Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: (142 commits) USB: Fix sysfs paths in documentation USB: skeleton: fix coding style issues. USB: O_NONBLOCK in read path of skeleton USB: make usb-skeleton honor O_NONBLOCK in write path USB: skel_read really sucks royally USB: Add hub descriptor update hook for xHCI USB: xhci: Support USB hubs. USB: xhci: Set multi-TT field for LS/FS devices under hubs. USB: xhci: Set route string for all devices. USB: xhci: Fix command wait list handling. USB: xhci: Change how xHCI commands are handled. USB: xhci: Refactor input device context setup. USB: xhci: Endpoint representation refactoring. USB: gadget: ether needs to select CRC32 USB: fix USBTMC get_capabilities success handling USB: fix missing error check in probing USB: usbfs: add USBDEVFS_URB_BULK_CONTINUATION flag USB: support for autosuspend in sierra while online USB: ehci-dbgp,ehci: Allow dbpg to work with suspend/resume USB: ehci-dbgp,documentation: Documentation updates for ehci-dbgp ...
This commit is contained in:
Linus Torvalds
@@ -160,721 +160,6 @@ static struct console early_serial_console = {
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.index = -1,
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};
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#ifdef CONFIG_EARLY_PRINTK_DBGP
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static struct ehci_caps __iomem *ehci_caps;
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static struct ehci_regs __iomem *ehci_regs;
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static struct ehci_dbg_port __iomem *ehci_debug;
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static unsigned int dbgp_endpoint_out;
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struct ehci_dev {
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u32 bus;
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u32 slot;
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u32 func;
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};
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static struct ehci_dev ehci_dev;
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#define USB_DEBUG_DEVNUM 127
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#define DBGP_DATA_TOGGLE 0x8800
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static inline u32 dbgp_pid_update(u32 x, u32 tok)
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{
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return ((x ^ DBGP_DATA_TOGGLE) & 0xffff00) | (tok & 0xff);
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}
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static inline u32 dbgp_len_update(u32 x, u32 len)
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{
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return (x & ~0x0f) | (len & 0x0f);
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}
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/*
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* USB Packet IDs (PIDs)
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*/
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/* token */
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#define USB_PID_OUT 0xe1
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#define USB_PID_IN 0x69
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#define USB_PID_SOF 0xa5
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#define USB_PID_SETUP 0x2d
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/* handshake */
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#define USB_PID_ACK 0xd2
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#define USB_PID_NAK 0x5a
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#define USB_PID_STALL 0x1e
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#define USB_PID_NYET 0x96
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/* data */
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#define USB_PID_DATA0 0xc3
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#define USB_PID_DATA1 0x4b
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#define USB_PID_DATA2 0x87
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#define USB_PID_MDATA 0x0f
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/* Special */
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#define USB_PID_PREAMBLE 0x3c
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#define USB_PID_ERR 0x3c
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#define USB_PID_SPLIT 0x78
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#define USB_PID_PING 0xb4
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#define USB_PID_UNDEF_0 0xf0
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#define USB_PID_DATA_TOGGLE 0x88
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#define DBGP_CLAIM (DBGP_OWNER | DBGP_ENABLED | DBGP_INUSE)
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#define PCI_CAP_ID_EHCI_DEBUG 0xa
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#define HUB_ROOT_RESET_TIME 50 /* times are in msec */
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#define HUB_SHORT_RESET_TIME 10
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#define HUB_LONG_RESET_TIME 200
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#define HUB_RESET_TIMEOUT 500
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#define DBGP_MAX_PACKET 8
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static int dbgp_wait_until_complete(void)
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{
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u32 ctrl;
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int loop = 0x100000;
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do {
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ctrl = readl(&ehci_debug->control);
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/* Stop when the transaction is finished */
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if (ctrl & DBGP_DONE)
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break;
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} while (--loop > 0);
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if (!loop)
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return -1;
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/*
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* Now that we have observed the completed transaction,
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* clear the done bit.
