mirror of https://gitee.com/openkylin/qemu.git
978 lines
31 KiB
C
978 lines
31 KiB
C
/*
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* QEMU PowerPC PowerNV Processor Service Interface (PSI) model
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*
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* Copyright (c) 2015-2017, 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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#include "qemu/osdep.h"
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#include "hw/irq.h"
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#include "target/ppc/cpu.h"
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#include "qemu/log.h"
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#include "qemu/module.h"
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#include "sysemu/reset.h"
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#include "qapi/error.h"
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#include "monitor/monitor.h"
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#include "exec/address-spaces.h"
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#include "hw/ppc/fdt.h"
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#include "hw/ppc/pnv.h"
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#include "hw/ppc/pnv_xscom.h"
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#include "hw/qdev-properties.h"
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#include "hw/ppc/pnv_psi.h"
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#include <libfdt.h>
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#define PSIHB_XSCOM_FIR_RW 0x00
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#define PSIHB_XSCOM_FIR_AND 0x01
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#define PSIHB_XSCOM_FIR_OR 0x02
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#define PSIHB_XSCOM_FIRMASK_RW 0x03
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#define PSIHB_XSCOM_FIRMASK_AND 0x04
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#define PSIHB_XSCOM_FIRMASK_OR 0x05
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#define PSIHB_XSCOM_FIRACT0 0x06
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#define PSIHB_XSCOM_FIRACT1 0x07
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/* Host Bridge Base Address Register */
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#define PSIHB_XSCOM_BAR 0x0a
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#define PSIHB_BAR_EN 0x0000000000000001ull
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/* FSP Base Address Register */
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#define PSIHB_XSCOM_FSPBAR 0x0b
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/* PSI Host Bridge Control/Status Register */
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#define PSIHB_XSCOM_CR 0x0e
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#define PSIHB_CR_FSP_CMD_ENABLE 0x8000000000000000ull
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#define PSIHB_CR_FSP_MMIO_ENABLE 0x4000000000000000ull
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#define PSIHB_CR_FSP_IRQ_ENABLE 0x1000000000000000ull
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#define PSIHB_CR_FSP_ERR_RSP_ENABLE 0x0800000000000000ull
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#define PSIHB_CR_PSI_LINK_ENABLE 0x0400000000000000ull
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#define PSIHB_CR_FSP_RESET 0x0200000000000000ull
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#define PSIHB_CR_PSIHB_RESET 0x0100000000000000ull
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#define PSIHB_CR_PSI_IRQ 0x0000800000000000ull
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#define PSIHB_CR_FSP_IRQ 0x0000400000000000ull
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#define PSIHB_CR_FSP_LINK_ACTIVE 0x0000200000000000ull
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#define PSIHB_CR_IRQ_CMD_EXPECT 0x0000010000000000ull
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/* and more ... */
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/* PSIHB Status / Error Mask Register */
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#define PSIHB_XSCOM_SEMR 0x0f
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/* XIVR, to signal interrupts to the CEC firmware. more XIVR below. */
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#define PSIHB_XSCOM_XIVR_FSP 0x10
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#define PSIHB_XIVR_SERVER_SH 40
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#define PSIHB_XIVR_SERVER_MSK (0xffffull << PSIHB_XIVR_SERVER_SH)
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#define PSIHB_XIVR_PRIO_SH 32
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#define PSIHB_XIVR_PRIO_MSK (0xffull << PSIHB_XIVR_PRIO_SH)
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#define PSIHB_XIVR_SRC_SH 29
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#define PSIHB_XIVR_SRC_MSK (0x7ull << PSIHB_XIVR_SRC_SH)
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#define PSIHB_XIVR_PENDING 0x01000000ull
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/* PSI Host Bridge Set Control/ Status Register */
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#define PSIHB_XSCOM_SCR 0x12
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/* PSI Host Bridge Clear Control/ Status Register */
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#define PSIHB_XSCOM_CCR 0x13
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/* DMA Upper Address Register */
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#define PSIHB_XSCOM_DMA_UPADD 0x14
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/* Interrupt Status */
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#define PSIHB_XSCOM_IRQ_STAT 0x15
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#define PSIHB_IRQ_STAT_OCC 0x0000001000000000ull
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#define PSIHB_IRQ_STAT_FSI 0x0000000800000000ull
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#define PSIHB_IRQ_STAT_LPCI2C 0x0000000400000000ull
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#define PSIHB_IRQ_STAT_LOCERR 0x0000000200000000ull
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#define PSIHB_IRQ_STAT_EXT 0x0000000100000000ull
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/* remaining XIVR */
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#define PSIHB_XSCOM_XIVR_OCC 0x16
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#define PSIHB_XSCOM_XIVR_FSI 0x17
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#define PSIHB_XSCOM_XIVR_LPCI2C 0x18
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#define PSIHB_XSCOM_XIVR_LOCERR 0x19
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#define PSIHB_XSCOM_XIVR_EXT 0x1a
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/* Interrupt Requester Source Compare Register */
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#define PSIHB_XSCOM_IRSN 0x1b
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#define PSIHB_IRSN_COMP_SH 45
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#define PSIHB_IRSN_COMP_MSK (0x7ffffull << PSIHB_IRSN_COMP_SH)
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#define PSIHB_IRSN_IRQ_MUX 0x0000000800000000ull
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#define PSIHB_IRSN_IRQ_RESET 0x0000000400000000ull
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#define PSIHB_IRSN_DOWNSTREAM_EN 0x0000000200000000ull
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#define PSIHB_IRSN_UPSTREAM_EN 0x0000000100000000ull
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#define PSIHB_IRSN_COMPMASK_SH 13
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#define PSIHB_IRSN_COMPMASK_MSK (0x7ffffull << PSIHB_IRSN_COMPMASK_SH)
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#define PSIHB_BAR_MASK 0x0003fffffff00000ull
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#define PSIHB_FSPBAR_MASK 0x0003ffff00000000ull
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#define PSIHB9_BAR_MASK 0x00fffffffff00000ull
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#define PSIHB9_FSPBAR_MASK 0x00ffffff00000000ull
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#define PSIHB_REG(addr) (((addr) >> 3) + PSIHB_XSCOM_BAR)
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static void pnv_psi_set_bar(PnvPsi *psi, uint64_t bar)
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{
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PnvPsiClass *ppc = PNV_PSI_GET_CLASS(psi);
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MemoryRegion *sysmem = get_system_memory();
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uint64_t old = psi->regs[PSIHB_XSCOM_BAR];
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psi->regs[PSIHB_XSCOM_BAR] = bar & (ppc->bar_mask | PSIHB_BAR_EN);
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/* Update MR, always remove it first */
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if (old & PSIHB_BAR_EN) {
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memory_region_del_subregion(sysmem, &psi->regs_mr);
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}
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/* Then add it back if needed */
