1185 lines
34 KiB
C
1185 lines
34 KiB
C
/*
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* QEMU PowerPC PowerNV (POWER8) PHB3 model
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*
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* Copyright (c) 2014-2020, IBM Corporation.
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*
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* This code is licensed under the GPL version 2 or later. See the
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* COPYING file in the top-level directory.
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*/
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#include "qemu/osdep.h"
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#include "qemu/log.h"
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#include "qapi/visitor.h"
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#include "qapi/error.h"
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#include "qemu-common.h"
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#include "hw/pci-host/pnv_phb3_regs.h"
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#include "hw/pci-host/pnv_phb3.h"
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#include "hw/pci/pcie_host.h"
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#include "hw/pci/pcie_port.h"
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#include "hw/ppc/pnv.h"
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#include "hw/irq.h"
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#include "hw/qdev-properties.h"
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#define phb3_error(phb, fmt, ...) \
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qemu_log_mask(LOG_GUEST_ERROR, "phb3[%d:%d]: " fmt "\n", \
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(phb)->chip_id, (phb)->phb_id, ## __VA_ARGS__)
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static PCIDevice *pnv_phb3_find_cfg_dev(PnvPHB3 *phb)
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{
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PCIHostState *pci = PCI_HOST_BRIDGE(phb);
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uint64_t addr = phb->regs[PHB_CONFIG_ADDRESS >> 3];
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uint8_t bus, devfn;
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if (!(addr >> 63)) {
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return NULL;
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}
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bus = (addr >> 52) & 0xff;
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devfn = (addr >> 44) & 0xff;
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return pci_find_device(pci->bus, bus, devfn);
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}
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/*
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* The CONFIG_DATA register expects little endian accesses, but as the
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* region is big endian, we have to swap the value.
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*/
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static void pnv_phb3_config_write(PnvPHB3 *phb, unsigned off,
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unsigned size, uint64_t val)
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{
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uint32_t cfg_addr, limit;
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PCIDevice *pdev;
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pdev = pnv_phb3_find_cfg_dev(phb);
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if (!pdev) {
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return;
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}
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cfg_addr = (phb->regs[PHB_CONFIG_ADDRESS >> 3] >> 32) & 0xffc;
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cfg_addr |= off;
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limit = pci_config_size(pdev);
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if (limit <= cfg_addr) {
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/*
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* conventional pci device can be behind pcie-to-pci bridge.
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* 256 <= addr < 4K has no effects.
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*/
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return;
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}
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switch (size) {
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case 1:
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break;
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case 2:
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val = bswap16(val);
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break;
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case 4:
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val = bswap32(val);
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break;
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default:
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g_assert_not_reached();
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}
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pci_host_config_write_common(pdev, cfg_addr, limit, val, size);
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}
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static uint64_t pnv_phb3_config_read(PnvPHB3 *phb, unsigned off,
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unsigned size)
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{
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uint32_t cfg_addr, limit;
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PCIDevice *pdev;
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uint64_t val;
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pdev = pnv_phb3_find_cfg_dev(phb);
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if (!pdev) {
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return ~0ull;
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}
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cfg_addr = (phb->regs[PHB_CONFIG_ADDRESS >> 3] >> 32) & 0xffc;
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cfg_addr |= off;
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limit = pci_config_size(pdev);
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if (limit <= cfg_addr) {
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/*
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* conventional pci device can be behind pcie-to-pci bridge.
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* 256 <= addr < 4K has no effects.
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*/
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return ~0ull;
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}
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val = pci_host_config_read_common(pdev, cfg_addr, limit, size);
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switch (size) {
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case 1:
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return val;
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case 2:
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return bswap16(val);
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case 4:
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return bswap32(val);
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default:
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g_assert_not_reached();
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}
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}
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static void pnv_phb3_check_m32(PnvPHB3 *phb)
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{
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uint64_t base, start, size;
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MemoryRegion *parent;
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PnvPBCQState *pbcq = &phb->pbcq;
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if (memory_region_is_mapped(&phb->mr_m32)) {
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memory_region_del_subregion(phb->mr_m32.container, &phb->mr_m32);
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}
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if (!(phb->regs[PHB_PHB3_CONFIG >> 3] & PHB_PHB3C_M32_EN)) {
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return;
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}
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/* Grab geometry from registers */
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base = phb->regs[PHB_M32_BASE_ADDR >> 3];
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start = phb->regs[PHB_M32_START_ADDR >> 3];
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size = ~(phb->regs[PHB_M32_BASE_MASK >> 3] | 0xfffc000000000000ull) + 1;
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/* Check if it matches an enabled MMIO region in the PBCQ */
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if (memory_region_is_mapped(&pbcq->mmbar0) &&
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base >= pbcq->mmio0_base &&
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(base + size) <= (pbcq->mmio0_base + pbcq->mmio0_size)) {
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parent = &pbcq->mmbar0;
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base -= pbcq->mmio0_base;
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} else if (memory_region_is_mapped(&pbcq->mmbar1) &&
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base >= pbcq->mmio1_base &&
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(base + size) <= (pbcq->mmio1_base + pbcq->mmio1_size)) {
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parent = &pbcq->mmbar1;
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base -= pbcq->mmio1_base;
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} else {
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return;
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}
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/* Create alias */
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memory_region_init_alias(&phb->mr_m32, OBJECT(phb), "phb3-m32",
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&phb->pci_mmio, start, size);
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memory_region_add_subregion(parent, base, &phb->mr_m32);
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}
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static void pnv_phb3_check_m64(PnvPHB3 *phb, uint32_t index)
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{
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uint64_t base, start, size, m64;
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MemoryRegion *parent;
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PnvPBCQState *pbcq = &phb->pbcq;
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if (memory_region_is_mapped(&phb->mr_m64[index])) {
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/* Should we destroy it in RCU friendly way... ? */
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memory_region_del_subregion(phb->mr_m64[index].container,
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&phb->mr_m64[index]);
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}
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/* Get table entry */
