* See the COPYING file in the top-level directory.
*/
+#include "qemu/osdep.h"
#include "libqos/pci.h"
#include "hw/pci/pci_regs.h"
-#include <glib.h>
-
-#include <stdio.h>
+#include "qemu/host-utils.h"
void qpci_device_foreach(QPCIBus *bus, int vendor_id, int device_id,
void (*func)(QPCIDevice *dev, int devfn, void *data),
if (vendor_id != -1 &&
qpci_config_readw(dev, PCI_VENDOR_ID) != vendor_id) {
+ g_free(dev);
continue;
}
if (device_id != -1 &&
qpci_config_readw(dev, PCI_DEVICE_ID) != device_id) {
+ g_free(dev);
continue;
}
cmd = qpci_config_readw(dev, PCI_COMMAND);
cmd |= PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER;
qpci_config_writew(dev, PCI_COMMAND, cmd);
+
+ /* Verify the bits are now set. */
+ cmd = qpci_config_readw(dev, PCI_COMMAND);
+ g_assert_cmphex(cmd & PCI_COMMAND_IO, ==, PCI_COMMAND_IO);
+ g_assert_cmphex(cmd & PCI_COMMAND_MEMORY, ==, PCI_COMMAND_MEMORY);
+ g_assert_cmphex(cmd & PCI_COMMAND_MASTER, ==, PCI_COMMAND_MASTER);
+}
+
+uint8_t qpci_find_capability(QPCIDevice *dev, uint8_t id)
+{
+ uint8_t cap;
+ uint8_t addr = qpci_config_readb(dev, PCI_CAPABILITY_LIST);
+
+ do {
+ cap = qpci_config_readb(dev, addr);
+ if (cap != id) {
+ addr = qpci_config_readb(dev, addr + PCI_CAP_LIST_NEXT);
+ }
+ } while (cap != id && addr != 0);
+
+ return addr;
+}
+
+void qpci_msix_enable(QPCIDevice *dev)
+{
+ uint8_t addr;
+ uint16_t val;
+ uint32_t table;
+ uint8_t bir_table;
+ uint8_t bir_pba;
+
+ addr = qpci_find_capability(dev, PCI_CAP_ID_MSIX);
+ g_assert_cmphex(addr, !=, 0);
+
+ val = qpci_config_readw(dev, addr + PCI_MSIX_FLAGS);
+ qpci_config_writew(dev, addr + PCI_MSIX_FLAGS, val | PCI_MSIX_FLAGS_ENABLE);
+
+ table = qpci_config_readl(dev, addr + PCI_MSIX_TABLE);
+ bir_table = table & PCI_MSIX_FLAGS_BIRMASK;
+ dev->msix_table_bar = qpci_iomap(dev, bir_table, NULL);
+ dev->msix_table_off = table & ~PCI_MSIX_FLAGS_BIRMASK;
+
+ table = qpci_config_readl(dev, addr + PCI_MSIX_PBA);
+ bir_pba = table & PCI_MSIX_FLAGS_BIRMASK;
+ if (bir_pba != bir_table) {
+ dev->msix_pba_bar = qpci_iomap(dev, bir_pba, NULL);
+ }
+ dev->msix_pba_off = table & ~PCI_MSIX_FLAGS_BIRMASK;
+
+ dev->msix_enabled = true;
+}
+
+void qpci_msix_disable(QPCIDevice *dev)
+{
+ uint8_t addr;
+ uint16_t val;
+
+ g_assert(dev->msix_enabled);
+ addr = qpci_find_capability(dev, PCI_CAP_ID_MSIX);
+ g_assert_cmphex(addr, !=, 0);
+ val = qpci_config_readw(dev, addr + PCI_MSIX_FLAGS);
+ qpci_config_writew(dev, addr + PCI_MSIX_FLAGS,
+ val & ~PCI_MSIX_FLAGS_ENABLE);
+
+ qpci_iounmap(dev, dev->msix_table_bar);
+ qpci_iounmap(dev, dev->msix_pba_bar);
+ dev->msix_enabled = 0;
+ dev->msix_table_off = 0;
+ dev->msix_pba_off = 0;
+}
+
+bool qpci_msix_pending(QPCIDevice *dev, uint16_t entry)
+{
+ uint32_t pba_entry;
+ uint8_t bit_n = entry % 32;
+ uint64_t off = (entry / 32) * PCI_MSIX_ENTRY_SIZE / 4;
+
+ g_assert(dev->msix_enabled);
+ pba_entry = qpci_io_readl(dev, dev->msix_pba_bar, dev->msix_pba_off + off);
+ qpci_io_writel(dev, dev->msix_pba_bar, dev->msix_pba_off + off,
+ pba_entry & ~(1 << bit_n));
+ return (pba_entry & (1 << bit_n)) != 0;
+}
+
+bool qpci_msix_masked(QPCIDevice *dev, uint16_t entry)
+{
+ uint8_t addr;
+ uint16_t val;
+ uint64_t vector_off = dev->msix_table_off + entry * PCI_MSIX_ENTRY_SIZE;