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if (bar & PSIHB_BAR_EN) {
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uint64_t addr = bar & ppc->bar_mask;
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memory_region_add_subregion(sysmem, addr, &psi->regs_mr);
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}
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}
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static void pnv_psi_update_fsp_mr(PnvPsi *psi)
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{
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/* TODO: Update FSP MR if/when we support FSP BAR */
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}
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static void pnv_psi_set_cr(PnvPsi *psi, uint64_t cr)
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{
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uint64_t old = psi->regs[PSIHB_XSCOM_CR];
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psi->regs[PSIHB_XSCOM_CR] = cr;
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/* Check some bit changes */
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if ((old ^ psi->regs[PSIHB_XSCOM_CR]) & PSIHB_CR_FSP_MMIO_ENABLE) {
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pnv_psi_update_fsp_mr(psi);
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}
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}
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static void pnv_psi_set_irsn(PnvPsi *psi, uint64_t val)
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{
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ICSState *ics = &PNV8_PSI(psi)->ics;
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/* In this model we ignore the up/down enable bits for now
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* as SW doesn't use them (other than setting them at boot).
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* We ignore IRQ_MUX, its meaning isn't clear and we don't use
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* it and finally we ignore reset (XXX fix that ?)
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*/
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psi->regs[PSIHB_XSCOM_IRSN] = val & (PSIHB_IRSN_COMP_MSK |
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PSIHB_IRSN_IRQ_MUX |
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PSIHB_IRSN_IRQ_RESET |
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PSIHB_IRSN_DOWNSTREAM_EN |
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PSIHB_IRSN_UPSTREAM_EN);
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/* We ignore the compare mask as well, our ICS emulation is too
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* simplistic to make any use if it, and we extract the offset
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* from the compare value
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*/
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ics->offset = (val & PSIHB_IRSN_COMP_MSK) >> PSIHB_IRSN_COMP_SH;
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}
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/*
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* FSP and PSI interrupts are muxed under the same number.
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*/
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static const uint32_t xivr_regs[] = {
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[PSIHB_IRQ_PSI] = PSIHB_XSCOM_XIVR_FSP,
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[PSIHB_IRQ_FSP] = PSIHB_XSCOM_XIVR_FSP,
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[PSIHB_IRQ_OCC] = PSIHB_XSCOM_XIVR_OCC,
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[PSIHB_IRQ_FSI] = PSIHB_XSCOM_XIVR_FSI,
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[PSIHB_IRQ_LPC_I2C] = PSIHB_XSCOM_XIVR_LPCI2C,
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[PSIHB_IRQ_LOCAL_ERR] = PSIHB_XSCOM_XIVR_LOCERR,
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[PSIHB_IRQ_EXTERNAL] = PSIHB_XSCOM_XIVR_EXT,
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};
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static const uint32_t stat_regs[] = {
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[PSIHB_IRQ_PSI] = PSIHB_XSCOM_CR,
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[PSIHB_IRQ_FSP] = PSIHB_XSCOM_CR,
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[PSIHB_IRQ_OCC] = PSIHB_XSCOM_IRQ_STAT,
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[PSIHB_IRQ_FSI] = PSIHB_XSCOM_IRQ_STAT,
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[PSIHB_IRQ_LPC_I2C] = PSIHB_XSCOM_IRQ_STAT,
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[PSIHB_IRQ_LOCAL_ERR] = PSIHB_XSCOM_IRQ_STAT,
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[PSIHB_IRQ_EXTERNAL] = PSIHB_XSCOM_IRQ_STAT,
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};
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static const uint64_t stat_bits[] = {
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[PSIHB_IRQ_PSI] = PSIHB_CR_PSI_IRQ,
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[PSIHB_IRQ_FSP] = PSIHB_CR_FSP_IRQ,
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[PSIHB_IRQ_OCC] = PSIHB_IRQ_STAT_OCC,
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[PSIHB_IRQ_FSI] = PSIHB_IRQ_STAT_FSI,
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[PSIHB_IRQ_LPC_I2C] = PSIHB_IRQ_STAT_LPCI2C,
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[PSIHB_IRQ_LOCAL_ERR] = PSIHB_IRQ_STAT_LOCERR,
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[PSIHB_IRQ_EXTERNAL] = PSIHB_IRQ_STAT_EXT,
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};
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void pnv_psi_irq_set(PnvPsi *psi, int irq, bool state)
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{
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PNV_PSI_GET_CLASS(psi)->irq_set(psi, irq, state);
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}
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static void pnv_psi_power8_irq_set(PnvPsi *psi, int irq, bool state)
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{
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uint32_t xivr_reg;
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uint32_t stat_reg;
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uint32_t src;
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bool masked;
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if (irq > PSIHB_IRQ_EXTERNAL) {
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qemu_log_mask(LOG_GUEST_ERROR, "PSI: Unsupported irq %d\n", irq);
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return;
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}
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xivr_reg = xivr_regs[irq];
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stat_reg = stat_regs[irq];
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src = (psi->regs[xivr_reg] & PSIHB_XIVR_SRC_MSK) >> PSIHB_XIVR_SRC_SH;
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if (state) {
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psi->regs[stat_reg] |= stat_bits[irq];
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/* TODO: optimization, check mask here. That means
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* re-evaluating when unmasking
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*/
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qemu_irq_raise(psi->qirqs[src]);
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} else {
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psi->regs[stat_reg] &= ~stat_bits[irq];
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/* FSP and PSI are muxed so don't lower if either is still set */
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if (stat_reg != PSIHB_XSCOM_CR ||
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!(psi->regs[stat_reg] & (PSIHB_CR_PSI_IRQ | PSIHB_CR_FSP_IRQ))) {
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qemu_irq_lower(psi->qirqs[src]);
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} else {
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state = true;
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}
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}
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/* Note about the emulation of the pending bit: This isn't
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* entirely correct. The pending bit should be cleared when the
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* EOI has been received. However, we don't have callbacks on EOI
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* (especially not under KVM) so no way to emulate that properly,
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* so instead we just set that bit as the logical "output" of the
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* XIVR (ie pending & !masked)
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*
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* CLG: We could define a new ICS object with a custom eoi()
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* handler to clear the pending bit. But I am not sure this would
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* be useful for the software anyhow.
