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qemu-patch-raspberry4/hw/s390x/s390-pci-inst.c
Yi Min Zhao 3be5c2078b s390x/pci: reject some operations to disabled PCI function 
According to the s390 architecture, any mpcifc, pcilg, pcistg,
pcistb and rpcit instructions issued to disabled PCI functions
are rejected, and the instruction completes by setting condition
code 3. In addition, any DMA and MSIX interruption operations
are ignored.

Signed-off-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-01-13 10:53:42 +01:00

844 lines
23 KiB
C
Raw Blame History

/*
* s390 PCI instructions
*
* Copyright 2014 IBM Corp.
* Author(s): Frank Blaschka <frank.blaschka@de.ibm.com>
* Hong Bo Li <lihbbj@cn.ibm.com>
* Yi Min Zhao <zyimin@cn.ibm.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or (at
* your option) any later version. See the COPYING file in the top-level
* directory.
*/
#include "s390-pci-inst.h"
#include "s390-pci-bus.h"
#include <exec/memory-internal.h>
#include <qemu/error-report.h>
/* #define DEBUG_S390PCI_INST */
#ifdef DEBUG_S390PCI_INST
#define DPRINTF(fmt, ...) \
do { fprintf(stderr, "s390pci-inst: " fmt, ## __VA_ARGS__); } while (0)
#else
#define DPRINTF(fmt, ...) \
do { } while (0)
#endif
static void s390_set_status_code(CPUS390XState *env,
uint8_t r, uint64_t status_code)
{
env->regs[r] &= ~0xff000000ULL;
env->regs[r] |= (status_code & 0xff) << 24;
}
static int list_pci(ClpReqRspListPci *rrb, uint8_t *cc)
{
S390PCIBusDevice *pbdev;
uint32_t res_code, initial_l2, g_l2, finish;
int rc, idx;
uint64_t resume_token;
rc = 0;
if (lduw_p(&rrb->request.hdr.len) != 32) {
res_code = CLP_RC_LEN;
rc = -EINVAL;
goto out;
}
if ((ldl_p(&rrb->request.fmt) & CLP_MASK_FMT) != 0) {
res_code = CLP_RC_FMT;
rc = -EINVAL;
goto out;
}
if ((ldl_p(&rrb->request.fmt) & ~CLP_MASK_FMT) != 0 ||
ldq_p(&rrb->request.reserved1) != 0 ||
ldq_p(&rrb->request.reserved2) != 0) {
res_code = CLP_RC_RESNOT0;
rc = -EINVAL;
goto out;
}
resume_token = ldq_p(&rrb->request.resume_token);
if (resume_token) {
pbdev = s390_pci_find_dev_by_idx(resume_token);
if (!pbdev) {
res_code = CLP_RC_LISTPCI_BADRT;
rc = -EINVAL;
goto out;
}
}
if (lduw_p(&rrb->response.hdr.len) < 48) {
res_code = CLP_RC_8K;
rc = -EINVAL;
goto out;
}
initial_l2 = lduw_p(&rrb->response.hdr.len);
if ((initial_l2 - LIST_PCI_HDR_LEN) % sizeof(ClpFhListEntry)
!= 0) {
res_code = CLP_RC_LEN;
rc = -EINVAL;
*cc = 3;
goto out;
}
stl_p(&rrb->response.fmt, 0);
stq_p(&rrb->response.reserved1, 0);
stq_p(&rrb->response.reserved2, 0);
stl_p(&rrb->response.mdd, FH_VIRT);
stw_p(&rrb->response.max_fn, PCI_MAX_FUNCTIONS);
rrb->response.entry_size = sizeof(ClpFhListEntry);
finish = 0;
idx = resume_token;
g_l2 = LIST_PCI_HDR_LEN;
do {
pbdev = s390_pci_find_dev_by_idx(idx);