+
+ g_assert(dev->msix_enabled);
+ addr = qpci_find_capability(dev, PCI_CAP_ID_MSIX);
+ g_assert_cmphex(addr, !=, 0);
+ val = qpci_config_readw(dev, addr + PCI_MSIX_FLAGS);
+
+ if (val & PCI_MSIX_FLAGS_MASKALL) {
+ return true;
+ } else {
+ return (qpci_io_readl(dev, dev->msix_table_bar,
+ vector_off + PCI_MSIX_ENTRY_VECTOR_CTRL)
+ & PCI_MSIX_ENTRY_CTRL_MASKBIT) != 0;
+ }
+}
+
+uint16_t qpci_msix_table_size(QPCIDevice *dev)
+{
+ uint8_t addr;
+ uint16_t control;
+
+ addr = qpci_find_capability(dev, PCI_CAP_ID_MSIX);
+ g_assert_cmphex(addr, !=, 0);
+
+ control = qpci_config_readw(dev, addr + PCI_MSIX_FLAGS);
+ return (control & PCI_MSIX_FLAGS_QSIZE) + 1;
}
uint8_t qpci_config_readb(QPCIDevice *dev, uint8_t offset)
dev->bus->config_writel(dev->bus, dev->devfn, offset, value);
}
+uint8_t qpci_io_readb(QPCIDevice *dev, QPCIBar token, uint64_t off)
+{
+ if (token.addr < QPCI_PIO_LIMIT) {
+ return dev->bus->pio_readb(dev->bus, token.addr + off);
+ } else {
+ uint8_t val;
+ dev->bus->memread(dev->bus, token.addr + off, &val, sizeof(val));
+ return val;
+ }
+}
+
+uint16_t qpci_io_readw(QPCIDevice *dev, QPCIBar token, uint64_t off)
+{
+ if (token.addr < QPCI_PIO_LIMIT) {
+ return dev->bus->pio_readw(dev->bus, token.addr + off);
+ } else {
+ uint16_t val;
+ dev->bus->memread(dev->bus, token.addr + off, &val, sizeof(val));
+ return le16_to_cpu(val);
+ }
+}
+
+uint32_t qpci_io_readl(QPCIDevice *dev, QPCIBar token, uint64_t off)
+{
+ if (token.addr < QPCI_PIO_LIMIT) {
+ return dev->bus->pio_readl(dev->bus, token.addr + off);
+ } else {
+ uint32_t val;
+ dev->bus->memread(dev->bus, token.addr + off, &val, sizeof(val));
+ return le32_to_cpu(val);
+ }
+}
-uint8_t qpci_io_readb(QPCIDevice *dev, void *data)
+uint64_t qpci_io_readq(QPCIDevice *dev, QPCIBar token, uint64_t off)
{
- return dev->bus->io_readb(dev->bus, data);
+ if (token.addr < QPCI_PIO_LIMIT) {
+ return dev->bus->pio_readq(dev->bus, token.addr + off);
+ } else {
+ uint64_t val;
+ dev->bus->memread(dev->bus, token.addr + off, &val, sizeof(val));
+ return le64_to_cpu(val);
+ }
}
-uint16_t qpci_io_readw(QPCIDevice *dev, void *data)
+void qpci_io_writeb(QPCIDevice *dev, QPCIBar token, uint64_t off,
+ uint8_t value)
{
- return dev->bus->io_readw(dev->bus, data);
+ if (token.addr < QPCI_PIO_LIMIT) {
+ dev->bus->pio_writeb(dev->bus, token.addr + off, value);
+ } else {
+ dev->bus->memwrite(dev->bus, token.addr + off, &value, sizeof(value));
+ }
}
-uint32_t qpci_io_readl(QPCIDevice *dev, void *data)
+void qpci_io_writew(QPCIDevice *dev, QPCIBar token, uint64_t off,
+ uint16_t value)
{
- return dev->bus->io_readl(dev->bus, data);
+ if (token.addr < QPCI_PIO_LIMIT) {
+ dev->bus->pio_writew(dev->bus, token.addr + off, value);
+ } else {
+ value = cpu_to_le16(value);
+ dev->bus->memwrite(dev->bus, token.addr + off, &value, sizeof(value));
+ }
}
+void qpci_io_writel(QPCIDevice *dev, QPCIBar token, uint64_t off,
+ uint32_t value)
+{
+ if (token.addr < QPCI_PIO_LIMIT) {
+ dev->bus->pio_writel(dev->bus, token.addr + off, value);
+ } else {
+ value = cpu_to_le32(value);
+ dev->bus->memwrite(dev->bus, token.addr + off, &value, sizeof(value));
+ }
+}
-void qpci_io_writeb(QPCIDevice *dev, void *data, uint8_t value)
+void qpci_io_writeq(QPCIDevice *dev, QPCIBar token, uint64_t off,