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m64 = phb->ioda_M64BT[index];
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if (!(m64 & IODA2_M64BT_ENABLE)) {
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return;
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}
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/* Grab geometry from registers */
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base = GETFIELD(IODA2_M64BT_BASE, m64) << 20;
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if (m64 & IODA2_M64BT_SINGLE_PE) {
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base &= ~0x1ffffffull;
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}
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size = GETFIELD(IODA2_M64BT_MASK, m64) << 20;
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size |= 0xfffc000000000000ull;
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size = ~size + 1;
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start = base | (phb->regs[PHB_M64_UPPER_BITS >> 3]);
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/* Check if it matches an enabled MMIO region in the PBCQ */
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if (memory_region_is_mapped(&pbcq->mmbar0) &&
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base >= pbcq->mmio0_base &&
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(base + size) <= (pbcq->mmio0_base + pbcq->mmio0_size)) {
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parent = &pbcq->mmbar0;
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base -= pbcq->mmio0_base;
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} else if (memory_region_is_mapped(&pbcq->mmbar1) &&
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base >= pbcq->mmio1_base &&
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(base + size) <= (pbcq->mmio1_base + pbcq->mmio1_size)) {
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parent = &pbcq->mmbar1;
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base -= pbcq->mmio1_base;
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} else {
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return;
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}
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/* Create alias */
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memory_region_init_alias(&phb->mr_m64[index], OBJECT(phb), "phb3-m64",
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&phb->pci_mmio, start, size);
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memory_region_add_subregion(parent, base, &phb->mr_m64[index]);
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}
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static void pnv_phb3_check_all_m64s(PnvPHB3 *phb)
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{
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uint64_t i;
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for (i = 0; i < PNV_PHB3_NUM_M64; i++) {
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pnv_phb3_check_m64(phb, i);
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}
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}
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static void pnv_phb3_lxivt_write(PnvPHB3 *phb, unsigned idx, uint64_t val)
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{
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uint8_t server, prio;
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phb->ioda_LXIVT[idx] = val & (IODA2_LXIVT_SERVER |
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IODA2_LXIVT_PRIORITY |
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IODA2_LXIVT_NODE_ID);
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server = GETFIELD(IODA2_LXIVT_SERVER, val);
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prio = GETFIELD(IODA2_LXIVT_PRIORITY, val);
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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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ics_write_xive(&phb->lsis, idx, server, prio, prio);
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}
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static uint64_t *pnv_phb3_ioda_access(PnvPHB3 *phb,
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unsigned *out_table, unsigned *out_idx)
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{
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uint64_t adreg = phb->regs[PHB_IODA_ADDR >> 3];
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unsigned int index = GETFIELD(PHB_IODA_AD_TADR, adreg);
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unsigned int table = GETFIELD(PHB_IODA_AD_TSEL, adreg);
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unsigned int mask;
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uint64_t *tptr = NULL;
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switch (table) {
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case IODA2_TBL_LIST:
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tptr = phb->ioda_LIST;
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mask = 7;
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break;
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case IODA2_TBL_LXIVT:
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tptr = phb->ioda_LXIVT;
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mask = 7;
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break;
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case IODA2_TBL_IVC_CAM:
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case IODA2_TBL_RBA:
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mask = 31;
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break;
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case IODA2_TBL_RCAM:
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mask = 63;
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break;
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case IODA2_TBL_MRT:
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mask = 7;
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break;
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case IODA2_TBL_PESTA:
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case IODA2_TBL_PESTB:
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mask = 255;
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break;
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case IODA2_TBL_TVT:
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tptr = phb->ioda_TVT;
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mask = 511;
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break;
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case IODA2_TBL_TCAM:
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case IODA2_TBL_TDR:
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mask = 63;
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break;
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case IODA2_TBL_M64BT:
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tptr = phb->ioda_M64BT;
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mask = 15;
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break;
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case IODA2_TBL_M32DT:
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tptr = phb->ioda_MDT;
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mask = 255;
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break;
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case IODA2_TBL_PEEV:
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tptr = phb->ioda_PEEV;
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mask = 3;
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break;
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default:
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phb3_error(phb, "invalid IODA table %d", table);
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return NULL;
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}
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index &= mask;
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if (out_idx) {
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*out_idx = index;
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}
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if (out_table) {
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*out_table = table;
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}
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if (tptr) {
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tptr += index;
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}
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if (adreg & PHB_IODA_AD_AUTOINC) {
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index = (index + 1) & mask;
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adreg = SETFIELD(PHB_IODA_AD_TADR, adreg, index);
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}
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phb->regs[PHB_IODA_ADDR >> 3] = adreg;
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return tptr;
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}
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static uint64_t pnv_phb3_ioda_read(PnvPHB3 *phb)
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{
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unsigned table;
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uint64_t *tptr;
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tptr = pnv_phb3_ioda_access(phb, &table, NULL);
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if (!tptr) {
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/* Return 0 on unsupported tables, not ff's */
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return 0;
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}
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return *tptr;
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}
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static void pnv_phb3_ioda_write(PnvPHB3 *phb, uint64_t val)
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{
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unsigned table, idx;
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uint64_t *tptr;
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tptr = pnv_phb3_ioda_access(phb, &table, &idx);
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if (!tptr) {
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return;
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}
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/* Handle side effects */
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switch (table) {
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case IODA2_TBL_LXIVT:
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pnv_phb3_lxivt_write(phb, idx, val);
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break;
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case IODA2_TBL_M64BT:
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*tptr = val;
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pnv_phb3_check_m64(phb, idx);
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break;
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default:
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*tptr = val;
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}
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}
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/*
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* This is called whenever the PHB LSI, MSI source ID register or
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* the PBCQ irq filters are written.
