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authorKyösti Mälkki <kyosti.malkki@gmail.com>2014-02-05 13:02:55 +0200
committerKyösti Mälkki <kyosti.malkki@gmail.com>2014-02-06 11:13:57 +0100
commite2227a23a73f2d68cd5d339559813eefc6942837 (patch)
tree8c565a35555e438f4a38599365e5aa0d63027967 /src/lib
parent9db1c4e51a24ca1d81cd0d764c01ddd612aab775 (diff)
downloadcoreboot-e2227a23a73f2d68cd5d339559813eefc6942837.tar.xz
usbdebug: Move under drivers/usb
Also relocate and split header files, there is some interest for EHCI debug support without PCI. Change-Id: Ibe91730eb72dfe0634fb38bdd184043495e2fb08 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/5129 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@google.com>
Diffstat (limited to 'src/lib')
-rw-r--r--src/lib/Makefile.inc2
-rw-r--r--src/lib/usbdebug.c1043
2 files changed, 0 insertions, 1045 deletions
diff --git a/src/lib/Makefile.inc b/src/lib/Makefile.inc
index 18b30efefa..b1b4748960 100644
--- a/src/lib/Makefile.inc
+++ b/src/lib/Makefile.inc
@@ -49,7 +49,6 @@ romstage-$(CONFIG_CONSOLE_SERIAL8250) += uart8250.c
romstage-$(CONFIG_CONSOLE_SERIAL8250MEM) += uart8250mem.c
romstage-$(CONFIG_CONSOLE_NE2K) += ne2k.c
romstage-$(CONFIG_SPKMODEM) += spkmodem.c
-romstage-$(CONFIG_USBDEBUG_IN_ROMSTAGE) += usbdebug.c
ifeq ($(CONFIG_EARLY_CBMEM_INIT),y)
romstage-$(CONFIG_COLLECT_TIMESTAMPS) += timestamp.c
@@ -92,7 +91,6 @@ romstage-y += clog2.c
ramstage-$(CONFIG_CONSOLE_SERIAL8250) += uart8250.c
ramstage-$(CONFIG_CONSOLE_SERIAL8250MEM) += uart8250mem.c
ramstage-$(CONFIG_CONSOLE_CBMEM) += cbmem_console.c
-ramstage-$(CONFIG_USBDEBUG) += usbdebug.c
ramstage-$(CONFIG_SPKMODEM) += spkmodem.c
ramstage-$(CONFIG_BOOTSPLASH) += jpeg.c
ramstage-$(CONFIG_TRACE) += trace.c
diff --git a/src/lib/usbdebug.c b/src/lib/usbdebug.c
deleted file mode 100644
index 885599b1a6..0000000000
--- a/src/lib/usbdebug.c
+++ /dev/null
@@ -1,1043 +0,0 @@
-/*
- * This file is part of the coreboot project.
- *
- * Copyright (C) 2006 Eric Biederman (ebiederm@xmission.com)
- * Copyright (C) 2007 AMD
- *
- * 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 <arch/io.h>
-#include <device/pci.h>
-#include <device/pci_def.h>
-#include <arch/byteorder.h>
-#include <arch/early_variables.h>
-#include <string.h>
-#include <cbmem.h>
-
-#include <usb_ch9.h>
-#include <ehci.h>
-#include <usbdebug.h>
-
-
-#define DBGP_EP_VALID (1<<0)
-#define DBGP_EP_ENABLED (1<<1)
-#define DBGP_EP_BUSY (1<<2)
-#define DBGP_EP_STATMASK (DBGP_EP_VALID | DBGP_EP_ENABLED)
-
-struct dbgp_pipe
-{
- u8 devnum;
- u8 endpoint;
- u8 pid;
- u8 status;
- int timeout;
-
- u8 bufidx;
- char buf[8];
-};
-
-#define DBGP_MAX_ENDPOINTS 4
-#define DBGP_SETUP_EP0 0 /* Compulsory endpoint 0. */
-#define DBGP_CONSOLE_EPOUT 1
-#define DBGP_CONSOLE_EPIN 2
-
-struct ehci_debug_info {
- void *ehci_caps;
- void *ehci_regs;
- void *ehci_debug;
-
- struct dbgp_pipe ep_pipe[DBGP_MAX_ENDPOINTS];
-};
-
-#if CONFIG_DEBUG_USBDEBUG
