diff options
Diffstat (limited to 'drivers/staging/uwb/i1480/dfu/phy.c')
| -rw-r--r-- | drivers/staging/uwb/i1480/dfu/phy.c | 190 |
1 files changed, 0 insertions, 190 deletions
diff --git a/drivers/staging/uwb/i1480/dfu/phy.c b/drivers/staging/uwb/i1480/dfu/phy.c deleted file mode 100644 index 13512c7dda0b..000000000000 --- a/drivers/staging/uwb/i1480/dfu/phy.c +++ /dev/null @@ -1,190 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Intel Wireless UWB Link 1480 - * PHY parameters upload - * - * Copyright (C) 2005-2006 Intel Corporation - * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com> - * - * Code for uploading the PHY parameters to the PHY through the UWB - * Radio Control interface. - * - * We just send the data through the MPI interface using HWA-like - * commands and then reset the PHY to make sure it is ok. - */ -#include <linux/delay.h> -#include <linux/device.h> -#include <linux/firmware.h> -#include "../../../wusbcore/include/wusb.h" -#include "i1480-dfu.h" - - -/** - * Write a value array to an address of the MPI interface - * - * @i1480: Device descriptor - * @data: Data array to write - * @size: Size of the data array - * @returns: 0 if ok, < 0 errno code on error. - * - * The data array is organized into pairs: - * - * ADDRESS VALUE - * - * ADDRESS is BE 16 bit unsigned, VALUE 8 bit unsigned. Size thus has - * to be a multiple of three. - */ -static -int i1480_mpi_write(struct i1480 *i1480, const void *data, size_t size) -{ - int result; - struct i1480_cmd_mpi_write *cmd = i1480->cmd_buf; - struct i1480_evt_confirm *reply = i1480->evt_buf; - - BUG_ON(size > 480); - result = -ENOMEM; - cmd->rccb.bCommandType = i1480_CET_VS1; - cmd->rccb.wCommand = cpu_to_le16(i1480_CMD_MPI_WRITE); - cmd->size = cpu_to_le16(size); - memcpy(cmd->data, data, size); - reply->rceb.bEventType = i1480_CET_VS1; - reply->rceb.wEvent = i1480_CMD_MPI_WRITE; - result = i1480_cmd(i1480, "MPI-WRITE", sizeof(*cmd) + size, sizeof(*reply)); - if (result < 0) - goto out; - if (reply->bResultCode != UWB_RC_RES_SUCCESS) { - dev_err(i1480->dev, "MPI-WRITE: command execution failed: %d\n", - reply->bResultCode); - result = -EIO; - } -out: - return result; -} - - -/** - * Read a value array to from an address of the MPI interface - * - * @i1480: Device descriptor - * @data: where to place the read array - * @srcaddr: Where to read from - * @size: Size of the data read array - * @returns: 0 if ok, < 0 errno code on error. - * - * The command data array is organized into pairs ADDR0 ADDR1..., and - * the returned data in ADDR0 VALUE0 ADDR1 VALUE1... - * - * We generate the command array to be a sequential read and then - * rearrange the result. - * - * We use the i1480->cmd_buf for the command, i1480->evt_buf for the reply. - * - * As the reply has to fit in 512 bytes (i1480->evt_buffer), the max amount - * of values we can read is (512 - sizeof(*reply)) / 3 - */ -static -int i1480_mpi_read(struct i1480 *i1480, u8 *data, u16 srcaddr, size_t size) -{ - int result; - struct i1480_cmd_mpi_read *cmd = i1480->cmd_buf; - struct i1480_evt_mpi_read *reply = i1480->evt_buf; - unsigned cnt; - - memset(i1480->cmd_buf, 0x69, 512); - memset(i1480->evt_buf, 