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*/
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writel(ctrl | DBGP_DONE, &ehci_debug->control);
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return (ctrl & DBGP_ERROR) ? -DBGP_ERRCODE(ctrl) : DBGP_LEN(ctrl);
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}
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static void __init dbgp_mdelay(int ms)
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{
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int i;
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while (ms--) {
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for (i = 0; i < 1000; i++)
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outb(0x1, 0x80);
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}
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}
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static void dbgp_breath(void)
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{
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/* Sleep to give the debug port a chance to breathe */
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}
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static int dbgp_wait_until_done(unsigned ctrl)
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{
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u32 pids, lpid;
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int ret;
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int loop = 3;
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retry:
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writel(ctrl | DBGP_GO, &ehci_debug->control);
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ret = dbgp_wait_until_complete();
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pids = readl(&ehci_debug->pids);
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lpid = DBGP_PID_GET(pids);
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if (ret < 0)
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return ret;
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/*
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* If the port is getting full or it has dropped data
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* start pacing ourselves, not necessary but it's friendly.
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*/
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if ((lpid == USB_PID_NAK) || (lpid == USB_PID_NYET))
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dbgp_breath();
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/* If I get a NACK reissue the transmission */
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if (lpid == USB_PID_NAK) {
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if (--loop > 0)
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goto retry;
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}
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return ret;
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}
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static void dbgp_set_data(const void *buf, int size)
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{
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const unsigned char *bytes = buf;
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u32 lo, hi;
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int i;
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lo = hi = 0;
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for (i = 0; i < 4 && i < size; i++)
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lo |= bytes[i] << (8*i);
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for (; i < 8 && i < size; i++)
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hi |= bytes[i] << (8*(i - 4));
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writel(lo, &ehci_debug->data03);
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writel(hi, &ehci_debug->data47);
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}
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static void __init dbgp_get_data(void *buf, int size)
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{
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unsigned char *bytes = buf;
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u32 lo, hi;
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int i;
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lo = readl(&ehci_debug->data03);
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hi = readl(&ehci_debug->data47);
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for (i = 0; i < 4 && i < size; i++)
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bytes[i] = (lo >> (8*i)) & 0xff;
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for (; i < 8 && i < size; i++)
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bytes[i] = (hi >> (8*(i - 4))) & 0xff;
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}
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static int dbgp_bulk_write(unsigned devnum, unsigned endpoint,
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const char *bytes, int size)
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{
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u32 pids, addr, ctrl;