-static void dbgp_print_data(struct ehci_dbg_port *ehci_debug);
-static int dbgp_enabled(void);
-# define dprintk(LEVEL, args...) \
- do { if (!dbgp_enabled()) printk(LEVEL, ##args); } while (0)
-#else
-# define dbgp_print_data(x) do {} while(0)
-# 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)
- */
-
-/* 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_MICROFRAME_TIMEOUT_LOOPS 1000
-#define DBGP_MICROFRAME_RETRIES 10
-#define DBGP_MAX_PACKET 8
-
-static struct ehci_debug_info glob_dbg_info CAR_GLOBAL;
-#if !defined(__PRE_RAM__) && !defined(__SMM__)
-static struct device_operations *ehci_drv_ops;
-static struct device_operations ehci_dbg_ops;
-#endif
-
-static inline struct ehci_debug_info *dbgp_ehci_info(void)
-{
- return car_get_var_ptr(&glob_dbg_info);
-}
-
-static int dbgp_wait_until_complete(struct ehci_dbg_port *ehci_debug)
-{
- u32 ctrl;
- int loop = 0;
-
- do {
- ctrl = read32((unsigned long)&ehci_debug->control);
- /* Stop when the transaction is finished */
- if (ctrl & DBGP_DONE)
- break;
- } while (++loop < DBGP_MICROFRAME_TIMEOUT_LOOPS);
-
- if (! (ctrl & DBGP_DONE)) {
- dprintk(BIOS_ERR, "dbgp_wait_until_complete: retry timeout.\n");
- return -DBGP_ERR_SIGNAL;
- }
-
- /* Now that we have observed the completed transaction,
- * clear the done bit.
- */
- write32((unsigned long)&ehci_debug->control, ctrl | DBGP_DONE);
- return (ctrl & DBGP_ERROR) ? -DBGP_ERRCODE(ctrl) : DBGP_LEN(ctrl);
-}
-
-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, struct dbgp_pipe *pipe,
- unsigned ctrl, const int timeout)
-{
- u32 rd_ctrl, rd_pids;
- u32 ctrl_prev = 0, pids_prev = 0;
- u8 lpid;
- int ret, host_retries;
- int loop;
-
- loop = 0;
-device_retry:
- host_retries = 0;
- if (loop++ >= timeout)
- return -DBGP_ERR_BAD;
-
-host_retry:
- if (host_retries++ >= DBGP_MICROFRAME_RETRIES)
- return -DBGP_ERR_BAD;
- if (loop == 1 || host_retries > 1)
- dprintk(BIOS_SPEW, "dbgp: start (@ %3d,%d) ctrl=%08x\n",
- loop, host_retries, ctrl | DBGP_GO);
- write32((unsigned long)&ehci_debug->control, ctrl | DBGP_GO);
- ret = dbgp_wait_until_complete(ehci_debug);
- rd_ctrl = read32((unsigned long)&ehci_debug->control);
- rd_pids = read32((unsigned long)&ehci_debug->pids);
-
- if (rd_ctrl != ctrl_prev || rd_pids != pids_prev || (ret<0)) {
- ctrl_prev = rd_ctrl;
- pids_prev = rd_pids;
- dprintk(BIOS_SPEW, "dbgp: status (@ %3d,%d) ctrl=%08x pids=%08x ret=%d\n",
- loop, host_retries, rd_ctrl, rd_pids, ret);
- }
-
- /* Controller hardware failure. */
- if (ret == -DBGP_ERR_SIGNAL) {
- return ret;
-
- /* Bus failure (corrupted microframe). */
- } else if (ret == -DBGP_ERR_BAD) {
- goto host_retry;
- }
-
- lpid = DBGP_PID_GET(rd_pids);
-
- /* If I get an ACK or in-sync DATA PID, we are done. */
- if ((lpid == USB_PID_ACK) || (lpid == pipe->pid)) {
- if (DBGP_LEN(rd_ctrl))
- pipe->pid ^= USB_PID_DATA_TOGGLE;
- }
-
- /* If the port is getting full or it has dropped data
- * start pacing ourselves, not necessary but it's friendly.