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*/
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masked = (psi->regs[xivr_reg] & PSIHB_XIVR_PRIO_MSK) == PSIHB_XIVR_PRIO_MSK;
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if (state && !masked) {
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psi->regs[xivr_reg] |= PSIHB_XIVR_PENDING;
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} else {
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psi->regs[xivr_reg] &= ~PSIHB_XIVR_PENDING;
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}
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}
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static void pnv_psi_set_xivr(PnvPsi *psi, uint32_t reg, uint64_t val)
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{
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ICSState *ics = &PNV8_PSI(psi)->ics;
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uint16_t server;
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uint8_t prio;
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uint8_t src;
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psi->regs[reg] = (psi->regs[reg] & PSIHB_XIVR_PENDING) |
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(val & (PSIHB_XIVR_SERVER_MSK |
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PSIHB_XIVR_PRIO_MSK |
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PSIHB_XIVR_SRC_MSK));
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val = psi->regs[reg];
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server = (val & PSIHB_XIVR_SERVER_MSK) >> PSIHB_XIVR_SERVER_SH;
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prio = (val & PSIHB_XIVR_PRIO_MSK) >> PSIHB_XIVR_PRIO_SH;
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src = (val & PSIHB_XIVR_SRC_MSK) >> PSIHB_XIVR_SRC_SH;
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if (src >= PSI_NUM_INTERRUPTS) {
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qemu_log_mask(LOG_GUEST_ERROR, "PSI: Unsupported irq %d\n", src);
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return;
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}
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/* Remove pending bit if the IRQ is masked */
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if ((psi->regs[reg] & PSIHB_XIVR_PRIO_MSK) == PSIHB_XIVR_PRIO_MSK) {
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psi->regs[reg] &= ~PSIHB_XIVR_PENDING;
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}
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/* The low order 2 bits are the link pointer (Type II interrupts).
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* Shift back to get a valid IRQ server.
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*/
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server >>= 2;
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/* Now because of source remapping, weird things can happen
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* if you change the source number dynamically, our simple ICS
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* doesn't deal with remapping. So we just poke a different
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* ICS entry based on what source number was written. This will
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* do for now but a more accurate implementation would instead
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* use a fixed server/prio and a remapper of the generated irq.
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*/
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ics_write_xive(ics, src, server, prio, prio);
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}
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static uint64_t pnv_psi_reg_read(PnvPsi *psi, uint32_t offset, bool mmio)
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{
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uint64_t val = 0xffffffffffffffffull;
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switch (offset) {
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case PSIHB_XSCOM_FIR_RW:
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case PSIHB_XSCOM_FIRACT0:
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case PSIHB_XSCOM_FIRACT1:
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case PSIHB_XSCOM_BAR:
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case PSIHB_XSCOM_FSPBAR:
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case PSIHB_XSCOM_CR:
