pci: move pci core code to hw/pci

Move files and modify makefiles to pick them at the
new location.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

1 files changed, 0 insertions, 395 deletions

diff --git a/hw/msi.c b/hw/msi.c
deleted file mode 100644
index 33037a80e9..0000000000
--- a/hw/msi.c
+++ /dev/null
@@ -1,395 +0,0 @@
-/*
- * msi.c
- *
- * Copyright (c) 2010 Isaku Yamahata <yamahata at valinux co jp>
- *                    VA Linux Systems Japan K.K.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
-
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
-
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, see <http://www.gnu.org/licenses/>.
- */
-
-#include "msi.h"
-#include "range.h"
-
-/* Eventually those constants should go to Linux pci_regs.h */
-#define PCI_MSI_PENDING_32      0x10
-#define PCI_MSI_PENDING_64      0x14
-
-/* PCI_MSI_ADDRESS_LO */
-#define PCI_MSI_ADDRESS_LO_MASK         (~0x3)
-
-/* If we get rid of cap allocator, we won't need those. */
-#define PCI_MSI_32_SIZEOF       0x0a
-#define PCI_MSI_64_SIZEOF       0x0e
-#define PCI_MSI_32M_SIZEOF      0x14
-#define PCI_MSI_64M_SIZEOF      0x18
-
-#define PCI_MSI_VECTORS_MAX     32
-
-/* Flag for interrupt controller to declare MSI/MSI-X support */
-bool msi_supported;
-
-/* If we get rid of cap allocator, we won't need this. */
-static inline uint8_t msi_cap_sizeof(uint16_t flags)
-{
-    switch (flags & (PCI_MSI_FLAGS_MASKBIT | PCI_MSI_FLAGS_64BIT)) {
-    case PCI_MSI_FLAGS_MASKBIT | PCI_MSI_FLAGS_64BIT:
-        return PCI_MSI_64M_SIZEOF;
-    case PCI_MSI_FLAGS_64BIT:
-        return PCI_MSI_64_SIZEOF;
-    case PCI_MSI_FLAGS_MASKBIT:
-        return PCI_MSI_32M_SIZEOF;
-    case 0:
-        return PCI_MSI_32_SIZEOF;
-    default:
-        abort();
-        break;
-    }
-    return 0;
-}
-
-//#define MSI_DEBUG
-
-#ifdef MSI_DEBUG
-# define MSI_DPRINTF(fmt, ...)                                          \
-    fprintf(stderr, "%s:%d " fmt, __func__, __LINE__, ## __VA_ARGS__)
-#else
-# define MSI_DPRINTF(fmt, ...)  do { } while (0)
-#endif
-#define MSI_DEV_PRINTF(dev, fmt, ...)                                   \
-    MSI_DPRINTF("%s:%x " fmt, (dev)->name, (dev)->devfn, ## __VA_ARGS__)
-
-static inline unsigned int msi_nr_vectors(uint16_t flags)
-{
-    return 1U <<
-        ((flags & PCI_MSI_FLAGS_QSIZE) >> (ffs(PCI_MSI_FLAGS_QSIZE) - 1));
-}
-
-static inline uint8_t msi_flags_off(const PCIDevice* dev)
-{
-    return dev->msi_cap + PCI_MSI_FLAGS;
-}
-
-static inline uint8_t msi_address_lo_off(const PCIDevice* dev)
-{
-    return dev->msi_cap + PCI_MSI_ADDRESS_LO;
-}
-
-static inline uint8_t msi_address_hi_off(const PCIDevice* dev)
-{
-    return dev->msi_cap + PCI_MSI_ADDRESS_HI;
-}
-
-static inline uint8_t msi_data_off(const PCIDevice* dev, bool msi64bit)
-{
-    return dev->msi_cap + (msi64bit ? PCI_MSI_DATA_64 : PCI_MSI_DATA_32);
-}
-
-static inline uint8_t msi_mask_off(const PCIDevice* dev, bool msi64bit)
-{
-    return dev->msi_cap + (msi64bit ? PCI_MSI_MASK_64 : PCI_MSI_MASK_32);
-}
-
-static inline uint8_t msi_pending_off(const PCIDevice* dev, bool msi64bit)
-{
-    return dev->msi_cap + (msi64bit ? PCI_MSI_PENDING_64 : PCI_MSI_PENDING_32);
-}
-
-/*
- * Special API for POWER to configure the vectors through
- * a side channel. Should never be used by devices.
