From 3854ca577dad92c4fe97b4a6ebce360e25407af7 Mon Sep 17 00:00:00 2001 From: Jiang Yunhong Date: Thu, 21 Jun 2012 15:42:35 +0000 Subject: Introduce Xen PCI Passthrough, MSI A more complete history can be found here: git://xenbits.xensource.com/qemu-xen-unstable.git Signed-off-by: Jiang Yunhong Signed-off-by: Shan Haitao Signed-off-by: Anthony PERARD Acked-by: Stefano Stabellini --- hw/xen_pt.h | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 51 insertions(+) (limited to 'hw/xen_pt.h') diff --git a/hw/xen_pt.h b/hw/xen_pt.h index 4b76073b2a..41904ece93 100644 --- a/hw/xen_pt.h +++ b/hw/xen_pt.h @@ -160,6 +160,36 @@ typedef struct XenPTRegGroup { #define XEN_PT_UNASSIGNED_PIRQ (-1) +typedef struct XenPTMSI { + uint16_t flags; + uint32_t addr_lo; /* guest message address */ + uint32_t addr_hi; /* guest message upper address */ + uint16_t data; /* guest message data */ + uint32_t ctrl_offset; /* saved control offset */ + int pirq; /* guest pirq corresponding */ + bool initialized; /* when guest MSI is initialized */ + bool mapped; /* when pirq is mapped */ +} XenPTMSI; + +typedef struct XenPTMSIXEntry { + int pirq; + uint64_t addr; + uint32_t data; + uint32_t vector_ctrl; + bool updated; /* indicate whether MSI ADDR or DATA is updated */ +} XenPTMSIXEntry; +typedef struct XenPTMSIX { + uint32_t ctrl_offset; + bool enabled; + int total_entries; + int bar_index; + uint64_t table_base; + uint32_t table_offset_adjust; /* page align mmap */ + uint64_t mmio_base_addr; + MemoryRegion mmio; + void *phys_iomem_base; + XenPTMSIXEntry msix_entry[0]; +} XenPTMSIX; struct XenPCIPassthroughState { PCIDevice dev; @@ -172,6 +202,9 @@ struct XenPCIPassthroughState { uint32_t machine_irq; + XenPTMSI *msi; + XenPTMSIX *msix; + MemoryRegion bar[PCI_NUM_REGIONS - 1]; MemoryRegion rom; @@ -247,4 +280,22 @@ static inline uint8_t xen_pt_pci_intx(XenPCIPassthroughState *s) return r_val; } +/* MSI/MSI-X */ +int xen_pt_msi_set_enable(XenPCIPassthroughState *s, bool en); +int xen_pt_msi_setup(XenPCIPassthroughState *s); +int xen_pt_msi_update(XenPCIPassthroughState *d); +void xen_pt_msi_disable(XenPCIPassthroughState *s); + +int xen_pt_msix_init(XenPCIPassthroughState *s, uint32_t base); +void xen_pt_msix_delete(XenPCIPassthroughState *s); +int xen_pt_msix_update(XenPCIPassthroughState *s); +int xen_pt_msix_update_remap(XenPCIPassthroughState *s, int bar_index); +void xen_pt_msix_disable(XenPCIPassthroughState *s); + +static inline bool xen_pt_has_msix_mapping(XenPCIPassthroughState *s, int bar) +{ + return s->msix && s->msix->bar_index == bar; +} + + #endif /* !XEN_PT_H */ -- cgit v1.2.3