if (!pbdev) {
finish = 1;
break;
}
stw_p(&rrb->response.fh_list[idx - resume_token].device_id,
pci_get_word(pbdev->pdev->config + PCI_DEVICE_ID));
stw_p(&rrb->response.fh_list[idx - resume_token].vendor_id,
pci_get_word(pbdev->pdev->config + PCI_VENDOR_ID));
stl_p(&rrb->response.fh_list[idx - resume_token].config, 0x80000000);
stl_p(&rrb->response.fh_list[idx - resume_token].fid, pbdev->fid);
stl_p(&rrb->response.fh_list[idx - resume_token].fh, pbdev->fh);
g_l2 += sizeof(ClpFhListEntry);
/* Add endian check for DPRINTF? */
DPRINTF("g_l2 %d vendor id 0x%x device id 0x%x fid 0x%x fh 0x%x\n",
g_l2,
lduw_p(&rrb->response.fh_list[idx - resume_token].vendor_id),
lduw_p(&rrb->response.fh_list[idx - resume_token].device_id),
ldl_p(&rrb->response.fh_list[idx - resume_token].fid),
ldl_p(&rrb->response.fh_list[idx - resume_token].fh));
idx++;
} while (g_l2 < initial_l2);
if (finish == 1) {
resume_token = 0;
} else {
resume_token = idx;
}
stq_p(&rrb->response.resume_token, resume_token);
stw_p(&rrb->response.hdr.len, g_l2);
stw_p(&rrb->response.hdr.rsp, CLP_RC_OK);
out:
if (rc) {
DPRINTF("list pci failed rc 0x%x\n", rc);
stw_p(&rrb->response.hdr.rsp, res_code);
}
return rc;
}
int clp_service_call(S390CPU *cpu, uint8_t r2)
{
ClpReqHdr *reqh;
ClpRspHdr *resh;
S390PCIBusDevice *pbdev;
uint32_t req_len;
uint32_t res_len;
uint8_t buffer[4096 * 2];
uint8_t cc = 0;
CPUS390XState *env = &cpu->env;
int i;
cpu_synchronize_state(CPU(cpu));
if (env->psw.mask & PSW_MASK_PSTATE) {
program_interrupt(env, PGM_PRIVILEGED, 4);
return 0;
}
if (s390_cpu_virt_mem_read(cpu, env->regs[r2], r2, buffer, sizeof(*reqh))) {
return 0;
}
reqh = (ClpReqHdr *)buffer;
req_len = lduw_p(&reqh->len);
if (req_len < 16 || req_len > 8184 || (req_len % 8 != 0)) {
program_interrupt(env, PGM_OPERAND, 4);
return 0;
}
if (s390_cpu_virt_mem_read(cpu, env->regs[r2], r2, buffer,
req_len + sizeof(*resh))) {
return 0;
}
resh = (ClpRspHdr *)(buffer + req_len);
res_len = lduw_p(&resh->len);
if (res_len < 8 || res_len > 8176 || (res_len % 8 != 0)) {
program_interrupt(env, PGM_OPERAND, 4);
return 0;
}
if ((req_len + res_len) > 8192) {
program_interrupt(env, PGM_OPERAND, 4);
return 0;
}
if (s390_cpu_virt_mem_read(cpu, env->regs[r2], r2, buffer,
req_len + res_len)) {
return 0;
}
if (req_len != 32) {
stw_p(&resh->rsp, CLP_RC_LEN);
goto out;
}
switch (lduw_p(&reqh->cmd)) {
case CLP_LIST_PCI: {
ClpReqRspListPci *rrb = (ClpReqRspListPci *)buffer;
list_pci(rrb, &cc);
break;
}
case CLP_SET_PCI_FN: {
ClpReqSetPci *reqsetpci = (ClpReqSetPci *)reqh;
ClpRspSetPci *ressetpci = (ClpRspSetPci *)resh;
pbdev = s390_pci_find_dev_by_fh(ldl_p(&reqsetpci->fh));
if (!pbdev) {
stw_p(&ressetpci->hdr.rsp, CLP_RC_SETPCIFN_FH);
goto out;
}
switch (reqsetpci->oc) {
