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-rw-r--r--drivers/usb/host/Kconfig13
-rw-r--r--drivers/usb/host/Makefile1
-rw-r--r--drivers/usb/host/ehci-dbg.c69
-rw-r--r--drivers/usb/host/ehci-hcd.c60
-rw-r--r--drivers/usb/host/ehci-hub.c2
-rw-r--r--drivers/usb/host/ehci-q.c4
-rw-r--r--drivers/usb/host/ehci-sched.c36
-rw-r--r--drivers/usb/host/hc_crisv10.c10
-rw-r--r--drivers/usb/host/isp116x-hcd.c1871
-rw-r--r--drivers/usb/host/isp116x.h583
-rw-r--r--drivers/usb/host/ohci-dbg.c10
-rw-r--r--drivers/usb/host/ohci-hcd.c60
-rw-r--r--drivers/usb/host/ohci-hub.c3
-rw-r--r--drivers/usb/host/ohci-mem.c5
-rw-r--r--drivers/usb/host/ohci-omap.c57
-rw-r--r--drivers/usb/host/ohci-pci.c13
-rw-r--r--drivers/usb/host/ohci.h2
-rw-r--r--drivers/usb/host/sl811-hcd.c20
-rw-r--r--drivers/usb/host/sl811_cs.c28
-rw-r--r--drivers/usb/host/uhci-debug.c32
-rw-r--r--drivers/usb/host/uhci-hcd.c773
-rw-r--r--drivers/usb/host/uhci-hcd.h59
-rw-r--r--drivers/usb/host/uhci-hub.c83
-rw-r--r--drivers/usb/host/uhci-q.c60
24 files changed, 3256 insertions, 598 deletions
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index 19e598c9641..ed1899d307d 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -49,6 +49,19 @@ config USB_EHCI_ROOT_HUB_TT
This supports the EHCI implementation from TransDimension Inc.
+config USB_ISP116X_HCD
+ tristate "ISP116X HCD support"
+ depends on USB
+ default N
+ ---help---
+ The ISP1160 and ISP1161 chips are USB host controllers. Enable this
+ option if your board has this chip. If unsure, say N.
+
+ This driver does not support isochronous transfers.
+
+ To compile this driver as a module, choose M here: the
+ module will be called isp116x-hcd.
+
config USB_OHCI_HCD
tristate "OHCI HCD support"
depends on USB && USB_ARCH_HAS_OHCI
diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile
index 5dbd3e7a27c..350d14fc1cc 100644
--- a/drivers/usb/host/Makefile
+++ b/drivers/usb/host/Makefile
@@ -4,6 +4,7 @@
#
obj-$(CONFIG_USB_EHCI_HCD) += ehci-hcd.o
+obj-$(CONFIG_USB_ISP116X_HCD) += isp116x-hcd.o
obj-$(CONFIG_USB_OHCI_HCD) += ohci-hcd.o
obj-$(CONFIG_USB_UHCI_HCD) += uhci-hcd.o
obj-$(CONFIG_USB_SL811_HCD) += sl811-hcd.o
diff --git a/drivers/usb/host/ehci-dbg.c b/drivers/usb/host/ehci-dbg.c
index 9b347d76538..50cb0183107 100644
--- a/drivers/usb/host/ehci-dbg.c
+++ b/drivers/usb/host/ehci-dbg.c
@@ -254,7 +254,7 @@ dbg_port_buf (char *buf, unsigned len, const char *label, int port, u32 status)
}
return scnprintf (buf, len,
- "%s%sport %d status %06x%s%s sig=%s %s%s%s%s%s%s%s%s%s",
+ "%s%sport %d status %06x%s%s sig=%s%s%s%s%s%s%s%s%s%s",
label, label [0] ? " " : "", port, status,
(status & PORT_POWER) ? " POWER" : "",
(status & PORT_OWNER) ? " OWNER" : "",
@@ -450,7 +450,7 @@ show_async (struct class_device *class_dev, char *buf)
*buf = 0;
- bus = to_usb_bus(class_dev);
+ bus = class_get_devdata(class_dev);
hcd = bus->hcpriv;
ehci = hcd_to_ehci (hcd);
next = buf;
@@ -496,7 +496,7 @@ show_periodic (struct class_device *class_dev, char *buf)
return 0;
seen_count = 0;
- bus = to_usb_bus(class_dev);
+ bus = class_get_devdata(class_dev);
hcd = bus->hcpriv;
ehci = hcd_to_ehci (hcd);
next = buf;
@@ -633,7 +633,7 @@ show_registers (struct class_device *class_dev, char *buf)
static char fmt [] = "%*s\n";
static char label [] = "";
- bus = to_usb_bus(class_dev);
+ bus = class_get_devdata(class_dev);
hcd = bus->hcpriv;
ehci = hcd_to_ehci (hcd);
next = buf;
@@ -644,9 +644,11 @@ show_registers (struct class_device *class_dev, char *buf)
if (bus->controller->power.power_state) {
size = scnprintf (next, size,
"bus %s, device %s (driver " DRIVER_VERSION ")\n"
+ "%s\n"
"SUSPENDED (no register access)\n",
hcd->self.controller->bus->name,
- hcd->self.controller->bus_id);
+ hcd->self.controller->bus_id,
+ hcd->product_desc);
goto done;
}
@@ -654,13 +656,53 @@ show_registers (struct class_device *class_dev, char *buf)
i = HC_VERSION(readl (&ehci->caps->hc_capbase));
temp = scnprintf (next, size,
"bus %s, device %s (driver " DRIVER_VERSION ")\n"
+ "%s\n"
"EHCI %x.%02x, hcd state %d\n",
hcd->self.controller->bus->name,
hcd->self.controller->bus_id,
+ hcd->product_desc,
i >> 8, i & 0x0ff, hcd->state);
size -= temp;
next += temp;
+#ifdef CONFIG_PCI
+ /* EHCI 0.96 and later may have "extended capabilities" */
+ if (hcd->self.controller->bus == &pci_bus_type) {
+ struct pci_dev *pdev;
+ u32 offset, cap, cap2;
+ unsigned count = 256/4;
+
+ pdev = to_pci_dev(ehci_to_hcd(ehci)->self.controller);
+ offset = HCC_EXT_CAPS (readl (&ehci->caps->hcc_params));
+ while (offset && count--) {
+ pci_read_config_dword (pdev, offset, &cap);
+ switch (cap & 0xff) {
+ case 1:
+ temp = scnprintf (next, size,
+ "ownership %08x%s%s\n", cap,
+ (cap & (1 << 24)) ? " linux" : "",
+ (cap & (1 << 16)) ? " firmware" : "");
+ size -= temp;
+ next += temp;
+
+ offset += 4;
+ pci_read_config_dword (pdev, offset, &cap2);
+ temp = scnprintf (next, size,
+ "SMI sts/enable 0x%08x\n", cap2);
+ size -= temp;
+ next += temp;
+ break;
+ case 0: /* illegal reserved capability */
+ cap = 0;
+ /* FALLTHROUGH */
+ default: /* unknown */
+ break;
+ }
+ temp = (cap >> 8) & 0xff;
+ }
+ }
+#endif
+
// FIXME interpret both types of params
i = readl (&ehci->caps->hcs_params);
temp = scnprintf (next, size, "structural params 0x%08x\n", i);
@@ -696,12 +738,19 @@ show_registers (struct class_device *class_dev, char *buf)
size -= temp;
next += temp;
- for (i = 0; i < HCS_N_PORTS (ehci->hcs_params); i++) {
- temp = dbg_port_buf (scratch, sizeof scratch, label, i + 1,
- readl (&ehci->regs->port_status [i]));
+ for (i = 1; i <= HCS_N_PORTS (ehci->hcs_params); i++) {
+ temp = dbg_port_buf (scratch, sizeof scratch, label, i,
+ readl (&ehci->regs->port_status [i - 1]));
temp = scnprintf (next, size, fmt, temp, scratch);
size -= temp;
next += temp;
+ if (i == HCS_DEBUG_PORT(ehci->hcs_params) && ehci->debug) {
+ temp = scnprintf (next, size,
+ " debug control %08x\n",
+ readl (&ehci->debug->control));
+ size -= temp;
+ next += temp;
+ }
}
if (ehci->reclaim) {
@@ -735,7 +784,7 @@ static CLASS_DEVICE_ATTR (registers, S_IRUGO, show_registers, NULL);
static inline void create_debug_files (struct ehci_hcd *ehci)
{
- struct class_device *cldev = &ehci_to_hcd(ehci)->self.class_dev;
+ struct class_device *cldev = ehci_to_hcd(ehci)->self.class_dev;
class_device_create_file(cldev, &class_device_attr_async);
class_device_create_file(cldev, &class_device_attr_periodic);
@@ -744,7 +793,7 @@ static inline void create_debug_files (struct ehci_hcd *ehci)
static inline void remove_debug_files (struct ehci_hcd *ehci)
{
- struct class_device *cldev = &ehci_to_hcd(ehci)->self.class_dev;
+ struct class_device *cldev = ehci_to_hcd(ehci)->self.class_dev;
class_device_remove_file(cldev, &class_device_attr_async);
class_device_remove_file(cldev, &class_device_attr_periodic);
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index bc69bd7aceb..149b13fc0a7 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -304,30 +304,31 @@ static void ehci_watchdog (unsigned long param)
*/
static int bios_handoff (struct ehci_hcd *ehci, int where, u32 cap)
{
+ struct pci_dev *pdev = to_pci_dev(ehci_to_hcd(ehci)->self.controller);
+
+ /* always say Linux will own the hardware */
+ pci_write_config_byte(pdev, where + 3, 1);
+
+ /* maybe wait a while for BIOS to respond */
if (cap & (1 << 16)) {
int msec = 5000;
- struct pci_dev *pdev =
- to_pci_dev(ehci_to_hcd(ehci)->self.controller);
- /* request handoff to OS */
- cap |= 1 << 24;
- pci_write_config_dword(pdev, where, cap);
-
- /* and wait a while for it to happen */
do {
msleep(10);
msec -= 10;
pci_read_config_dword(pdev, where, &cap);
} while ((cap & (1 << 16)) && msec);
if (cap & (1 << 16)) {
- ehci_err (ehci, "BIOS handoff failed (%d, %04x)\n",
+ ehci_err(ehci, "BIOS handoff failed (%d, %08x)\n",
where, cap);
// some BIOS versions seem buggy...
// return 1;
ehci_warn (ehci, "continuing after BIOS bug...\n");
- return 0;
- }
- ehci_dbg (ehci, "BIOS handoff succeeded\n");
+ /* disable all SMIs, and clear "BIOS owns" flag */
+ pci_write_config_dword(pdev, where + 4, 0);
+ pci_write_config_byte(pdev, where + 2, 0);
+ } else
+ ehci_dbg(ehci, "BIOS handoff succeeded\n");
}
return 0;
}
@@ -492,8 +493,6 @@ static int ehci_start (struct usb_hcd *hcd)
{
struct ehci_hcd *ehci = hcd_to_ehci (hcd);
u32 temp;
- struct usb_device *udev;
- struct usb_bus *bus;
int retval;
u32 hcc_params;
u8 sbrn = 0;
@@ -588,8 +587,8 @@ static int ehci_start (struct usb_hcd *hcd)
writel (0, &ehci->regs->segment);
#if 0
// this is deeply broken on almost all architectures
- if (!pci_set_dma_mask (to_pci_dev(hcd->self.controller), 0xffffffffffffffffULL))
- ehci_info (ehci, "enabled 64bit PCI DMA\n");
+ if (!dma_set_mask (hcd->self.controller, DMA_64BIT_MASK))
+ ehci_info (ehci, "enabled 64bit DMA\n");
#endif
}
@@ -631,17 +630,6 @@ static int ehci_start (struct usb_hcd *hcd)
/* set async sleep time = 10 us ... ? */
- /* wire up the root hub */
- bus = hcd_to_bus (hcd);
- udev = first ? usb_alloc_dev (NULL, bus, 0) : bus->root_hub;
- if (!udev) {
-done2:
- ehci_mem_cleanup (ehci);
- return -ENOMEM;
- }
- udev->speed = USB_SPEED_HIGH;
- udev->state = first ? USB_STATE_ATTACHED : USB_STATE_CONFIGURED;
-
/*
* Start, enabling full USB 2.0 functionality ... usb 1.1 devices
* are explicitly handed to companion controller(s), so no TT is
@@ -664,24 +652,6 @@ done2:
first ? "initialized" : "restarted",
temp >> 8, temp & 0xff, DRIVER_VERSION);
- /*
- * From here on, khubd concurrently accesses the root
- * hub; drivers will be talking to enumerated devices.
- * (On restart paths, khubd already knows about the root
- * hub and could find work as soon as we wrote FLAG_CF.)
- *
- * Before this point the HC was idle/ready. After, khubd
- * and device drivers may start it running.
- */
- if (first && usb_hcd_register_root_hub (udev, hcd) != 0) {
- if (hcd->state == HC_STATE_RUNNING)
- ehci_quiesce (ehci);
- ehci_reset (ehci);
- usb_put_dev (udev);
- retval = -ENODEV;
- goto done2;
- }
-
writel (INTR_MASK, &ehci->regs->intr_enable); /* Turn On Interrupts */
if (first)
@@ -990,7 +960,7 @@ static int ehci_urb_enqueue (
struct usb_hcd *hcd,
struct usb_host_endpoint *ep,
struct urb *urb,
- int mem_flags
+ unsigned mem_flags
) {
struct ehci_hcd *ehci = hcd_to_ehci (hcd);
struct list_head qtd_list;
diff --git a/drivers/usb/host/ehci-hub.c b/drivers/usb/host/ehci-hub.c
index d7b4f7939de..36cc1f2218d 100644
--- a/drivers/usb/host/ehci-hub.c
+++ b/drivers/usb/host/ehci-hub.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2001-2002 by David Brownell
+ * Copyright (C) 2001-2004 by 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
diff --git a/drivers/usb/host/ehci-q.c b/drivers/usb/host/ehci-q.c
index 7df9b9af54f..d74b2d68a50 100644
--- a/drivers/usb/host/ehci-q.c
+++ b/drivers/usb/host/ehci-q.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2001-2002 by David Brownell
+ * Copyright (C) 2001-2004 by 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
@@ -898,7 +898,7 @@ submit_async (
struct usb_host_endpoint *ep,
struct urb *urb,
struct list_head *qtd_list,
- int mem_flags
+ unsigned mem_flags
) {
struct ehci_qtd *qtd;
int epnum;
diff --git a/drivers/usb/host/ehci-sched.c b/drivers/usb/host/ehci-sched.c
index 2fa1ffee5ff..9af4f64532a 100644
--- a/drivers/usb/host/ehci-sched.c
+++ b/drivers/usb/host/ehci-sched.c
@@ -588,7 +588,7 @@ static int intr_submit (
struct usb_host_endpoint *ep,
struct urb *urb,
struct list_head *qtd_list,
- int mem_flags
+ unsigned mem_flags
) {
unsigned epnum;
unsigned long flags;
@@ -633,13 +633,12 @@ done:
/* ehci_iso_stream ops work with both ITD and SITD */
static struct ehci_iso_stream *
-iso_stream_alloc (int mem_flags)
+iso_stream_alloc (unsigned mem_flags)
{
struct ehci_iso_stream *stream;
- stream = kmalloc(sizeof *stream, mem_flags);
+ stream = kcalloc(1, sizeof *stream, mem_flags);
if (likely (stream != NULL)) {
- memset (stream, 0, sizeof(*stream));
INIT_LIST_HEAD(&stream->td_list);
INIT_LIST_HEAD(&stream->free_list);
stream->next_uframe = -1;
@@ -847,7 +846,7 @@ iso_stream_find (struct ehci_hcd *ehci, struct urb *urb)
/* ehci_iso_sched ops can be ITD-only or SITD-only */
static struct ehci_iso_sched *
-iso_sched_alloc (unsigned packets, int mem_flags)
+iso_sched_alloc (unsigned packets, unsigned mem_flags)
{
struct ehci_iso_sched *iso_sched;
int size = sizeof *iso_sched;
@@ -894,7 +893,7 @@ itd_sched_init (
trans |= length << 16;
uframe->transaction = cpu_to_le32 (trans);
- /* might need to cross a buffer page within a td */
+ /* might need to cross a buffer page within a uframe */
uframe->bufp = (buf & ~(u64)0x0fff);
buf += length;
if (unlikely ((uframe->bufp != (buf & ~(u64)0x0fff))))
@@ -920,7 +919,7 @@ itd_urb_transaction (
struct ehci_iso_stream *stream,
struct ehci_hcd *ehci,
struct urb *urb,
- int mem_flags
+ unsigned mem_flags
)
{
struct ehci_itd *itd;
@@ -1194,6 +1193,7 @@ itd_init (struct ehci_iso_stream *stream, struct ehci_itd *itd)
{
int i;
+ /* it's been recently zeroed */
itd->hw_next = EHCI_LIST_END;
itd->hw_bufp [0] = stream->buf0;
itd->hw_bufp [1] = stream->buf1;
@@ -1210,8 +1210,7 @@ itd_patch (
struct ehci_itd *itd,
struct ehci_iso_sched *iso_sched,
unsigned index,
- u16 uframe,
- int first
+ u16 uframe
)
{
struct ehci_iso_packet *uf = &iso_sched->packet [index];
@@ -1228,7 +1227,7 @@ itd_patch (
itd->hw_bufp_hi [pg] |= cpu_to_le32 ((u32)(uf->bufp >> 32));
/* iso_frame_desc[].offset must be strictly increasing */
- if (unlikely (!first && uf->cross)) {
+ if (unlikely (uf->cross)) {
u64 bufp = uf->bufp + 4096;
itd->pg = ++pg;
itd->hw_bufp [pg] |= cpu_to_le32 (bufp & ~(u32)0);
@@ -1257,7 +1256,7 @@ itd_link_urb (
struct ehci_iso_stream *stream
)
{
- int packet, first = 1;
+ int packet;
unsigned next_uframe, uframe, frame;
struct ehci_iso_sched *iso_sched = urb->hcpriv;
struct ehci_itd *itd;
@@ -1290,7 +1289,6 @@ itd_link_urb (
list_move_tail (&itd->itd_list, &stream->td_list);
itd->stream = iso_stream_get (stream);
itd->urb = usb_get_urb (urb);
- first = 1;
itd_init (stream, itd);
}
@@ -1298,8 +1296,7 @@ itd_link_urb (
frame = next_uframe >> 3;
itd->usecs [uframe] = stream->usecs;
- itd_patch (itd, iso_sched, packet, uframe, first);
- first = 0;
+ itd_patch (itd, iso_sched, packet, uframe);
next_uframe += stream->interval;
stream->depth += stream->interval;
@@ -1415,7 +1412,8 @@ itd_complete (
/*-------------------------------------------------------------------------*/
-static int itd_submit (struct ehci_hcd *ehci, struct urb *urb, int mem_flags)
+static int itd_submit (struct ehci_hcd *ehci, struct urb *urb,
+ unsigned mem_flags)
{
int status = -EINVAL;
unsigned long flags;
@@ -1526,7 +1524,7 @@ sitd_urb_transaction (
struct ehci_iso_stream *stream,
struct ehci_hcd *ehci,
struct urb *urb,
- int mem_flags
+ unsigned mem_flags
)
{
struct ehci_sitd *sitd;
@@ -1775,7 +1773,8 @@ sitd_complete (
}
-static int sitd_submit (struct ehci_hcd *ehci, struct urb *urb, int mem_flags)
+static int sitd_submit (struct ehci_hcd *ehci, struct urb *urb,
+ unsigned mem_flags)
{
int status = -EINVAL;
unsigned long flags;
@@ -1825,7 +1824,8 @@ done:
#else
static inline int
-sitd_submit (struct ehci_hcd *ehci, struct urb *urb, int mem_flags)
+sitd_submit (struct ehci_hcd *ehci, struct urb *urb,
+ unsigned mem_flags)
{
ehci_dbg (ehci, "split iso support is disabled\n");
return -ENOSYS;
diff --git a/drivers/usb/host/hc_crisv10.c b/drivers/usb/host/hc_crisv10.c
index d9883d774d3..81f8f6b7fdc 100644
--- a/drivers/usb/host/hc_crisv10.c
+++ b/drivers/usb/host/hc_crisv10.c
@@ -463,7 +463,8 @@ static void etrax_usb_free_epid(int epid);
static int etrax_remove_from_sb_list(struct urb *urb);
-static void* etrax_usb_buffer_alloc(struct usb_bus* bus, size_t size, int mem_flags, dma_addr_t *dma);
+static void* etrax_usb_buffer_alloc(struct usb_bus* bus, size_t size,
+ unsigned mem_flags, dma_addr_t *dma);
static void etrax_usb_buffer_free(struct usb_bus *bus, size_t size, void *addr, dma_addr_t dma);
static void etrax_usb_add_to_bulk_sb_list(struct urb *urb, int epid);
@@ -476,7 +477,7 @@ static int etrax_usb_submit_ctrl_urb(struct urb *urb);
static int etrax_usb_submit_intr_urb(struct urb *urb);
static int etrax_usb_submit_isoc_urb(struct urb *urb);
-static int etrax_usb_submit_urb(struct urb *urb, int mem_flags);
+static int etrax_usb_submit_urb(struct urb *urb, unsigned mem_flags);
static int etrax_usb_unlink_urb(struct urb *urb, int status);
static int etrax_usb_get_frame_number(struct usb_device *usb_dev);
@@ -1262,7 +1263,7 @@ static int etrax_usb_allocate_epid(void)
return -1;
}
-static int etrax_usb_submit_urb(struct urb *urb, int mem_flags)
+static int etrax_usb_submit_urb(struct urb *urb, unsigned mem_flags)
{
etrax_hc_t *hc;
int ret = -EINVAL;
@@ -4277,7 +4278,8 @@ etrax_usb_bulk_eot_timer_func(unsigned long dummy)
}
static void*
-etrax_usb_buffer_alloc(struct usb_bus* bus, size_t size, int mem_flags, dma_addr_t *dma)
+etrax_usb_buffer_alloc(struct usb_bus* bus, size_t size,
+ unsigned mem_flags, dma_addr_t *dma)
{
return kmalloc(size, mem_flags);
}
diff --git a/drivers/usb/host/isp116x-hcd.c b/drivers/usb/host/isp116x-hcd.c
new file mode 100644
index 00000000000..50b1970fe6b
--- /dev/null
+++ b/drivers/usb/host/isp116x-hcd.c
@@ -0,0 +1,1871 @@
+/*
+ * ISP116x HCD (Host Controller Driver) for USB.
+ *
+ * Derived from the SL811 HCD, rewritten for ISP116x.
+ * Copyright (C) 2005 Olav Kongas <ok@artecdesign.ee>
+ *
+ * Portions:
+ * Copyright (C) 2004 Psion Teklogix (for NetBook PRO)
+ * Copyright (C) 2004 David Brownell
+ *
+ * Periodic scheduling is based on Roman's OHCI code
+ * Copyright (C) 1999 Roman Weissgaerber
+ *
+ */
+
+/*
+ * The driver basically works. A number of people have used it with a range
+ * of devices.
+ *
+ * The driver passes all usbtests 1-14.
+ *
+ * Suspending/resuming of root hub via sysfs works. Remote wakeup works too.
+ * And suspending/resuming of platform device works too. Suspend/resume
+ * via HCD operations vector is not implemented.
+ *
+ * Iso transfer support is not implemented. Adding this would include
+ * implementing recovery from the failure to service the processed ITL
+ * fifo ram in time, which will involve chip reset.
+ *
+ * TODO:
+ + More testing of suspend/resume.
+*/
+
+/*
+ ISP116x chips require certain delays between accesses to its
+ registers. The following timing options exist.
+
+ 1. Configure your memory controller (the best)
+ 2. Implement platform-specific delay function possibly
+ combined with configuring the memory controller; see
+ include/linux/usb-isp116x.h for more info. Some broken
+ memory controllers line LH7A400 SMC need this. Also,
+ uncomment for that to work the following
+ USE_PLATFORM_DELAY macro.
+ 3. Use ndelay (easiest, poorest). For that, uncomment
+ the following USE_NDELAY macro.
