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opal-prd.c
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opal-prd.c
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/* Copyright 2014-2015 IBM Corp.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
* implied.
* See the License for the specific language governing permissions and
* imitations under the License.
*/
#define _GNU_SOURCE
#include <assert.h>
#include <stdio.h>
#include <unistd.h>
#include <getopt.h>
#include <sys/mman.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#include <sys/stat.h>
#include <errno.h>
#include <stdbool.h>
#include <stdarg.h>
#include <time.h>
#include <poll.h>
#include <dirent.h>
#include <endian.h>
#include <sys/ioctl.h>
#include <sys/time.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <linux/ipmi.h>
#include <linux/limits.h>
#include <asm/opal-prd.h>
#include <opal-api.h>
#include <types.h>
#include "opal-prd.h"
#include "hostboot-interface.h"
#include "module.h"
#include "pnor.h"
#include "i2c.h"
struct prd_range {
const char *name;
uint64_t physaddr;
uint64_t size;
void *buf;
bool multiple;
uint32_t instance;
};
struct opal_prd_ctx {
int fd;
int socket;
struct opal_prd_info info;
struct prd_range *ranges;
int n_ranges;
bool fw_range_instances;
long page_size;
void *code_addr;
size_t code_size;
bool debug;
struct pnor pnor;
char *hbrt_file_name;
bool use_syslog;
bool expert_mode;
struct opal_prd_msg *msg;
size_t msg_alloc_len;
void (*vlog)(int, const char *, va_list);
};
enum control_msg_type {
CONTROL_MSG_ENABLE_OCCS = 0x00,
CONTROL_MSG_DISABLE_OCCS = 0x01,
CONTROL_MSG_TEMP_OCC_RESET = 0x02,
CONTROL_MSG_TEMP_OCC_ERROR = 0x03,
CONTROL_MSG_ATTR_OVERRIDE = 0x04,
CONTROL_MSG_HTMGT_PASSTHRU = 0x05,
CONTROL_MSG_RUN_CMD = 0x30,
};
struct control_msg {
enum control_msg_type type;
int response;
union {
struct {
unsigned int argc;
} run_cmd;
struct {
uint64_t chip;
} occ_reset;
struct {
uint64_t chip;
} occ_error;
};
unsigned int data_len;
unsigned char data[];
};
#define MAX_CONTROL_MSG_BUF 4096
static struct opal_prd_ctx *ctx;
static const char *opal_prd_devnode = "/dev/opal-prd";
static const char *opal_prd_socket = "/run/opal-prd-control";
static const char *hbrt_code_region_name = "ibm,hbrt-code-image";
static const int opal_prd_version = 1;
static uint64_t opal_prd_ipoll = 0xf000000000000000;
static const char *ipmi_devnode = "/dev/ipmi0";
static const int ipmi_timeout_ms = 5000;
static const char *devicetree_base =
"/sys/firmware/devicetree/base";
/* Memory error handling */
static const char *mem_offline_soft =
"/sys/devices/system/memory/soft_offline_page";
static const char *mem_offline_hard =
"/sys/devices/system/memory/hard_offline_page";
#define ADDR_STRING_SZ 20 /* Hold %16lx */
/* This is the "real" HBRT call table for calling into HBRT as
* provided by it. It will be used by the assembly thunk
*/
struct runtime_interfaces *hservice_runtime;
struct runtime_interfaces hservice_runtime_fixed;
/* This is the callback table provided by assembly code */
extern struct host_interfaces hinterface;
/* Create opd to call hostservice init */
struct func_desc {
void *addr;
void *toc;
} hbrt_entry;
static struct prd_range *find_range(const char *name, uint32_t instance)
{
struct prd_range *range;
unsigned int i;
for (i = 0; i < ctx->n_ranges; i++) {
range = &ctx->ranges[i];
if (strcmp(range->name, name))
continue;
if (range->multiple && range->instance != instance)
continue;
return range;
}
return NULL;
}
static void pr_log_stdio(int priority, const char *fmt, va_list ap)
{
if (!ctx->debug && priority >= LOG_DEBUG)
return;
vprintf(fmt, ap);
printf("\n");
}
/* standard logging prefixes:
* HBRT: Messages from hostboot runtime code
* FW: Interactions with OPAL firmware
* IMAGE: HBRT image loading
* MEM: Memory failure interface
* SCOM: Chip SCOM interface
* IPMI: IPMI interface
* PNOR: PNOR interface
* I2C: i2c interface
* OCC: OCC interface
* CTRL: User-triggered control events
* KMOD: Kernel module functions
*/
void pr_log(int priority, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
ctx->vlog(priority, fmt, ap);
va_end(ap);
}
static void pr_log_nocall(const char *name)
{
pr_log(LOG_WARNING, "HBRT: Call %s not provided", name);
}
static void hexdump(const uint8_t *data, uint32_t len)
{
int i;
for (i = 0; i < len; i++) {
if (i % 16 == 0)
printf("\n");
else if(i % 4 == 0)
printf(" ");
printf("%02x", data[i]);
}
printf("\n");
}
static void pr_log_daemon_init(void)
{
if (ctx->use_syslog) {
openlog("opal-prd", LOG_NDELAY, LOG_DAEMON);
ctx->vlog = vsyslog;
}
}
/**
* ABI check that we can't perform at build-time: we want to ensure that the
* layout of struct host_interfaces matches that defined in the thunk.
