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path: root/hw/ppc/spapr_pci.c
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Diffstat (limited to 'hw/ppc/spapr_pci.c')
-rw-r--r--hw/ppc/spapr_pci.c75
1 files changed, 57 insertions, 18 deletions
diff --git a/hw/ppc/spapr_pci.c b/hw/ppc/spapr_pci.c
index cbb7cdd774..949c44fec8 100644
--- a/hw/ppc/spapr_pci.c
+++ b/hw/ppc/spapr_pci.c
@@ -35,6 +35,7 @@
#include "hw/ppc/spapr.h"
#include "hw/pci-host/spapr.h"
#include "exec/address-spaces.h"
+#include "exec/ram_addr.h"
#include <libfdt.h>
#include "trace.h"
#include "qemu/error-report.h"
@@ -45,6 +46,7 @@
#include "hw/ppc/spapr_drc.h"
#include "sysemu/device_tree.h"
#include "sysemu/kvm.h"
+#include "sysemu/hostmem.h"
#include "hw/vfio/vfio.h"
@@ -1304,11 +1306,14 @@ static void spapr_phb_realize(DeviceState *dev, Error **errp)
PCIBus *bus;
uint64_t msi_window_size = 4096;
sPAPRTCETable *tcet;
+ const unsigned windows_supported =
+ sphb->ddw_enabled ? SPAPR_PCI_DMA_MAX_WINDOWS : 1;
if (sphb->index != (uint32_t)-1) {
hwaddr windows_base;
- if ((sphb->buid != (uint64_t)-1) || (sphb->dma_liobn != (uint32_t)-1)
+ if ((sphb->buid != (uint64_t)-1) || (sphb->dma_liobn[0] != (uint32_t)-1)
+ || (sphb->dma_liobn[1] != (uint32_t)-1 && windows_supported == 2)
|| (sphb->mem_win_addr != (hwaddr)-1)
|| (sphb->io_win_addr != (hwaddr)-1)) {
error_setg(errp, "Either \"index\" or other parameters must"
@@ -1323,7 +1328,9 @@ static void spapr_phb_realize(DeviceState *dev, Error **errp)
}
sphb->buid = SPAPR_PCI_BASE_BUID + sphb->index;
- sphb->dma_liobn = SPAPR_PCI_LIOBN(sphb->index, 0);
+ for (i = 0; i < windows_supported; ++i) {
+ sphb->dma_liobn[i] = SPAPR_PCI_LIOBN(sphb->index, i);
+ }
windows_base = SPAPR_PCI_WINDOW_BASE
+ sphb->index * SPAPR_PCI_WINDOW_SPACING;
@@ -1336,8 +1343,9 @@ static void spapr_phb_realize(DeviceState *dev, Error **errp)
return;
}
- if (sphb->dma_liobn == (uint32_t)-1) {
- error_setg(errp, "LIOBN not specified for PHB");
+ if ((sphb->dma_liobn[0] == (uint32_t)-1) ||
+ ((sphb->dma_liobn[1] == (uint32_t)-1) && (windows_supported > 1))) {
+ error_setg(errp, "LIOBN(s) not specified for PHB");
return;
}
@@ -1456,16 +1464,18 @@ static void spapr_phb_realize(DeviceState *dev, Error **errp)
}
}
- tcet = spapr_tce_new_table(DEVICE(sphb), sphb->dma_liobn);
- if (!tcet) {
- error_setg(errp, "Unable to create TCE table for %s",
- sphb->dtbusname);
- return;
+ /* DMA setup */
+ for (i = 0; i < windows_supported; ++i) {
+ tcet = spapr_tce_new_table(DEVICE(sphb), sphb->dma_liobn[i]);
+ if (!tcet) {
+ error_setg(errp, "Creating window#%d failed for %s",
+ i, sphb->dtbusname);
+ return;
+ }
+ memory_region_add_subregion_overlap(&sphb->iommu_root, 0,
+ spapr_tce_get_iommu(tcet), 0);
}
- memory_region_add_subregion_overlap(&sphb->iommu_root, 0,
- spapr_tce_get_iommu(tcet), 0);
-
sphb->msi = g_hash_table_new_full(g_int_hash, g_int_equal, g_free, g_free);
}
@@ -1482,13 +1492,19 @@ static int spapr_phb_children_reset(Object *child, void *opaque)
void spapr_phb_dma_reset(sPAPRPHBState *sphb)
{
- sPAPRTCETable *tcet = spapr_tce_find_by_liobn(sphb->dma_liobn);
+ int i;
+ sPAPRTCETable *tcet;
+
+ for (i = 0; i < SPAPR_PCI_DMA_MAX_WINDOWS; ++i) {
+ tcet = spapr_tce_find_by_liobn(sphb->dma_liobn[i]);
- if (tcet && tcet->nb_table) {
- spapr_tce_table_disable(tcet);
