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usbdebug: Move initialisation of the optional hub 

Add new file for device-specific initialisation transactions.

Change-Id: I339df400a41675f178c7af613f03b2b44c826189
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/7208
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins)
This commit is contained in:
Kyösti Mälkki 2014-02-25 20:11:52 +02:00
parent 7bb4f86d07
commit 83fe6d7fd2
5 changed files with 155 additions and 105 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
src/drivers/usb/Makefile.inc
View File

@ -1,3 +1,3 @@
romstage-$(CONFIG_USBDEBUG_IN_ROMSTAGE) += ehci_debug.c pci_ehci.c console.c
romstage-$(CONFIG_USBDEBUG_IN_ROMSTAGE) += ehci_debug.c pci_ehci.c console.c gadget.c
ramstage-$(CONFIG_USBDEBUG) += ehci_debug.c pci_ehci.c console.c
ramstage-$(CONFIG_USBDEBUG) += ehci_debug.c pci_ehci.c console.c gadget.c

3
src/drivers/usb/ehci.h
View File

@ -197,4 +197,7 @@ struct ehci_dbg_port {
u32 address;
#define DBGP_EPADDR(dev, ep) (((dev)<<8)|(ep))
} __attribute__ ((packed));
#define USB_DEBUG_DEVNUM 127
#endif

