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usbdebug: Reference endpoints by pipes in calls 

Add allocation for endpoint0 as a pipe for control messages.

Endpoint number was already stored in the pipe object, place devnum
there too, although all pipes will use same devnum==127.

Change-Id: I299d139bdd8083af8b04a694e8e41435ec026a25
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/3864
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@google.com>
This commit is contained in:
Kyösti Mälkki 2013-08-10 10:34:01 +03:00
parent 545b30d151
commit 75d006232a
1 changed files with 29 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

53
src/lib/usbdebug.c
View File

@ -39,6 +39,7 @@
struct dbgp_pipe
{
u8 devnum;
u8 endpoint;
u8 status;
u8 bufidx;
@ -51,8 +52,6 @@ struct dbgp_pipe
#define DBGP_CONSOLE_EPIN 2
struct ehci_debug_info {
u8 devnum;
void *ehci_caps;
void *ehci_regs;
void *ehci_debug;
@ -152,7 +151,8 @@ static void dbgp_breath(void)
/* Sleep to give the debug port a chance to breathe */
}
static int dbgp_wait_until_done(struct ehci_dbg_port *ehci_debug, unsigned ctrl, int loop)
static int dbgp_wait_until_done(struct ehci_dbg_port *ehci_debug, struct dbgp_pipe *pipe,
unsigned ctrl, int loop)
{
u32 pids, lpid;
int ret;
@ -213,8 +213,8 @@ static void dbgp_get_data(struct ehci_dbg_port *ehci_debug, void *buf, int size)
bytes[i] = (hi >> (8*(i - 4))) & 0xff;
}
static int dbgp_bulk_write(struct ehci_dbg_port *ehci_debug,
unsigned devnum, unsigned endpoint, const char *bytes, int size)
static int dbgp_bulk_write(struct ehci_dbg_port *ehci_debug, struct dbgp_pipe *pipe,
const char *bytes, int size)
{
u32 pids, addr, ctrl;
int ret;
@ -222,7 +222,7 @@ static int dbgp_bulk_write(struct ehci_dbg_port *ehci_debug,
if (size > DBGP_MAX_PACKET)
return -1;
addr = DBGP_EPADDR(devnum, endpoint);
addr = DBGP_EPADDR(pipe->devnum, pipe->endpoint);
pids = read32((unsigned long)&ehci_debug->pids);
pids = DBGP_PID_UPDATE(pids, USB_PID_OUT);
@ -236,7 +236,7 @@ static int dbgp_bulk_write(struct ehci_dbg_port *ehci_debug,
write32((unsigned long)&ehci_debug->address, addr);
write32((unsigned long)&ehci_debug->pids, pids);
ret = dbgp_wait_until_done(ehci_debug, ctrl, DBGP_LOOPS);
ret = dbgp_wait_until_done(ehci_debug, pipe, ctrl, DBGP_LOOPS);
return ret;
}
@ -244,12 +244,11 @@ static int dbgp_bulk_write(struct ehci_dbg_port *ehci_debug,
int dbgp_bulk_write_x(struct dbgp_pipe *pipe, const char *bytes, int size)
{
struct ehci_debug_info *dbg_info = dbgp_ehci_info();
return dbgp_bulk_write(dbg_info->ehci_debug, dbg_info->devnum,
pipe->endpoint, bytes, size);
return dbgp_bulk_write(dbg_info->ehci_debug, pipe, bytes, size);
}
static int dbgp_bulk_read(struct ehci_dbg_port *ehci_debug, unsigned devnum,
unsigned endpoint, void *data, int size, int loops)
static int dbgp_bulk_read(struct ehci_dbg_port *ehci_debug, struct dbgp_pipe *pipe,
void *data, int size, int loops)
{
u32 pids, addr, ctrl;
int ret;
@ -257,7 +256,7 @@ static int dbgp_bulk_read(struct ehci_dbg_port *ehci_debug, unsigned devnum,
if (size > DBGP_MAX_PACKET)
return -1;
addr = DBGP_EPADDR(devnum, endpoint);
addr = DBGP_EPADDR(pipe->devnum, pipe->endpoint);
pids = read32((unsigned long)&ehci_debug->pids);
pids = DBGP_PID_UPDATE(pids, USB_PID_IN);
@ -269,7 +268,7 @@ static int dbgp_bulk_read(struct ehci_dbg_port *ehci_debug, unsigned devnum,
