As DMA expects the buffers to be equal and larger then
cache lines, This aligns buffers at cacheline.
Signed-off-by: Puneet Saxena<pune...@nvidia.com>
---
Changes for V2:
- Use "ARCH_DMA_MINALIGN" directly
- Use "ALIGN" to align size as cacheline
- Removed headers from usb.h
- Send 8 bytes of device descriptor size to read
Max packet size
scsi.h header is needed to avoid extra memcpy from local buffer
to global buffer.
Changes for V3:
- Removed local descriptor elements copy to global descriptor elements
- Removed "Signed-off-by: Jim Lin<ji...@nvidia.com>" from commit
message
common/cmd_usb.c | 3 +-
common/usb.c | 57
++++++++++++++++++++++------------------- common/usb_storage.c |
59 ++++++++++++++++++++---------------------- disk/part_dos.c
| 2 +-
drivers/usb/host/ehci-hcd.c | 8 ++++++
include/scsi.h | 4 ++-
6 files changed, 73 insertions(+), 60 deletions(-)
diff --git a/common/cmd_usb.c b/common/cmd_usb.c
index 320667f..bca9d94 100644
--- a/common/cmd_usb.c
+++ b/common/cmd_usb.c
@@ -150,7 +150,8 @@ void usb_display_class_sub(unsigned char dclass,
unsigned char subclass,
void usb_display_string(struct usb_device *dev, int index)
{
- char buffer[256];
+ ALLOC_CACHE_ALIGN_BUFFER(char, buffer, 256);
+
if (index != 0) {
if (usb_string(dev, index,&buffer[0], 256)> 0)
printf("String: \"%s\"", buffer);
diff --git a/common/usb.c b/common/usb.c
index 63a11c8..191bc5b 100644
--- a/common/usb.c
+++ b/common/usb.c
@@ -73,7 +73,6 @@ static struct usb_device usb_dev[USB_MAX_DEVICE];
static int dev_index;
static int running;
static int asynch_allowed;
-static struct devrequest setup_packet;
char usb_started; /* flag for the started/stopped USB status */
@@ -185,23 +184,25 @@ int usb_control_msg(struct usb_device *dev, unsigned
int pipe, unsigned short value, unsigned short index,
void *data, unsigned short size, int timeout)
{
+ ALLOC_CACHE_ALIGN_BUFFER(struct devrequest, setup_packet,
+ sizeof(struct devrequest));
if ((timeout == 0)&& (!asynch_allowed)) {
/* request for a asynch control pipe is not allowed */
return -1;
}
/* set setup command */
- setup_packet.requesttype = requesttype;
- setup_packet.request = request;
- setup_packet.value = cpu_to_le16(value);
- setup_packet.index = cpu_to_le16(index);
- setup_packet.length = cpu_to_le16(size);
+ setup_packet->requesttype = requesttype;
+ setup_packet->request = request;
+ setup_packet->value = cpu_to_le16(value);
+ setup_packet->index = cpu_to_le16(index);
+ setup_packet->length = cpu_to_le16(size);
USB_PRINTF("usb_control_msg: request: 0x%X, requesttype: 0x%X, " \
"value 0x%X index 0x%X length 0x%X\n",
request, requesttype, value, index, size);
dev->status = USB_ST_NOT_PROC; /*not yet processed */
- submit_control_msg(dev, pipe, data, size,&setup_packet);
+ submit_control_msg(dev, pipe, data, size, setup_packet);
if (timeout == 0)
return (int)size;
@@ -694,7 +695,7 @@ static int usb_string_sub(struct usb_device *dev,
unsigned int langid, */
int usb_string(struct usb_device *dev, int index, char *buf, size_t size)
{
- unsigned char mybuf[USB_BUFSIZ];
+ ALLOC_CACHE_ALIGN_BUFFER(unsigned char, mybuf, USB_BUFSIZ);
unsigned char *tbuf;
int err;
unsigned int u, idx;
@@ -794,7 +795,7 @@ int usb_new_device(struct usb_device *dev)
{
int addr, err;
int tmp;
- unsigned char tmpbuf[USB_BUFSIZ];
+ ALLOC_CACHE_ALIGN_BUFFER(unsigned char, tmpbuf, USB_BUFSIZ);
/* We still haven't set the Address yet */
addr = dev->devnum;
@@ -842,7 +843,10 @@ int usb_new_device(struct usb_device *dev)
dev->epmaxpacketin[0] = 64;
dev->epmaxpacketout[0] = 64;
- err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, desc, 64);
+ desc->bMaxPacketSize0 = 0;
+ /*8 bytes of the descriptor to read Max packet size*/
+ err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, desc,
+ 8);
