qemu/0606-xhci-implement-mfindex.patch
2012-10-28 14:05:07 -04:00

143 lines
4.2 KiB
Diff

From 1f98b775c9f02caece1df5813edbb9c0a509bd58 Mon Sep 17 00:00:00 2001
From: Gerd Hoffmann <kraxel@redhat.com>
Date: Tue, 21 Aug 2012 12:32:58 +0200
Subject: [PATCH] xhci: implement mfindex
Implement mfindex register and mfindex wrap event.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
hw/usb/hcd-xhci.c | 53 ++++++++++++++++++++++++++++++++++++++++++++++-------
1 file changed, 46 insertions(+), 7 deletions(-)
diff --git a/hw/usb/hcd-xhci.c b/hw/usb/hcd-xhci.c
index 316a303..f5ba6a4 100644
--- a/hw/usb/hcd-xhci.c
+++ b/hw/usb/hcd-xhci.c
@@ -380,8 +380,6 @@ struct XHCIState {
XHCISlot slots[MAXSLOTS];
/* Runtime Registers */
- uint32_t mfindex;
- /* note: we only support one interrupter */
uint32_t iman;
uint32_t imod;
uint32_t erstsz;
@@ -390,6 +388,9 @@ struct XHCIState {
uint32_t erdp_low;
uint32_t erdp_high;
+ int64_t mfindex_start;
+ QEMUTimer *mfwrap_timer;
+
dma_addr_t er_start;
uint32_t er_size;
bool er_pcs;
@@ -410,6 +411,11 @@ typedef struct XHCIEvRingSeg {
uint32_t rsvd;
} XHCIEvRingSeg;
+static void xhci_kick_ep(XHCIState *xhci, unsigned int slotid,
+ unsigned int epid);
+static void xhci_event(XHCIState *xhci, XHCIEvent *event);
+static void xhci_write_event(XHCIState *xhci, XHCIEvent *event);
+
static const char *TRBType_names[] = {
[TRB_RESERVED] = "TRB_RESERVED",
[TR_NORMAL] = "TR_NORMAL",
@@ -462,8 +468,36 @@ static const char *trb_name(XHCITRB *trb)
ARRAY_SIZE(TRBType_names));
}
-static void xhci_kick_ep(XHCIState *xhci, unsigned int slotid,
- unsigned int epid);
+static uint64_t xhci_mfindex_get(XHCIState *xhci)
+{
+ int64_t now = qemu_get_clock_ns(vm_clock);
+ return (now - xhci->mfindex_start) / 125000;
+}
+
+static void xhci_mfwrap_update(XHCIState *xhci)
+{
+ const uint32_t bits = USBCMD_RS | USBCMD_EWE;
+ uint32_t mfindex, left;
+ int64_t now;
+
+ if ((xhci->usbcmd & bits) == bits) {
+ now = qemu_get_clock_ns(vm_clock);
+ mfindex = ((now - xhci->mfindex_start) / 125000) & 0x3fff;
+ left = 0x4000 - mfindex;
+ qemu_mod_timer(xhci->mfwrap_timer, now + left * 125000);
+ } else {
+ qemu_del_timer(xhci->mfwrap_timer);
+ }
+}
+
+static void xhci_mfwrap_timer(void *opaque)
+{
+ XHCIState *xhci = opaque;
+ XHCIEvent wrap = { ER_MFINDEX_WRAP, CC_SUCCESS };
+
+ xhci_event(xhci, &wrap);
+ xhci_mfwrap_update(xhci);
+}
static inline dma_addr_t xhci_addr64(uint32_t low, uint32_t high)
{
@@ -793,6 +827,7 @@ static void xhci_run(XHCIState *xhci)
{
trace_usb_xhci_run();
xhci->usbsts &= ~USBSTS_HCH;
+ xhci->mfindex_start = qemu_get_clock_ns(vm_clock);
}
static void xhci_stop(XHCIState *xhci)
@@ -2048,7 +2083,6 @@ static void xhci_reset(DeviceState *dev)
xhci_update_port(xhci, xhci->ports + i, 0);
}
- xhci->mfindex = 0;
xhci->iman = 0;
xhci->imod = 0;
xhci->erstsz = 0;
@@ -2062,6 +2096,9 @@ static void xhci_reset(DeviceState *dev)
xhci->er_full = 0;
xhci->ev_buffer_put = 0;
xhci->ev_buffer_get = 0;
+
+ xhci->mfindex_start = qemu_get_clock_ns(vm_clock);
+ xhci_mfwrap_update(xhci);
}
static uint32_t xhci_cap_read(XHCIState *xhci, uint32_t reg)
@@ -2264,6 +2301,7 @@ static void xhci_oper_write(XHCIState *xhci, uint32_t reg, uint32_t val)
xhci_stop(xhci);
}
xhci->usbcmd = val & 0xc0f;
+ xhci_mfwrap_update(xhci);
if (val & USBCMD_HCRST) {
xhci_reset(&xhci->pci_dev.qdev);
}
@@ -2315,8 +2353,7 @@ static uint32_t xhci_runtime_read(XHCIState *xhci, uint32_t reg)
switch (reg) {
case 0x00: /* MFINDEX */
- fprintf(stderr, "xhci_runtime_read: MFINDEX not yet implemented\n");
- ret = xhci->mfindex;
+ ret = xhci_mfindex_get(xhci) & 0x3fff;
break;
case 0x20: /* IMAN */
ret = xhci->iman;
@@ -2618,6 +2655,8 @@ static int usb_xhci_initfn(struct PCIDevice *dev)
usb_xhci_init(xhci, &dev->qdev);
+ xhci->mfwrap_timer = qemu_new_timer_ns(vm_clock, xhci_mfwrap_timer, xhci);
+
xhci->irq = xhci->pci_dev.irq[0];
memory_region_init_io(&xhci->mem, &xhci_mem_ops, xhci,
--
1.7.12.1