case CLP_SET_ENABLE_PCI_FN:
pbdev->fh = pbdev->fh | 1 << ENABLE_BIT_OFFSET;
stl_p(&ressetpci->fh, pbdev->fh);
stw_p(&ressetpci->hdr.rsp, CLP_RC_OK);
break;
case CLP_SET_DISABLE_PCI_FN:
pbdev->fh = pbdev->fh & ~(1 << ENABLE_BIT_OFFSET);
pbdev->error_state = false;
pbdev->lgstg_blocked = false;
stl_p(&ressetpci->fh, pbdev->fh);
stw_p(&ressetpci->hdr.rsp, CLP_RC_OK);
break;
default:
DPRINTF("unknown set pci command\n");
stw_p(&ressetpci->hdr.rsp, CLP_RC_SETPCIFN_FHOP);
break;
}
break;
}
case CLP_QUERY_PCI_FN: {
ClpReqQueryPci *reqquery = (ClpReqQueryPci *)reqh;
ClpRspQueryPci *resquery = (ClpRspQueryPci *)resh;
pbdev = s390_pci_find_dev_by_fh(ldl_p(&reqquery->fh));
if (!pbdev) {
DPRINTF("query pci no pci dev\n");
stw_p(&resquery->hdr.rsp, CLP_RC_SETPCIFN_FH);
goto out;
}
for (i = 0; i < PCI_BAR_COUNT; i++) {
uint32_t data = pci_get_long(pbdev->pdev->config +
PCI_BASE_ADDRESS_0 + (i * 4));
stl_p(&resquery->bar[i], data);
resquery->bar_size[i] = pbdev->pdev->io_regions[i].size ?
ctz64(pbdev->pdev->io_regions[i].size) : 0;
DPRINTF("bar %d addr 0x%x size 0x%" PRIx64 "barsize 0x%x\n", i,
ldl_p(&resquery->bar[i]),
pbdev->pdev->io_regions[i].size,
resquery->bar_size[i]);
}
stq_p(&resquery->sdma, ZPCI_SDMA_ADDR);
stq_p(&resquery->edma, ZPCI_EDMA_ADDR);
stw_p(&resquery->pchid, 0);
stw_p(&resquery->ug, 1);
stl_p(&resquery->uid, pbdev->fid);
stw_p(&resquery->hdr.rsp, CLP_RC_OK);
break;
}
case CLP_QUERY_PCI_FNGRP: {
ClpRspQueryPciGrp *resgrp = (ClpRspQueryPciGrp *)resh;
resgrp->fr = 1;
stq_p(&resgrp->dasm, 0);
stq_p(&resgrp->msia, ZPCI_MSI_ADDR);
stw_p(&resgrp->mui, 0);
stw_p(&resgrp->i, 128);
resgrp->version = 0;
stw_p(&resgrp->hdr.rsp, CLP_RC_OK);
break;
}
default:
DPRINTF("unknown clp command\n");
stw_p(&resh->rsp, CLP_RC_CMD);
break;
}
out:
if (s390_cpu_virt_mem_write(cpu, env->regs[r2], r2, buffer,
req_len + res_len)) {
return 0;
}
setcc(cpu, cc);
return 0;
}
int pcilg_service_call(S390CPU *cpu, uint8_t r1, uint8_t r2)
{
CPUS390XState *env = &cpu->env;
S390PCIBusDevice *pbdev;
uint64_t offset;
uint64_t data;
uint8_t len;
uint32_t fh;
uint8_t pcias;
cpu_synchronize_state(CPU(cpu));
if (env->psw.mask & PSW_MASK_PSTATE) {
program_interrupt(env, PGM_PRIVILEGED, 4);
return 0;
}
if (r2 & 0x1) {
program_interrupt(env, PGM_SPECIFICATION, 4);
return 0;
}
fh = env->regs[r2] >> 32;
pcias = (env->regs[r2] >> 16) & 0xf;
len = env->regs[r2] & 0xf;
offset = env->regs[r2 + 1];
pbdev = s390_pci_find_dev_by_fh(fh);
if (!pbdev || !(pbdev->fh & FH_ENABLED)) {
DPRINTF("pcilg no pci dev\n");
setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
return 0;
}
if (pbdev->lgstg_blocked) {
setcc(cpu, ZPCI_PCI_LS_ERR);
s390_set_status_code(env, r2, ZPCI_PCI_ST_BLOCKED);
return 0;
}
if (pcias < 6) {
if ((8 - (offset & 0x7)) < len) {
