diff options
Diffstat (limited to 'src/drivers/usb')
| -rw-r--r-- | src/drivers/usb/Makefile.inc | 3 | ||||
| -rw-r--r-- | src/drivers/usb/ehci.h | 200 | ||||
| -rw-r--r-- | src/drivers/usb/ehci_debug.c | 1044 | ||||
| -rw-r--r-- | src/drivers/usb/usb_ch9.h | 102 |
4 files changed, 1349 insertions, 0 deletions
diff --git a/src/drivers/usb/Makefile.inc b/src/drivers/usb/Makefile.inc new file mode 100644 index 0000000000..43931a9c09 --- /dev/null +++ b/src/drivers/usb/Makefile.inc @@ -0,0 +1,3 @@ +romstage-$(CONFIG_USBDEBUG_IN_ROMSTAGE) += ehci_debug.c + +ramstage-$(CONFIG_USBDEBUG) += ehci_debug.c diff --git a/src/drivers/usb/ehci.h b/src/drivers/usb/ehci.h new file mode 100644 index 0000000000..f9203522a5 --- /dev/null +++ b/src/drivers/usb/ehci.h @@ -0,0 +1,200 @@ +/* + * This file is part of the coreboot project. + * + * It was taken from the Linux kernel (include/linux/usb/ehci_def.h). + * + * Copyright (C) 2001-2002 David Brownell + * + * 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; either version 2 of the License, or (at your + * option) any later version. + * + * 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., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#ifndef EHCI_H +#define EHCI_H + +/* EHCI register interface, corresponds to EHCI Revision 0.95 specification */ + +/* Section 2.2 Host Controller Capability Registers */ +struct ehci_caps { + /* these fields are specified as 8 and 16 bit registers, + * but some hosts can't perform 8 or 16 bit PCI accesses. + */ + u32 hc_capbase; +#define HC_LENGTH(p) (((p)>>00)&0x00ff) /* bits 7:0 */ +#define HC_VERSION(p) (((p)>>16)&0xffff) /* bits 31:16 */ + u32 hcs_params; /* HCSPARAMS - offset 0x4 */ +#define HCS_DEBUG_PORT(p) (((p)>>20)&0xf) /* bits 23:20, debug port? */ +#define HCS_INDICATOR(p) ((p)&(1 << 16)) /* true: has port indicators */ +#define HCS_N_CC(p) (((p)>>12)&0xf) /* bits 15:12, #companion HCs */ +#define HCS_N_PCC(p) (((p)>>8)&0xf) /* bits 11:8, ports per CC */ +#define HCS_PORTROUTED(p) ((p)&(1 << 7)) /* true: port routing */ +#define HCS_PPC(p) ((p)&(1 << 4)) /* true: port power control */ +#define HCS_N_PORTS(p) (((p)>>0)&0xf) /* bits 3:0, ports on HC */ + + u32 hcc_params; /* HCCPARAMS - offset 0x8 */ +/* EHCI 1.1 addendum */ +#define HCC_32FRAME_PERIODIC_LIST(p) ((p)&(1 << 19)) +#define HCC_PER_PORT_CHANGE_EVENT(p) ((p)&(1 << 18)) +#define HCC_LPM(p) ((p)&(1 << 17)) +#define HCC_HW_PREFETCH(p) ((p)&(1 << 16)) + +#define HCC_EXT_CAPS(p) (((p)>>8)&0xff) /* for pci extended caps */ +#define HCC_ISOC_CACHE(p) ((p)&(1 << 7)) /* true: can cache isoc frame */ +#define HCC_ISOC_THRES(p) (((p)>>4)&0x7) /* bits 6:4, uframes cached */ +#define HCC_CANPARK(p) ((p)&(1 << 2)) /* true: can park on async qh */ +#define HCC_PGM_FRAMELISTLEN(p) ((p)&(1 << 1)) /* true: periodic_size changes*/ +#define HCC_64BIT_ADDR(p) ((p)&(1)) /* true: can use 64-bit addr */ + u8 