107
src/drivers/usb/ehci_debug.c
View File

@ -53,8 +53,6 @@ static int dbgp_enabled(void);
# define dprintk(LEVEL, args...) do {} while(0)
#endif
#define USB_DEBUG_DEVNUM 127
#define DBGP_LEN_UPDATE(x, len) (((x) & ~0x0f) | ((len) & 0x0f))
/*
* USB Packet IDs (PIDs)
@ -319,7 +317,7 @@ int dbgp_bulk_read_x(struct dbgp_pipe *pipe, void *data, int size)
return dbgp_bulk_read(dbg_info->ehci_debug, pipe, data, size);
}
static void dbgp_mdelay(int ms)
void dbgp_mdelay(int ms)
{
int i;
@ -329,7 +327,7 @@ static void dbgp_mdelay(int ms)
}
}
static int dbgp_control_msg(struct ehci_dbg_port *ehci_debug, unsigned devnum, int requesttype,
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();
@ -460,101 +458,6 @@ static int ehci_wait_for_port(struct ehci_regs *ehci_regs, int port)
return -1; //-ENOTCONN;
}
#define USB_HUB_PORT_CONNECTION 0
#define USB_HUB_PORT_ENABLED 1
#define USB_HUB_PORT_RESET 4
#define USB_HUB_PORT_POWER 8
#define USB_HUB_C_PORT_CONNECTION 16
#define USB_HUB_C_PORT_RESET 20
#if CONFIG_USBDEBUG_OPTIONAL_HUB_PORT
static int hub_port_status(const char * buf, int feature)
{
return !!(buf[feature>>3] & (1<<(feature&0x7)));
}
static int dbgp_hub_enable(struct ehci_dbg_port *ehci_debug, unsigned int port)
{
const u8 hub_addr = USB_DEBUG_DEVNUM-1;
char status[8];
int ret, loop;
/* Move hub to address 126. */
ret = dbgp_control_msg(ehci_debug, 0,
USB_DIR_OUT | USB_TYPE_STANDARD | USB_RECIP_DEVICE,
USB_REQ_SET_ADDRESS, hub_addr, 0, NULL, 0);
if (ret < 0)
goto err;
/* Enter configured state on hub. */
ret = dbgp_control_msg(ehci_debug, hub_addr,
USB_DIR_OUT | USB_TYPE_STANDARD | USB_RECIP_DEVICE,
USB_REQ_SET_CONFIGURATION, 1, 0, NULL, 0);
if (ret < 0)
goto err;
/* Set PORT_POWER, poll for PORT_CONNECTION. */
ret = dbgp_control_msg(ehci_debug, hub_addr,
USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_OTHER,
USB_REQ_SET_FEATURE, USB_HUB_PORT_POWER, port, NULL, 0);
if (ret < 0)
goto err;
loop = 100;
do {
dbgp_mdelay(10);
ret = dbgp_control_msg(ehci_debug, hub_addr,
USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_OTHER,
USB_REQ_GET_STATUS, 0, port, status, 4);
if (ret < 0)
goto err;
if (hub_port_status(status, USB_HUB_PORT_CONNECTION))
break;
} while (--loop);
if (! loop)
goto err;
ret = dbgp_control_msg(ehci_debug, hub_addr,
USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_OTHER,
USB_REQ_CLEAR_FEATURE, USB_HUB_C_PORT_CONNECTION, port, NULL, 0);
if (ret < 0)
goto err;
/* Set PORT_RESET, poll for C_PORT_RESET. */
ret = dbgp_control_msg(ehci_debug, hub_addr,
USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_OTHER,
USB_REQ_SET_FEATURE, USB_HUB_PORT_RESET, port, NULL, 0);
if (ret < 0)
goto err;
loop = 100;
do {
dbgp_mdelay(10);
ret = dbgp_control_msg(ehci_debug, hub_addr,
USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_OTHER,
USB_REQ_GET_STATUS, 0, port, status, 4);
if (ret < 0)
goto err;
if (hub_port_status(status, USB_HUB_C_PORT_RESET))
break;
} while (--loop);
if (! loop)
goto err;
ret = dbgp_control_msg(ehci_debug, hub_addr,
USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_OTHER,
USB_REQ_CLEAR_FEATURE, USB_HUB_C_PORT_RESET, port, NULL, 0);
if (ret < 0)
goto err;
if (hub_port_status(status, USB_HUB_PORT_ENABLED))
return 0;
err:
return -1;
}
#endif /* CONFIG_USBDEBUG_OPTIONAL_HUB_PORT */
static int usbdebug_init_(unsigned ehci_bar, unsigned offset, struct ehci_debug_info *info)
@ -705,14 +608,12 @@ try_next_port:
dbgp_mdelay(100);
#if CONFIG_USBDEBUG_OPTIONAL_HUB_PORT
ret = dbgp_hub_enable(ehci_debug, CONFIG_USBDEBUG_OPTIONAL_HUB_PORT);
ret = dbgp_probe_gadget(info->ehci_debug, &info->ep_pipe[0]);
if (ret < 0) {
dprintk(BIOS_INFO, "Could not enable USB hub on debug port.\n");
dprintk(BIOS_INFO, "Could not probe gadget on debug port.\n");
ret = -6;
goto err;
}
#endif
/* Find the debug device and make it device number 127 */
devnum = 0;

8
src/drivers/usb/ehci_debug.h
View File

@ -37,6 +37,8 @@ void ehci_debug_select_port(unsigned int port);
#define DBGP_EP_BUSY (1<<2)
#define DBGP_EP_STATMASK (DBGP_EP_VALID | DBGP_EP_ENABLED)
struct ehci_dbg_port;
struct dbgp_pipe
{
u8 devnum;
@ -59,4 +61,10 @@ int dbgp_ep_is_active(struct dbgp_pipe *pipe);
int dbgp_bulk_write_x(struct dbgp_pipe *pipe, const char *bytes, int size);
int dbgp_bulk_read_x(struct dbgp_pipe *pipe, void *data, int size);
int dbgp_control_msg(struct ehci_dbg_port *ehci_debug, unsigned devnum,
int requesttype, int request, int value, int index, void *data, int size);
void dbgp_mdelay(int ms);
int dbgp_probe_gadget(struct ehci_dbg_port *ehci_debug, struct dbgp_pipe *pipe);
#endif /* _EHCI_DEBUG_H_ */