+*/
+#define USE_PLATFORM_DELAY
+//#define USE_NDELAY
+
+//#define DEBUG
+//#define VERBOSE
+/* Transfer descriptors. See dump_ptd() for printout format */
+//#define PTD_TRACE
+/* enqueuing/finishing log of urbs */
+//#define URB_TRACE
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/ioport.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/smp_lock.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/list.h>
+#include <linux/interrupt.h>
+#include <linux/usb.h>
+#include <linux/usb_isp116x.h>
+
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/system.h>
+#include <asm/byteorder.h>
+
+#ifndef DEBUG
+# define STUB_DEBUG_FILE
+#endif
+
+#include "../core/hcd.h"
+#include "isp116x.h"
+
+#define DRIVER_VERSION "08 Apr 2005"
+#define DRIVER_DESC "ISP116x USB Host Controller Driver"
+
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
+
+static const char hcd_name[] = "isp116x-hcd";
+
+/*-----------------------------------------------------------------*/
+
+/*
+ Write len bytes to fifo, pad till 32-bit boundary
+ */
+static void write_ptddata_to_fifo(struct isp116x *isp116x, void *buf, int len)
+{
+ u8 *dp = (u8 *) buf;
+ u16 *dp2 = (u16 *) buf;
+ u16 w;
+ int quot = len % 4;
+
+ if ((unsigned long)dp2 & 1) {
+ /* not aligned */
+ for (; len > 1; len -= 2) {
+ w = *dp++;
+ w |= *dp++ << 8;
+ isp116x_raw_write_data16(isp116x, w);
+ }
+ if (len)
+ isp116x_write_data16(isp116x, (u16) * dp);
+ } else {
+ /* aligned */
+ for (; len > 1; len -= 2)
+ isp116x_raw_write_data16(isp116x, *dp2++);
+ if (len)
+ isp116x_write_data16(isp116x, 0xff & *((u8 *) dp2));
+ }
+ if (quot == 1 || quot == 2)
+ isp116x_raw_write_data16(isp116x, 0);
+}
+
+/*
+ Read len bytes from fifo and then read till 32-bit boundary.
+ */
+static void read_ptddata_from_fifo(struct isp116x *isp116x, void *buf, int len)
+{
+ u8 *dp = (u8 *) buf;
+ u16 *dp2 = (u16 *) buf;
+ u16 w;
+ int quot = len % 4;
+
+ if ((unsigned long)dp2 & 1) {
+ /* not aligned */
+ for (; len > 1; len -= 2) {
+ w = isp116x_raw_read_data16(isp116x);
+ *dp++ = w & 0xff;
+ *dp++ = (w >> 8) & 0xff;
+ }
+ if (len)
+ *dp = 0xff & isp116x_read_data16(isp116x);
+ } else {
+ /* aligned */
+ for (; len > 1; len -= 2)
+ *dp2++ = isp116x_raw_read_data16(isp116x);
+ if (len)
+ *(u8 *) dp2 = 0xff & isp116x_read_data16(isp116x);
+ }
+ if (quot == 1 || quot == 2)
+ isp116x_raw_read_data16(isp116x);
+}
+
+/*
+ Write ptd's and data for scheduled transfers into
+ the fifo ram. Fifo must be empty and ready.
+*/
+static void pack_fifo(struct isp116x *isp116x)
+{
+ struct isp116x_ep *ep;
+ struct ptd *ptd;
+ int buflen = isp116x->atl_last_dir == PTD_DIR_IN
+ ? isp116x->atl_bufshrt : isp116x->atl_buflen;
+ int ptd_count = 0;
+
+ isp116x_write_reg16(isp116x, HCuPINT, HCuPINT_AIIEOT);
+ isp116x_write_reg16(isp116x, HCXFERCTR, buflen);
+ isp116x_write_addr(isp116x, HCATLPORT | ISP116x_WRITE_OFFSET);
+ for (ep = isp116x->atl_active; ep; ep = ep->active) {
+ ++ptd_count;
+ ptd = &ep->ptd;
+ dump_ptd(ptd);
+ dump_ptd_out_data(ptd, ep->data);
+ isp116x_write_data16(isp116x, ptd->count);
+ isp116x_write_data16(isp116x, ptd->mps);
+ isp116x_write_data16(isp116x, ptd->len);
+ isp116x_write_data16(isp116x, ptd->faddr);
+ buflen -= sizeof(struct ptd);
+ /* Skip writing data for last IN PTD */
+ if (ep->active || (isp116x->atl_last_dir != PTD_DIR_IN)) {
+ write_ptddata_to_fifo(isp116x, ep->data, ep->length);
+ buflen -= ALIGN(ep->length, 4);
+ }
+ }
+ BUG_ON(buflen);
+}
+
+/*
+ Read the processed ptd's and data from fifo ram back to
+ URBs' buffers. Fifo must be full and done
+*/
+static void unpack_fifo(struct isp116x *isp116x)
+{
+ struct isp116x_ep *ep;
+ struct ptd *ptd;
+ int buflen = isp116x->atl_last_dir == PTD_DIR_IN
+ ? isp116x->atl_buflen : isp116x->atl_bufshrt;
+
+ isp116x_write_reg16(isp116x, HCuPINT, HCuPINT_AIIEOT);
+ isp116x_write_reg16(isp116x, HCXFERCTR, buflen);
+ isp116x_write_addr(isp116x, HCATLPORT);
+ for (ep = isp116x->atl_active; ep; ep = ep->active) {
+ ptd = &ep->ptd;
+ ptd->count = isp116x_read_data16(isp116x);
+ ptd->mps = isp116x_read_data16(isp116x);
+ ptd->len = isp116x_read_data16(isp116x);
+ ptd->faddr = isp116x_read_data16(isp116x);
+ buflen -= sizeof(struct ptd);
+ /* Skip reading data for last Setup or Out PTD */
+ if (ep->active || (isp116x->atl_last_dir == PTD_DIR_IN)) {
+ read_ptddata_from_fifo(isp116x, ep->data, ep->length);
+ buflen -= ALIGN(ep->length, 4);
+ }
+ dump_ptd(ptd);
+ dump_ptd_in_data(ptd, ep->data);
+ }
+ BUG_ON(buflen);
+}
+
+/*---------------------------------------------------------------*/
+
+/*
+ Set up PTD's.
+*/
+static void preproc_atl_queue(struct isp116x *isp116x)
+{
+ struct isp116x_ep *ep;
+ struct urb *urb;
+ struct ptd *ptd;
+ u16 toggle = 0, dir = PTD_DIR_SETUP, len;
+
+ for (ep = isp116x->atl_active; ep; ep = ep->active) {
+ BUG_ON(list_empty(&ep->hep->urb_list));
+ urb = container_of(ep->hep->urb_list.next,
+ struct urb, urb_list);
+ ptd = &ep->ptd;
+ len = ep->length;
+ spin_lock(&urb->lock);
+ ep->data = (unsigned char *)urb->transfer_buffer
+ + urb->actual_length;
+
+ switch (ep->nextpid) {
+ case USB_PID_IN:
+ toggle = usb_gettoggle(urb->dev, ep->epnum, 0);
+ dir = PTD_DIR_IN;
+ break;
+ case USB_PID_OUT:
+ toggle = usb_gettoggle(urb->dev, ep->epnum, 1);
+ dir = PTD_DIR_OUT;
+ break;
+ case USB_PID_SETUP:
+ len = sizeof(struct usb_ctrlrequest);
+ ep->data = urb->setup_packet;
+ break;
+ case USB_PID_ACK:
+ toggle = 1;
+ len = 0;
+ dir = (urb->transfer_buffer_length
+ && usb_pipein(urb->pipe))
+ ? PTD_DIR_OUT : PTD_DIR_IN;
+ break;
+ default:
+ ERR("%s %d: ep->nextpid %d\n", __func__, __LINE__,
+ ep->nextpid);
+ BUG();
+ }
+
+ ptd->count = PTD_CC_MSK | PTD_ACTIVE_MSK | PTD_TOGGLE(toggle);
+ ptd->mps = PTD_MPS(ep->maxpacket)
+ | PTD_SPD(urb->dev->speed == USB_SPEED_LOW)
+ | PTD_EP(ep->epnum);
+ ptd->len = PTD_LEN(len) | PTD_DIR(dir);
+ ptd->faddr = PTD_FA(usb_pipedevice(urb->pipe));
+ spin_unlock(&urb->lock);
+ if (!ep->active) {
+ ptd->mps |= PTD_LAST_MSK;
+ isp116x->atl_last_dir = dir;
+ }
+ isp116x->atl_bufshrt = sizeof(struct ptd) + isp116x->atl_buflen;
+ isp116x->atl_buflen = isp116x->atl_bufshrt + ALIGN(len, 4);
+ }
+}
+
+/*
+ Analyze transfer results, handle partial transfers and errors
+*/
+static void postproc_atl_queue(struct isp116x *isp116x)
+{
+ struct isp116x_ep *ep;
+ struct urb *urb;
+ struct usb_device *udev;
+ struct ptd *ptd;
+ int short_not_ok;
+ u8 cc;
+
+ for (ep = isp116x->atl_active; ep; ep = ep->active) {
+ BUG_ON(list_empty(&ep->hep->urb_list));
+ urb =
+ container_of(ep->hep->urb_list.next, struct urb, urb_list);
+ udev = urb->dev;
+ ptd = &ep->ptd;
+ cc = PTD_GET_CC(ptd);
+
+ spin_lock(&urb->lock);
+ short_not_ok = 1;
+
+ /* Data underrun is special. For allowed underrun
+ we clear the error and continue as normal. For
+ forbidden underrun we finish the DATA stage
+ immediately while for control transfer,
+ we do a STATUS stage. */
+ if (cc == TD_DATAUNDERRUN) {
+ if (!(urb->transfer_flags & URB_SHORT_NOT_OK)) {
+ DBG("Allowed data underrun\n");
+ cc = TD_CC_NOERROR;
+ short_not_ok = 0;
+ } else {
+ ep->error_count = 1;
+ if (usb_pipecontrol(urb->pipe))
+ ep->nextpid = USB_PID_ACK;
+ else
+ usb_settoggle(udev, ep->epnum,
+ ep->nextpid ==
+ USB_PID_OUT,
+ PTD_GET_TOGGLE(ptd) ^ 1);
+ urb->status = cc_to_error[TD_DATAUNDERRUN];
+ spin_unlock(&urb->lock);
+ continue;
+ }
+ }
+ /* Keep underrun error through the STATUS stage */
+ if (urb->status == cc_to_error[TD_DATAUNDERRUN])
+ cc = TD_DATAUNDERRUN;
+
+ if (cc != TD_CC_NOERROR && cc != TD_NOTACCESSED
+ && (++ep->error_count >= 3 || cc == TD_CC_STALL
+ || cc == TD_DATAOVERRUN)) {
+ if (urb->status == -EINPROGRESS)
+ urb->status = cc_to_error[cc];
+ if (ep->nextpid == USB_PID_ACK)
+ ep->nextpid = 0;
+ spin_unlock(&urb->lock);
+ continue;
+ }
+ /* According to usb spec, zero-length Int transfer signals
+ finishing of the urb. Hey, does this apply only
+ for IN endpoints? */
+ if (usb_pipeint(urb->pipe) && !PTD_GET_LEN(ptd)) {
+ if (urb->status == -EINPROGRESS)
+ urb->status = 0;
+ spin_unlock(&urb->lock);
+ continue;
+ }
+
+ /* Relax after previously failed, but later succeeded
+ or correctly NAK'ed retransmission attempt */
+ if (ep->error_count
+ && (cc == TD_CC_NOERROR || cc == TD_NOTACCESSED))
+ ep->error_count = 0;
+
+ /* Take into account idiosyncracies of the isp116x chip
+ regarding toggle bit for failed transfers */
+ if (ep->nextpid == USB_PID_OUT)
+ usb_settoggle(udev, ep->epnum, 1, PTD_GET_TOGGLE(ptd)
+ ^ (ep->error_count > 0));
+ else if (ep->nextpid == USB_PID_IN)
+ usb_settoggle(udev, ep->epnum, 0, PTD_GET_TOGGLE(ptd)
+ ^ (ep->error_count > 0));
+
+ switch (ep->nextpid) {
+ case USB_PID_IN:
+ case USB_PID_OUT:
+ urb->actual_length += PTD_GET_COUNT(ptd);
+ if (PTD_GET_ACTIVE(ptd)
+ || (cc != TD_CC_NOERROR && cc < 0x0E))
+ break;
+ if (urb->transfer_buffer_length != urb->actual_length) {
+ if (short_not_ok)
+ break;
+ } else {
+ if (urb->transfer_flags & URB_ZERO_PACKET
+ && ep->nextpid == USB_PID_OUT
+ && !(PTD_GET_COUNT(ptd) % ep->maxpacket)) {
+ DBG("Zero packet requested\n");
+ break;
+ }
+ }
+ /* All data for this URB is transferred, let's finish */
+ if (usb_pipecontrol(urb->pipe))
+ ep->nextpid = USB_PID_ACK;
+ else if (urb->status == -EINPROGRESS)
+ urb->status = 0;
+ break;
+ case USB_PID_SETUP:
+ if (PTD_GET_ACTIVE(ptd)
+ || (cc != TD_CC_NOERROR && cc < 0x0E))
+ break;
+ if (urb->transfer_buffer_length == urb->actual_length)
+ ep->nextpid = USB_PID_ACK;
+ else if (usb_pipeout(urb->pipe)) {
+ usb_settoggle(udev, 0, 1, 1);
+ ep->nextpid = USB_PID_OUT;
+ } else {
+ usb_settoggle(udev, 0, 0, 1);
+ ep->nextpid = USB_PID_IN;
+ }
+ break;
+ case USB_PID_ACK:
+ if (PTD_GET_ACTIVE(ptd)
+ || (cc != TD_CC_NOERROR && cc < 0x0E))
+ break;
+ if (urb->status == -EINPROGRESS)
+ urb->status = 0;
+ ep->nextpid = 0;
+ break;
+ default:
+ BUG_ON(1);
+ }
+ spin_unlock(&urb->lock);
+ }
+}
+
+/*
+ Take done or failed requests out of schedule. Give back
+ processed urbs.
+*/
+static void finish_request(struct isp116x *isp116x, struct isp116x_ep *ep,
+ struct urb *urb, struct pt_regs *regs)
+__releases(isp116x->lock) __acquires(isp116x->lock)
+{
+ unsigned i;
+
+ urb->hcpriv = NULL;
+ ep->error_count = 0;
+
+ if (usb_pipecontrol(urb->pipe))
+ ep->nextpid = USB_PID_SETUP;
+
+ urb_dbg(urb, "Finish");
+
+ spin_unlock(&isp116x->lock);
+ usb_hcd_giveback_urb(isp116x_to_hcd(isp116x), urb, regs);
+ spin_lock(&isp116x->lock);
+
+ /* take idle endpoints out of the schedule */
+ if (!list_empty(&ep->hep->urb_list))
+ return;
+
+ /* async deschedule */
+ if (!list_empty(&ep->schedule)) {
+ list_del_init(&ep->schedule);
+ return;
+ }
+
+ /* periodic deschedule */
+ DBG("deschedule qh%d/%p branch %d\n", ep->period, ep, ep->branch);
+ for (i = ep->branch; i < PERIODIC_SIZE; i += ep->period) {
+ struct isp116x_ep *temp;
+ struct isp116x_ep **prev = &isp116x->periodic[i];
+
+ while (*prev && ((temp = *prev) != ep))
+ prev = &temp->next;
+ if (*prev)
+ *prev = ep->next;
+ isp116x->load[i] -= ep->load;
+ }
+ ep->branch = PERIODIC_SIZE;
+ isp116x_to_hcd(isp116x)->self.bandwidth_allocated -=
+ ep->load / ep->period;
+
+ /* switch irq type? */
+ if (!--isp116x->periodic_count) {
+ isp116x->irqenb &= ~HCuPINT_SOF;
+ isp116x->irqenb |= HCuPINT_ATL;
+ }
+}
+
+/*
+ Scan transfer lists, schedule transfers, send data off
+ to chip.
+ */
+static void start_atl_transfers(struct isp116x *isp116x)
+{
+ struct isp116x_ep *last_ep = NULL, *ep;
+ struct urb *urb;
+ u16 load = 0;
+ int len, index, speed, byte_time;
+
+ if (atomic_read(&isp116x->atl_finishing))
+ return;
+
+ if (!HC_IS_RUNNING(isp116x_to_hcd(isp116x)->state))
+ return;
+
+ /* FIFO not empty? */
+ if (isp116x_read_reg16(isp116x, HCBUFSTAT) & HCBUFSTAT_ATL_FULL)
+ return;
+
+ isp116x->atl_active = NULL;
+ isp116x->atl_buflen = isp116x->atl_bufshrt = 0;
+
+ /* Schedule int transfers */
+ if (isp116x->periodic_count) {
+ isp116x->fmindex = index =
+ (isp116x->fmindex + 1) & (PERIODIC_SIZE - 1);
+ if ((load = isp116x->load[index])) {
+ /* Bring all int transfers for this frame
+ into the active queue */
+ isp116x->atl_active = last_ep =
+ isp116x->periodic[index];
+ while (last_ep->next)
+ last_ep = (last_ep->active = last_ep->next);
+ last_ep->active = NULL;
+ }
+ }
+
+ /* Schedule control/bulk transfers */
+ list_for_each_entry(ep, &isp116x->async, schedule) {
+ urb = container_of(ep->hep->urb_list.next,
+ struct urb, urb_list);
+ speed = urb->dev->speed;
+ byte_time = speed == USB_SPEED_LOW
+ ? BYTE_TIME_LOWSPEED : BYTE_TIME_FULLSPEED;
+
+ if (ep->nextpid == USB_PID_SETUP) {
+ len = sizeof(struct usb_ctrlrequest);
+ } else if (ep->nextpid == USB_PID_ACK) {
+ len = 0;
+ } else {
+ /* Find current free length ... */
+ len = (MAX_LOAD_LIMIT - load) / byte_time;
+
+ /* ... then limit it to configured max size ... */
+ len = min(len, speed == USB_SPEED_LOW ?
+ MAX_TRANSFER_SIZE_LOWSPEED :
+ MAX_TRANSFER_SIZE_FULLSPEED);
+
+ /* ... and finally cut to the multiple of MaxPacketSize,
+ or to the real length if there's enough room. */
+ if (len <
+ (urb->transfer_buffer_length -
+ urb->actual_length)) {
+ len -= len % ep->maxpacket;
+ if (!len)
+ continue;
+ } else
+ len = urb->transfer_buffer_length -
+ urb->actual_length;
+ BUG_ON(len < 0);
+ }
+
+ load += len * byte_time;
+ if (load > MAX_LOAD_LIMIT)
+ break;
+
+ ep->active = NULL;
+ ep->length = len;
+ if (last_ep)
+ last_ep->active = ep;
+ else
+ isp116x->atl_active = ep;
+ last_ep = ep;
+ }
+
+ /* Avoid starving of endpoints */
+ if ((&isp116x->async)->next != (&isp116x->async)->prev)
+ list_move(&isp116x->async, (&isp116x->async)->next);
+
+ if (isp116x->atl_active) {
+ preproc_atl_queue(isp116x);
+ pack_fifo(isp116x);
+ }
+}
+
+/*
+ Finish the processed transfers
+*/
+static void finish_atl_transfers(struct isp116x *isp116x, struct pt_regs *regs)
+{
+ struct isp116x_ep *ep;
+ struct urb *urb;
+
+ if (!isp116x->atl_active)
+ return;
+ /* Fifo not ready? */
+ if (!(isp116x_read_reg16(isp116x, HCBUFSTAT) & HCBUFSTAT_ATL_DONE))
+ return;
+
+ atomic_inc(&isp116x->atl_finishing);
+ unpack_fifo(isp116x);
+ postproc_atl_queue(isp116x);
+ for (ep = isp116x->atl_active; ep; ep = ep->active) {
+ urb =
+ container_of(ep->hep->urb_list.next, struct urb, urb_list);
+ /* USB_PID_ACK check here avoids finishing of
+ control transfers, for which TD_DATAUNDERRUN
+ occured, while URB_SHORT_NOT_OK was set */
+ if (urb && urb->status != -EINPROGRESS
+ && ep->nextpid != USB_PID_ACK)
+ finish_request(isp116x, ep, urb, regs);
+ }
+ atomic_dec(&isp116x->atl_finishing);
+}
+
+static irqreturn_t isp116x_irq(struct usb_hcd *hcd, struct pt_regs *regs)
+{
+ struct isp116x *isp116x = hcd_to_isp116x(hcd);
+ u16 irqstat;
+ irqreturn_t ret = IRQ_NONE;
+
+ spin_lock(&isp116x->lock);
+ isp116x_write_reg16(isp116x, HCuPINTENB, 0);
+ irqstat = isp116x_read_reg16(isp116x, HCuPINT);
+ isp116x_write_reg16(isp116x, HCuPINT, irqstat);
+
+ if (irqstat & (HCuPINT_ATL | HCuPINT_SOF)) {
+ ret = IRQ_HANDLED;
+ finish_atl_transfers(isp116x, regs);
+ }
+
+ if (irqstat & HCuPINT_OPR) {
+ u32 intstat = isp116x_read_reg32(isp116x, HCINTSTAT);
+ isp116x_write_reg32(isp116x, HCINTSTAT, intstat);
+ if (intstat & HCINT_UE) {
+ ERR("Unrecoverable error\n");
+ /* What should we do here? Reset? */
+ }
+ if (intstat & HCINT_RHSC) {
+ isp116x->rhstatus =
+ isp116x_read_reg32(isp116x, HCRHSTATUS);
+ isp116x->rhport[0] =
+ isp116x_read_reg32(isp116x, HCRHPORT1);
+ isp116x->rhport[1] =
+ isp116x_read_reg32(isp116x, HCRHPORT2);
+ }
+ if (intstat & HCINT_RD) {
+ DBG("---- remote wakeup\n");
+ schedule_work(&isp116x->rh_resume);
+ ret = IRQ_HANDLED;
+ }
+ irqstat &= ~HCuPINT_OPR;
+ ret = IRQ_HANDLED;
+ }
+
+ if (irqstat & (HCuPINT_ATL | HCuPINT_SOF)) {
+ start_atl_transfers(isp116x);
+ }
+
+ isp116x_write_reg16(isp116x, HCuPINTENB, isp116x->irqenb);
+ spin_unlock(&isp116x->lock);
+ return ret;
+}
+
+/*-----------------------------------------------------------------*/
+
+/* usb 1.1 says max 90% of a frame is available for periodic transfers.
+ * this driver doesn't promise that much since it's got to handle an
+ * IRQ per packet; irq handling latencies also use up that time.