- */
- else if (lpid == USB_PID_NYET) {
- dbgp_breath();
- goto device_retry;
- }
-
- /* If I get a NACK or out-of-sync DATA PID, reissue the transmission. */
- else if ((lpid == USB_PID_NAK) || (lpid == (pipe->pid ^ USB_PID_DATA_TOGGLE))) {
- goto device_retry;
- }
-
- /* Abort on STALL handshake for endpoint 0.*/
- else if ((lpid == USB_PID_STALL) && (pipe->endpoint == 0x0)) {
- ret = -DBGP_ERR_BAD;
- }
-
- dbgp_print_data(ehci_debug);
-
- return ret;
-}
-
-static void dbgp_set_data(struct ehci_dbg_port *ehci_debug, const void *buf, int size)
-{
- const unsigned char *bytes = buf;
- u32 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((unsigned long)&ehci_debug->data03, lo);
- write32((unsigned long)&ehci_debug->data47, hi);
-}
-
-static void dbgp_get_data(struct ehci_dbg_port *ehci_debug, void *buf, int size)
-{
- unsigned char *bytes = buf;
- u32 lo, hi;
- int i;
-
- lo = read32((unsigned long)&ehci_debug->data03);
- hi = read32((unsigned long)&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;
-}
-
-#if CONFIG_DEBUG_USBDEBUG
-static void dbgp_print_data(struct ehci_dbg_port *ehci_debug)
-{
- u32 ctrl = read32((unsigned long)&ehci_debug->control);
- u32 lo = read32((unsigned long)&ehci_debug->data03);
- u32 hi = read32((unsigned long)&ehci_debug->data47);
- int len = DBGP_LEN(ctrl);
- if (len) {
- int i;
- dprintk(BIOS_SPEW, "dbgp: buf:");
- for (i = 0; i < 4 && i < len; i++)
- dprintk(BIOS_SPEW, " %02x", (lo >> (8*i)) & 0xff);
- for (; i < 8 && i < len; i++)
- dprintk(BIOS_SPEW, " %02x", (hi >> (8*(i - 4))) & 0xff);
- dprintk(BIOS_SPEW, "\n");
- }
-}
-#endif
-
-static int dbgp_bulk_write(struct ehci_dbg_port *ehci_debug, struct dbgp_pipe *pipe,
- const char *bytes, int size)
-{
- u32 pids, addr, ctrl;
- int ret;
-
- if (size > DBGP_MAX_PACKET)
- return -1;
-
- addr = DBGP_EPADDR(pipe->devnum, pipe->endpoint);
- pids = DBGP_PID_SET(pipe->pid, USB_PID_OUT);
-
- ctrl = read32((unsigned long)&ehci_debug->control);
- ctrl = DBGP_LEN_UPDATE(ctrl, size);
- ctrl |= DBGP_OUT;
-
- dbgp_set_data(ehci_debug, bytes, size);
- write32((unsigned long)&ehci_debug->address, addr);
- write32((unsigned long)&ehci_debug->pids, pids);
-
- ret = dbgp_wait_until_done(ehci_debug, pipe, ctrl, pipe->timeout);
-
- return ret;
-}
-
-int dbgp_bulk_write_x(struct dbgp_pipe *pipe, const char *bytes, int size)
-{
- struct ehci_debug_info *dbg_info = dbgp_ehci_info();
- return dbgp_bulk_write(dbg_info->ehci_debug, pipe, bytes, size);
-}
-
-static int dbgp_bulk_read(struct ehci_dbg_port *ehci_debug, struct dbgp_pipe *pipe,
- void *data, int size)
-{
- u32 pids, addr, ctrl;
- int ret;
-
- if (size > DBGP_MAX_PACKET)
- return -1;
-
- addr = DBGP_EPADDR(pipe->devnum, pipe->endpoint);
- pids = DBGP_PID_SET(pipe->pid, USB_PID_IN);
-
- ctrl = read32((unsigned long)&ehci_debug->control);
- ctrl = DBGP_LEN_UPDATE(ctrl, size);
- ctrl &= ~DBGP_OUT;
-
- write32((unsigned long)&ehci_debug->address, addr);
- write32((unsigned long)&ehci_debug->pids, pids);
- ret = dbgp_wait_until_done(ehci_debug, pipe, ctrl, pipe->timeout);
- 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 dbgp_pipe *pipe, void *data, int size)
-{
