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-rw-r--r--drivers/bluetooth/btrtl.c350
-rw-r--r--drivers/bluetooth/btrtl.h53
2 files changed, 362 insertions, 41 deletions
diff --git a/drivers/bluetooth/btrtl.c b/drivers/bluetooth/btrtl.c
index 0f256a8abef4..2ced74f8f87d 100644
--- a/drivers/bluetooth/btrtl.c
+++ b/drivers/bluetooth/btrtl.c
@@ -21,6 +21,7 @@
#define RTL_CHIP_8723CS_VF 4
#define RTL_CHIP_8723CS_XX 5
#define RTL_EPATCH_SIGNATURE "Realtech"
+#define RTL_EPATCH_SIGNATURE_V2 "RTBTCore"
#define RTL_ROM_LMP_8703B 0x8703
#define RTL_ROM_LMP_8723A 0x1200
#define RTL_ROM_LMP_8723B 0x8723
@@ -43,6 +44,14 @@
.hci_ver = (hciv), \
.hci_bus = (bus)
+#define RTL_CHIP_SUBVER (&(struct rtl_vendor_cmd) {{0x10, 0x38, 0x04, 0x28, 0x80}})
+#define RTL_CHIP_REV (&(struct rtl_vendor_cmd) {{0x10, 0x3A, 0x04, 0x28, 0x80}})
+#define RTL_SEC_PROJ (&(struct rtl_vendor_cmd) {{0x10, 0xA4, 0x0D, 0x00, 0xb0}})
+
+#define RTL_PATCH_SNIPPETS 0x01
+#define RTL_PATCH_DUMMY_HEADER 0x02
+#define RTL_PATCH_SECURITY_HEADER 0x03
+
enum btrtl_chip_id {
CHIP_ID_8723A,
CHIP_ID_8723B,
@@ -81,6 +90,8 @@ struct btrtl_device_info {
int cfg_len;
bool drop_fw;
int project_id;
+ u8 key_id;
+ struct list_head patch_subsecs;
};
static const struct id_table ic_id_table[] = {
@@ -343,6 +354,227 @@ static int rtl_read_rom_version(struct hci_dev *hdev, u8 *version)
return 0;
}
+static int btrtl_vendor_read_reg16(struct hci_dev *hdev,
+ struct rtl_vendor_cmd *cmd, u8 *rp)
+{
+ struct sk_buff *skb;
+ int err = 0;
+
+ skb = __hci_cmd_sync(hdev, 0xfc61, sizeof(*cmd), cmd,
+ HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ err = PTR_ERR(skb);
+ rtl_dev_err(hdev, "RTL: Read reg16 failed (%d)", err);
+ return err;
+ }
+
+ if (skb->len != 3 || skb->data[0]) {
+ bt_dev_err(hdev, "RTL: Read reg16 length mismatch");
+ kfree_skb(skb);
+ return -EIO;
+ }
+
+ if (rp)
+ memcpy(rp, skb->data + 1, 2);
+
+ kfree_skb(skb);
+
+ return 0;
+}
+
+static void *rtl_iov_pull_data(struct rtl_iovec *iov, u32 len)
+{
+ void *data = iov->data;
+
+ if (iov->len < len)
+ return NULL;
+
+ iov->data += len;
+ iov->len -= len;
+
+ return data;
+}
+
+static void btrtl_insert_ordered_subsec(struct rtl_subsection *node,
+ struct btrtl_device_info *btrtl_dev)
+{
+ struct list_head *pos;
+ struct list_head *next;
+ struct rtl_subsection *subsec;
+
+ list_for_each_safe(pos, next, &btrtl_dev->patch_subsecs) {
+ subsec = list_entry(pos, struct rtl_subsection, list);
+ if (subsec->prio >= node->prio)
+ break;
+ }
+ __list_add(&node->list, pos->prev, pos);
+}
+
+static int btrtl_parse_section(struct hci_dev *hdev,
+ struct btrtl_device_info *btrtl_dev, u32 opcode,
+ u8 *data, u32 len)
+{
+ struct rtl_section_hdr *hdr;