+ uint64_t value)
{
- dev->bus->io_writeb(dev->bus, data, value);
+ if (token.addr < QPCI_PIO_LIMIT) {
+ dev->bus->pio_writeq(dev->bus, token.addr + off, value);
+ } else {
+ value = cpu_to_le64(value);
+ dev->bus->memwrite(dev->bus, token.addr + off, &value, sizeof(value));
+ }
}
-void qpci_io_writew(QPCIDevice *dev, void *data, uint16_t value)
+void qpci_memread(QPCIDevice *dev, QPCIBar token, uint64_t off,
+ void *buf, size_t len)
{
- dev->bus->io_writew(dev->bus, data, value);
+ g_assert(token.addr >= QPCI_PIO_LIMIT);
+ dev->bus->memread(dev->bus, token.addr + off, buf, len);
}
-void qpci_io_writel(QPCIDevice *dev, void *data, uint32_t value)
+void qpci_memwrite(QPCIDevice *dev, QPCIBar token, uint64_t off,
+ const void *buf, size_t len)
{
- dev->bus->io_writel(dev->bus, data, value);
+ g_assert(token.addr >= QPCI_PIO_LIMIT);
+ dev->bus->memwrite(dev->bus, token.addr + off, buf, len);
}
-void *qpci_iomap(QPCIDevice *dev, int barno, uint64_t *sizeptr)
+QPCIBar qpci_iomap(QPCIDevice *dev, int barno, uint64_t *sizeptr)
{
- return dev->bus->iomap(dev->bus, dev, barno, sizeptr);
+ QPCIBus *bus = dev->bus;
+ static const int bar_reg_map[] = {
+ PCI_BASE_ADDRESS_0, PCI_BASE_ADDRESS_1, PCI_BASE_ADDRESS_2,
+ PCI_BASE_ADDRESS_3, PCI_BASE_ADDRESS_4, PCI_BASE_ADDRESS_5,
+ };
+ QPCIBar bar;
+ int bar_reg;
+ uint32_t addr, size;
+ uint32_t io_type;
+ uint64_t loc;
+
+ g_assert(barno >= 0 && barno <= 5);
+ bar_reg = bar_reg_map[barno];
+
+ qpci_config_writel(dev, bar_reg, 0xFFFFFFFF);
+ addr = qpci_config_readl(dev, bar_reg);
+
+ io_type = addr & PCI_BASE_ADDRESS_SPACE;
+ if (io_type == PCI_BASE_ADDRESS_SPACE_IO) {
+ addr &= PCI_BASE_ADDRESS_IO_MASK;
+ } else {
+ addr &= PCI_BASE_ADDRESS_MEM_MASK;
+ }
+
+ g_assert(addr); /* Must have *some* size bits */
+
+ size = 1U << ctz32(addr);
+ if (sizeptr) {
+ *sizeptr = size;
+ }
+
+ if (io_type == PCI_BASE_ADDRESS_SPACE_IO) {
+ loc = QEMU_ALIGN_UP(bus->pio_alloc_ptr, size);
+
+ g_assert(loc >= bus->pio_alloc_ptr);
+ g_assert(loc + size <= QPCI_PIO_LIMIT); /* Keep PIO below 64kiB */
+
+ bus->pio_alloc_ptr = loc + size;
+
+ qpci_config_writel(dev, bar_reg, loc | PCI_BASE_ADDRESS_SPACE_IO);
+ } else {
+ loc = QEMU_ALIGN_UP(bus->mmio_alloc_ptr, size);
+
+ /* Check for space */
+ g_assert(loc >= bus->mmio_alloc_ptr);
+ g_assert(loc + size <= bus->mmio_limit);
+
+ bus->mmio_alloc_ptr = loc + size;
+
+ qpci_config_writel(dev, bar_reg, loc);
+ }
+
+ bar.addr = loc;
+ return bar;
}
-void qpci_iounmap(QPCIDevice *dev, void *data)
+void qpci_iounmap(QPCIDevice *dev, QPCIBar bar)
{
- dev->bus->iounmap(dev->bus, data);
+ /* FIXME */
}
+QPCIBar qpci_legacy_iomap(QPCIDevice *dev, uint16_t addr)
+{
+ QPCIBar bar = { .addr = addr };
+ return bar;
+}
+void qpci_plug_device_test(const char *driver, const char *id,
+ uint8_t slot, const char *opts)
+{
+ QDict *response;
+ char *cmd;
+
+ cmd = g_strdup_printf("{'execute': 'device_add',"
+ " 'arguments': {"
+ " 'driver': '%s',"
+ " 'addr': '%d',"
+ " %s%s"
+ " 'id': '%s'"
+ "}}", driver, slot,
+ opts ? opts : "", opts ? "," : "",
+ id);
+ response = qmp(cmd);
+ g_free(cmd);
+ g_assert(response);
+ g_assert(!qdict_haskey(response, "error"));
+ QDECREF(response);
+}
projects / qemu.git / blobdiff