0722d05ad8
The OCC is an on-chip microcontroller based on a ppc405 core used
for various power management tasks. It comes with a pile of additional
hardware sitting on the PIB (aka XSCOM bus). At this point we don't
emulate it (nor plan to do so). However there is one facility which
is provided by the surrounding hardware that we do need, which is the
interrupt generation facility. OPAL uses it to send itself interrupts
under some circumstances and there are other uses around the corner.
So this implement just enough to support this.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
[clg: - updated for qemu-2.9
- changed the XSCOM interface to fit new model
- QOMified the model ]
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>
82 lines
2.8 KiB
C
82 lines
2.8 KiB
C
/*
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* QEMU PowerPC PowerNV XSCOM bus definitions
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*
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* Copyright (c) 2016, 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_XSCOM_H
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#define _PPC_PNV_XSCOM_H
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#include "qom/object.h"
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typedef struct PnvXScomInterface {
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Object parent;
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} PnvXScomInterface;
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#define TYPE_PNV_XSCOM_INTERFACE "pnv-xscom-interface"
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#define PNV_XSCOM_INTERFACE(obj) \
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OBJECT_CHECK(PnvXScomInterface, (obj), TYPE_PNV_XSCOM_INTERFACE)
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#define PNV_XSCOM_INTERFACE_CLASS(klass) \
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OBJECT_CLASS_CHECK(PnvXScomInterfaceClass, (klass), \
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TYPE_PNV_XSCOM_INTERFACE)
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#define PNV_XSCOM_INTERFACE_GET_CLASS(obj) \
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OBJECT_GET_CLASS(PnvXScomInterfaceClass, (obj), TYPE_PNV_XSCOM_INTERFACE)
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typedef struct PnvXScomInterfaceClass {
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InterfaceClass parent;
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int (*populate)(PnvXScomInterface *dev, void *fdt, int offset);
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} PnvXScomInterfaceClass;
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/*
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* Layout of the XSCOM PCB addresses of EX core 1 (POWER 8)
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*
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* GPIO 0x1100xxxx
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* SCOM 0x1101xxxx
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* OHA 0x1102xxxx
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* CLOCK CTL 0x1103xxxx
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* FIR 0x1104xxxx
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* THERM 0x1105xxxx
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* <reserved> 0x1106xxxx
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* ..
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* 0x110Exxxx
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* PCB SLAVE 0x110Fxxxx
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*/
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#define PNV_XSCOM_EX_CORE_BASE(base, i) (base | (((uint64_t)i) << 24))
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#define PNV_XSCOM_EX_CORE_SIZE 0x100000
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#define PNV_XSCOM_LPC_BASE 0xb0020
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#define PNV_XSCOM_LPC_SIZE 0x4
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#define PNV_XSCOM_PSIHB_BASE 0x2010900
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#define PNV_XSCOM_PSIHB_SIZE 0x20
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#define PNV_XSCOM_OCC_BASE 0x0066000
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#define PNV_XSCOM_OCC_SIZE 0x6000
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extern void pnv_xscom_realize(PnvChip *chip, Error **errp);
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extern int pnv_xscom_populate(PnvChip *chip, void *fdt, int offset);
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extern void pnv_xscom_add_subregion(PnvChip *chip, hwaddr offset,
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MemoryRegion *mr);
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extern void pnv_xscom_region_init(MemoryRegion *mr,
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struct Object *owner,
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const MemoryRegionOps *ops,
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void *opaque,
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const char *name,
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uint64_t size);
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#endif /* _PPC_PNV_XSCOM_H */
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