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int ret;
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if (size > DBGP_MAX_PACKET)
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return -1;
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addr = DBGP_EPADDR(devnum, endpoint);
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pids = readl(&ehci_debug->pids);
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pids = dbgp_pid_update(pids, USB_PID_OUT);
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ctrl = readl(&ehci_debug->control);
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ctrl = dbgp_len_update(ctrl, size);
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ctrl |= DBGP_OUT;
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ctrl |= DBGP_GO;
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dbgp_set_data(bytes, size);
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writel(addr, &ehci_debug->address);
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writel(pids, &ehci_debug->pids);
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ret = dbgp_wait_until_done(ctrl);
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if (ret < 0)
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return ret;
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return ret;
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}
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static int __init dbgp_bulk_read(unsigned devnum, unsigned endpoint, void *data,
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int size)
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{
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u32 pids, addr, ctrl;
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int ret;
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if (size > DBGP_MAX_PACKET)
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return -1;
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addr = DBGP_EPADDR(devnum, endpoint);
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pids = readl(&ehci_debug->pids);
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pids = dbgp_pid_update(pids, USB_PID_IN);
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ctrl = readl(&ehci_debug->control);
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ctrl = dbgp_len_update(ctrl, size);
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ctrl &= ~DBGP_OUT;
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ctrl |= DBGP_GO;
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writel(addr, &ehci_debug->address);
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writel(pids, &ehci_debug->pids);
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ret = dbgp_wait_until_done(ctrl);
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if (ret < 0)
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return ret;
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if (size > ret)
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size = ret;
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dbgp_get_data(data, size);
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return ret;
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}
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static int __init dbgp_control_msg(unsigned devnum, int requesttype,
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int request, int value, int index, void *data, int size)
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{
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u32 pids, addr, ctrl;
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struct usb_ctrlrequest req;
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int read;
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int ret;
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read = (requesttype & USB_DIR_IN) != 0;
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if (size > (read ? DBGP_MAX_PACKET:0))
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return -1;
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/* Compute the control message */
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req.bRequestType = requesttype;
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req.bRequest = request;
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req.wValue = cpu_to_le16(value);
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req.wIndex = cpu_to_le16(index);
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req.wLength = cpu_to_le16(size);
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pids = DBGP_PID_SET(USB_PID_DATA0, USB_PID_SETUP);
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addr = DBGP_EPADDR(devnum, 0);
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ctrl = readl(&ehci_debug->control);
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ctrl = dbgp_len_update(ctrl, sizeof(req));
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ctrl |= DBGP_OUT;
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ctrl |= DBGP_GO;
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/* Send the setup message */
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dbgp_set_data(&req, sizeof(req));
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writel(addr, &ehci_debug->address);
