diff options
author | Stefan Reinauer <stepan@coresystems.de> | 2010-05-25 16:17:45 +0000 |
---|---|---|
committer | Stefan Reinauer <stepan@openbios.org> | 2010-05-25 16:17:45 +0000 |
commit | da3237376f8f4d35731ef9abfb7a7e5b94926198 (patch) | |
tree | 049137e129e64600909747112c08d1a186b40694 /src/lib/usbdebug_direct.c | |
parent | 56394484e3b46d234ec504dc23114b9cf8c67778 (diff) | |
download | coreboot-da3237376f8f4d35731ef9abfb7a7e5b94926198.tar.xz |
Long ago we agreed on kicking the _direct appendix because everything in
coreboot is direct. This patch does it.
Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5586 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'src/lib/usbdebug_direct.c')
-rw-r--r-- | src/lib/usbdebug_direct.c | 550 |
1 files changed, 0 insertions, 550 deletions
diff --git a/src/lib/usbdebug_direct.c b/src/lib/usbdebug_direct.c deleted file mode 100644 index 19ce15086f..0000000000 --- a/src/lib/usbdebug_direct.c +++ /dev/null @@ -1,550 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright (C) 2006 Eric Biederman (ebiederm@xmission.com) - * - * 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 - */ -/* - * 2006.12.10 yhlu moved it to corbeoot and use struct instead - */ -#if !defined(__ROMCC__) -#include <console/console.h> -#else -#if CONFIG_USE_PRINTK_IN_CAR==0 -#define printk(BIOS_DEBUG, fmt, arg...) do {} while(0) -#endif -#endif - -#include <arch/io.h> - -#include <usb_ch9.h> -#include <ehci.h> -#include <usbdebug_direct.h> - -#define USB_DEBUG_DEVNUM 127 - -#define DBGP_DATA_TOGGLE 0x8800 -#define DBGP_PID_UPDATE(x, tok) \ - ((((x) ^ DBGP_DATA_TOGGLE) & 0xffff00) | ((tok) & 0xff)) - -#define DBGP_LEN_UPDATE(x, len) (((x) & ~0x0f) | ((len) & 0x0f)) -/* - * USB Packet IDs (PIDs) - */ - -/* token */ -#define USB_PID_OUT 0xe1 -#define USB_PID_IN 0x69 -#define USB_PID_SOF 0xa5 -#define USB_PID_SETUP 0x2d -/* handshake */ -#define USB_PID_ACK 0xd2 -#define USB_PID_NAK 0x5a -#define USB_PID_STALL 0x1e -#define USB_PID_NYET 0x96 -/* data */ -#define USB_PID_DATA0 0xc3 -#define USB_PID_DATA1 0x4b -#define USB_PID_DATA2 0x87 -#define USB_PID_MDATA 0x0f -/* Special */ -#define USB_PID_PREAMBLE 0x3c -#define USB_PID_ERR 0x3c -#define USB_PID_SPLIT 0x78 -#define USB_PID_PING 0xb4 -#define USB_PID_UNDEF_0 0xf0 - -#define USB_PID_DATA_TOGGLE 0x88 -#define DBGP_CLAIM (DBGP_OWNER | DBGP_ENABLED | DBGP_INUSE) - -#define PCI_CAP_ID_EHCI_DEBUG 0xa - -#define HUB_ROOT_RESET_TIME 50 /* times are in msec */ -#define HUB_SHORT_RESET_TIME 10 -#define HUB_LONG_RESET_TIME 200 -#define HUB_RESET_TIMEOUT 500 - -#define DBGP_MAX_PACKET 8 - -static int dbgp_wait_until_complete(struct ehci_dbg_port *ehci_debug) -{ - unsigned ctrl; - int loop = 0x100000; - do { - ctrl = read32(&ehci_debug->control); - /* Stop when the transaction is finished */ - if (ctrl & DBGP_DONE) - break; - } while(--loop>0); - - if (!loop) return -1000; - - /* Now that we have observed the completed