hw: move more files to hw/xen/

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 0 insertions, 620 deletions

diff --git a/hw/xen_pt_msi.c b/hw/xen_pt_msi.c
deleted file mode 100644
index dcdfc5c64d..0000000000
--- a/hw/xen_pt_msi.c
+++ /dev/null
@@ -1,620 +0,0 @@
-/*
- * Copyright (c) 2007, Intel Corporation.
- *
- * This work is licensed under the terms of the GNU GPL, version 2.  See
- * the COPYING file in the top-level directory.
- *
- * Jiang Yunhong <yunhong.jiang@intel.com>
- *
- * This file implements direct PCI assignment to a HVM guest
- */
-
-#include <sys/mman.h>
-
-#include "hw/xen/xen_backend.h"
-#include "hw/xen_pt.h"
-#include "hw/i386/apic-msidef.h"
-
-
-#define XEN_PT_AUTO_ASSIGN -1
-
-/* shift count for gflags */
-#define XEN_PT_GFLAGS_SHIFT_DEST_ID        0
-#define XEN_PT_GFLAGS_SHIFT_RH             8
-#define XEN_PT_GFLAGS_SHIFT_DM             9
-#define XEN_PT_GFLAGSSHIFT_DELIV_MODE     12
-#define XEN_PT_GFLAGSSHIFT_TRG_MODE       15
-
-
-/*
- * Helpers
- */
-
-static inline uint8_t msi_vector(uint32_t data)
-{
-    return (data & MSI_DATA_VECTOR_MASK) >> MSI_DATA_VECTOR_SHIFT;
-}
-
-static inline uint8_t msi_dest_id(uint32_t addr)
-{
-    return (addr & MSI_ADDR_DEST_ID_MASK) >> MSI_ADDR_DEST_ID_SHIFT;
-}
-
-static inline uint32_t msi_ext_dest_id(uint32_t addr_hi)
-{
-    return addr_hi & 0xffffff00;
-}
-
-static uint32_t msi_gflags(uint32_t data, uint64_t addr)
-{
-    uint32_t result = 0;
-    int rh, dm, dest_id, deliv_mode, trig_mode;
-
-    rh = (addr >> MSI_ADDR_REDIRECTION_SHIFT) & 0x1;
-    dm = (addr >> MSI_ADDR_DEST_MODE_SHIFT) & 0x1;
-    dest_id = msi_dest_id(addr);
-    deliv_mode = (data >> MSI_DATA_DELIVERY_MODE_SHIFT) & 0x7;
-    trig_mode = (data >> MSI_DATA_TRIGGER_SHIFT) & 0x1;
-
-    result = dest_id | (rh << XEN_PT_GFLAGS_SHIFT_RH)
-        | (dm << XEN_PT_GFLAGS_SHIFT_DM)
-        | (deliv_mode << XEN_PT_GFLAGSSHIFT_DELIV_MODE)
-        | (trig_mode << XEN_PT_GFLAGSSHIFT_TRG_MODE);
-
-    return result;
-}
-
-static inline uint64_t msi_addr64(XenPTMSI *msi)
-{
-    return (uint64_t)msi->addr_hi << 32 | msi->addr_lo;
-}
-
-static int msi_msix_enable(XenPCIPassthroughState *s,
-                           uint32_t address,
-                           uint16_t flag,
-                           bool enable)
-{
-    uint16_t val = 0;
-
-    if (!address) {
-        return -1;
-    }
-
-    xen_host_pci_get_word(&s->real_device, address, &val);
-    if (enable) {
-        val |= flag;
-    } else {
-        val &= ~flag;
-    }
-    xen_host_pci_set_word(&s->real_device, address, val);
-    return 0;
-}
-
-static int msi_msix_setup(XenPCIPassthroughState *s,
-                          uint64_t addr,
-                          uint32_t data,
-                          int *ppirq,
-                          bool is_msix,
-                          int msix_entry,
-                          bool is_not_mapped)
-{
-    uint8_t gvec = msi_vector(data);
-    int rc = 0;
-
-    assert((!is_msix && msix_entry == 0) || is_msix);
-
-    if (gvec == 0) {
-        /* if gvec is 0, the guest is asking for a particular pirq that
-         * is passed as dest_id */
-        *ppirq = msi_ext_dest_id(addr >> 32) | msi_dest_id(addr);
