Sven Schnelle (svens@stackframe.org) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/1357
-gerrit
commit 6b603ab770494a30e3232934aba0ea753167e528 Author: Sven Schnelle svens@stackframe.org Date: Thu Jul 26 14:31:40 2012 +0200
USBDEBUG: buffer up to 8 bytes
EHCI debug allows to send message with 8 bytes length, but we're only sending one byte in each transaction. Buffer up to 8 bytes to speed up debug output.
Change-Id: I9dbb406833c4966c3afbd610e1b13a8fa3d62f39 Signed-off-by: Sven Schnelle svens@stackframe.org --- src/arch/x86/lib/romstage_console.c | 5 ++++- src/console/usbdebug_console.c | 9 +++++++-- src/cpu/x86/smm/smiutil.c | 7 ++++--- src/include/usbdebug.h | 5 ++++- src/lib/usbdebug.c | 33 ++++++++++++++++++++++++++------- 5 files changed, 45 insertions(+), 14 deletions(-)
diff --git a/src/arch/x86/lib/romstage_console.c b/src/arch/x86/lib/romstage_console.c index 25eda9b..af2944d 100644 --- a/src/arch/x86/lib/romstage_console.c +++ b/src/arch/x86/lib/romstage_console.c @@ -44,7 +44,7 @@ static void console_tx_byte(unsigned char byte) uart8250_tx_byte(CONFIG_TTYS0_BASE, byte); #endif #if CONFIG_USBDEBUG - usbdebug_tx_byte(byte); + usbdebug_tx_byte(0, byte); #endif #if CONFIG_CONSOLE_NE2K ne2k_append_data(&byte, 1, CONFIG_CONSOLE_NE2K_IO_PORT); @@ -65,6 +65,9 @@ static void console_tx_flush(void) #if CONFIG_CONSOLE_NE2K ne2k_transmit(CONFIG_CONSOLE_NE2K_IO_PORT); #endif +#if CONFIG_USBDEBUG + usbdebug_tx_flush(0); +#endif }
int do_printk(int msg_level, const char *fmt, ...) diff --git a/src/console/usbdebug_console.c b/src/console/usbdebug_console.c index a624b9d..58a62b8 100644 --- a/src/console/usbdebug_console.c +++ b/src/console/usbdebug_console.c @@ -55,8 +55,7 @@ static void dbgp_init(void)
static void dbgp_tx_byte(unsigned char data) { - if (dbg_info.ehci_debug) - dbgp_bulk_write_x(&dbg_info, (char*)&data, 1); + usbdebug_tx_byte(&dbg_info, data); }
static unsigned char dbgp_rx_byte(void) @@ -69,6 +68,11 @@ static unsigned char dbgp_rx_byte(void) return data; }
+static void dbgp_tx_flush(void) +{ + usbdebug_tx_flush(&dbg_info); +} + static int dbgp_tst_byte(void) { return (int)dbg_info.ehci_debug; @@ -77,6 +81,7 @@ static int dbgp_tst_byte(void) static const struct console_driver usbdebug_direct_console __console = { .init = dbgp_init, .tx_byte = dbgp_tx_byte, + .tx_flush = dbgp_tx_flush, .rx_byte = dbgp_rx_byte, .tst_byte = dbgp_tst_byte, }; diff --git a/src/cpu/x86/smm/smiutil.c b/src/cpu/x86/smm/smiutil.c index 9cd63ed..1d2c86f 100644 --- a/src/cpu/x86/smm/smiutil.c +++ b/src/cpu/x86/smm/smiutil.c @@ -32,8 +32,9 @@ static u32 serial8250mem_base_address = 0;
void console_tx_flush(void) { - // the tx_byte functions take care of the flush. - // if not, this should be implemented. +#if CONFIG_USBDEBUG + usbdebug_tx_flush(0); +#endif }