+ struct rtl_subsection *subsec;
+ struct rtl_common_subsec *common_subsec;
+ struct rtl_sec_hdr *sec_hdr;
+ int i;
+ u8 *ptr;
+ u16 num_subsecs;
+ u32 subsec_len;
+ int rc = 0;
+ struct rtl_iovec iov = {
+ .data = data,
+ .len = len,
+ };
+
+ hdr = rtl_iov_pull_data(&iov, sizeof(*hdr));
+ if (!hdr)
+ return -EINVAL;
+ num_subsecs = le16_to_cpu(hdr->num);
+
+ for (i = 0; i < num_subsecs; i++) {
+ common_subsec = rtl_iov_pull_data(&iov, sizeof(*common_subsec));
+ if (!common_subsec)
+ break;
+ subsec_len = le32_to_cpu(common_subsec->len);
+
+ rtl_dev_dbg(hdev, "subsec, eco 0x%02x, len %08x",
+ common_subsec->eco, subsec_len);
+
+ ptr = rtl_iov_pull_data(&iov, subsec_len);
+ if (!ptr)
+ break;
+
+ if (common_subsec->eco != btrtl_dev->rom_version + 1)
+ continue;
+
+ switch (opcode) {
+ case RTL_PATCH_SECURITY_HEADER:
+ sec_hdr = (void *)common_subsec;
+ if (sec_hdr->key_id != btrtl_dev->key_id)
+ continue;
+ break;
+ }
+
+ subsec = kzalloc(sizeof(*subsec), GFP_KERNEL);
+ if (!subsec)
+ return -ENOMEM;
+ subsec->opcode = opcode;
+ subsec->prio = common_subsec->prio;
+ subsec->len = subsec_len;
+ subsec->data = ptr;
+ btrtl_insert_ordered_subsec(subsec, btrtl_dev);
+ rc += subsec_len;
+ }
+
+ return rc;
+}
+
+static int rtlbt_parse_firmware_v2(struct hci_dev *hdev,
+ struct btrtl_device_info *btrtl_dev,
+ unsigned char **_buf)
+{
+ struct rtl_epatch_header_v2 *hdr;
+ int rc;
+ u8 reg_val[2];
+ u8 key_id;
+ u32 num_sections;
+ struct rtl_section *section;
+ struct rtl_subsection *entry, *tmp;
+ u32 section_len;
+ u32 opcode;
+ int len = 0;
+ int i;
+ u8 *ptr;
+ struct rtl_iovec iov = {
+ .data = btrtl_dev->fw_data,
+ .len = btrtl_dev->fw_len - 7, /* Cut the tail */
+ };
+
+ rc = btrtl_vendor_read_reg16(hdev, RTL_SEC_PROJ, reg_val);
+ if (rc < 0)
+ return -EIO;
+ key_id = reg_val[0];
+
+ rtl_dev_dbg(hdev, "%s: key id %u", __func__, key_id);
+
+ btrtl_dev->key_id = key_id;
+
+ hdr = rtl_iov_pull_data(&iov, sizeof(*hdr));
+ if (!hdr)
+ return -EINVAL;
+ num_sections = le32_to_cpu(hdr->num_sections);
+
+ rtl_dev_dbg(hdev, "FW version %08x-%08x", *((u32 *)hdr->fw_version),
+ *((u32 *)(hdr->fw_version + 4)));
+
+ for (i = 0; i < num_sections; i++) {
+ section = rtl_iov_pull_data(&iov, sizeof(*section));
+ if (!section)
+ break;
+ section_len = le32_to_cpu(section->len);
+ opcode = le32_to_cpu(section->opcode);
+
+ rtl_dev_dbg(hdev, "opcode 0x%04x", section->opcode);
+
+ ptr = rtl_iov_pull_data(&iov, section_len);
+ if (!ptr)
+ break;
+
+ switch (opcode) {
+ case RTL_PATCH_SNIPPETS:
+ rc = btrtl_parse_section(hdev, btrtl_dev, opcode,
+ ptr, section_len);
+ break;
+ case RTL_PATCH_SECURITY_HEADER:
+ /* If key_id from chip is zero, ignore all security
+ * headers.
