len0rd/rockbox
1
0
Fork 1
mirror of https://github.com/Rockbox/rockbox.git synced 2025-12-09 05:05:20 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions

Ingenic Jz4740: eliminate EP0 state machine + small cleanups

Browse source 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25797 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Maurus Cuelenaere 2010-05-03 20:36:34 +00:00
parent 35f341464b
commit 056f608f78
1 changed files with 34 additions and 67 deletions
Download patch file Download diff file Expand all files Collapse all files

101
firmware/target/mips/ingenic_jz47xx/usb-jz4740.c
View file

@ -36,13 +36,6 @@
up to 15 endpoints (the Jz4740 only has 5).
*/
enum
{
USB_EP0_IDLE,
USB_EP0_RX,
USB_EP0_TX
};
#define EP_BUF_LEFT(ep) ((ep)->length - (ep)->sent)
#define EP_PTR(ep) ((void*)((unsigned int)(ep)->buf + (ep)->sent))
#define EP_NUMBER(ep) (((int)(ep) - (int)&endpoints[0])/sizeof(struct usb_endpoint))
@ -61,30 +54,29 @@ enum ep_type
struct usb_endpoint
{
void *buf;
unsigned int length;
size_t length;
union
{
unsigned int sent;
unsigned int received;
size_t sent;
size_t received;
};
bool busy;
const enum ep_type type;
const bool use_dma;
bool wait;
const unsigned int fifo_addr;
const long fifo_addr;
unsigned short fifo_size;
bool wait;
struct wakeup wakeup;
};
static unsigned char ep0_rx_buf[64];
static unsigned char ep0state = USB_EP0_IDLE;
static struct usb_endpoint endpoints[] =
{
{ .type = ep_control, .fifo_addr = USB_FIFO_EP0, .fifo_size = 64 },
{ .type = ep_control, .fifo_addr = USB_FIFO_EP0, .fifo_size = 64, .buf = &ep0_rx_buf },
{ .type = ep_control, .fifo_addr = USB_FIFO_EP0, .buf = &ep0_rx_buf },
{ .type = ep_bulk, .fifo_addr = USB_FIFO_EP1, .fifo_size = 512 },
{ .type = ep_bulk, .fifo_addr = USB_FIFO_EP1, .fifo_size = 512 },
{ .type = ep_interrupt, .fifo_addr = USB_FIFO_EP2, .fifo_size = 64 },
@ -172,6 +164,16 @@ static void flushFIFO(struct usb_endpoint *ep)
}
}
static inline void ep_transfer_completed(struct usb_endpoint* ep)
{
ep->sent = 0;
ep->length = 0;
ep->buf = NULL;
ep->busy = false;
if(ep->wait)
wakeup_signal(&ep->wakeup);
}
static void EP0_send(void)
{
struct usb_endpoint* ep = &endpoints[0];
@ -181,13 +183,6 @@ static void EP0_send(void)
select_endpoint(0);
csr0 = REG_USB_REG_CSR0;
if(ep->length == 0)
{
//REG_USB_REG_CSR0 = (csr0 | USB_CSR0_SVDOUTPKTRDY | USB_CSR0_DATAEND);
REG_USB_REG_CSR0 = (csr0 | USB_CSR0_SVDOUTPKTRDY);
return;
}
if(ep->sent == 0)
length = MIN(ep->length, ep->fifo_size);
else
@ -199,9 +194,8 @@ static void EP0_send(void)
if(ep->sent >= ep->length)
{
REG_USB_REG_CSR0 = (csr0 | USB_CSR0_INPKTRDY | USB_CSR0_DATAEND); /* Set data end! */
ep0state = USB_EP0_IDLE;
if(ep->wait)
wakeup_signal(&ep->wakeup);
usb_core_transfer_complete(0, USB_DIR_IN, 0, ep->sent);
ep_transfer_completed(ep);
}
else
REG_USB_REG_CSR0 = (csr0 | USB_CSR0_INPKTRDY);
@ -212,6 +206,8 @@ static void EP0_handler(void)
logf("%s()", __func__);
unsigned char csr0;
struct usb_endpoint *ep_send = &endpoints[0];
struct usb_endpoint *ep_recv = &endpoints[1];
/* Read CSR0 */
select_endpoint(0);
@ -223,7 +219,6 @@ static void EP0_handler(void)
if(csr0 & USB_CSR0_SENTSTALL)
{
REG_USB_REG_CSR0 = csr0 & ~USB_CSR0_SENTSTALL;
ep0state = USB_EP0_IDLE;
return;
}
@ -235,24 +230,18 @@ static void EP0_handler(void)
if(csr0 & USB_CSR0_SETUPEND)
{