*/
static void check_abi(void)
{
extern unsigned char __hinterface_start, __hinterface_pad,
__hinterface_end;
/* ensure our struct size matches the thunk definition */
assert((&__hinterface_end - &__hinterface_start)
== sizeof(struct host_interfaces));
/* ensure the padding layout is as expected */
assert((void *)&__hinterface_start == (void *)&hinterface);
assert((void *)&__hinterface_pad == (void *)&hinterface.reserved);
}
/* HBRT init wrappers */
extern struct runtime_interfaces *call_hbrt_init(struct host_interfaces *);
/* hservice Call wrappers */
extern void call_cxxtestExecute(void *);
extern int call_handle_attns(uint64_t i_proc,
uint64_t i_ipollStatus,
uint64_t i_ipollMask);
extern void call_process_occ_error (uint64_t i_chipId);
extern int call_enable_attns(void);
extern int call_enable_occ_actuation(bool i_occActivation);
extern void call_process_occ_reset(uint64_t i_chipId);
extern int call_mfg_htmgt_pass_thru(uint16_t i_cmdLength, uint8_t *i_cmdData,
uint16_t *o_rspLength, uint8_t *o_rspData);
extern int call_apply_attr_override(uint8_t *i_data, size_t size);
extern int call_run_command(int argc, const char **argv, char **o_outString);
extern uint64_t call_get_ipoll_events(void);
void hservice_puts(const char *str)
{
int priority = LOG_INFO;
/* Interpret the 2-character ERR_MRK/FAIL_MRK/WARN_MRK prefixes that
* may be present on HBRT log messages, and bump the log priority as
* appropriate.
*/
if (strlen(str) >= 2 && str[1] == '>') {
switch (str[0]) {
case 'E':
case 'F':
priority = LOG_ERR;
break;
case 'W':
priority = LOG_WARNING;
break;
}
}
pr_log(priority, "HBRT: %s", str);
}
void hservice_assert(void)
{
pr_log(LOG_ERR, "HBRT: Failed assertion! exiting.");
exit(EXIT_FAILURE);
}
void *hservice_malloc(size_t size)
{
return malloc(size);
}
void hservice_free(void *ptr)
{
free(ptr);
}
void *hservice_realloc(void *ptr, size_t size)
{
return realloc(ptr, size);
}
int hservice_scom_read(uint64_t chip_id, uint64_t addr, void *buf)
{
int rc;
struct opal_prd_scom scom;
scom.chip = chip_id;
scom.addr = addr;
rc = ioctl(ctx->fd, OPAL_PRD_SCOM_READ, &scom);
if (rc) {
pr_log(LOG_ERR, "SCOM: ioctl read(chip 0x%lx, addr 0x%lx) "
"failed: %m", chip_id, addr);
return 0;
}
rc = (int)scom.rc;
pr_debug("SCOM: read: chip 0x%lx, addr 0x%lx, val 0x%lx, rc %d",
chip_id, addr, scom.data, rc);
*(uint64_t *)buf = htobe64(scom.data);
return rc;
}
int hservice_scom_write(uint64_t chip_id, uint64_t addr,
const void *buf)
{
int rc;
struct opal_prd_scom scom;
scom.chip = chip_id;
scom.addr = addr;
scom.data = be64toh(*(uint64_t *)buf);
rc = ioctl(ctx->fd, OPAL_PRD_SCOM_WRITE, &scom);
if (rc) {
pr_log(LOG_ERR, "SCOM: ioctl write(chip 0x%lx, addr 0x%lx) "
"failed: %m", chip_id, addr);
return 0;
}
rc = (int)scom.rc;
pr_debug("SCOM: write: chip 0x%lx, addr 0x%lx, val 0x%lx, rc %d",
chip_id, addr, scom.data, rc);
return rc;
}
uint64_t hservice_get_reserved_mem(const char *name, uint32_t instance)
{
struct prd_range *range;
pr_debug("IMAGE: hservice_get_reserved_mem: %s, %d", name, instance);
range = find_range(name, instance);
if (!range) {
pr_log(LOG_WARNING, "IMAGE: get_reserved_mem: "
"no such range %s", name);
return 0;
}
if (!range->buf) {
uint64_t align_physaddr, offset;
pr_debug("IMAGE: Mapping 0x%016lx 0x%08lx %s[%d]",
range->physaddr, range->size,
range->name, range->instance);
align_physaddr = range->physaddr & ~(ctx->page_size-1);