+ */
+
+/* out of 1000 us */
+#define MAX_PERIODIC_LOAD 600
+static int balance(struct isp116x *isp116x, u16 period, u16 load)
+{
+ int i, branch = -ENOSPC;
+
+ /* search for the least loaded schedule branch of that period
+ which has enough bandwidth left unreserved. */
+ for (i = 0; i < period; i++) {
+ if (branch < 0 || isp116x->load[branch] > isp116x->load[i]) {
+ int j;
+
+ for (j = i; j < PERIODIC_SIZE; j += period) {
+ if ((isp116x->load[j] + load)
+ > MAX_PERIODIC_LOAD)
+ break;
+ }
+ if (j < PERIODIC_SIZE)
+ continue;
+ branch = i;
+ }
+ }
+ return branch;
+}
+
+/* NB! ALL the code above this point runs with isp116x->lock
+ held, irqs off
+*/
+
+/*-----------------------------------------------------------------*/
+
+static int isp116x_urb_enqueue(struct usb_hcd *hcd,
+ struct usb_host_endpoint *hep, struct urb *urb,
+ unsigned mem_flags)
+{
+ struct isp116x *isp116x = hcd_to_isp116x(hcd);
+ struct usb_device *udev = urb->dev;
+ unsigned int pipe = urb->pipe;
+ int is_out = !usb_pipein(pipe);
+ int type = usb_pipetype(pipe);
+ int epnum = usb_pipeendpoint(pipe);
+ struct isp116x_ep *ep = NULL;
+ unsigned long flags;
+ int i;
+ int ret = 0;
+
+ urb_dbg(urb, "Enqueue");
+
+ if (type == PIPE_ISOCHRONOUS) {
+ ERR("Isochronous transfers not supported\n");
+ urb_dbg(urb, "Refused to enqueue");
+ return -ENXIO;
+ }
+ /* avoid all allocations within spinlocks: request or endpoint */
+ if (!hep->hcpriv) {
+ ep = kcalloc(1, sizeof *ep, mem_flags);
+ if (!ep)
+ return -ENOMEM;
+ }
+
+ spin_lock_irqsave(&isp116x->lock, flags);
+ if (!HC_IS_RUNNING(hcd->state)) {
+ ret = -ENODEV;
+ goto fail;
+ }
+
+ if (hep->hcpriv)
+ ep = hep->hcpriv;
+ else {
+ INIT_LIST_HEAD(&ep->schedule);
+ ep->udev = usb_get_dev(udev);
+ ep->epnum = epnum;
+ ep->maxpacket = usb_maxpacket(udev, urb->pipe, is_out);
+ usb_settoggle(udev, epnum, is_out, 0);
+
+ if (type == PIPE_CONTROL) {
+ ep->nextpid = USB_PID_SETUP;
+ } else if (is_out) {
+ ep->nextpid = USB_PID_OUT;
+ } else {
+ ep->nextpid = USB_PID_IN;
+ }
+
+ if (urb->interval) {
+ /*
+ With INT URBs submitted, the driver works with SOF
+ interrupt enabled and ATL interrupt disabled. After
+ the PTDs are written to fifo ram, the chip starts
+ fifo processing and usb transfers after the next
+ SOF and continues until the transfers are finished
+ (succeeded or failed) or the frame ends. Therefore,
+ the transfers occur only in every second frame,
+ while fifo reading/writing and data processing
+ occur in every other second frame. */
+ if (urb->interval < 2)
+ urb->interval = 2;
+ if (urb->interval > 2 * PERIODIC_SIZE)
+ urb->interval = 2 * PERIODIC_SIZE;
+ ep->period = urb->interval >> 1;
+ ep->branch = PERIODIC_SIZE;
+ ep->load = usb_calc_bus_time(udev->speed,
+ !is_out,
+ (type == PIPE_ISOCHRONOUS),
+ usb_maxpacket(udev, pipe,
+ is_out)) /
+ 1000;
+ }
+ hep->hcpriv = ep;
+ ep->hep = hep;
+ }
+
+ /* maybe put endpoint into schedule */
+ switch (type) {
+ case PIPE_CONTROL:
+ case PIPE_BULK:
+ if (list_empty(&ep->schedule))
+ list_add_tail(&ep->schedule, &isp116x->async);
+ break;
+ case PIPE_INTERRUPT:
+ urb->interval = ep->period;
+ ep->length = min((int)ep->maxpacket,
+ urb->transfer_buffer_length);
+
+ /* urb submitted for already existing endpoint */
+ if (ep->branch < PERIODIC_SIZE)
+ break;
+
+ ret = ep->branch = balance(isp116x, ep->period, ep->load);
+ if (ret < 0)
+ goto fail;
+ ret = 0;
+
+ urb->start_frame = (isp116x->fmindex & (PERIODIC_SIZE - 1))
+ + ep->branch;
+
+ /* sort each schedule branch by period (slow before fast)
+ to share the faster parts of the tree without needing
+ dummy/placeholder nodes */
+ DBG("schedule qh%d/%p branch %d\n", ep->period, ep, ep->branch);
+ for (i = ep->branch; i < PERIODIC_SIZE; i += ep->period) {
+ struct isp116x_ep **prev = &isp116x->periodic[i];
+ struct isp116x_ep *here = *prev;
+
+ while (here && ep != here) {
+ if (ep->period > here->period)
+ break;
+ prev = &here->next;
+ here = *prev;
+ }
+ if (ep != here) {
+ ep->next = here;
+ *prev = ep;
+ }
+ isp116x->load[i] += ep->load;
+ }
+ hcd->self.bandwidth_allocated += ep->load / ep->period;
+
+ /* switch over to SOFint */
+ if (!isp116x->periodic_count++) {
+ isp116x->irqenb &= ~HCuPINT_ATL;
+ isp116x->irqenb |= HCuPINT_SOF;
+ isp116x_write_reg16(isp116x, HCuPINTENB,
+ isp116x->irqenb);
+ }
+ }
+
+ /* in case of unlink-during-submit */
+ spin_lock(&urb->lock);
+ if (urb->status != -EINPROGRESS) {
+ spin_unlock(&urb->lock);
+ finish_request(isp116x, ep, urb, NULL);
+ ret = 0;
+ goto fail;
+ }
+ urb->hcpriv = hep;
+ spin_unlock(&urb->lock);
+ start_atl_transfers(isp116x);
+
+ fail:
+ spin_unlock_irqrestore(&isp116x->lock, flags);
+ return ret;
+}
+
+/*
+ Dequeue URBs.
+*/
+static int isp116x_urb_dequeue(struct usb_hcd *hcd, struct urb *urb)
+{
+ struct isp116x *isp116x = hcd_to_isp116x(hcd);
+ struct usb_host_endpoint *hep;
+ struct isp116x_ep *ep, *ep_act;
+ unsigned long flags;
+
+ spin_lock_irqsave(&isp116x->lock, flags);
+ hep = urb->hcpriv;
+ /* URB already unlinked (or never linked)? */
+ if (!hep) {
+ spin_unlock_irqrestore(&isp116x->lock, flags);
+ return 0;
+ }
+ ep = hep->hcpriv;
+ WARN_ON(hep != ep->hep);
+
+ /* In front of queue? */
+ if (ep->hep->urb_list.next == &urb->urb_list)
+ /* active? */
+ for (ep_act = isp116x->atl_active; ep_act;
+ ep_act = ep_act->active)
+ if (ep_act == ep) {
+ VDBG("dequeue, urb %p active; wait for irq\n",
+ urb);
+ urb = NULL;
+ break;
+ }
+
+ if (urb)
+ finish_request(isp116x, ep, urb, NULL);
+
+ spin_unlock_irqrestore(&isp116x->lock, flags);
+ return 0;
+}
+
+static void isp116x_endpoint_disable(struct usb_hcd *hcd,
+ struct usb_host_endpoint *hep)
+{
+ int i;
+ struct isp116x_ep *ep = hep->hcpriv;;
+
+ if (!ep)
+ return;
+
+ /* assume we'd just wait for the irq */
+ for (i = 0; i < 100 && !list_empty(&hep->urb_list); i++)
+ msleep(3);
+ if (!list_empty(&hep->urb_list))
+ WARN("ep %p not empty?\n", ep);
+
+ usb_put_dev(ep->udev);
+ kfree(ep);
+ hep->hcpriv = NULL;
+}
+
+static int isp116x_get_frame(struct usb_hcd *hcd)
+{
+ struct isp116x *isp116x = hcd_to_isp116x(hcd);
+ u32 fmnum;
+ unsigned long flags;
+
+ spin_lock_irqsave(&isp116x->lock, flags);
+ fmnum = isp116x_read_reg32(isp116x, HCFMNUM);
+ spin_unlock_irqrestore(&isp116x->lock, flags);
+ return (int)fmnum;
+}
+
+/*----------------------------------------------------------------*/
+
+/*
+ Adapted from ohci-hub.c. Currently we don't support autosuspend.
+*/
+static int isp116x_hub_status_data(struct usb_hcd *hcd, char *buf)
+{
+ struct isp116x *isp116x = hcd_to_isp116x(hcd);
+ int ports, i, changed = 0;
+
+ if (!HC_IS_RUNNING(hcd->state))
+ return -ESHUTDOWN;
+
+ ports = isp116x->rhdesca & RH_A_NDP;
+
+ /* init status */
+ if (isp116x->rhstatus & (RH_HS_LPSC | RH_HS_OCIC))
+ buf[0] = changed = 1;
+ else
+ buf[0] = 0;
+
+ for (i = 0; i < ports; i++) {
+ u32 status = isp116x->rhport[i];
+
+ if (status & (RH_PS_CSC | RH_PS_PESC | RH_PS_PSSC
+ | RH_PS_OCIC | RH_PS_PRSC)) {
+ changed = 1;
+ buf[0] |= 1 << (i + 1);
+ continue;
+ }
+ }
+ return changed;
+}
+
+static void isp116x_hub_descriptor(struct isp116x *isp116x,
+ struct usb_hub_descriptor *desc)
+{
+ u32 reg = isp116x->rhdesca;
+
+ desc->bDescriptorType = 0x29;
+ desc->bDescLength = 9;
+ desc->bHubContrCurrent = 0;
+ desc->bNbrPorts = (u8) (reg & 0x3);
+ /* Power switching, device type, overcurrent. */
+ desc->wHubCharacteristics =
+ (__force __u16) cpu_to_le16((u16) ((reg >> 8) & 0x1f));
+ desc->bPwrOn2PwrGood = (u8) ((reg >> 24) & 0xff);
+ /* two bitmaps: ports removable, and legacy PortPwrCtrlMask */
+ desc->bitmap[0] = desc->bNbrPorts == 1 ? 1 << 1 : 3 << 1;
+ desc->bitmap[1] = ~0;
+}
+
+/* Perform reset of a given port.
+ It would be great to just start the reset and let the
+ USB core to clear the reset in due time. However,
+ root hub ports should be reset for at least 50 ms, while
+ our chip stays in reset for about 10 ms. I.e., we must
+ repeatedly reset it ourself here.
+*/
+static inline void root_port_reset(struct isp116x *isp116x, unsigned port)
+{
+ u32 tmp;
+ unsigned long flags, t;
+
+ /* Root hub reset should be 50 ms, but some devices
+ want it even longer. */
+ t = jiffies + msecs_to_jiffies(100);
+
+ while (time_before(jiffies, t)) {
+ spin_lock_irqsave(&isp116x->lock, flags);
+ /* spin until any current reset finishes */
+ for (;;) {
+ tmp = isp116x_read_reg32(isp116x, port ?
+ HCRHPORT2 : HCRHPORT1);
+ if (!(tmp & RH_PS_PRS))
+ break;
+ udelay(500);
+ }
+ /* Don't reset a disconnected port */
+ if (!(tmp & RH_PS_CCS)) {
+ spin_unlock_irqrestore(&isp116x->lock, flags);
+ break;
+ }
+ /* Reset lasts 10ms (claims datasheet) */
+ isp116x_write_reg32(isp116x, port ? HCRHPORT2 :
+ HCRHPORT1, (RH_PS_PRS));
+ spin_unlock_irqrestore(&isp116x->lock, flags);
+ msleep(10);
+ }
+}
+
+/* Adapted from ohci-hub.c */
+static int isp116x_hub_control(struct usb_hcd *hcd,
+ u16 typeReq,
+ u16 wValue, u16 wIndex, char *buf, u16 wLength)
+{
+ struct isp116x *isp116x = hcd_to_isp116x(hcd);
+ int ret = 0;
+ unsigned long flags;
+ int ports = isp116x->rhdesca & RH_A_NDP;
+ u32 tmp = 0;
+
+ switch (typeReq) {
+ case ClearHubFeature:
+ DBG("ClearHubFeature: ");
+ switch (wValue) {
+ case C_HUB_OVER_CURRENT:
+ DBG("C_HUB_OVER_CURRENT\n");
+ spin_lock_irqsave(&isp116x->lock, flags);
+ isp116x_write_reg32(isp116x, HCRHSTATUS, RH_HS_OCIC);
+ spin_unlock_irqrestore(&isp116x->lock, flags);
+ case C_HUB_LOCAL_POWER:
+ DBG("C_HUB_LOCAL_POWER\n");
+ break;
+ default:
+ goto error;
+ }
+ break;
+ case SetHubFeature:
+ DBG("SetHubFeature: ");
+ switch (wValue) {
+ case C_HUB_OVER_CURRENT:
+ case C_HUB_LOCAL_POWER:
+ DBG("C_HUB_OVER_CURRENT or C_HUB_LOCAL_POWER\n");
+ break;
+ default:
+ goto error;
+ }
+ break;
+ case GetHubDescriptor:
+ DBG("GetHubDescriptor\n");
+ isp116x_hub_descriptor(isp116x,
+ (struct usb_hub_descriptor *)buf);
+ break;
+ case GetHubStatus:
+ DBG("GetHubStatus\n");
+ *(__le32 *) buf = 0;
+ break;
+ case GetPortStatus:
+ DBG("GetPortStatus\n");
+ if (!wIndex || wIndex > ports)
+ goto error;
+ tmp = isp116x->rhport[--wIndex];
+ *(__le32 *) buf = cpu_to_le32(tmp);
+ DBG("GetPortStatus: port[%d] %08x\n", wIndex + 1, tmp);
+ break;
+ case ClearPortFeature:
+ DBG("ClearPortFeature: ");
+ if (!wIndex || wIndex > ports)
+ goto error;
+ wIndex--;
+
+ switch (wValue) {
+ case USB_PORT_FEAT_ENABLE:
+ DBG("USB_PORT_FEAT_ENABLE\n");
+ tmp = RH_PS_CCS;
+ break;
+ case USB_PORT_FEAT_C_ENABLE:
+ DBG("USB_PORT_FEAT_C_ENABLE\n");
+ tmp = RH_PS_PESC;
+ break;
+ case USB_PORT_FEAT_SUSPEND:
+ DBG("USB_PORT_FEAT_SUSPEND\n");
+ tmp = RH_PS_POCI;
+ break;
+ case USB_PORT_FEAT_C_SUSPEND:
+ DBG("USB_PORT_FEAT_C_SUSPEND\n");
+ tmp = RH_PS_PSSC;
+ break;
+ case USB_PORT_FEAT_POWER:
+ DBG("USB_PORT_FEAT_POWER\n");
+ tmp = RH_PS_LSDA;
+ break;
+ case USB_PORT_FEAT_C_CONNECTION:
+ DBG("USB_PORT_FEAT_C_CONNECTION\n");
+ tmp = RH_PS_CSC;
+ break;
+ case USB_PORT_FEAT_C_OVER_CURRENT:
+ DBG("USB_PORT_FEAT_C_OVER_CURRENT\n");
+ tmp = RH_PS_OCIC;
+ break;
+ case USB_PORT_FEAT_C_RESET:
+ DBG("USB_PORT_FEAT_C_RESET\n");
+ tmp = RH_PS_PRSC;
+ break;
+ default:
+ goto error;
+ }
+ spin_lock_irqsave(&isp116x->lock, flags);
+ isp116x_write_reg32(isp116x, wIndex
+ ? HCRHPORT2 : HCRHPORT1, tmp);
+ isp116x->rhport[wIndex] =
+ isp116x_read_reg32(isp116x, wIndex ? HCRHPORT2 : HCRHPORT1);
+ spin_unlock_irqrestore(&isp116x->lock, flags);
+ break;
+ case SetPortFeature:
+ DBG("SetPortFeature: ");
+ if (!wIndex || wIndex > ports)
+ goto error;
+ wIndex--;
+ switch (wValue) {
+ case USB_PORT_FEAT_SUSPEND:
+ DBG("USB_PORT_FEAT_SUSPEND\n");
+ spin_lock_irqsave(&isp116x->lock, flags);
+ isp116x_write_reg32(isp116x, wIndex
+ ? HCRHPORT2 : HCRHPORT1, RH_PS_PSS);
+ break;
+ case USB_PORT_FEAT_POWER:
+ DBG("USB_PORT_FEAT_POWER\n");
+ spin_lock_irqsave(&isp116x->lock, flags);
+ isp116x_write_reg32(isp116x, wIndex
+ ? HCRHPORT2 : HCRHPORT1, RH_PS_PPS);
+ break;
+ case USB_PORT_FEAT_RESET:
+ DBG("USB_PORT_FEAT_RESET\n");
+ root_port_reset(isp116x, wIndex);
+ spin_lock_irqsave(&isp116x->lock, flags);
+ break;
+ default:
+ goto error;
+ }
+ isp116x->rhport[wIndex] =
+ isp116x_read_reg32(isp116x, wIndex ? HCRHPORT2 : HCRHPORT1);
+ spin_unlock_irqrestore(&isp116x->lock, flags);
+ break;
+
+ default:
+ error:
+ /* "protocol stall" on error */
+ DBG("PROTOCOL STALL\n");
+ ret = -EPIPE;
+ }
+ return ret;
+}
+
+#ifdef CONFIG_PM
+
+static int isp116x_hub_suspend(struct usb_hcd *hcd)
+{
+ struct isp116x *isp116x = hcd_to_isp116x(hcd);
+ unsigned long flags;
+ u32 val;
+ int ret = 0;
+
+ spin_lock_irqsave(&isp116x->lock, flags);
+
+ val = isp116x_read_reg32(isp116x, HCCONTROL);
+ switch (val & HCCONTROL_HCFS) {
+ case HCCONTROL_USB_OPER:
+ hcd->state = HC_STATE_QUIESCING;
+ val &= (~HCCONTROL_HCFS & ~HCCONTROL_RWE);
+ val |= HCCONTROL_USB_SUSPEND;
+ if (hcd->remote_wakeup)
+ val |= HCCONTROL_RWE;
+ /* Wait for usb transfers to finish */
+ mdelay(2);
+ isp116x_write_reg32(isp116x, HCCONTROL, val);
+ hcd->state = HC_STATE_SUSPENDED;
+ /* Wait for devices to suspend */
+ mdelay(5);
+ case HCCONTROL_USB_SUSPEND:
+ break;
+ case HCCONTROL_USB_RESUME:
+ isp116x_write_reg32(isp116x, HCCONTROL,
+ (val & ~HCCONTROL_HCFS) |
+ HCCONTROL_USB_RESET);
+ case HCCONTROL_USB_RESET:
+ ret = -EBUSY;
+ break;
+ default:
+ ret = -EINVAL;
+ }
+
+ spin_unlock_irqrestore(&isp116x->lock, flags);
+ return ret;
+}
+
+static int isp116x_hub_resume(struct usb_hcd *hcd)
+{
+ struct isp116x *isp116x = hcd_to_isp116x(hcd);
+ u32 val;
+ int ret = -EINPROGRESS;
+
+ msleep(5);
+ spin_lock_irq(&isp116x->lock);
+
+ val = isp116x_read_reg32(isp116x, HCCONTROL);
+ switch (val & HCCONTROL_HCFS) {
+ case HCCONTROL_USB_SUSPEND:
+ val &= ~HCCONTROL_HCFS;
+ val |= HCCONTROL_USB_RESUME;
+ isp116x_write_reg32(isp116x, HCCONTROL, val);
+ case HCCONTROL_USB_RESUME:
+ break;
+ case HCCONTROL_USB_OPER:
+ /* Without setting power_state here the
+ SUSPENDED state won't be removed from
+ sysfs/usbN/power.state as a response to remote
+ wakeup. Maybe in the future. */
+ hcd->self.root_hub->dev.power.power_state = PMSG_ON;
+ ret = 0;
+ break;
+ default:
+ ret = -EBUSY;
+ }
+
+ if (ret != -EINPROGRESS) {
+ spin_unlock_irq(&isp116x->lock);
+ return ret;
+ }
+
+ val = isp116x->rhdesca & RH_A_NDP;
+ while (val--) {
+ u32 stat =
+ isp116x_read_reg32(isp116x, val ? HCRHPORT2 : HCRHPORT1);
+ /* force global, not selective, resume */
+ if (!(stat & RH_PS_PSS))
+ continue;
+ DBG("%s: Resuming port %d\n", __func__, val);
+ isp116x_write_reg32(isp116x, RH_PS_POCI, val
+ ? HCRHPORT2 : HCRHPORT1);
+ }
+ spin_unlock_irq(&isp116x->lock);
+
+ hcd->state = HC_STATE_RESUMING;
+ mdelay(20);
+
+ /* Go operational */
+ spin_lock_irq(&isp116x->lock);
+ val = isp116x_read_reg32(isp116x, HCCONTROL);
+ isp116x_write_reg32(isp116x, HCCONTROL,
+ (val & ~HCCONTROL_HCFS) | HCCONTROL_USB_OPER);
+ spin_unlock_irq(&isp116x->lock);
+ /* see analogous comment above */
+ hcd->self.root_hub->dev.power.power_state = PMSG_ON;
+ hcd->state = HC_STATE_RUNNING;
+
+ return 0;
+}
+
+static void isp116x_rh_resume(void *_hcd)
+{
+ struct usb_hcd *hcd = _hcd;
+
+ usb_resume_device(hcd->self.root_hub);
+}
+
+#else
+
+#define isp116x_hub_suspend NULL
+#define isp116x_hub_resume NULL
+
+static void isp116x_rh_resume(void *_hcd)
+{
+}
+
+#endif
+
+/*-----------------------------------------------------------------*/
+
+#ifdef STUB_DEBUG_FILE
+
+static inline void create_debug_file(struct isp116x *isp116x)
+{
+}
+
+static inline void remove_debug_file(struct isp116x *isp116x)
+{
+}
+
+#else
+
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+
+static void dump_irq(struct seq_file *s, char *label, u16 mask)
+{
+ seq_printf(s, "%s %04x%s%s%s%s%s%s\n", label, mask,
+ mask & HCuPINT_CLKRDY ? " clkrdy" : "",
+ mask & HCuPINT_SUSP ? " susp" : "",
+ mask & HCuPINT_OPR ? " opr" : "",
+ mask & HCuPINT_AIIEOT ? " eot" : "",
+ mask & HCuPINT_ATL ? " atl" : "",
+ mask & HCuPINT_SOF ? " sof" : "");
+}
+
+static void dump_int(struct seq_file *s, char *label, u32 mask)
+{
+ seq_printf(s, "%s %08x%s%s%s%s%s%s%s\n", label, mask,
+ mask & HCINT_MIE ? " MIE" : "",
+ mask & HCINT_RHSC ? " rhsc" : "",
+ mask & HCINT_FNO ? " fno" : "",
+ mask & HCINT_UE ? " ue" : "",
+ mask & HCINT_RD ? " rd" : "",
+ mask & HCINT_SF ? " sof" : "", mask & HCINT_SO ? " so" : "");
+}
+
+static int proc_isp116x_show(struct seq_file *s, void *unused)
+{
+ struct isp116x *isp116x = s->private;
+ struct isp116x_ep *ep;
+ struct urb *urb;
+ unsigned i;
+ char *str;
+
+ seq_printf(s, "%s\n%s version %s\n",
+ isp116x_to_hcd(isp116x)->product_desc, hcd_name,
+ DRIVER_VERSION);
+
+ if (HC_IS_SUSPENDED(isp116x_to_hcd(isp116x)->state)) {
+ seq_printf(s, "HCD is suspended\n");
+ return 0;
+ }
+ if (!HC_IS_RUNNING(isp116x_to_hcd(isp116x)->state)) {
+ seq_printf(s, "HCD not running\n");
+ return 0;
+ }
+
+ spin_lock_irq(&isp116x->lock);
+
+ dump_irq(s, "hc_irq_enable", isp116x_read_reg16(isp116x, HCuPINTENB));
+ dump_irq(s, "hc_irq_status", isp116x_read_reg16(isp116x, HCuPINT));
+ dump_int(s, "hc_int_enable", isp116x_read_reg32(isp116x, HCINTENB));
+ dump_int(s, "hc_int_status", isp116x_read_reg32(isp116x, HCINTSTAT));
+
+ list_for_each_entry(ep, &isp116x->async, schedule) {
+
+ switch (ep->nextpid) {
+ case USB_PID_IN:
+ str = "in";
+ break;
+ case USB_PID_OUT:
+ str = "out";
+ break;
+ case USB_PID_SETUP:
+ str = "setup";
+ break;
+ case USB_PID_ACK:
+ str = "status";
+ break;
+ default:
+ str = "?";
+ break;
+ };
+ seq_printf(s, "%p, ep%d%s, maxpacket %d:\n", ep,
+ ep->epnum, str, ep->maxpacket);
+ list_for_each_entry(urb, &ep->hep->urb_list, urb_list) {
+ seq_printf(s, " urb%p, %d/%d\n", urb,
+ urb->actual_length,
+ urb->transfer_buffer_length);
+ }
+ }
+ if (!list_empty(&isp116x->async))
+ seq_printf(s, "\n");
+
+ seq_printf(s, "periodic size= %d\n", PERIODIC_SIZE);
+
+ for (i = 0; i < PERIODIC_SIZE; i++) {
+ ep = isp116x->periodic[i];
+ if (!ep)
+ continue;
+ seq_printf(s, "%2d [%3d]:\n", i, isp116x->load[i]);
+
+ /* DUMB: prints shared entries multiple times */
+ do {
+ seq_printf(s, " %d/%p (%sdev%d ep%d%s max %d)\n",
+ ep->period, ep,
+ (ep->udev->speed ==
+ USB_SPEED_FULL) ? "" : "ls ",
+ ep->udev->devnum, ep->epnum,
+ (ep->epnum ==
+ 0) ? "" : ((ep->nextpid ==
+ USB_PID_IN) ? "in" : "out"),
+ ep->maxpacket);
+ ep = ep->next;
+ } while (ep);
+ }
+ spin_unlock_irq(&isp116x->lock);
+ seq_printf(s, "\n");
+
+ return 0;
+}
+
+static int proc_isp116x_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, proc_isp116x_show, PDE(inode)->data);
+}
+
+static struct file_operations proc_ops = {
+ .open = proc_isp116x_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+/* expect just one isp116x per system */
+static const char proc_filename[] = "driver/isp116x";
+
+static void create_debug_file(struct isp116x *isp116x)
+{
+ struct proc_dir_entry *pde;
+
+ pde = create_proc_entry(proc_filename, 0, NULL);
+ if (pde == NULL)
+ return;
+
+ pde->proc_fops = &proc_ops;
+ pde->data = isp116x;
+ isp116x->pde = pde;
+}
+
+static void remove_debug_file(struct isp116x *isp116x)
+{
+ if (isp116x->pde)
+ remove_proc_entry(proc_filename, NULL);
+}
+
+#endif
+
+/*-----------------------------------------------------------------*/
+
+/*
+ Software reset - can be called from any contect.
