[coreboot] New patch to review for coreboot: fc8da60 libpayload: improving OHCI TD/ED debugging

[Anton Kochkov (anton.kochkov@gmail.com)]

Anton Kochkov (anton.kochkov at gmail.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/2056

-gerrit

commit fc8da6097b4d884ee97c5fbc6b0fda581b14c67e
Author: Anton Kochkov <anton.kochkov at gmail.com>
Date:   Wed Dec 19 14:10:05 2012 +0400

    libpayload: improving OHCI TD/ED debugging
    
    Improving USB debugging for OHCI by enhacing dump_td
    and adding dump_ed function to dump all chain information
    
    Change-Id: Ia8b2a9b53e79b1f280fd12ea0d9233fc875e0b57
    Signed-off-by: Anton Kochkov <anton.kochkov at gmail.com>
---
 payloads/libpayload/drivers/usb/ohci.c | 69 ++++++++++++++++++++++++++++++++++
 1 file changed, 69 insertions(+)

diff --git a/payloads/libpayload/drivers/usb/ohci.c b/payloads/libpayload/drivers/usb/ohci.c
index ece31e4..5c84632 100644
--- a/payloads/libpayload/drivers/usb/ohci.c
+++ b/payloads/libpayload/drivers/usb/ohci.c
@@ -46,6 +46,75 @@ static void ohci_destroy_intr_queue (endpoint_t *ep, void *queue);
 static u8* ohci_poll_intr_queue (void *queue);
 static void ohci_process_done_queue(ohci_t *ohci, int spew_debug);
 
+static void dump_td (td_t *cur)
+{
+	usb_debug("+---------------------------------------------------+\n");
+	if (((cur->config & (3UL << 19)) >> 19) == 0)
+		usb_debug("|..[SETUP]..........................................|\n");
+	else if (((cur->config & (3UL << 8)) >> 8) == 2)
+		usb_debug("|..[IN].............................................|\n");
+	else if (((cur->config & (3UL << 8)) >> 8) == 1)
+		usb_debug("|..[OUT]............................................|\n");
+	else
+		usb_debug("|..[]...............................................|\n");
+	usb_debug("|:|============ OHCI TD at [0x%08lx] ==========|:|\n", virt_to_phys(cur));
+	usb_debug("|:| ERRORS = [%ld] | CONFIG = [0x%08lx] |        |:|\n",
+		3 - ((cur->config & (3UL << 26)) >> 26), cur->config);
+	usb_debug("|:+-----------------------------------------------+:|\n");
+	usb_debug("|:|   C   | Condition Code               |   [%02ld] |:|\n", (cur->config & (0xFUL << 28)) >> 28);
+	usb_debug("|:|   O   | Direction/PID                |    [%ld] |:|\n", (cur->config & (3UL << 19)) >> 19);
+	usb_debug("|:|   N   | Buffer Rounding              |    [%ld] |:|\n", (cur->config & (1UL << 18)) >> 18);
+	usb_debug("|:|   F   | Delay Intterrupt             |    [%ld] |:|\n", (cur->config & (7UL << 21)) >> 21);
+	usb_debug("|:|   I   | Data Toggle                  |    [%ld] |:|\n", (cur->config & (3UL << 24)) >> 24);
+	usb_debug("|:|   G   | Error Count                  |    [%ld] |:|\n", (cur->config & (3UL << 26)) >> 26);
+	usb_debug("|:+-----------------------------------------------+:|\n");
+	usb_debug("|:| Current Buffer Pointer         [0x%08lx]   |:|\n", cur->current_buffer_pointer);
+	usb_debug("|:+-----------------------------------------------+:|\n");
+	usb_debug("|:| Next TD                        [0x%08lx]   |:|\n", cur->next_td);
+	usb_debug("|:+-----------------------------------------------+:|\n");
+	usb_debug("|:| Current Buffer End             [0x%08lx]   |:|\n", cur->buffer_end);
+	usb_debug("|:|-----------------------------------------------|:|\n");
+	usb_debug("|...................................................|\n");
+	usb_debug("+---------------------------------------------------+\n");
+}
+
+static void dump_ed (ed_t far *cur)
+{
+	td_t *tmp_td = NULL;
+	usb_debug("+===================================================+\n");
+	usb_debug("| ############# OHCI ED at [0x%08lx] ########### |\n", virt_to_phys(cur));
+	usb_debug("+---------------------------------------------------+\n");
+	usb_debug("| Next Endpoint Descriptor       [0x%08lx]       |\n", cur->next_ed & ~0xFUL);
+	usb_debug("+---------------------------------------------------+\n");
+	usb_debug("|        |               @ 0x%08lx :             |\n", cur->config);
+	usb_debug("|   C    | Maximum Packet Length           | [%04ld] |\n", ((cur->config & (0x3fffUL << 16)) >> 16));
+	usb_debug("|   O    | Function Address                | [%04ld] |\n", cur->config & 0x7F);
+	usb_debug("|   N    | Endpoint Number                 |   [%02ld] |\n", (cur->config & (0xFUL << 7)) >> 7);
+	usb_debug("|   F    | Endpoint Direction              |    [%ld] |\n", ((cur->config & (3UL << 11)) >> 11));
+	usb_debug("|   I    | Endpoint Speed                  |    [%ld] |\n", ((cur->config & (1UL << 13)) >> 13));
+	usb_debug("|   G    | Skip                            |    [%ld] |\n", ((cur->config & (1UL << 14)) >> 14));
+	usb_debug("|        | Format                          |    [%ld] |\n", ((cur->config & (1UL << 15)) >> 15));
+	usb_debug("+---------------------------------------------------+\n");
+	usb_debug("| TD Queue Tail Pointer          [0x%08lx]       |\n", cur->tail_pointer & ~0xFUL);
+	usb_debug("+---------------------------------------------------+\n");
+	usb_debug("| TD Queue Head Pointer          [0x%08lx]       |\n", cur->head_pointer & ~0xFUL);
+	usb_debug("| CarryToggleBit    [%d]          Halted   [%d]         |\n", (u16)(cur->head_pointer & 0x2UL)>>1, (u16)(cur->head_pointer & 0x1UL));
+
+	tmp_td = (td_t *)phys_to_virt((cur->head_pointer & ~0xFUL));
+	if ((cur->head_pointer & ~0xFUL) != (cur->tail_pointer & ~0xFUL)) {
+		usb_debug("|:::::::::::::::::: OHCI TD CHAIN ::::::::::::::::::|\n");
+		while (virt_to_phys(tmp_td) != (cur->tail_pointer & ~0xFUL))
+		{
+			dump_td(tmp_td, 1);
+			tmp_td = (td_t *)phys_to_virt((tmp_td->next_td & ~0xFUL));
+		}
+		usb_debug("|:::::::::::::::: EOF OHCI TD CHAIN ::::::::::::::::|\n");
+		usb_debug("+---------------------------------------------------+\n");
+	} else {
+		usb_debug("+---------------------------------------------------+\n");
+	}
+}
+
 static void
 ohci_reset (hci_t *controller)
 {