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Use background transfers for usb_keyboard

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This commit is contained in:
Vladimir 'phcoder' Serbinenko 2010-08-21 17:12:51 +02:00
parent 3ee4474e8d
commit e959937cfd
4 changed files with 127 additions and 22 deletions
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97
bus/usb/usbtrans.c
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@ -195,29 +195,27 @@ grub_usb_control_msg (grub_usb_device_t dev,
return err;
}
static grub_usb_err_t
grub_usb_bulk_readwrite (grub_usb_device_t dev,
int endpoint, grub_size_t size0, char *data_in,
grub_transfer_type_t type, int timeout,
grub_size_t *actual)
static grub_usb_transfer_t
grub_usb_bulk_setup_readwrite (grub_usb_device_t dev,
int endpoint, grub_size_t size0, char *data_in,
grub_transfer_type_t type)
{
int i;
grub_usb_transfer_t transfer;
int datablocks;
unsigned int max;
grub_usb_err_t err;
int toggle = dev->toggle[endpoint];
volatile char *data;
grub_uint32_t data_addr;
struct grub_pci_dma_chunk *data_chunk;
grub_size_t size = size0;
int toggle = dev->toggle[endpoint];
grub_dprintf ("usb", "bulk: size=0x%02x type=%d\n", size, type);
/* FIXME: avoid allocation any kind of buffer in a first place. */
data_chunk = grub_memalign_dma32 (128, size);
if (!data_chunk)
return GRUB_USB_ERR_INTERNAL;
return NULL;
data = grub_dma_get_virt (data_chunk);
data_addr = grub_dma_get_phys (data_chunk);
if (type == GRUB_USB_TRANSFER_TYPE_OUT)
@ -242,7 +240,7 @@ grub_usb_bulk_readwrite (grub_usb_device_t dev,
if (! transfer)
{
grub_dma_free (data_chunk);
return GRUB_USB_ERR_INTERNAL;
return NULL;
}
datablocks = ((size + max - 1) / max);
@ -251,9 +249,12 @@ grub_usb_bulk_readwrite (grub_usb_device_t dev,
transfer->endpoint = endpoint & 15;
transfer->devaddr = dev->addr;
transfer->type = GRUB_USB_TRANSACTION_TYPE_BULK;
transfer->dir = type;
transfer->max = max;
transfer->dev = dev;
transfer->last_trans = -1; /* Reset index of last processed transaction (TD) */
transfer->data_chunk = data_chunk;
transfer->data = data_in;
/* Allocate an array of transfer data structures. */
transfer->transactions = grub_malloc (transfer->transcnt
@ -262,7 +263,7 @@ grub_usb_bulk_readwrite (grub_usb_device_t dev,
{
grub_free (transfer);
grub_dma_free (data_chunk);
return GRUB_USB_ERR_INTERNAL;
return NULL;
}
/* Set up all transfers. */
@ -280,24 +281,51 @@ grub_usb_bulk_readwrite (grub_usb_device_t dev,
tr->preceding = i * max;
size -= tr->size;
}
return transfer;
}
static void
grub_usb_bulk_finish_readwrite (grub_usb_transfer_t transfer)
{
grub_usb_device_t dev = transfer->dev;
int toggle = dev->toggle[transfer->endpoint];
err = grub_usb_execute_and_wait_transfer (dev, transfer, timeout, actual);
/* We must remember proper toggle value even if some transactions
* were not processed - correct value should be inversion of last
* processed transaction (TD). */
if (transfer->last_trans >= 0)
toggle = transfer->transactions[transfer->last_trans].toggle ? 0 : 1;
else
toggle = dev->toggle[endpoint]; /* Nothing done, take original */
grub_dprintf ("usb", "bulk: err=%d, toggle=%d\n", err, toggle);
dev->toggle[endpoint] = toggle;
toggle = dev->toggle[transfer->endpoint]; /* Nothing done, take original */
grub_dprintf ("usb", "bulk: toggle=%d\n", toggle);
dev->toggle[transfer->endpoint] = toggle;
if (transfer->dir == GRUB_USB_TRANSFER_TYPE_IN)
grub_memcpy (transfer->data, (void *)
grub_dma_get_virt (transfer->data_chunk),
transfer->size + 1);
grub_free (transfer->transactions);
grub_free (transfer);
grub_dma_free (data_chunk);
grub_dma_free (transfer->data_chunk);
}
if (type == GRUB_USB_TRANSFER_TYPE_IN)
grub_memcpy (data_in, (char *) data, size0);
static grub_usb_err_t
grub_usb_bulk_readwrite (grub_usb_device_t dev,
int endpoint, grub_size_t size0, char *data_in,
grub_transfer_type_t type, int timeout,
grub_size_t *actual)
{
grub_usb_err_t err;
grub_usb_transfer_t transfer;
transfer = grub_usb_bulk_setup_readwrite (dev, endpoint, size0,
data_in, type);
if (!transfer)
return GRUB_USB_ERR_INTERNAL;
err = grub_usb_execute_and_wait_transfer (dev, transfer, timeout, actual);
grub_usb_bulk_finish_readwrite (transfer);
return err;
}
@ -329,6 +357,41 @@ grub_usb_bulk_read (grub_usb_device_t dev,
return err;
}
grub_usb_err_t
grub_usb_check_transfer (grub_usb_transfer_t transfer, grub_size_t *actual)
{
grub_usb_err_t err;
grub_usb_device_t dev = transfer->dev;
err = dev->controller.dev->check_transfer (&dev->controller, transfer,
actual);
if (err == GRUB_USB_ERR_WAIT)
return err;
grub_usb_bulk_finish_readwrite (transfer);
return err;
}
grub_usb_transfer_t
grub_usb_bulk_read_background (grub_usb_device_t dev,
int endpoint, grub_size_t size, void *data)
{
grub_usb_err_t err;
grub_usb_transfer_t transfer;
transfer = grub_usb_bulk_setup_readwrite (dev, endpoint, size,
data, GRUB_USB_TRANSFER_TYPE_IN);
if (!transfer)
return NULL;
err = dev->controller.dev->setup_transfer (&dev->controller, transfer);
if (err)
return NULL;
return transfer;
}
grub_usb_err_t
grub_usb_bulk_read_extended (grub_usb_device_t dev,
int endpoint, grub_size_t size, char *data,