+*/
+static int isp116x_sw_reset(struct isp116x *isp116x)
+{
+ int retries = 15;
+ unsigned long flags;
+ int ret = 0;
+
+ spin_lock_irqsave(&isp116x->lock, flags);
+ isp116x_write_reg16(isp116x, HCSWRES, HCSWRES_MAGIC);
+ isp116x_write_reg32(isp116x, HCCMDSTAT, HCCMDSTAT_HCR);
+ while (--retries) {
+ /* It usually resets within 1 ms */
+ mdelay(1);
+ if (!(isp116x_read_reg32(isp116x, HCCMDSTAT) & HCCMDSTAT_HCR))
+ break;
+ }
+ if (!retries) {
+ ERR("Software reset timeout\n");
+ ret = -ETIME;
+ }
+ spin_unlock_irqrestore(&isp116x->lock, flags);
+ return ret;
+}
+
+/*
+ Reset. Tries to perform platform-specific hardware
+ reset first; falls back to software reset.
+*/
+static int isp116x_reset(struct usb_hcd *hcd)
+{
+ struct isp116x *isp116x = hcd_to_isp116x(hcd);
+ unsigned long t;
+ u16 clkrdy = 0;
+ int ret = 0, timeout = 15 /* ms */ ;
+
+ if (isp116x->board && isp116x->board->reset) {
+ /* Hardware reset */
+ isp116x->board->reset(hcd->self.controller, 1);
+ msleep(10);
+ if (isp116x->board->clock)
+ isp116x->board->clock(hcd->self.controller, 1);
+ msleep(1);
+ isp116x->board->reset(hcd->self.controller, 0);
+ } else
+ ret = isp116x_sw_reset(isp116x);
+
+ if (ret)
+ return ret;
+
+ t = jiffies + msecs_to_jiffies(timeout);
+ while (time_before_eq(jiffies, t)) {
+ msleep(4);
+ spin_lock_irq(&isp116x->lock);
+ clkrdy = isp116x_read_reg16(isp116x, HCuPINT) & HCuPINT_CLKRDY;
+ spin_unlock_irq(&isp116x->lock);
+ if (clkrdy)
+ break;
+ }
+ if (!clkrdy) {
+ ERR("Clock not ready after 20ms\n");
+ /* After sw_reset the clock won't report to be ready, if
+ H_WAKEUP pin is high. */
+ if (!isp116x->board || !isp116x->board->reset)
+ ERR("The driver does not support hardware wakeup.\n");
+ ERR("Please make sure that the H_WAKEUP pin "
+ "is pulled low!\n");
+ ret = -ENODEV;
+ }
+ return ret;
+}
+
+static void isp116x_stop(struct usb_hcd *hcd)
+{
+ struct isp116x *isp116x = hcd_to_isp116x(hcd);
+ unsigned long flags;
+ u32 val;
+
+ spin_lock_irqsave(&isp116x->lock, flags);
+ isp116x_write_reg16(isp116x, HCuPINTENB, 0);
+
+ /* Switch off ports' power, some devices don't come up
+ after next 'insmod' without this */
+ val = isp116x_read_reg32(isp116x, HCRHDESCA);
+ val &= ~(RH_A_NPS | RH_A_PSM);
+ isp116x_write_reg32(isp116x, HCRHDESCA, val);
+ isp116x_write_reg32(isp116x, HCRHSTATUS, RH_HS_LPS);
+ spin_unlock_irqrestore(&isp116x->lock, flags);
+
+ /* Put the chip into reset state */
+ if (isp116x->board && isp116x->board->reset)
+ isp116x->board->reset(hcd->self.controller, 0);
+ else
+ isp116x_sw_reset(isp116x);
+
+ /* Stop the clock */
+ if (isp116x->board && isp116x->board->clock)
+ isp116x->board->clock(hcd->self.controller, 0);
+}
+
+/*
+ Configure the chip. The chip must be successfully reset by now.
+*/
+static int isp116x_start(struct usb_hcd *hcd)
+{
+ struct isp116x *isp116x = hcd_to_isp116x(hcd);
+ struct isp116x_platform_data *board = isp116x->board;
+ u32 val;
+ unsigned long flags;
+
+ spin_lock_irqsave(&isp116x->lock, flags);
+
+ /* clear interrupt status and disable all interrupt sources */
+ isp116x_write_reg16(isp116x, HCuPINT, 0xff);
+ isp116x_write_reg16(isp116x, HCuPINTENB, 0);
+
+ val = isp116x_read_reg16(isp116x, HCCHIPID);
+ if ((val & HCCHIPID_MASK) != HCCHIPID_MAGIC) {
+ ERR("Invalid chip ID %04x\n", val);
+ spin_unlock_irqrestore(&isp116x->lock, flags);
+ return -ENODEV;
+ }
+
+ isp116x_write_reg16(isp116x, HCITLBUFLEN, ISP116x_ITL_BUFSIZE);
+ isp116x_write_reg16(isp116x, HCATLBUFLEN, ISP116x_ATL_BUFSIZE);
+
+ /* ----- HW conf */
+ val = HCHWCFG_INT_ENABLE | HCHWCFG_DBWIDTH(1);
+ if (board->sel15Kres)
+ val |= HCHWCFG_15KRSEL;
+ /* Remote wakeup won't work without working clock */
+ if (board->clknotstop || board->remote_wakeup_enable)
+ val |= HCHWCFG_CLKNOTSTOP;
+ if (board->oc_enable)
+ val |= HCHWCFG_ANALOG_OC;
+ if (board->int_act_high)
+ val |= HCHWCFG_INT_POL;
+ if (board->int_edge_triggered)
+ val |= HCHWCFG_INT_TRIGGER;
+ isp116x_write_reg16(isp116x, HCHWCFG, val);
+
+ /* ----- Root hub conf */
+ val = 0;
+ /* AN10003_1.pdf recommends NPS to be always 1 */
+ if (board->no_power_switching)
+ val |= RH_A_NPS;
+ if (board->power_switching_mode)
+ val |= RH_A_PSM;
+ if (board->potpg)
+ val |= (board->potpg << 24) & RH_A_POTPGT;
+ else
+ val |= (25 << 24) & RH_A_POTPGT;
+ isp116x_write_reg32(isp116x, HCRHDESCA, val);
+ isp116x->rhdesca = isp116x_read_reg32(isp116x, HCRHDESCA);
+
+ val = RH_B_PPCM;
+ isp116x_write_reg32(isp116x, HCRHDESCB, val);
+ isp116x->rhdescb = isp116x_read_reg32(isp116x, HCRHDESCB);
+
+ val = 0;
+ if (board->remote_wakeup_enable) {
+ hcd->can_wakeup = 1;
+ val |= RH_HS_DRWE;
+ }
+ isp116x_write_reg32(isp116x, HCRHSTATUS, val);
+ isp116x->rhstatus = isp116x_read_reg32(isp116x, HCRHSTATUS);
+
+ isp116x_write_reg32(isp116x, HCFMINTVL, 0x27782edf);
+
+ hcd->state = HC_STATE_RUNNING;
+
+ /* Set up interrupts */
+ isp116x->intenb = HCINT_MIE | HCINT_RHSC | HCINT_UE;
+ if (board->remote_wakeup_enable)
+ isp116x->intenb |= HCINT_RD;
+ isp116x->irqenb = HCuPINT_ATL | HCuPINT_OPR; /* | HCuPINT_SUSP; */
+ isp116x_write_reg32(isp116x, HCINTENB, isp116x->intenb);
+ isp116x_write_reg16(isp116x, HCuPINTENB, isp116x->irqenb);
+
+ /* Go operational */
+ val = HCCONTROL_USB_OPER;
+ /* Remote wakeup connected - NOT SUPPORTED */
+ /* if (board->remote_wakeup_connected)
+ val |= HCCONTROL_RWC; */
+ if (board->remote_wakeup_enable)
+ val |= HCCONTROL_RWE;
+ isp116x_write_reg32(isp116x, HCCONTROL, val);
+
+ /* Disable ports to avoid race in device enumeration */
+ isp116x_write_reg32(isp116x, HCRHPORT1, RH_PS_CCS);
+ isp116x_write_reg32(isp116x, HCRHPORT2, RH_PS_CCS);
+
+ isp116x_show_regs(isp116x);
+ spin_unlock_irqrestore(&isp116x->lock, flags);
+ return 0;
+}
+
+/*-----------------------------------------------------------------*/
+
+static struct hc_driver isp116x_hc_driver = {
+ .description = hcd_name,
+ .product_desc = "ISP116x Host Controller",
+ .hcd_priv_size = sizeof(struct isp116x),
+
+ .irq = isp116x_irq,
+ .flags = HCD_USB11,
+
+ .reset = isp116x_reset,
+ .start = isp116x_start,
+ .stop = isp116x_stop,
+
+ .urb_enqueue = isp116x_urb_enqueue,
+ .urb_dequeue = isp116x_urb_dequeue,
+ .endpoint_disable = isp116x_endpoint_disable,
+
+ .get_frame_number = isp116x_get_frame,
+
+ .hub_status_data = isp116x_hub_status_data,
+ .hub_control = isp116x_hub_control,
+ .hub_suspend = isp116x_hub_suspend,
+ .hub_resume = isp116x_hub_resume,
+};
+
+/*----------------------------------------------------------------*/
+
+static int __init_or_module isp116x_remove(struct device *dev)
+{
+ struct usb_hcd *hcd = dev_get_drvdata(dev);
+ struct isp116x *isp116x;
+ struct platform_device *pdev;
+ struct resource *res;
+
+ if(!hcd)
+ return 0;
+ isp116x = hcd_to_isp116x(hcd);
+ pdev = container_of(dev, struct platform_device, dev);
+ remove_debug_file(isp116x);
+ usb_remove_hcd(hcd);
+
+ iounmap(isp116x->data_reg);
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+ release_mem_region(res->start, 2);
+ iounmap(isp116x->addr_reg);
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ release_mem_region(res->start, 2);
+
+ usb_put_hcd(hcd);
+ return 0;
+}
+
+#define resource_len(r) (((r)->end - (r)->start) + 1)
+
+static int __init isp116x_probe(struct device *dev)
+{
+ struct usb_hcd *hcd;
+ struct isp116x *isp116x;
+ struct platform_device *pdev;
+ struct resource *addr, *data;
+ void __iomem *addr_reg;
+ void __iomem *data_reg;
+ int irq;
+ int ret = 0;
+
+ pdev = container_of(dev, struct platform_device, dev);
+ if (pdev->num_resources < 3) {
+ ret = -ENODEV;
+ goto err1;
+ }
+
+ data = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ addr = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+ irq = platform_get_irq(pdev, 0);
+ if (!addr || !data || irq < 0) {
+ ret = -ENODEV;
+ goto err1;
+ }
+
+ if (dev->dma_mask) {
+ DBG("DMA not supported\n");
+ ret = -EINVAL;
+ goto err1;
+ }
+
+ if (!request_mem_region(addr->start, 2, hcd_name)) {
+ ret = -EBUSY;
+ goto err1;
+ }
+ addr_reg = ioremap(addr->start, resource_len(addr));
+ if (addr_reg == NULL) {
+ ret = -ENOMEM;
+ goto err2;
+ }
+ if (!request_mem_region(data->start, 2, hcd_name)) {
+ ret = -EBUSY;
+ goto err3;
+ }
+ data_reg = ioremap(data->start, resource_len(data));
+ if (data_reg == NULL) {
+ ret = -ENOMEM;
+ goto err4;
+ }
+
+ /* allocate and initialize hcd */
+ hcd = usb_create_hcd(&isp116x_hc_driver, dev, dev->bus_id);
+ if (!hcd) {
+ ret = -ENOMEM;
+ goto err5;
+ }
+ /* this rsrc_start is bogus */
+ hcd->rsrc_start = addr->start;
+ isp116x = hcd_to_isp116x(hcd);
+ isp116x->data_reg = data_reg;
+ isp116x->addr_reg = addr_reg;
+ spin_lock_init(&isp116x->lock);
+ INIT_LIST_HEAD(&isp116x->async);
+ INIT_WORK(&isp116x->rh_resume, isp116x_rh_resume, hcd);
+ isp116x->board = dev->platform_data;
+
+ if (!isp116x->board) {
+ ERR("Platform data structure not initialized\n");
+ ret = -ENODEV;
+ goto err6;
+ }
+ if (isp116x_check_platform_delay(isp116x)) {
+ ERR("USE_PLATFORM_DELAY defined, but delay function not "
+ "implemented.\n");
+ ERR("See comments in drivers/usb/host/isp116x-hcd.c\n");
+ ret = -ENODEV;
+ goto err6;
+ }
+
+ ret = usb_add_hcd(hcd, irq, SA_INTERRUPT);
+ if (ret != 0)
+ goto err6;
+
+ create_debug_file(isp116x);
+ return 0;
+
+ err6:
+ usb_put_hcd(hcd);
+ err5:
+ iounmap(data_reg);
+ err4:
+ release_mem_region(data->start, 2);
+ err3:
+ iounmap(addr_reg);
+ err2:
+ release_mem_region(addr->start, 2);
+ err1:
+ ERR("init error, %d\n", ret);
+ return ret;
+}
+
+#ifdef CONFIG_PM
+/*
+ Suspend of platform device
+*/
+static int isp116x_suspend(struct device *dev, pm_message_t state, u32 phase)
+{
+ int ret = 0;
+ struct usb_hcd *hcd = dev_get_drvdata(dev);
+
+ VDBG("%s: state %x, phase %x\n", __func__, state, phase);
+
+ if (phase != SUSPEND_DISABLE && phase != SUSPEND_POWER_DOWN)
+ return 0;
+
+ ret = usb_suspend_device(hcd->self.root_hub, state);
+ if (!ret) {
+ dev->power.power_state = state;
+ INFO("%s suspended\n", hcd_name);
+ } else
+ ERR("%s suspend failed\n", hcd_name);
+
+ return ret;
+}
+
+/*
+ Resume platform device
+*/
+static int isp116x_resume(struct device *dev, u32 phase)
+{
+ int ret = 0;
+ struct usb_hcd *hcd = dev_get_drvdata(dev);
+
+ VDBG("%s: state %x, phase %x\n", __func__, dev->power.power_state,
+ phase);
+ if (phase != RESUME_POWER_ON)
+ return 0;
+
+ ret = usb_resume_device(hcd->self.root_hub);
+ if (!ret) {
+ dev->power.power_state = PMSG_ON;
+ VDBG("%s resumed\n", (char *)hcd_name);
+ }
+ return ret;
+}
+
+#else
+
+#define isp116x_suspend NULL
+#define isp116x_resume NULL
+
+#endif
+
+static struct device_driver isp116x_driver = {
+ .name = (char *)hcd_name,
+ .bus = &platform_bus_type,
+ .probe = isp116x_probe,
+ .remove = isp116x_remove,
+ .suspend = isp116x_suspend,
+ .resume = isp116x_resume,
+};
+
+/*-----------------------------------------------------------------*/
+
+static int __init isp116x_init(void)
+{
+ if (usb_disabled())
+ return -ENODEV;
+
+ INFO("driver %s, %s\n", hcd_name, DRIVER_VERSION);
+ return driver_register(&isp116x_driver);
+}
+
+module_init(isp116x_init);
+
+static void __exit isp116x_cleanup(void)
+{
+ driver_unregister(&isp116x_driver);
+}
+
+module_exit(isp116x_cleanup);
diff --git a/drivers/usb/host/isp116x.h b/drivers/usb/host/isp116x.h
new file mode 100644
index 00000000000..58873470dcf
--- /dev/null
+++ b/drivers/usb/host/isp116x.h
@@ -0,0 +1,583 @@
+/*
+ * ISP116x register declarations and HCD data structures
+ *
+ * Copyright (C) 2005 Olav Kongas <ok@artecdesign.ee>
+ * Portions:
+ * Copyright (C) 2004 Lothar Wassmann
+ * Copyright (C) 2004 Psion Teklogix
+ * Copyright (C) 2004 David Brownell
+ */
+
+/* us of 1ms frame */
+#define MAX_LOAD_LIMIT 850
+
+/* Full speed: max # of bytes to transfer for a single urb
+ at a time must be < 1024 && must be multiple of 64.
+ 832 allows transfering 4kiB within 5 frames. */
+#define MAX_TRANSFER_SIZE_FULLSPEED 832
+
+/* Low speed: there is no reason to schedule in very big
+ chunks; often the requested long transfers are for
+ string descriptors containing short strings. */
+#define MAX_TRANSFER_SIZE_LOWSPEED 64
+
+/* Bytetime (us), a rough indication of how much time it
+ would take to transfer a byte of useful data over USB */
+#define BYTE_TIME_FULLSPEED 1
+#define BYTE_TIME_LOWSPEED 20
+
+/* Buffer sizes */
+#define ISP116x_BUF_SIZE 4096
+#define ISP116x_ITL_BUFSIZE 0
+#define ISP116x_ATL_BUFSIZE ((ISP116x_BUF_SIZE) - 2*(ISP116x_ITL_BUFSIZE))
+
+#define ISP116x_WRITE_OFFSET 0x80
+
+/*------------ ISP116x registers/bits ------------*/
+#define HCREVISION 0x00
+#define HCCONTROL 0x01
+#define HCCONTROL_HCFS (3 << 6) /* host controller
+ functional state */
+#define HCCONTROL_USB_RESET (0 << 6)
+#define HCCONTROL_USB_RESUME (1 << 6)
+#define HCCONTROL_USB_OPER (2 << 6)
+#define HCCONTROL_USB_SUSPEND (3 << 6)
+#define HCCONTROL_RWC (1 << 9) /* remote wakeup connected */
+#define HCCONTROL_RWE (1 << 10) /* remote wakeup enable */
+#define HCCMDSTAT 0x02
+#define HCCMDSTAT_HCR (1 << 0) /* host controller reset */
+#define HCCMDSTAT_SOC (3 << 16) /* scheduling overrun count */
+#define HCINTSTAT 0x03
+#define HCINT_SO (1 << 0) /* scheduling overrun */
+#define HCINT_WDH (1 << 1) /* writeback of done_head */
+#define HCINT_SF (1 << 2) /* start frame */
+#define HCINT_RD (1 << 3) /* resume detect */
+#define HCINT_UE (1 << 4) /* unrecoverable error */
+#define HCINT_FNO (1 << 5) /* frame number overflow */
+#define HCINT_RHSC (1 << 6) /* root hub status change */
+#define HCINT_OC (1 << 30) /* ownership change */
+#define HCINT_MIE (1 << 31) /* master interrupt enable */
+#define HCINTENB 0x04
+#define HCINTDIS 0x05
+#define HCFMINTVL 0x0d
+#define HCFMREM 0x0e
+#define HCFMNUM 0x0f
+#define HCLSTHRESH 0x11
+#define HCRHDESCA 0x12
+#define RH_A_NDP (0x3 << 0) /* # downstream ports */
+#define RH_A_PSM (1 << 8) /* power switching mode */
+#define RH_A_NPS (1 << 9) /* no power switching */
+#define RH_A_DT (1 << 10) /* device type (mbz) */
+#define RH_A_OCPM (1 << 11) /* overcurrent protection
+ mode */
+#define RH_A_NOCP (1 << 12) /* no overcurrent protection */
+#define RH_A_POTPGT (0xff << 24) /* power on -> power good
+ time */
+#define HCRHDESCB 0x13
+#define RH_B_DR (0xffff << 0) /* device removable flags */
+#define RH_B_PPCM (0xffff << 16) /* port power control mask */
+#define HCRHSTATUS 0x14
+#define RH_HS_LPS (1 << 0) /* local power status */
+#define RH_HS_OCI (1 << 1) /* over current indicator */
+#define RH_HS_DRWE (1 << 15) /* device remote wakeup
+ enable */
+#define RH_HS_LPSC (1 << 16) /* local power status change */
+#define RH_HS_OCIC (1 << 17) /* over current indicator
+ change */
+#define RH_HS_CRWE (1 << 31) /* clear remote wakeup
+ enable */
+#define HCRHPORT1 0x15
+#define RH_PS_CCS (1 << 0) /* current connect status */
+#define RH_PS_PES (1 << 1) /* port enable status */
+#define RH_PS_PSS (1 << 2) /* port suspend status */
+#define RH_PS_POCI (1 << 3) /* port over current
+ indicator */
+#define RH_PS_PRS (1 << 4) /* port reset status */
+#define RH_PS_PPS (1 << 8) /* port power status */
+#define RH_PS_LSDA (1 << 9) /* low speed device attached */
+#define RH_PS_CSC (1 << 16) /* connect status change */
+#define RH_PS_PESC (1 << 17) /* port enable status change */
+#define RH_PS_PSSC (1 << 18) /* port suspend status
+ change */
+#define RH_PS_OCIC (1 << 19) /* over current indicator
+ change */
+#define RH_PS_PRSC (1 << 20) /* port reset status change */
+#define HCRHPORT_CLRMASK (0x1f << 16)
+#define HCRHPORT2 0x16
+#define HCHWCFG 0x20
+#define HCHWCFG_15KRSEL (1 << 12)
+#define HCHWCFG_CLKNOTSTOP (1 << 11)
+#define HCHWCFG_ANALOG_OC (1 << 10)
+#define HCHWCFG_DACK_MODE (1 << 8)
+#define HCHWCFG_EOT_POL (1 << 7)
+#define HCHWCFG_DACK_POL (1 << 6)
+#define HCHWCFG_DREQ_POL (1 << 5)
+#define HCHWCFG_DBWIDTH_MASK (0x03 << 3)
+#define HCHWCFG_DBWIDTH(n) (((n) << 3) & HCHWCFG_DBWIDTH_MASK)
+#define HCHWCFG_INT_POL (1 << 2)
+#define HCHWCFG_INT_TRIGGER (1 << 1)
+#define HCHWCFG_INT_ENABLE (1 << 0)
+#define HCDMACFG 0x21
+#define HCDMACFG_BURST_LEN_MASK (0x03 << 5)
+#define HCDMACFG_BURST_LEN(n) (((n) << 5) & HCDMACFG_BURST_LEN_MASK)
+#define HCDMACFG_BURST_LEN_1 HCDMACFG_BURST_LEN(0)
+#define HCDMACFG_BURST_LEN_4 HCDMACFG_BURST_LEN(1)