-        if (!*ppirq) {
-            /* this probably identifies an misconfiguration of the guest,
-             * try the emulated path */
-            *ppirq = XEN_PT_UNASSIGNED_PIRQ;
-        } else {
-            XEN_PT_LOG(&s->dev, "requested pirq %d for MSI%s"
-                       " (vec: %#x, entry: %#x)\n",
-                       *ppirq, is_msix ? "-X" : "", gvec, msix_entry);
-        }
-    }
-
-    if (is_not_mapped) {
-        uint64_t table_base = 0;
-
-        if (is_msix) {
-            table_base = s->msix->table_base;
-        }
-
-        rc = xc_physdev_map_pirq_msi(xen_xc, xen_domid, XEN_PT_AUTO_ASSIGN,
-                                     ppirq, PCI_DEVFN(s->real_device.dev,
-                                                      s->real_device.func),
-                                     s->real_device.bus,
-                                     msix_entry, table_base);
-        if (rc) {
-            XEN_PT_ERR(&s->dev,
-                       "Mapping of MSI%s (rc: %i, vec: %#x, entry %#x)\n",
-                       is_msix ? "-X" : "", rc, gvec, msix_entry);
-            return rc;
-        }
-    }
-
-    return 0;
-}
-static int msi_msix_update(XenPCIPassthroughState *s,
-                           uint64_t addr,
-                           uint32_t data,
-                           int pirq,
-                           bool is_msix,
-                           int msix_entry,
-                           int *old_pirq)
-{
-    PCIDevice *d = &s->dev;
-    uint8_t gvec = msi_vector(data);
-    uint32_t gflags = msi_gflags(data, addr);
-    int rc = 0;
-    uint64_t table_addr = 0;
-
-    XEN_PT_LOG(d, "Updating MSI%s with pirq %d gvec %#x gflags %#x"
-               " (entry: %#x)\n",
-               is_msix ? "-X" : "", pirq, gvec, gflags, msix_entry);
-
-    if (is_msix) {
-        table_addr = s->msix->mmio_base_addr;
-    }
-
-    rc = xc_domain_update_msi_irq(xen_xc, xen_domid, gvec,
-                                  pirq, gflags, table_addr);
-
-    if (rc) {
-        XEN_PT_ERR(d, "Updating of MSI%s failed. (rc: %d)\n",
-                   is_msix ? "-X" : "", rc);
-
-        if (xc_physdev_unmap_pirq(xen_xc, xen_domid, *old_pirq)) {
-            XEN_PT_ERR(d, "Unmapping of MSI%s pirq %d failed.\n",
-                       is_msix ? "-X" : "", *old_pirq);
-        }
-        *old_pirq = XEN_PT_UNASSIGNED_PIRQ;
-    }
-    return rc;
-}
-
-static int msi_msix_disable(XenPCIPassthroughState *s,
-                            uint64_t addr,
-                            uint32_t data,
-                            int pirq,
-                            bool is_msix,
-                            bool is_binded)
-{
-    PCIDevice *d = &s->dev;
-    uint8_t gvec = msi_vector(data);
-    uint32_t gflags = msi_gflags(data, addr);
-    int rc = 0;
-
-    if (pirq == XEN_PT_UNASSIGNED_PIRQ) {
-        return 0;
-    }
-
-    if (is_binded) {
-        XEN_PT_LOG(d, "Unbind MSI%s with pirq %d, gvec %#x\n",
-                   is_msix ? "-X" : "", pirq, gvec);
-        rc = xc_domain_unbind_msi_irq(xen_xc, xen_domid, gvec, pirq, gflags);
-        if (rc) {
-            XEN_PT_ERR(d, "Unbinding of MSI%s failed. (pirq: %d, gvec: %#x)\n",