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writel(pids, &ehci_debug->pids);
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ret = dbgp_wait_until_done(ctrl);
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if (ret < 0)
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return ret;
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/* Read the result */
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return dbgp_bulk_read(devnum, 0, data, size);
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}
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/* Find a PCI capability */
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static u32 __init find_cap(u32 num, u32 slot, u32 func, int cap)
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{
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u8 pos;
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int bytes;
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if (!(read_pci_config_16(num, slot, func, PCI_STATUS) &
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PCI_STATUS_CAP_LIST))
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return 0;
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pos = read_pci_config_byte(num, slot, func, PCI_CAPABILITY_LIST);
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for (bytes = 0; bytes < 48 && pos >= 0x40; bytes++) {
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u8 id;
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pos &= ~3;
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id = read_pci_config_byte(num, slot, func, pos+PCI_CAP_LIST_ID);
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if (id == 0xff)
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break;
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if (id == cap)
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return pos;
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pos = read_pci_config_byte(num, slot, func,
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pos+PCI_CAP_LIST_NEXT);
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}
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return 0;
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}
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static u32 __init __find_dbgp(u32 bus, u32 slot, u32 func)
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{
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u32 class;
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class = read_pci_config(bus, slot, func, PCI_CLASS_REVISION);
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if ((class >> 8) != PCI_CLASS_SERIAL_USB_EHCI)
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return 0;
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return find_cap(bus, slot, func, PCI_CAP_ID_EHCI_DEBUG);
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}
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static u32 __init find_dbgp(int ehci_num, u32 *rbus, u32 *rslot, u32 *rfunc)
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{
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u32 bus, slot, func;
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for (bus = 0; bus < 256; bus++) {
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for (slot = 0; slot < 32; slot++) {
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for (func = 0; func < 8; func++) {
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unsigned cap;
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cap = __find_dbgp(bus, slot, func);
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if (!cap)
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continue;
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if (ehci_num-- != 0)
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continue;
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*rbus = bus;
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*rslot = slot;
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*rfunc = func;
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return cap;
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}
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}
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}
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return 0;
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}
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static int __init ehci_reset_port(int port)
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{
|
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u32 portsc;
|
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u32 delay_time, delay;
|
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int loop;
|
||||
|
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/* Reset the usb debug port */
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portsc = readl(&ehci_regs->port_status[port - 1]);
|
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portsc &= ~PORT_PE;
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portsc |= PORT_RESET;
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writel(portsc, &ehci_regs->port_status[port - 1]);
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delay = HUB_ROOT_RESET_TIME;