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*/
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void pnv_phb3_remap_irqs(PnvPHB3 *phb)
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{
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ICSState *ics = &phb->lsis;
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uint32_t local, global, count, mask, comp;
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uint64_t baren;
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PnvPBCQState *pbcq = &phb->pbcq;
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/*
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* First check if we are enabled. Unlike real HW we don't separate
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* TX and RX so we enable if both are set
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*/
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baren = pbcq->nest_regs[PBCQ_NEST_BAR_EN];
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if (!(baren & PBCQ_NEST_BAR_EN_IRSN_RX) ||
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!(baren & PBCQ_NEST_BAR_EN_IRSN_TX)) {
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ics->offset = 0;
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return;
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}
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/* Grab local LSI source ID */
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local = GETFIELD(PHB_LSI_SRC_ID, phb->regs[PHB_LSI_SOURCE_ID >> 3]) << 3;
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/* Grab global one and compare */
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global = GETFIELD(PBCQ_NEST_LSI_SRC,
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pbcq->nest_regs[PBCQ_NEST_LSI_SRC_ID]) << 3;
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if (global != local) {
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/*
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* This happens during initialization, let's come back when we
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* are properly configured
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*/
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ics->offset = 0;
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return;
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}
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/* Get the base on the powerbus */
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comp = GETFIELD(PBCQ_NEST_IRSN_COMP,
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pbcq->nest_regs[PBCQ_NEST_IRSN_COMPARE]);
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mask = GETFIELD(PBCQ_NEST_IRSN_COMP,
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pbcq->nest_regs[PBCQ_NEST_IRSN_MASK]);
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count = ((~mask) + 1) & 0x7ffff;
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phb->total_irq = count;
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/* Sanity checks */
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if ((global + PNV_PHB3_NUM_LSI) > count) {
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phb3_error(phb, "LSIs out of reach: LSI base=%d total irq=%d", global,
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count);
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}
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if (count > 2048) {
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phb3_error(phb, "More interrupts than supported: %d", count);
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}
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if ((comp & mask) != comp) {
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phb3_error(phb, "IRQ compare bits not in mask: comp=0x%x mask=0x%x",
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comp, mask);
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comp &= mask;
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}
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/* Setup LSI offset */
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ics->offset = comp + global;
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/* Setup MSI offset */
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pnv_phb3_msi_update_config(&phb->msis, comp, count - PNV_PHB3_NUM_LSI);
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}
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static void pnv_phb3_lsi_src_id_write(PnvPHB3 *phb, uint64_t val)
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{
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/* Sanitize content */
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val &= PHB_LSI_SRC_ID;
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phb->regs[PHB_LSI_SOURCE_ID >> 3] = val;
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pnv_phb3_remap_irqs(phb);
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}
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static void pnv_phb3_rtc_invalidate(PnvPHB3 *phb, uint64_t val)
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{
