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spapr_pci: Allow multiple TCE tables per PHB 

At the moment sPAPRPHBState contains a @tcet pointer to the only
TCE table. However sPAPR spec allows having more than one DMA window.

Since the TCE object is already a child of SPAPR PHB object, there is
no need to keep an additional pointer to it in sPAPRPHBState so remove it.

This changes the way sPAPRPHBState::reset performs reset of sPAPRTCETable
objects.

This changes the default DMA window properties calculation.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Alexey Kardashevskiy 2014-05-27 15:36:33 +10:00 committed by Alexander Graf
parent cca7fad576
commit e28c16f61f
2 changed files with 43 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

54
hw/ppc/spapr_pci.c
View File

@ -653,11 +653,13 @@ static void spapr_phb_realize(DeviceState *dev, Error **errp)
static void spapr_phb_finish_realize(sPAPRPHBState *sphb, Error **errp)
{
sPAPRTCETable *tcet;
sphb->dma_window_start = 0;
sphb->dma_window_size = 0x40000000;
sphb->tcet = spapr_tce_new_table(DEVICE(sphb), sphb->dma_liobn,
sphb->dma_window_size);
if (!sphb->tcet) {
tcet = spapr_tce_new_table(DEVICE(sphb), sphb->dma_liobn,
sphb->dma_window_size);
if (!tcet) {
error_setg(errp, "Unable to create TCE table for %s",
sphb->dtbusname);
return ;
@ -665,16 +667,24 @@ static void spapr_phb_finish_realize(sPAPRPHBState *sphb, Error **errp)
/* Register default 32bit DMA window */
memory_region_add_subregion(&sphb->iommu_root, 0,
spapr_tce_get_iommu(sphb->tcet));
spapr_tce_get_iommu(tcet));
}
static int spapr_phb_children_reset(Object *child, void *opaque)
{
DeviceState *dev = (DeviceState *) object_dynamic_cast(child, TYPE_DEVICE);
if (dev) {
device_reset(dev);
}
return 0;
}
static void spapr_phb_reset(DeviceState *qdev)
{
SysBusDevice *s = SYS_BUS_DEVICE(qdev);
sPAPRPHBState *sphb = SPAPR_PCI_HOST_BRIDGE(s);
/* Reset the IOMMU state */
device_reset(DEVICE(sphb->tcet));
object_child_foreach(OBJECT(qdev), spapr_phb_children_reset, NULL);
}
static Property spapr_phb_properties[] = {
@ -788,6 +798,29 @@ PCIHostState *spapr_create_phb(sPAPREnvironment *spapr, int index)
#define b_fff(x) b_x((x), 8, 3) /* function number */
#define b_rrrrrrrr(x) b_x((x), 0, 8) /* register number */
typedef struct sPAPRTCEDT {
void *fdt;
int node_off;
} sPAPRTCEDT;
static int spapr_phb_children_dt(Object *child, void *opaque)
{
sPAPRTCEDT *p = opaque;
sPAPRTCETable *tcet;
tcet = (sPAPRTCETable *) object_dynamic_cast(child, TYPE_SPAPR_TCE_TABLE);
if (!tcet) {
return 0;
}
spapr_dma_dt(p->fdt, p->node_off, "ibm,dma-window",
tcet->liobn, 0,
tcet->window_size);
/* Stop after the first window */
return 1;
}
int spapr_populate_pci_dt(sPAPRPHBState *phb,
uint32_t xics_phandle,
void *fdt)
@ -867,9 +900,8 @@ int spapr_populate_pci_dt(sPAPRPHBState *phb,
_FDT(fdt_setprop(fdt, bus_off, "interrupt-map", &interrupt_map,
sizeof(interrupt_map)));
spapr_dma_dt(fdt, bus_off, "ibm,dma-window",
phb->dma_liobn, phb->dma_window_start,
phb->dma_window_size);
object_child_foreach(OBJECT(phb), spapr_phb_children_dt,
&((sPAPRTCEDT){ .fdt = fdt, .node_off = bus_off }));
return 0;
}

1
include/hw/pci-host/spapr.h
View File

@ -62,7 +62,6 @@ struct sPAPRPHBState {
uint32_t dma_liobn;
uint64_t dma_window_start;
uint64_t dma_window_size;
sPAPRTCETable *tcet;
AddressSpace iommu_as;
MemoryRegion iommu_root;