Hi!
> > The TODO file says:
> >
> > # > +
> > # > + skb_queue_tail(&info->txq, fw_skb);
> > # > + spin_lock_irqsave(&info->lock, flags);
> > # > + hci_h4p_outb(info, UART_IER, hci_h4p_inb(info, UART_IER) |
> > # > + UART_IER_THRI);
> > # > + spin_unlock_irqrestore(&info->lock, flags);
> > # > +}
> > #
> > # and as I explained before, this crazy can not continue. Bluetooth drivers
> > can provide a
> > # +hdev->setup callback for loading firmware and doing other setup details.
> > You can just
> > # +bring up the HCI transport. We are providing __hci_cmd_sync for easy
> > loading of the
> > # +firmware. Especially if the firmware just consists of HCI commands.
> > Which is clearly the
> > # +case with the Nokia firmware files.
> >
> > ...so I take it you (and thus TODO) were wrong and __hci_cmd_sync is
> > not suitable after all?
>
> __hci_cmd_sync is to be used in hdev->setup where you load the firmware.
> However when hdev->setup is run, we expect that the HCI transport is fully up
> and running and that the driver takes care of the transport. That is done via
> hdev->send and hci_recv_frame.
>
h4p changes uart speed again after load of the firmware, but I guess
that's ok.
> > But I don't understand what you want me to do at this point. I guess
> > skb_queue_tail+hci_h4p_outb should be moved to a helper function
> > (that's easy), and I already moved initialization to hci_setup().
> >
> > nokia_core.c uses test_bit(HCI_RUNNING, &info->hdev->flags) to tell
> > between initialization and data traffic, but I guess that's fine?
>
> I have no idea on how much more I can explain this. There should be code in
> the driver that handles the HCI transport. That means init of the transport
> and sending and receiving HCI frames. And then there is the piece to load the
> firmware etc. These are two independent things.
>
Ok, it looks like __hci_cmd_sync() is indeed good match for the
firmware load.
>
> What needs to be done is the bring up of the device including the proper UART
> settings and speed and then just run the firmware downloads. All firmware
> files on the Nokia devices where just HCI commands with vendor specific
> details. Some from CSR, some from Broadcom and some from TI. You can actually
> decode them if you really want to. Shouldn't be that hard.
>
Speed changes at the end of firmware load, but I guess that's detail?
Anyway, patch would look like this.
diff --git a/drivers/staging/nokia_h4p/nokia_core.c
b/drivers/staging/nokia_h4p/nokia_core.c
index 9ece2c8..5cdb86a 100644
--- a/drivers/staging/nokia_h4p/nokia_core.c
+++ b/drivers/staging/nokia_h4p/nokia_core.c
@@ -475,12 +475,6 @@ static inline void hci_h4p_recv_frame(struct hci_h4p_info
*info,
info->rx_state = WAIT_FOR_PKT_TYPE;
return;
}
-
- if (!test_bit(HCI_UP, &info->hdev->flags)) {
- BT_DBG("fw_event");
- hci_h4p_parse_fw_event(info, skb);
- return;
- }
}
hci_recv_frame(info->hdev, skb);
diff --git a/drivers/staging/nokia_h4p/nokia_fw-bcm.c
b/drivers/staging/nokia_h4p/nokia_fw-bcm.c
index 8066b21..89718d4 100644
--- a/drivers/staging/nokia_h4p/nokia_fw-bcm.c
+++ b/drivers/staging/nokia_h4p/nokia_fw-bcm.c
@@ -45,84 +45,17 @@ static int hci_h4p_bcm_set_bdaddr(struct hci_h4p_info *info,
return 0;
}
-void hci_h4p_bcm_parse_fw_event(struct hci_h4p_info *info, struct sk_buff *skb)
-{
- struct sk_buff *fw_skb;
- int err;
- unsigned long flags;
-
- if (skb->data[5] != 0x00) {
- dev_err(info->dev, "Firmware sending command failed 0x%.2x\n",
- skb->data[5]);
- info->fw_error = -EPROTO;
- }
-
- kfree_skb(skb);
-
- fw_skb = skb_dequeue(info->fw_q);
- if (fw_skb == NULL || info->fw_error) {
- complete(&info->fw_completion);
- return;
- }
-
- if (fw_skb->data[1] == 0x01 && fw_skb->data[2] == 0xfc &&
- fw_skb->len >= 10) {
- BT_DBG("Setting bluetooth address");
- err = hci_h4p_bcm_set_bdaddr(info, fw_skb);
- if (err < 0) {
- kfree_skb(fw_skb);
- info->fw_error = err;
- complete(&info->fw_completion);
- return;
- }
- }
-
- hci_h4p_simple_send_frame(info, fw_skb);
-}
-
-
int hci_h4p_bcm_send_fw(struct hci_h4p_info *info,