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for (delay_time = 0; delay_time < HUB_RESET_TIMEOUT;
|
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delay_time += delay) {
|
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dbgp_mdelay(delay);
|
||||
|
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portsc = readl(&ehci_regs->port_status[port - 1]);
|
||||
if (portsc & PORT_RESET) {
|
||||
/* force reset to complete */
|
||||
loop = 2;
|
||||
writel(portsc & ~(PORT_RWC_BITS | PORT_RESET),
|
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&ehci_regs->port_status[port - 1]);
|
||||
do {
|
||||
portsc = readl(&ehci_regs->port_status[port-1]);
|
||||
} while ((portsc & PORT_RESET) && (--loop > 0));
|
||||
}
|
||||
|
||||
/* Device went away? */
|
||||
if (!(portsc & PORT_CONNECT))
|
||||
return -ENOTCONN;
|
||||
|
||||
/* bomb out completely if something weird happend */
|
||||
if ((portsc & PORT_CSC))
|
||||
return -EINVAL;
|
||||
|
||||
/* If we've finished resetting, then break out of the loop */
|
||||
if (!(portsc & PORT_RESET) && (portsc & PORT_PE))
|
||||
return 0;
|
||||
}
|
||||
return -EBUSY;
|
||||
}
|
||||
|
||||
static int __init ehci_wait_for_port(int port)
|
||||
{
|
||||
u32 status;
|
||||
int ret, reps;
|
||||
|
||||
for (reps = 0; reps < 3; reps++) {
|
||||
dbgp_mdelay(100);
|
||||
status = readl(&ehci_regs->status);
|
||||
if (status & STS_PCD) {
|
||||
ret = ehci_reset_port(port);
|
||||
if (ret == 0)
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
return -ENOTCONN;
|
||||
}
|
||||
|
||||
#ifdef DBGP_DEBUG
|
||||
# define dbgp_printk early_printk
|
||||
#else
|
||||
static inline void dbgp_printk(const char *fmt, ...) { }
|
||||
#endif
|
||||
|
||||
typedef void (*set_debug_port_t)(int port);
|
||||
|
||||
static void __init default_set_debug_port(int port)
|
||||
{
|
||||
}
|
||||
|
||||
static set_debug_port_t __initdata set_debug_port = default_set_debug_port;
|
||||
|
||||
static void __init nvidia_set_debug_port(int port)
|
||||
{
|
||||
u32 dword;
|
||||
dword = read_pci_config(ehci_dev.bus, ehci_dev.slot, ehci_dev.func,
|
||||
0x74);
|
||||
dword &= ~(0x0f<<12);
|
||||
dword |= ((port & 0x0f)<<12);
|
||||
write_pci_config(ehci_dev.bus, ehci_dev.slot, ehci_dev.func, 0x74,
|
||||
dword);
|
||||
dbgp_printk("set debug port to %d\n", port);
|
||||
}
|
||||
|
||||
static void __init detect_set_debug_port(void)
|
||||
{
|
||||
u32 vendorid;
|
||||
|
||||
vendorid = read_pci_config(ehci_dev.bus, ehci_dev.slot, ehci_dev.func,
|
||||
0x00);
|
||||
|
||||
if ((vendorid & 0xffff) == 0x10de) {
|
||||
dbgp_printk("using nvidia set_debug_port\n");
|
||||
set_debug_port = nvidia_set_debug_port;
|
||||
}
|
||||
}
|
||||
|
||||
static int __init ehci_setup(void)
|
||||
{
|
||||
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;
|
||||
int loop;
|
||||
int port_map_tried;
|
||||
int playtimes = 3;
|
||||
|
||||
try_next_time:
|
||||
port_map_tried = 0;
|
||||
|
||||
try_next_port:
|
||||
|
||||
hcs_params = readl(&ehci_caps->hcs_params);
|
||||
debug_port = HCS_DEBUG_PORT(hcs_params);
|
||||
n_ports = HCS_N_PORTS(hcs_params);
|
||||
|
||||
dbgp_printk("debug_port: %d\n", debug_port);
|
||||
dbgp_printk("n_ports: %d\n", n_ports);
|
||||
|
||||
for (i = 1; i <= n_ports; i++) {
|
||||
portsc = readl(&ehci_regs->port_status[i-1]);
|
||||
dbgp_printk("portstatus%d: %08x\n", i, portsc);
|
||||
}
|
||||
|
||||
if (port_map_tried && (new_debug_port != debug_port)) {
|
||||
if (--playtimes) {
|
||||
set_debug_port(new_debug_port);
|
||||
goto try_next_time;
|
||||
}
|
||||
return -1;
|
||||
}
|
||||
|
||||
loop = 100000;
|
||||
/* Reset the EHCI controller */
|
||||
cmd = readl(&ehci_regs->command);
|
||||
cmd |= CMD_RESET;
|
||||
writel(cmd, &ehci_regs->command);
|
||||
do {
|
||||
cmd = readl(&ehci_regs->command);
|
||||
} while ((cmd & CMD_RESET) && (--loop > 0));
|
||||
|
||||
if (!loop) {
|
||||
dbgp_printk("can not reset ehci\n");
|
||||
return -1;
|
||||
}
|
||||
dbgp_printk("ehci reset done\n");
|
||||
|
||||
/* Claim ownership, but do not enable yet */
|
||||
ctrl = readl(&ehci_debug->control);
|
||||
ctrl |= DBGP_OWNER;
|
||||
ctrl &= ~(DBGP_ENABLED | DBGP_INUSE);
|
||||
writel(ctrl, &ehci_debug->control);
|
||||
|
||||
/* Start the ehci running */
|
||||
cmd = readl(&ehci_regs->command);
|
||||
cmd &= ~(CMD_LRESET | CMD_IAAD | CMD_PSE | CMD_ASE | CMD_RESET);
|
||||
cmd |= CMD_RUN;
|
||||
writel(cmd, &ehci_regs->command);
|
||||
|
||||
/* Ensure everything is routed to the EHCI */
|
||||
writel(FLAG_CF, &ehci_regs->configured_flag);
|
||||
|
||||
/* Wait until the controller is no longer halted */
|
||||
loop = 10;
|
||||
do {
|
||||
status = readl(&ehci_regs->status);
|
||||
} while ((status & STS_HALT) && (--loop > 0));
|
||||
|
||||
if (!loop) {
|
||||
dbgp_printk("ehci can be started\n");
|
||||
return -1;
|
||||
}
|
||||
dbgp_printk("ehci started\n");
|
||||
|
||||
/* Wait for a device to show up in the debug port */
|
||||
ret = ehci_wait_for_port(debug_port);
|
||||
if (ret < 0) {
|
||||
dbgp_printk("No device found in debug port\n");
|
||||
goto next_debug_port;
|
||||
}
|
||||
dbgp_printk("ehci wait for port done\n");
|
||||
|
||||
/* Enable the debug port */
|
||||
ctrl = readl(&ehci_debug->control);
|
||||
ctrl |= DBGP_CLAIM;
|
||||
writel(ctrl, &ehci_debug->control);
|
||||
