#include "pci_regs.h" // PCI_BASE_ADDRESS_4
#include "usb.h" // struct usb_s
#include "farptr.h" // GET_FLATPTR
-#include "biosvar.h" // GET_GLOBAL
-#include "usb-hub.h" // struct usbhub_s
struct usb_uhci_s {
struct usb_s usb;
* Root hub
****************************************************************/
-static void
-init_uhci_port(void *data)
+// Check if device attached to a given port
+static int
+uhci_hub_detect(struct usbhub_s *hub, u32 port)
{
- struct usbhub_s *hub = data;
- u32 port = hub->port; // XXX - find better way to pass port
struct usb_uhci_s *cntl = container_of(hub->cntl, struct usb_uhci_s, usb);
u16 ioport = cntl->iobase + USBPORTSC1 + port * 2;
u16 status = inw(ioport);
if (!(status & USBPORTSC_CCS))
// No device
- goto done;
+ return -1;
// XXX - if just powered up, need to wait for USB_TIME_ATTDB?
- // Reset port
+ // Begin reset on port
outw(USBPORTSC_PR, ioport);
msleep(USB_TIME_DRSTR);
- mutex_lock(&cntl->usb.resetlock);
+ return 0;
+}
+
+// Reset device on port
+static int
+uhci_hub_reset(struct usbhub_s *hub, u32 port)
+{
+ struct usb_uhci_s *cntl = container_of(hub->cntl, struct usb_uhci_s, usb);
+ u16 ioport = cntl->iobase + USBPORTSC1 + port * 2;
+
+ // Finish reset on port
outw(0, ioport);
udelay(6); // 64 high-speed bit times
- status = inw(ioport);
+ u16 status = inw(ioport);
if (!(status & USBPORTSC_CCS))
// No longer connected
- goto resetfail;
+ return -1;
outw(USBPORTSC_PE, ioport);
- struct usb_pipe *pipe = usb_set_address(
- &cntl->usb, !!(status & USBPORTSC_LSDA));
- if (!pipe)
- goto resetfail;
- mutex_unlock(&cntl->usb.resetlock);
-
- // Configure port
- int count = configure_usb_device(pipe);
- free_pipe(pipe);
- if (! count)
- // Disable port
- outw(0, ioport);
- hub->devcount += count;
-done:
- hub->threads--;
- return;
-
-resetfail:
+ return !!(status & USBPORTSC_LSDA);
+}
+
+// Disable port
+static void
+uhci_hub_disconnect(struct usbhub_s *hub, u32 port)
+{
+ struct usb_uhci_s *cntl = container_of(hub->cntl, struct usb_uhci_s, usb);
+ u16 ioport = cntl->iobase + USBPORTSC1 + port * 2;
outw(0, ioport);
- mutex_unlock(&cntl->usb.resetlock);
- goto done;
}
+static struct usbhub_op_s uhci_HubOp = {
+ .detect = uhci_hub_detect,
+ .reset = uhci_hub_reset,
+ .disconnect = uhci_hub_disconnect,
+};
+
// Find any devices connected to the root hub.
static int
check_uhci_ports(struct usb_uhci_s *cntl)
struct usbhub_s hub;
memset(&hub, 0, sizeof(hub));
hub.cntl = &cntl->usb;
- hub.threads = 2;
-
- // Launch a thread for every port.
- run_thread(init_uhci_port, &hub);
- hub.port = 1;
- run_thread(init_uhci_port, &hub);
-
- // Wait for threads to complete.
- while (hub.threads)
- yield();
-
+ hub.portcount = 2;
+ hub.op = &uhci_HubOp;
+ usb_enumerate(&hub);
return hub.devcount;
}
free(fl);
free(intr_qh);
free(term_qh);
+ free(cntl);
}
void
-uhci_init(u16 bdf, int busid)
+uhci_init(struct pci_device *pci, int busid)
{
if (! CONFIG_USB_UHCI)
return;
+ u16 bdf = pci->bdf;
struct usb_uhci_s *cntl = malloc_tmphigh(sizeof(*cntl));
+ if (!cntl) {
+ warn_noalloc();
+ return;
+ }
memset(cntl, 0, sizeof(*cntl));
cntl->usb.busid = busid;
+ cntl->usb.pci = pci;
cntl->usb.type = USB_TYPE_UHCI;
cntl->iobase = (pci_config_readl(bdf, PCI_BASE_ADDRESS_4)
& PCI_BASE_ADDRESS_IO_MASK);
- dprintf(3, "UHCI init on dev %02x:%02x.%x (io=%x)\n"
+ dprintf(1, "UHCI init on dev %02x:%02x.%x (io=%x)\n"
, pci_bdf_to_bus(bdf), pci_bdf_to_dev(bdf)
, pci_bdf_to_fn(bdf), cntl->iobase);
* End point communication
****************************************************************/
-static int
-wait_qh(struct usb_uhci_s *cntl, struct uhci_qh *qh)
-{
- // XXX - 500ms just a guess
- u64 end = calc_future_tsc(500);
- for (;;) {
- if (qh->element & UHCI_PTR_TERM)
- return 0;
- if (check_time(end)) {
- warn_timeout();
- struct uhci_td *td = (void*)(qh->element & ~UHCI_PTR_BITS);
- dprintf(1, "Timeout on wait_qh %p (td=%p s=%x c=%x/%x)\n"
- , qh, td, td->status
- , inw(cntl->iobase + USBCMD)
- , inw(cntl->iobase + USBSTS));
- return -1;
- }
- yield();
- }
-}
+struct uhci_pipe {
+ struct uhci_qh qh;
+ struct uhci_td *next_td;
+ struct usb_pipe pipe;
+ u16 iobase;
+ u8 toggle;
+};
// Wait for next USB frame to start - for ensuring safe memory release.