- struct ehci_debug_info *dbg_info = dbgp_ehci_info();
- return dbgp_bulk_read(dbg_info->ehci_debug, pipe, data, size);
-}
-
-static void dbgp_mdelay(int ms)
-{
- int i;
-
- while (ms--) {
- for (i = 0; i < 1000; i++)
- inb(0x80);
- }
-}
-
-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)
-{
- struct ehci_debug_info *info = dbgp_ehci_info();
- struct dbgp_pipe *pipe = &info->ep_pipe[DBGP_SETUP_EP0];
- u32 pids, addr, ctrl;
- struct usb_ctrlrequest req;
- int read;
- int ret, ret2;
-
- read = (requesttype & USB_DIR_IN) != 0;
- if (size > DBGP_MAX_PACKET)
- return -1;
-
- /* Compute the control message */
- req.bRequestType = requesttype;
- req.bRequest = request;
- req.wValue = cpu_to_le16(value);
- req.wIndex = cpu_to_le16(index);
- req.wLength = cpu_to_le16(size);
-
- pipe->devnum = devnum;
- pipe->endpoint = 0;
- pipe->pid = USB_PID_DATA0;
- pipe->timeout = 1000;
- addr = DBGP_EPADDR(pipe->devnum, pipe->endpoint);
- pids = DBGP_PID_SET(pipe->pid, USB_PID_SETUP);
-
- ctrl = read32((unsigned long)&ehci_debug->control);
- ctrl = DBGP_LEN_UPDATE(ctrl, sizeof(req));
- ctrl |= DBGP_OUT;
-
- /* Setup stage */
- dbgp_set_data(ehci_debug, &req, sizeof(req));
- write32((unsigned long)&ehci_debug->address, addr);
- write32((unsigned long)&ehci_debug->pids, pids);
- ret = dbgp_wait_until_done(ehci_debug, pipe, ctrl, 1);
- if (ret < 0)
- return ret;
-
- /* Data stage (optional) */
- if (read && size)
- ret = dbgp_bulk_read(ehci_debug, pipe, data, size);
- else if (!read && size)
- ret = dbgp_bulk_write(ehci_debug, pipe, data, size);
-
- /* Status stage in opposite direction */
- pipe->pid = USB_PID_DATA1;
- ctrl = read32((unsigned long)&ehci_debug->control);
- ctrl = DBGP_LEN_UPDATE(ctrl, 0);
- if (read) {
- pids = DBGP_PID_SET(pipe->pid, USB_PID_OUT);
- ctrl |= DBGP_OUT;
- } else {
- pids = DBGP_PID_SET(pipe->pid, USB_PID_IN);
- ctrl &= ~DBGP_OUT;
- }
-
- write32((unsigned long)&ehci_debug->pids, pids);
- ret2 = dbgp_wait_until_done(ehci_debug, pipe, ctrl, pipe->timeout);
- if (ret2 < 0)
- return ret2;
-
- return ret;
-}
-
-static int ehci_reset_port(struct ehci_regs *ehci_regs, int port)
-{
- u32 portsc;
- u32 delay_time, delay_ms;
- int loop;
-
- /* Reset the usb debug port */
- portsc = read32((unsigned long)&ehci_regs->port_status[port - 1]);
- portsc &= ~PORT_PE;
- portsc |= PORT_RESET;
- write32((unsigned long)&ehci_regs->port_status[port - 1], portsc);
-
- delay_ms = HUB_ROOT_RESET_TIME;
- for (delay_time = 0; delay_time < HUB_RESET_TIMEOUT;
- delay_time += delay_ms) {
- dbgp_mdelay(delay_ms);
-
- portsc = read32((unsigned long)&ehci_regs->port_status[port - 1]);
- if (portsc & PORT_RESET) {
- /* force reset to complete */
- loop = 2;
- write32((unsigned long)&ehci_regs->port_status[port - 1],
- portsc & ~(PORT_RWC_BITS | PORT_RESET));
- do {
- dbgp_mdelay(delay_ms);
- portsc = read32((unsigned long)&ehci_regs->port_status[port - 1]);
- delay_time += delay_ms;
- } while ((portsc & PORT_RESET) && (--loop > 0));
- if (!loop) {
- printk(BIOS_DEBUG, "ehci_reset_port forced done");
- }
- }
-
- /* Device went away? */
- if (!(portsc & PORT_CONNECT))
- return -1; //-ENOTCONN;
-
- /* bomb out completely if something weird happened */