+ if (tcet && tcet->nb_table) {
+ spapr_tce_table_disable(tcet);
+ }
}
/* Register default 32bit DMA window */
+ tcet = spapr_tce_find_by_liobn(sphb->dma_liobn[0]);
spapr_tce_table_enable(tcet, SPAPR_TCE_PAGE_SHIFT, sphb->dma_win_addr,
sphb->dma_win_size >> SPAPR_TCE_PAGE_SHIFT);
}
@@ -1510,7 +1526,8 @@ static void spapr_phb_reset(DeviceState *qdev)
static Property spapr_phb_properties[] = {
DEFINE_PROP_UINT32("index", sPAPRPHBState, index, -1),
DEFINE_PROP_UINT64("buid", sPAPRPHBState, buid, -1),
- DEFINE_PROP_UINT32("liobn", sPAPRPHBState, dma_liobn, -1),
+ DEFINE_PROP_UINT32("liobn", sPAPRPHBState, dma_liobn[0], -1),
+ DEFINE_PROP_UINT32("liobn64", sPAPRPHBState, dma_liobn[1], -1),
DEFINE_PROP_UINT64("mem_win_addr", sPAPRPHBState, mem_win_addr, -1),
DEFINE_PROP_UINT64("mem_win_size", sPAPRPHBState, mem_win_size,
SPAPR_PCI_MMIO_WIN_SIZE),
@@ -1522,6 +1539,11 @@ static Property spapr_phb_properties[] = {
/* Default DMA window is 0..1GB */
DEFINE_PROP_UINT64("dma_win_addr", sPAPRPHBState, dma_win_addr, 0),
DEFINE_PROP_UINT64("dma_win_size", sPAPRPHBState, dma_win_size, 0x40000000),
+ DEFINE_PROP_UINT64("dma64_win_addr", sPAPRPHBState, dma64_win_addr,
+ 0x800000000000000ULL),
+ DEFINE_PROP_BOOL("ddw", sPAPRPHBState, ddw_enabled, true),
+ DEFINE_PROP_UINT64("pgsz", sPAPRPHBState, page_size_mask,
+ (1ULL << 12) | (1ULL << 16)),
DEFINE_PROP_END_OF_LIST(),
};
@@ -1598,7 +1620,7 @@ static const VMStateDescription vmstate_spapr_pci = {
.post_load = spapr_pci_post_load,
.fields = (VMStateField[]) {
VMSTATE_UINT64_EQUAL(buid, sPAPRPHBState),
- VMSTATE_UINT32_EQUAL(dma_liobn, sPAPRPHBState),
+ VMSTATE_UINT32_EQUAL(dma_liobn[0], sPAPRPHBState),
VMSTATE_UINT64_EQUAL(mem_win_addr, sPAPRPHBState),
VMSTATE_UINT64_EQUAL(mem_win_size, sPAPRPHBState),
VMSTATE_UINT64_EQUAL(io_win_addr, sPAPRPHBState),
@@ -1774,6 +1796,15 @@ int spapr_populate_pci_dt(sPAPRPHBState *phb,
uint32_t interrupt_map_mask[] = {
cpu_to_be32(b_ddddd(-1)|b_fff(0)), 0x0, 0x0, cpu_to_be32(-1)};
uint32_t interrupt_map[PCI_SLOT_MAX * PCI_NUM_PINS][7];
+ uint32_t ddw_applicable[] = {
+ cpu_to_be32(RTAS_IBM_QUERY_PE_DMA_WINDOW),
+ cpu_to_be32(RTAS_IBM_CREATE_PE_DMA_WINDOW),
+ cpu_to_be32(RTAS_IBM_REMOVE_PE_DMA_WINDOW)
+ };
+ uint32_t ddw_extensions[] = {
+ cpu_to_be32(1),
+ cpu_to_be32(RTAS_IBM_RESET_PE_DMA_WINDOW)
+ };
sPAPRTCETable *tcet;
PCIBus *bus = PCI_HOST_BRIDGE(phb)->bus;
sPAPRFDT s_fdt;
@@ -1798,6 +1829,14 @@ int spapr_populate_pci_dt(sPAPRPHBState *phb,
_FDT(fdt_setprop_cell(fdt, bus_off, "ibm,pci-config-space-type", 0x1));
_FDT(fdt_setprop_cell(fdt, bus_off, "ibm,pe-total-#msi", XICS_IRQS_SPAPR));
+ /* Dynamic DMA window */
+ if (phb->ddw_enabled) {
+ _FDT(fdt_setprop(fdt, bus_off, "ibm,ddw-applicable", &ddw_applicable,
+ sizeof(ddw_applicable)));
+ _FDT(fdt_setprop(fdt, bus_off, "ibm,ddw-extensions",
+ &ddw_extensions, sizeof(ddw_extensions)));
+ }
+
/* Build the interrupt-map, this must matches what is done
* in pci_spapr_map_irq
*/
@@ -1821,7 +1860,7 @@ int spapr_populate_pci_dt(sPAPRPHBState *phb,
_FDT(fdt_setprop(fdt, bus_off, "interrupt-map", &interrupt_map,
sizeof(interrupt_map)));
- tcet = spapr_tce_find_by_liobn(phb->dma_liobn);
+ tcet = spapr_tce_find_by_liobn(phb->dma_liobn[0]);
if (!tcet) {
return -1;
}
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-28 06:12:28 +0000