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ppc/pnv: add a 'dt_isa_nodename' to the chip

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The ISA bus has a different DT nodename on POWER9. Compute the name
when the PnvChip is realized, that is before it is used by the machine
to populate the device tree with the ISA devices.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20190307223548.20516-6-clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Cédric Le Goater 2019-03-07 23:35:38 +01:00 committed by David Gibson
parent 82514be28b
commit 64d011d56e
2 changed files with 7 additions and 13 deletions
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18
hw/ppc/pnv.c
View File

@ -417,24 +417,12 @@ static int pnv_dt_isa_device(DeviceState *dev, void *opaque)
return 0;
}
static int pnv_chip_isa_offset(PnvChip *chip, void *fdt)
{
char *name;
int offset;
name = g_strdup_printf("/xscom@%" PRIx64 "/isa@%x",
(uint64_t) PNV_XSCOM_BASE(chip), PNV_XSCOM_LPC_BASE);
offset = fdt_path_offset(fdt, name);
g_free(name);
return offset;
}
/* The default LPC bus of a multichip system is on chip 0. It's
* recognized by the firmware (skiboot) using a "primary" property.
*/
static void pnv_dt_isa(PnvMachineState *pnv, void *fdt)
{
int isa_offset = pnv_chip_isa_offset(pnv->chips[0], fdt);
int isa_offset = fdt_path_offset(fdt, pnv->chips[0]->dt_isa_nodename);
ForeachPopulateArgs args = {
.fdt = fdt,
.offset = isa_offset,
@ -866,6 +854,10 @@ static void pnv_chip_power8_realize(DeviceState *dev, Error **errp)
&error_fatal);
pnv_xscom_add_subregion(chip, PNV_XSCOM_LPC_BASE, &chip8->lpc.xscom_regs);
chip->dt_isa_nodename = g_strdup_printf("/xscom@%" PRIx64 "/isa@%x",
(uint64_t) PNV_XSCOM_BASE(chip),
PNV_XSCOM_LPC_BASE);
/* Interrupt Management Area. This is the memory region holding
* all the Interrupt Control Presenter (ICP) registers */
pnv_chip_icp_realize(chip8, &local_err);

2
include/hw/ppc/pnv.h
View File

@ -58,6 +58,8 @@ typedef struct PnvChip {
MemoryRegion xscom_mmio;
MemoryRegion xscom;
AddressSpace xscom_as;
gchar *dt_isa_nodename;
} PnvChip;
#define TYPE_PNV8_CHIP "pnv8-chip"