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case PSIHB_XSCOM_XIVR_FSP:
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case PSIHB_XSCOM_XIVR_OCC:
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case PSIHB_XSCOM_XIVR_FSI:
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case PSIHB_XSCOM_XIVR_LPCI2C:
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case PSIHB_XSCOM_XIVR_LOCERR:
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case PSIHB_XSCOM_XIVR_EXT:
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case PSIHB_XSCOM_IRQ_STAT:
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case PSIHB_XSCOM_SEMR:
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case PSIHB_XSCOM_DMA_UPADD:
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case PSIHB_XSCOM_IRSN:
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val = psi->regs[offset];
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break;
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default:
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qemu_log_mask(LOG_UNIMP, "PSI: read at 0x%" PRIx32 "\n", offset);
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}
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return val;
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}
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static void pnv_psi_reg_write(PnvPsi *psi, uint32_t offset, uint64_t val,
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bool mmio)
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{
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switch (offset) {
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case PSIHB_XSCOM_FIR_RW:
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case PSIHB_XSCOM_FIRACT0:
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case PSIHB_XSCOM_FIRACT1:
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case PSIHB_XSCOM_SEMR:
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case PSIHB_XSCOM_DMA_UPADD:
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psi->regs[offset] = val;
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break;
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case PSIHB_XSCOM_FIR_OR:
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psi->regs[PSIHB_XSCOM_FIR_RW] |= val;
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break;
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case PSIHB_XSCOM_FIR_AND:
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psi->regs[PSIHB_XSCOM_FIR_RW] &= val;
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break;
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case PSIHB_XSCOM_BAR:
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/* Only XSCOM can write this one */
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if (!mmio) {
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pnv_psi_set_bar(psi, val);
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} else {
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qemu_log_mask(LOG_GUEST_ERROR, "PSI: invalid write of BAR\n");
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}
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break;
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case PSIHB_XSCOM_FSPBAR:
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psi->regs[PSIHB_XSCOM_FSPBAR] = val & PSIHB_FSPBAR_MASK;
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pnv_psi_update_fsp_mr(psi);
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break;
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case PSIHB_XSCOM_CR:
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pnv_psi_set_cr(psi, val);
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break;
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case PSIHB_XSCOM_SCR:
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pnv_psi_set_cr(psi, psi->regs[PSIHB_XSCOM_CR] | val);
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break;
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case PSIHB_XSCOM_CCR:
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pnv_psi_set_cr(psi, psi->regs[PSIHB_XSCOM_CR] & ~val);
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break;
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case PSIHB_XSCOM_XIVR_FSP:
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case PSIHB_XSCOM_XIVR_OCC:
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case PSIHB_XSCOM_XIVR_FSI:
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case PSIHB_XSCOM_XIVR_LPCI2C:
