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ppc/pnv: POWER9 XSCOM quad support

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The POWER9 processor does not support per-core frequency control. The
cores are arranged in groups of four, along with their respective L2
and L3 caches, into a structure known as a Quad. The frequency must be
managed at the Quad level.

Provide a basic Quad model to fake the settings done by the firmware
on the Non-Cacheable Unit (NCU). Each core pair (EX) needs a special
BAR setting for the TIMA area of XIVE because it resides on the same
address on all chips.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20190307223548.20516-12-clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Cédric Le Goater 2019-03-07 23:35:44 +01:00 • committed by David Gibson
parent 90ef386c74
commit 5dad902ce0
5 changed files with 146 additions and 5 deletions
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4
include/hw/ppc/pnv.h
View file

@ -26,6 +26,7 @@
#include "hw/ppc/pnv_psi.h"
#include "hw/ppc/pnv_occ.h"
#include "hw/ppc/pnv_xive.h"
#include "hw/ppc/pnv_core.h"
#define TYPE_PNV_CHIP "pnv-chip"
#define PNV_CHIP(obj) OBJECT_CHECK(PnvChip, (obj), TYPE_PNV_CHIP)
@ -89,6 +90,9 @@ typedef struct Pnv9Chip {
Pnv9Psi psi;
PnvLpcController lpc;
PnvOCC occ;
uint32_t nr_quads;
PnvQuad *quads;
} Pnv9Chip;
typedef struct PnvChipClass {

10
include/hw/ppc/pnv_core.h
View file

@ -58,4 +58,14 @@ static inline PnvCPUState *pnv_cpu_state(PowerPCCPU *cpu)
return (PnvCPUState *)cpu->machine_data;
}
#define TYPE_PNV_QUAD "powernv-cpu-quad"
#define PNV_QUAD(obj) \
OBJECT_CHECK(PnvQuad, (obj), TYPE_PNV_QUAD)
typedef struct PnvQuad {
DeviceState parent_obj;
uint32_t id;
MemoryRegion xscom_regs;
} PnvQuad;
#endif /* _PPC_PNV_CORE_H */

12
include/hw/ppc/pnv_xscom.h
View file

@ -60,10 +60,6 @@ typedef struct PnvXScomInterfaceClass {
(PNV_XSCOM_EX_CORE_BASE | ((uint64_t)(core) << 24))
#define PNV_XSCOM_EX_SIZE 0x100000
#define PNV_XSCOM_P9_EC_BASE(core) \
((uint64_t)(((core) & 0x1F) + 0x20) << 24)
#define PNV_XSCOM_P9_EC_SIZE 0x100000
#define PNV_XSCOM_LPC_BASE 0xb0020
#define PNV_XSCOM_LPC_SIZE 0x4
@ -73,6 +69,14 @@ typedef struct PnvXScomInterfaceClass {
#define PNV_XSCOM_OCC_BASE 0x0066000
#define PNV_XSCOM_OCC_SIZE 0x6000
#define PNV9_XSCOM_EC_BASE(core) \
((uint64_t)(((core) & 0x1F) + 0x20) << 24)
#define PNV9_XSCOM_EC_SIZE 0x100000
#define PNV9_XSCOM_EQ_BASE(core) \
((uint64_t)(((core) & 0x1C) + 0x40) << 22)
#define PNV9_XSCOM_EQ_SIZE 0x100000
#define PNV9_XSCOM_OCC_BASE PNV_XSCOM_OCC_BASE
#define PNV9_XSCOM_OCC_SIZE 0x8000