-                       is_msix ? "-X" : "", pirq, gvec);
-            return rc;
-        }
-    }
-
-    XEN_PT_LOG(d, "Unmap MSI%s pirq %d\n", is_msix ? "-X" : "", pirq);
-    rc = xc_physdev_unmap_pirq(xen_xc, xen_domid, pirq);
-    if (rc) {
-        XEN_PT_ERR(d, "Unmapping of MSI%s pirq %d failed. (rc: %i)\n",
-                   is_msix ? "-X" : "", pirq, rc);
-        return rc;
-    }
-
-    return 0;
-}
-
-/*
- * MSI virtualization functions
- */
-
-int xen_pt_msi_set_enable(XenPCIPassthroughState *s, bool enable)
-{
-    XEN_PT_LOG(&s->dev, "%s MSI.\n", enable ? "enabling" : "disabling");
-
-    if (!s->msi) {
-        return -1;
-    }
-
-    return msi_msix_enable(s, s->msi->ctrl_offset, PCI_MSI_FLAGS_ENABLE,
-                           enable);
-}
-
-/* setup physical msi, but don't enable it */
-int xen_pt_msi_setup(XenPCIPassthroughState *s)
-{
-    int pirq = XEN_PT_UNASSIGNED_PIRQ;
-    int rc = 0;
-    XenPTMSI *msi = s->msi;
-
-    if (msi->initialized) {
-        XEN_PT_ERR(&s->dev,
-                   "Setup physical MSI when it has been properly initialized.\n");
-        return -1;
-    }
-
-    rc = msi_msix_setup(s, msi_addr64(msi), msi->data, &pirq, false, 0, true);
-    if (rc) {
-        return rc;
-    }
-
-    if (pirq < 0) {
-        XEN_PT_ERR(&s->dev, "Invalid pirq number: %d.\n", pirq);
-        return -1;
-    }
-
-    msi->pirq = pirq;
-    XEN_PT_LOG(&s->dev, "MSI mapped with pirq %d.\n", pirq);
-
-    return 0;
-}
-
-int xen_pt_msi_update(XenPCIPassthroughState *s)
-{
-    XenPTMSI *msi = s->msi;
-    return msi_msix_update(s, msi_addr64(msi), msi->data, msi->pirq,
-                           false, 0, &msi->pirq);
-}
-
-void xen_pt_msi_disable(XenPCIPassthroughState *s)
-{
-    XenPTMSI *msi = s->msi;
-
-    if (!msi) {
-        return;
-    }
-
-    xen_pt_msi_set_enable(s, false);
-
-    msi_msix_disable(s, msi_addr64(msi), msi->data, msi->pirq, false,
-                     msi->initialized);
-
-    /* clear msi info */
-    msi->flags = 0;
-    msi->mapped = false;
-    msi->pirq = XEN_PT_UNASSIGNED_PIRQ;
-}
-
-/*
- * MSI-X virtualization functions
- */
-
-static int msix_set_enable(XenPCIPassthroughState *s, bool enabled)
-{
-    XEN_PT_LOG(&s->dev, "%s MSI-X.\n", enabled ? "enabling" : "disabling");
-
-    if (!s->msix) {
-        return -1;
-    }
-
-    return msi_msix_enable(s, s->msix->ctrl_offset, PCI_MSIX_FLAGS_ENABLE,
-                           enabled);
-}
-
-static int xen_pt_msix_update_one(XenPCIPassthroughState *s, int entry_nr)
-{
-    XenPTMSIXEntry *entry = NULL;
-    int pirq;
-    int rc;
-
-    if (entry_nr < 0 || entry_nr >= s->msix->total_entries) {
-        return -EINVAL;
-    }
-
-    entry = &s->msix->msix_entry[entry_nr];
-
-    if (!entry->updated) {
-        return 0;
-    }
-
-    pirq = entry->pirq;
-
-    rc = msi_msix_setup(s, entry->addr, entry->data, &pirq, true, entry_nr,
-                        entry->pirq == XEN_PT_UNASSIGNED_PIRQ);
-    if (rc) {
-        return rc;
-    }
-    if (entry->pirq == XEN_PT_UNASSIGNED_PIRQ) {
-        entry->pirq = pirq;
-    }
-
-    rc = msi_msix_update(s, entry->addr, entry->data, pirq, true,
-                         entry_nr, &entry->pirq);
-
-    if (!rc) {