- if ((portsc & PORT_CSC))
- return -2; //-EINVAL;
-
- /* If we've finished resetting, then break out of the loop */
- if (!(portsc & PORT_RESET) && (portsc & PORT_PE))
- return 0;
- }
- return -3; //-EBUSY;
-}
-
-static int ehci_wait_for_port(struct ehci_regs *ehci_regs, int port)
-{
- u32 status;
- int ret, reps;
-
- for (reps = 0; reps < 3; reps++) {
- dbgp_mdelay(100);
- status = read32((unsigned long)&ehci_regs->status);
- if (status & STS_PCD) {
- ret = ehci_reset_port(ehci_regs, port);
- if (ret == 0)
- return 0;
- }
- }
- 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 void enable_usbdebug(void)
-{
-#if defined(__PRE_RAM__) || !CONFIG_USBDEBUG_IN_ROMSTAGE
- pci_devfn_t dbg_dev = pci_ehci_dbg_dev(CONFIG_USBDEBUG_HCD_INDEX);
- pci_ehci_dbg_enable(dbg_dev, CONFIG_EHCI_BAR);
-#endif
-}
-
-static void set_debug_port(unsigned int port)
-{
- pci_devfn_t dbg_dev = pci_ehci_dbg_dev(CONFIG_USBDEBUG_HCD_INDEX);
- pci_ehci_dbg_set_port(dbg_dev, port);
-}
-
-static int usbdebug_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;
-
- struct usb_debug_descriptor dbgp_desc;
- u32 cmd, ctrl, status, portsc, hcs_params;
- u32 debug_port, new_debug_port = 0, n_ports;
- u32 devnum;
- int ret, i, configured;
- int loop;
- int port_map_tried;
- int playtimes = 3;
-
- 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));
-
- if (CONFIG_USBDEBUG_DEFAULT_PORT > 0)
- set_debug_port(CONFIG_USBDEBUG_DEFAULT_PORT);
- else
- set_debug_port(1);
-
-try_next_time:
- port_map_tried = 0;
-
-try_next_port:
- hcs_params = read32((unsigned long)&ehci_caps->hcs_params);
- debug_port = HCS_DEBUG_PORT(hcs_params);
- n_ports = HCS_N_PORTS(hcs_params);
-
- dprintk(BIOS_INFO, "ehci_bar: 0x%x\n", ehci_bar);
- dprintk(BIOS_INFO, "debug_port: %d\n", debug_port);
- dprintk(BIOS_INFO, "n_ports: %d\n", n_ports);
-
- for (i = 1; i <= n_ports; i++) {
- portsc = read32((unsigned long)&ehci_regs->port_status[i-1]);
- dprintk(BIOS_INFO, "PORTSC #%d: %08x\n", i, portsc);
- }
-
- if(port_map_tried && (new_debug_port != debug_port)) {
- if(--playtimes) {
- set_debug_port(debug_port);
- goto try_next_time;
- }
- return -1;
- }
-
- /* Wait until the controller is halted */
- status = read32((unsigned long)&ehci_regs->status);
- if (!(status & STS_HALT)) {
- cmd = read32((unsigned long)&ehci_regs->command);
- cmd &= ~CMD_RUN;
- write32((unsigned long)&ehci_regs->command, cmd);
- loop = 100;
- do {
- dbgp_mdelay(10);
- status = read32((unsigned long)&ehci_regs->status);
- } while (!(status & STS_HALT) && (--loop > 0));
- if (status & STS_HALT)
- dprintk(BIOS_INFO, "EHCI controller halted successfully.\n");
- else
- dprintk(BIOS_INFO, "EHCI controller is not halted. Reset may fail.\n");
- }
-
- loop = 100;
- /* Reset the EHCI controller */
- cmd = read32((unsigned long)&ehci_regs->command);
- cmd |= CMD_RESET;
- write32((unsigned long)&ehci_regs->command, cmd);
- do {
- dbgp_mdelay(10);
- cmd = read32((unsigned long)&ehci_regs->command);
- } while ((cmd & CMD_RESET) && (--loop > 0));
-
- if(!loop) {
- dprintk(BIOS_INFO, "Could not reset EHCI controller.\n");
- // on some systems it works without succeeding here.