- */
-void msi_set_message(PCIDevice *dev, MSIMessage msg)
-{
-    uint16_t flags = pci_get_word(dev->config + msi_flags_off(dev));
-    bool msi64bit = flags & PCI_MSI_FLAGS_64BIT;
-
-    if (msi64bit) {
-        pci_set_quad(dev->config + msi_address_lo_off(dev), msg.address);
-    } else {
-        pci_set_long(dev->config + msi_address_lo_off(dev), msg.address);
-    }
-    pci_set_word(dev->config + msi_data_off(dev, msi64bit), msg.data);
-}
-
-MSIMessage msi_get_message(PCIDevice *dev, unsigned int vector)
-{
-    uint16_t flags = pci_get_word(dev->config + msi_flags_off(dev));
-    bool msi64bit = flags & PCI_MSI_FLAGS_64BIT;
-    unsigned int nr_vectors = msi_nr_vectors(flags);
-    MSIMessage msg;
-
-    assert(vector < nr_vectors);
-
-    if (msi64bit) {
-        msg.address = pci_get_quad(dev->config + msi_address_lo_off(dev));
-    } else {
-        msg.address = pci_get_long(dev->config + msi_address_lo_off(dev));
-    }
-
-    /* upper bit 31:16 is zero */
-    msg.data = pci_get_word(dev->config + msi_data_off(dev, msi64bit));
-    if (nr_vectors > 1) {
-        msg.data &= ~(nr_vectors - 1);
-        msg.data |= vector;
-    }
-
-    return msg;
-}
-
-bool msi_enabled(const PCIDevice *dev)
-{
-    return msi_present(dev) &&
-        (pci_get_word(dev->config + msi_flags_off(dev)) &
-         PCI_MSI_FLAGS_ENABLE);
-}
-
-int msi_init(struct PCIDevice *dev, uint8_t offset,
-             unsigned int nr_vectors, bool msi64bit, bool msi_per_vector_mask)
-{
-    unsigned int vectors_order;
-    uint16_t flags;
-    uint8_t cap_size;
-    int config_offset;
-
-    if (!msi_supported) {
-        return -ENOTSUP;
-    }
-
-    MSI_DEV_PRINTF(dev,
-                   "init offset: 0x%"PRIx8" vector: %"PRId8
-                   " 64bit %d mask %d\n",
-                   offset, nr_vectors, msi64bit, msi_per_vector_mask);
-
-    assert(!(nr_vectors & (nr_vectors - 1)));   /* power of 2 */
-    assert(nr_vectors > 0);
-    assert(nr_vectors <= PCI_MSI_VECTORS_MAX);
-    /* the nr of MSI vectors is up to 32 */
-    vectors_order = ffs(nr_vectors) - 1;
-
-    flags = vectors_order << (ffs(PCI_MSI_FLAGS_QMASK) - 1);
-    if (msi64bit) {
-        flags |= PCI_MSI_FLAGS_64BIT;
-    }
-    if (msi_per_vector_mask) {
-        flags |= PCI_MSI_FLAGS_MASKBIT;
-    }
-
-    cap_size = msi_cap_sizeof(flags);
-    config_offset = pci_add_capability(dev, PCI_CAP_ID_MSI, offset, cap_size);
-    if (config_offset < 0) {
-        return config_offset;
-    }
-
-    dev->msi_cap = config_offset;
-    dev->cap_present |= QEMU_PCI_CAP_MSI;
-
-    pci_set_word(dev->config + msi_flags_off(dev), flags);
-    pci_set_word(dev->wmask + msi_flags_off(dev),
-                 PCI_MSI_FLAGS_QSIZE | PCI_MSI_FLAGS_ENABLE);
-    pci_set_long(dev->wmask + msi_address_lo_off(dev),
-                 PCI_MSI_ADDRESS_LO_MASK);
-    if (msi64bit) {
-        pci_set_long(dev->wmask + msi_address_hi_off(dev), 0xffffffff);
-    }
-    pci_set_word(dev->wmask + msi_data_off(dev, msi64bit), 0xffff);
-
-    if (msi_per_vector_mask) {
-        /* Make mask bits 0 to nr_vectors - 1 writable. */
-        pci_set_long(dev->wmask + msi_mask_off(dev, msi64bit),