-        entry->updated = false;
-    }
-
-    return rc;
-}
-
-int xen_pt_msix_update(XenPCIPassthroughState *s)
-{
-    XenPTMSIX *msix = s->msix;
-    int i;
-
-    for (i = 0; i < msix->total_entries; i++) {
-        xen_pt_msix_update_one(s, i);
-    }
-
-    return 0;
-}
-
-void xen_pt_msix_disable(XenPCIPassthroughState *s)
-{
-    int i = 0;
-
-    msix_set_enable(s, false);
-
-    for (i = 0; i < s->msix->total_entries; i++) {
-        XenPTMSIXEntry *entry = &s->msix->msix_entry[i];
-
-        msi_msix_disable(s, entry->addr, entry->data, entry->pirq, true, true);
-
-        /* clear MSI-X info */
-        entry->pirq = XEN_PT_UNASSIGNED_PIRQ;
-        entry->updated = false;
-    }
-}
-
-int xen_pt_msix_update_remap(XenPCIPassthroughState *s, int bar_index)
-{
-    XenPTMSIXEntry *entry;
-    int i, ret;
-
-    if (!(s->msix && s->msix->bar_index == bar_index)) {
-        return 0;
-    }
-
-    for (i = 0; i < s->msix->total_entries; i++) {
-        entry = &s->msix->msix_entry[i];
-        if (entry->pirq != XEN_PT_UNASSIGNED_PIRQ) {
-            ret = xc_domain_unbind_pt_irq(xen_xc, xen_domid, entry->pirq,
-                                          PT_IRQ_TYPE_MSI, 0, 0, 0, 0);
-            if (ret) {
-                XEN_PT_ERR(&s->dev, "unbind MSI-X entry %d failed\n",
-                           entry->pirq);
-            }
-            entry->updated = true;
-        }
-    }
-    return xen_pt_msix_update(s);
-}
-
-static uint32_t get_entry_value(XenPTMSIXEntry *e, int offset)
-{
-    switch (offset) {
-    case PCI_MSIX_ENTRY_LOWER_ADDR:
-        return e->addr & UINT32_MAX;
-    case PCI_MSIX_ENTRY_UPPER_ADDR:
-        return e->addr >> 32;
-    case PCI_MSIX_ENTRY_DATA:
-        return e->data;
-    case PCI_MSIX_ENTRY_VECTOR_CTRL:
-        return e->vector_ctrl;
-    default:
-        return 0;
-    }
-}
-
-static void set_entry_value(XenPTMSIXEntry *e, int offset, uint32_t val)
-{
-    switch (offset) {
-    case PCI_MSIX_ENTRY_LOWER_ADDR:
-        e->addr = (e->addr & ((uint64_t)UINT32_MAX << 32)) | val;
-        break;
-    case PCI_MSIX_ENTRY_UPPER_ADDR:
-        e->addr = (uint64_t)val << 32 | (e->addr & UINT32_MAX);
-        break;
-    case PCI_MSIX_ENTRY_DATA:
-        e->data = val;
-        break;
-    case PCI_MSIX_ENTRY_VECTOR_CTRL:
-        e->vector_ctrl = val;
-        break;
-    }
-}
-
-static void pci_msix_write(void *opaque, hwaddr addr,
-                           uint64_t val, unsigned size)
-{
-    XenPCIPassthroughState *s = opaque;
-    XenPTMSIX *msix = s->msix;
-    XenPTMSIXEntry *entry;
-    int entry_nr, offset;
-
-    entry_nr = addr / PCI_MSIX_ENTRY_SIZE;
-    if (entry_nr < 0 || entry_nr >= msix->total_entries) {
-        XEN_PT_ERR(&s->dev, "asked MSI-X entry '%i' invalid!\n", entry_nr);
-        return;
-    }
-    entry = &msix->msix_entry[entry_nr];
-    offset = addr % PCI_MSIX_ENTRY_SIZE;
-
-    if (offset != PCI_MSIX_ENTRY_VECTOR_CTRL) {
-        const volatile uint32_t *vec_ctrl;
-
-        if (get_entry_value(entry, offset) == val) {
-            return;
-        }
-
-        /*
-         * If Xen intercepts the mask bit access, entry->vec_ctrl may not be
-         * up-to-date. Read from hardware directly.