+ */
+ if (!key_id)
+ break;
+ rc = btrtl_parse_section(hdev, btrtl_dev, opcode,
+ ptr, section_len);
+ break;
+ case RTL_PATCH_DUMMY_HEADER:
+ rc = btrtl_parse_section(hdev, btrtl_dev, opcode,
+ ptr, section_len);
+ break;
+ default:
+ rc = 0;
+ break;
+ }
+ if (rc < 0) {
+ rtl_dev_err(hdev, "RTL: Parse section (%u) err %d",
+ opcode, rc);
+ return rc;
+ }
+ len += rc;
+ }
+
+ if (!len)
+ return -ENODATA;
+
+ /* Allocate mem and copy all found subsecs. */
+ ptr = kvmalloc(len, GFP_KERNEL);
+ if (!ptr)
+ return -ENOMEM;
+
+ len = 0;
+ list_for_each_entry_safe(entry, tmp, &btrtl_dev->patch_subsecs, list) {
+ rtl_dev_dbg(hdev, "RTL: opcode %08x, addr %p, len 0x%x",
+ entry->opcode, entry->data, entry->len);
+ memcpy(ptr + len, entry->data, entry->len);
+ len += entry->len;
+ }
+
+ if (!len)
+ return -EPERM;
+
+ *_buf = ptr;
+ return len;
+}
+
static int rtlbt_parse_firmware(struct hci_dev *hdev,
struct btrtl_device_info *btrtl_dev,
unsigned char **_buf)
@@ -377,7 +609,18 @@ static int rtlbt_parse_firmware(struct hci_dev *hdev,
{ RTL_ROM_LMP_8852A, 25 }, /* 8852C */
};
- min_size = sizeof(struct rtl_epatch_header) + sizeof(extension_sig) + 3;
+ if (btrtl_dev->fw_len <= 8)
+ return -EINVAL;
+
+ if (!memcmp(btrtl_dev->fw_data, RTL_EPATCH_SIGNATURE, 8))
+ min_size = sizeof(struct rtl_epatch_header) +
+ sizeof(extension_sig) + 3;
+ else if (!memcmp(btrtl_dev->fw_data, RTL_EPATCH_SIGNATURE_V2, 8))
+ min_size = sizeof(struct rtl_epatch_header_v2) +
+ sizeof(extension_sig) + 3;
+ else
+ return -EINVAL;
+
if (btrtl_dev->fw_len < min_size)
return -EINVAL;
@@ -442,12 +685,14 @@ static int rtlbt_parse_firmware(struct hci_dev *hdev,
return -EINVAL;
}
- epatch_info = (struct rtl_epatch_header *)btrtl_dev->fw_data;
- if (memcmp(epatch_info->signature, RTL_EPATCH_SIGNATURE, 8) != 0) {
+ if (memcmp(btrtl_dev->fw_data, RTL_EPATCH_SIGNATURE, 8) != 0) {
+ if (!memcmp(btrtl_dev->fw_data, RTL_EPATCH_SIGNATURE_V2, 8))
+ return rtlbt_parse_firmware_v2(hdev, btrtl_dev, _buf);
rtl_dev_err(hdev, "bad EPATCH signature");
return -EINVAL;
}
+ epatch_info = (struct rtl_epatch_header *)btrtl_dev->fw_data;
num_patches = le16_to_cpu(epatch_info->num_patches);
BT_DBG("fw_version=%x, num_patches=%d",
le32_to_cpu(epatch_info->fw_version), num_patches);
@@ -511,6 +756,7 @@ static int rtl_download_firmware(struct hci_dev *hdev,
int frag_len = RTL_FRAG_LEN;
int ret = 0;
int i;
+ int j = 0;
struct sk_buff *skb;
struct hci_rp_read_local_version *rp;
@@ -521,17 +767,16 @@ static int rtl_download_firmware(struct hci_dev *hdev,
for (i = 0; i < frag_num; i++) {
struct sk_buff *skb;
- BT_DBG("download fw (%d/%d)", i, frag_num);
-
- if (i > 0x7f)
- dl_cmd->index = (i & 0x7f) + 1;
- else
- dl_cmd->index = i;