ctrl = readl(&ehci_debug->control);
|
||||
if ((ctrl & DBGP_CLAIM) != DBGP_CLAIM) {
|
||||
dbgp_printk("No device in debug port\n");
|
||||
writel(ctrl & ~DBGP_CLAIM, &ehci_debug->control);
|
||||
goto err;
|
||||
}
|
||||
dbgp_printk("debug ported enabled\n");
|
||||
|
||||
/* Completely transfer the debug device to the debug controller */
|
||||
portsc = readl(&ehci_regs->port_status[debug_port - 1]);
|
||||
portsc &= ~PORT_PE;
|
||||
writel(portsc, &ehci_regs->port_status[debug_port - 1]);
|
||||
|
||||
dbgp_mdelay(100);
|
||||
|
||||
/* Find the debug device and make it device number 127 */
|
||||
for (devnum = 0; devnum <= 127; devnum++) {
|
||||
ret = dbgp_control_msg(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;
|
||||
|
||||
/* Move the device to 127 if it isn't already there */
|
||||
if (devnum != USB_DEBUG_DEVNUM) {
|
||||
ret = dbgp_control_msg(devnum,
|
||||
USB_DIR_OUT | USB_TYPE_STANDARD | USB_RECIP_DEVICE,
|
||||
USB_REQ_SET_ADDRESS, USB_DEBUG_DEVNUM, 0, NULL, 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("debug device renamed to 127\n");
|
||||
}
|
||||
|
||||
/* Enable the debug interface */
|
||||
ret = dbgp_control_msg(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) {
|
||||
dbgp_printk(" Could not enable the debug device\n");
|
||||
goto err;
|
||||
}
|
||||
dbgp_printk("debug interface enabled\n");
|
||||
|
||||
/* Perform a small write to get the even/odd data state in sync
|
||||
*/
|
||||
ret = dbgp_bulk_write(USB_DEBUG_DEVNUM, dbgp_endpoint_out, " ", 1);
|
||||
if (ret < 0) {
|
||||
dbgp_printk("dbgp_bulk_write failed: %d\n", ret);
|
||||
goto err;
|
||||
}
|
||||
dbgp_printk("small write doned\n");
|
||||
|
||||
return 0;
|
||||
err:
|
||||
/* Things didn't work so remove my claim */
|
||||
ctrl = readl(&ehci_debug->control);
|
||||
ctrl &= ~(DBGP_CLAIM | DBGP_OUT);
|
||||
writel(ctrl, &ehci_debug->control);
|
||||
return -1;
|
||||
|
||||
next_debug_port:
|
||||
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;
|
||||
}
|
||||
|
||||
return -1;
|
||||
}
|
||||
|
||||
static int __init early_dbgp_init(char *s)
|
||||
{
|
||||
u32 debug_port, bar, offset;
|
||||
u32 bus, slot, func, cap;
|
||||
void __iomem *ehci_bar;
|
||||
u32 dbgp_num;
|
||||
u32 bar_val;
|
||||
char *e;
|
||||
int ret;
|
||||
u8 byte;
|
||||
|
||||
if (!early_pci_allowed())
|
||||
return -1;
|
||||
|
||||
dbgp_num = 0;
|
||||
if (*s)
|
||||
dbgp_num = simple_strtoul(s, &e, 10);
|
||||
dbgp_printk("dbgp_num: %d\n", dbgp_num);
|
||||
|
||||
cap = find_dbgp(dbgp_num, &bus, &slot, &func);
|
||||
if (!cap)
|
||||
return -1;
|
||||
|
||||
dbgp_printk("Found EHCI debug port on %02x:%02x.%1x\n", bus, slot,
|
||||
func);
|
||||
|
||||
debug_port = read_pci_config(bus, slot, func, cap);
|
||||
bar = (debug_port >> 29) & 0x7;
|
||||
bar = (bar * 4) + 0xc;
|
||||
offset = (debug_port >> 16) & 0xfff;
|
||||
dbgp_printk("bar: %02x offset: %03x\n", bar, offset);
|
||||
if (bar != PCI_BASE_ADDRESS_0) {
|
||||
dbgp_printk("only debug ports on bar 1 handled.\n");
|
||||
|
||||
return -1;
|
||||
}
|
||||
|
||||
bar_val = read_pci_config(bus, slot, func, PCI_BASE_ADDRESS_0);
|
||||
dbgp_printk("bar_val: %02x offset: %03x\n", bar_val, offset);
|
||||
if (bar_val & ~PCI_BASE_ADDRESS_MEM_MASK) {
|
||||
dbgp_printk("only simple 32bit mmio bars supported\n");
|
||||
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* double check if the mem space is enabled */
|
||||
byte = read_pci_config_byte(bus, slot, func, 0x04);
|
||||
if (!(byte & 0x2)) {
|
||||
byte |= 0x02;
|
||||
write_pci_config_byte(bus, slot, func, 0x04, byte);
|
||||
dbgp_printk("mmio for ehci enabled\n");
|
||||
}
|
||||
|
||||
/*
|
||||
* FIXME I don't have the bar size so just guess PAGE_SIZE is more
|
||||
* than enough. 1K is the biggest I have seen.
|
||||
*/
|
||||
set_fixmap_nocache(FIX_DBGP_BASE, bar_val & PAGE_MASK);
|
||||
ehci_bar = (void __iomem *)__fix_to_virt(FIX_DBGP_BASE);
|
||||
ehci_bar += bar_val & ~PAGE_MASK;
|
||||
dbgp_printk("ehci_bar: %p\n", ehci_bar);
|
||||
|
||||
ehci_caps = ehci_bar;
|
||||
ehci_regs = ehci_bar + HC_LENGTH(readl(&ehci_caps->hc_capbase));
|
||||
ehci_debug = ehci_bar + offset;
|
||||
ehci_dev.bus = bus;
|
||||
ehci_dev.slot = slot;
|
||||
ehci_dev.func = func;
|
||||
|
||||
detect_set_debug_port();
|
||||
|
||||
ret = ehci_setup();
|
||||
if (ret < 0) {
|
||||
dbgp_printk("ehci_setup failed\n");
|
||||
ehci_debug = NULL;
|
||||
|
||||
return -1;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void early_dbgp_write(struct console *con, const char *str, u32 n)
|
||||
{
|
||||
int chunk, ret;
|
||||
|
||||
if (!ehci_debug)
|
||||
return;
|
||||
while (n > 0) {
|
||||
chunk = n;
|
||||
if (chunk > DBGP_MAX_PACKET)
|
||||
chunk = DBGP_MAX_PACKET;
|
||||
ret = dbgp_bulk_write(USB_DEBUG_DEVNUM,
|
||||
dbgp_endpoint_out, str, chunk);
|
||||
str += chunk;
|
||||
n -= chunk;
|
||||
}
|
||||
}
|
||||
|
||||
static struct console early_dbgp_console = {
|
||||
.name = "earlydbg",
|
||||
.write = early_dbgp_write,
|
||||
.flags = CON_PRINTBUFFER,
|
||||
.index = -1,
|
||||
};
|
||||
#endif
|
||||
|
||||
/* Direct interface for emergencies */
|
||||
static struct console *early_console = &early_vga_console;
|
||||
static int __initdata early_console_initialized;
|
||||
@@ -891,10 +176,19 @@ asmlinkage void early_printk(const char *fmt, ...)