-         */
-        vec_ctrl = s->msix->phys_iomem_base + entry_nr * PCI_MSIX_ENTRY_SIZE
-            + PCI_MSIX_ENTRY_VECTOR_CTRL;
-
-        if (msix->enabled && !(*vec_ctrl & PCI_MSIX_ENTRY_CTRL_MASKBIT)) {
-            XEN_PT_ERR(&s->dev, "Can't update msix entry %d since MSI-X is"
-                       " already enabled.\n", entry_nr);
-            return;
-        }
-
-        entry->updated = true;
-    }
-
-    set_entry_value(entry, offset, val);
-
-    if (offset == PCI_MSIX_ENTRY_VECTOR_CTRL) {
-        if (msix->enabled && !(val & PCI_MSIX_ENTRY_CTRL_MASKBIT)) {
-            xen_pt_msix_update_one(s, entry_nr);
-        }
-    }
-}
-
-static uint64_t pci_msix_read(void *opaque, hwaddr addr,
-                              unsigned size)
-{
-    XenPCIPassthroughState *s = opaque;
-    XenPTMSIX *msix = s->msix;
-    int entry_nr, offset;
-
-    entry_nr = addr / PCI_MSIX_ENTRY_SIZE;
-    if (entry_nr < 0) {
-        XEN_PT_ERR(&s->dev, "asked MSI-X entry '%i' invalid!\n", entry_nr);
-        return 0;
-    }
-
-    offset = addr % PCI_MSIX_ENTRY_SIZE;
-
-    if (addr < msix->total_entries * PCI_MSIX_ENTRY_SIZE) {
-        return get_entry_value(&msix->msix_entry[entry_nr], offset);
-    } else {
-        /* Pending Bit Array (PBA) */
-        return *(uint32_t *)(msix->phys_iomem_base + addr);
-    }
-}
-
-static const MemoryRegionOps pci_msix_ops = {
-    .read = pci_msix_read,
-    .write = pci_msix_write,
-    .endianness = DEVICE_NATIVE_ENDIAN,
-    .valid = {
-        .min_access_size = 4,
-        .max_access_size = 4,
-        .unaligned = false,
-    },
-};
-
-int xen_pt_msix_init(XenPCIPassthroughState *s, uint32_t base)
-{
-    uint8_t id = 0;
-    uint16_t control = 0;
-    uint32_t table_off = 0;
-    int i, total_entries, bar_index;
-    XenHostPCIDevice *hd = &s->real_device;
-    PCIDevice *d = &s->dev;
-    int fd = -1;
-    XenPTMSIX *msix = NULL;
-    int rc = 0;
-
-    rc = xen_host_pci_get_byte(hd, base + PCI_CAP_LIST_ID, &id);
-    if (rc) {
-        return rc;
-    }
-
-    if (id != PCI_CAP_ID_MSIX) {
-        XEN_PT_ERR(d, "Invalid id %#x base %#x\n", id, base);
-        return -1;
-    }
-
-    xen_host_pci_get_word(hd, base + PCI_MSIX_FLAGS, &control);
-    total_entries = control & PCI_MSIX_FLAGS_QSIZE;
-    total_entries += 1;
-
-    s->msix = g_malloc0(sizeof (XenPTMSIX)
-                        + total_entries * sizeof (XenPTMSIXEntry));
-    msix = s->msix;
-
-    msix->total_entries = total_entries;
-    for (i = 0; i < total_entries; i++) {
-        msix->msix_entry[i].pirq = XEN_PT_UNASSIGNED_PIRQ;