program_interrupt(env, PGM_OPERAND, 4);
return 0;
}
MemoryRegion *mr = pbdev->pdev->io_regions[pcias].memory;
memory_region_dispatch_read(mr, offset, &data, len,
MEMTXATTRS_UNSPECIFIED);
} else if (pcias == 15) {
if ((4 - (offset & 0x3)) < len) {
program_interrupt(env, PGM_OPERAND, 4);
return 0;
}
data = pci_host_config_read_common(
pbdev->pdev, offset, pci_config_size(pbdev->pdev), len);
switch (len) {
case 1:
break;
case 2:
data = bswap16(data);
break;
case 4:
data = bswap32(data);
break;
case 8:
data = bswap64(data);
break;
default:
program_interrupt(env, PGM_OPERAND, 4);
return 0;
}
} else {
DPRINTF("invalid space\n");
setcc(cpu, ZPCI_PCI_LS_ERR);
s390_set_status_code(env, r2, ZPCI_PCI_ST_INVAL_AS);
return 0;
}
env->regs[r1] = data;
setcc(cpu, ZPCI_PCI_LS_OK);
return 0;
}
static void update_msix_table_msg_data(S390PCIBusDevice *pbdev, uint64_t offset,
uint64_t *data, uint8_t len)
{
uint32_t val;
uint8_t *msg_data;
if (offset % PCI_MSIX_ENTRY_SIZE != 8) {
return;
}
if (len != 4) {
DPRINTF("access msix table msg data but len is %d\n", len);
return;
}
msg_data = (uint8_t *)data - offset % PCI_MSIX_ENTRY_SIZE +
PCI_MSIX_ENTRY_VECTOR_CTRL;
val = pci_get_long(msg_data) | (pbdev->fid << ZPCI_MSI_VEC_BITS);
pci_set_long(msg_data, val);
DPRINTF("update msix msg_data to 0x%" PRIx64 "\n", *data);
}
static int trap_msix(S390PCIBusDevice *pbdev, uint64_t offset, uint8_t pcias)
{
if (pbdev->msix.available && pbdev->msix.table_bar == pcias &&
offset >= pbdev->msix.table_offset &&
offset <= pbdev->msix.table_offset +
(pbdev->msix.entries - 1) * PCI_MSIX_ENTRY_SIZE) {
return 1;
} else {
return 0;
}
}
int pcistg_service_call(S390CPU *cpu, uint8_t r1, uint8_t r2)
{
CPUS390XState *env = &cpu->env;
uint64_t offset, data;
S390PCIBusDevice *pbdev;
uint8_t len;
uint32_t fh;
uint8_t pcias;
cpu_synchronize_state(CPU(cpu));
if (env->psw.mask & PSW_MASK_PSTATE) {
program_interrupt(env, PGM_PRIVILEGED, 4);
return 0;
}
if (r2 & 0x1) {
program_interrupt(env, PGM_SPECIFICATION, 4);
return 0;
}
fh = env->regs[r2] >> 32;
pcias = (env->regs[r2] >> 16) & 0xf;
len = env->regs[r2] & 0xf;
offset = env->regs[r2 + 1];
pbdev = s390_pci_find_dev_by_fh(fh);
if (!pbdev || !(pbdev->fh & FH_ENABLED)) {
DPRINTF("pcistg no pci dev\n");
setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
return 0;
}
if (pbdev->lgstg_blocked) {
setcc(cpu, ZPCI_PCI_LS_ERR);
s390_set_status_code(env, r2, ZPCI_PCI_ST_BLOCKED);
return 0;
}
data = env->regs[r1];
if (pcias < 6) {
if ((8 - (offset & 0x7)) < len) {
program_interrupt(env, PGM_OPERAND, 4);
return 0;
}
MemoryRegion *mr;
if (trap_msix(pbdev, offset, pcias)) {
offset = offset - pbdev->msix.table_offset;
mr = &pbdev->pdev->msix_table_mmio;
update_msix_table_msg_data(pbdev, offset, &data, len);