-                     0xffffffff >> (PCI_MSI_VECTORS_MAX - nr_vectors));
-    }
-    return config_offset;
-}
-
-void msi_uninit(struct PCIDevice *dev)
-{
-    uint16_t flags;
-    uint8_t cap_size;
-
-    if (!msi_present(dev)) {
-        return;
-    }
-    flags = pci_get_word(dev->config + msi_flags_off(dev));
-    cap_size = msi_cap_sizeof(flags);
-    pci_del_capability(dev, PCI_CAP_ID_MSI, cap_size);
-    dev->cap_present &= ~QEMU_PCI_CAP_MSI;
-
-    MSI_DEV_PRINTF(dev, "uninit\n");
-}
-
-void msi_reset(PCIDevice *dev)
-{
-    uint16_t flags;
-    bool msi64bit;
-
-    if (!msi_present(dev)) {
-        return;
-    }
-
-    flags = pci_get_word(dev->config + msi_flags_off(dev));
-    flags &= ~(PCI_MSI_FLAGS_QSIZE | PCI_MSI_FLAGS_ENABLE);
-    msi64bit = flags & PCI_MSI_FLAGS_64BIT;
-
-    pci_set_word(dev->config + msi_flags_off(dev), flags);
-    pci_set_long(dev->config + msi_address_lo_off(dev), 0);
-    if (msi64bit) {
-        pci_set_long(dev->config + msi_address_hi_off(dev), 0);
-    }
-    pci_set_word(dev->config + msi_data_off(dev, msi64bit), 0);
-    if (flags & PCI_MSI_FLAGS_MASKBIT) {
-        pci_set_long(dev->config + msi_mask_off(dev, msi64bit), 0);
-        pci_set_long(dev->config + msi_pending_off(dev, msi64bit), 0);
-    }
-    MSI_DEV_PRINTF(dev, "reset\n");
-}
-
-static bool msi_is_masked(const PCIDevice *dev, unsigned int vector)
-{
-    uint16_t flags = pci_get_word(dev->config + msi_flags_off(dev));
-    uint32_t mask;
-    assert(vector < PCI_MSI_VECTORS_MAX);
-
-    if (!(flags & PCI_MSI_FLAGS_MASKBIT)) {
-        return false;
-    }
-
-    mask = pci_get_long(dev->config +
-                        msi_mask_off(dev, flags & PCI_MSI_FLAGS_64BIT));
-    return mask & (1U << vector);
-}
-
-void msi_notify(PCIDevice *dev, unsigned int vector)
-{
-    uint16_t flags = pci_get_word(dev->config + msi_flags_off(dev));
-    bool msi64bit = flags & PCI_MSI_FLAGS_64BIT;
-    unsigned int nr_vectors = msi_nr_vectors(flags);
-    MSIMessage msg;
-
-    assert(vector < nr_vectors);
-    if (msi_is_masked(dev, vector)) {
-        assert(flags & PCI_MSI_FLAGS_MASKBIT);
-        pci_long_test_and_set_mask(
-            dev->config + msi_pending_off(dev, msi64bit), 1U << vector);
-        MSI_DEV_PRINTF(dev, "pending vector 0x%x\n", vector);
-        return;
-    }
-
-    msg = msi_get_message(dev, vector);
-
-    MSI_DEV_PRINTF(dev,
-                   "notify vector 0x%x"
-                   " address: 0x%"PRIx64" data: 0x%"PRIx32"\n",
-                   vector, msg.address, msg.data);
-    stl_le_phys(msg.address, msg.data);
-}
-
-/* Normally called by pci_default_write_config(). */
-void msi_write_config(PCIDevice *dev, uint32_t addr, uint32_t val, int len)
-{
-    uint16_t flags = pci_get_word(dev->config + msi_flags_off(dev));
-    bool msi64bit = flags & PCI_MSI_FLAGS_64BIT;
-    bool msi_per_vector_mask = flags & PCI_MSI_FLAGS_MASKBIT;
-    unsigned int nr_vectors;
-    uint8_t log_num_vecs;
-    uint8_t log_max_vecs;
-    unsigned int vector;
-    uint32_t pending;
-
-    if (!msi_present(dev) ||
-        !ranges_overlap(addr, len, dev->msi_cap, msi_cap_sizeof(flags))) {
