rsi_kill_thread(&dev->rx_thread); 362dad0d04fSFariya Fatima kfree(adapter->priv->rx_data_pkt); 363dad0d04fSFariya Fatima kfree(dev->tx_buffer); 364dad0d04fSFariya Fatima } 365dad0d04fSFariya Fatima 366dad0d04fSFariya Fatima /** 367dad0d04fSFariya Fatima * rsi_init_usb_interface() - This function initializes the usb interface. 368dad0d04fSFariya Fatima * @adapter: Pointer to the adapter structure. 369dad0d04fSFariya Fatima * @pfunction: Pointer to USB interface structure. 370dad0d04fSFariya Fatima * 371dad0d04fSFariya Fatima * Return: 0 on success, -1 on failure. 372dad0d04fSFariya Fatima */ 373dad0d04fSFariya Fatima static int rsi_init_usb_interface(struct rsi_hw *adapter, 374dad0d04fSFariya Fatima struct usb_interface *pfunction) 375dad0d04fSFariya Fatima { 376dad0d04fSFariya Fatima struct rsi_91x_usbdev *rsi_dev; 377dad0d04fSFariya Fatima struct rsi_common *common = adapter->priv; 378dad0d04fSFariya Fatima int status; 379dad0d04fSFariya Fatima 380dad0d04fSFariya Fatima rsi_dev = kzalloc(sizeof(*rsi_dev), GFP_KERNEL); 381dad0d04fSFariya Fatima if (!rsi_dev) 382dad0d04fSFariya Fatima return -ENOMEM; 383dad0d04fSFariya Fatima 384dad0d04fSFariya Fatima adapter->rsi_dev = rsi_dev; 385dad0d04fSFariya Fatima rsi_dev->usbdev = interface_to_usbdev(pfunction); 386dad0d04fSFariya Fatima 387dad0d04fSFariya Fatima if (rsi_find_bulk_in_and_out_endpoints(pfunction, adapter)) 388dad0d04fSFariya Fatima return -EINVAL; 389dad0d04fSFariya Fatima 390dad0d04fSFariya Fatima adapter->device = &pfunction->dev; 391dad0d04fSFariya Fatima usb_set_intfdata(pfunction, adapter); 392dad0d04fSFariya Fatima 393dad0d04fSFariya Fatima common->rx_data_pkt = kmalloc(2048, GFP_KERNEL); 394dad0d04fSFariya Fatima if (!common->rx_data_pkt) { 395dad0d04fSFariya Fatima rsi_dbg(ERR_ZONE, "%s: Failed to allocate memory\n", 396dad0d04fSFariya Fatima __func__); 397dad0d04fSFariya Fatima return -ENOMEM; 398dad0d04fSFariya Fatima } 399dad0d04fSFariya Fatima 4005bc5ca85SAlexey Khoroshilov rsi_dev->tx_buffer = kmalloc(2048, GFP_KERNEL); 401dad0d04fSFariya Fatima rsi_dev->rx_usb_urb[0] = usb_alloc_urb(0, GFP_KERNEL); 402dad0d04fSFariya Fatima rsi_dev->rx_usb_urb[0]->transfer_buffer = adapter->priv->rx_data_pkt; 403dad0d04fSFariya Fatima rsi_dev->tx_blk_size = 252; 404dad0d04fSFariya Fatima 405dad0d04fSFariya Fatima /* Initializing function callbacks */ 406dad0d04fSFariya Fatima adapter->rx_urb_submit = rsi_rx_urb_submit; 407dad0d04fSFariya Fatima adapter->host_intf_write_pkt = rsi_usb_host_intf_write_pkt; 408dad0d04fSFariya Fatima adapter->check_hw_queue_status = rsi_usb_check_queue_status; 409dad0d04fSFariya Fatima adapter->determine_event_timeout = rsi_usb_event_timeout; 410dad0d04fSFariya Fatima 411dad0d04fSFariya Fatima rsi_init_event(&rsi_dev->rx_thread.event); 412dad0d04fSFariya Fatima status = rsi_create_kthread(common, &rsi_dev->rx_thread, 413dad0d04fSFariya Fatima rsi_usb_rx_thread, "RX-Thread"); 414dad0d04fSFariya Fatima if (status) { 415dad0d04fSFariya Fatima rsi_dbg(ERR_ZONE, "%s: Unable to init rx thrd\n", __func__); 416dad0d04fSFariya Fatima goto fail; 417dad0d04fSFariya Fatima } 418dad0d04fSFariya Fatima 419dad0d04fSFariya Fatima #ifdef CONFIG_RSI_DEBUGFS 420dad0d04fSFariya Fatima /* In USB, one less than the MAX_DEBUGFS_ENTRIES entries is required */ 421dad0d04fSFariya Fatima adapter->num_debugfs_entries = (MAX_DEBUGFS_ENTRIES - 1); 