} else {
mr = pbdev->pdev->io_regions[pcias].memory;
}
memory_region_dispatch_write(mr, offset, data, len,
MEMTXATTRS_UNSPECIFIED);
} else if (pcias == 15) {
if ((4 - (offset & 0x3)) < len) {
program_interrupt(env, PGM_OPERAND, 4);
return 0;
}
switch (len) {
case 1:
break;
case 2:
data = bswap16(data);
break;
case 4:
data = bswap32(data);
break;
case 8:
data = bswap64(data);
break;
default:
program_interrupt(env, PGM_OPERAND, 4);
return 0;
}
pci_host_config_write_common(pbdev->pdev, offset,
pci_config_size(pbdev->pdev),
data, len);
} else {
DPRINTF("pcistg invalid space\n");
setcc(cpu, ZPCI_PCI_LS_ERR);
s390_set_status_code(env, r2, ZPCI_PCI_ST_INVAL_AS);
return 0;
}
setcc(cpu, ZPCI_PCI_LS_OK);
return 0;
}
int rpcit_service_call(S390CPU *cpu, uint8_t r1, uint8_t r2)
{
CPUS390XState *env = &cpu->env;
uint32_t fh;
S390PCIBusDevice *pbdev;
hwaddr start, end;
IOMMUTLBEntry entry;
MemoryRegion *mr;
cpu_synchronize_state(CPU(cpu));
if (env->psw.mask & PSW_MASK_PSTATE) {
program_interrupt(env, PGM_PRIVILEGED, 4);
goto out;
}
if (r2 & 0x1) {
program_interrupt(env, PGM_SPECIFICATION, 4);
goto out;
}
fh = env->regs[r1] >> 32;
start = env->regs[r2];
end = start + env->regs[r2 + 1];
pbdev = s390_pci_find_dev_by_fh(fh);
if (!pbdev || !(pbdev->fh & FH_ENABLED)) {
DPRINTF("rpcit no pci dev\n");
setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
goto out;
}
mr = &pbdev->iommu_mr;
while (start < end) {
entry = mr->iommu_ops->translate(mr, start, 0);
if (!entry.translated_addr) {
setcc(cpu, ZPCI_PCI_LS_ERR);
goto out;
}
memory_region_notify_iommu(mr, entry);
start += entry.addr_mask + 1;
}
setcc(cpu, ZPCI_PCI_LS_OK);
out:
return 0;
}
int pcistb_service_call(S390CPU *cpu, uint8_t r1, uint8_t r3, uint64_t gaddr,
uint8_t ar)
{
CPUS390XState *env = &cpu->env;
S390PCIBusDevice *pbdev;
MemoryRegion *mr;
int i;
uint32_t fh;
uint8_t pcias;
uint8_t len;
uint8_t buffer[128];
if (env->psw.mask & PSW_MASK_PSTATE) {
program_interrupt(env, PGM_PRIVILEGED, 6);
return 0;
}
fh = env->regs[r1] >> 32;
pcias = (env->regs[r1] >> 16) & 0xf;
len = env->regs[r1] & 0xff;
if (pcias > 5) {
DPRINTF("pcistb invalid space\n");
setcc(cpu, ZPCI_PCI_LS_ERR);
s390_set_status_code(env, r1, ZPCI_PCI_ST_INVAL_AS);
return 0;
}
switch (len) {
case 16:
case 32:
case 64:
case 128:
break;
default:
program_interrupt(env, PGM_SPECIFICATION, 6);
return 0;
}
pbdev = s390_pci_find_dev_by_fh(fh);
if (!pbdev || !(pbdev->fh & FH_ENABLED)) {
DPRINTF("pcistb no pci dev fh 0x%x\n", fh);
setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
return 0;
}
if (pbdev->lgstg_blocked) {
setcc(cpu, ZPCI_PCI_LS_ERR);
s390_set_status_code(env, r1, ZPCI_PCI_ST_BLOCKED);
return 0;
}
mr = pbdev->pdev->io_regions[pcias].memory;
if (!memory_region_access_valid(mr, env->regs[r3], len, true)) {