-    }
-
-    memory_region_init_io(&msix->mmio, &pci_msix_ops, s, "xen-pci-pt-msix",
-                          (total_entries * PCI_MSIX_ENTRY_SIZE
-                           + XC_PAGE_SIZE - 1)
-                          & XC_PAGE_MASK);
-
-    xen_host_pci_get_long(hd, base + PCI_MSIX_TABLE, &table_off);
-    bar_index = msix->bar_index = table_off & PCI_MSIX_FLAGS_BIRMASK;
-    table_off = table_off & ~PCI_MSIX_FLAGS_BIRMASK;
-    msix->table_base = s->real_device.io_regions[bar_index].base_addr;
-    XEN_PT_LOG(d, "get MSI-X table BAR base 0x%"PRIx64"\n", msix->table_base);
-
-    fd = open("/dev/mem", O_RDWR);
-    if (fd == -1) {
-        rc = -errno;
-        XEN_PT_ERR(d, "Can't open /dev/mem: %s\n", strerror(errno));
-        goto error_out;
-    }
-    XEN_PT_LOG(d, "table_off = %#x, total_entries = %d\n",
-               table_off, total_entries);
-    msix->table_offset_adjust = table_off & 0x0fff;
-    msix->phys_iomem_base =
-        mmap(NULL,
-             total_entries * PCI_MSIX_ENTRY_SIZE + msix->table_offset_adjust,
-             PROT_READ,
-             MAP_SHARED | MAP_LOCKED,
-             fd,
-             msix->table_base + table_off - msix->table_offset_adjust);
-    close(fd);
-    if (msix->phys_iomem_base == MAP_FAILED) {
-        rc = -errno;
-        XEN_PT_ERR(d, "Can't map physical MSI-X table: %s\n", strerror(errno));
-        goto error_out;
-    }
-    msix->phys_iomem_base = (char *)msix->phys_iomem_base
-        + msix->table_offset_adjust;
-
-    XEN_PT_LOG(d, "mapping physical MSI-X table to %p\n",
-               msix->phys_iomem_base);
-
-    memory_region_add_subregion_overlap(&s->bar[bar_index], table_off,
-                                        &msix->mmio,
-                                        2); /* Priority: pci default + 1 */
-
-    return 0;
-
-error_out:
-    memory_region_destroy(&msix->mmio);
-    g_free(s->msix);
-    s->msix = NULL;
-    return rc;
-}
-
-void xen_pt_msix_delete(XenPCIPassthroughState *s)
-{
-    XenPTMSIX *msix = s->msix;
-
-    if (!msix) {
-        return;
-    }
-
-    /* unmap the MSI-X memory mapped register area */
-    if (msix->phys_iomem_base) {
-        XEN_PT_LOG(&s->dev, "unmapping physical MSI-X table from %p\n",
-                   msix->phys_iomem_base);
-        munmap(msix->phys_iomem_base, msix->total_entries * PCI_MSIX_ENTRY_SIZE
-               + msix->table_offset_adjust);
-    }
-
-    memory_region_del_subregion(&s->bar[msix->bar_index], &msix->mmio);
-    memory_region_destroy(&msix->mmio);
-
-    g_free(s->msix);
-    s->msix = NULL;
-}