static void
for (;;) {
if (inw(iobase + USBFRNUM) != startframe)
break;
- if (check_time(end)) {
+ if (check_tsc(end)) {
warn_timeout();
return;
}
}
}
-struct uhci_pipe {
- struct uhci_qh qh;
- struct uhci_td *next_td;
- struct usb_pipe pipe;
- u16 iobase;
-};
+static int
+wait_pipe(struct uhci_pipe *pipe, int timeout)
+{
+ u64 end = calc_future_tsc(timeout);
+ for (;;) {
+ u32 el_link = GET_FLATPTR(pipe->qh.element);
+ if (el_link & UHCI_PTR_TERM)
+ return 0;
+ if (check_tsc(end)) {
+ warn_timeout();
+ u16 iobase = GET_FLATPTR(pipe->iobase);
+ struct uhci_td *td = (void*)(el_link & ~UHCI_PTR_BITS);
+ dprintf(1, "Timeout on wait_pipe %p (td=%p s=%x c=%x/%x)\n"
+ , pipe, (void*)el_link, GET_FLATPTR(td->status)
+ , inw(iobase + USBCMD)
+ , inw(iobase + USBSTS));
+ SET_FLATPTR(pipe->qh.element, UHCI_PTR_TERM);
+ uhci_waittick(iobase);
+ return -1;
+ }
+ yield();
+ }
+}
void
uhci_free_pipe(struct usb_pipe *p)
return NULL;
}
memset(pipe, 0, sizeof(*pipe));
+ memcpy(&pipe->pipe, dummy, sizeof(pipe->pipe));
pipe->qh.element = UHCI_PTR_TERM;
pipe->iobase = cntl->iobase;
- memcpy(&pipe->pipe, dummy, sizeof(pipe->pipe));
// Add queue head to controller list.
struct uhci_qh *control_qh = cntl->control_qh;
return -1;
dprintf(5, "uhci_control %p\n", p);
struct uhci_pipe *pipe = container_of(p, struct uhci_pipe, pipe);
- struct usb_uhci_s *cntl = container_of(
- pipe->pipe.cntl, struct usb_uhci_s, usb);
int maxpacket = pipe->pipe.maxpacket;
- int lowspeed = pipe->pipe.lowspeed;
+ int lowspeed = pipe->pipe.speed;
int devaddr = pipe->pipe.devaddr | (pipe->pipe.ep << 7);
// Setup transfer descriptors
int count = 2 + DIV_ROUND_UP(datasize, maxpacket);
struct uhci_td *tds = malloc_tmphigh(sizeof(*tds) * count);
+ if (!tds) {
+ warn_noalloc();
+ return -1;
+ }
tds[0].link = (u32)&tds[1] | UHCI_PTR_DEPTH;
tds[0].status = (uhci_maxerr(3) | (lowspeed ? TD_CTRL_LS : 0)
// Transfer data
barrier();
pipe->qh.element = (u32)&tds[0];
- int ret = wait_qh(cntl, &pipe->qh);
- if (ret) {
- pipe->qh.element = UHCI_PTR_TERM;
- uhci_waittick(pipe->iobase);
- }
+ int ret = wait_pipe(pipe, 500);
free(tds);
return ret;
}
return NULL;
}
memset(pipe, 0, sizeof(*pipe));
+ memcpy(&pipe->pipe, dummy, sizeof(pipe->pipe));
pipe->qh.element = UHCI_PTR_TERM;
pipe->iobase = cntl->iobase;
- memcpy(&pipe->pipe, dummy, sizeof(pipe->pipe));
// Add queue head to controller list.