+ dl_cmd->index = j++;
+ if (dl_cmd->index == 0x7f)
+ j = 1;
if (i == (frag_num - 1)) {
dl_cmd->index |= 0x80; /* data end */
frag_len = fw_len % RTL_FRAG_LEN;
}
+ rtl_dev_dbg(hdev, "download fw (%d/%d). index = %d", i,
+ frag_num, dl_cmd->index);
memcpy(dl_cmd->data, data, frag_len);
/* Send download command */
@@ -691,8 +936,16 @@ static int rtl_read_chip_type(struct hci_dev *hdev, u8 *type)
void btrtl_free(struct btrtl_device_info *btrtl_dev)
{
+ struct rtl_subsection *entry, *tmp;
+
kvfree(btrtl_dev->fw_data);
kvfree(btrtl_dev->cfg_data);
+
+ list_for_each_entry_safe(entry, tmp, &btrtl_dev->patch_subsecs, list) {
+ list_del(&entry->list);
+ kfree(entry);
+ }
+
kfree(btrtl_dev);
}
EXPORT_SYMBOL_GPL(btrtl_free);
@@ -705,10 +958,11 @@ struct btrtl_device_info *btrtl_initialize(struct hci_dev *hdev,
struct hci_rp_read_local_version *resp;
char cfg_name[40];
u16 hci_rev, lmp_subver;
- u8 hci_ver, chip_type = 0;
+ u8 hci_ver, lmp_ver, chip_type = 0;
int ret;
u16 opcode;
u8 cmd[2];
+ u8 reg_val[2];
btrtl_dev = kzalloc(sizeof(*btrtl_dev), GFP_KERNEL);
if (!btrtl_dev) {
@@ -716,6 +970,31 @@ struct btrtl_device_info *btrtl_initialize(struct hci_dev *hdev,
goto err_alloc;
}
+ INIT_LIST_HEAD(&btrtl_dev->patch_subsecs);
+
+check_version:
+ ret = btrtl_vendor_read_reg16(hdev, RTL_CHIP_SUBVER, reg_val);
+ if (ret < 0)
+ goto err_free;
+ lmp_subver = get_unaligned_le16(reg_val);
+
+ if (lmp_subver == RTL_ROM_LMP_8822B) {
+ ret = btrtl_vendor_read_reg16(hdev, RTL_CHIP_REV, reg_val);
+ if (ret < 0)
+ goto err_free;
+ hci_rev = get_unaligned_le16(reg_val);
+
+ /* 8822E */
+ if (hci_rev == 0x000e) {
+ hci_ver = 0x0c;
+ lmp_ver = 0x0c;
+ btrtl_dev->ic_info = btrtl_match_ic(lmp_subver, hci_rev,
+ hci_ver, hdev->bus,
+ chip_type);
+ goto next;
+ }
+ }
+
skb = btrtl_read_local_version(hdev);
if (IS_ERR(skb)) {
ret = PTR_ERR(skb);
@@ -723,14 +1002,14 @@ struct btrtl_device_info *btrtl_initialize(struct hci_dev *hdev,
}
resp = (struct hci_rp_read_local_version *)skb->data;
- rtl_dev_info(hdev, "examining hci_ver=%02x hci_rev=%04x lmp_ver=%02x lmp_subver=%04x",
- resp->hci_ver, resp->hci_rev,
- resp->lmp_ver, resp->lmp_subver);
- hci_ver = resp->hci_ver;
- hci_rev = le16_to_cpu(resp->hci_rev);
+ hci_ver = resp->hci_ver;
+ hci_rev = le16_to_cpu(resp->hci_rev);
+ lmp_ver = resp->lmp_ver;
lmp_subver = le16_to_cpu(resp->lmp_subver);
+ kfree_skb(skb);
+
if (rtl_has_chip_type(lmp_subver)) {
ret = rtl_read_chip_type(hdev, &chip_type);
if (ret)
@@ -740,8 +1019,15 @@ struct btrtl_device_info *btrtl_initialize(struct hci_dev *hdev,
btrtl_dev->ic_info = btrtl_match_ic(lmp_subver, hci_rev, hci_ver,
hdev->bus, chip_type);
- if (!btrtl_dev->ic_info)
+next:
+ rtl_dev_info(hdev, "examining hci_ver=%02x hci_rev=%04x lmp_ver=%02x lmp_subver=%04x",
+ hci_ver, hci_rev,
+ lmp_ver, lmp_subver);
+
+ if (!btrtl_dev->ic_info && !btrtl_dev->drop_fw)
btrtl_dev->drop_fw = true;
+ else
+ btrtl_dev->drop_fw = false;
if (btrtl_dev->drop_fw) {
opcode = hci_opcode_pack(0x3f, 0x66);
@@ -750,41 +1036,25 @@ struct btrtl_device_info *btrtl_initialize(struct hci_dev *hdev,
skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
if (!skb)
- goto out_free;
+ goto err_free;
skb_put_data(skb, cmd, sizeof(cmd));
hci_skb_pkt_type(skb) = HCI_COMMAND_PKT;
- hdev->send(hdev, skb);
+ ret = hdev->send(hdev, skb);
+ if (ret < 0) {
+ bt_dev_err(hdev, "sending frame failed (%d)", ret);
+ kfree_skb(skb);
+ goto err_free;
+ }
/* Ensure the above vendor command is sent to controller and
* process has done.
*/
msleep(200);
- /* Read the local version again. Expect to have the vanilla
- * version as cold boot.
- */
- skb = btrtl_read_local_version(hdev);
- if (IS_ERR(skb)) {
- ret = PTR_ERR(skb);
- goto err_free;
- }
-
- resp = (struct hci_rp_read_local_version *)skb->data;
- rtl_dev_info(hdev, "examining hci_ver=%02x hci_rev=%04x lmp_ver=%02x lmp_subver=%04x",
- resp->hci_ver, resp->hci_rev,
- resp->lmp_ver, resp->lmp_subver);
-
- hci_ver = resp->hci_ver;
- hci_rev = le16_to_cpu(resp->hci_rev);
- lmp_subver = le16_to_cpu(resp->lmp_subver);
-
- btrtl_dev->ic_info = btrtl_match_ic(lmp_subver, hci_rev, hci_ver,
- hdev->bus, chip_type);
+ goto check_version;
}
-out_free:
- kfree_skb(skb);
if (!btrtl_dev->ic_info) {
rtl_dev_info(hdev, "unknown IC info, lmp subver %04x, hci rev %04x, hci ver %04x",
diff --git a/drivers/bluetooth/btrtl.h b/drivers/bluetooth/btrtl.h
index 349d72ee571b..adb4c2c9abc5 100644
--- a/drivers/bluetooth/btrtl.h
+++ b/drivers/bluetooth/btrtl.h
@@ -49,7 +49,58 @@ struct rtl_vendor_config_entry {
struct rtl_vendor_config {
__le32 signature;
__le16 total_len;
- struct rtl_vendor_config_entry entry[];
+ __u8 entry[];
+} __packed;
+
+struct rtl_epatch_header_v2 {
+ __u8 signature[8];
+ __u8 fw_version[8];
+ __le32 num_sections;
+} __packed;
+
+struct rtl_section {
+ __le32 opcode;
+ __le32 len;
+ u8 data[];
+} __packed;
+
+struct rtl_section_hdr {
+ __le16 num;
+ __le16 reserved;
+} __packed;
+
+struct rtl_common_subsec {
+ __u8 eco;
+ __u8 prio;
+ __u8 cb[2];
+ __le32 len;
+ __u8 data[];
+};
+
+struct rtl_sec_hdr {
+ __u8 eco;
+ __u8 prio;
+ __u8 key_id;
+ __u8 reserved;
+ __le32 len;
+ __u8 data[];
+} __packed;
+
+struct rtl_subsection {
+ struct list_head list;
+ u32 opcode;
+ u32 len;
+ u8 prio;
+ u8 *data;
+};
+
+struct rtl_iovec {
+ u8 *data;
+ u32 len;
+};
+
+struct rtl_vendor_cmd {
+ __u8 param[5];
} __packed;
enum {
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