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PnvPhb3DMASpace *ds;
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/* Always invalidate all for now ... */
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QLIST_FOREACH(ds, &phb->dma_spaces, list) {
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ds->pe_num = PHB_INVALID_PE;
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}
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}
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static void pnv_phb3_update_msi_regions(PnvPhb3DMASpace *ds)
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{
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uint64_t cfg = ds->phb->regs[PHB_PHB3_CONFIG >> 3];
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if (cfg & PHB_PHB3C_32BIT_MSI_EN) {
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if (!memory_region_is_mapped(&ds->msi32_mr)) {
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memory_region_add_subregion(MEMORY_REGION(&ds->dma_mr),
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0xffff0000, &ds->msi32_mr);
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}
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} else {
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if (memory_region_is_mapped(&ds->msi32_mr)) {
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memory_region_del_subregion(MEMORY_REGION(&ds->dma_mr),
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&ds->msi32_mr);
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}
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}
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if (cfg & PHB_PHB3C_64BIT_MSI_EN) {
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if (!memory_region_is_mapped(&ds->msi64_mr)) {
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memory_region_add_subregion(MEMORY_REGION(&ds->dma_mr),
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(1ull << 60), &ds->msi64_mr);
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}
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} else {
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if (memory_region_is_mapped(&ds->msi64_mr)) {
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memory_region_del_subregion(MEMORY_REGION(&ds->dma_mr),
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&ds->msi64_mr);
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}
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}
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}
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static void pnv_phb3_update_all_msi_regions(PnvPHB3 *phb)
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{
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PnvPhb3DMASpace *ds;
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QLIST_FOREACH(ds, &phb->dma_spaces, list) {
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pnv_phb3_update_msi_regions(ds);
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}
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}
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void pnv_phb3_reg_write(void *opaque, hwaddr off, uint64_t val, unsigned size)
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{
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PnvPHB3 *phb = opaque;
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bool changed;
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/* Special case configuration data */
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if ((off & 0xfffc) == PHB_CONFIG_DATA) {
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pnv_phb3_config_write(phb, off & 0x3, size, val);
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return;
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}
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|
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/* Other registers are 64-bit only */
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if (size != 8 || off & 0x7) {
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phb3_error(phb, "Invalid register access, offset: 0x%"PRIx64" size: %d",
|
|
off, size);
|
|
return;
|
|
}
|
|
|
|
/* Handle masking & filtering */
|
|
switch (off) {
|
|
case PHB_M64_UPPER_BITS:
|
|
val &= 0xfffc000000000000ull;
|
|
break;
|
|
case PHB_Q_DMA_R:
|
|
/*
|
|
* This is enough logic to make SW happy but we aren't actually
|
|
* quiescing the DMAs
|
|
*/
|
|
if (val & PHB_Q_DMA_R_AUTORESET) {
|
|
val = 0;
|
|
} else {
|
|
val &= PHB_Q_DMA_R_QUIESCE_DMA;
|
|
}
|
|
break;
|
|
/* LEM stuff */
|
|
case PHB_LEM_FIR_AND_MASK:
|
|
phb->regs[PHB_LEM_FIR_ACCUM >> 3] &= val;
|
|
return;
|
|
case PHB_LEM_FIR_OR_MASK:
|
|
phb->regs[PHB_LEM_FIR_ACCUM >> 3] |= val;
|
|
return;
|
|
case PHB_LEM_ERROR_AND_MASK:
|
|
phb->regs[PHB_LEM_ERROR_MASK >> 3] &= val;
|
|
return;
|
|
case PHB_LEM_ERROR_OR_MASK:
|
|
phb->regs[PHB_LEM_ERROR_MASK >> 3] |= val;
|
|
return;
|
|
case PHB_LEM_WOF:
|
|
val = 0;
|
|
break;
|
|
}
|
|
|
|
/* Record whether it changed */
|
|
changed = phb->regs[off >> 3] != val;
|
|
|
|
/* Store in register cache first */
|
|