- // return -2;
- } else {
- dprintk(BIOS_INFO, "EHCI controller reset successfully.\n");
- }
-
- /* Claim ownership, but do not enable yet */
- ctrl = read32((unsigned long)&ehci_debug->control);
- ctrl |= DBGP_OWNER;
- ctrl &= ~(DBGP_ENABLED | DBGP_INUSE);
- write32((unsigned long)&ehci_debug->control, ctrl);
-
- /* Start EHCI controller */
- cmd = read32((unsigned long)&ehci_regs->command);
- cmd &= ~(CMD_LRESET | CMD_IAAD | CMD_PSE | CMD_ASE | CMD_RESET);
- cmd |= CMD_RUN;
- write32((unsigned long)&ehci_regs->command, cmd);
-
- /* Ensure everything is routed to the EHCI */
- write32((unsigned long)&ehci_regs->configured_flag, FLAG_CF);
-
- /* Wait until the controller is no longer halted */
- loop = 10;
- do {
- dbgp_mdelay(10);
- status = read32((unsigned long)&ehci_regs->status);
- } while ((status & STS_HALT) && (--loop > 0));
-
- if(!loop) {
- dprintk(BIOS_INFO, "EHCI could not be started.\n");
- return -3;
- }
- dprintk(BIOS_INFO, "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) {
- dprintk(BIOS_INFO, "No device found in debug port %d\n", debug_port);
- goto next_debug_port;
- }
- dprintk(BIOS_INFO, "EHCI done waiting for port.\n");
-
- /* Enable the debug port */
- ctrl = read32((unsigned long)&ehci_debug->control);
- ctrl |= DBGP_CLAIM;
- write32((unsigned long)&ehci_debug->control, ctrl);
- ctrl = read32((unsigned long)&ehci_debug->control);
- if ((ctrl & DBGP_CLAIM) != DBGP_CLAIM) {
- dprintk(BIOS_INFO, "No device in EHCI debug port.\n");
- write32((unsigned long)&ehci_debug->control, ctrl & ~DBGP_CLAIM);
- ret = -4;
- goto err;
- }
- dprintk(BIOS_INFO, "EHCI debug port enabled.\n");
-
- /* Completely transfer the debug device to the debug controller */
- portsc = read32((unsigned long)&ehci_regs->port_status[debug_port - 1]);
- portsc &= ~PORT_PE;
- write32((unsigned long)&ehci_regs->port_status[debug_port - 1], portsc);
-
- dbgp_mdelay(100);
-
-#if CONFIG_USBDEBUG_OPTIONAL_HUB_PORT
- ret = dbgp_hub_enable(ehci_debug, CONFIG_USBDEBUG_OPTIONAL_HUB_PORT);
- if (ret < 0) {
- dprintk(BIOS_INFO, "Could not enable USB hub on debug port.\n");
- ret = -6;
- goto err;
- }
-#endif
-
- /* Find the debug device and make it device number 127 */
- devnum = 0;
-debug_dev_retry:
- memset(&dbgp_desc, 0, sizeof(dbgp_desc));
- 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 == sizeof(dbgp_desc)) {
- if (dbgp_desc.bLength == sizeof(dbgp_desc) && dbgp_desc.bDescriptorType==USB_DT_DEBUG)
- goto debug_dev_found;
- else
- dprintk(BIOS_INFO, "Invalid debug device descriptor.\n");
- }
- if (devnum == 0) {
- devnum = USB_DEBUG_DEVNUM;
- goto debug_dev_retry;
- } else {
- dprintk(BIOS_INFO, "Could not find attached debug device.\n");
- ret = -5;
- goto err;
- }
-debug_dev_found:
-
- /* 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, NULL, 0);
- if (ret < 0) {
- dprintk(BIOS_INFO, "Could not move attached device to %d.\n",
- USB_DEBUG_DEVNUM);
- ret = -7;
- goto err;
- }
- devnum = USB_DEBUG_DEVNUM;
- dprintk(BIOS_INFO, "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, NULL, 0);
- if (ret < 0) {
- dprintk(BIOS_INFO, "Could not enable EHCI debug device.\n");
- ret = -8;
- goto err;
- }
- dprintk(BIOS_INFO, "EHCI debug interface enabled.\n");
-