transaction, - * clear the done bit. - */ - write32(&ehci_debug->control, ctrl | DBGP_DONE); - return (ctrl & DBGP_ERROR) ? -DBGP_ERRCODE(ctrl) : DBGP_LEN(ctrl); -} - -static void dbgp_mdelay(int ms) -{ - int i; - while (ms--) { - for (i = 0; i < 1000; i++) - inb(0x80); - } -} - -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) -{ - unsigned pids, lpid; - int ret; - - int loop = 3; -retry: - write32(&ehci_debug->control, ctrl | DBGP_GO); - ret = dbgp_wait_until_complete(ehci_debug); - pids = read32(&ehci_debug->pids); - lpid = DBGP_PID_GET(pids); - - if (ret < 0) - return ret; - - /* If the port is getting full or it has dropped data - * start pacing ourselves, not necessary but it's friendly. - */ - if ((lpid == USB_PID_NAK) || (lpid == USB_PID_NYET)) - dbgp_breath(); - - /* If I get a NACK reissue the transmission */ - if (lpid == USB_PID_NAK) { - if (--loop > 0) goto retry; - } - - return ret; -} - -static void dbgp_set_data(struct ehci_dbg_port *ehci_debug, const void *buf, int size) -{ - const unsigned char *bytes = buf; - unsigned lo, hi; - int i; - lo = hi = 0; - for (i = 0; i < 4 && i < size; i++) - lo |= bytes[i] << (8*i); - for (; i < 8 && i < size; i++) - hi |= bytes[i] << (8*(i - 4)); - write32(&ehci_debug->data03, lo); - write32(&ehci_debug->data47, hi); -} - -static void dbgp_get_data(struct ehci_dbg_port *ehci_debug, void *buf, int size) -{ - unsigned char *bytes = buf; - unsigned lo, hi; - int i; - lo = read32(&ehci_debug->data03); - hi = read32(&ehci_debug->data47); - for (i = 0; i < 4 && i < size; i++) - bytes[i] = (lo >> (8*i)) & 0xff; - for (; i < 8 && i < size; i++) - 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) -{ - unsigned pids, addr, ctrl; - int ret; - if (size > DBGP_MAX_PACKET) - return -1; - - addr = DBGP_EPADDR(devnum, endpoint); - - pids = read32(&ehci_debug->pids); - pids = DBGP_PID_UPDATE(pids, USB_PID_OUT); - - ctrl = read32(&ehci_debug->control); - ctrl = DBGP_LEN_UPDATE(ctrl, size); - ctrl |= DBGP_OUT; - ctrl |= DBGP_GO; - - dbgp_set_data(ehci_debug, bytes, size); - write32(&ehci_debug->address, addr); - write32(&ehci_debug->pids, pids); - - ret = dbgp_wait_until_done(ehci_debug, ctrl); - if (ret < 0) { - return ret; - } - return ret; -} - -int dbgp_bulk_write_x(struct ehci_debug_info *dbg_info, const char *bytes, int size) -{ - return dbgp_bulk_write(dbg_info->ehci_debug, dbg_info->devnum, dbg_info->endpoint_out, bytes, size); -} - -static int dbgp_bulk_read(struct ehci_dbg_port *ehci_debug, unsigned devnum, unsigned endpoint, void *data, int size) -{ - unsigned pids, addr, ctrl; - int ret; - - if (size > DBGP_MAX_PACKET) - return -1; - - addr = DBGP_EPADDR(devnum, endpoint); - - pids = read32(&ehci_debug->pids); - pids = DBGP_PID_UPDATE(pids, USB_PID_IN); - - ctrl = read32(&ehci_debug->control); - ctrl = DBGP_LEN_UPDATE(ctrl, size); - ctrl &= ~DBGP_OUT; - ctrl |= DBGP_GO; - - write32(&ehci_debug->address, addr); - write32(&ehci_debug->pids, pids); - ret = dbgp_wait_until_done(ehci_debug, ctrl); - if (ret < 0) - return ret; - if (size > ret) - size = ret; - dbgp_get_data(ehci_debug, data, size); - return ret; -} -int dbgp_bulk_read_x(struct ehci_debug_info *dbg_info, void *data, int size) -{ - return dbgp_bulk_read(dbg_info->ehci_debug, dbg_info->devnum, dbg_info->endpoint_in, data, size); -} - -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) -{ - unsigned pids, addr, ctrl; - struct usb_ctrlrequest req; - int read; - int ret; - - read = (requesttype & USB_DIR_IN) != 0; - if (size > (read?DBGP_MAX_PACKET:0)) - return -1; - - /* Compute the control message */ - req.bRequestType = requesttype; - req.bRequest = request; - req.wValue = value; - req.wIndex = index; - req.wLength = size; - - pids = DBGP_PID_SET(USB_PID_DATA0, USB_PID_SETUP); - addr = DBGP_EPADDR(devnum, 0); - - ctrl = read32(&ehci_debug->control); - ctrl = DBGP_LEN_UPDATE(ctrl, sizeof(req)); - ctrl |= DBGP_OUT; - ctrl |= DBGP_GO; - - /* Send the setup message */ - dbgp_set_data(ehci_debug, &req, sizeof(req)); - write32(&ehci_debug->address, addr); - write32(&ehci_debug->pids, pids); - ret = dbgp_wait_until_done(ehci_debug, ctrl); - if (ret < 0) - return ret; - - - /* Read the result */ - ret = dbgp_bulk_read(ehci_debug, devnum, 0, data, size); - return ret; -} - -static int ehci_reset_port(struct ehci_regs *ehci_regs, int port) -{ - unsigned portsc; - unsigned delay_time, delay; - int loop; - - /* Reset the usb debug port */ - portsc = read32(&ehci_regs->port_status[port - 1]); - portsc &= ~PORT_PE; - portsc |= PORT_RESET; - write32(&ehci_regs->port_status[port - 1], portsc); - - delay = HUB_ROOT_RESET_TIME; - for (delay_time = 0; delay_time < HUB_RESET_TIMEOUT; - delay_time += delay) { - dbgp_mdelay(delay); - - portsc = read32(&ehci_regs->port_status[port - 1]); - if (portsc & PORT_RESET) { - /* force reset to complete */ - loop = 2; - write32(&ehci_regs->port_status[port - 1], - portsc & ~(PORT_RWC_BITS | PORT_RESET)); - do { - dbgp_mdelay(delay); - portsc = read32(&ehci_regs->port_status[port - 1]); - delay_time += delay; - } while ((portsc & PORT_RESET) && (--loop > 0)); - if (!loop) { - printk(BIOS_DEBUG, "ehci_reset_port forced done"); - } - } - - /* Device went away? */ - if (!(portsc & PORT_CONNECT)) - return -107;//-ENOTCONN; - - /* bomb out completely if something weird happend */ - if ((portsc & PORT_CSC)) - return -22;//-EINVAL; - - /* If we've finished resetting, then break out of the loop */ - if (!(portsc & PORT_RESET) && (portsc & PORT_PE)) - return 0; - } - return -16;//-EBUSY; -} - -static int ehci_wait_for_port(struct ehci_regs *ehci_regs, int port) -{ - unsigned status; - int ret, reps; - for (reps = 0; reps < 3; reps++) { - dbgp_mdelay(100); - status = read32(&ehci_regs->status); - if (status & STS_PCD) { - ret = ehci_reset_port(ehci_regs, port); - if (ret == 0) - return 0; - } - } - return -107; //-ENOTCONN; -} - - -#define DBGP_DEBUG 1 -#if