phb->regs[off >> 3] = val;
|
|
|
|
/* Handle side effects */
|
|
switch (off) {
|
|
case PHB_PHB3_CONFIG:
|
|
if (changed) {
|
|
pnv_phb3_update_all_msi_regions(phb);
|
|
}
|
|
/* fall through */
|
|
case PHB_M32_BASE_ADDR:
|
|
case PHB_M32_BASE_MASK:
|
|
case PHB_M32_START_ADDR:
|
|
if (changed) {
|
|
pnv_phb3_check_m32(phb);
|
|
}
|
|
break;
|
|
case PHB_M64_UPPER_BITS:
|
|
if (changed) {
|
|
pnv_phb3_check_all_m64s(phb);
|
|
}
|
|
break;
|
|
case PHB_LSI_SOURCE_ID:
|
|
if (changed) {
|
|
pnv_phb3_lsi_src_id_write(phb, val);
|
|
}
|
|
break;
|
|
|
|
/* IODA table accesses */
|
|
case PHB_IODA_DATA0:
|
|
pnv_phb3_ioda_write(phb, val);
|
|
break;
|
|
|
|
/* RTC invalidation */
|
|
case PHB_RTC_INVALIDATE:
|
|
pnv_phb3_rtc_invalidate(phb, val);
|
|
break;
|
|
|
|
/* FFI request */
|
|
case PHB_FFI_REQUEST:
|
|
pnv_phb3_msi_ffi(&phb->msis, val);
|
|
break;
|
|
|
|
/* Silent simple writes */
|
|
case PHB_CONFIG_ADDRESS:
|
|
case PHB_IODA_ADDR:
|
|
case PHB_TCE_KILL:
|
|
case PHB_TCE_SPEC_CTL:
|
|
case PHB_PEST_BAR:
|
|
case PHB_PELTV_BAR:
|
|
case PHB_RTT_BAR:
|
|
case PHB_RBA_BAR:
|
|
case PHB_IVT_BAR:
|
|
case PHB_FFI_LOCK:
|
|
case PHB_LEM_FIR_ACCUM:
|
|
case PHB_LEM_ERROR_MASK:
|
|
case PHB_LEM_ACTION0:
|
|
case PHB_LEM_ACTION1:
|
|
break;
|
|
|
|
/* Noise on anything else */
|
|
default:
|
|
qemu_log_mask(LOG_UNIMP, "phb3: reg_write 0x%"PRIx64"=%"PRIx64"\n",
|
|
off, val);
|
|
}
|
|
}
|
|
|
|
uint64_t pnv_phb3_reg_read(void *opaque, hwaddr off, unsigned size)
|
|
{
|
|
PnvPHB3 *phb = opaque;
|
|
PCIHostState *pci = PCI_HOST_BRIDGE(phb);
|
|
uint64_t val;
|
|
|
|
if ((off & 0xfffc) == PHB_CONFIG_DATA) {
|
|
return pnv_phb3_config_read(phb, off & 0x3, size);
|
|
}
|
|
|
|
/* Other registers are 64-bit only */
|
|
if (size != 8 || off & 0x7) {
|
|
phb3_error(phb, "Invalid register access, offset: 0x%"PRIx64" size: %d",
|
|
off, size);
|
|
return ~0ull;
|
|
}
|
|
|
|
/* Default read from cache */
|
|
val = phb->regs[off >> 3];
|
|
|
|
switch (off) {
|
|
/* Simulate venice DD2.0 */
|
|
case PHB_VERSION:
|
|
return 0x000000a300000005ull;
|
|
case PHB_PCIE_SYSTEM_CONFIG:
|
|
return 0x441100fc30000000;
|
|
|
|
/* IODA table accesses */
|
|
case PHB_IODA_DATA0:
|
|
return pnv_phb3_ioda_read(phb);
|
|
|
|
/* Link training always appears trained */
|
|
case PHB_PCIE_DLP_TRAIN_CTL:
|
|
if (!pci_find_device(pci->bus, 1, 0)) {
|
|
return 0;
|
|
}
|
|
return PHB_PCIE_DLP_INBAND_PRESENCE | PHB_PCIE_DLP_TC_DL_LINKACT;
|
|
|
|
/* FFI Lock */
|
|
case PHB_FFI_LOCK:
|
|
/* Set lock and return previous value */
|
|
phb->regs[off >> 3] |= PHB_FFI_LOCK_STATE;
|
|
return val;
|
|
|
|
/* DMA read sync: make it look like it's complete */
|
|
case PHB_DMARD_SYNC:
|
|
return PHB_DMARD_SYNC_COMPLETE;
|
|
|
|
/* Silent simple reads */
|
|
case PHB_PHB3_CONFIG:
|
|
case PHB_M32_BASE_ADDR:
|
|
case PHB_M32_BASE_MASK:
|
|
case PHB_M32_START_ADDR:
|
|
case PHB_CONFIG_ADDRESS:
|
|
case PHB_IODA_ADDR:
|
|
case PHB_RTC_INVALIDATE:
|
|
case PHB_TCE_KILL:
|
|
case PHB_TCE_SPEC_CTL:
|
|
case PHB_PEST_BAR:
|
|
case PHB_PELTV_BAR:
|
|
case PHB_RTT_BAR:
|
|
case PHB_RBA_BAR:
|
|
case PHB_IVT_BAR:
|
|
case PHB_M64_UPPER_BITS:
|
|
case PHB_LEM_FIR_ACCUM:
|
|
case PHB_LEM_ERROR_MASK:
|
|
case PHB_LEM_ACTION0:
|
|
case PHB_LEM_ACTION1:
|
|
break;
|
|
|
|
/* Noise on anything else */
|
|
default:
|
|
qemu_log_mask(LOG_UNIMP, "phb3: reg_read 0x%"PRIx64"=%"PRIx64"\n",
|
|
off, val);
|
|
}
|
|
return val;
|
|
}
|
|
|
|
static const MemoryRegionOps pnv_phb3_reg_ops = {
|
|
.read = pnv_phb3_reg_read,
|
|
.write = pnv_phb3_reg_write,
|
|
.valid.min_access_size = 1,
|
|
.valid.max_access_size = 8,
|
|
.impl.min_access_size = 1,
|
|
.impl.max_access_size = 8,
|
|
.endianness = DEVICE_BIG_ENDIAN,
|
|
};
|
|
|
|
static int pnv_phb3_map_irq(PCIDevice *pci_dev, int irq_num)
|
|
{
|
|
/* Check that out properly ... */
|
|
return irq_num & 3;
|
|
}
|
|
|
|
static void pnv_phb3_set_irq(void *opaque, int irq_num, int level)
|
|
{
|
|
PnvPHB3 *phb = opaque;
|
|
|
|
/* LSI only ... */
|
|
if (irq_num > 3) {
|
|
phb3_error(phb, "Unknown IRQ to set %d", irq_num);
|
|
}
|
|
qemu_set_irq(phb->qirqs[irq_num], level);
|
|
}
|
|
|
|
static bool pnv_phb3_resolve_pe(PnvPhb3DMASpace *ds)
|
|
{
|
|
uint64_t rtt, addr;
|
|
uint16_t rte;
|
|
int bus_num;
|
|
|
|
/* Already resolved ? */
|
|
if (ds->pe_num != PHB_INVALID_PE) {
|
|
return true;
|
|
}
|
|
|
|
/* We need to lookup the RTT */
|
|
rtt = ds->phb->regs[PHB_RTT_BAR >> 3];
|
|
if (!(rtt & PHB_RTT_BAR_ENABLE)) {
|
|
phb3_error(ds->phb, "DMA with RTT BAR disabled !");
|
|
/* Set error bits ? fence ? ... */
|
|
return false;
|
|
}
|
|
|
|
/* Read RTE */
|
|
bus_num = pci_bus_num(ds->bus);
|
|
addr = rtt & PHB_RTT_BASE_ADDRESS_MASK;
|
|
addr += 2 * ((bus_num << 8) | ds->devfn);
|
|
if (dma_memory_read(&address_space_memory, addr, &rte, sizeof(rte))) {
|
|
phb3_error(ds->phb, "Failed to read RTT entry at 0x%"PRIx64, addr);
|
|
/* Set error bits ? fence ? ... */
|
|
return false;
|
|
}
|
|
rte = be16_to_cpu(rte);
|
|
|
|
/* Fail upon reading of invalid PE# */
|
|
if (rte >= PNV_PHB3_NUM_PE) {
|
|
phb3_error(ds->phb, "RTE for RID 0x%x invalid (%04x", ds->devfn, rte);
|
|
/* Set error bits ? fence ? ... */
|
|
