diff options
Diffstat (limited to 'drivers/net/wireless/rt2x00/rt2800usb.c')
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt2800usb.c | 119 |
1 files changed, 4 insertions, 115 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2800usb.c b/drivers/net/wireless/rt2x00/rt2800usb.c index f8eb6d776d99..7b8d51f58038 100644 --- a/drivers/net/wireless/rt2x00/rt2800usb.c +++ b/drivers/net/wireless/rt2x00/rt2800usb.c @@ -28,7 +28,6 @@ Supported chipsets: RT2800U. */ -#include <linux/crc-ccitt.h> #include <linux/delay.h> #include <linux/etherdevice.h> #include <linux/init.h> @@ -57,84 +56,10 @@ static char *rt2800usb_get_firmware_name(struct rt2x00_dev *rt2x00dev) return FIRMWARE_RT2870; } -static bool rt2800usb_check_crc(const u8 *data, const size_t len) -{ - u16 fw_crc; - u16 crc; - - /* - * The last 2 bytes in the firmware array are the crc checksum itself, - * this means that we should never pass those 2 bytes to the crc - * algorithm. - */ - fw_crc = (data[len - 2] << 8 | data[len - 1]); - - /* - * Use the crc ccitt algorithm. - * This will return the same value as the legacy driver which - * used bit ordering reversion on the both the firmware bytes - * before input input as well as on the final output. - * Obviously using crc ccitt directly is much more efficient. - */ - crc = crc_ccitt(~0, data, len - 2); - - /* - * There is a small difference between the crc-itu-t + bitrev and - * the crc-ccitt crc calculation. In the latter method the 2 bytes - * will be swapped, use swab16 to convert the crc to the correct - * value. - */ - crc = swab16(crc); - - return fw_crc == crc; -} - -static int rt2800usb_check_firmware(struct rt2x00_dev *rt2x00dev, +static int rt2800usb_write_firmware(struct rt2x00_dev *rt2x00dev, const u8 *data, const size_t len) { - size_t offset = 0; - - /* - * Firmware files: - * There are 2 variations of the rt2870 firmware. - * a) size: 4kb - * b) size: 8kb - * Note that (b) contains 2 separate firmware blobs of 4k - * within the file. The first blob is the same firmware as (a), - * but the second blob is for the additional chipsets. - */ - if (len != 4096 && len != 8192) - return FW_BAD_LENGTH; - - /* - * Check if we need the upper 4kb firmware data or not. - */ - if ((len == 4096) && - !rt2x00_rt(rt2x00dev, RT2860) && - !rt2x00_rt(rt2x00dev, RT2872) && - !rt2x00_rt(rt2x00dev, RT3070)) - return FW_BAD_VERSION; - - /* - * 8kb firmware files must be checked as if it were - * 2 separate firmware files. - */ - while (offset < len) { - if (!rt2800usb_check_crc(data + offset, 4096)) - return FW_BAD_CRC; - - offset += 4096; - } - - return FW_OK; -} - -static int rt2800usb_load_firmware(struct rt2x00_dev *rt2x00dev, - const u8 *data, const size_t len) -{ - unsigned int i; int status; - u32 reg; u32 offset; u32 length; @@ -152,21 +77,6 @@ static int rt2800usb_load_firmware(struct rt2x00_dev *rt2x00dev, } /* - * Wait for stable hardware. - */ - for (i = 0; i < REGISTER_BUSY_COUNT; i++) { - rt2800_register_read(rt2x00dev, MAC_CSR0, ®); - if (reg && reg != ~0) - break; - msleep(1); - } - - if (i == REGISTER_BUSY_COUNT) { - ERROR(rt2x00dev, "Unstable hardware.\n"); - return -EBUSY; - } - - /* * Write firmware to device. */ rt2800_register_multiwrite(rt2x00dev, FIRMWARE_IMAGE_BASE, @@ -203,28 +113,6 @@ static int rt2800usb_load_firmware(struct rt2x00_dev *rt2x00dev, udelay(10); } - /* - * Wait for device to stabilize. - */ - for (i = 0; i < REGISTER_BUSY_COUNT; i++) { - rt2800_register_read(rt2x00dev, PBF_SYS_CTRL, ®); - if (rt2x00_get_field32(reg, PBF_SYS_CTRL_READY)) - break; - msleep(1); - } - - if (i == REGISTER_BUSY_COUNT) { - ERROR(rt2x00dev, "PBF system register not ready.\n"); - return -EBUSY; - } - - /* - * Initialize firmware. - */ - rt2800_register_write(rt2x00dev, H2M_BBP_AGENT, 0); - rt2800_register_write(rt2x00dev, H2M_MAILBOX_CSR, 0); - msleep(1); - return 0; } @@ -593,6 +481,7 @@ static const struct rt2800_ops rt2800usb_rt2800_ops = { .regbusy_read = rt2x00usb_regbusy_read, + .drv_write_firmware = rt2800usb_write_firmware, .drv_init_registers = rt2800usb_init_registers, }; @@ -670,8 +559,8 @@ static const struct ieee80211_ops rt2800usb_mac80211_ops = { static const struct rt2x00lib_ops rt2800usb_rt2x00_ops = { .probe_hw = rt2800usb_probe_hw, .get_firmware_name = rt2800usb_get_firmware_name, - .check_firmware = rt2800usb_check_firmware, - .load_firmware = rt2800usb_load_firmware, + .check_firmware = rt2800_check_firmware, + .load_firmware = rt2800_load_firmware, .initialize = rt2x00usb_initialize, .uninitialize = rt2x00usb_uninitialize, .clear_entry = rt2x00usb_clear_entry, |