|
||||
va_end(ap);
|
||||
}
|
||||
|
||||
static inline void early_console_register(struct console *con, int keep_early)
|
||||
{
|
||||
early_console = con;
|
||||
if (keep_early)
|
||||
early_console->flags &= ~CON_BOOT;
|
||||
else
|
||||
early_console->flags |= CON_BOOT;
|
||||
register_console(early_console);
|
||||
}
|
||||
|
||||
static int __init setup_early_printk(char *buf)
|
||||
{
|
||||
int keep_early;
|
||||
int keep;
|
||||
|
||||
if (!buf)
|
||||
return 0;
|
||||
@@ -903,42 +197,34 @@ static int __init setup_early_printk(char *buf)
|
||||
return 0;
|
||||
early_console_initialized = 1;
|
||||
|
||||
keep_early = (strstr(buf, "keep") != NULL);
|
||||
keep = (strstr(buf, "keep") != NULL);
|
||||
|
||||
if (!strncmp(buf, "serial", 6)) {
|
||||
early_serial_init(buf + 6);
|
||||
early_console = &early_serial_console;
|
||||
} else if (!strncmp(buf, "ttyS", 4)) {
|
||||
early_serial_init(buf);
|
||||
early_console = &early_serial_console;
|
||||
} else if (!strncmp(buf, "vga", 3)
|
||||
&& boot_params.screen_info.orig_video_isVGA == 1) {
|
||||
max_xpos = boot_params.screen_info.orig_video_cols;
|
||||
max_ypos = boot_params.screen_info.orig_video_lines;
|
||||
current_ypos = boot_params.screen_info.orig_y;
|
||||
early_console = &early_vga_console;
|
||||
while (*buf != '\0') {
|
||||
if (!strncmp(buf, "serial", 6)) {
|
||||
early_serial_init(buf + 6);
|
||||
early_console_register(&early_serial_console, keep);
|
||||
}
|
||||
if (!strncmp(buf, "ttyS", 4)) {
|
||||
early_serial_init(buf + 4);
|
||||
early_console_register(&early_serial_console, keep);
|
||||
}
|
||||
if (!strncmp(buf, "vga", 3) &&
|
||||
boot_params.screen_info.orig_video_isVGA == 1) {
|
||||
max_xpos = boot_params.screen_info.orig_video_cols;
|
||||
max_ypos = boot_params.screen_info.orig_video_lines;
|
||||
current_ypos = boot_params.screen_info.orig_y;
|
||||
early_console_register(&early_vga_console, keep);
|
||||
}
|
||||
#ifdef CONFIG_EARLY_PRINTK_DBGP
|
||||
} else if (!strncmp(buf, "dbgp", 4)) {
|
||||
if (early_dbgp_init(buf+4) < 0)
|
||||
return 0;
|
||||
early_console = &early_dbgp_console;
|
||||
/*
|
||||
* usb subsys will reset ehci controller, so don't keep
|
||||
* that early console
|
||||
*/
|
||||
keep_early = 0;
|
||||
if (!strncmp(buf, "dbgp", 4) && !early_dbgp_init(buf + 4))
|
||||
early_console_register(&early_dbgp_console, keep);
|
||||
#endif
|
||||
#ifdef CONFIG_HVC_XEN
|
||||
} else if (!strncmp(buf, "xen", 3)) {
|
||||
early_console = &xenboot_console;
|
||||
if (!strncmp(buf, "xen", 3))
|
||||
early_console_register(&xenboot_console, keep);
|
||||
#endif
|
||||
buf++;
|
||||
}
|
||||
|
||||
if (keep_early)
|
||||
early_console->flags &= ~CON_BOOT;
|
||||
else
|
||||
early_console->flags |= CON_BOOT;
|
||||
register_console(early_console);
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
Reference in New Issue
Block a user