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case PSIHB_XSCOM_XIVR_LOCERR:
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case PSIHB_XSCOM_XIVR_EXT:
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pnv_psi_set_xivr(psi, offset, val);
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break;
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case PSIHB_XSCOM_IRQ_STAT:
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/* Read only */
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qemu_log_mask(LOG_GUEST_ERROR, "PSI: invalid write of IRQ_STAT\n");
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break;
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case PSIHB_XSCOM_IRSN:
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pnv_psi_set_irsn(psi, val);
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break;
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default:
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qemu_log_mask(LOG_UNIMP, "PSI: write at 0x%" PRIx32 "\n", offset);
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}
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}
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/*
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* The values of the registers when accessed through the MMIO region
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* follow the relation : xscom = (mmio + 0x50) >> 3
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*/
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static uint64_t pnv_psi_mmio_read(void *opaque, hwaddr addr, unsigned size)
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{
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return pnv_psi_reg_read(opaque, PSIHB_REG(addr), true);
|
|
}
|
|
|
|
static void pnv_psi_mmio_write(void *opaque, hwaddr addr,
|
|
uint64_t val, unsigned size)
|
|
{
|
|
pnv_psi_reg_write(opaque, PSIHB_REG(addr), val, true);
|
|
}
|
|
|
|
static const MemoryRegionOps psi_mmio_ops = {
|
|
.read = pnv_psi_mmio_read,
|
|
.write = pnv_psi_mmio_write,
|
|
.endianness = DEVICE_BIG_ENDIAN,
|
|
.valid = {
|
|
.min_access_size = 8,
|
|
.max_access_size = 8,
|
|
},
|
|
.impl = {
|
|
.min_access_size = 8,
|
|
.max_access_size = 8,
|
|
},
|
|
};
|
|
|
|
static uint64_t pnv_psi_xscom_read(void *opaque, hwaddr addr, unsigned size)
|
|
{
|
|
return pnv_psi_reg_read(opaque, addr >> 3, false);
|
|
}
|
|
|
|
static void pnv_psi_xscom_write(void *opaque, hwaddr addr,
|
|
uint64_t val, unsigned size)
|
|
{
|
|
pnv_psi_reg_write(opaque, addr >> 3, val, false);
|
|
}
|
|
|
|
static const MemoryRegionOps pnv_psi_xscom_ops = {
|
|
.read = pnv_psi_xscom_read,
|
|
.write = pnv_psi_xscom_write,
|
|
.endianness = DEVICE_BIG_ENDIAN,
|
|
.valid = {
|
|
.min_access_size = 8,
|
|
.max_access_size = 8,
|
|
},
|
|
.impl = {
|
|
.min_access_size = 8,
|
|
.max_access_size = 8,
|
|
}
|
|
};
|
|
|
|
static void pnv_psi_reset(DeviceState *dev)
|
|
{
|
|
PnvPsi *psi = PNV_PSI(dev);
|
|
|
|
memset(psi->regs, 0x0, sizeof(psi->regs));
|
|
|
|
psi->regs[PSIHB_XSCOM_BAR] = psi->bar | PSIHB_BAR_EN;
|
|
}
|
|
|
|
static void pnv_psi_reset_handler(void *dev)
|
|
{
|
|
device_legacy_reset(DEVICE(dev));
|
|
}
|
|
|
|
static void pnv_psi_realize(DeviceState *dev, Error **errp)
|
|
{
|
|
PnvPsi *psi = PNV_PSI(dev);
|
|
|
|
/* Default BAR for MMIO region */
|
|
pnv_psi_set_bar(psi, psi->bar | PSIHB_BAR_EN);
|
|
|
|
qemu_register_reset(pnv_psi_reset_handler, dev);
|
|
}
|
|
|
|
static void pnv_psi_power8_instance_init(Object *obj)
|
|
{
|
|
Pnv8Psi *psi8 = PNV8_PSI(obj);
|
|
|
|
object_initialize_child(obj, "ics-psi", &psi8->ics, sizeof(psi8->ics),
|
|
TYPE_ICS, &error_abort, NULL);
|
|
object_property_add_alias(obj, ICS_PROP_XICS, OBJECT(&psi8->ics),
|
|
ICS_PROP_XICS);
|
|
}
|
|
|
|
static const uint8_t irq_to_xivr[] = {
|
|
PSIHB_XSCOM_XIVR_FSP,
|
|
PSIHB_XSCOM_XIVR_OCC,
|
|
PSIHB_XSCOM_XIVR_FSI,
|
|
PSIHB_XSCOM_XIVR_LPCI2C,
|
|
PSIHB_XSCOM_XIVR_LOCERR,
|
|
PSIHB_XSCOM_XIVR_EXT,
|
|
};
|
|
|
|
static void pnv_psi_power8_realize(DeviceState *dev, Error **errp)
|
|
{
|
|
PnvPsi *psi = PNV_PSI(dev);
|
|
ICSState *ics = &PNV8_PSI(psi)->ics;
|
|
Error *err = NULL;
|
|
unsigned int i;
|
|
|
|
/* Create PSI interrupt control source */
|
|
object_property_set_int(OBJECT(ics), PSI_NUM_INTERRUPTS, "nr-irqs", &err);
|
|
if (err) {
|
|
error_propagate(errp, err);
|
|
return;
|
|
}
|
|
object_property_set_bool(OBJECT(ics), true, "realized", &err);
|
|
if (err) {
|
|
error_propagate(errp, err);
|
|
return;
|
|
}
|
|
|
|
for (i = 0; i < ics->nr_irqs; i++) {
|
|
ics_set_irq_type(ics, i, true);
|
|
}
|
|
|
|
