From b04ba21e22b2df805af8236bc462c5c403fc6ee4 Mon Sep 17 00:00:00 2001 From: Gerd Hoffmann Date: Thu, 30 Aug 2012 12:06:59 +0200 Subject: [PATCH] xhci: add msix support Signed-off-by: Gerd Hoffmann --- hw/usb/hcd-xhci.c | 47 ++++++++++++++++++++++++++++++++++++++++++++++- trace-events | 3 +++ 2 files changed, 49 insertions(+), 1 deletion(-) diff --git a/hw/usb/hcd-xhci.c b/hw/usb/hcd-xhci.c index 1857f42..777f903 100644 --- a/hw/usb/hcd-xhci.c +++ b/hw/usb/hcd-xhci.c @@ -23,6 +23,7 @@ #include "hw/usb.h" #include "hw/pci.h" #include "hw/msi.h" +#include "hw/msix.h" #include "trace.h" //#define DEBUG_XHCI @@ -59,6 +60,8 @@ #define OFF_OPER LEN_CAP #define OFF_RUNTIME 0x1000 #define OFF_DOORBELL 0x2000 +#define OFF_MSIX_TABLE 0x3000 +#define OFF_MSIX_PBA 0x3800 /* must be power of 2 */ #define LEN_REGS 0x4000 @@ -411,6 +414,7 @@ struct XHCIState { uint32_t erstba_high; uint32_t erdp_low; uint32_t erdp_high; + bool msix_used; int64_t mfindex_start; QEMUTimer *mfwrap_timer; @@ -437,6 +441,7 @@ typedef struct XHCIEvRingSeg { enum xhci_flags { XHCI_FLAG_USE_MSI = 1, + XHCI_FLAG_USE_MSI_X, }; static void xhci_kick_ep(XHCIState *xhci, unsigned int slotid, @@ -616,7 +621,8 @@ static void xhci_intx_update(XHCIState *xhci) { int level = 0; - if (msi_enabled(&xhci->pci_dev)) { + if (msix_enabled(&xhci->pci_dev) || + msi_enabled(&xhci->pci_dev)) { return; } @@ -630,6 +636,30 @@ static void xhci_intx_update(XHCIState *xhci) qemu_set_irq(xhci->irq, level); } +static void xhci_msix_update(XHCIState *xhci) +{ + bool enabled; + + if (!msix_enabled(&xhci->pci_dev)) { + return; + } + + enabled = xhci->iman & IMAN_IE; + if (enabled == xhci->msix_used) { + return; + } + + if (enabled) { + trace_usb_xhci_irq_msix_use(0); + msix_vector_use(&xhci->pci_dev, 0); + xhci->msix_used = true; + } else { + trace_usb_xhci_irq_msix_unuse(0); + msix_vector_unuse(&xhci->pci_dev, 0); + xhci->msix_used = false; + } +} + static void xhci_intr_raise(XHCIState *xhci) { if (!(xhci->iman & IMAN_IP) || @@ -641,6 +671,12 @@ static void xhci_intr_raise(XHCIState *xhci) return; } + if (msix_enabled(&xhci->pci_dev)) { + trace_usb_xhci_irq_msix(0); + msix_notify(&xhci->pci_dev, 0); + return; + } + if (msi_enabled(&xhci->pci_dev)) { trace_usb_xhci_irq_msi(0); msi_notify(&xhci->pci_dev, 0); @@ -2282,6 +2318,7 @@ static void xhci_reset(DeviceState *dev) xhci->erstba_high = 0; xhci->erdp_low = 0; xhci->erdp_high = 0; + xhci->msix_used = 0; xhci->er_ep_idx = 0; xhci->er_pcs = 1; @@ -2590,6 +2627,7 @@ static void xhci_runtime_write(XHCIState *xhci, uint32_t reg, uint32_t val) xhci->iman &= ~IMAN_IE; xhci->iman |= val & IMAN_IE; xhci_intx_update(xhci); + xhci_msix_update(xhci); break; case 0x24: /* IMOD */ xhci->imod = val; @@ -2885,6 +2923,12 @@ static int usb_xhci_initfn(struct PCIDevice *dev) if (xhci->flags & (1 << XHCI_FLAG_USE_MSI)) { msi_init(&xhci->pci_dev, 0x70, MAXINTRS, true, false); } + if (xhci->flags & (1 << XHCI_FLAG_USE_MSI_X)) { + msix_init(&xhci->pci_dev, MAXINTRS, + &xhci->mem, 0, OFF_MSIX_TABLE, + &xhci->mem, 0, OFF_MSIX_PBA, + 0x90); + } return 0; } @@ -2896,6 +2940,7 @@ static const VMStateDescription vmstate_xhci = { static Property xhci_properties[] = { DEFINE_PROP_BIT("msi", XHCIState, flags, XHCI_FLAG_USE_MSI, true), + DEFINE_PROP_BIT("msix", XHCIState, flags, XHCI_FLAG_USE_MSI_X, true), DEFINE_PROP_UINT32("p2", XHCIState, numports_2, 4), DEFINE_PROP_UINT32("p3", XHCIState, numports_3, 4), DEFINE_PROP_END_OF_LIST(), diff --git a/trace-events b/trace-events index d941e78..f86bbda 100644 --- a/trace-events +++ b/trace-events @@ -316,6 +316,9 @@ usb_xhci_runtime_write(uint32_t off, uint32_t val) "off 0x%04x, val 0x%08x" usb_xhci_doorbell_write(uint32_t off, uint32_t val) "off 0x%04x, val 0x%08x" usb_xhci_irq_intx(uint32_t level) "level %d" usb_xhci_irq_msi(uint32_t nr) "nr %d" +usb_xhci_irq_msix(uint32_t nr) "nr %d" +usb_xhci_irq_msix_use(uint32_t nr) "nr %d" +usb_xhci_irq_msix_unuse(uint32_t nr) "nr %d" usb_xhci_queue_event(uint32_t idx, const char *trb, const char *evt, uint64_t param, uint32_t status, uint32_t control) "idx %d, %s, %s, p %016" PRIx64 ", s %08x, c 0x%08x" usb_xhci_fetch_trb(uint64_t addr, const char *name, uint64_t param, uint32_t status, uint32_t control) "addr %016" PRIx64 ", %s, p %016" PRIx64 ", s %08x, c 0x%08x" usb_xhci_slot_enable(uint32_t slotid) "slotid %d" -- 1.7.12.1