#include "pci_regs.h" // PCI_BASE_ADDRESS_0
#include "usb.h" // struct usb_s
#include "farptr.h" // GET_FLATPTR
-#include "usb-hub.h" // struct usbhub_s
#include "usb-uhci.h" // init_uhci
#include "usb-ohci.h" // init_ohci
-struct companion_s {
- u16 bdf;
- u16 type;
-};
-
struct usb_ehci_s {
struct usb_s usb;
struct ehci_caps *caps;
struct ehci_regs *regs;
struct ehci_qh *async_qh;
- struct companion_s companion[8];
+ struct pci_device *companion[8];
int checkports;
int legacycount;
};
#define EHCI_TIME_POSTPOWER 20
#define EHCI_TIME_POSTRESET 2
-// Start processing of companion controllers for full/low speed devices
+// Check if need companion controllers for full/low speed devices
static void
-ehci_startcompanion(struct usb_ehci_s *cntl)
+ehci_note_port(struct usb_ehci_s *cntl)
{
+ if (--cntl->checkports)
+ // Ports still being detected.
+ return;
if (! cntl->legacycount)
// No full/low speed devices found.
return;
+ // Start companion controllers.
int i;
for (i=0; i<ARRAY_SIZE(cntl->companion); i++) {
- u16 type = cntl->companion[i].type;
- if (type == USB_TYPE_UHCI)
- uhci_init(cntl->companion[i].bdf, cntl->usb.busid + i);
- else if (type == USB_TYPE_OHCI)
- ohci_init(cntl->companion[i].bdf, cntl->usb.busid + i);
- else
- return;
+ struct pci_device *pci = cntl->companion[i];
+ if (!pci)
+ break;
+
+ // ohci/uhci_init call pci_config_XXX - don't run from irq handler.
+ wait_preempt();
+
+ if (pci_classprog(pci) == PCI_CLASS_SERIAL_USB_UHCI)
+ uhci_init(pci, cntl->usb.busid + i);
+ else if (pci_classprog(pci) == PCI_CLASS_SERIAL_USB_OHCI)
+ ohci_init(pci, cntl->usb.busid + i);
}
}
-static void
-init_ehci_port(void *data)
+// Check if device attached to port
+static int
+ehci_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_ehci_s *cntl = container_of(hub->cntl, struct usb_ehci_s, usb);
-
u32 *portreg = &cntl->regs->portsc[port];
u32 portsc = readl(portreg);
portsc |= PORT_POWER;
writel(portreg, portsc);
msleep(EHCI_TIME_POSTPOWER);
- portsc = readl(portreg);
+ } else {
+ msleep(1); // XXX - time for connect to be detected.
}
+ portsc = readl(portreg);
if (!(portsc & PORT_CONNECT))
// No device present
- goto done;
+ goto doneearly;
if ((portsc & PORT_LINESTATUS_MASK) == PORT_LINESTATUS_KSTATE) {
// low speed device
cntl->legacycount++;
writel(portreg, portsc | PORT_OWNER);
- goto done;
+ goto doneearly;
}
// XXX - if just powered up, need to wait for USB_TIME_ATTDB?
- // Reset port
+ // Begin reset on port
portsc = (portsc & ~PORT_PE) | PORT_RESET;
writel(portreg, portsc);
msleep(USB_TIME_DRSTR);
- mutex_lock(&cntl->usb.resetlock);
+ return 0;
+
+doneearly:
+ ehci_note_port(cntl);
+ return -1;
+}
+
+// Reset device on port
+static int
+ehci_hub_reset(struct usbhub_s *hub, u32 port)
+{
+ struct usb_ehci_s *cntl = container_of(hub->cntl, struct usb_ehci_s, usb);
+ u32 *portreg = &cntl->regs->portsc[port];
+ u32 portsc = readl(portreg);
+
+ // Finish reset on port
portsc &= ~PORT_RESET;
writel(portreg, portsc);
msleep(EHCI_TIME_POSTRESET);
+ int rv = -1;
portsc = readl(portreg);
if (!(portsc & PORT_CONNECT))
// No longer connected
writel(portreg, portsc | PORT_OWNER);
goto resetfail;
}
- struct usb_pipe *pipe = usb_set_address(hub, port, USB_HIGHSPEED);
- if (!pipe)
- goto resetfail;
- mutex_unlock(&cntl->usb.resetlock);
-
- // Configure port
- int count = configure_usb_device(pipe);
- free_pipe(pipe);
- if (! count)
- // Disable port
- writel(portreg, portsc & ~PORT_PE);
- hub->devcount += count;
-done:
- if (! --cntl->checkports)
- ehci_startcompanion(cntl);
- hub->threads--;
- return;
+ rv = USB_HIGHSPEED;
resetfail:
- mutex_unlock(&cntl->usb.resetlock);
- goto done;
+ ehci_note_port(cntl);
+ return rv;
}
+// Disable port
+static void
+ehci_hub_disconnect(struct usbhub_s *hub, u32 port)
+{
+ struct usb_ehci_s *cntl = container_of(hub->cntl, struct usb_ehci_s, usb);
+ u32 *portreg = &cntl->regs->portsc[port];
+ u32 portsc = readl(portreg);
+ writel(portreg, portsc & ~PORT_PE);
+}
+
+static struct usbhub_op_s ehci_HubOp = {
+ .detect = ehci_hub_detect,
+ .reset = ehci_hub_reset,
+ .disconnect = ehci_hub_disconnect,
+};
+
// Find any devices connected to the root hub.