psi->qirqs = qemu_allocate_irqs(ics_set_irq, ics, ics->nr_irqs);
|
|
|
|
/* XSCOM region for PSI registers */
|
|
pnv_xscom_region_init(&psi->xscom_regs, OBJECT(dev), &pnv_psi_xscom_ops,
|
|
psi, "xscom-psi", PNV_XSCOM_PSIHB_SIZE);
|
|
|
|
/* Initialize MMIO region */
|
|
memory_region_init_io(&psi->regs_mr, OBJECT(dev), &psi_mmio_ops, psi,
|
|
"psihb", PNV_PSIHB_SIZE);
|
|
|
|
/* Default sources in XIVR */
|
|
for (i = 0; i < PSI_NUM_INTERRUPTS; i++) {
|
|
uint8_t xivr = irq_to_xivr[i];
|
|
psi->regs[xivr] = PSIHB_XIVR_PRIO_MSK |
|
|
((uint64_t) i << PSIHB_XIVR_SRC_SH);
|
|
}
|
|
|
|
pnv_psi_realize(dev, errp);
|
|
}
|
|
|
|
static int pnv_psi_dt_xscom(PnvXScomInterface *dev, void *fdt, int xscom_offset)
|
|
{
|
|
PnvPsiClass *ppc = PNV_PSI_GET_CLASS(dev);
|
|
char *name;
|
|
int offset;
|
|
uint32_t reg[] = {
|
|
cpu_to_be32(ppc->xscom_pcba),
|
|
cpu_to_be32(ppc->xscom_size)
|
|
};
|
|
|
|
name = g_strdup_printf("psihb@%x", ppc->xscom_pcba);
|
|
offset = fdt_add_subnode(fdt, xscom_offset, name);
|
|
_FDT(offset);
|
|
g_free(name);
|
|
|
|
_FDT(fdt_setprop(fdt, offset, "reg", reg, sizeof(reg)));
|
|
_FDT(fdt_setprop_cell(fdt, offset, "#address-cells", 2));
|
|
_FDT(fdt_setprop_cell(fdt, offset, "#size-cells", 1));
|
|
_FDT(fdt_setprop(fdt, offset, "compatible", ppc->compat,
|
|
ppc->compat_size));
|
|
return 0;
|
|
}
|
|
|
|
static Property pnv_psi_properties[] = {
|
|
DEFINE_PROP_UINT64("bar", PnvPsi, bar, 0),
|
|
DEFINE_PROP_UINT64("fsp-bar", PnvPsi, fsp_bar, 0),
|
|
DEFINE_PROP_END_OF_LIST(),
|
|
};
|
|
|
|
static void pnv_psi_power8_class_init(ObjectClass *klass, void *data)
|
|
{
|
|
DeviceClass *dc = DEVICE_CLASS(klass);
|
|
PnvPsiClass *ppc = PNV_PSI_CLASS(klass);
|
|
static const char compat[] = "ibm,power8-psihb-x\0ibm,psihb-x";
|
|
|
|
dc->desc = "PowerNV PSI Controller POWER8";
|
|
dc->realize = pnv_psi_power8_realize;
|
|
|
|
ppc->xscom_pcba = PNV_XSCOM_PSIHB_BASE;
|
|
ppc->xscom_size = PNV_XSCOM_PSIHB_SIZE;
|
|
ppc->bar_mask = PSIHB_BAR_MASK;
|
|
ppc->irq_set = pnv_psi_power8_irq_set;
|
|
ppc->compat = compat;
|
|
ppc->compat_size = sizeof(compat);
|
|
}
|
|
|
|
static const TypeInfo pnv_psi_power8_info = {
|
|
.name = TYPE_PNV8_PSI,
|
|
.parent = TYPE_PNV_PSI,
|
|
.instance_size = sizeof(Pnv8Psi),
|
|
.instance_init = pnv_psi_power8_instance_init,
|
|
.class_init = pnv_psi_power8_class_init,
|
|
};
|
|
|
|
|
|
/* Common registers */
|
|
|
|
#define PSIHB9_CR 0x20
|
|
#define PSIHB9_SEMR 0x28
|
|
|
|
/* P9 registers */
|
|
|
|
#define PSIHB9_INTERRUPT_CONTROL 0x58
|
|
#define PSIHB9_IRQ_METHOD PPC_BIT(0)
|
|
#define PSIHB9_IRQ_RESET PPC_BIT(1)
|
|
#define PSIHB9_ESB_CI_BASE 0x60
|
|
#define PSIHB9_ESB_CI_64K PPC_BIT(1)
|
|
#define PSIHB9_ESB_CI_ADDR_MASK PPC_BITMASK(8, 47)
|
|
#define PSIHB9_ESB_CI_VALID PPC_BIT(63)
|
|
#define PSIHB9_ESB_NOTIF_ADDR 0x68
|
|
#define PSIHB9_ESB_NOTIF_ADDR_MASK PPC_BITMASK(8, 60)
|
|
#define PSIHB9_ESB_NOTIF_VALID PPC_BIT(63)
|
|
#define PSIHB9_IVT_OFFSET 0x70
|
|
#define PSIHB9_IVT_OFF_SHIFT 32
|
|
|
|
#define PSIHB9_IRQ_LEVEL 0x78 /* assertion */
|
|
#define PSIHB9_IRQ_LEVEL_PSI PPC_BIT(0)
|
|
#define PSIHB9_IRQ_LEVEL_OCC PPC_BIT(1)
|
|
#define PSIHB9_IRQ_LEVEL_FSI PPC_BIT(2)
|
|
#define PSIHB9_IRQ_LEVEL_LPCHC PPC_BIT(3)
|
|
#define PSIHB9_IRQ_LEVEL_LOCAL_ERR PPC_BIT(4)
|
|
#define PSIHB9_IRQ_LEVEL_GLOBAL_ERR PPC_BIT(5)
|
|
#define PSIHB9_IRQ_LEVEL_TPM PPC_BIT(6)
|
|
#define PSIHB9_IRQ_LEVEL_LPC_SIRQ1 PPC_BIT(7)
|
|
#define PSIHB9_IRQ_LEVEL_LPC_SIRQ2 PPC_BIT(8)
|
|
#define PSIHB9_IRQ_LEVEL_LPC_SIRQ3 PPC_BIT(9)
|
|
#define PSIHB9_IRQ_LEVEL_LPC_SIRQ4 PPC_BIT(10)
|
|
#define PSIHB9_IRQ_LEVEL_SBE_I2C PPC_BIT(11)
|
|
#define PSIHB9_IRQ_LEVEL_DIO PPC_BIT(12)
|
|
#define PSIHB9_IRQ_LEVEL_PSU PPC_BIT(13)
|
|
#define PSIHB9_IRQ_LEVEL_I2C_C PPC_BIT(14)
|
|
#define PSIHB9_IRQ_LEVEL_I2C_D PPC_BIT(15)
|
|
#define PSIHB9_IRQ_LEVEL_I2C_E PPC_BIT(16)
|
|
#define PSIHB9_IRQ_LEVEL_SBE PPC_BIT(19)
|
|
|
|
#define PSIHB9_IRQ_STAT 0x80 /* P bit */
|
|
#define PSIHB9_IRQ_STAT_PSI PPC_BIT(0)
|
|
#define PSIHB9_IRQ_STAT_OCC PPC_BIT(1)
|
|
#define PSIHB9_IRQ_STAT_FSI PPC_BIT(2)
|
|
#define PSIHB9_IRQ_STAT_LPCHC PPC_BIT(3)
|
|
#define PSIHB9_IRQ_STAT_LOCAL_ERR PPC_BIT(4)
|
|
#define PSIHB9_IRQ_STAT_GLOBAL_ERR PPC_BIT(5)
|
|
#define PSIHB9_IRQ_STAT_TPM PPC_BIT(6)
|
|
#define PSIHB9_IRQ_STAT_LPC_SIRQ1 PPC_BIT(7)
|
|
#define PSIHB9_IRQ_STAT_LPC_SIRQ2 PPC_BIT(8)
|
|
#define PSIHB9_IRQ_STAT_LPC_SIRQ3 PPC_BIT(9)
|
|
#define PSIHB9_IRQ_STAT_LPC_SIRQ4 PPC_BIT(10)
|
|
#define PSIHB9_IRQ_STAT_SBE_I2C PPC_BIT(11)
|
|
#define PSIHB9_IRQ_STAT_DIO PPC_BIT(12)
|
|
#define PSIHB9_IRQ_STAT_PSU PPC_BIT(13)
