a3980bf517
The LPC (Low Pin Count) interface on a POWER8 is made accessible to
the system through the ADU (XSCOM interface). This interface is part
of set of units connected together via a local OPB (On-Chip Peripheral
Bus) which act as a bridge between the ADU and the off chip LPC
endpoints, like external flash modules.
The most important units of this OPB are :
- OPB Master: contains the ADU slave logic, a set of internal
registers and the logic to control the OPB.
- LPCHC (LPC HOST Controller): which implements a OPB Slave, a set of
internal registers and the LPC HOST Controller to control the LPC
interface.
Four address spaces are provided to the ADU :
- LPC Bus Firmware Memory
- LPC Bus Memory
- LPC Bus I/O (ISA bus)
- and the registers for the OPB Master and the LPC Host Controller
On POWER8, an intermediate hop is necessary to reach the OPB, through
a unit called the ECCB. OPB commands are simply mangled in ECCB write
commands.
On POWER9, the OPB master address space can be accessed via MMIO. The
logic is same but the code will be simpler as the XSCOM and ECCB hops
are not necessary anymore.
This version of the LPC controller model doesn't yet implement support
for the SerIRQ deserializer present in the Naples version of the chip
though some preliminary work is there.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
[clg: - updated for qemu-2.7
- ported on latest PowerNV patchset
- changed the XSCOM interface to fit new model
- QOMified the model
- moved the ISA hunks in another patch
- removed printf logging
- added a couple of UNIMP logging
- rewrote commit log ]
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
128 lines
3.6 KiB
C
128 lines
3.6 KiB
C
/*
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* QEMU PowerPC PowerNV various definitions
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*
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* Copyright (c) 2014-2016 BenH, IBM Corporation.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _PPC_PNV_H
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#define _PPC_PNV_H
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#include "hw/boards.h"
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#include "hw/sysbus.h"
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#include "hw/ppc/pnv_xscom.h"
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#include "hw/ppc/pnv_lpc.h"
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#define TYPE_PNV_CHIP "powernv-chip"
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#define PNV_CHIP(obj) OBJECT_CHECK(PnvChip, (obj), TYPE_PNV_CHIP)
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#define PNV_CHIP_CLASS(klass) \
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OBJECT_CLASS_CHECK(PnvChipClass, (klass), TYPE_PNV_CHIP)
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#define PNV_CHIP_GET_CLASS(obj) \
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OBJECT_GET_CLASS(PnvChipClass, (obj), TYPE_PNV_CHIP)
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typedef enum PnvChipType {
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PNV_CHIP_POWER8E, /* AKA Murano (default) */
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PNV_CHIP_POWER8, /* AKA Venice */
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PNV_CHIP_POWER8NVL, /* AKA Naples */
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PNV_CHIP_POWER9, /* AKA Nimbus */
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} PnvChipType;
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typedef struct PnvChip {
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/*< private >*/
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SysBusDevice parent_obj;
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/*< public >*/
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uint32_t chip_id;
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uint64_t ram_start;
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uint64_t ram_size;
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uint32_t nr_cores;
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uint64_t cores_mask;
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void *cores;
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hwaddr xscom_base;
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MemoryRegion xscom_mmio;
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MemoryRegion xscom;
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AddressSpace xscom_as;
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PnvLpcController lpc;
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} PnvChip;
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typedef struct PnvChipClass {
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/*< private >*/
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SysBusDeviceClass parent_class;
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/*< public >*/
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const char *cpu_model;
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PnvChipType chip_type;
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uint64_t chip_cfam_id;
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uint64_t cores_mask;
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hwaddr xscom_base;
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uint32_t (*core_pir)(PnvChip *chip, uint32_t core_id);
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} PnvChipClass;
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#define TYPE_PNV_CHIP_POWER8E TYPE_PNV_CHIP "-POWER8E"
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#define PNV_CHIP_POWER8E(obj) \
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OBJECT_CHECK(PnvChip, (obj), TYPE_PNV_CHIP_POWER8E)
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#define TYPE_PNV_CHIP_POWER8 TYPE_PNV_CHIP "-POWER8"
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#define PNV_CHIP_POWER8(obj) \
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OBJECT_CHECK(PnvChip, (obj), TYPE_PNV_CHIP_POWER8)
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#define TYPE_PNV_CHIP_POWER8NVL TYPE_PNV_CHIP "-POWER8NVL"
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#define PNV_CHIP_POWER8NVL(obj) \
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OBJECT_CHECK(PnvChip, (obj), TYPE_PNV_CHIP_POWER8NVL)
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#define TYPE_PNV_CHIP_POWER9 TYPE_PNV_CHIP "-POWER9"
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#define PNV_CHIP_POWER9(obj) \
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OBJECT_CHECK(PnvChip, (obj), TYPE_PNV_CHIP_POWER9)
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/*
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* This generates a HW chip id depending on an index:
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*
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* 0x0, 0x1, 0x10, 0x11
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*
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* 4 chips should be the maximum
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*/
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#define PNV_CHIP_HWID(i) ((((i) & 0x3e) << 3) | ((i) & 0x1))
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#define TYPE_POWERNV_MACHINE MACHINE_TYPE_NAME("powernv")
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#define POWERNV_MACHINE(obj) \
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OBJECT_CHECK(PnvMachineState, (obj), TYPE_POWERNV_MACHINE)
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typedef struct PnvMachineState {
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/*< private >*/
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MachineState parent_obj;
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uint32_t initrd_base;
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long initrd_size;
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uint32_t num_chips;
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PnvChip **chips;
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} PnvMachineState;
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#define PNV_FDT_ADDR 0x01000000
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#define PNV_TIMEBASE_FREQ 512000000ULL
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/*
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* POWER8 MMIO base addresses
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*/
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#define PNV_XSCOM_SIZE 0x800000000ull
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#define PNV_XSCOM_BASE(chip) \
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(chip->xscom_base + ((uint64_t)(chip)->chip_id) * PNV_XSCOM_SIZE)
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#endif /* _PPC_PNV_H */
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