-        return;
-    }
-
-#ifdef MSI_DEBUG
-    MSI_DEV_PRINTF(dev, "addr 0x%"PRIx32" val 0x%"PRIx32" len %d\n",
-                   addr, val, len);
-    MSI_DEV_PRINTF(dev, "ctrl: 0x%"PRIx16" address: 0x%"PRIx32,
-                   flags,
-                   pci_get_long(dev->config + msi_address_lo_off(dev)));
-    if (msi64bit) {
-        fprintf(stderr, " address-hi: 0x%"PRIx32,
-                pci_get_long(dev->config + msi_address_hi_off(dev)));
-    }
-    fprintf(stderr, " data: 0x%"PRIx16,
-            pci_get_word(dev->config + msi_data_off(dev, msi64bit)));
-    if (flags & PCI_MSI_FLAGS_MASKBIT) {
-        fprintf(stderr, " mask 0x%"PRIx32" pending 0x%"PRIx32,
-                pci_get_long(dev->config + msi_mask_off(dev, msi64bit)),
-                pci_get_long(dev->config + msi_pending_off(dev, msi64bit)));
-    }
-    fprintf(stderr, "\n");
-#endif
-
-    if (!(flags & PCI_MSI_FLAGS_ENABLE)) {
-        return;
-    }
-
-    /*
-     * Now MSI is enabled, clear INTx# interrupts.
-     * the driver is prohibited from writing enable bit to mask
-     * a service request. But the guest OS could do this.
-     * So we just discard the interrupts as moderate fallback.
-     *
-     * 6.8.3.3. Enabling Operation
-     *   While enabled for MSI or MSI-X operation, a function is prohibited
-     *   from using its INTx# pin (if implemented) to request
-     *   service (MSI, MSI-X, and INTx# are mutually exclusive).
-     */
-    pci_device_deassert_intx(dev);
-
-    /*
-     * nr_vectors might be set bigger than capable. So clamp it.
-     * This is not legal by spec, so we can do anything we like,
-     * just don't crash the host
-     */
-    log_num_vecs =
-        (flags & PCI_MSI_FLAGS_QSIZE) >> (ffs(PCI_MSI_FLAGS_QSIZE) - 1);
-    log_max_vecs =
-        (flags & PCI_MSI_FLAGS_QMASK) >> (ffs(PCI_MSI_FLAGS_QMASK) - 1);
-    if (log_num_vecs > log_max_vecs) {
-        flags &= ~PCI_MSI_FLAGS_QSIZE;
-        flags |= log_max_vecs << (ffs(PCI_MSI_FLAGS_QSIZE) - 1);
-        pci_set_word(dev->config + msi_flags_off(dev), flags);
-    }
-
-    if (!msi_per_vector_mask) {
-        /* if per vector masking isn't supported,
-           there is no pending interrupt. */
-        return;
-    }
-
-    nr_vectors = msi_nr_vectors(flags);
-
-    /* This will discard pending interrupts, if any. */
-    pending = pci_get_long(dev->config + msi_pending_off(dev, msi64bit));
-    pending &= 0xffffffff >> (PCI_MSI_VECTORS_MAX - nr_vectors);
-    pci_set_long(dev->config + msi_pending_off(dev, msi64bit), pending);
-
-    /* deliver pending interrupts which are unmasked */
-    for (vector = 0; vector < nr_vectors; ++vector) {
-        if (msi_is_masked(dev, vector) || !(pending & (1U << vector))) {
-            continue;
-        }
-
-        pci_long_test_and_clear_mask(
-            dev->config + msi_pending_off(dev, msi64bit), 1U << vector);
-        msi_notify(dev, vector);
-    }
-}
-
-unsigned int msi_nr_vectors_allocated(const PCIDevice *dev)
-{
-    uint16_t flags = pci_get_word(dev->config + msi_flags_off(dev));
-    return msi_nr_vectors(flags);
-}