+#define HCDMACFG_BURST_LEN_8 HCDMACFG_BURST_LEN(2)
+#define HCDMACFG_DMA_ENABLE (1 << 4)
+#define HCDMACFG_BUF_TYPE_MASK (0x07 << 1)
+#define HCDMACFG_CTR_SEL (1 << 2)
+#define HCDMACFG_ITLATL_SEL (1 << 1)
+#define HCDMACFG_DMA_RW_SELECT (1 << 0)
+#define HCXFERCTR 0x22
+#define HCuPINT 0x24
+#define HCuPINT_SOF (1 << 0)
+#define HCuPINT_ATL (1 << 1)
+#define HCuPINT_AIIEOT (1 << 2)
+#define HCuPINT_OPR (1 << 4)
+#define HCuPINT_SUSP (1 << 5)
+#define HCuPINT_CLKRDY (1 << 6)
+#define HCuPINTENB 0x25
+#define HCCHIPID 0x27
+#define HCCHIPID_MASK 0xff00
+#define HCCHIPID_MAGIC 0x6100
+#define HCSCRATCH 0x28
+#define HCSWRES 0x29
+#define HCSWRES_MAGIC 0x00f6
+#define HCITLBUFLEN 0x2a
+#define HCATLBUFLEN 0x2b
+#define HCBUFSTAT 0x2c
+#define HCBUFSTAT_ITL0_FULL (1 << 0)
+#define HCBUFSTAT_ITL1_FULL (1 << 1)
+#define HCBUFSTAT_ATL_FULL (1 << 2)
+#define HCBUFSTAT_ITL0_DONE (1 << 3)
+#define HCBUFSTAT_ITL1_DONE (1 << 4)
+#define HCBUFSTAT_ATL_DONE (1 << 5)
+#define HCRDITL0LEN 0x2d
+#define HCRDITL1LEN 0x2e
+#define HCITLPORT 0x40
+#define HCATLPORT 0x41
+
+/* Philips transfer descriptor */
+struct ptd {
+ u16 count;
+#define PTD_COUNT_MSK (0x3ff << 0)
+#define PTD_TOGGLE_MSK (1 << 10)
+#define PTD_ACTIVE_MSK (1 << 11)
+#define PTD_CC_MSK (0xf << 12)
+ u16 mps;
+#define PTD_MPS_MSK (0x3ff << 0)
+#define PTD_SPD_MSK (1 << 10)
+#define PTD_LAST_MSK (1 << 11)
+#define PTD_EP_MSK (0xf << 12)
+ u16 len;
+#define PTD_LEN_MSK (0x3ff << 0)
+#define PTD_DIR_MSK (3 << 10)
+#define PTD_DIR_SETUP (0)
+#define PTD_DIR_OUT (1)
+#define PTD_DIR_IN (2)
+#define PTD_B5_5_MSK (1 << 13)
+ u16 faddr;
+#define PTD_FA_MSK (0x7f << 0)
+#define PTD_FMT_MSK (1 << 7)
+} __attribute__ ((packed, aligned(2)));
+
+/* PTD accessor macros. */
+#define PTD_GET_COUNT(p) (((p)->count & PTD_COUNT_MSK) >> 0)
+#define PTD_COUNT(v) (((v) << 0) & PTD_COUNT_MSK)
+#define PTD_GET_TOGGLE(p) (((p)->count & PTD_TOGGLE_MSK) >> 10)
+#define PTD_TOGGLE(v) (((v) << 10) & PTD_TOGGLE_MSK)
+#define PTD_GET_ACTIVE(p) (((p)->count & PTD_ACTIVE_MSK) >> 11)
+#define PTD_ACTIVE(v) (((v) << 11) & PTD_ACTIVE_MSK)
+#define PTD_GET_CC(p) (((p)->count & PTD_CC_MSK) >> 12)
+#define PTD_CC(v) (((v) << 12) & PTD_CC_MSK)
+#define PTD_GET_MPS(p) (((p)->mps & PTD_MPS_MSK) >> 0)
+#define PTD_MPS(v) (((v) << 0) & PTD_MPS_MSK)
+#define PTD_GET_SPD(p) (((p)->mps & PTD_SPD_MSK) >> 10)
+#define PTD_SPD(v) (((v) << 10) & PTD_SPD_MSK)
+#define PTD_GET_LAST(p) (((p)->mps & PTD_LAST_MSK) >> 11)
+#define PTD_LAST(v) (((v) << 11) & PTD_LAST_MSK)
+#define PTD_GET_EP(p) (((p)->mps & PTD_EP_MSK) >> 12)
+#define PTD_EP(v) (((v) << 12) & PTD_EP_MSK)
+#define PTD_GET_LEN(p) (((p)->len & PTD_LEN_MSK) >> 0)
+#define PTD_LEN(v) (((v) << 0) & PTD_LEN_MSK)
+#define PTD_GET_DIR(p) (((p)->len & PTD_DIR_MSK) >> 10)
+#define PTD_DIR(v) (((v) << 10) & PTD_DIR_MSK)
+#define PTD_GET_B5_5(p) (((p)->len & PTD_B5_5_MSK) >> 13)
+#define PTD_B5_5(v) (((v) << 13) & PTD_B5_5_MSK)
+#define PTD_GET_FA(p) (((p)->faddr & PTD_FA_MSK) >> 0)
+#define PTD_FA(v) (((v) << 0) & PTD_FA_MSK)
+#define PTD_GET_FMT(p) (((p)->faddr & PTD_FMT_MSK) >> 7)
+#define PTD_FMT(v) (((v) << 7) & PTD_FMT_MSK)
+
+/* Hardware transfer status codes -- CC from ptd->count */
+#define TD_CC_NOERROR 0x00
+#define TD_CC_CRC 0x01
+#define TD_CC_BITSTUFFING 0x02
+#define TD_CC_DATATOGGLEM 0x03
+#define TD_CC_STALL 0x04
+#define TD_DEVNOTRESP 0x05
+#define TD_PIDCHECKFAIL 0x06
+#define TD_UNEXPECTEDPID 0x07
+#define TD_DATAOVERRUN 0x08
+#define TD_DATAUNDERRUN 0x09
+ /* 0x0A, 0x0B reserved for hardware */
+#define TD_BUFFEROVERRUN 0x0C
+#define TD_BUFFERUNDERRUN 0x0D
+ /* 0x0E, 0x0F reserved for HCD */
+#define TD_NOTACCESSED 0x0F
+
+/* map PTD status codes (CC) to errno values */
+static const int cc_to_error[16] = {
+ /* No Error */ 0,
+ /* CRC Error */ -EILSEQ,
+ /* Bit Stuff */ -EPROTO,
+ /* Data Togg */ -EILSEQ,
+ /* Stall */ -EPIPE,
+ /* DevNotResp */ -ETIMEDOUT,
+ /* PIDCheck */ -EPROTO,
+ /* UnExpPID */ -EPROTO,
+ /* DataOver */ -EOVERFLOW,
+ /* DataUnder */ -EREMOTEIO,
+ /* (for hw) */ -EIO,
+ /* (for hw) */ -EIO,
+ /* BufferOver */ -ECOMM,
+ /* BuffUnder */ -ENOSR,
+ /* (for HCD) */ -EALREADY,
+ /* (for HCD) */ -EALREADY
+};
+
+/*--------------------------------------------------------------*/
+
+#define LOG2_PERIODIC_SIZE 5 /* arbitrary; this matches OHCI */
+#define PERIODIC_SIZE (1 << LOG2_PERIODIC_SIZE)
+
+struct isp116x {
+ spinlock_t lock;
+ struct work_struct rh_resume;
+
+ void __iomem *addr_reg;
+ void __iomem *data_reg;
+
+ struct isp116x_platform_data *board;
+
+ struct proc_dir_entry *pde;
+ unsigned long stat1, stat2, stat4, stat8, stat16;
+
+ /* HC registers */
+ u32 intenb; /* "OHCI" interrupts */
+ u16 irqenb; /* uP interrupts */
+
+ /* Root hub registers */
+ u32 rhdesca;
+ u32 rhdescb;
+ u32 rhstatus;
+ u32 rhport[2];
+
+ /* async schedule: control, bulk */
+ struct list_head async;
+
+ /* periodic schedule: int */
+ u16 load[PERIODIC_SIZE];
+ struct isp116x_ep *periodic[PERIODIC_SIZE];
+ unsigned periodic_count;
+ u16 fmindex;
+
+ /* Schedule for the current frame */
+ struct isp116x_ep *atl_active;
+ int atl_buflen;
+ int atl_bufshrt;
+ int atl_last_dir;
+ atomic_t atl_finishing;
+};
+
+static inline struct isp116x *hcd_to_isp116x(struct usb_hcd *hcd)
+{
+ return (struct isp116x *)(hcd->hcd_priv);
+}
+
+static inline struct usb_hcd *isp116x_to_hcd(struct isp116x *isp116x)
+{
+ return container_of((void *)isp116x, struct usb_hcd, hcd_priv);
+}
+
+struct isp116x_ep {
+ struct usb_host_endpoint *hep;
+ struct usb_device *udev;
+ struct ptd ptd;
+
+ u8 maxpacket;
+ u8 epnum;
+ u8 nextpid;
+ u16 error_count;
+ u16 length; /* of current packet */
+ unsigned char *data; /* to databuf */
+ /* queue of active EP's (the ones scheduled for the
+ current frame) */
+ struct isp116x_ep *active;
+
+ /* periodic schedule */
+ u16 period;
+ u16 branch;
+ u16 load;
+ struct isp116x_ep *next;
+
+ /* async schedule */
+ struct list_head schedule;
+};
+
+/*-------------------------------------------------------------------------*/
+
+#ifdef DEBUG
+#define DBG(stuff...) printk(KERN_DEBUG "116x: " stuff)
+#else
+#define DBG(stuff...) do{}while(0)
+#endif
+
+#ifdef VERBOSE
+# define VDBG DBG
+#else
+# define VDBG(stuff...) do{}while(0)
+#endif
+
+#define ERR(stuff...) printk(KERN_ERR "116x: " stuff)
+#define WARN(stuff...) printk(KERN_WARNING "116x: " stuff)
+#define INFO(stuff...) printk(KERN_INFO "116x: " stuff)
+
+/* ------------------------------------------------- */
+
+#if defined(USE_PLATFORM_DELAY)
+#if defined(USE_NDELAY)
+#error USE_PLATFORM_DELAY and USE_NDELAY simultaneously defined.
+#endif
+#define isp116x_delay(h,d) (h)->board->delay( \
+ isp116x_to_hcd(h)->self.controller,d)
+#define isp116x_check_platform_delay(h) ((h)->board->delay == NULL)
+#elif defined(USE_NDELAY)
+#define isp116x_delay(h,d) ndelay(d)
+#define isp116x_check_platform_delay(h) 0
+#else
+#define isp116x_delay(h,d) do{}while(0)
+#define isp116x_check_platform_delay(h) 0
+#endif
+
+#if defined(DEBUG)
+#define IRQ_TEST() BUG_ON(!irqs_disabled())
+#else
+#define IRQ_TEST() do{}while(0)
+#endif
+
+static inline void isp116x_write_addr(struct isp116x *isp116x, unsigned reg)
+{
+ IRQ_TEST();
+ writew(reg & 0xff, isp116x->addr_reg);
+ isp116x_delay(isp116x, 300);
+}
+
+static inline void isp116x_write_data16(struct isp116x *isp116x, u16 val)
+{
+ writew(val, isp116x->data_reg);
+ isp116x_delay(isp116x, 150);
+}
+
+static inline void isp116x_raw_write_data16(struct isp116x *isp116x, u16 val)
+{
+ __raw_writew(val, isp116x->data_reg);
+ isp116x_delay(isp116x, 150);
+}
+
+static inline u16 isp116x_read_data16(struct isp116x *isp116x)
+{
+ u16 val;
+
+ val = readw(isp116x->data_reg);
+ isp116x_delay(isp116x, 150);
+ return val;
+}
+
+static inline u16 isp116x_raw_read_data16(struct isp116x *isp116x)
+{
+ u16 val;
+
+ val = __raw_readw(isp116x->data_reg);
+ isp116x_delay(isp116x, 150);
+ return val;
+}
+
+static inline void isp116x_write_data32(struct isp116x *isp116x, u32 val)
+{
+ writew(val & 0xffff, isp116x->data_reg);
+ isp116x_delay(isp116x, 150);
+ writew(val >> 16, isp116x->data_reg);
+ isp116x_delay(isp116x, 150);
+}
+
+static inline u32 isp116x_read_data32(struct isp116x *isp116x)
+{
+ u32 val;
+
+ val = (u32) readw(isp116x->data_reg);
+ isp116x_delay(isp116x, 150);
+ val |= ((u32) readw(isp116x->data_reg)) << 16;
+ isp116x_delay(isp116x, 150);
+ return val;
+}
+
+/* Let's keep register access functions out of line. Hint:
+ we wait at least 150 ns at every access.
+*/
+static u16 isp116x_read_reg16(struct isp116x *isp116x, unsigned reg)
+{
+ isp116x_write_addr(isp116x, reg);
+ return isp116x_read_data16(isp116x);
+}
+
+static u32 isp116x_read_reg32(struct isp116x *isp116x, unsigned reg)
+{
+ isp116x_write_addr(isp116x, reg);
+ return isp116x_read_data32(isp116x);
+}
+
+static void isp116x_write_reg16(struct isp116x *isp116x, unsigned reg,
+ unsigned val)
+{
+ isp116x_write_addr(isp116x, reg | ISP116x_WRITE_OFFSET);
+ isp116x_write_data16(isp116x, (u16) (val & 0xffff));
+}
+
+static void isp116x_write_reg32(struct isp116x *isp116x, unsigned reg,
+ unsigned val)
+{
+ isp116x_write_addr(isp116x, reg | ISP116x_WRITE_OFFSET);
+ isp116x_write_data32(isp116x, (u32) val);
+}
+
+#define isp116x_show_reg(d,r) { \
+ if ((r) < 0x20) { \
+ DBG("%-12s[%02x]: %08x\n", #r, \
+ r, isp116x_read_reg32(d, r)); \
+ } else { \
+ DBG("%-12s[%02x]: %04x\n", #r, \
+ r, isp116x_read_reg16(d, r)); \
+ } \
+}
+
+static inline void isp116x_show_regs(struct isp116x *isp116x)
+{
+ isp116x_show_reg(isp116x, HCREVISION);
+ isp116x_show_reg(isp116x, HCCONTROL);
+ isp116x_show_reg(isp116x, HCCMDSTAT);
+ isp116x_show_reg(isp116x, HCINTSTAT);
+ isp116x_show_reg(isp116x, HCINTENB);
+ isp116x_show_reg(isp116x, HCFMINTVL);
+ isp116x_show_reg(isp116x, HCFMREM);
+ isp116x_show_reg(isp116x, HCFMNUM);
+ isp116x_show_reg(isp116x, HCLSTHRESH);
+ isp116x_show_reg(isp116x, HCRHDESCA);
+ isp116x_show_reg(isp116x, HCRHDESCB);
+ isp116x_show_reg(isp116x, HCRHSTATUS);
+ isp116x_show_reg(isp116x, HCRHPORT1);
+ isp116x_show_reg(isp116x, HCRHPORT2);
+ isp116x_show_reg(isp116x, HCHWCFG);
+ isp116x_show_reg(isp116x, HCDMACFG);
+ isp116x_show_reg(isp116x, HCXFERCTR);
+ isp116x_show_reg(isp116x, HCuPINT);
+ isp116x_show_reg(isp116x, HCuPINTENB);
+ isp116x_show_reg(isp116x, HCCHIPID);
+ isp116x_show_reg(isp116x, HCSCRATCH);
+ isp116x_show_reg(isp116x, HCITLBUFLEN);
+ isp116x_show_reg(isp116x, HCATLBUFLEN);
+ isp116x_show_reg(isp116x, HCBUFSTAT);
+ isp116x_show_reg(isp116x, HCRDITL0LEN);
+ isp116x_show_reg(isp116x, HCRDITL1LEN);
+}
+
+#if defined(URB_TRACE)
+
+#define PIPETYPE(pipe) ({ char *__s; \
+ if (usb_pipecontrol(pipe)) __s = "ctrl"; \
+ else if (usb_pipeint(pipe)) __s = "int"; \
+ else if (usb_pipebulk(pipe)) __s = "bulk"; \
+ else __s = "iso"; \
+ __s;})
+#define PIPEDIR(pipe) ({ usb_pipein(pipe) ? "in" : "out"; })
+#define URB_NOTSHORT(urb) ({ (urb)->transfer_flags & URB_SHORT_NOT_OK ? \
+ "short_not_ok" : ""; })
+
+/* print debug info about the URB */
+static void urb_dbg(struct urb *urb, char *msg)
+{
+ unsigned int pipe;
+
+ if (!urb) {
+ DBG("%s: zero urb\n", msg);
+ return;
+ }
+ pipe = urb->pipe;
+ DBG("%s: FA %d ep%d%s %s: len %d/%d %s\n", msg,
+ usb_pipedevice(pipe), usb_pipeendpoint(pipe),
+ PIPEDIR(pipe), PIPETYPE(pipe),
+ urb->transfer_buffer_length, urb->actual_length, URB_NOTSHORT(urb));
+}
+
+#else
+
+#define urb_dbg(urb,msg) do{}while(0)
+
+#endif /* ! defined(URB_TRACE) */
+
+#if defined(PTD_TRACE)
+
+#define PTD_DIR_STR(ptd) ({char __c; \
+ switch(PTD_GET_DIR(ptd)){ \
+ case 0: __c = 's'; break; \
+ case 1: __c = 'o'; break; \
+ default: __c = 'i'; break; \
+ }; __c;})
+
+/*
+ Dump PTD info. The code documents the format
+ perfectly, right :)
+*/
+static inline void dump_ptd(struct ptd *ptd)
+{
+ printk("td: %x %d%c%d %d,%d,%d %x %x%x%x\n",
+ PTD_GET_CC(ptd), PTD_GET_FA(ptd),
+ PTD_DIR_STR(ptd), PTD_GET_EP(ptd),
+ PTD_GET_COUNT(ptd), PTD_GET_LEN(ptd), PTD_GET_MPS(ptd),
+ PTD_GET_TOGGLE(ptd), PTD_GET_ACTIVE(ptd),
+ PTD_GET_SPD(ptd), PTD_GET_LAST(ptd));
+}
+
+static inline void dump_ptd_out_data(struct ptd *ptd, u8 * buf)
+{
+ int k;
+
+ if (PTD_GET_DIR(ptd) != PTD_DIR_IN && PTD_GET_LEN(ptd)) {
+ printk("-> ");
+ for (k = 0; k < PTD_GET_LEN(ptd); ++k)
+ printk("%02x ", ((u8 *) buf)[k]);
+ printk("\n");
+ }
+}
+
+static inline void dump_ptd_in_data(struct ptd *ptd, u8 * buf)
+{
+ int k;
+
+ if (PTD_GET_DIR(ptd) == PTD_DIR_IN && PTD_GET_COUNT(ptd)) {
+ printk("<- ");
+ for (k = 0; k < PTD_GET_COUNT(ptd); ++k)
+ printk("%02x ", ((u8 *) buf)[k]);
+ printk("\n");
+ }
+ if (PTD_GET_LAST(ptd))
+ printk("-\n");
+}
+
+#else
+
+#define dump_ptd(ptd) do{}while(0)
+#define dump_ptd_in_data(ptd,buf) do{}while(0)
+#define dump_ptd_out_data(ptd,buf) do{}while(0)
+
+#endif /* ! defined(PTD_TRACE) */
diff --git a/drivers/usb/host/ohci-dbg.c b/drivers/usb/host/ohci-dbg.c
index 62f53a21380..c58408c95c3 100644
--- a/drivers/usb/host/ohci-dbg.c
+++ b/drivers/usb/host/ohci-dbg.c
@@ -481,7 +481,7 @@ show_async (struct class_device *class_dev, char *buf)
size_t temp;
unsigned long flags;
- bus = to_usb_bus(class_dev);
+ bus = class_get_devdata(class_dev);
hcd = bus->hcpriv;
ohci = hcd_to_ohci(hcd);
@@ -514,7 +514,7 @@ show_periodic (struct class_device *class_dev, char *buf)
return 0;
seen_count = 0;
- bus = to_usb_bus(class_dev);
+ bus = class_get_devdata(class_dev);
hcd = bus->hcpriv;
ohci = hcd_to_ohci(hcd);
next = buf;
@@ -611,7 +611,7 @@ show_registers (struct class_device *class_dev, char *buf)
char *next;
u32 rdata;
- bus = to_usb_bus(class_dev);
+ bus = class_get_devdata(class_dev);
hcd = bus->hcpriv;
ohci = hcd_to_ohci(hcd);
regs = ohci->regs;
@@ -684,7 +684,7 @@ static CLASS_DEVICE_ATTR (registers, S_IRUGO, show_registers, NULL);
static inline void create_debug_files (struct ohci_hcd *ohci)
{
- struct class_device *cldev = &ohci_to_hcd(ohci)->self.class_dev;
+ struct class_device *cldev = ohci_to_hcd(ohci)->self.class_dev;
class_device_create_file(cldev, &class_device_attr_async);
class_device_create_file(cldev, &class_device_attr_periodic);
@@ -694,7 +694,7 @@ static inline void create_debug_files (struct ohci_hcd *ohci)
static inline void remove_debug_files (struct ohci_hcd *ohci)
{
- struct class_device *cldev = &ohci_to_hcd(ohci)->self.class_dev;
+ struct class_device *cldev = ohci_to_hcd(ohci)->self.class_dev;
class_device_remove_file(cldev, &class_device_attr_async);
class_device_remove_file(cldev, &class_device_attr_periodic);
diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c
index 1e27f10c159..68decab280d 100644
--- a/drivers/usb/host/ohci-hcd.c
+++ b/drivers/usb/host/ohci-hcd.c
@@ -95,12 +95,11 @@
#include <linux/init.h>
#include <linux/timer.h>
#include <linux/list.h>
-#include <linux/interrupt.h> /* for in_interrupt () */
#include <linux/usb.h>
#include <linux/usb_otg.h>
-#include "../core/hcd.h"
#include <linux/dma-mapping.h>
-#include <linux/dmapool.h> /* needed by ohci-mem.c when no PCI */
+#include <linux/dmapool.h>
+#include <linux/reboot.h>
#include <asm/io.h>
#include <asm/irq.h>
@@ -108,8 +107,9 @@
#include <asm/unaligned.h>
#include <asm/byteorder.h>
+#include "../core/hcd.h"
-#define DRIVER_VERSION "2004 Nov 08"
+#define DRIVER_VERSION "2005 April 22"
#define DRIVER_AUTHOR "Roman Weissgaerber, David Brownell"
#define DRIVER_DESC "USB 1.1 'Open' Host Controller (OHCI) Driver"
@@ -141,6 +141,7 @@ static const char hcd_name [] = "ohci_hcd";
static void ohci_dump (struct ohci_hcd *ohci, int verbose);
static int ohci_init (struct ohci_hcd *ohci);
static void ohci_stop (struct usb_hcd *hcd);
+static int ohci_reboot (struct notifier_block *, unsigned long , void *);
#include "ohci-hub.c"
#include "ohci-dbg.c"
@@ -179,7 +180,7 @@ static int ohci_urb_enqueue (
struct usb_hcd *hcd,
struct usb_host_endpoint *ep,
struct urb *urb,
- int mem_flags
+ unsigned mem_flags
) {
struct ohci_hcd *ohci = hcd_to_ohci (hcd);
struct ed *ed;
@@ -420,6 +421,23 @@ static void ohci_usb_reset (struct ohci_hcd *ohci)
ohci_writel (ohci, ohci->hc_control, &ohci->regs->control);
}
+/* reboot notifier forcibly disables IRQs and DMA, helping kexec and
+ * other cases where the next software may expect clean state from the
+ * "firmware". this is bus-neutral, unlike shutdown() methods.