return false;
|
|
}
|
|
ds->pe_num = rte;
|
|
return true;
|
|
}
|
|
|
|
static void pnv_phb3_translate_tve(PnvPhb3DMASpace *ds, hwaddr addr,
|
|
bool is_write, uint64_t tve,
|
|
IOMMUTLBEntry *tlb)
|
|
{
|
|
uint64_t tta = GETFIELD(IODA2_TVT_TABLE_ADDR, tve);
|
|
int32_t lev = GETFIELD(IODA2_TVT_NUM_LEVELS, tve);
|
|
uint32_t tts = GETFIELD(IODA2_TVT_TCE_TABLE_SIZE, tve);
|
|
uint32_t tps = GETFIELD(IODA2_TVT_IO_PSIZE, tve);
|
|
PnvPHB3 *phb = ds->phb;
|
|
|
|
/* Invalid levels */
|
|
if (lev > 4) {
|
|
phb3_error(phb, "Invalid #levels in TVE %d", lev);
|
|
return;
|
|
}
|
|
|
|
/* IO Page Size of 0 means untranslated, else use TCEs */
|
|
if (tps == 0) {
|
|
/*
|
|
* We only support non-translate in top window.
|
|
*
|
|
* TODO: Venice/Murano support it on bottom window above 4G and
|
|
* Naples suports it on everything
|
|
*/
|
|
if (!(tve & PPC_BIT(51))) {
|
|
phb3_error(phb, "xlate for invalid non-translate TVE");
|
|
return;
|
|
}
|
|
/* TODO: Handle boundaries */
|
|
|
|
/* Use 4k pages like q35 ... for now */
|
|
tlb->iova = addr & 0xfffffffffffff000ull;
|
|
tlb->translated_addr = addr & 0x0003fffffffff000ull;
|
|
tlb->addr_mask = 0xfffull;
|
|
tlb->perm = IOMMU_RW;
|
|
} else {
|
|
uint32_t tce_shift, tbl_shift, sh;
|
|
uint64_t base, taddr, tce, tce_mask;
|
|
|
|
/* TVE disabled ? */
|
|
if (tts == 0) {
|
|
phb3_error(phb, "xlate for invalid translated TVE");
|
|
return;
|
|
}
|
|
|
|
/* Address bits per bottom level TCE entry */
|
|
tce_shift = tps + 11;
|
|
|
|
/* Address bits per table level */
|
|
tbl_shift = tts + 8;
|
|
|
|
/* Top level table base address */
|
|
base = tta << 12;
|
|
|
|
/* Total shift to first level */
|
|
sh = tbl_shift * lev + tce_shift;
|
|
|
|
/* TODO: Multi-level untested */
|
|
while ((lev--) >= 0) {
|
|
/* Grab the TCE address */
|
|
taddr = base | (((addr >> sh) & ((1ul << tbl_shift) - 1)) << 3);
|
|
if (dma_memory_read(&address_space_memory, taddr, &tce,
|
|
sizeof(tce))) {
|
|
phb3_error(phb, "Failed to read TCE at 0x%"PRIx64, taddr);
|
|
return;
|
|
}
|
|
tce = be64_to_cpu(tce);
|
|
|
|
/* Check permission for indirect TCE */
|
|
if ((lev >= 0) && !(tce & 3)) {
|
|
phb3_error(phb, "Invalid indirect TCE at 0x%"PRIx64, taddr);
|
|
phb3_error(phb, " xlate %"PRIx64":%c TVE=%"PRIx64, addr,
|
|
is_write ? 'W' : 'R', tve);
|
|
phb3_error(phb, " tta=%"PRIx64" lev=%d tts=%d tps=%d",
|
|
tta, lev, tts, tps);
|
|
return;
|
|
}
|
|
sh -= tbl_shift;
|
|
base = tce & ~0xfffull;
|
|
}
|
|
|
|
/* We exit the loop with TCE being the final TCE */
|
|
tce_mask = ~((1ull << tce_shift) - 1);
|
|
tlb->iova = addr & tce_mask;
|
|
tlb->translated_addr = tce & tce_mask;
|
|
tlb->addr_mask = ~tce_mask;
|
|
tlb->perm = tce & 3;
|
|
if ((is_write & !(tce & 2)) || ((!is_write) && !(tce & 1))) {
|
|
phb3_error(phb, "TCE access fault at 0x%"PRIx64, taddr);
|
|
phb3_error(phb, " xlate %"PRIx64":%c TVE=%"PRIx64, addr,
|
|
is_write ? 'W' : 'R', tve);
|
|
phb3_error(phb, " tta=%"PRIx64" lev=%d tts=%d tps=%d",
|
|
tta, lev, tts, tps);
|
|
}
|
|
}
|
|
}
|
|
|
|
static IOMMUTLBEntry pnv_phb3_translate_iommu(IOMMUMemoryRegion *iommu,
|
|
hwaddr addr,
|
|
IOMMUAccessFlags flag,
|
|
int iommu_idx)
|
|
{
|
|
PnvPhb3DMASpace *ds = container_of(iommu, PnvPhb3DMASpace, dma_mr);
|
|
int tve_sel;
|
|
uint64_t tve, cfg;
|
|
IOMMUTLBEntry ret = {
|
|
.target_as = &address_space_memory,
|
|
.iova = addr,
|
|
.translated_addr = 0,
|
|
.addr_mask = ~(hwaddr)0,
|
|
.perm = IOMMU_NONE,
|
|
};
|
|
PnvPHB3 *phb = ds->phb;
|
|
|
|
/* Resolve PE# */
|
|
if (!pnv_phb3_resolve_pe(ds)) {
|
|
phb3_error(phb, "Failed to resolve PE# for bus @%p (%d) devfn 0x%x",
|
|
ds->bus, pci_bus_num(ds->bus), ds->devfn);
|
|
return ret;
|
|
}
|
|
|
|
/* Check top bits */
|
|
switch (addr >> 60) {
|
|
case 00:
|
|
/* DMA or 32-bit MSI ? */
|
|
cfg = ds->phb->regs[PHB_PHB3_CONFIG >> 3];
|
|
if ((cfg & PHB_PHB3C_32BIT_MSI_EN) &&
|
|
((addr & 0xffffffffffff0000ull) == 0xffff0000ull)) {
|
|
phb3_error(phb, "xlate on 32-bit MSI region");
|
|
return ret;
|
|
}
|
|
/* Choose TVE XXX Use PHB3 Control Register */
|
|
tve_sel = (addr >> 59) & 1;
|
|
tve = ds->phb->ioda_TVT[ds->pe_num * 2 + tve_sel];
|
|
pnv_phb3_translate_tve(ds, addr, flag & IOMMU_WO, tve, &ret);
|
|
break;
|
|
case 01:
|
|
phb3_error(phb, "xlate on 64-bit MSI region");
|
|
break;
|
|
default:
|
|
phb3_error(phb, "xlate on unsupported address 0x%"PRIx64, addr);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
#define TYPE_PNV_PHB3_IOMMU_MEMORY_REGION "pnv-phb3-iommu-memory-region"
|
|
#define PNV_PHB3_IOMMU_MEMORY_REGION(obj) \
|
|
OBJECT_CHECK(IOMMUMemoryRegion, (obj), TYPE_PNV_PHB3_IOMMU_MEMORY_REGION)
|
|
|
|
static void pnv_phb3_iommu_memory_region_class_init(ObjectClass *klass,
|
|
void *data)
|
|
{
|
|
IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_CLASS(klass);
|
|
|
|
imrc->translate = pnv_phb3_translate_iommu;
|
|
}
|
|
|
|
static const TypeInfo pnv_phb3_iommu_memory_region_info = {
|
|
.parent = TYPE_IOMMU_MEMORY_REGION,
|
|
.name = TYPE_PNV_PHB3_IOMMU_MEMORY_REGION,
|
|
.class_init = pnv_phb3_iommu_memory_region_class_init,
|
|
};
|
|
|
|
/*
|
|
* MSI/MSIX memory region implementation.
|
|
* The handler handles both MSI and MSIX.
