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authorKyösti Mälkki <kyosti.malkki@gmail.com>2014-10-27 15:07:20 +0200
committerKyösti Mälkki <kyosti.malkki@gmail.com>2014-11-23 20:34:53 +0100
commit7bb4f86d07934373fa427af3dad17ae59bc89bc9 (patch)
tree3128386ee8a8536595986fa72ad78810cdef943c /src
parent618d179bfefba32e1672a58f2ee9b969cb313130 (diff)
downloadcoreboot-7bb4f86d07934373fa427af3dad17ae59bc89bc9.tar.xz
usbdebug: Refactor on EHCI memory space
We only reference with ehci_caps and ehci_regs during initialisation, no need to carry those around. When EHCI BAR is relocated during PCI allocation, record the changed address even if usbdebug is not enabled. Use the DBGP_EP_VALID flags to determine if endpoints have been configured or not. Change-Id: Idfd52edf7c2fc25b1b225985462ac488264e4c6d Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/7207 Reviewed-by: Nico Huber <nico.h@gmx.de> Tested-by: build bot (Jenkins)
Diffstat (limited to 'src')
-rw-r--r--src/drivers/usb/ehci_debug.c30
1 files changed, 13 insertions, 17 deletions
diff --git a/src/drivers/usb/ehci_debug.c b/src/drivers/usb/ehci_debug.c
index 5a62999dc3..1ab6688a3c 100644
--- a/src/drivers/usb/ehci_debug.c
+++ b/src/drivers/usb/ehci_debug.c
@@ -37,8 +37,7 @@
#define DBGP_CONSOLE_EPIN 2
struct ehci_debug_info {
- void *ehci_caps;
- void *ehci_regs;
+ void *ehci_base;
void *ehci_debug;
struct dbgp_pipe ep_pipe[DBGP_MAX_ENDPOINTS];
@@ -562,7 +561,6 @@ static int usbdebug_init_(unsigned ehci_bar, unsigned offset, struct ehci_debug_
{
struct ehci_caps *ehci_caps;
struct ehci_regs *ehci_regs;
- struct ehci_dbg_port *ehci_debug;
struct usb_debug_descriptor dbgp_desc;
u32 cmd, ctrl, status, portsc, hcs_params;
@@ -573,14 +571,18 @@ static int usbdebug_init_(unsigned ehci_bar, unsigned offset, struct ehci_debug_
int port_map_tried;
int playtimes = 3;
+ /* Keep all endpoints disabled before any printk() call. */
+ memset(info, 0, sizeof (*info));
+ info->ehci_base = (void *)ehci_bar;
+ info->ehci_debug = (void *)(ehci_bar + offset);
+
dprintk(BIOS_INFO, "ehci_bar: 0x%x debug_offset 0x%x\n", ehci_bar, offset);
ehci_caps = (struct ehci_caps *)ehci_bar;
ehci_regs = (struct ehci_regs *)(ehci_bar +
HC_LENGTH(read32((unsigned long)&ehci_caps->hc_capbase)));
- ehci_debug = (struct ehci_dbg_port *)(ehci_bar + offset);
- info->ehci_debug = (void *)0;
- memset(&info->ep_pipe, 0, sizeof (info->ep_pipe));
+
+ struct ehci_dbg_port *ehci_debug = info->ehci_debug;
if (CONFIG_USBDEBUG_DEFAULT_PORT > 0)
ehci_debug_select_port(CONFIG_USBDEBUG_DEFAULT_PORT);
@@ -682,6 +684,7 @@ try_next_port:
}
dprintk(BIOS_INFO, "EHCI done waiting for port.\n");
+
/* Enable the debug port */
ctrl = read32((unsigned long)&ehci_debug->control);
ctrl |= DBGP_CLAIM;
@@ -792,10 +795,6 @@ small_write:
}
dprintk(BIOS_INFO, "Test write done\n");
- info->ehci_caps = ehci_caps;
- info->ehci_regs = ehci_regs;
- info->ehci_debug = ehci_debug;
-
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;
@@ -861,16 +860,13 @@ void usbdebug_re_enable(unsigned ehci_base)
unsigned diff;
int i;
- if (!dbg_info->ehci_debug)
- return;
-
- diff = (unsigned)dbg_info->ehci_caps - ehci_base;
- dbg_info->ehci_regs -= diff;
+ diff = (unsigned)dbg_info->ehci_base - ehci_base;
dbg_info->ehci_debug -= diff;
- dbg_info->ehci_caps = (void*)ehci_base;
+ dbg_info->ehci_base = (void*)ehci_base;
for (i=0; i<DBGP_MAX_ENDPOINTS; i++)
- dbg_info->ep_pipe[i].status |= DBGP_EP_ENABLED;
+ if (dbg_info->ep_pipe[i].status & DBGP_EP_VALID)
+ dbg_info->ep_pipe[i].status |= DBGP_EP_ENABLED;
}
void usbdebug_disable(void)