static int
check_ehci_ports(struct usb_ehci_s *cntl)
{
ASSERT32FLAT();
-
- // Launch a thread for every port.
struct usbhub_s hub;
memset(&hub, 0, sizeof(hub));
hub.cntl = &cntl->usb;
- int ports = cntl->checkports;
- hub.threads = ports;
- int i;
- for (i=0; i<ports; i++) {
- hub.port = i;
- run_thread(init_ehci_port, &hub);
- }
-
- // Wait for threads to complete.
- while (hub.threads)
- yield();
-
+ hub.portcount = cntl->checkports;
+ hub.op = &ehci_HubOp;
+ usb_enumerate(&hub);
return hub.devcount;
}
cmd = readl(&cntl->regs->usbcmd);
if (!(cmd & CMD_HCRESET))
break;
- if (check_time(end)) {
+ if (check_tsc(end)) {
warn_timeout();
goto fail;
}
+ yield();
}
// Disable interrupts (just to be safe).
}
int
-ehci_init(u16 bdf, int busid, int compbdf)
+ehci_init(struct pci_device *pci, int busid, struct pci_device *comppci)
{
if (! CONFIG_USB_EHCI)
return -1;
+ u16 bdf = pci->bdf;
u32 baseaddr = pci_config_readl(bdf, PCI_BASE_ADDRESS_0);
struct ehci_caps *caps = (void*)(baseaddr & PCI_BASE_ADDRESS_MEM_MASK);
u32 hcc_params = readl(&caps->hccparams);
}
struct usb_ehci_s *cntl = malloc_tmphigh(sizeof(*cntl));
+ if (!cntl) {
+ warn_noalloc();
+ return -1;
+ }
memset(cntl, 0, sizeof(*cntl));
cntl->usb.busid = busid;
+ cntl->usb.pci = pci;
cntl->usb.type = USB_TYPE_EHCI;
cntl->caps = caps;
cntl->regs = (void*)caps + readb(&caps->caplength);
- dprintf(3, "EHCI init on dev %02x:%02x.%x (regs=%p)\n"
+ dprintf(1, "EHCI init on dev %02x:%02x.%x (regs=%p)\n"
, pci_bdf_to_bus(bdf), pci_bdf_to_dev(bdf)
, pci_bdf_to_fn(bdf), cntl->regs);
// Find companion controllers.
int count = 0;
- int max = pci_to_bdf(pci_bdf_to_bus(bdf) + 1, 0, 0);
for (;;) {
- if (compbdf < 0 || compbdf >= bdf)
+ if (!comppci || comppci == pci)
break;
- u32 code = pci_config_readl(compbdf, PCI_CLASS_REVISION) >> 8;
- if (code == PCI_CLASS_SERIAL_USB_UHCI) {
- cntl->companion[count].bdf = compbdf;
- cntl->companion[count].type = USB_TYPE_UHCI;
- count++;
- } else if (code == PCI_CLASS_SERIAL_USB_OHCI) {
- cntl->companion[count].bdf = compbdf;
- cntl->companion[count].type = USB_TYPE_OHCI;
- count++;
- }
- compbdf = pci_next(compbdf+1, &max);
+ if (pci_classprog(comppci) == PCI_CLASS_SERIAL_USB_UHCI)
+ cntl->companion[count++] = comppci;
+ else if (pci_classprog(comppci) == PCI_CLASS_SERIAL_USB_OHCI)
+ cntl->companion[count++] = comppci;
+ comppci = comppci->next;
}
run_thread(configure_ehci, cntl);
if (qh->qtd_next & EHCI_PTR_TERM)
// XXX - confirm
return 0;
- if (check_time(end)) {
+ if (check_tsc(end)) {
warn_timeout();
return -1;
}
if (!(cmd & CMD_IAAD))
break;
}
- if (check_time(end)) {
+ if (check_tsc(end)) {
warn_timeout();
return;
}
sts = readl(&cntl->regs->usbsts);
if (sts & STS_IAA)
break;
- if (check_time(end)) {
+ if (check_tsc(end)) {
warn_timeout();
return;
}
status = td->token;
if (!(status & QTD_STS_ACTIVE))
break;
- if (check_time(end)) {
+ if (check_tsc(end)) {
warn_timeout();
return -1;
}
projects / seabios.git / blobdiff