portroute[8]; /* nibbles for routing - offset 0xC */ +} __attribute__ ((packed)); + + +/* Section 2.3 Host Controller Operational Registers */ +struct ehci_regs { + + /* USBCMD: offset 0x00 */ + u32 command; + +/* EHCI 1.1 addendum */ +#define CMD_HIRD (0xf<<24) /* host initiated resume duration */ +#define CMD_PPCEE (1<<15) /* per port change event enable */ +#define CMD_FSP (1<<14) /* fully synchronized prefetch */ +#define CMD_ASPE (1<<13) /* async schedule prefetch enable */ +#define CMD_PSPE (1<<12) /* periodic schedule prefetch enable */ +/* 23:16 is r/w intr rate, in microframes; default "8" == 1/msec */ +#define CMD_PARK (1<<11) /* enable "park" on async qh */ +#define CMD_PARK_CNT(c) (((c)>>8)&3) /* how many transfers to park for */ +#define CMD_LRESET (1<<7) /* partial reset (no ports, etc) */ +#define CMD_IAAD (1<<6) /* "doorbell" interrupt async advance */ +#define CMD_ASE (1<<5) /* async schedule enable */ +#define CMD_PSE (1<<4) /* periodic schedule enable */ +/* 3:2 is periodic frame list size */ +#define CMD_RESET (1<<1) /* reset HC not bus */ +#define CMD_RUN (1<<0) /* start/stop HC */ + + /* USBSTS: offset 0x04 */ + u32 status; +#define STS_PPCE_MASK (0xff<<16) /* Per-Port change event 1-16 */ +#define STS_ASS (1<<15) /* Async Schedule Status */ +#define STS_PSS (1<<14) /* Periodic Schedule Status */ +#define STS_RECL (1<<13) /* Reclamation */ +#define STS_HALT (1<<12) /* Not running (any reason) */ +/* some bits reserved */ + /* these STS_* flags are also intr_enable bits (USBINTR) */ +#define STS_IAA (1<<5) /* Interrupted on async advance */ +#define STS_FATAL (1<<4) /* such as some PCI access errors */ +#define STS_FLR (1<<3) /* frame list rolled over */ +#define STS_PCD (1<<2) /* port change detect */ +#define STS_ERR (1<<1) /* "error" completion (overflow, ...) */ +#define STS_INT (1<<0) /* "normal" completion (short, ...) */ + + /* USBINTR: offset 0x08 */ + u32 intr_enable; + + /* FRINDEX: offset 0x0C */ + u32 frame_index; /* current microframe number */ + /* CTRLDSSEGMENT: offset 0x10 */ + u32 segment; /* address bits 63:32 if needed */ + /* PERIODICLISTBASE: offset 0x14 */ + u32 frame_list; /* points to periodic list */ + /* ASYNCLISTADDR: offset 0x18 */ + u32 async_next; /* address of next async queue head */ + + u32 reserved[9]; + + /* CONFIGFLAG: offset 0x40 */ + u32 configured_flag; +#define FLAG_CF (1<<0) /* true: we'll support "high speed" */ + + /* PORTSC: offset 0x44 */ + u32 port_status[0]; /* up to N_PORTS */ +/* EHCI 1.1 addendum */ +#define PORTSC_SUSPEND_STS_ACK 0 +#define PORTSC_SUSPEND_STS_NYET 1 +#define PORTSC_SUSPEND_STS_STALL 2 +#define PORTSC_SUSPEND_STS_ERR 3 + +#define PORT_DEV_ADDR (0x7f<<25) /* device address */ +#define PORT_SSTS (0x3<<23) /* suspend status */ +/* 31:23 reserved */ +#define PORT_WKOC_E (1<<22) /* wake on overcurrent (enable) */ +#define PORT_WKDISC_E (1<<21) /* wake on disconnect (enable) */ +#define PORT_WKCONN_E (1<<20) /* wake on connect (enable) */ +/* 19:16 for port testing */ +#define PORT_TEST_PKT (0x4<<16) /* Port Test Control - packet test */ +#define PORT_LED_OFF (0<<14) +#define PORT_LED_AMBER (1<<14) +#define PORT_LED_GREEN (2<<14) +#define PORT_LED_MASK (3<<14) +#define PORT_OWNER (1<<13) /* true: companion hc owns this port */ +#define PORT_POWER (1<<12) /* true: has power (see PPC) */ +#define PORT_USB11(x) (((x)&(3<<10)) == (1<<10)) /* USB 1.1 device */ +/* 11:10 for detecting lowspeed devices (reset vs release ownership) */ +/* 9 reserved */ +#define PORT_LPM (1<<9) /* LPM transaction */ +#define PORT_RESET (1<<8) /* reset port */ +#define PORT_SUSPEND (1<<7) /* suspend port */ +#define PORT_RESUME (1<<6) /* resume it */ +#define PORT_OCC (1<<5) /* over current change */ +#define PORT_OC (1<<4) /* over current active */ +#define PORT_PEC (1<<3) /* port enable change */ +#define PORT_PE (1<<2) /* port enable */ +#define PORT_CSC (1<<1) /* connect status change */ +#define PORT_CONNECT (1<<0) /* device connected */ +#define PORT_RWC_BITS (PORT_CSC | PORT_PEC | PORT_OCC) +} __attribute__ ((packed)); + +#define USBMODE 0x68 /* USB Device mode */ +#define USBMODE_SDIS (1<<3) /* Stream disable */ +#define USBMODE_BE (1<<2) /* BE/LE endianness select */ +#define USBMODE_CM_HC (3<<0) /* host controller mode */ +#define USBMODE_CM_IDLE (0<<0) /* idle state */ + +/* Moorestown has some non-standard registers, partially due to the fact that + * its EHCI controller has both TT and LPM support. HOSTPCx are extensions to + * PORTSCx + */ +#define HOSTPC0 0x84 /* HOSTPC extension */ +#define HOSTPC_PHCD (1<<22) /* Phy clock disable */ +#define HOSTPC_PSPD (3<<25) /* Port speed detection */ +#define USBMODE_EX 0xc8 /* USB Device mode extension */ +#define USBMODE_EX_VBPS (1<<5) /* VBus Power Select On */ +#define USBMODE_EX_HC (3<<0) /* host controller mode */ +#define TXFILLTUNING 0x24 /* TX FIFO Tuning register */ +#define TXFIFO_DEFAULT (8<<16) /* FIFO burst threshold 8 */ + +/* Appendix C, Debug port ... intended for use with special "debug devices" + * that can help if there's no serial console. (nonstandard enumeration.) + */ +struct ehci_dbg_port { + u32 control; +#define DBGP_OWNER (1<<30) +#define DBGP_ENABLED (1<<28) +#define DBGP_DONE (1<<16) +#define DBGP_INUSE (1<<10) +#define DBGP_ERRCODE(x) (((x)>>7)&0x07) +# define DBGP_ERR_BAD 1 +# define DBGP_ERR_SIGNAL 2 +#define DBGP_ERROR (1<<6) +#define DBGP_GO (1<<5) +#define DBGP_OUT (1<<4) +#define DBGP_LEN(x) (((x)>>0)&0x0f) + u32 pids; +#define DBGP_PID_GET(x) (((x)>>16)&0xff) +#define DBGP_PID_SET(data, tok) (((data)<<8)|(tok)) + u32 data03; + u32 data47; + u32 address; +#define DBGP_EPADDR(dev, ep) (((dev)<<8)|(ep)) +} __attribute__ ((packed)); +#endif diff --git a/src/drivers/usb/ehci_debug.c b/src/drivers/usb/ehci_debug.c new file mode 100644 index 0000000000..94625c0e1a --- /dev/null +++ b/src/drivers/usb/ehci_debug.c @@ -0,0 +1,1044 @@ +/* + * 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 <console/usb.h> +#include <device/pci_ehci.