138
src/drivers/usb/gadget.c Normal file
View File

@ -0,0 +1,138 @@
/*
* This file is part of the coreboot project.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA
*/
#include <stddef.h>
#include <console/console.h>
#include "ehci_debug.h"
#include "usb_ch9.h"
#include "ehci.h"
#define USB_HUB_PORT_CONNECTION 0
#define USB_HUB_PORT_ENABLED 1
#define USB_HUB_PORT_RESET 4
#define USB_HUB_PORT_POWER 8
#define USB_HUB_C_PORT_CONNECTION 16
#define USB_HUB_C_PORT_RESET 20
static int hub_port_status(const char * buf, int feature)
{
return !!(buf[feature>>3] & (1<<(feature&0x7)));
}
/* After USB port reset, treat device number 0 as an USB hub. Assign it with
* a device number hub_addr. Then apply enable and reset on downstream port.
*/
static int dbgp_hub_enable(struct ehci_dbg_port *ehci_debug, unsigned char hub_addr,
unsigned char port)
{
char status[8];
int ret, loop;
/* Assign a devicenumber for the hub. */
ret = dbgp_control_msg(ehci_debug, 0,
USB_DIR_OUT | USB_TYPE_STANDARD | USB_RECIP_DEVICE,
USB_REQ_SET_ADDRESS, hub_addr, 0, NULL, 0);
if (ret < 0)
goto err;
/* Enter configured state on hub. */
ret = dbgp_control_msg(ehci_debug, hub_addr,
USB_DIR_OUT | USB_TYPE_STANDARD | USB_RECIP_DEVICE,
USB_REQ_SET_CONFIGURATION, 1, 0, NULL, 0);
if (ret < 0)
goto err;
/* Set PORT_POWER, poll for PORT_CONNECTION. */
ret = dbgp_control_msg(ehci_debug, hub_addr,
USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_OTHER,
USB_REQ_SET_FEATURE, USB_HUB_PORT_POWER, port, NULL, 0);
if (ret < 0)
goto err;
loop = 100;
do {
dbgp_mdelay(10);
ret = dbgp_control_msg(ehci_debug, hub_addr,
USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_OTHER,
USB_REQ_GET_STATUS, 0, port, status, 4);
if (ret < 0)
goto err;
if (hub_port_status(status, USB_HUB_PORT_CONNECTION))
break;
} while (--loop);
if (! loop)
goto err;
ret = dbgp_control_msg(ehci_debug, hub_addr,
USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_OTHER,
USB_REQ_CLEAR_FEATURE, USB_HUB_C_PORT_CONNECTION, port, NULL, 0);
if (ret < 0)
goto err;
/* Set PORT_RESET, poll for C_PORT_RESET. */
ret = dbgp_control_msg(ehci_debug, hub_addr,
USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_OTHER,
USB_REQ_SET_FEATURE, USB_HUB_PORT_RESET, port, NULL, 0);
if (ret < 0)
goto err;
loop = 100;
do {
dbgp_mdelay(10);
ret = dbgp_control_msg(ehci_debug, hub_addr,
USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_OTHER,
USB_REQ_GET_STATUS, 0, port, status, 4);
if (ret < 0)
goto err;
if (hub_port_status(status, USB_HUB_C_PORT_RESET))
break;
} while (--loop);
if (! loop)
goto err;
ret = dbgp_control_msg(ehci_debug, hub_addr,
USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_OTHER,
USB_REQ_CLEAR_FEATURE, USB_HUB_C_PORT_RESET, port, NULL, 0);
if (ret < 0)
goto err;
if (hub_port_status(status, USB_HUB_PORT_ENABLED))
return 0;
err:
return -1;
}
int dbgp_probe_gadget(struct ehci_dbg_port *ehci_debug, struct dbgp_pipe *pipe)
{
int ret;
if (CONFIG_USBDEBUG_OPTIONAL_HUB_PORT != 0) {
ret = dbgp_hub_enable(ehci_debug, USB_DEBUG_DEVNUM-1,
CONFIG_USBDEBUG_OPTIONAL_HUB_PORT);
if (ret < 0) {
printk(BIOS_INFO, "Could not enable USB hub on debug port.\n");
return ret;
}
}
return 0;
}