REG_USB_REG_CSR0 = csr0 | USB_CSR0_SVDSETUPEND;
ep0state = USB_EP0_IDLE;
return;
}
/* Call relevant routines for endpoint 0 state */
if(ep0state == USB_EP0_IDLE)
{
if(csr0 & USB_CSR0_OUTPKTRDY) /* There is a packet in the fifo */
{
readFIFO(&endpoints[1], REG_USB_REG_COUNT0);
REG_USB_REG_CSR0 = csr0 | USB_CSR0_SVDOUTPKTRDY; /* clear OUTPKTRDY bit */
usb_core_control_request((struct usb_ctrlrequest*)endpoints[1].buf);
if(endpoints[1].wait)
wakeup_signal(&endpoints[1].wakeup);
}
}
else if(ep0state == USB_EP0_TX)
if(ep_send->busy)
EP0_send();
else if(csr0 & USB_CSR0_OUTPKTRDY) /* There is a packet in the fifo */
{
readFIFO(ep_recv, REG_USB_REG_COUNT0);
REG_USB_REG_CSR0 = csr0 | USB_CSR0_SVDOUTPKTRDY; /* clear OUTPKTRDY bit */
usb_core_control_request((struct usb_ctrlrequest*)ep_recv->buf);
}
}
static void EPIN_handler(unsigned int endpoint)
@ -299,13 +288,8 @@ static void EPIN_handler(unsigned int endpoint)
if(ep->sent >= ep->length)
{
usb_core_transfer_complete(endpoint, USB_DIR_IN, 0, ep->sent);
if(ep->wait)
wakeup_signal(&ep->wakeup);
ep_transfer_completed(ep);
logf("sent complete");
ep->sent = 0;
ep->length = 0;
ep->buf = NULL;
ep->busy = false;
}
}
@ -352,13 +336,8 @@ static void EPOUT_handler(unsigned int endpoint)
if(size < ep->fifo_size || ep->received >= ep->length)
{
usb_core_transfer_complete(endpoint, USB_DIR_OUT, 0, ep->received);
if(ep->wait)
wakeup_signal(&ep->wakeup);
ep_transfer_completed(ep);
logf("receive transfer_complete");
ep->received = 0;
ep->length = 0;
ep->buf = NULL;
ep->busy = false;
}
}
}
@ -407,13 +386,7 @@ static void EPDMA_handler(int number)
usb_core_transfer_complete(endpoint, EP_IS_IN(ep) ? USB_DIR_IN : USB_DIR_OUT,
0, ep->length);
ep->busy = false;
ep->sent = 0;
ep->length = 0;
ep->buf = NULL;
if(ep->wait)
wakeup_signal(&ep->wakeup);
ep_transfer_completed(ep);
}
static void setup_endpoint(struct usb_endpoint *ep)
@ -486,9 +459,6 @@ static void udc_reset(void)
unsigned int i;
/* EP0 init */
ep0state = USB_EP0_IDLE;
/* Disable interrupts */
REG_USB_REG_INTRINE = 0;
REG_USB_REG_INTROUTE = 0;
@ -710,7 +680,7 @@ void usb_drv_set_address(int address)
static void usb_drv_send_internal(struct usb_endpoint* ep, void* ptr, int length, bool blocking)
{
if(ep->type == ep_control && ptr == NULL && length == 0)
return; /* ACK request, handled by the USB controller */
return; /* ACK request, handled in the ISR */
int flags = disable_irq_save();
@ -723,7 +693,6 @@ static void usb_drv_send_internal(struct usb_endpoint* ep, void* ptr, int length
if(ep->type == ep_control)
{
ep0state = USB_EP0_TX;
EP0_send();
}
else
@ -777,8 +746,8 @@ int usb_drv_recv(int endpoint, void* ptr, int length)
logf("%s(%d, 0x%x, %d)", __func__, endpoint, (int)ptr, length);
if(endpoint == EP_CONTROL && ptr == NULL && length == 0)
return 0; /* ACK request, handled by the USB controller */
if(endpoint == EP_CONTROL)
return 0; /* all EP0 OUT transactions are handled within the ISR */
else
{
flags = disable_irq_save();
@ -844,7 +813,7 @@ void usb_drv_cancel_all_transfers(void)
for(i=0; i<TOTAL_EP(); i++)
{
if(i >= 2)
if(i != 1) /* ep0 out needs special handling */
endpoints[i].buf = NULL;
endpoints[i].sent = 0;
@ -854,8 +823,6 @@ void usb_drv_cancel_all_transfers(void)
flushFIFO(&endpoints[i]);
}
restore_irq(flags);
ep0state = USB_EP0_IDLE;
}
void usb_drv_release_endpoint(int ep)