422dad0d04fSFariya Fatima #endif 423dad0d04fSFariya Fatima 424dad0d04fSFariya Fatima rsi_dbg(INIT_ZONE, "%s: Enabled the interface\n", __func__); 425dad0d04fSFariya Fatima return 0; 426dad0d04fSFariya Fatima 427dad0d04fSFariya Fatima fail: 428dad0d04fSFariya Fatima kfree(rsi_dev->tx_buffer); 429dad0d04fSFariya Fatima kfree(common->rx_data_pkt); 430dad0d04fSFariya Fatima return status; 431dad0d04fSFariya Fatima } 432dad0d04fSFariya Fatima 433dad0d04fSFariya Fatima /** 434dad0d04fSFariya Fatima * rsi_probe() - This function is called by kernel when the driver provided 435dad0d04fSFariya Fatima * Vendor and device IDs are matched. All the initialization 436dad0d04fSFariya Fatima * work is done here. 437dad0d04fSFariya Fatima * @pfunction: Pointer to the USB interface structure. 438dad0d04fSFariya Fatima * @id: Pointer to the usb_device_id structure. 439dad0d04fSFariya Fatima * 440dad0d04fSFariya Fatima * Return: 0 on success, -1 on failure. 441dad0d04fSFariya Fatima */ 442dad0d04fSFariya Fatima static int rsi_probe(struct usb_interface *pfunction, 443dad0d04fSFariya Fatima const struct usb_device_id *id) 444dad0d04fSFariya Fatima { 445dad0d04fSFariya Fatima struct rsi_hw *adapter; 446dad0d04fSFariya Fatima struct rsi_91x_usbdev *dev; 447dad0d04fSFariya Fatima u16 fw_status; 448dad0d04fSFariya Fatima 449dad0d04fSFariya Fatima rsi_dbg(INIT_ZONE, "%s: Init function called\n", __func__); 450dad0d04fSFariya Fatima 451dad0d04fSFariya Fatima adapter = rsi_91x_init(); 452dad0d04fSFariya Fatima if (!adapter) { 453dad0d04fSFariya Fatima rsi_dbg(ERR_ZONE, "%s: Failed to init os intf ops\n", 454dad0d04fSFariya Fatima __func__); 455dad0d04fSFariya Fatima return 1; 456dad0d04fSFariya Fatima } 457dad0d04fSFariya Fatima 458dad0d04fSFariya Fatima if (rsi_init_usb_interface(adapter, pfunction)) { 459dad0d04fSFariya Fatima rsi_dbg(ERR_ZONE, "%s: Failed to init usb interface\n", 460dad0d04fSFariya Fatima __func__); 461dad0d04fSFariya Fatima goto err; 462dad0d04fSFariya Fatima } 463dad0d04fSFariya Fatima 464dad0d04fSFariya Fatima rsi_dbg(ERR_ZONE, "%s: Initialized os intf ops\n", __func__); 465dad0d04fSFariya Fatima 466dad0d04fSFariya Fatima dev = (struct rsi_91x_usbdev *)adapter->rsi_dev; 467dad0d04fSFariya Fatima 468dad0d04fSFariya Fatima if (rsi_usb_reg_read(dev->usbdev, FW_STATUS_REG, &fw_status, 2) < 0) 469dad0d04fSFariya Fatima goto err1; 470dad0d04fSFariya Fatima else 471dad0d04fSFariya Fatima fw_status &= 1; 472dad0d04fSFariya Fatima 473dad0d04fSFariya Fatima if (!fw_status) { 474dad0d04fSFariya Fatima if (rsi_usb_device_init(adapter->priv)) { 475dad0d04fSFariya Fatima rsi_dbg(ERR_ZONE, "%s: Failed in device init\n", 476dad0d04fSFariya Fatima __func__); 477dad0d04fSFariya Fatima goto err1; 478dad0d04fSFariya Fatima } 479dad0d04fSFariya Fatima 480dad0d04fSFariya Fatima if (rsi_usb_reg_write(dev->usbdev, 481dad0d04fSFariya Fatima USB_INTERNAL_REG_1, 482dad0d04fSFariya Fatima RSI_USB_READY_MAGIC_NUM, 1) < 0) 483dad0d04fSFariya Fatima goto err1; 484dad0d04fSFariya Fatima rsi_dbg(INIT_ZONE, "%s: Performed device init\n", __func__); 485dad0d04fSFariya Fatima } 486dad0d04fSFariya Fatima 487dad0d04fSFariya Fatima if (rsi_rx_urb_submit(adapter)) 488dad0d04fSFariya Fatima goto err1; 489dad0d04fSFariya Fatima 490dad0d04fSFariya Fatima return 0; 491dad0d04fSFariya Fatima err1: 492dad0d04fSFariya Fatima rsi_deinit_usb_interface(adapter); 493dad0d04fSFariya Fatima err: 494dad0d04fSFariya Fatima rsi_91x_deinit(adapter); 495dad0d04fSFariya Fatima rsi_dbg(ERR_ZONE, "%s: Failed in probe...Exiting\n", __func__); 496dad0d04fSFariya Fatima return 1; 497dad0d04fSFariya Fatima } 498dad0d04fSFariya Fatima 499dad0d04fSFariya Fatima /** 500dad0d04fSFariya Fatima * rsi_disconnect() - This function performs the reverse of the probe function, 501dad0d04fSFariya Fatima * it deintialize the driver structure. 