program_interrupt(env, PGM_ADDRESSING, 6);
return 0;
}
if (s390_cpu_virt_mem_read(cpu, gaddr, ar, buffer, len)) {
return 0;
}
for (i = 0; i < len / 8; i++) {
memory_region_dispatch_write(mr, env->regs[r3] + i * 8,
ldq_p(buffer + i * 8), 8,
MEMTXATTRS_UNSPECIFIED);
}
setcc(cpu, ZPCI_PCI_LS_OK);
return 0;
}
static int reg_irqs(CPUS390XState *env, S390PCIBusDevice *pbdev, ZpciFib fib)
{
int ret;
S390FLICState *fs = s390_get_flic();
S390FLICStateClass *fsc = S390_FLIC_COMMON_GET_CLASS(fs);
ret = css_register_io_adapter(S390_PCIPT_ADAPTER,
FIB_DATA_ISC(ldl_p(&fib.data)), true, false,
&pbdev->routes.adapter.adapter_id);
assert(ret == 0);
fsc->io_adapter_map(fs, pbdev->routes.adapter.adapter_id,
ldq_p(&fib.aisb), true);
fsc->io_adapter_map(fs, pbdev->routes.adapter.adapter_id,
ldq_p(&fib.aibv), true);
pbdev->routes.adapter.summary_addr = ldq_p(&fib.aisb);
pbdev->routes.adapter.summary_offset = FIB_DATA_AISBO(ldl_p(&fib.data));
pbdev->routes.adapter.ind_addr = ldq_p(&fib.aibv);
pbdev->routes.adapter.ind_offset = FIB_DATA_AIBVO(ldl_p(&fib.data));
pbdev->isc = FIB_DATA_ISC(ldl_p(&fib.data));
pbdev->noi = FIB_DATA_NOI(ldl_p(&fib.data));
pbdev->sum = FIB_DATA_SUM(ldl_p(&fib.data));
DPRINTF("reg_irqs adapter id %d\n", pbdev->routes.adapter.adapter_id);
return 0;
}
static int dereg_irqs(S390PCIBusDevice *pbdev)
{
S390FLICState *fs = s390_get_flic();
S390FLICStateClass *fsc = S390_FLIC_COMMON_GET_CLASS(fs);
fsc->io_adapter_map(fs, pbdev->routes.adapter.adapter_id,
pbdev->routes.adapter.ind_addr, false);
pbdev->routes.adapter.summary_addr = 0;
pbdev->routes.adapter.summary_offset = 0;
pbdev->routes.adapter.ind_addr = 0;
pbdev->routes.adapter.ind_offset = 0;
pbdev->isc = 0;
pbdev->noi = 0;
pbdev->sum = 0;
DPRINTF("dereg_irqs adapter id %d\n", pbdev->routes.adapter.adapter_id);
return 0;
}
static int reg_ioat(CPUS390XState *env, S390PCIBusDevice *pbdev, ZpciFib fib)
{
uint64_t pba = ldq_p(&fib.pba);
uint64_t pal = ldq_p(&fib.pal);
uint64_t g_iota = ldq_p(&fib.iota);
uint8_t dt = (g_iota >> 2) & 0x7;
uint8_t t = (g_iota >> 11) & 0x1;
if (pba > pal || pba < ZPCI_SDMA_ADDR || pal > ZPCI_EDMA_ADDR) {
program_interrupt(env, PGM_OPERAND, 6);
return -EINVAL;
}
/* currently we only support designation type 1 with translation */
if (!(dt == ZPCI_IOTA_RTTO && t)) {
error_report("unsupported ioat dt %d t %d", dt, t);
program_interrupt(env, PGM_OPERAND, 6);
return -EINVAL;
}
pbdev->pba = pba;
pbdev->pal = pal;
pbdev->g_iota = g_iota;
s390_pcihost_iommu_configure(pbdev, true);
return 0;
}
static void dereg_ioat(S390PCIBusDevice *pbdev)
{
pbdev->pba = 0;
pbdev->pal = 0;
pbdev->g_iota = 0;
s390_pcihost_iommu_configure(pbdev, false);
}
int mpcifc_service_call(S390CPU *cpu, uint8_t r1, uint64_t fiba, uint8_t ar)