0x69, 512); - - BUG_ON(size > (i1480->buf_size - sizeof(*reply)) / 3); - result = -ENOMEM; - cmd->rccb.bCommandType = i1480_CET_VS1; - cmd->rccb.wCommand = cpu_to_le16(i1480_CMD_MPI_READ); - cmd->size = cpu_to_le16(3*size); - for (cnt = 0; cnt < size; cnt++) { - cmd->data[cnt].page = (srcaddr + cnt) >> 8; - cmd->data[cnt].offset = (srcaddr + cnt) & 0xff; - } - reply->rceb.bEventType = i1480_CET_VS1; - reply->rceb.wEvent = i1480_CMD_MPI_READ; - result = i1480_cmd(i1480, "MPI-READ", sizeof(*cmd) + 2*size, - sizeof(*reply) + 3*size); - if (result < 0) - goto out; - if (reply->bResultCode != UWB_RC_RES_SUCCESS) { - dev_err(i1480->dev, "MPI-READ: command execution failed: %d\n", - reply->bResultCode); - result = -EIO; - goto out; - } - for (cnt = 0; cnt < size; cnt++) { - if (reply->data[cnt].page != (srcaddr + cnt) >> 8) - dev_err(i1480->dev, "MPI-READ: page inconsistency at " - "index %u: expected 0x%02x, got 0x%02x\n", cnt, - (srcaddr + cnt) >> 8, reply->data[cnt].page); - if (reply->data[cnt].offset != ((srcaddr + cnt) & 0x00ff)) - dev_err(i1480->dev, "MPI-READ: offset inconsistency at " - "index %u: expected 0x%02x, got 0x%02x\n", cnt, - (srcaddr + cnt) & 0x00ff, - reply->data[cnt].offset); - data[cnt] = reply->data[cnt].value; - } - result = 0; -out: - return result; -} - - -/** - * Upload a PHY firmware, wait for it to start - * - * @i1480: Device instance - * @fw_name: Name of the file that contains the firmware - * - * We assume the MAC fw is up and running. This means we can use the - * MPI interface to write the PHY firmware. Once done, we issue an - * MBOA Reset, which will force the MAC to reset and reinitialize the - * PHY. If that works, we are ready to go. - * - * Max packet size for the MPI write is 512, so the max buffer is 480 - * (which gives us 160 byte triads of MSB, LSB and VAL for the data). - */ -int i1480_phy_fw_upload(struct i1480 *i1480) -{ - int result; - const struct firmware *fw; - const char *data_itr, *data_top; - const size_t MAX_BLK_SIZE = 480; /* 160 triads */ - size_t data_size; - u8 phy_stat; - - result = request_firmware(&fw, i1480->phy_fw_name, i1480->dev); - if (result < 0) - goto out; - /* Loop writing data in chunks as big as possible until done. */ - for (data_itr = fw->data, data_top = data_itr + fw->size; - data_itr < data_top; data_itr += MAX_BLK_SIZE) { - data_size = min(MAX_BLK_SIZE, (size_t) (data_top - data_itr)); - result = i1480_mpi_write(i1480, data_itr, data_size); - if (result < 0) - goto error_mpi_write; - } - /* Read MPI page 0, offset 6; if 0, PHY was initialized correctly. */ - result = i1480_mpi_read(i1480, &phy_stat, 0x0006, 1); - if (result < 0) { - dev_err(i1480->dev, "PHY: can't get status: %d\n", result); - goto error_mpi_status; - } - if (phy_stat != 0) { - result = -ENODEV; - dev_info(i1480->dev, "error, PHY not ready: %u\n", phy_stat); - goto error_phy_status; - } - dev_info(i1480->dev, "PHY fw '%s': uploaded\n", i1480->phy_fw_name); -error_phy_status: -error_mpi_status: -error_mpi_write: - release_firmware(fw); - if (result < 0) - dev_err(i1480->dev, "PHY fw '%s': failed to upload (%d), " - "power cycle device\n", i1480->phy_fw_name, result); -out: - return result; -} |