|
|
*/
|
|
static void pnv_phb3_msi_write(void *opaque, hwaddr addr,
|
|
uint64_t data, unsigned size)
|
|
{
|
|
PnvPhb3DMASpace *ds = opaque;
|
|
|
|
/* Resolve PE# */
|
|
if (!pnv_phb3_resolve_pe(ds)) {
|
|
phb3_error(ds->phb, "Failed to resolve PE# for bus @%p (%d) devfn 0x%x",
|
|
ds->bus, pci_bus_num(ds->bus), ds->devfn);
|
|
return;
|
|
}
|
|
|
|
pnv_phb3_msi_send(&ds->phb->msis, addr, data, ds->pe_num);
|
|
}
|
|
|
|
/* There is no .read as the read result is undefined by PCI spec */
|
|
static uint64_t pnv_phb3_msi_read(void *opaque, hwaddr addr, unsigned size)
|
|
{
|
|
PnvPhb3DMASpace *ds = opaque;
|
|
|
|
phb3_error(ds->phb, "invalid read @ 0x%" HWADDR_PRIx, addr);
|
|
return -1;
|
|
}
|
|
|
|
static const MemoryRegionOps pnv_phb3_msi_ops = {
|
|
.read = pnv_phb3_msi_read,
|
|
.write = pnv_phb3_msi_write,
|
|
.endianness = DEVICE_LITTLE_ENDIAN
|
|
};
|
|
|
|
static AddressSpace *pnv_phb3_dma_iommu(PCIBus *bus, void *opaque, int devfn)
|
|
{
|
|
PnvPHB3 *phb = opaque;
|
|
PnvPhb3DMASpace *ds;
|
|
|
|
QLIST_FOREACH(ds, &phb->dma_spaces, list) {
|
|
if (ds->bus == bus && ds->devfn == devfn) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (ds == NULL) {
|
|
ds = g_malloc0(sizeof(PnvPhb3DMASpace));
|
|
ds->bus = bus;
|
|
ds->devfn = devfn;
|
|
ds->pe_num = PHB_INVALID_PE;
|
|
ds->phb = phb;
|
|
memory_region_init_iommu(&ds->dma_mr, sizeof(ds->dma_mr),
|
|
TYPE_PNV_PHB3_IOMMU_MEMORY_REGION,
|
|
OBJECT(phb), "phb3_iommu", UINT64_MAX);
|
|
address_space_init(&ds->dma_as, MEMORY_REGION(&ds->dma_mr),
|
|
"phb3_iommu");
|
|
memory_region_init_io(&ds->msi32_mr, OBJECT(phb), &pnv_phb3_msi_ops,
|
|
ds, "msi32", 0x10000);
|
|
memory_region_init_io(&ds->msi64_mr, OBJECT(phb), &pnv_phb3_msi_ops,
|
|
ds, "msi64", 0x100000);
|
|
pnv_phb3_update_msi_regions(ds);
|
|
|
|
QLIST_INSERT_HEAD(&phb->dma_spaces, ds, list);
|
|
}
|
|
return &ds->dma_as;
|
|
}
|
|
|
|
static void pnv_phb3_instance_init(Object *obj)
|
|
{
|
|
PnvPHB3 *phb = PNV_PHB3(obj);
|
|
|
|
QLIST_INIT(&phb->dma_spaces);
|
|
|
|
/* LSI sources */
|
|
object_initialize_child(obj, "lsi", &phb->lsis, TYPE_ICS);
|
|
|
|
/* Default init ... will be fixed by HW inits */
|
|
phb->lsis.offset = 0;
|
|
|
|
/* MSI sources */
|
|
object_initialize_child(obj, "msi", &phb->msis, TYPE_PHB3_MSI);
|
|
|
|
/* Power Bus Common Queue */
|
|
object_initialize_child(obj, "pbcq", &phb->pbcq, TYPE_PNV_PBCQ);
|
|
|
|
/* Root Port */
|
|
object_initialize_child(obj, "root", &phb->root, TYPE_PNV_PHB3_ROOT_PORT);
|
|
qdev_prop_set_int32(DEVICE(&phb->root), "addr", PCI_DEVFN(0, 0));
|
|
qdev_prop_set_bit(DEVICE(&phb->root), "multifunction", false);
|
|
}
|
|
|
|
static void pnv_phb3_realize(DeviceState *dev, Error **errp)
|
|
{
|
|
PnvPHB3 *phb = PNV_PHB3(dev);
|
|
PCIHostState *pci = PCI_HOST_BRIDGE(dev);
|
|
PnvMachineState *pnv = PNV_MACHINE(qdev_get_machine());
|
|
int i;
|
|
|
|
if (phb->phb_id >= PNV8_CHIP_PHB3_MAX) {
|
|
error_setg(errp, "invalid PHB index: %d", phb->phb_id);
|
|
return;
|
|
}
|
|
|
|
/* LSI sources */
|
|
object_property_set_link(OBJECT(&phb->lsis), "xics", OBJECT(pnv),
|
|
&error_abort);
|
|
object_property_set_int(OBJECT(&phb->lsis), "nr-irqs", PNV_PHB3_NUM_LSI,
|
|
&error_abort);
|
|
if (!qdev_realize(DEVICE(&phb->lsis), NULL, errp)) {
|
|
return;
|
|
}
|
|
|
|
for (i = 0; i < phb->lsis.nr_irqs; i++) {
|
|
ics_set_irq_type(&phb->lsis, i, true);
|
|
}
|
|
|
|
phb->qirqs = qemu_allocate_irqs(ics_set_irq, &phb->lsis, phb->lsis.nr_irqs);
|
|
|
|
/* MSI sources */
|
|
object_property_set_link(OBJECT(&phb->msis), "phb", OBJECT(phb),
|
|
&error_abort);
|
|
object_property_set_link(OBJECT(&phb->msis), "xics", OBJECT(pnv),
|
|
&error_abort);
|
|
object_property_set_int(OBJECT(&phb->msis), "nr-irqs", PHB3_MAX_MSI,
|
|
&error_abort);
|
|
if (!qdev_realize(DEVICE(&phb->msis), NULL, errp)) {
|
|
return;
|
|
}
|
|
|
|
/* Power Bus Common Queue */
|
|
object_property_set_link(OBJECT(&phb->pbcq), "phb", OBJECT(phb),
|
|
&error_abort);
|
|
if (!qdev_realize(DEVICE(&phb->pbcq), NULL, errp)) {
|
|
return;
|
|
}
|
|
|
|
/* Controller Registers */
|
|
memory_region_init_io(&phb->mr_regs, OBJECT(phb), &pnv_phb3_reg_ops, phb,
|
|
"phb3-regs", 0x1000);
|
|
|
|
/*
|
|
* PHB3 doesn't support IO space. However, qemu gets very upset if
|
|
* we don't have an IO region to anchor IO BARs onto so we just
|
|
* initialize one which we never hook up to anything