|
|
|
|
static void pnv_psi_notify(XiveNotifier *xf, uint32_t srcno)
|
|
{
|
|
PnvPsi *psi = PNV_PSI(xf);
|
|
uint64_t notif_port = psi->regs[PSIHB_REG(PSIHB9_ESB_NOTIF_ADDR)];
|
|
bool valid = notif_port & PSIHB9_ESB_NOTIF_VALID;
|
|
uint64_t notify_addr = notif_port & ~PSIHB9_ESB_NOTIF_VALID;
|
|
|
|
uint32_t offset =
|
|
(psi->regs[PSIHB_REG(PSIHB9_IVT_OFFSET)] >> PSIHB9_IVT_OFF_SHIFT);
|
|
uint64_t data = XIVE_TRIGGER_PQ | offset | srcno;
|
|
MemTxResult result;
|
|
|
|
if (!valid) {
|
|
return;
|
|
}
|
|
|
|
address_space_stq_be(&address_space_memory, notify_addr, data,
|
|
MEMTXATTRS_UNSPECIFIED, &result);
|
|
if (result != MEMTX_OK) {
|
|
qemu_log_mask(LOG_GUEST_ERROR, "%s: trigger failed @%"
|
|
HWADDR_PRIx "\n", __func__, notif_port);
|
|
return;
|
|
}
|
|
}
|
|
|
|
static uint64_t pnv_psi_p9_mmio_read(void *opaque, hwaddr addr, unsigned size)
|
|
{
|
|
PnvPsi *psi = PNV_PSI(opaque);
|
|
uint32_t reg = PSIHB_REG(addr);
|
|
uint64_t val = -1;
|
|
|
|
switch (addr) {
|
|
case PSIHB9_CR:
|
|
case PSIHB9_SEMR:
|
|
/* FSP stuff */
|
|
case PSIHB9_INTERRUPT_CONTROL:
|
|
case PSIHB9_ESB_CI_BASE:
|
|
case PSIHB9_ESB_NOTIF_ADDR:
|
|
case PSIHB9_IVT_OFFSET:
|
|
val = psi->regs[reg];
|
|
break;
|
|
default:
|
|
qemu_log_mask(LOG_GUEST_ERROR, "PSI: read at 0x%" PRIx64 "\n", addr);
|
|
}
|
|
|
|
return val;
|
|
}
|
|
|
|
static void pnv_psi_p9_mmio_write(void *opaque, hwaddr addr,
|
|
uint64_t val, unsigned size)
|
|
{
|
|
PnvPsi *psi = PNV_PSI(opaque);
|
|
Pnv9Psi *psi9 = PNV9_PSI(psi);
|
|
uint32_t reg = PSIHB_REG(addr);
|
|
MemoryRegion *sysmem = get_system_memory();
|
|
|
|
switch (addr) {
|
|
case PSIHB9_CR:
|
|
case PSIHB9_SEMR:
|
|
/* FSP stuff */
|
|
break;
|
|
case PSIHB9_INTERRUPT_CONTROL:
|
|
if (val & PSIHB9_IRQ_RESET) {
|
|
device_legacy_reset(DEVICE(&psi9->source));
|
|
}
|
|
psi->regs[reg] = val;
|
|
break;
|
|
|
|
case PSIHB9_ESB_CI_BASE:
|
|
if (!(val & PSIHB9_ESB_CI_VALID)) {
|
|
if (psi->regs[reg] & PSIHB9_ESB_CI_VALID) {
|
|
memory_region_del_subregion(sysmem, &psi9->source.esb_mmio);
|
|
}
|
|
} else {
|
|
if (!(psi->regs[reg] & PSIHB9_ESB_CI_VALID)) {
|
|
memory_region_add_subregion(sysmem,
|
|
val & ~PSIHB9_ESB_CI_VALID,
|
|
&psi9->source.esb_mmio);
|
|
}
|
|
}
|
|
psi->regs[reg] = val;
|
|
break;
|
|
|
|
case PSIHB9_ESB_NOTIF_ADDR:
|
|
psi->regs[reg] = val;
|
|
break;
|
|
case PSIHB9_IVT_OFFSET:
|
|
psi->regs[reg] = val;
|
|
break;
|
|
default:
|
|
qemu_log_mask(LOG_GUEST_ERROR, "PSI: write at 0x%" PRIx64 "\n", addr);
|
|
}
|
|
}
|
|
|
|
static const MemoryRegionOps pnv_psi_p9_mmio_ops = {
|
|
.read = pnv_psi_p9_mmio_read,
|
|
.write = pnv_psi_p9_mmio_write,
|
|
.endianness = DEVICE_BIG_ENDIAN,
|
|
.valid = {
|
|
.min_access_size = 8,
|
|
.max_access_size = 8,
|
|
},
|
|
.impl = {
|
|
.min_access_size = 8,
|
|
.max_access_size = 8,
|
|
},
|
|
};
|
|
|
|
static uint64_t pnv_psi_p9_xscom_read(void *opaque, hwaddr addr, unsigned size)
|
|
{
|
|
/* No read are expected */
|
|
qemu_log_mask(LOG_GUEST_ERROR, "PSI: xscom read at 0x%" PRIx64 "\n", addr);
|
|
return -1;
|
|
}
|
|
|
|
static void pnv_psi_p9_xscom_write(void *opaque, hwaddr addr,
|
|
uint64_t val, unsigned size)
|
|
{
|
|
PnvPsi *psi = PNV_PSI(opaque);
|
|
|
|
/* XSCOM is only used to set the PSIHB MMIO region */
|
|
switch (addr >> 3) {
|
|
case PSIHB_XSCOM_BAR:
|
|
pnv_psi_set_bar(psi, val);
|
|
break;
|
|
default:
|
|
qemu_log_mask(LOG_GUEST_ERROR, "PSI: xscom write at 0x%" PRIx64 "\n",
|
|
addr);
|
|
}
|
|
}
|
|
|
|
static const MemoryRegionOps pnv_psi_p9_xscom_ops = {
|
|
.read = pnv_psi_p9_xscom_read,
|
|
.write = pnv_psi_p9_xscom_write,
|
|
.endianness = DEVICE_BIG_ENDIAN,
|
|
.valid = {
|
|
.min_access_size = 8,
|
|
.max_access_size = 8,
|
|
},
|
|
.impl = {
|
|
.min_access_size = 8,
|
|
.max_access_size = 8,
|
|
}
|
|
};
|
|
|
|
static void pnv_psi_power9_irq_set(PnvPsi *psi, int irq, bool state)
|
|
{
|
|
uint64_t irq_method = psi->regs[PSIHB_REG(PSIHB9_INTERRUPT_CONTROL)];
|
|
|
|
if (irq > PSIHB9_NUM_IRQS) {
|
|
qemu_log_mask(LOG_GUEST_ERROR, "PSI: Unsupported irq %d\n", irq);
|
|
return;
|
|
}
|
|
|
|
if (irq_method & PSIHB9_IRQ_METHOD) {
|
|
qemu_log_mask(LOG_GUEST_ERROR, "PSI: LSI IRQ method no supported\n");
|
|
return;
|
|
}
|
|
|
|
/* Update LSI levels */
|
|
if (state) {
|
|
psi->regs[PSIHB_REG(PSIHB9_IRQ_LEVEL)] |= PPC_BIT(irq);
|
|
} else {
|
|
psi->regs[PSIHB_REG(PSIHB9_IRQ_LEVEL)] &= ~PPC_BIT(irq);
|
|
}
|
|
|
|
qemu_set_irq(psi->qirqs[irq], state);
|
|
}
|
|
|
|
static void pnv_psi_power9_reset(DeviceState *dev)
|
|
{
|
|
Pnv9Psi *psi = PNV9_PSI(dev);
|
|
|
|
pnv_psi_reset(dev);
|
|
|
|