502dad0d04fSFariya Fatima * @pfunction: Pointer to the USB interface structure. 503dad0d04fSFariya Fatima * 504dad0d04fSFariya Fatima * Return: None. 505dad0d04fSFariya Fatima */ 506dad0d04fSFariya Fatima static void rsi_disconnect(struct usb_interface *pfunction) 507dad0d04fSFariya Fatima { 508dad0d04fSFariya Fatima struct rsi_hw *adapter = usb_get_intfdata(pfunction); 509dad0d04fSFariya Fatima 510dad0d04fSFariya Fatima if (!adapter) 511dad0d04fSFariya Fatima return; 512dad0d04fSFariya Fatima 513dad0d04fSFariya Fatima rsi_mac80211_detach(adapter); 514dad0d04fSFariya Fatima rsi_deinit_usb_interface(adapter); 515dad0d04fSFariya Fatima rsi_91x_deinit(adapter); 516dad0d04fSFariya Fatima 517dad0d04fSFariya Fatima rsi_dbg(INFO_ZONE, "%s: Deinitialization completed\n", __func__); 518dad0d04fSFariya Fatima } 519dad0d04fSFariya Fatima 520dad0d04fSFariya Fatima #ifdef CONFIG_PM 521dad0d04fSFariya Fatima static int rsi_suspend(struct usb_interface *intf, pm_message_t message) 522dad0d04fSFariya Fatima { 523dad0d04fSFariya Fatima /* Not yet implemented */ 524dad0d04fSFariya Fatima return -ENOSYS; 525dad0d04fSFariya Fatima } 526dad0d04fSFariya Fatima 527dad0d04fSFariya Fatima static int rsi_resume(struct usb_interface *intf) 528dad0d04fSFariya Fatima { 529dad0d04fSFariya Fatima /* Not yet implemented */ 530dad0d04fSFariya Fatima return -ENOSYS; 531dad0d04fSFariya Fatima } 532dad0d04fSFariya Fatima #endif 533dad0d04fSFariya Fatima 534dad0d04fSFariya Fatima static const struct usb_device_id rsi_dev_table[] = { 535dad0d04fSFariya Fatima { USB_DEVICE(0x0303, 0x0100) }, 536dad0d04fSFariya Fatima { USB_DEVICE(0x041B, 0x0301) }, 537dad0d04fSFariya Fatima { USB_DEVICE(0x041B, 0x0201) }, 538dad0d04fSFariya Fatima { USB_DEVICE(0x041B, 0x9330) }, 539dad0d04fSFariya Fatima { /* Blank */}, 540dad0d04fSFariya Fatima }; 541dad0d04fSFariya Fatima 542dad0d04fSFariya Fatima static struct usb_driver rsi_driver = { 543dad0d04fSFariya Fatima .name = "RSI-USB WLAN", 544dad0d04fSFariya Fatima .probe = rsi_probe, 545dad0d04fSFariya Fatima .disconnect = rsi_disconnect, 546dad0d04fSFariya Fatima .id_table = rsi_dev_table, 547dad0d04fSFariya Fatima #ifdef CONFIG_PM 548dad0d04fSFariya Fatima .suspend = rsi_suspend, 549dad0d04fSFariya Fatima .resume = rsi_resume, 550dad0d04fSFariya Fatima #endif 551dad0d04fSFariya Fatima }; 552dad0d04fSFariya Fatima 553b101426aSAlexey Khoroshilov module_usb_driver(rsi_driver); 554dad0d04fSFariya Fatima 555dad0d04fSFariya Fatima MODULE_AUTHOR("Redpine Signals Inc"); 556dad0d04fSFariya Fatima MODULE_DESCRIPTION("Common USB layer for RSI drivers"); 557dad0d04fSFariya Fatima MODULE_SUPPORTED_DEVICE("RSI-91x"); 558dad0d04fSFariya Fatima MODULE_DEVICE_TABLE(usb, rsi_dev_table); 559dad0d04fSFariya Fatima MODULE_FIRMWARE(FIRMWARE_RSI9113); 560dad0d04fSFariya Fatima MODULE_VERSION("0.1"); 561dad0d04fSFariya Fatima MODULE_LICENSE("Dual BSD/GPL"); 562