DBGP_DEBUG -# define dbgp_printk(fmt_arg...) printk(BIOS_DEBUG, fmt_arg) -#else -#define dbgp_printk(fmt_arg...) do {} while(0) -#endif -static void usbdebug_direct_init(unsigned ehci_bar, unsigned offset, struct ehci_debug_info *info) -{ - struct ehci_caps *ehci_caps; - struct ehci_regs *ehci_regs; - struct ehci_dbg_port *ehci_debug; - unsigned dbgp_endpoint_out; - unsigned dbgp_endpoint_in; - struct usb_debug_descriptor dbgp_desc; - unsigned ctrl, devnum; - int ret; - unsigned delay_time, delay; - int loop; - - unsigned cmd, status, portsc, hcs_params, debug_port, n_ports, new_debug_port; - int i; - unsigned port_map_tried; - - unsigned playtimes = 3; - - ehci_caps = (struct ehci_caps *)ehci_bar; - ehci_regs = (struct ehci_regs *)(ehci_bar + HC_LENGTH(read32(&ehci_caps->hc_capbase))); - ehci_debug = (struct ehci_dbg_port *)(ehci_bar + offset); - - info->ehci_debug = (void *)0; - -try_next_time: - port_map_tried = 0; - -try_next_port: - hcs_params = read32(&ehci_caps->hcs_params); - debug_port = HCS_DEBUG_PORT(hcs_params); - n_ports = HCS_N_PORTS(hcs_params); - - dbgp_printk("ehci_bar: 0x%x\n", ehci_bar); - dbgp_printk("debug_port: %d\n", debug_port); - dbgp_printk("n_ports: %d\n", n_ports); - -#if 1 - for (i = 1; i <= n_ports; i++) { - portsc = read32(&ehci_regs->port_status[i-1]); - dbgp_printk("PORTSC #%d: %08x\n", i, portsc); - } -#endif - - if(port_map_tried && (new_debug_port!=debug_port)) { - if(--playtimes) { - set_debug_port(debug_port); - goto try_next_time; - } - return; - } - - /* Reset the EHCI controller */ - loop = 10; - cmd = read32(&ehci_regs->command); - cmd |= CMD_RESET; - write32(&ehci_regs->command, cmd); - do { - cmd = read32(&ehci_regs->command); - } while ((cmd & CMD_RESET) && (--loop > 0)); - - if(!loop) - dbgp_printk("Could not reset EHCI controller.\n"); - else - dbgp_printk("EHCI controller reset successfully.\n"); - - /* Claim ownership, but do not enable yet */ - ctrl = read32(&ehci_debug->control); - ctrl |= DBGP_OWNER; - ctrl &= ~(DBGP_ENABLED | DBGP_INUSE); - write32(&ehci_debug->control, ctrl); - - /* Start the ehci running */ - cmd = read32(&ehci_regs->command); - cmd &= ~(CMD_LRESET | CMD_IAAD | CMD_PSE | CMD_ASE | CMD_RESET); - cmd |= CMD_RUN; - write32(&ehci_regs->command, cmd); - - /* Ensure everything is routed to the EHCI */ - write32(&ehci_regs->configured_flag, FLAG_CF); - - /* Wait until the controller is no longer halted */ - loop = 10; - do { - status = read32(&ehci_regs->status); - } while ((status & STS_HALT) && (--loop>0)); - - if(!loop) { - dbgp_printk("EHCI could not be started.\n"); - return; - } - dbgp_printk("EHCI started.\n"); - - /* Wait for a device to show up in the debug port */ - ret = ehci_wait_for_port(ehci_regs, debug_port); - if (ret < 0) { - dbgp_printk("No device found in debug port %d\n", debug_port); - goto next_debug_port; - } - dbgp_printk("EHCI done waiting for port.