+ */
+static int
+ohci_reboot (struct notifier_block *block, unsigned long code, void *null)
+{
+ struct ohci_hcd *ohci;
+
+ ohci = container_of (block, struct ohci_hcd, reboot_notifier);
+ ohci_writel (ohci, OHCI_INTR_MIE, &ohci->regs->intrdisable);
+ ohci_usb_reset (ohci);
+ /* flush the writes */
+ (void) ohci_readl (ohci, &ohci->regs->control);
+ return 0;
+}
+
/*-------------------------------------------------------------------------*
* HC functions
*-------------------------------------------------------------------------*/
@@ -487,13 +505,10 @@ static int ohci_init (struct ohci_hcd *ohci)
/* Start an OHCI controller, set the BUS operational
* resets USB and controller
* enable interrupts
- * connect the virtual root hub
*/
static int ohci_run (struct ohci_hcd *ohci)
{
u32 mask, temp;
- struct usb_device *udev;
- struct usb_bus *bus;
int first = ohci->fminterval == 0;
disable (ohci);
@@ -654,37 +669,15 @@ retry:
// POTPGT delay is bits 24-31, in 2 ms units.
mdelay ((temp >> 23) & 0x1fe);
- bus = &ohci_to_hcd(ohci)->self;
ohci_to_hcd(ohci)->state = HC_STATE_RUNNING;
ohci_dump (ohci, 1);
- udev = bus->root_hub;
- if (udev) {
- return 0;
- }
-
- /* connect the virtual root hub */
- udev = usb_alloc_dev (NULL, bus, 0);
- if (!udev) {
- disable (ohci);
- ohci->hc_control &= ~OHCI_CTRL_HCFS;
- ohci_writel (ohci, ohci->hc_control, &ohci->regs->control);
- return -ENOMEM;
- }
-
- udev->speed = USB_SPEED_FULL;
- if (usb_hcd_register_root_hub (udev, ohci_to_hcd(ohci)) != 0) {
- usb_put_dev (udev);
- disable (ohci);
- ohci->hc_control &= ~OHCI_CTRL_HCFS;
- ohci_writel (ohci, ohci->hc_control, &ohci->regs->control);
- return -ENODEV;
+ if (ohci_to_hcd(ohci)->self.root_hub == NULL) {
+ register_reboot_notifier (&ohci->reboot_notifier);
+ create_debug_files (ohci);
}
- if (ohci->power_budget)
- hub_set_power_budget(udev, ohci->power_budget);
- create_debug_files (ohci);
return 0;
}
@@ -781,6 +774,7 @@ static void ohci_stop (struct usb_hcd *hcd)
ohci_writel (ohci, OHCI_INTR_MIE, &ohci->regs->intrdisable);
remove_debug_files (ohci);
+ unregister_reboot_notifier (&ohci->reboot_notifier);
ohci_mem_cleanup (ohci);
if (ohci->hcca) {
dma_free_coherent (hcd->self.controller,
diff --git a/drivers/usb/host/ohci-hub.c b/drivers/usb/host/ohci-hub.c
index e2fc4129dfc..83ca4549a50 100644
--- a/drivers/usb/host/ohci-hub.c
+++ b/drivers/usb/host/ohci-hub.c
@@ -419,10 +419,11 @@ ohci_hub_descriptor (
/* two bitmaps: ports removable, and usb 1.0 legacy PortPwrCtrlMask */
rh = roothub_b (ohci);
+ memset(desc->bitmap, 0xff, sizeof(desc->bitmap));
desc->bitmap [0] = rh & RH_B_DR;
if (ports > 7) {
desc->bitmap [1] = (rh & RH_B_DR) >> 8;
- desc->bitmap [2] = desc->bitmap [3] = 0xff;
+ desc->bitmap [2] = 0xff;
} else
desc->bitmap [1] = 0xff;
}
diff --git a/drivers/usb/host/ohci-mem.c b/drivers/usb/host/ohci-mem.c
index e55682b4919..fd3c4d3714b 100644
--- a/drivers/usb/host/ohci-mem.c
+++ b/drivers/usb/host/ohci-mem.c
@@ -29,6 +29,7 @@ static void ohci_hcd_init (struct ohci_hcd *ohci)
spin_lock_init (&ohci->lock);
INIT_LIST_HEAD (&ohci->pending);
INIT_WORK (&ohci->rh_resume, ohci_rh_resume, ohci_to_hcd(ohci));
+ ohci->reboot_notifier.notifier_call = ohci_reboot;
}
/*-------------------------------------------------------------------------*/
@@ -83,7 +84,7 @@ dma_to_td (struct ohci_hcd *hc, dma_addr_t td_dma)
/* TDs ... */
static struct td *
-td_alloc (struct ohci_hcd *hc, int mem_flags)
+td_alloc (struct ohci_hcd *hc, unsigned mem_flags)
{
dma_addr_t dma;
struct td *td;
@@ -117,7 +118,7 @@ td_free (struct ohci_hcd *hc, struct td *td)
/* EDs ... */
static struct ed *
-ed_alloc (struct ohci_hcd *hc, int mem_flags)
+ed_alloc (struct ohci_hcd *hc, unsigned mem_flags)
{
dma_addr_t dma;
struct ed *ed;
diff --git a/drivers/usb/host/ohci-omap.c b/drivers/usb/host/ohci-omap.c
index 8aab5907afe..5cde76faab9 100644
--- a/drivers/usb/host/ohci-omap.c
+++ b/drivers/usb/host/ohci-omap.c
@@ -181,7 +181,7 @@ static int omap_start_hc(struct ohci_hcd *ohci, struct platform_device *pdev)
if (config->otg) {
ohci_to_hcd(ohci)->self.otg_port = config->otg;
/* default/minimum OTG power budget: 8 mA */
- ohci->power_budget = 8;
+ ohci_to_hcd(ohci)->power_budget = 8;
}
/* boards can use OTG transceivers in non-OTG modes */
@@ -230,7 +230,7 @@ static int omap_start_hc(struct ohci_hcd *ohci, struct platform_device *pdev)
/* TPS2045 switch for internal transceiver (port 1) */
if (machine_is_omap_osk()) {
- ohci->power_budget = 250;
+ ohci_to_hcd(ohci)->power_budget = 250;
rh &= ~RH_A_NOCP;
@@ -456,34 +456,22 @@ static int ohci_hcd_omap_drv_remove(struct device *dev)
#ifdef CONFIG_PM
-/* states match PCI usage, always suspending the root hub except that
- * 4 ~= D3cold (ACPI D3) with clock off (resume sees reset).
- *
- * FIXME: above comment is not right, and code is wrong, too :-(.
- */
-
-static int ohci_omap_suspend(struct device *dev, pm_message_t state, u32 level)
+static int ohci_omap_suspend(struct device *dev, pm_message_t message, u32 level)
{
struct ohci_hcd *ohci = hcd_to_ohci(dev_get_drvdata(dev));
int status = -EINVAL;
if (level != SUSPEND_POWER_DOWN)
return 0;
- if (state <= dev->power.power_state)
- return 0;
- dev_dbg(dev, "suspend to %d\n", state);
down(&ohci_to_hcd(ohci)->self.root_hub->serialize);
status = ohci_hub_suspend(ohci_to_hcd(ohci));
if (status == 0) {
- if (state >= 4) {
- omap_ohci_clock_power(0);
- ohci_to_hcd(ohci)->self.root_hub->state =
- USB_STATE_SUSPENDED;
- state = 4;
- }
+ omap_ohci_clock_power(0);
+ ohci_to_hcd(ohci)->self.root_hub->state =
+ USB_STATE_SUSPENDED;
ohci_to_hcd(ohci)->state = HC_STATE_SUSPENDED;
- dev->power.power_state = state;
+ dev->power.power_state = PMSG_SUSPEND;
}
up(&ohci_to_hcd(ohci)->self.root_hub->serialize);
return status;
@@ -497,29 +485,20 @@ static int ohci_omap_resume(struct device *dev, u32 level)
if (level != RESUME_POWER_ON)
return 0;
- switch (dev->power.power_state) {
- case 0:
- break;
- case 4:
- if (time_before(jiffies, ohci->next_statechange))
- msleep(5);
- ohci->next_statechange = jiffies;
- omap_ohci_clock_power(1);
- /* FALLTHROUGH */
- default:
- dev_dbg(dev, "resume from %d\n", dev->power.power_state);
+ if (time_before(jiffies, ohci->next_statechange))
+ msleep(5);
+ ohci->next_statechange = jiffies;
+ omap_ohci_clock_power(1);
#ifdef CONFIG_USB_SUSPEND
- /* get extra cleanup even if remote wakeup isn't in use */
- status = usb_resume_device(ohci_to_hcd(ohci)->self.root_hub);
+ /* get extra cleanup even if remote wakeup isn't in use */
+ status = usb_resume_device(ohci_to_hcd(ohci)->self.root_hub);
#else
- down(&ohci_to_hcd(ohci)->self.root_hub->serialize);
- status = ohci_hub_resume(ohci_to_hcd(ohci));
- up(&ohci_to_hcd(ohci)->self.root_hub->serialize);
+ down(&ohci_to_hcd(ohci)->self.root_hub->serialize);
+ status = ohci_hub_resume(ohci_to_hcd(ohci));
+ up(&ohci_to_hcd(ohci)->self.root_hub->serialize);
#endif
- if (status == 0)
- dev->power.power_state = 0;
- break;
- }
+ if (status == 0)
+ dev->power.power_state = PMSG_ON;
return status;
}
diff --git a/drivers/usb/host/ohci-pci.c b/drivers/usb/host/ohci-pci.c
index 57fd07d0054..eede6be098d 100644
--- a/drivers/usb/host/ohci-pci.c
+++ b/drivers/usb/host/ohci-pci.c
@@ -14,14 +14,11 @@
* This file is licenced under the GPL.
*/
-#ifdef CONFIG_PMAC_PBOOK
+#ifdef CONFIG_PPC_PMAC
#include <asm/machdep.h>
#include <asm/pmac_feature.h>
#include <asm/pci-bridge.h>
#include <asm/prom.h>
-#ifndef CONFIG_PM
-# define CONFIG_PM
-#endif
#endif
#ifndef CONFIG_PCI
@@ -132,7 +129,7 @@ static int ohci_pci_suspend (struct usb_hcd *hcd, pm_message_t message)
/* let things settle down a bit */
msleep (100);
-#ifdef CONFIG_PMAC_PBOOK
+#ifdef CONFIG_PPC_PMAC
if (_machine == _MACH_Pmac) {
struct device_node *of_node;
@@ -141,7 +138,7 @@ static int ohci_pci_suspend (struct usb_hcd *hcd, pm_message_t message)
if (of_node)
pmac_call_feature(PMAC_FTR_USB_ENABLE, of_node, 0, 0);
}
-#endif /* CONFIG_PMAC_PBOOK */
+#endif /* CONFIG_PPC_PMAC */
return 0;
}
@@ -151,7 +148,7 @@ static int ohci_pci_resume (struct usb_hcd *hcd)
struct ohci_hcd *ohci = hcd_to_ohci (hcd);
int retval = 0;
-#ifdef CONFIG_PMAC_PBOOK
+#ifdef CONFIG_PPC_PMAC
if (_machine == _MACH_Pmac) {
struct device_node *of_node;
@@ -160,7 +157,7 @@ static int ohci_pci_resume (struct usb_hcd *hcd)
if (of_node)
pmac_call_feature (PMAC_FTR_USB_ENABLE, of_node, 0, 1);
}
-#endif /* CONFIG_PMAC_PBOOK */
+#endif /* CONFIG_PPC_PMAC */
/* resume root hub */
if (time_before (jiffies, ohci->next_statechange))
diff --git a/drivers/usb/host/ohci.h b/drivers/usb/host/ohci.h
index 22e1ac138ac..71cdd226286 100644
--- a/drivers/usb/host/ohci.h
+++ b/drivers/usb/host/ohci.h
@@ -371,7 +371,6 @@ struct ohci_hcd {
* other external transceivers should be software-transparent
*/
struct otg_transceiver *transceiver;
- unsigned power_budget;
/*
* memory management for queue data structures
@@ -390,6 +389,7 @@ struct ohci_hcd {
u32 fminterval; /* saved register */
struct work_struct rh_resume;
+ struct notifier_block reboot_notifier;
unsigned long flags; /* for HC bugs */
#define OHCI_QUIRK_AMD756 0x01 /* erratum #4 */
diff --git a/drivers/usb/host/sl811-hcd.c b/drivers/usb/host/sl811-hcd.c
index 99d43f758ad..7a890a65f55 100644
--- a/drivers/usb/host/sl811-hcd.c
+++ b/drivers/usb/host/sl811-hcd.c
@@ -815,7 +815,7 @@ static int sl811h_urb_enqueue(
struct usb_hcd *hcd,
struct usb_host_endpoint *hep,
struct urb *urb,
- int mem_flags
+ unsigned mem_flags
) {
struct sl811 *sl811 = hcd_to_sl811(hcd);
struct usb_device *udev = urb->dev;
@@ -1563,29 +1563,15 @@ static int
sl811h_start(struct usb_hcd *hcd)
{
struct sl811 *sl811 = hcd_to_sl811(hcd);
- struct usb_device *udev;
/* chip has been reset, VBUS power is off */
-
- udev = usb_alloc_dev(NULL, &hcd->self, 0);
- if (!udev)
- return -ENOMEM;
-
- udev->speed = USB_SPEED_FULL;
hcd->state = HC_STATE_RUNNING;
- if (sl811->board)
+ if (sl811->board) {
hcd->can_wakeup = sl811->board->can_wakeup;
-
- if (usb_hcd_register_root_hub(udev, hcd) != 0) {
- usb_put_dev(udev);
- sl811h_stop(hcd);
- return -ENODEV;
+ hcd->power_budget = sl811->board->power * 2;
}
- if (sl811->board && sl811->board->power)
- hub_set_power_budget(udev, sl811->board->power * 2);
-
/* enable power and interupts */
port_power(sl811, 1);
diff --git a/drivers/usb/host/sl811_cs.c b/drivers/usb/host/sl811_cs.c
index 6e173265095..38aebe361ca 100644
--- a/drivers/usb/host/sl811_cs.c
+++ b/drivers/usb/host/sl811_cs.c
@@ -20,7 +20,6 @@
#include <linux/timer.h>
#include <linux/ioport.h>
-#include <pcmcia/version.h>
#include <pcmcia/cs_types.h>
#include <pcmcia/cs.h>
#include <pcmcia/cistpl.h>
@@ -68,13 +67,6 @@ static const char driver_name[DEV_NAME_LEN] = "sl811_cs";
static dev_link_t *dev_list = NULL;
-static int irq_list[4] = { -1 };
-static int irq_list_count;
-
-module_param_array(irq_list, int, &irq_list_count, 0444);
-
-INT_MODULE_PARM(irq_mask, 0xdeb8);
-
typedef struct local_info_t {
dev_link_t link;
dev_node_t node;
@@ -373,7 +365,7 @@ static dev_link_t *sl811_cs_attach(void)
local_info_t *local;
dev_link_t *link;
client_reg_t client_reg;
- int ret, i;
+ int ret;
local = kmalloc(sizeof(local_info_t), GFP_KERNEL);
if (!local)
@@ -385,11 +377,6 @@ static dev_link_t *sl811_cs_attach(void)
/* Initialize */
link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
link->irq.IRQInfo1 = IRQ_INFO2_VALID|IRQ_LEVEL_ID;
- if (irq_list[0] == -1)
- link->irq.IRQInfo2 = irq_mask;
- else
- for (i = 0; i < irq_list_count; i++)
- link->irq.IRQInfo2 |= 1 << irq_list[i];
link->irq.Handler = NULL;
link->conf.Attributes = 0;
@@ -401,11 +388,6 @@ static dev_link_t *sl811_cs_attach(void)
dev_list = link;
client_reg.dev_info = (dev_info_t *) &driver_name;
client_reg.Attributes = INFO_IO_CLIENT | INFO_CARD_SHARE;
- client_reg.EventMask =
- CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL |
- CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET |
- CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME;
- client_reg.event_handler = &sl811_cs_event;
client_reg.Version = 0x0210;
client_reg.event_callback_args.client_data = link;
ret = pcmcia_register_client(&link->handle, &client_reg);
@@ -418,13 +400,21 @@ static dev_link_t *sl811_cs_attach(void)
return link;
}
+static struct pcmcia_device_id sl811_ids[] = {
+ PCMCIA_DEVICE_MANF_CARD(0xc015, 0x0001), /* RATOC USB HOST CF+ Card */
+ PCMCIA_DEVICE_NULL,
+};
+MODULE_DEVICE_TABLE(pcmcia, sl811_ids);
+
static struct pcmcia_driver sl811_cs_driver = {
.owner = THIS_MODULE,
.drv = {
.name = (char *)driver_name,
},
.attach = sl811_cs_attach,
+ .event = sl811_cs_event,
.detach = sl811_cs_detach,
+ .id_table = sl811_ids,
};
/*====================================================================*/
diff --git a/drivers/usb/host/uhci-debug.c b/drivers/usb/host/uhci-debug.c
index 24c73c5a343..4538a98b6f9 100644
--- a/drivers/usb/host/uhci-debug.c
+++ b/drivers/usb/host/uhci-debug.c
@@ -237,6 +237,37 @@ static int uhci_show_sc(int port, unsigned short status, char *buf, int len)
return out - buf;
}
+static int uhci_show_root_hub_state(struct uhci_hcd *uhci, char *buf, int len)
+{
+ char *out = buf;
+ char *rh_state;
+
+ /* Try to make sure there's enough memory */
+ if (len < 60)
+ return 0;
+
+ switch (uhci->rh_state) {
+ case UHCI_RH_RESET:
+ rh_state = "reset"; break;
+ case UHCI_RH_SUSPENDED:
+ rh_state = "suspended"; break;
+ case UHCI_RH_AUTO_STOPPED:
+ rh_state = "auto-stopped"; break;
+ case UHCI_RH_RESUMING:
+ rh_state = "resuming"; break;
+ case UHCI_RH_SUSPENDING:
+ rh_state = "suspending"; break;
+ case UHCI_RH_RUNNING:
+ rh_state = "running"; break;
+ case UHCI_RH_RUNNING_NODEVS:
+ rh_state = "running, no devs"; break;
+ default:
+ rh_state = "?"; break;
+ }
+ out += sprintf(out, "Root-hub state: %s\n", rh_state);
+ return out - buf;
+}
+
static int uhci_show_status(struct uhci_hcd *uhci, char *buf, int len)
{
char *out = buf;
@@ -408,6 +439,7 @@ static int uhci_sprint_schedule(struct uhci_hcd *uhci, char *buf, int len)
spin_lock_irqsave(&uhci->lock, flags);
+ out += uhci_show_root_hub_state(uhci, out, len - (out - buf));
out += sprintf(out, "HC status\n");
out += uhci_show_status(uhci, out, len - (out - buf));
diff --git a/drivers/usb/host/uhci-hcd.c b/drivers/usb/host/uhci-hcd.c
index 49bd83ee0c7..0d5d2545bf0 100644
--- a/drivers/usb/host/uhci-hcd.c
+++ b/drivers/usb/host/uhci-hcd.c
@@ -13,18 +13,13 @@
* (C) Copyright 2000 Yggdrasil Computing, Inc. (port of new PCI interface
* support from usb-ohci.c by Adam Richter, adam@yggdrasil.com).
* (C) Copyright 1999 Gregory P. Smith (from usb-ohci.c)
- * (C) Copyright 2004 Alan Stern, stern@rowland.harvard.edu
+ * (C) Copyright 2004-2005 Alan Stern, stern@rowland.harvard.edu
*
* Intel documents this fairly well, and as far as I know there
* are no royalties or anything like that, but even so there are
* people who decided that they want to do the same thing in a
* completely different way.
*
- * WARNING! The USB documentation is downright evil. Most of it
- * is just crap, written by a committee. You're better off ignoring
- * most of it, the important stuff is:
- * - the low-level protocol (fairly simple but lots of small details)
- * - working around the horridness of the rest
*/
#include <linux/config.h>
@@ -64,7 +59,7 @@
/*
* Version Information
*/
-#define DRIVER_VERSION "v2.2"
+#define DRIVER_VERSION "v2.3"
#define DRIVER_AUTHOR "Linus 'Frodo Rabbit' Torvalds, Johannes Erdfelt, \
Randy Dunlap, Georg Acher, Deti Fliegl, Thomas Sailer, Roman Weissgaerber, \
Alan Stern"
@@ -89,8 +84,9 @@ static char *errbuf;
static kmem_cache_t *uhci_up_cachep; /* urb_priv */
+static void suspend_rh(struct uhci_hcd *uhci, enum uhci_rh_state new_state);
+static void wakeup_rh(struct uhci_hcd *uhci);
static void uhci_get_current_frame_number(struct uhci_hcd *uhci);
-static void hc_state_transitions(struct uhci_hcd *uhci);
/* If a transfer is still active after this much time, turn off FSBR */
#define IDLE_TIMEOUT msecs_to_jiffies(50)
@@ -101,308 +97,352 @@ static void hc_state_transitions(struct uhci_hcd *uhci);
/* to make sure it doesn't hog all of the bandwidth */
#define DEPTH_INTERVAL 5
+static inline void restart_timer(struct uhci_hcd *uhci)
+{
+ mod_timer(&uhci->stall_timer, jiffies + msecs_to_jiffies(100));
+}
+
#include "uhci-hub.c"
#include "uhci-debug.c"
#include "uhci-q.c"
-static int init_stall_timer(struct usb_hcd *hcd);
-
-static void stall_callback(unsigned long ptr)
+/*
+ * Make sure the controller is completely inactive, unable to
+ * generate interrupts or do DMA.
+ */
+static void reset_hc(struct uhci_hcd *uhci)
{
- struct usb_hcd *hcd = (struct usb_hcd *)ptr;
- struct uhci_hcd *uhci = hcd_to_uhci(hcd);
- struct urb_priv *up;
- unsigned long flags;
+ int port;
- spin_lock_irqsave(&uhci->lock, flags);
- uhci_scan_schedule(uhci, NULL);
-
- list_for_each_entry(up, &uhci->urb_list, urb_list) {
- struct urb *u = up->urb;
-
- spin_lock(&u->lock);
-
- /* Check if the FSBR timed out */
- if (up->fsbr && !up->fsbr_timeout && time_after_eq(jiffies, up->fsbrtime + IDLE_TIMEOUT))
- uhci_fsbr_timeout(uhci, u);
+ /* Turn off PIRQ enable and SMI enable. (This also turns off the
+ * BIOS's USB Legacy Support.) Turn off all the R/WC bits too.
+ */
+ pci_write_config_word(to_pci_dev(uhci_dev(uhci)), USBLEGSUP,
+ USBLEGSUP_RWC);
- spin_unlock(&u->lock);
- }
+ /* Reset the HC - this will force us to get a
+ * new notification of any already connected
+ * ports due to the virtual disconnect that it
+ * implies.
+ */
+ outw(USBCMD_HCRESET, uhci->io_addr + USBCMD);
+ mb();
+ udelay(5);
+ if (inw(uhci->io_addr + USBCMD) & USBCMD_HCRESET)
+ dev_warn(uhci_dev(uhci), "HCRESET not completed yet!\n");
- /* Really disable FSBR */
- if (!uhci->fsbr && uhci->fsbrtimeout && time_after_eq(jiffies, uhci->fsbrtimeout)) {
- uhci->fsbrtimeout = 0;
- uhci->skel_term_qh->link = UHCI_PTR_TERM;
- }
+ /* Just to be safe, disable interrupt requests and
+ * make sure the controller is stopped.
+ */
+ outw(0, uhci->io_addr + USBINTR);
+ outw(0, uhci->io_addr + USBCMD);
- /* Poll for and perform state transitions */
- hc_state_transitions(uhci);
- if (unlikely(uhci->suspended_ports && uhci->state != UHCI_SUSPENDED))
- uhci_check_ports(uhci);
+ /* HCRESET doesn't affect the Suspend, Reset, and Resume Detect
+ * bits in the port status and control registers.
+ * We have to clear them by hand.
+ */
+ for (port = 0; port < uhci->rh_numports; ++port)
+ outw(0, uhci->io_addr + USBPORTSC1 + (port * 2));
- init_stall_timer(hcd);
- spin_unlock_irqrestore(&uhci->lock, flags);
+ uhci->port_c_suspend = uhci->suspended_ports =
+ uhci->resuming_ports = 0;
+ uhci->rh_state = UHCI_RH_RESET;
+ uhci->is_stopped = UHCI_IS_STOPPED;
+ uhci_to_hcd(uhci)->state = HC_STATE_HALT;
+ uhci_to_hcd(uhci)->poll_rh = 0;
}
-static int init_stall_timer(struct usb_hcd *hcd)
+/*
+ * Last rites for a defunct/nonfunctional controller
+ * or one we don't want to use any more.
+ */
+static void hc_died(struct uhci_hcd *uhci)
{
- struct uhci_hcd *uhci = hcd_to_uhci(hcd);
-
- init_timer(&uhci->stall_timer);
- uhci->stall_timer.function = stall_callback;
- uhci->stall_timer.data = (unsigned long)hcd;
- uhci->stall_timer.expires = jiffies + msecs_to_jiffies(100);
- add_timer(&uhci->stall_timer);
-
- return 0;
+ reset_hc(uhci);
+ uhci->hc_inaccessible = 1;
+ del_timer(&uhci->stall_timer);
}
-static irqreturn_t uhci_irq(struct usb_hcd *hcd, struct pt_regs *regs)
+/*
+ * Initialize a controller that was newly discovered or has just been
+ * resumed. In either case we can't be sure of its previous state.
+ */
+static void check_and_reset_hc(struct uhci_hcd *uhci)
{
- struct uhci_hcd *uhci = hcd_to_uhci(hcd);
- unsigned long io_addr = uhci->io_addr;
- unsigned short status;
+ u16 legsup;
+ unsigned int cmd, intr;
/*
- * Read the interrupt status, and write it back to clear the
- * interrupt cause. Contrary to the UHCI specification, the
- * "HC Halted" status bit is persistent: it is RO, not R/WC.
+ * When restarting a suspended controller, we expect all the
+ * settings to be the same as we left them:
+ *
+ * PIRQ and SMI disabled, no R/W bits set in USBLEGSUP;
+ * Controller is stopped and configured with EGSM set;
+ * No interrupts enabled except possibly Resume Detect.
