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Bluetooth: btintel: Create common function for firmware download

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The firmware download flow for RAM SKU is same for both USB and UART
and this patch creates a common function for both driver.

Signed-off-by: Tedd Ho-Jeong An <tedd.an@linux.intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Tedd Ho-Jeong An
2018-01-24 09:19:21 -08:00
committed by Marcel Holtmann
parent faf174d297
commit fbbe83c52b
4 changed files with 99 additions and 154 deletions
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83
drivers/bluetooth/hci_intel.c
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@@ -33,7 +33,6 @@
#include <linux/acpi.h>
#include <linux/interrupt.h>
#include <linux/pm_runtime.h>
#include <asm/unaligned.h>
#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>
@@ -548,9 +547,7 @@ static int intel_setup(struct hci_uart *hu)
struct intel_boot_params params;
struct list_head *p;
const struct firmware *fw;
const u8 *fw_ptr;
char fwname[64];
u32 frag_len;
u32 boot_param;
ktime_t calltime, delta, rettime;
unsigned long long duration;
@@ -761,84 +758,10 @@ static int intel_setup(struct hci_uart *hu)
set_bit(STATE_DOWNLOADING, &intel->flags);
/* Start the firmware download transaction with the Init fragment
* represented by the 128 bytes of CSS header.
*/
err = btintel_secure_send(hdev, 0x00, 128, fw->data);
if (err < 0) {
bt_dev_err(hdev, "Failed to send firmware header (%d)", err);
/* Start firmware downloading and get boot parameter */
err = btintel_download_firmware(hdev, fw, &boot_param);
if (err < 0)
goto done;
}
/* Send the 256 bytes of public key information from the firmware
* as the PKey fragment.
*/
err = btintel_secure_send(hdev, 0x03, 256, fw->data + 128);
if (err < 0) {
bt_dev_err(hdev, "Failed to send firmware public key (%d)",
err);
goto done;
}
/* Send the 256 bytes of signature information from the firmware
* as the Sign fragment.
*/
err = btintel_secure_send(hdev, 0x02, 256, fw->data + 388);
if (err < 0) {
bt_dev_err(hdev, "Failed to send firmware signature (%d)",
err);
goto done;
}
fw_ptr = fw->data + 644;
frag_len = 0;
while (fw_ptr - fw->data < fw->size) {
struct hci_command_hdr *cmd = (void *)(fw_ptr + frag_len);
/* Each SKU has a different reset parameter to use in the
* HCI_Intel_Reset command and it is embedded in the firmware
* data. So, instead of using static value per SKU, check
* the firmware data and save it for later use.
*/
if (cmd->opcode == 0xfc0e) {
/* The boot parameter is the first 32-bit value
* and rest of 3 octets are reserved.
*/
boot_param = get_unaligned_le32(fw_ptr + sizeof(*cmd));
bt_dev_dbg(hdev, "boot_param=0x%x", boot_param);
}
frag_len += sizeof(*cmd) + cmd->plen;
bt_dev_dbg(hdev, "Patching %td/%zu", (fw_ptr - fw->data),
fw->size);
/* The parameter length of the secure send command requires
* a 4 byte alignment. It happens so that the firmware file
* contains proper Intel_NOP commands to align the fragments
* as needed.
*
* Send set of commands with 4 byte alignment from the
* firmware data buffer as a single Data fragement.
*/
if (frag_len % 4)
continue;
/* Send each command from the firmware data buffer as
* a single Data fragment.
*/
err = btintel_secure_send(hdev, 0x01, frag_len, fw_ptr);
if (err < 0) {
bt_dev_err(hdev, "Failed to send firmware data (%d)",
err);
goto done;
}
fw_ptr += frag_len;
frag_len = 0;
}
set_bit(STATE_FIRMWARE_LOADED, &intel->flags);