if (memory_region_is_mapped(&psi->source.esb_mmio)) {
|
|
memory_region_del_subregion(get_system_memory(), &psi->source.esb_mmio);
|
|
}
|
|
}
|
|
|
|
static void pnv_psi_power9_instance_init(Object *obj)
|
|
{
|
|
Pnv9Psi *psi = PNV9_PSI(obj);
|
|
|
|
object_initialize_child(obj, "source", &psi->source, sizeof(psi->source),
|
|
TYPE_XIVE_SOURCE, &error_abort, NULL);
|
|
}
|
|
|
|
static void pnv_psi_power9_realize(DeviceState *dev, Error **errp)
|
|
{
|
|
PnvPsi *psi = PNV_PSI(dev);
|
|
XiveSource *xsrc = &PNV9_PSI(psi)->source;
|
|
Error *local_err = NULL;
|
|
int i;
|
|
|
|
/* This is the only device with 4k ESB pages */
|
|
object_property_set_int(OBJECT(xsrc), XIVE_ESB_4K, "shift",
|
|
&error_fatal);
|
|
object_property_set_int(OBJECT(xsrc), PSIHB9_NUM_IRQS, "nr-irqs",
|
|
&error_fatal);
|
|
object_property_set_link(OBJECT(xsrc), OBJECT(psi), "xive", &error_abort);
|
|
object_property_set_bool(OBJECT(xsrc), true, "realized", &local_err);
|
|
if (local_err) {
|
|
error_propagate(errp, local_err);
|
|
return;
|
|
}
|
|
|
|
for (i = 0; i < xsrc->nr_irqs; i++) {
|
|
xive_source_irq_set_lsi(xsrc, i);
|
|
}
|
|
|
|
psi->qirqs = qemu_allocate_irqs(xive_source_set_irq, xsrc, xsrc->nr_irqs);
|
|
|
|
/* XSCOM region for PSI registers */
|
|
pnv_xscom_region_init(&psi->xscom_regs, OBJECT(dev), &pnv_psi_p9_xscom_ops,
|
|
psi, "xscom-psi", PNV9_XSCOM_PSIHB_SIZE);
|
|
|
|
/* MMIO region for PSI registers */
|
|
memory_region_init_io(&psi->regs_mr, OBJECT(dev), &pnv_psi_p9_mmio_ops, psi,
|
|
"psihb", PNV9_PSIHB_SIZE);
|
|
|
|
pnv_psi_realize(dev, errp);
|
|
}
|
|
|
|
static void pnv_psi_power9_class_init(ObjectClass *klass, void *data)
|
|
{
|
|
DeviceClass *dc = DEVICE_CLASS(klass);
|
|
PnvPsiClass *ppc = PNV_PSI_CLASS(klass);
|
|
XiveNotifierClass *xfc = XIVE_NOTIFIER_CLASS(klass);
|
|
static const char compat[] = "ibm,power9-psihb-x\0ibm,psihb-x";
|
|
|
|
dc->desc = "PowerNV PSI Controller POWER9";
|
|
dc->realize = pnv_psi_power9_realize;
|
|
dc->reset = pnv_psi_power9_reset;
|
|
|
|
ppc->xscom_pcba = PNV9_XSCOM_PSIHB_BASE;
|
|
ppc->xscom_size = PNV9_XSCOM_PSIHB_SIZE;
|
|
ppc->bar_mask = PSIHB9_BAR_MASK;
|
|
ppc->irq_set = pnv_psi_power9_irq_set;
|
|
ppc->compat = compat;
|
|
ppc->compat_size = sizeof(compat);
|
|
|
|
xfc->notify = pnv_psi_notify;
|
|
}
|
|
|
|
static const TypeInfo pnv_psi_power9_info = {
|
|
.name = TYPE_PNV9_PSI,
|
|
.parent = TYPE_PNV_PSI,
|
|
.instance_size = sizeof(Pnv9Psi),
|
|
.instance_init = pnv_psi_power9_instance_init,
|
|
.class_init = pnv_psi_power9_class_init,
|
|
.interfaces = (InterfaceInfo[]) {
|
|
{ TYPE_XIVE_NOTIFIER },
|
|
{ },
|
|
},
|
|
};
|
|
|
|
static void pnv_psi_power10_class_init(ObjectClass *klass, void *data)
|
|
{
|
|
DeviceClass *dc = DEVICE_CLASS(klass);
|
|
PnvPsiClass *ppc = PNV_PSI_CLASS(klass);
|
|
static const char compat[] = "ibm,power10-psihb-x\0ibm,psihb-x";
|
|
|
|
dc->desc = "PowerNV PSI Controller POWER10";
|
|
|
|
ppc->xscom_pcba = PNV10_XSCOM_PSIHB_BASE;
|
|
ppc->xscom_size = PNV10_XSCOM_PSIHB_SIZE;
|
|
ppc->compat = compat;
|
|
ppc->compat_size = sizeof(compat);
|
|
}
|
|
|
|
static const TypeInfo pnv_psi_power10_info = {
|
|
.name = TYPE_PNV10_PSI,
|
|
.parent = TYPE_PNV9_PSI,
|
|
.class_init = pnv_psi_power10_class_init,
|
|
};
|
|
|
|
static void pnv_psi_class_init(ObjectClass *klass, void *data)
|
|
{
|
|
DeviceClass *dc = DEVICE_CLASS(klass);
|
|
PnvXScomInterfaceClass *xdc = PNV_XSCOM_INTERFACE_CLASS(klass);
|
|
|
|
xdc->dt_xscom = pnv_psi_dt_xscom;
|
|
|
|
dc->desc = "PowerNV PSI Controller";
|
|
device_class_set_props(dc, pnv_psi_properties);
|
|
dc->reset = pnv_psi_reset;
|
|
}
|
|
|
|
static const TypeInfo pnv_psi_info = {
|
|
.name = TYPE_PNV_PSI,
|
|
.parent = TYPE_DEVICE,
|
|
.instance_size = sizeof(PnvPsi),
|
|
.class_init = pnv_psi_class_init,
|
|
.class_size = sizeof(PnvPsiClass),
|
|
.abstract = true,
|
|
.interfaces = (InterfaceInfo[]) {
|
|
{ TYPE_PNV_XSCOM_INTERFACE },
|
|
{ }
|
|
}
|
|
};
|
|
|
|
static void pnv_psi_register_types(void)
|
|
{
|
|
type_register_static(&pnv_psi_info);
|
|
type_register_static(&pnv_psi_power8_info);
|
|
type_register_static(&pnv_psi_power9_info);
|
|
type_register_static(&pnv_psi_power10_info);
|
|
}
|
|
|
|
type_init(pnv_psi_register_types);
|
|
|
|
void pnv_psi_pic_print_info(Pnv9Psi *psi9, Monitor *mon)
|
|
{
|
|
PnvPsi *psi = PNV_PSI(psi9);
|
|
|
|
uint32_t offset =
|
|
(psi->regs[PSIHB_REG(PSIHB9_IVT_OFFSET)] >> PSIHB9_IVT_OFF_SHIFT);
|
|
|
|
monitor_printf(mon, "PSIHB Source %08x .. %08x\n",
|
|
offset, offset + psi9->source.nr_irqs - 1);
|
|
xive_source_pic_print_info(&psi9->source, offset, mon);
|
|
}
|