write32((unsigned long)&ehci_debug->address, addr);
write32((unsigned long)&ehci_debug->pids, pids);
ret = dbgp_wait_until_done(ehci_debug, ctrl, loops);
ret = dbgp_wait_until_done(ehci_debug, pipe, ctrl, loops);
if (ret < 0)
return ret;
@ -282,8 +281,7 @@ static int dbgp_bulk_read(struct ehci_dbg_port *ehci_debug, unsigned devnum,
int dbgp_bulk_read_x(struct dbgp_pipe *pipe, void *data, int size)
{
struct ehci_debug_info *dbg_info = dbgp_ehci_info();
return dbgp_bulk_read(dbg_info->ehci_debug, dbg_info->devnum,
pipe->endpoint, data, size, DBGP_LOOPS);
return dbgp_bulk_read(dbg_info->ehci_debug, pipe, data, size, DBGP_LOOPS);
}
static void dbgp_mdelay(int ms)
@ -299,6 +297,8 @@ static void dbgp_mdelay(int ms)
static int dbgp_control_msg(struct ehci_dbg_port *ehci_debug, unsigned devnum, int requesttype,
int request, int value, int index, void *data, int size)
{
struct ehci_debug_info *info = dbgp_ehci_info();
struct dbgp_pipe *pipe = &info->ep_pipe[DBGP_SETUP_EP0];
u32 pids, addr, ctrl;
struct usb_ctrlrequest req;
int read;
@ -315,8 +315,10 @@ static int dbgp_control_msg(struct ehci_dbg_port *ehci_debug, unsigned devnum, i
req.wIndex = cpu_to_le16(index);
req.wLength = cpu_to_le16(size);
pipe->devnum = devnum;
pipe->endpoint = 0;
addr = DBGP_EPADDR(pipe->devnum, pipe->endpoint);
pids = DBGP_PID_SET(USB_PID_DATA0, USB_PID_SETUP);
addr = DBGP_EPADDR(devnum, 0);
ctrl = read32((unsigned long)&ehci_debug->control);
ctrl = DBGP_LEN_UPDATE(ctrl, sizeof(req));
@ -327,13 +329,12 @@ static int dbgp_control_msg(struct ehci_dbg_port *ehci_debug, unsigned devnum, i
dbgp_set_data(ehci_debug, &req, sizeof(req));
write32((unsigned long)&ehci_debug->address, addr);
write32((unsigned long)&ehci_debug->pids, pids);
ret = dbgp_wait_until_done(ehci_debug, ctrl, DBGP_LOOPS);
ret = dbgp_wait_until_done(ehci_debug, pipe, ctrl, DBGP_LOOPS);
if (ret < 0)
return ret;
/* Read the result */
ret = dbgp_bulk_read(ehci_debug, devnum, 0, data, size, DBGP_LOOPS);
ret = dbgp_bulk_read(ehci_debug, pipe, data, size, DBGP_LOOPS);
return ret;
}
@ -609,10 +610,17 @@ debug_dev_found:
}
dprintk(BIOS_INFO, "EHCI debug interface enabled.\n");
/* Perform a small write to get the even/odd data state in sync */
/* Prepare endpoint pipes. */
for (i=1; i<DBGP_MAX_ENDPOINTS; i++) {
info->ep_pipe[i].devnum = USB_DEBUG_DEVNUM;
}
info->ep_pipe[DBGP_CONSOLE_EPOUT].endpoint = dbgp_desc.bDebugOutEndpoint;
info->ep_pipe[DBGP_CONSOLE_EPIN].endpoint = dbgp_desc.bDebugInEndpoint;
/* Perform a small write. */
configured = 0;
small_write:
ret = dbgp_bulk_write(ehci_debug, USB_DEBUG_DEVNUM, dbgp_desc.bDebugOutEndpoint, "USB\r\n",5);
ret = dbgp_bulk_write(ehci_debug, &info->ep_pipe[DBGP_CONSOLE_EPOUT], "USB\r\n",5);
if (ret < 0) {
dprintk(BIOS_INFO, "dbgp_bulk_write failed: %d\n", ret);
if (!configured) {
@ -634,10 +642,7 @@ small_write:
info->ehci_caps = ehci_caps;
info->ehci_regs = ehci_regs;
info->ehci_debug = ehci_debug;
info->devnum = devnum;
info->ep_pipe[DBGP_CONSOLE_EPOUT].endpoint = dbgp_desc.bDebugOutEndpoint;
info->ep_pipe[DBGP_CONSOLE_EPIN].endpoint = dbgp_desc.bDebugInEndpoint;
info->ep_pipe[DBGP_SETUP_EP0].status |= DBGP_EP_ENABLED | DBGP_EP_VALID;
info->ep_pipe[DBGP_CONSOLE_EPOUT].status |= DBGP_EP_ENABLED | DBGP_EP_VALID;
info->ep_pipe[DBGP_CONSOLE_EPIN].status |= DBGP_EP_ENABLED | DBGP_EP_VALID;