struct uhci_qh *bulk_qh = cntl->bulk_qh;
status = td->status;
if (!(status & TD_CTRL_ACTIVE))
break;
- if (check_time(end)) {
+ if (check_tsc(end)) {
warn_timeout();
return -1;
}
int
uhci_send_bulk(struct usb_pipe *p, int dir, void *data, int datasize)
{
+ if (! CONFIG_USB_UHCI)
+ return -1;
struct uhci_pipe *pipe = container_of(p, struct uhci_pipe, pipe);
dprintf(7, "uhci_send_bulk qh=%p dir=%d data=%p size=%d\n"
, &pipe->qh, dir, data, datasize);
int maxpacket = GET_FLATPTR(pipe->pipe.maxpacket);
- int lowspeed = GET_FLATPTR(pipe->pipe.lowspeed);
+ int lowspeed = GET_FLATPTR(pipe->pipe.speed);
int devaddr = (GET_FLATPTR(pipe->pipe.devaddr)
| (GET_FLATPTR(pipe->pipe.ep) << 7));
- int toggle = GET_FLATPTR(pipe->pipe.toggle) ? TD_TOKEN_TOGGLE : 0;
+ int toggle = GET_FLATPTR(pipe->toggle) ? TD_TOKEN_TOGGLE : 0;
// Allocate 4 tds on stack (16byte aligned)
u8 tdsbuf[sizeof(struct uhci_td) * STACKTDS + TDALIGN - 1];
memset(tds, 0, sizeof(*tds) * STACKTDS);
// Enable tds
+ barrier();
SET_FLATPTR(pipe->qh.element, (u32)MAKE_FLATPTR(GET_SEG(SS), tds));
int tdpos = 0;
data += transfer;
datasize -= transfer;
}
- int i;
- for (i=0; i<STACKTDS; i++) {
- struct uhci_td *td = &tds[tdpos++ % STACKTDS];
- int ret = wait_td(td);
- if (ret)
- goto fail;
- }
-
- SET_FLATPTR(pipe->pipe.toggle, !!toggle);
- return 0;
+ SET_FLATPTR(pipe->toggle, !!toggle);
+ return wait_pipe(pipe, 5000);
fail:
dprintf(1, "uhci_send_bulk failed\n");
SET_FLATPTR(pipe->qh.element, UHCI_PTR_TERM);
if (frameexp > 10)
frameexp = 10;
int maxpacket = dummy->maxpacket;
- int lowspeed = dummy->lowspeed;
+ int lowspeed = dummy->speed;
int devaddr = dummy->devaddr | (dummy->ep << 7);
// Determine number of entries needed for 2 timer ticks.
int ms = 1<<frameexp;
int count = DIV_ROUND_UP(PIT_TICK_INTERVAL * 1000 * 2, PIT_TICK_RATE * ms);
+ count = ALIGN(count, 2);
struct uhci_pipe *pipe = malloc_low(sizeof(*pipe));
struct uhci_td *tds = malloc_low(sizeof(*tds) * count);
- if (!pipe || !tds) {
+ void *data = malloc_low(maxpacket * count);
+ if (!pipe || !tds || !data) {
warn_noalloc();
goto fail;
}
- if (maxpacket > sizeof(tds[0].data))
- goto fail;
memset(pipe, 0, sizeof(*pipe));
+ memcpy(&pipe->pipe, dummy, sizeof(pipe->pipe));
pipe->qh.element = (u32)tds;
pipe->next_td = &tds[0];
pipe->iobase = cntl->iobase;
- memcpy(&pipe->pipe, dummy, sizeof(pipe->pipe));
int toggle = 0;
int i;
tds[i].token = (uhci_explen(maxpacket) | toggle
| (devaddr << TD_TOKEN_DEVADDR_SHIFT)
| USB_PID_IN);
- tds[i].buffer = &tds[i].data;
+ tds[i].buffer = data + maxpacket * i;
toggle ^= TD_TOKEN_TOGGLE;
}
fail:
free(pipe);
free(tds);
+ free(data);
return NULL;
}
// XXX - check for errors.
// Copy data.
+ void *tddata = GET_FLATPTR(td->buffer);
memcpy_far(GET_SEG(SS), data
- , FLATPTR_TO_SEG(td->data), (void*)FLATPTR_TO_OFFSET(td->data)
+ , FLATPTR_TO_SEG(tddata), (void*)FLATPTR_TO_OFFSET(tddata)
, uhci_expected_length(token));
// Reenable this td.
- u32 next = GET_FLATPTR(td->link);
+ struct uhci_td *next = (void*)(GET_FLATPTR(td->link) & ~UHCI_PTR_BITS);
+ SET_FLATPTR(pipe->next_td, next);
barrier();
SET_FLATPTR(td->status, (uhci_maxerr(0) | (status & TD_CTRL_LS)
| TD_CTRL_ACTIVE));
- SET_FLATPTR(pipe->next_td, (void*)(next & ~UHCI_PTR_BITS));
return 0;
}
projects / seabios.git / blobdiff