struct sk_buff_head *fw_queue)
{
- struct sk_buff *skb;
- unsigned long flags, time;
+ unsigned long time;
info->fw_error = 0;
- BT_DBG("Sending firmware");
+ printk("Sending firmware (not really)\n");
time = jiffies;
-
- info->fw_q = fw_queue;
- skb = skb_dequeue(fw_queue);
- if (!skb)
- return -ENODATA;
-
- BT_DBG("Sending commands");
-
- /*
- * Disable smart-idle as UART TX interrupts
- * are not wake-up capable
- */
- hci_h4p_smart_idle(info, 0);
-
- /* Check if this is bd_address packet */
- init_completion(&info->fw_completion);
-
- hci_h4p_simple_send_frame(info, skb);
-
- if (!wait_for_completion_timeout(&info->fw_completion,
- msecs_to_jiffies(2000))) {
- dev_err(info->dev, "No reply to fw command\n");
- return -ETIMEDOUT;
- }
-
- if (info->fw_error) {
- dev_err(info->dev, "FW error\n");
- return -EPROTO;
- }
-
- BT_DBG("Firmware sent in %d msecs",
+ printk("Firmware sent in %d msec\n",
jiffies_to_msecs(jiffies-time));
hci_h4p_set_auto_ctsrts(info, 0, UART_EFR_RTS);
diff --git a/drivers/staging/nokia_h4p/nokia_fw.c
b/drivers/staging/nokia_h4p/nokia_fw.c
index b5748c8..be5f619 100644
--- a/drivers/staging/nokia_h4p/nokia_fw.c
+++ b/drivers/staging/nokia_h4p/nokia_fw.c
@@ -76,6 +72,7 @@ static int hci_h4p_read_fw_cmd(struct hci_h4p_info *info,
struct sk_buff **skb,
const struct firmware *fw_entry, gfp_t how)
{
unsigned int cmd_len;
+ static int num = 0;
if (fw_pos >= fw_entry->size)
return 0;
@@ -95,16 +92,24 @@ static int hci_h4p_read_fw_cmd(struct hci_h4p_info *info,
struct sk_buff **skb,
return -EMSGSIZE;
}
- *skb = bt_skb_alloc(cmd_len, how);
- if (!*skb) {
- dev_err(info->dev, "Cannot reserve memory for buffer\n");
- return -ENOMEM;
+ /* Note that this is timing-critical. If sending packets takes too
+ long, initialization will fail. */
+ printk("Packet %d...", num);
+ if (num > 1) {
+ int cmd = fw_entry->data[fw_pos+1] + (fw_entry->data[fw_pos+2]
<< 8);
+ int len = fw_entry->data[fw_pos+3];
+ printk("cmd %x, len %d.", cmd, len);
+ *skb = __hci_cmd_sync(info->hdev, cmd, len,
fw_entry->data+fw_pos+4, 500);
+ if (IS_ERR(*skb)) {
+ printk("...sending cmd failed %d\n", PTR_ERR(*skb));
+ return -EIO;
+ }
}
- memcpy(skb_put(*skb, cmd_len), &fw_entry->data[fw_pos], cmd_len);
+ num++;
fw_pos += cmd_len;
- return (*skb)->len;
+ return 1;
}
int hci_h4p_read_fw(struct hci_h4p_info *info, struct sk_buff_head *fw_queue)
@@ -113,31 +118,22 @@ int hci_h4p_read_fw(struct hci_h4p_info *info, struct
sk_buff_head *fw_queue)
struct sk_buff *skb = NULL;
int err;
+ /*
+ * Disable smart-idle as UART TX interrupts
+ * are not wake-up capable
+ */
+ hci_h4p_smart_idle(info, 0);
+
err = hci_h4p_open_firmware(info, &fw_entry);
if (err < 0 || !fw_entry)
goto err_clean;
+ printk("read firmware\n");
+ /* FIXME: remove skb... */
while ((err = hci_h4p_read_fw_cmd(info, &skb, fw_entry, GFP_KERNEL))) {
- if (err < 0 || !skb)
- goto err_clean;
-
- skb_queue_tail(fw_queue, skb);
}
- /* Chip detection code does neg and alive stuff
- * discard two first skbs */
- skb = skb_dequeue(fw_queue);
- if (!skb) {
- err = -EMSGSIZE;
- goto err_clean;
- }
- kfree_skb(skb);
- skb = skb_dequeue(fw_queue);
- if (!skb) {
- err = -EMSGSIZE;
- goto err_clean;
- }
- kfree_skb(skb);
+ printk("done read firmware\n");
err_clean:
hci_h4p_close_firmware(fw_entry);
@@ -160,20 +156,4 @@ int hci_h4p_send_fw(struct hci_h4p_info *info, struct
sk_buff_head *fw_queue)
return err;
}
-void hci_h4p_parse_fw_event(struct hci_h4p_info *info, struct sk_buff *skb)
-{
- switch (info->man_id) {
- case H4P_ID_BCM2048:
- hci_h4p_bcm_parse_fw_event(info, skb);
- break;
- default:
- dev_err(info->dev, "Don't know how to parse fw event\n");
- info->fw_error = -EINVAL;
- }
-}
-
-MODULE_FIRMWARE(FW_NAME_TI1271_PRELE);
-MODULE_FIRMWARE(FW_NAME_TI1271_LE);
-MODULE_FIRMWARE(FW_NAME_TI1271);
MODULE_FIRMWARE(FW_NAME_BCM2048);
-MODULE_FIRMWARE(FW_NAME_CSR);
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures)
http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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