{
CPUS390XState *env = &cpu->env;
uint8_t oc;
uint32_t fh;
ZpciFib fib;
S390PCIBusDevice *pbdev;
uint64_t cc = ZPCI_PCI_LS_OK;
if (env->psw.mask & PSW_MASK_PSTATE) {
program_interrupt(env, PGM_PRIVILEGED, 6);
return 0;
}
oc = env->regs[r1] & 0xff;
fh = env->regs[r1] >> 32;
if (fiba & 0x7) {
program_interrupt(env, PGM_SPECIFICATION, 6);
return 0;
}
pbdev = s390_pci_find_dev_by_fh(fh);
if (!pbdev || !(pbdev->fh & FH_ENABLED)) {
DPRINTF("mpcifc no pci dev fh 0x%x\n", fh);
setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
return 0;
}
if (s390_cpu_virt_mem_read(cpu, fiba, ar, (uint8_t *)&fib, sizeof(fib))) {
return 0;
}
switch (oc) {
case ZPCI_MOD_FC_REG_INT:
if (reg_irqs(env, pbdev, fib)) {
cc = ZPCI_PCI_LS_ERR;
}
break;
case ZPCI_MOD_FC_DEREG_INT:
dereg_irqs(pbdev);
break;
case ZPCI_MOD_FC_REG_IOAT:
if (reg_ioat(env, pbdev, fib)) {
cc = ZPCI_PCI_LS_ERR;
}
break;
case ZPCI_MOD_FC_DEREG_IOAT:
dereg_ioat(pbdev);
break;
case ZPCI_MOD_FC_REREG_IOAT:
dereg_ioat(pbdev);
if (reg_ioat(env, pbdev, fib)) {
cc = ZPCI_PCI_LS_ERR;
}
break;
case ZPCI_MOD_FC_RESET_ERROR:
pbdev->error_state = false;
pbdev->lgstg_blocked = false;
break;
case ZPCI_MOD_FC_RESET_BLOCK:
pbdev->lgstg_blocked = false;
break;
case ZPCI_MOD_FC_SET_MEASURE:
pbdev->fmb_addr = ldq_p(&fib.fmb_addr);
break;
default:
program_interrupt(&cpu->env, PGM_OPERAND, 6);
cc = ZPCI_PCI_LS_ERR;
}
setcc(cpu, cc);
return 0;
}
int stpcifc_service_call(S390CPU *cpu, uint8_t r1, uint64_t fiba, uint8_t ar)
{
CPUS390XState *env = &cpu->env;
uint32_t fh;
ZpciFib fib;
S390PCIBusDevice *pbdev;
uint32_t data;
uint64_t cc = ZPCI_PCI_LS_OK;
if (env->psw.mask & PSW_MASK_PSTATE) {
program_interrupt(env, PGM_PRIVILEGED, 6);
return 0;
}
fh = env->regs[r1] >> 32;
if (fiba & 0x7) {
program_interrupt(env, PGM_SPECIFICATION, 6);
return 0;
}
pbdev = s390_pci_find_dev_by_fh(fh);
if (!pbdev) {
setcc(cpu, ZPCI_PCI_LS_INVAL_HANDLE);
return 0;
}
memset(&fib, 0, sizeof(fib));
stq_p(&fib.pba, pbdev->pba);
stq_p(&fib.pal, pbdev->pal);
stq_p(&fib.iota, pbdev->g_iota);
stq_p(&fib.aibv, pbdev->routes.adapter.ind_addr);
stq_p(&fib.aisb, pbdev->routes.adapter.summary_addr);
stq_p(&fib.fmb_addr, pbdev->fmb_addr);
data = ((uint32_t)pbdev->isc << 28) | ((uint32_t)pbdev->noi << 16) |
((uint32_t)pbdev->routes.adapter.ind_offset << 8) |
((uint32_t)pbdev->sum << 7) | pbdev->routes.adapter.summary_offset;
stl_p(&fib.data, data);
if (pbdev->fh >> ENABLE_BIT_OFFSET) {
fib.fc |= 0x80;
}
if (pbdev->error_state) {
fib.fc |= 0x40;
}
if (pbdev->lgstg_blocked) {
fib.fc |= 0x20;
}
if (pbdev->g_iota) {
fib.fc |= 0x10;
}
if (s390_cpu_virt_mem_write(cpu, fiba, ar, (uint8_t *)&fib, sizeof(fib))) {
return 0;
}
setcc(cpu, cc);
return 0;
}
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