\n"); - - /* Enable the debug port */ - ctrl = read32(&ehci_debug->control); - ctrl |= DBGP_CLAIM; - write32(&ehci_debug->control, ctrl); - ctrl = read32(&ehci_debug->control); - if ((ctrl & DBGP_CLAIM) != DBGP_CLAIM) { - dbgp_printk("No device in EHCI debug port.\n"); - write32(&ehci_debug->control, ctrl & ~DBGP_CLAIM); - goto err; - } - dbgp_printk("EHCI debug port enabled.\n"); - - /* Completely transfer the debug device to the debug controller */ - portsc = read32(&ehci_regs->port_status[debug_port - 1]); - portsc &= ~PORT_PE; - write32(&ehci_regs->port_status[debug_port - 1], portsc); - - dbgp_mdelay(100); - - /* Find the debug device and make it device number 127 */ - for (devnum = 0; devnum <= 127; devnum++) { - ret = dbgp_control_msg(ehci_debug, devnum, - USB_DIR_IN | USB_TYPE_STANDARD | USB_RECIP_DEVICE, - USB_REQ_GET_DESCRIPTOR, (USB_DT_DEBUG << 8), 0, - &dbgp_desc, sizeof(dbgp_desc)); - if (ret > 0) - break; - } - if (devnum > 127) { - dbgp_printk("Could not find attached debug device.\n"); - goto err; - } - if (ret < 0) { - dbgp_printk("Attached device is not a debug device.\n"); - goto err; - } - dbgp_endpoint_out = dbgp_desc.bDebugOutEndpoint; - dbgp_endpoint_in = dbgp_desc.bDebugInEndpoint; - - /* Move the device to 127 if it isn't already there */ - if (devnum != USB_DEBUG_DEVNUM) { - ret = dbgp_control_msg(ehci_debug, devnum, - USB_DIR_OUT | USB_TYPE_STANDARD | USB_RECIP_DEVICE, - USB_REQ_SET_ADDRESS, USB_DEBUG_DEVNUM, 0, (void *)0, 0); - if (ret < 0) { - dbgp_printk("Could not move attached device to %d.\n", - USB_DEBUG_DEVNUM); - goto err; - } - devnum = USB_DEBUG_DEVNUM; - dbgp_printk("EHCI debug device renamed to 127.\n"); - } - - /* Enable the debug interface */ - ret = dbgp_control_msg(ehci_debug, USB_DEBUG_DEVNUM, - USB_DIR_OUT | USB_TYPE_STANDARD | USB_RECIP_DEVICE, - USB_REQ_SET_FEATURE, USB_DEVICE_DEBUG_MODE, 0, (void *)0, 0); - if (ret < 0) { - dbgp_printk("Could not enable EHCI debug device.\n"); - goto err; - } - dbgp_printk("EHCI debug interface enabled.\n"); - - /* Perform a small write to get the even/odd data state in sync - */ - ret = dbgp_bulk_write(ehci_debug, USB_DEBUG_DEVNUM, dbgp_endpoint_out, " ",1); - if (ret < 0) { - dbgp_printk("dbgp_bulk_write failed: %d\n", ret); - goto err; - } - dbgp_printk("Test write done\n"); - - info->ehci_caps = ehci_caps; - info->ehci_regs = ehci_regs; - info->ehci_debug = ehci_debug; - info->devnum = devnum; - info->endpoint_out = dbgp_endpoint_out; - info->endpoint_in = dbgp_endpoint_in; - - return; -err: - /* Things didn't work so remove my claim */ - ctrl = read32(&ehci_debug->control); - ctrl &= ~(DBGP_CLAIM | DBGP_OUT); - write32((unsigned long)&ehci_debug->control, ctrl); - -next_debug_port: - port_map_tried |= (1<<(debug_port-1)); - if(port_map_tried != ((1<<n_ports) -1)) { - new_debug_port = ((debug_port-1+1)%n_ports) + 1; - set_debug_port(new_debug_port); - goto try_next_port; - } - if(--playtimes) { - set_debug_port(debug_port); - goto try_next_time; - } - -} - - |