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" + + +#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); +} diff --git a/src/drivers/usb/usb_ch9.h b/src/drivers/usb/usb_ch9.h new file mode 100644 index 0000000000..b0aa7730f7 --- /dev/null +++ b/src/drivers/usb/usb_ch9.h @@ -0,0 +1,102 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2007 AMD + * Written by Yinghai Lu <yinghai.lu@amd.com> for 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 + */ + +#ifndef USB_CH9_H +#define USB_CH9_H + +#define USB_DIR_OUT 0 /* to device */ +#define USB_DIR_IN 0x80 /* to host */ + +/* + * USB types, the second of three bRequestType fields + */ +#define USB_TYPE_MASK (0x03 << 5) +#define USB_TYPE_STANDARD (0x00 << 5) +#define USB_TYPE_CLASS (0x01 << 5) +#define USB_TYPE_VENDOR (0x02 << 5) +#define USB_TYPE_RESERVED (0x03 << 5) +/* + * USB recipients, the third of three bRequestType fields + */ +#define USB_RECIP_MASK 0x1f +#define USB_RECIP_DEVICE 0x00 +#define USB_RECIP_INTERFACE 0x01 +#define USB_RECIP_ENDPOINT 0x02 +#define USB_RECIP_OTHER 0x03 +/* From Wireless USB 1.0 */ +#define USB_RECIP_PORT 0x04 +#define USB_RECIP_RPIPE 0x05 + +/* + * Standard requests, for the bRequest field of a SETUP packet. + * + * These are qualified by the bRequestType field, so that for example + * TYPE_CLASS or TYPE_VENDOR specific feature flags could be retrieved + * by a GET_STATUS request. + */ +#define USB_REQ_GET_STATUS 0x00 +#define USB_REQ_CLEAR_FEATURE 0x01 +#define USB_REQ_SET_FEATURE 0x03 +#define USB_REQ_SET_ADDRESS 0x05 +#define USB_REQ_GET_DESCRIPTOR 0x06 +#define USB_REQ_SET_DESCRIPTOR 0x07 +#define USB_REQ_GET_CONFIGURATION 0x08 +#define USB_REQ_SET_CONFIGURATION 0x09 +#define USB_REQ_GET_INTERFACE 0x0A +#define USB_REQ_SET_INTERFACE 0x0B +#define USB_REQ_SYNCH_FRAME 0x0C + +#define USB_REQ_SET_ENCRYPTION 0x0D /* Wireless USB */ +#define USB_REQ_GET_ENCRYPTION 0x0E +#define USB_REQ_RPIPE_ABORT 0x0E +#define USB_REQ_SET_HANDSHAKE 0x0F +#define USB_REQ_RPIPE_RESET 0x0F +#define USB_REQ_GET_HANDSHAKE 0x10 +#define USB_REQ_SET_CONNECTION 0x11 +#define USB_REQ_SET_SECURITY_DATA 0x12 +#define USB_REQ_GET_SECURITY_DATA 0x13 +#define USB_REQ_SET_WUSB_DATA 0x14 +#define USB_REQ_LOOPBACK_DATA_WRITE 0x15 +#define USB_REQ_LOOPBACK_DATA_READ 0x16 +#define USB_REQ_SET_INTERFACE_DS 0x17 + +#define USB_DT_DEBUG 0x0a + +#define USB_DEVICE_DEBUG_MODE 6 /* (special devices only) */ + +struct usb_ctrlrequest { + u8 bRequestType; + u8 bRequest; + u16 wValue; + u16 wIndex; + u16 wLength; +} __attribute__ ((packed)); + +struct usb_debug_descriptor { + u8 bLength; + u8 bDescriptorType; + + /* bulk endpoints with 8 byte maxpacket */ + u8 bDebugInEndpoint; + u8 bDebugOutEndpoint; +}; + +#endif + |