- /* Prepare endpoint pipes. */
- for (i=1; i<DBGP_MAX_ENDPOINTS; i++) {
- info->ep_pipe[i].devnum = USB_DEBUG_DEVNUM;
- info->ep_pipe[i].pid = USB_PID_DATA0;
- info->ep_pipe[i].timeout = 1000;
- }
- info->ep_pipe[DBGP_CONSOLE_EPOUT].endpoint = dbgp_desc.bDebugOutEndpoint;
- info->ep_pipe[DBGP_CONSOLE_EPIN].endpoint = dbgp_desc.bDebugInEndpoint;
-
- /* Perform a small write. */
- configured = 0;
-small_write:
- ret = dbgp_bulk_write(ehci_debug, &info->ep_pipe[DBGP_CONSOLE_EPOUT], "USB\r\n",5);
- if (ret < 0) {
- dprintk(BIOS_INFO, "dbgp_bulk_write failed: %d\n", ret);
- if (!configured) {
- /* Send Set Configure request to device. This is required for FX2
- (CY7C68013) to transfer from USB state Addressed to Configured,
- only then endpoints other than 0 are enabled. */
- if (dbgp_control_msg(ehci_debug, USB_DEBUG_DEVNUM,
- USB_DIR_OUT | USB_TYPE_STANDARD | USB_RECIP_DEVICE,
- USB_REQ_SET_CONFIGURATION, 1, 0, NULL, 0) >= 0) {
- configured = 1;
- goto small_write;
- }
- }
- ret = -9;
- goto err;
- }
- 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;
- return 0;
-err:
- /* Things didn't work so remove my claim */
- ctrl = read32((unsigned long)&ehci_debug->control);
- ctrl &= ~(DBGP_CLAIM | DBGP_OUT);
- write32((unsigned long)(unsigned long)&ehci_debug->control, ctrl);
- //return ret;
-
-next_debug_port:
-#if CONFIG_USBDEBUG_DEFAULT_PORT==0
- port_map_tried |= (1 << (debug_port - 1));
- new_debug_port = ((debug_port-1 + 1) % n_ports) + 1;
- if (port_map_tried != ((1 << n_ports) - 1)) {
- set_debug_port(new_debug_port);
- goto try_next_port;
- }
- if (--playtimes) {
- set_debug_port(new_debug_port);
- goto try_next_time;
- }
-#else
- if (0)
- goto try_next_port;
- if (--playtimes)
- goto try_next_time;
-#endif
-
- return -10;
-}
-
-#if CONFIG_DEBUG_USBDEBUG
-static int dbgp_enabled(void)
-{
- struct dbgp_pipe *globals = &dbgp_ehci_info()->ep_pipe[DBGP_SETUP_EP0];
- return (globals->status & DBGP_EP_ENABLED);
-}
-#endif
-
-static int dbgp_try_get(struct dbgp_pipe *pipe)
-{
- struct dbgp_pipe *globals = &dbgp_ehci_info()->ep_pipe[DBGP_SETUP_EP0];
- if (!dbgp_ep_is_active(pipe) || (globals->status & DBGP_EP_BUSY))
- return 0;
- globals->status |= DBGP_EP_BUSY;
- pipe->status |= DBGP_EP_BUSY;
- return 1;
-}
-
-static void dbgp_put(struct dbgp_pipe *pipe)
-{
- struct dbgp_pipe *globals = &dbgp_ehci_info()->ep_pipe[DBGP_SETUP_EP0];
- globals->status &= ~DBGP_EP_BUSY;
- pipe->status &= ~DBGP_EP_BUSY;
-}
-
-void usbdebug_tx_byte(struct dbgp_pipe *pipe, unsigned char data)
-{
- if (!dbgp_try_get(pipe))
- return;
- pipe->buf[pipe->bufidx++] = data;
- if (pipe->bufidx >= 8) {
- dbgp_bulk_write_x(pipe, pipe->buf, pipe->bufidx);
- pipe->bufidx = 0;
- }
- dbgp_put(pipe);
-}
-
-void usbdebug_tx_flush(struct dbgp_pipe *pipe)
-{
- if (!dbgp_try_get(pipe))
- return;
- if (pipe->bufidx > 0) {
- dbgp_bulk_write_x(pipe, pipe->buf, pipe->bufidx);
- pipe->bufidx = 0;
- }
- dbgp_put(pipe);
-}
-
-#if !defined(__PRE_RAM__) && !defined(__SMM__)
-static void usbdebug_re_enable(unsigned ehci_base)
-{
- struct ehci_debug_info *dbg_info = dbgp_ehci_info();
- unsigned diff;
- int i;
-
- if (!dbg_info->ehci_debug)
- return;
-
- diff = (unsigned)dbg_info->ehci_caps - ehci_base;