|
|
*/
|
|
memory_region_init(&phb->pci_io, OBJECT(phb), "pci-io", 0x10000);
|
|
memory_region_init(&phb->pci_mmio, OBJECT(phb), "pci-mmio",
|
|
PCI_MMIO_TOTAL_SIZE);
|
|
|
|
pci->bus = pci_register_root_bus(dev, "root-bus",
|
|
pnv_phb3_set_irq, pnv_phb3_map_irq, phb,
|
|
&phb->pci_mmio, &phb->pci_io,
|
|
0, 4, TYPE_PNV_PHB3_ROOT_BUS);
|
|
|
|
pci_setup_iommu(pci->bus, pnv_phb3_dma_iommu, phb);
|
|
|
|
/* Add a single Root port */
|
|
qdev_prop_set_uint8(DEVICE(&phb->root), "chassis", phb->chip_id);
|
|
qdev_prop_set_uint16(DEVICE(&phb->root), "slot", phb->phb_id);
|
|
qdev_realize(DEVICE(&phb->root), BUS(pci->bus), &error_fatal);
|
|
}
|
|
|
|
void pnv_phb3_update_regions(PnvPHB3 *phb)
|
|
{
|
|
PnvPBCQState *pbcq = &phb->pbcq;
|
|
|
|
/* Unmap first always */
|
|
if (memory_region_is_mapped(&phb->mr_regs)) {
|
|
memory_region_del_subregion(&pbcq->phbbar, &phb->mr_regs);
|
|
}
|
|
|
|
/* Map registers if enabled */
|
|
if (memory_region_is_mapped(&pbcq->phbbar)) {
|
|
/* TODO: We should use the PHB BAR 2 register but we don't ... */
|
|
memory_region_add_subregion(&pbcq->phbbar, 0, &phb->mr_regs);
|
|
}
|
|
|
|
/* Check/update m32 */
|
|
if (memory_region_is_mapped(&phb->mr_m32)) {
|
|
pnv_phb3_check_m32(phb);
|
|
}
|
|
pnv_phb3_check_all_m64s(phb);
|
|
}
|
|
|
|
static const char *pnv_phb3_root_bus_path(PCIHostState *host_bridge,
|
|
PCIBus *rootbus)
|
|
{
|
|
PnvPHB3 *phb = PNV_PHB3(host_bridge);
|
|
|
|
snprintf(phb->bus_path, sizeof(phb->bus_path), "00%02x:%02x",
|
|
phb->chip_id, phb->phb_id);
|
|
return phb->bus_path;
|
|
}
|
|
|
|
static Property pnv_phb3_properties[] = {
|
|
DEFINE_PROP_UINT32("index", PnvPHB3, phb_id, 0),
|
|
DEFINE_PROP_UINT32("chip-id", PnvPHB3, chip_id, 0),
|
|
DEFINE_PROP_END_OF_LIST(),
|
|
};
|
|
|
|
static void pnv_phb3_class_init(ObjectClass *klass, void *data)
|
|
{
|
|
PCIHostBridgeClass *hc = PCI_HOST_BRIDGE_CLASS(klass);
|
|
DeviceClass *dc = DEVICE_CLASS(klass);
|
|
|
|
hc->root_bus_path = pnv_phb3_root_bus_path;
|
|
dc->realize = pnv_phb3_realize;
|
|
device_class_set_props(dc, pnv_phb3_properties);
|
|
set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
|
|
dc->user_creatable = false;
|
|
}
|
|
|
|
static const TypeInfo pnv_phb3_type_info = {
|
|
.name = TYPE_PNV_PHB3,
|
|
.parent = TYPE_PCIE_HOST_BRIDGE,
|
|
.instance_size = sizeof(PnvPHB3),
|
|
.class_init = pnv_phb3_class_init,
|
|
.instance_init = pnv_phb3_instance_init,
|
|
};
|
|
|
|
static void pnv_phb3_root_bus_class_init(ObjectClass *klass, void *data)
|
|
{
|
|
BusClass *k = BUS_CLASS(klass);
|
|
|
|
/*
|
|
* PHB3 has only a single root complex. Enforce the limit on the
|
|
* parent bus
|
|
*/
|
|
k->max_dev = 1;
|
|
}
|
|
|
|
static const TypeInfo pnv_phb3_root_bus_info = {
|
|
.name = TYPE_PNV_PHB3_ROOT_BUS,
|
|
.parent = TYPE_PCIE_BUS,
|
|
.class_init = pnv_phb3_root_bus_class_init,
|
|
.interfaces = (InterfaceInfo[]) {
|
|
{ INTERFACE_PCIE_DEVICE },
|
|
{ }
|
|
},
|
|
};
|
|
|
|
static void pnv_phb3_root_port_realize(DeviceState *dev, Error **errp)
|
|
{
|
|
PCIERootPortClass *rpc = PCIE_ROOT_PORT_GET_CLASS(dev);
|
|
Error *local_err = NULL;
|
|
|
|
rpc->parent_realize(dev, &local_err);
|
|
if (local_err) {
|
|
error_propagate(errp, local_err);
|
|
return;
|
|
}
|
|
}
|
|
|
|
static void pnv_phb3_root_port_class_init(ObjectClass *klass, void *data)
|
|
{
|
|
DeviceClass *dc = DEVICE_CLASS(klass);
|
|
PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
|
|
PCIERootPortClass *rpc = PCIE_ROOT_PORT_CLASS(klass);
|
|
|
|
dc->desc = "IBM PHB3 PCIE Root Port";
|
|
|
|
device_class_set_parent_realize(dc, pnv_phb3_root_port_realize,
|
|
&rpc->parent_realize);
|
|
dc->user_creatable = false;
|
|
|
|
k->vendor_id = PCI_VENDOR_ID_IBM;
|
|
k->device_id = 0x03dc;
|
|
k->revision = 0;
|
|
|
|
rpc->exp_offset = 0x48;
|
|
rpc->aer_offset = 0x100;
|
|
}
|
|
|
|
static const TypeInfo pnv_phb3_root_port_info = {
|
|
.name = TYPE_PNV_PHB3_ROOT_PORT,
|
|
.parent = TYPE_PCIE_ROOT_PORT,
|
|
.instance_size = sizeof(PnvPHB3RootPort),
|
|
.class_init = pnv_phb3_root_port_class_init,
|
|
};
|
|
|
|
static void pnv_phb3_register_types(void)
|
|
{
|
|
type_register_static(&pnv_phb3_root_bus_info);
|
|
type_register_static(&pnv_phb3_root_port_info);
|
|
type_register_static(&pnv_phb3_type_info);
|
|
type_register_static(&pnv_phb3_iommu_memory_region_info);
|
|
}
|
|
|
|
type_init(pnv_phb3_register_types)
|