+ *
+ * If any of these conditions are violated we do a complete reset.
*/
- status = inw(io_addr + USBSTS);
- if (!(status & ~USBSTS_HCH)) /* shared interrupt, not mine */
- return IRQ_NONE;
- outw(status, io_addr + USBSTS); /* Clear it */
-
- if (status & ~(USBSTS_USBINT | USBSTS_ERROR | USBSTS_RD)) {
- if (status & USBSTS_HSE)
- dev_err(uhci_dev(uhci), "host system error, "
- "PCI problems?\n");
- if (status & USBSTS_HCPE)
- dev_err(uhci_dev(uhci), "host controller process "
- "error, something bad happened!\n");
- if ((status & USBSTS_HCH) && uhci->state > 0) {
- dev_err(uhci_dev(uhci), "host controller halted, "
- "very bad!\n");
- /* FIXME: Reset the controller, fix the offending TD */
- }
+ pci_read_config_word(to_pci_dev(uhci_dev(uhci)), USBLEGSUP, &legsup);
+ if (legsup & ~(USBLEGSUP_RO | USBLEGSUP_RWC)) {
+ dev_dbg(uhci_dev(uhci), "%s: legsup = 0x%04x\n",
+ __FUNCTION__, legsup);
+ goto reset_needed;
}
- if (status & USBSTS_RD)
- uhci->resume_detect = 1;
+ cmd = inw(uhci->io_addr + USBCMD);
+ if ((cmd & USBCMD_RS) || !(cmd & USBCMD_CF) || !(cmd & USBCMD_EGSM)) {
+ dev_dbg(uhci_dev(uhci), "%s: cmd = 0x%04x\n",
+ __FUNCTION__, cmd);
+ goto reset_needed;
+ }
- spin_lock(&uhci->lock);
- uhci_scan_schedule(uhci, regs);
- spin_unlock(&uhci->lock);
+ intr = inw(uhci->io_addr + USBINTR);
+ if (intr & (~USBINTR_RESUME)) {
+ dev_dbg(uhci_dev(uhci), "%s: intr = 0x%04x\n",
+ __FUNCTION__, intr);
+ goto reset_needed;
+ }
+ return;
- return IRQ_HANDLED;
+reset_needed:
+ dev_dbg(uhci_dev(uhci), "Performing full reset\n");
+ reset_hc(uhci);
}
-static void reset_hc(struct uhci_hcd *uhci)
+/*
+ * Store the basic register settings needed by the controller.
+ */
+static void configure_hc(struct uhci_hcd *uhci)
{
- unsigned long io_addr = uhci->io_addr;
+ /* Set the frame length to the default: 1 ms exactly */
+ outb(USBSOF_DEFAULT, uhci->io_addr + USBSOF);
- /* Turn off PIRQ, SMI, and all interrupts. This also turns off
- * the BIOS's USB Legacy Support.
- */
- pci_write_config_word(to_pci_dev(uhci_dev(uhci)), USBLEGSUP, 0);
- outw(0, uhci->io_addr + USBINTR);
+ /* Store the frame list base address */
+ outl(uhci->fl->dma_handle, uhci->io_addr + USBFLBASEADD);
- /* Global reset for 50ms */
- uhci->state = UHCI_RESET;
- outw(USBCMD_GRESET, io_addr + USBCMD);
- msleep(50);
- outw(0, io_addr + USBCMD);
+ /* Set the current frame number */
+ outw(uhci->frame_number, uhci->io_addr + USBFRNUM);
- /* Another 10ms delay */
- msleep(10);
- uhci->resume_detect = 0;
- uhci->is_stopped = UHCI_IS_STOPPED;
+ /* Mark controller as running before we enable interrupts */
+ uhci_to_hcd(uhci)->state = HC_STATE_RUNNING;
+ mb();
+
+ /* Enable PIRQ */
+ pci_write_config_word(to_pci_dev(uhci_dev(uhci)), USBLEGSUP,
+ USBLEGSUP_DEFAULT);
}
-static void suspend_hc(struct uhci_hcd *uhci)
+
+static int resume_detect_interrupts_are_broken(struct uhci_hcd *uhci)
{
- unsigned long io_addr = uhci->io_addr;
+ int port;
- dev_dbg(uhci_dev(uhci), "%s\n", __FUNCTION__);
- uhci->state = UHCI_SUSPENDED;
- uhci->resume_detect = 0;
- outw(USBCMD_EGSM, io_addr + USBCMD);
+ switch (to_pci_dev(uhci_dev(uhci))->vendor) {
+ default:
+ break;
- /* FIXME: Wait for the controller to actually stop */
- uhci_get_current_frame_number(uhci);
- uhci->is_stopped = UHCI_IS_STOPPED;
+ case PCI_VENDOR_ID_GENESYS:
+ /* Genesys Logic's GL880S controllers don't generate
+ * resume-detect interrupts.
+ */
+ return 1;
- uhci_scan_schedule(uhci, NULL);
+ case PCI_VENDOR_ID_INTEL:
+ /* Some of Intel's USB controllers have a bug that causes
+ * resume-detect interrupts if any port has an over-current
+ * condition. To make matters worse, some motherboards
+ * hardwire unused USB ports' over-current inputs active!
+ * To prevent problems, we will not enable resume-detect
+ * interrupts if any ports are OC.
+ */
+ for (port = 0; port < uhci->rh_numports; ++port) {
+ if (inw(uhci->io_addr + USBPORTSC1 + port * 2) &
+ USBPORTSC_OC)
+ return 1;
+ }
+ break;
+ }
+ return 0;
}
-static void wakeup_hc(struct uhci_hcd *uhci)
+static void suspend_rh(struct uhci_hcd *uhci, enum uhci_rh_state new_state)
+__releases(uhci->lock)
+__acquires(uhci->lock)
{
- unsigned long io_addr = uhci->io_addr;
+ int auto_stop;
+ int int_enable;
- switch (uhci->state) {
- case UHCI_SUSPENDED: /* Start the resume */
- dev_dbg(uhci_dev(uhci), "%s\n", __FUNCTION__);
-
- /* Global resume for >= 20ms */
- outw(USBCMD_FGR | USBCMD_EGSM, io_addr + USBCMD);
- uhci->state = UHCI_RESUMING_1;
- uhci->state_end = jiffies + msecs_to_jiffies(20);
- uhci->is_stopped = 0;
- break;
+ auto_stop = (new_state == UHCI_RH_AUTO_STOPPED);
+ dev_dbg(uhci_dev(uhci), "%s%s\n", __FUNCTION__,
+ (auto_stop ? " (auto-stop)" : ""));
- case UHCI_RESUMING_1: /* End global resume */
- uhci->state = UHCI_RESUMING_2;
- outw(0, io_addr + USBCMD);
- /* Falls through */
-
- case UHCI_RESUMING_2: /* Wait for EOP to be sent */
- if (inw(io_addr + USBCMD) & USBCMD_FGR)
- break;
-
- /* Run for at least 1 second, and
- * mark it configured with a 64-byte max packet */
- uhci->state = UHCI_RUNNING_GRACE;
- uhci->state_end = jiffies + HZ;
- outw(USBCMD_RS | USBCMD_CF | USBCMD_MAXP,
- io_addr + USBCMD);
- break;
+ /* If we get a suspend request when we're already auto-stopped
+ * then there's nothing to do.
+ */
+ if (uhci->rh_state == UHCI_RH_AUTO_STOPPED) {
+ uhci->rh_state = new_state;
+ return;
+ }
- case UHCI_RUNNING_GRACE: /* Now allowed to suspend */
- uhci->state = UHCI_RUNNING;
- break;
+ /* Enable resume-detect interrupts if they work.
+ * Then enter Global Suspend mode, still configured.
+ */
+ int_enable = (resume_detect_interrupts_are_broken(uhci) ?
+ 0 : USBINTR_RESUME);
+ outw(int_enable, uhci->io_addr + USBINTR);
+ outw(USBCMD_EGSM | USBCMD_CF, uhci->io_addr + USBCMD);
+ mb();
+ udelay(5);
- default:
- break;
+ /* If we're auto-stopping then no devices have been attached
+ * for a while, so there shouldn't be any active URBs and the
+ * controller should stop after a few microseconds. Otherwise
+ * we will give the controller one frame to stop.
+ */
+ if (!auto_stop && !(inw(uhci->io_addr + USBSTS) & USBSTS_HCH)) {
+ uhci->rh_state = UHCI_RH_SUSPENDING;
+ spin_unlock_irq(&uhci->lock);
+ msleep(1);
+ spin_lock_irq(&uhci->lock);
+ if (uhci->hc_inaccessible) /* Died */
+ return;
}
-}
+ if (!(inw(uhci->io_addr + USBSTS) & USBSTS_HCH))
+ dev_warn(uhci_dev(uhci), "Controller not stopped yet!\n");
-static int ports_active(struct uhci_hcd *uhci)
-{
- unsigned long io_addr = uhci->io_addr;
- int connection = 0;
- int i;
+ uhci_get_current_frame_number(uhci);
+ smp_wmb();
- for (i = 0; i < uhci->rh_numports; i++)
- connection |= (inw(io_addr + USBPORTSC1 + i * 2) & USBPORTSC_CCS);
+ uhci->rh_state = new_state;
+ uhci->is_stopped = UHCI_IS_STOPPED;
+ del_timer(&uhci->stall_timer);
+ uhci_to_hcd(uhci)->poll_rh = !int_enable;
- return connection;
+ uhci_scan_schedule(uhci, NULL);
}
-static int suspend_allowed(struct uhci_hcd *uhci)
+static void start_rh(struct uhci_hcd *uhci)
{
- unsigned long io_addr = uhci->io_addr;
- int i;
-
- if (to_pci_dev(uhci_dev(uhci))->vendor != PCI_VENDOR_ID_INTEL)
- return 1;
+ uhci->is_stopped = 0;
+ smp_wmb();
- /* Some of Intel's USB controllers have a bug that causes false
- * resume indications if any port has an over current condition.
- * To prevent problems, we will not allow a global suspend if
- * any ports are OC.
- *
- * Some motherboards using Intel's chipsets (but not using all
- * the USB ports) appear to hardwire the over current inputs active
- * to disable the USB ports.
+ /* Mark it configured and running with a 64-byte max packet.
+ * All interrupts are enabled, even though RESUME won't do anything.
*/
-
- /* check for over current condition on any port */
- for (i = 0; i < uhci->rh_numports; i++) {
- if (inw(io_addr + USBPORTSC1 + i * 2) & USBPORTSC_OC)
- return 0;
- }
-
- return 1;
+ outw(USBCMD_RS | USBCMD_CF | USBCMD_MAXP, uhci->io_addr + USBCMD);
+ outw(USBINTR_TIMEOUT | USBINTR_RESUME | USBINTR_IOC | USBINTR_SP,
+ uhci->io_addr + USBINTR);
+ mb();
+ uhci->rh_state = UHCI_RH_RUNNING;
+ uhci_to_hcd(uhci)->poll_rh = 1;
+ restart_timer(uhci);
}
-static void hc_state_transitions(struct uhci_hcd *uhci)
+static void wakeup_rh(struct uhci_hcd *uhci)
+__releases(uhci->lock)
+__acquires(uhci->lock)
{
- switch (uhci->state) {
- case UHCI_RUNNING:
+ dev_dbg(uhci_dev(uhci), "%s%s\n", __FUNCTION__,
+ uhci->rh_state == UHCI_RH_AUTO_STOPPED ?
+ " (auto-start)" : "");
- /* global suspend if nothing connected for 1 second */
- if (!ports_active(uhci) && suspend_allowed(uhci)) {
- uhci->state = UHCI_SUSPENDING_GRACE;
- uhci->state_end = jiffies + HZ;
- }
- break;
-
- case UHCI_SUSPENDING_GRACE:
- if (ports_active(uhci))
- uhci->state = UHCI_RUNNING;
- else if (time_after_eq(jiffies, uhci->state_end))
- suspend_hc(uhci);
- break;
-
- case UHCI_SUSPENDED:
-
- /* wakeup if requested by a device */
- if (uhci->resume_detect)
- wakeup_hc(uhci);
- break;
+ /* If we are auto-stopped then no devices are attached so there's
+ * no need for wakeup signals. Otherwise we send Global Resume
+ * for 20 ms.
+ */
+ if (uhci->rh_state == UHCI_RH_SUSPENDED) {
+ uhci->rh_state = UHCI_RH_RESUMING;
+ outw(USBCMD_FGR | USBCMD_EGSM | USBCMD_CF,
+ uhci->io_addr + USBCMD);
+ spin_unlock_irq(&uhci->lock);
+ msleep(20);
+ spin_lock_irq(&uhci->lock);
+ if (uhci->hc_inaccessible) /* Died */
+ return;
+
+ /* End Global Resume and wait for EOP to be sent */
+ outw(USBCMD_CF, uhci->io_addr + USBCMD);
+ mb();
+ udelay(4);
+ if (inw(uhci->io_addr + USBCMD) & USBCMD_FGR)
+ dev_warn(uhci_dev(uhci), "FGR not stopped yet!\n");
+ }
- case UHCI_RESUMING_1:
- case UHCI_RESUMING_2:
- case UHCI_RUNNING_GRACE:
- if (time_after_eq(jiffies, uhci->state_end))
- wakeup_hc(uhci);
- break;
+ start_rh(uhci);
- default:
- break;
- }
+ /* Restart root hub polling */
+ mod_timer(&uhci_to_hcd(uhci)->rh_timer, jiffies);
}
-/*
- * Store the current frame number in uhci->frame_number if the controller
- * is runnning
- */
-static void uhci_get_current_frame_number(struct uhci_hcd *uhci)
+static void stall_callback(unsigned long _uhci)
{
+ struct uhci_hcd *uhci = (struct uhci_hcd *) _uhci;
+ unsigned long flags;
+
+ spin_lock_irqsave(&uhci->lock, flags);
+ uhci_scan_schedule(uhci, NULL);
+ check_fsbr(uhci);
+
if (!uhci->is_stopped)
- uhci->frame_number = inw(uhci->io_addr + USBFRNUM);
+ restart_timer(uhci);
+ spin_unlock_irqrestore(&uhci->lock, flags);
}
-static int start_hc(struct uhci_hcd *uhci)
+static irqreturn_t uhci_irq(struct usb_hcd *hcd, struct pt_regs *regs)
{
- unsigned long io_addr = uhci->io_addr;
- int timeout = 10;
+ struct uhci_hcd *uhci = hcd_to_uhci(hcd);
+ unsigned short status;
+ unsigned long flags;
/*
- * Reset the HC - this will force us to get a
- * new notification of any already connected
- * ports due to the virtual disconnect that it
- * implies.
+ * Read the interrupt status, and write it back to clear the
+ * interrupt cause. Contrary to the UHCI specification, the
+ * "HC Halted" status bit is persistent: it is RO, not R/WC.
*/
- outw(USBCMD_HCRESET, io_addr + USBCMD);
- while (inw(io_addr + USBCMD) & USBCMD_HCRESET) {
- if (--timeout < 0) {
- dev_err(uhci_dev(uhci), "USBCMD_HCRESET timed out!\n");
- return -ETIMEDOUT;
+ status = inw(uhci->io_addr + USBSTS);
+ if (!(status & ~USBSTS_HCH)) /* shared interrupt, not mine */
+ return IRQ_NONE;
+ outw(status, uhci->io_addr + USBSTS); /* Clear it */
+
+ if (status & ~(USBSTS_USBINT | USBSTS_ERROR | USBSTS_RD)) {
+ if (status & USBSTS_HSE)
+ dev_err(uhci_dev(uhci), "host system error, "
+ "PCI problems?\n");
+ if (status & USBSTS_HCPE)
+ dev_err(uhci_dev(uhci), "host controller process "
+ "error, something bad happened!\n");
+ if (status & USBSTS_HCH) {
+ spin_lock_irqsave(&uhci->lock, flags);
+ if (uhci->rh_state >= UHCI_RH_RUNNING) {
+ dev_err(uhci_dev(uhci),
+ "host controller halted, "
+ "very bad!\n");
+ hc_died(uhci);
+ spin_unlock_irqrestore(&uhci->lock, flags);
+ return IRQ_HANDLED;
+ }
+ spin_unlock_irqrestore(&uhci->lock, flags);
}
- msleep(1);
}
- /* Mark controller as running before we enable interrupts */
- uhci_to_hcd(uhci)->state = HC_STATE_RUNNING;
-
- /* Turn on PIRQ and all interrupts */
- pci_write_config_word(to_pci_dev(uhci_dev(uhci)), USBLEGSUP,
- USBLEGSUP_DEFAULT);
- outw(USBINTR_TIMEOUT | USBINTR_RESUME | USBINTR_IOC | USBINTR_SP,
- io_addr + USBINTR);
+ if (status & USBSTS_RD)
+ usb_hcd_poll_rh_status(hcd);
- /* Start at frame 0 */
- outw(0, io_addr + USBFRNUM);
- outl(uhci->fl->dma_handle, io_addr + USBFLBASEADD);
+ spin_lock_irqsave(&uhci->lock, flags);
+ uhci_scan_schedule(uhci, regs);
+ spin_unlock_irqrestore(&uhci->lock, flags);
- /* Run and mark it configured with a 64-byte max packet */
- uhci->state = UHCI_RUNNING_GRACE;
- uhci->state_end = jiffies + HZ;
- outw(USBCMD_RS | USBCMD_CF | USBCMD_MAXP, io_addr + USBCMD);
- uhci->is_stopped = 0;
+ return IRQ_HANDLED;
+}
- return 0;
+/*
+ * Store the current frame number in uhci->frame_number if the controller
+ * is runnning
+ */
+static void uhci_get_current_frame_number(struct uhci_hcd *uhci)
+{
+ if (!uhci->is_stopped)
+ uhci->frame_number = inw(uhci->io_addr + USBFRNUM);
}
/*
@@ -448,16 +488,58 @@ static void release_uhci(struct uhci_hcd *uhci)
static int uhci_reset(struct usb_hcd *hcd)
{
struct uhci_hcd *uhci = hcd_to_uhci(hcd);
+ unsigned io_size = (unsigned) hcd->rsrc_len;
+ int port;
uhci->io_addr = (unsigned long) hcd->rsrc_start;
- /* Kick BIOS off this hardware and reset, so we won't get
- * interrupts from any previous setup.
+ /* The UHCI spec says devices must have 2 ports, and goes on to say
+ * they may have more but gives no way to determine how many there
+ * are. However according to the UHCI spec, Bit 7 of the port
+ * status and control register is always set to 1. So we try to
+ * use this to our advantage. Another common failure mode when
+ * a nonexistent register is addressed is to return all ones, so
+ * we test for that also.
*/
- reset_hc(uhci);
+ for (port = 0; port < (io_size - USBPORTSC1) / 2; port++) {
+ unsigned int portstatus;
+
+ portstatus = inw(uhci->io_addr + USBPORTSC1 + (port * 2));
+ if (!(portstatus & 0x0080) || portstatus == 0xffff)
+ break;
+ }
+ if (debug)
+ dev_info(uhci_dev(uhci), "detected %d ports\n", port);
+
+ /* Anything greater than 7 is weird so we'll ignore it. */
+ if (port > UHCI_RH_MAXCHILD) {
+ dev_info(uhci_dev(uhci), "port count misdetected? "
+ "forcing to 2 ports\n");
+ port = 2;
+ }
+ uhci->rh_numports = port;
+
+ /* Kick BIOS off this hardware and reset if the controller
+ * isn't already safely quiescent.
+ */
+ check_and_reset_hc(uhci);
return 0;
}
+/* Make sure the controller is quiescent and that we're not using it
+ * any more. This is mainly for the benefit of programs which, like kexec,
+ * expect the hardware to be idle: not doing DMA or generating IRQs.
+ *
+ * This routine may be called in a damaged or failing kernel. Hence we
+ * do not acquire the spinlock before shutting down the controller.
+ */
+static void uhci_shutdown(struct pci_dev *pdev)
+{
+ struct usb_hcd *hcd = (struct usb_hcd *) pci_get_drvdata(pdev);
+
+ hc_died(hcd_to_uhci(hcd));
+}
+
/*
* Allocate a frame list, and then setup the skeleton
*
@@ -478,17 +560,20 @@ static int uhci_start(struct usb_hcd *hcd)
{
struct uhci_hcd *uhci = hcd_to_uhci(hcd);
int retval = -EBUSY;
- int i, port;
- unsigned io_size;
+ int i;
dma_addr_t dma_handle;
- struct usb_device *udev;
struct dentry *dentry;
- io_size = (unsigned) hcd->rsrc_len;
+ hcd->uses_new_polling = 1;
+ if (pci_find_capability(to_pci_dev(uhci_dev(uhci)), PCI_CAP_ID_PM))
+ hcd->can_wakeup = 1; /* Assume it supports PME# */
- dentry = debugfs_create_file(hcd->self.bus_name, S_IFREG|S_IRUGO|S_IWUSR, uhci_debugfs_root, uhci, &uhci_debug_operations);
+ dentry = debugfs_create_file(hcd->self.bus_name,
+ S_IFREG|S_IRUGO|S_IWUSR, uhci_debugfs_root, uhci,
+ &uhci_debug_operations);
if (!dentry) {
- dev_err(uhci_dev(uhci), "couldn't create uhci debugfs entry\n");
+ dev_err(uhci_dev(uhci),
+ "couldn't create uhci debugfs entry\n");
retval = -ENOMEM;
goto err_create_debug_entry;
}
@@ -510,6 +595,10 @@ static int uhci_start(struct usb_hcd *hcd)
init_waitqueue_head(&uhci->waitqh);
+ init_timer(&uhci->stall_timer);
+ uhci->stall_timer.function = stall_callback;
+ uhci->stall_timer.data = (unsigned long) uhci;
+
uhci->fl = dma_alloc_coherent(uhci_dev(uhci), sizeof(*uhci->fl),
&dma_handle, 0);
if (!uhci->fl) {
@@ -536,46 +625,14 @@ static int uhci_start(struct usb_hcd *hcd)
goto err_create_qh_pool;
}
- /* Initialize the root hub */
-
- /* UHCI specs says devices must have 2 ports, but goes on to say */
- /* they may have more but give no way to determine how many they */
- /* have. However, according to the UHCI spec, Bit 7 is always set */
- /* to 1. So we try to use this to our advantage */
- for (port = 0; port < (io_size - 0x10) / 2; port++) {
- unsigned int portstatus;
-
- portstatus = inw(uhci->io_addr + 0x10 + (port * 2));
- if (!(portstatus & 0x0080))
- break;
- }
- if (debug)
- dev_info(uhci_dev(uhci), "detected %d ports\n", port);
-
- /* This is experimental so anything less than 2 or greater than 8 is */
- /* something weird and we'll ignore it */
- if (port < 2 || port > UHCI_RH_MAXCHILD) {
- dev_info(uhci_dev(uhci), "port count misdetected? "
- "forcing to 2 ports\n");
- port = 2;
- }
-
- uhci->rh_numports = port;
-
- udev = usb_alloc_dev(NULL, &hcd->self, 0);
- if (!udev) {
- dev_err(uhci_dev(uhci), "unable to allocate root hub\n");
- goto err_alloc_root_hub;
- }
-
- uhci->term_td = uhci_alloc_td(uhci, udev);
+ uhci->term_td = uhci_alloc_td(uhci);
if (!uhci->term_td) {
dev_err(uhci_dev(uhci), "unable to allocate terminating TD\n");
goto err_alloc_term_td;
}
for (i = 0; i < UHCI_NUM_SKELQH; i++) {
- uhci->skelqh[i] = uhci_alloc_qh(uhci, udev);
+ uhci->skelqh[i] = uhci_alloc_qh(uhci);
if (!uhci->skelqh[i]) {
dev_err(uhci_dev(uhci), "unable to allocate QH\n");
goto err_alloc_skelqh;
@@ -641,32 +698,17 @@ static int uhci_start(struct usb_hcd *hcd)
/*
* Some architectures require a full mb() to enforce completion of
- * the memory writes above before the I/O transfers in start_hc().
+ * the memory writes above before the I/O transfers in configure_hc().