- dbg_info->ehci_regs -= diff;
- dbg_info->ehci_debug -= diff;
- dbg_info->ehci_caps = (void*)ehci_base;
-
- for (i=0; i<DBGP_MAX_ENDPOINTS; i++)
- dbg_info->ep_pipe[i].status |= DBGP_EP_ENABLED;
-}
-
-static void usbdebug_disable(void)
-{
- struct ehci_debug_info *dbg_info = dbgp_ehci_info();
- int i;
- for (i=0; i<DBGP_MAX_ENDPOINTS; i++)
- dbg_info->ep_pipe[i].status &= ~DBGP_EP_ENABLED;
-}
-
-static void pci_ehci_set_resources(struct device *dev)
-{
- struct resource *res;
-
- printk(BIOS_DEBUG, "%s EHCI Debug Port hook triggered\n", dev_path(dev));
- usbdebug_disable();
-
- if (ehci_drv_ops->set_resources)
- ehci_drv_ops->set_resources(dev);
- res = find_resource(dev, EHCI_BAR_INDEX);
- if (!res)
- return;
-
- usbdebug_re_enable((u32)res->base);
- report_resource_stored(dev, res, "");
- printk(BIOS_DEBUG, "%s EHCI Debug Port relocated\n", dev_path(dev));
-}
-
-void pci_ehci_read_resources(struct device *dev)
-{
- pci_devfn_t dbg_dev = pci_ehci_dbg_dev(CONFIG_USBDEBUG_HCD_INDEX);
-
- if (!ehci_drv_ops && pci_match_simple_dev(dev, dbg_dev)) {
- memcpy(&ehci_dbg_ops, dev->ops, sizeof(ehci_dbg_ops));
- ehci_drv_ops = dev->ops;
- ehci_dbg_ops.set_resources = pci_ehci_set_resources;
- dev->ops = &ehci_dbg_ops;
- printk(BIOS_DEBUG, "%s EHCI BAR hook registered\n", dev_path(dev));
- } else {
- printk(BIOS_DEBUG, "More than one caller of %s from %s\n", __func__, dev_path(dev));
- }
-
- pci_dev_read_resources(dev);
-}
-#endif
-
-#if !defined(__PRE_RAM__) && !defined(__SMM__)
-static int get_usbdebug_from_cbmem(struct ehci_debug_info *info)
-{
- struct ehci_debug_info *dbg_info_cbmem;
-
- dbg_info_cbmem = cbmem_find(CBMEM_ID_EHCI_DEBUG);
- if (dbg_info_cbmem == NULL)
- return -1;
-
- memcpy(info, dbg_info_cbmem, sizeof (*info));
- printk(BIOS_DEBUG, "EHCI debug port found in CBMEM.\n");
-
- return 0;
-}
-
-#elif defined(__PRE_RAM__)
-static void migrate_ehci_debug(void)
-{
- struct ehci_debug_info *dbg_info = dbgp_ehci_info();
- struct ehci_debug_info *dbg_info_cbmem;
-
- dbg_info_cbmem = cbmem_add(CBMEM_ID_EHCI_DEBUG, sizeof(*dbg_info));
- if (dbg_info_cbmem == NULL)
- return;
-
- memcpy(dbg_info_cbmem, dbg_info, sizeof(*dbg_info));
-}
-CAR_MIGRATE(migrate_ehci_debug);
-#endif
-
-unsigned long pci_ehci_base_regs(pci_devfn_t sdev)
-{
-#ifdef __SIMPLE_DEVICE__
- unsigned long base = pci_read_config32(sdev, EHCI_BAR_INDEX) & ~0x0f;
-#else
- device_t dev = dev_find_slot(PCI_DEV2SEGBUS(sdev), PCI_DEV2DEVFN(sdev));
- unsigned long base = pci_read_config32(dev, EHCI_BAR_INDEX) & ~0x0f;
-#endif
- return base + HC_LENGTH(read32(base));
-}
-
-int dbgp_ep_is_active(struct dbgp_pipe *pipe)
-{
- return (pipe->status & DBGP_EP_STATMASK) == (DBGP_EP_VALID | DBGP_EP_ENABLED);
-}
-
-struct dbgp_pipe *dbgp_console_output(void)
-{
- return &dbgp_ehci_info()->ep_pipe[DBGP_CONSOLE_EPOUT];
-}
-
-struct dbgp_pipe *dbgp_console_input(void)
-{
- return &dbgp_ehci_info()->ep_pipe[DBGP_CONSOLE_EPIN];
-}
-
-int usbdebug_init(void)
-{
- struct ehci_debug_info *dbg_info = dbgp_ehci_info();
-
-#if !defined(__PRE_RAM__) && !defined(__SMM__)
- if (!get_usbdebug_from_cbmem(dbg_info))
- return 0;
-#endif
- enable_usbdebug();
- return usbdebug_init_(CONFIG_EHCI_BAR, CONFIG_EHCI_DEBUG_OFFSET, dbg_info);
-}