hw/arm/virt: Record PCIe ranges in MemMapEntry array

To generate ACPI table for PCIe controller, we need the base and size of
the PCIe ranges. Record these ranges in MemMapEntry array, then we could
share and use them for generating ACPI table.
Signed-off-by: NShannon Zhao <zhaoshenglong@huawei.com>
Signed-off-by: NShannon Zhao <shannon.zhao@linaro.org>
Message-id: 1432522520-8068-4-git-send-email-zhaoshenglong@huawei.com
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

hw/arm/virt.c

@@ -112,14 +112,9 @@ static const MemMapEntry a15memmap[] = {
     [VIRT_FW_CFG] =     { 0x09020000, 0x0000000a },
     [VIRT_MMIO] =       { 0x0a000000, 0x00000200 },
     /* ...repeating for a total of NUM_VIRTIO_TRANSPORTS, each of that size */
-    /*
-     * PCIE verbose map:
-     *
-     * MMIO window      { 0x10000000, 0x2eff0000 },
-     * PIO window       { 0x3eff0000, 0x00010000 },
-     * ECAM             { 0x3f000000, 0x01000000 },
-     */
-    [VIRT_PCIE] =       { 0x10000000, 0x30000000 },
+    [VIRT_PCIE_MMIO] =  { 0x10000000, 0x2eff0000 },
+    [VIRT_PCIE_PIO] =   { 0x3eff0000, 0x00010000 },
+    [VIRT_PCIE_ECAM] =  { 0x3f000000, 0x01000000 },
     [VIRT_MEM] =        { 0x40000000, 30ULL * 1024 * 1024 * 1024 },
 };
 
@@ -625,16 +620,14 @@ static void create_pcie_irq_map(const VirtBoardInfo *vbi, uint32_t gic_phandle,
 static void create_pcie(const VirtBoardInfo *vbi, qemu_irq *pic,
                         uint32_t gic_phandle)
 {
-    hwaddr base = vbi->memmap[VIRT_PCIE].base;
-    hwaddr size = vbi->memmap[VIRT_PCIE].size;
-    hwaddr end = base + size;
-    hwaddr size_mmio;
-    hwaddr size_ioport = 64 * 1024;
-    int nr_pcie_buses = 16;
-    hwaddr size_ecam = PCIE_MMCFG_SIZE_MIN * nr_pcie_buses;
-    hwaddr base_mmio = base;
-    hwaddr base_ioport;
-    hwaddr base_ecam;
+    hwaddr base_mmio = vbi->memmap[VIRT_PCIE_MMIO].base;
+    hwaddr size_mmio = vbi->memmap[VIRT_PCIE_MMIO].size;
+    hwaddr base_pio = vbi->memmap[VIRT_PCIE_PIO].base;
+    hwaddr size_pio = vbi->memmap[VIRT_PCIE_PIO].size;
+    hwaddr base_ecam = vbi->memmap[VIRT_PCIE_ECAM].base;
+    hwaddr size_ecam = vbi->memmap[VIRT_PCIE_ECAM].size;
+    hwaddr base = base_mmio;
+    int nr_pcie_buses = size_ecam / PCIE_MMCFG_SIZE_MIN;
     int irq = vbi->irqmap[VIRT_PCIE];
     MemoryRegion *mmio_alias;
     MemoryRegion *mmio_reg;
@@ -644,10 +637,6 @@ static void create_pcie(const VirtBoardInfo *vbi, qemu_irq *pic,
     char *nodename;
     int i;
 
-    base_ecam = QEMU_ALIGN_DOWN(end - size_ecam, size_ecam);
-    base_ioport = QEMU_ALIGN_DOWN(base_ecam - size_ioport, size_ioport);
-    size_mmio = base_ioport - base;
-
     dev = qdev_create(NULL, TYPE_GPEX_HOST);
     qdev_init_nofail(dev);
 
@@ -670,7 +659,7 @@ static void create_pcie(const VirtBoardInfo *vbi, qemu_irq *pic,
     memory_region_add_subregion(get_system_memory(), base_mmio, mmio_alias);
 
     /* Map IO port space */
-    sysbus_mmio_map(SYS_BUS_DEVICE(dev), 2, base_ioport);
+    sysbus_mmio_map(SYS_BUS_DEVICE(dev), 2, base_pio);
 
     for (i = 0; i < GPEX_NUM_IRQS; i++) {
         sysbus_connect_irq(SYS_BUS_DEVICE(dev), i, pic[irq + i]);
@@ -690,7 +679,7 @@ static void create_pcie(const VirtBoardInfo *vbi, qemu_irq *pic,
                                  2, base_ecam, 2, size_ecam);
     qemu_fdt_setprop_sized_cells(vbi->fdt, nodename, "ranges",
                                  1, FDT_PCI_RANGE_IOPORT, 2, 0,
-                                 2, base_ioport, 2, size_ioport,
+                                 2, base_pio, 2, size_pio,
                                  1, FDT_PCI_RANGE_MMIO, 2, base_mmio,
                                  2, base_mmio, 2, size_mmio);
 

include/hw/arm/virt.h

@@ -45,6 +45,9 @@ enum {
     VIRT_RTC,
     VIRT_FW_CFG,
     VIRT_PCIE,
+    VIRT_PCIE_MMIO,
+    VIRT_PCIE_PIO,
+    VIRT_PCIE_ECAM,
 };
 
 typedef struct MemMapEntry {