void console_tx_byte(unsigned char byte) @@ -49,7 +50,7 @@ void console_tx_byte(unsigned char byte) uart8250_tx_byte(CONFIG_TTYS0_BASE, byte); #endif #if CONFIG_USBDEBUG - usbdebug_tx_byte(byte); + usbdebug_tx_byte(0, byte); #endif #if CONFIG_CONSOLE_NE2K ne2k_append_data(&byte, 1, CONFIG_CONSOLE_NE2K_IO_PORT); diff --git a/src/include/usbdebug.h b/src/include/usbdebug.h index a7ab21f..8caf361 100644 --- a/src/include/usbdebug.h +++ b/src/include/usbdebug.h @@ -30,6 +30,8 @@ struct ehci_debug_info { u32 devnum; u32 endpoint_out; u32 endpoint_in; + char buf[8]; + u8 bufidx; };
#ifndef __ROMCC__ @@ -41,7 +43,8 @@ void set_ehci_debug(unsigned ehci_debug); unsigned get_ehci_debug(void); void set_debug_port(unsigned port); int early_usbdebug_init(void); -void usbdebug_tx_byte(unsigned char data); +void usbdebug_tx_byte(struct ehci_debug_info *info, unsigned char data); +void usbdebug_tx_flush(struct ehci_debug_info *info); int usbdebug_init(unsigned ehci_bar, unsigned offset, struct ehci_debug_info *info); #endif #endif diff --git a/src/lib/usbdebug.c b/src/lib/usbdebug.c index 800ee52..fd23426 100644 --- a/src/lib/usbdebug.c +++ b/src/lib/usbdebug.c @@ -377,7 +377,7 @@ int usbdebug_init(unsigned ehci_bar, unsigned offset, struct ehci_debug_info *in HC_LENGTH(read32((unsigned long)&ehci_caps->hc_capbase))); ehci_debug = (struct ehci_dbg_port *)(ehci_bar + offset); info->ehci_debug = (void *)0; - + info->bufidx = 0; try_next_time: port_map_tried = 0;
@@ -573,15 +573,34 @@ int early_usbdebug_init(void) return usbdebug_init(CONFIG_EHCI_BAR, CONFIG_EHCI_DEBUG_OFFSET, dbg_info); }
-void usbdebug_tx_byte(unsigned char data) +void usbdebug_tx_byte(struct ehci_debug_info *dbg_info, unsigned char data) { - struct ehci_debug_info *dbg_info;
- /* "Find" dbg_info structure in Cache */ - dbg_info = (struct ehci_debug_info *) - (CONFIG_DCACHE_RAM_BASE + CONFIG_DCACHE_RAM_SIZE - sizeof(struct ehci_debug_info)); + if (!dbg_info) { + /* "Find" dbg_info structure in Cache */ + dbg_info = (struct ehci_debug_info *) + (CONFIG_DCACHE_RAM_BASE + CONFIG_DCACHE_RAM_SIZE - sizeof(struct ehci_debug_info)); + }
if (dbg_info->ehci_debug) { - dbgp_bulk_write_x(dbg_info, (char*)&data, 1); + dbg_info->buf[dbg_info->bufidx++] = data; + if (dbg_info->bufidx >= 8) { + dbgp_bulk_write_x(dbg_info, dbg_info->buf, dbg_info->bufidx); + dbg_info->bufidx = 0; + } + } +} + +void usbdebug_tx_flush(struct ehci_debug_info *dbg_info) +{ + if (!dbg_info) { + /* "Find" dbg_info structure in Cache */ + dbg_info = (struct ehci_debug_info *) + (CONFIG_DCACHE_RAM_BASE + CONFIG_DCACHE_RAM_SIZE - sizeof(struct ehci_debug_info)); + } + + if (dbg_info->ehci_debug && dbg_info->bufidx > 0) { + dbgp_bulk_write_x(dbg_info, dbg_info->buf, dbg_info->bufidx); + dbg_info->bufidx = 0; } }