*/
mb();
- if ((retval = start_hc(uhci)) != 0)
- goto err_alloc_skelqh;
-
- init_stall_timer(hcd);
-
- udev->speed = USB_SPEED_FULL;
-
- if (usb_hcd_register_root_hub(udev, hcd) != 0) {
- dev_err(uhci_dev(uhci), "unable to start root hub\n");
- retval = -ENOMEM;
- goto err_start_root_hub;
- }
+ configure_hc(uhci);
+ start_rh(uhci);
return 0;
/*
* error exits:
*/
-err_start_root_hub:
- reset_hc(uhci);
-
- del_timer_sync(&uhci->stall_timer);
-
err_alloc_skelqh:
for (i = 0; i < UHCI_NUM_SKELQH; i++)
if (uhci->skelqh[i]) {
@@ -678,9 +720,6 @@ err_alloc_skelqh:
uhci->term_td = NULL;
err_alloc_term_td:
- usb_put_dev(udev);
-
-err_alloc_root_hub:
dma_pool_destroy(uhci->qh_pool);
uhci->qh_pool = NULL;
@@ -705,73 +744,114 @@ static void uhci_stop(struct usb_hcd *hcd)
{
struct uhci_hcd *uhci = hcd_to_uhci(hcd);
- del_timer_sync(&uhci->stall_timer);
- reset_hc(uhci);
-
spin_lock_irq(&uhci->lock);
+ reset_hc(uhci);
uhci_scan_schedule(uhci, NULL);
spin_unlock_irq(&uhci->lock);
-
+
+ del_timer_sync(&uhci->stall_timer);
release_uhci(uhci);
}
#ifdef CONFIG_PM
+static int uhci_rh_suspend(struct usb_hcd *hcd)
+{
+ struct uhci_hcd *uhci = hcd_to_uhci(hcd);
+
+ spin_lock_irq(&uhci->lock);
+ if (!uhci->hc_inaccessible) /* Not dead */
+ suspend_rh(uhci, UHCI_RH_SUSPENDED);
+ spin_unlock_irq(&uhci->lock);
+ return 0;
+}
+
+static int uhci_rh_resume(struct usb_hcd *hcd)
+{
+ struct uhci_hcd *uhci = hcd_to_uhci(hcd);
+ int rc = 0;
+
+ spin_lock_irq(&uhci->lock);
+ if (uhci->hc_inaccessible) {
+ if (uhci->rh_state == UHCI_RH_SUSPENDED) {
+ dev_warn(uhci_dev(uhci), "HC isn't running!\n");
+ rc = -ENODEV;
+ }
+ /* Otherwise the HC is dead */
+ } else
+ wakeup_rh(uhci);
+ spin_unlock_irq(&uhci->lock);
+ return rc;
+}
+
static int uhci_suspend(struct usb_hcd *hcd, pm_message_t message)
{
struct uhci_hcd *uhci = hcd_to_uhci(hcd);
+ int rc = 0;
+
+ dev_dbg(uhci_dev(uhci), "%s\n", __FUNCTION__);
spin_lock_irq(&uhci->lock);
+ if (uhci->hc_inaccessible) /* Dead or already suspended */
+ goto done;
- /* Don't try to suspend broken motherboards, reset instead */
- if (suspend_allowed(uhci))
- suspend_hc(uhci);
- else {
- spin_unlock_irq(&uhci->lock);
- reset_hc(uhci);
- spin_lock_irq(&uhci->lock);
- uhci_scan_schedule(uhci, NULL);
- }
+#ifndef CONFIG_USB_SUSPEND
+ /* Otherwise this would never happen */
+ suspend_rh(uhci, UHCI_RH_SUSPENDED);
+#endif
+
+ if (uhci->rh_state > UHCI_RH_SUSPENDED) {
+ dev_warn(uhci_dev(uhci), "Root hub isn't suspended!\n");
+ hcd->state = HC_STATE_RUNNING;
+ rc = -EBUSY;
+ goto done;
+ };
+ /* All PCI host controllers are required to disable IRQ generation
+ * at the source, so we must turn off PIRQ.
+ */
+ pci_write_config_word(to_pci_dev(uhci_dev(uhci)), USBLEGSUP, 0);
+ uhci->hc_inaccessible = 1;
+
+ /* FIXME: Enable non-PME# remote wakeup? */
+
+done:
spin_unlock_irq(&uhci->lock);
- return 0;
+ if (rc == 0)
+ del_timer_sync(&hcd->rh_timer);
+ return rc;
}
static int uhci_resume(struct usb_hcd *hcd)
{
struct uhci_hcd *uhci = hcd_to_uhci(hcd);
- int rc;
- pci_set_master(to_pci_dev(uhci_dev(uhci)));
+ dev_dbg(uhci_dev(uhci), "%s\n", __FUNCTION__);
+ if (uhci->rh_state == UHCI_RH_RESET) /* Dead */
+ return 0;
spin_lock_irq(&uhci->lock);
- if (uhci->state == UHCI_SUSPENDED) {
+ /* FIXME: Disable non-PME# remote wakeup? */
- /*
- * Some systems don't maintain the UHCI register values
- * during a PM suspend/resume cycle, so reinitialize
- * the Frame Number, Framelist Base Address, Interrupt
- * Enable, and Legacy Support registers.
- */
- pci_write_config_word(to_pci_dev(uhci_dev(uhci)), USBLEGSUP,
- 0);
- outw(uhci->frame_number, uhci->io_addr + USBFRNUM);
- outl(uhci->fl->dma_handle, uhci->io_addr + USBFLBASEADD);
- outw(USBINTR_TIMEOUT | USBINTR_RESUME | USBINTR_IOC |
- USBINTR_SP, uhci->io_addr + USBINTR);
- uhci->resume_detect = 1;
- pci_write_config_word(to_pci_dev(uhci_dev(uhci)), USBLEGSUP,
- USBLEGSUP_DEFAULT);
- } else {
- spin_unlock_irq(&uhci->lock);
- reset_hc(uhci);
- if ((rc = start_hc(uhci)) != 0)
- return rc;
- spin_lock_irq(&uhci->lock);
- }
- hcd->state = HC_STATE_RUNNING;
+ uhci->hc_inaccessible = 0;
+
+ /* The BIOS may have changed the controller settings during a
+ * system wakeup. Check it and reconfigure to avoid problems.
+ */
+ check_and_reset_hc(uhci);
+ configure_hc(uhci);
+
+#ifndef CONFIG_USB_SUSPEND
+ /* Otherwise this would never happen */
+ wakeup_rh(uhci);
+#endif
+ if (uhci->rh_state == UHCI_RH_RESET)
+ suspend_rh(uhci, UHCI_RH_SUSPENDED);
spin_unlock_irq(&uhci->lock);
+
+ if (hcd->poll_rh)
+ usb_hcd_poll_rh_status(hcd);
return 0;
}
#endif
@@ -788,13 +868,15 @@ static void uhci_hcd_endpoint_disable(struct usb_hcd *hcd,
static int uhci_hcd_get_frame_number(struct usb_hcd *hcd)
{
struct uhci_hcd *uhci = hcd_to_uhci(hcd);
- int frame_number;
unsigned long flags;
+ int is_stopped;
+ int frame_number;
/* Minimize latency by avoiding the spinlock */
local_irq_save(flags);
- rmb();
- frame_number = (uhci->is_stopped ? uhci->frame_number :
+ is_stopped = uhci->is_stopped;
+ smp_rmb();
+ frame_number = (is_stopped ? uhci->frame_number :
inw(uhci->io_addr + USBFRNUM));
local_irq_restore(flags);
return frame_number;
@@ -817,6 +899,8 @@ static const struct hc_driver uhci_driver = {
#ifdef CONFIG_PM
.suspend = uhci_suspend,
.resume = uhci_resume,
+ .hub_suspend = uhci_rh_suspend,
+ .hub_resume = uhci_rh_resume,
#endif
.stop = uhci_stop,
@@ -845,6 +929,7 @@ static struct pci_driver uhci_pci_driver = {
.probe = usb_hcd_pci_probe,
.remove = usb_hcd_pci_remove,
+ .shutdown = uhci_shutdown,
#ifdef CONFIG_PM
.suspend = usb_hcd_pci_suspend,
diff --git a/drivers/usb/host/uhci-hcd.h b/drivers/usb/host/uhci-hcd.h
index 02255d69e1f..bf9c5f9b508 100644
--- a/drivers/usb/host/uhci-hcd.h
+++ b/drivers/usb/host/uhci-hcd.h
@@ -41,6 +41,7 @@
#define USBFRNUM 6
#define USBFLBASEADD 8
#define USBSOF 12
+#define USBSOF_DEFAULT 64 /* Frame length is exactly 1 ms */
/* USB port status and control registers */
#define USBPORTSC1 16
@@ -66,6 +67,8 @@
/* Legacy support register */
#define USBLEGSUP 0xc0
#define USBLEGSUP_DEFAULT 0x2000 /* only PIRQ enable set */
+#define USBLEGSUP_RWC 0x8f00 /* the R/WC bits */
+#define USBLEGSUP_RO 0x5040 /* R/O and reserved bits */
#define UHCI_NULL_DATA_SIZE 0x7FF /* for UHCI controller TD */
@@ -111,7 +114,6 @@ struct uhci_qh {
/* Software fields */
dma_addr_t dma_handle;
- struct usb_device *dev;
struct urb_priv *urbp;
struct list_head list; /* P: uhci->frame_list_lock */
@@ -203,7 +205,6 @@ struct uhci_td {
/* Software fields */
dma_addr_t dma_handle;
- struct usb_device *dev;
struct urb *urb;
struct list_head list; /* P: urb->lock */
@@ -314,26 +315,32 @@ static inline int __interval_to_skel(int interval)
}
/*
- * Device states for the host controller.
+ * States for the root hub.
*
* To prevent "bouncing" in the presence of electrical noise,
- * we insist on a 1-second "grace" period, before switching to
- * the RUNNING or SUSPENDED states, during which the state is
- * not allowed to change.
- *
- * The resume process is divided into substates in order to avoid
- * potentially length delays during the timer handler.
- *
- * States in which the host controller is halted must have values <= 0.
+ * when there are no devices attached we delay for 1 second in the
+ * RUNNING_NODEVS state before switching to the AUTO_STOPPED state.
+ *
+ * (Note that the AUTO_STOPPED state won't be necessary once the hub
+ * driver learns to autosuspend.)
*/
-enum uhci_state {
- UHCI_RESET,
- UHCI_RUNNING_GRACE, /* Before RUNNING */
- UHCI_RUNNING, /* The normal state */
- UHCI_SUSPENDING_GRACE, /* Before SUSPENDED */
- UHCI_SUSPENDED = -10, /* When no devices are attached */
- UHCI_RESUMING_1,
- UHCI_RESUMING_2
+enum uhci_rh_state {
+ /* In the following states the HC must be halted.
+ * These two must come first */
+ UHCI_RH_RESET,
+ UHCI_RH_SUSPENDED,
+
+ UHCI_RH_AUTO_STOPPED,
+ UHCI_RH_RESUMING,
+
+ /* In this state the HC changes from running to halted,
+ * so it can legally appear either way. */
+ UHCI_RH_SUSPENDING,
+
+ /* In the following states it's an error if the HC is halted.
+ * These two must come last */
+ UHCI_RH_RUNNING, /* The normal state */
+ UHCI_RH_RUNNING_NODEVS, /* Running with no devices attached */
};
/*
@@ -363,15 +370,16 @@ struct uhci_hcd {
int fsbr; /* Full-speed bandwidth reclamation */
unsigned long fsbrtimeout; /* FSBR delay */
- enum uhci_state state; /* FIXME: needs a spinlock */
- unsigned long state_end; /* Time of next transition */
+ enum uhci_rh_state rh_state;
+ unsigned long auto_stop_time; /* When to AUTO_STOP */
+
unsigned int frame_number; /* As of last check */
unsigned int is_stopped;
#define UHCI_IS_STOPPED 9999 /* Larger than a frame # */
unsigned int scan_in_progress:1; /* Schedule scan is running */
unsigned int need_rescan:1; /* Redo the schedule scan */
- unsigned int resume_detect:1; /* Need a Global Resume */
+ unsigned int hc_inaccessible:1; /* HC is suspended or dead */
/* Support for port suspend/resume/reset */
unsigned long port_c_suspend; /* Bit-arrays of ports */
@@ -451,4 +459,11 @@ struct urb_priv {
* #2 urb->lock
*/
+
+/* Some special IDs */
+
+#define PCI_VENDOR_ID_GENESYS 0x17a0
+#define PCI_DEVICE_ID_GL880S_UHCI 0x8083
+#define PCI_DEVICE_ID_GL880S_EHCI 0x8084
+
#endif
diff --git a/drivers/usb/host/uhci-hub.c b/drivers/usb/host/uhci-hub.c
index 4c45ba8390f..4eace2b19dd 100644
--- a/drivers/usb/host/uhci-hub.c
+++ b/drivers/usb/host/uhci-hub.c
@@ -33,9 +33,24 @@ static __u8 root_hub_hub_des[] =
/* status change bits: nonzero writes will clear */
#define RWC_BITS (USBPORTSC_OCC | USBPORTSC_PEC | USBPORTSC_CSC)
-static int uhci_hub_status_data(struct usb_hcd *hcd, char *buf)
+/* A port that either is connected or has a changed-bit set will prevent
+ * us from AUTO_STOPPING.
+ */
+static int any_ports_active(struct uhci_hcd *uhci)
+{
+ int port;
+
+ for (port = 0; port < uhci->rh_numports; ++port) {
+ if ((inw(uhci->io_addr + USBPORTSC1 + port * 2) &
+ (USBPORTSC_CCS | RWC_BITS)) ||
+ test_bit(port, &uhci->port_c_suspend))
+ return 1;
+ }
+ return 0;
+}
+
+static inline int get_hub_status_data(struct uhci_hcd *uhci, char *buf)
{
- struct uhci_hcd *uhci = hcd_to_uhci(hcd);
int port;
*buf = 0;
@@ -44,8 +59,6 @@ static int uhci_hub_status_data(struct usb_hcd *hcd, char *buf)
test_bit(port, &uhci->port_c_suspend))
*buf |= (1 << (port + 1));
}
- if (*buf && uhci->state == UHCI_SUSPENDED)
- uhci->resume_detect = 1;
return !!*buf;
}
@@ -115,6 +128,11 @@ static void uhci_check_ports(struct uhci_hcd *uhci)
set_bit(port, &uhci->resuming_ports);
uhci->ports_timeout = jiffies +
msecs_to_jiffies(20);
+
+ /* Make sure we see the port again
+ * after the resuming period is over. */
+ mod_timer(&uhci_to_hcd(uhci)->rh_timer,
+ uhci->ports_timeout);
} else if (time_after_eq(jiffies,
uhci->ports_timeout)) {
uhci_finish_suspend(uhci, port, port_addr);
@@ -123,6 +141,60 @@ static void uhci_check_ports(struct uhci_hcd *uhci)
}
}
+static int uhci_hub_status_data(struct usb_hcd *hcd, char *buf)
+{
+ struct uhci_hcd *uhci = hcd_to_uhci(hcd);
+ unsigned long flags;
+ int status;
+
+ spin_lock_irqsave(&uhci->lock, flags);
+ if (uhci->hc_inaccessible) {
+ status = 0;
+ goto done;
+ }
+
+ uhci_check_ports(uhci);
+ status = get_hub_status_data(uhci, buf);
+
+ switch (uhci->rh_state) {
+ case UHCI_RH_SUSPENDING:
+ case UHCI_RH_SUSPENDED:
+ /* if port change, ask to be resumed */
+ if (status)
+ usb_hcd_resume_root_hub(hcd);
+ break;
+
+ case UHCI_RH_AUTO_STOPPED:
+ /* if port change, auto start */
+ if (status)
+ wakeup_rh(uhci);
+ break;
+
+ case UHCI_RH_RUNNING:
+ /* are any devices attached? */
+ if (!any_ports_active(uhci)) {
+ uhci->rh_state = UHCI_RH_RUNNING_NODEVS;
+ uhci->auto_stop_time = jiffies + HZ;
+ }
+ break;
+
+ case UHCI_RH_RUNNING_NODEVS:
+ /* auto-stop if nothing connected for 1 second */
+ if (any_ports_active(uhci))
+ uhci->rh_state = UHCI_RH_RUNNING;
+ else if (time_after_eq(jiffies, uhci->auto_stop_time))
+ suspend_rh(uhci, UHCI_RH_AUTO_STOPPED);
+ break;
+
+ default:
+ break;
+ }
+
+done:
+ spin_unlock_irqrestore(&uhci->lock, flags);
+ return status;
+}
+
/* size of returned buffer is part of USB spec */
static int uhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
u16 wIndex, char *buf, u16 wLength)
@@ -134,6 +206,9 @@ static int uhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
u16 wPortChange, wPortStatus;
unsigned long flags;
+ if (uhci->hc_inaccessible)
+ return -ETIMEDOUT;
+
spin_lock_irqsave(&uhci->lock, flags);
switch (typeReq) {
diff --git a/drivers/usb/host/uhci-q.c b/drivers/usb/host/uhci-q.c
index 2a7c19501f2..bbb36cd6ed6 100644
--- a/drivers/usb/host/uhci-q.c
+++ b/drivers/usb/host/uhci-q.c
@@ -32,6 +32,8 @@ static void uhci_free_pending_tds(struct uhci_hcd *uhci);
*/
static inline void uhci_set_next_interrupt(struct uhci_hcd *uhci)
{
+ if (uhci->is_stopped)
+ mod_timer(&uhci->stall_timer, jiffies);
uhci->term_td->status |= cpu_to_le32(TD_CTRL_IOC);
}
@@ -46,7 +48,7 @@ static inline void uhci_moveto_complete(struct uhci_hcd *uhci,
list_move_tail(&urbp->urb_list, &uhci->complete_list);
}
-static struct uhci_td *uhci_alloc_td(struct uhci_hcd *uhci, struct usb_device *dev)
+static struct uhci_td *uhci_alloc_td(struct uhci_hcd *uhci)
{
dma_addr_t dma_handle;
struct uhci_td *td;
@@ -61,14 +63,11 @@ static struct uhci_td *uhci_alloc_td(struct uhci_hcd *uhci, struct usb_device *d
td->buffer = 0;
td->frame = -1;
- td->dev = dev;
INIT_LIST_HEAD(&td->list);
INIT_LIST_HEAD(&td->remove_list);
INIT_LIST_HEAD(&td->fl_list);
- usb_get_dev(dev);
-
return td;
}
@@ -168,13 +167,10 @@ static void uhci_free_td(struct uhci_hcd *uhci, struct uhci_td *td)
if (!list_empty(&td->fl_list))
dev_warn(uhci_dev(uhci), "td %p still in fl_list!\n", td);
- if (td->dev)
- usb_put_dev(td->dev);
-
dma_pool_free(uhci->td_pool, td, td->dma_handle);
}
-static struct uhci_qh *uhci_alloc_qh(struct uhci_hcd *uhci, struct usb_device *dev)
+static struct uhci_qh *uhci_alloc_qh(struct uhci_hcd *uhci)
{
dma_addr_t dma_handle;
struct uhci_qh *qh;
@@ -188,14 +184,11 @@ static struct uhci_qh *uhci_alloc_qh(struct uhci_hcd *uhci, struct usb_device *d
qh->element = UHCI_PTR_TERM;
qh->link = UHCI_PTR_TERM;
- qh->dev = dev;
qh->urbp = NULL;
INIT_LIST_HEAD(&qh->list);
INIT_LIST_HEAD(&qh->remove_list);
- usb_get_dev(dev);
-
return qh;
}
@@ -206,9 +199,6 @@ static void uhci_free_qh(struct uhci_hcd *uhci, struct uhci_qh *qh)
if (!list_empty(&qh->remove_list))
dev_warn(uhci_dev(uhci), "qh %p still in remove_list!\n", qh);
- if (qh->dev)
- usb_put_dev(qh->dev);
-
dma_pool_free(uhci->qh_pool, qh, qh->dma_handle);
}
@@ -597,7 +587,7 @@ static int uhci_submit_control(struct uhci_hcd *uhci, struct urb *urb, struct ur
/*
* Build the TD for the control request setup packet
*/
- td = uhci_alloc_td(uhci, urb->dev);
+ td = uhci_alloc_td(uhci);
if (!td)
return -ENOMEM;
@@ -626,7 +616,7 @@ static int uhci_submit_control(struct uhci_hcd *uhci, struct urb *urb, struct ur
if (pktsze > maxsze)
pktsze = maxsze;
- td = uhci_alloc_td(uhci, urb->dev);
+ td = uhci_alloc_td(uhci);
if (!td)
return -ENOMEM;
@@ -644,7 +634,7 @@ static int uhci_submit_control(struct uhci_hcd *uhci, struct urb *urb, struct ur
/*
* Build the final TD for control status
*/
- td = uhci_alloc_td(uhci, urb->dev);
+ td = uhci_alloc_td(uhci);
if (!td)
return -ENOMEM;
@@ -666,7 +656,7 @@ static int uhci_submit_control(struct uhci_hcd *uhci, struct urb *urb, struct ur
uhci_fill_td(td, status | TD_CTRL_IOC,
destination | uhci_explen(UHCI_NULL_DATA_SIZE), 0);
- qh = uhci_alloc_qh(uhci, urb->dev);
+ qh = uhci_alloc_qh(uhci);
if (!qh)
return -ENOMEM;
@@ -865,7 +855,7 @@ static int uhci_submit_common(struct uhci_hcd *uhci, struct urb *urb, struct urb
status &= ~TD_CTRL_SPD;
}
- td = uhci_alloc_td(uhci, urb->dev);
+ td = uhci_alloc_td(uhci);
if (!td)
return -ENOMEM;
@@ -891,7 +881,7 @@ static int uhci_submit_common(struct uhci_hcd *uhci, struct urb *urb, struct urb
*/
if (usb_pipeout(urb->pipe) && (urb->transfer_flags & URB_ZERO_PACKET) &&
!len && urb->transfer_buffer_length) {
- td = uhci_alloc_td(uhci, urb->dev);
+ td = uhci_alloc_td(uhci);
if (!td)
return -ENOMEM;
@@ -913,7 +903,7 @@ static int uhci_submit_common(struct uhci_hcd *uhci, struct urb *urb, struct urb
* flag setting. */
td->status |= cpu_to_le32(TD_CTRL_IOC);
- qh = uhci_alloc_qh(uhci, urb->dev);
+ qh = uhci_alloc_qh(uhci);
if (!qh)
return -ENOMEM;
@@ -1096,7 +1086,7 @@ static int uhci_submit_isochronous(struct uhci_hcd *uhci, struct urb *urb)
if (!urb->iso_frame_desc[i].length)
continue;
- td = uhci_alloc_td(uhci, urb->dev);
+ td = uhci_alloc_td(uhci);
if (!td)
return -ENOMEM;
@@ -1174,7 +1164,7 @@ static struct urb *uhci_find_urb_ep(struct uhci_hcd *uhci, struct urb *urb)
static int uhci_urb_enqueue(struct usb_hcd *hcd,
struct usb_host_endpoint *ep,
- struct urb *urb, int mem_flags)
+ struct urb *urb, unsigned mem_flags)
{
int ret;
struct uhci_hcd *uhci = hcd_to_uhci(hcd);
@@ -1497,6 +1487,7 @@ static void uhci_scan_schedule(struct uhci_hcd *uhci, struct pt_regs *regs)
rescan:
uhci->need_rescan = 0;
+ uhci_clear_next_interrupt(uhci);
uhci_get_current_frame_number(uhci);
if (uhci->frame_number + uhci->is_stopped != uhci->qh_remove_age)
@@ -1537,3 +1528,26 @@ static void uhci_scan_schedule(struct uhci_hcd *uhci, struct pt_regs *regs)
/* Wake up anyone waiting for an URB to complete */
wake_up_all(&uhci->waitqh);
}
+
+static void check_fsbr(struct uhci_hcd *uhci)
+{
+ struct urb_priv *up;
+
+ list_for_each_entry(up, &uhci->urb_list, urb_list) {
+ struct urb *u = up->urb;
+
+ spin_lock(&u->lock);
+
+ /* Check if the FSBR timed out */
+ if (up->fsbr && !up->fsbr_timeout && time_after_eq(jiffies, up->fsbrtime + IDLE_TIMEOUT))
+ uhci_fsbr_timeout(uhci, u);
+
+ spin_unlock(&u->lock);
+ }
+
+ /* Really disable FSBR */
+ if (!uhci->fsbr && uhci->fsbrtimeout && time_after_eq(jiffies, uhci->fsbrtimeout)) {
+ uhci->fsbrtimeout = 0;
+ uhci->skel_term_qh->link = UHCI_PTR_TERM;
+ }
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-01 05:50:08 +0000