offset = range->physaddr & (ctx->page_size-1);
range->buf = mmap(NULL, range->size, PROT_WRITE | PROT_READ,
MAP_SHARED, ctx->fd, align_physaddr);
if (range->buf == MAP_FAILED)
pr_log(LOG_ERR,
"IMAGE: mmap of %s[%d](0x%016lx) failed: %m",
name, instance, range->physaddr);
else
range->buf += offset;
}
if (range->buf == MAP_FAILED) {
pr_log(LOG_WARNING,
"IMAGE: get_reserved_mem: %s[%d] has no vaddr",
name, instance);
return 0;
}
pr_debug(
"IMAGE: hservice_get_reserved_mem: %s[%d](0x%016lx) address %p",
name, range->instance, range->physaddr,
range->buf);
return (uint64_t)range->buf;
}
void hservice_nanosleep(uint64_t i_seconds, uint64_t i_nano_seconds)
{
const struct timespec ns = {
.tv_sec = i_seconds,
.tv_nsec = i_nano_seconds
};
nanosleep(&ns, NULL);
}
int hservice_set_page_execute(void *addr)
{
/* HBRT calls this on the pages that are already being executed,
* nothing to do here */
return -1;
}
int hservice_clock_gettime(clockid_t i_clkId, struct timespec *o_tp)
{
struct timespec tmp;
int rc;
rc = clock_gettime(i_clkId, &tmp);
if (rc)
return rc;
o_tp->tv_sec = htobe64(tmp.tv_sec);
o_tp->tv_nsec = htobe64(tmp.tv_nsec);
return 0;
}
int hservice_pnor_read(uint32_t i_proc, const char* i_partitionName,
uint64_t i_offset, void* o_data, size_t i_sizeBytes)
{
return pnor_operation(&ctx->pnor, i_partitionName, i_offset, o_data,
i_sizeBytes, PNOR_OP_READ);
}
int hservice_pnor_write(uint32_t i_proc, const char* i_partitionName,
uint64_t i_offset, void* o_data, size_t i_sizeBytes)
{
return pnor_operation(&ctx->pnor, i_partitionName, i_offset, o_data,
i_sizeBytes, PNOR_OP_WRITE);
}
int hservice_i2c_read(uint64_t i_master, uint16_t i_devAddr,
uint32_t i_offsetSize, uint32_t i_offset,
uint32_t i_length, void* o_data)
{
uint32_t chip_id;
uint8_t engine, port;
chip_id = (i_master & HBRT_I2C_MASTER_CHIP_MASK) >>
HBRT_I2C_MASTER_CHIP_SHIFT;
engine = (i_master & HBRT_I2C_MASTER_ENGINE_MASK) >>
HBRT_I2C_MASTER_ENGINE_SHIFT;
port = (i_master & HBRT_I2C_MASTER_PORT_MASK) >>
HBRT_I2C_MASTER_PORT_SHIFT;
return i2c_read(chip_id, engine, port, i_devAddr, i_offsetSize,
i_offset, i_length, o_data);
}
int hservice_i2c_write(uint64_t i_master, uint16_t i_devAddr,
uint32_t i_offsetSize, uint32_t i_offset,
uint32_t i_length, void* i_data)
{
uint32_t chip_id;
uint8_t engine, port;
chip_id = (i_master & HBRT_I2C_MASTER_CHIP_MASK) >>
HBRT_I2C_MASTER_CHIP_SHIFT;
engine = (i_master & HBRT_I2C_MASTER_ENGINE_MASK) >>
HBRT_I2C_MASTER_ENGINE_SHIFT;
port = (i_master & HBRT_I2C_MASTER_PORT_MASK) >>
HBRT_I2C_MASTER_PORT_SHIFT;
return i2c_write(chip_id, engine, port, i_devAddr, i_offsetSize,
i_offset, i_length, i_data);
}
static void ipmi_init(struct opal_prd_ctx *ctx)
{
insert_module("ipmi_devintf");
}
static int ipmi_send(int fd, uint8_t netfn, uint8_t cmd, long seq,
uint8_t *buf, size_t len)
{
struct ipmi_system_interface_addr addr;
struct ipmi_req req;
int rc;
memset(&addr, 0, sizeof(addr));
addr.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE;
addr.channel = IPMI_BMC_CHANNEL;
memset(&req, 0, sizeof(req));
req.addr = (unsigned char *)&addr;
req.addr_len = sizeof(addr);
req.msgid = seq;
req.msg.netfn = netfn;
req.msg.cmd = cmd;
req.msg.data = buf;
req.msg.data_len = len;
rc = ioctl(fd, IPMICTL_SEND_COMMAND, &req);
if (rc < 0)
return -1;
return 0;
}
static int ipmi_recv(int fd, uint8_t *netfn, uint8_t *cmd, long *seq,
uint8_t *buf, size_t *len)
{
struct ipmi_recv recv;
struct ipmi_addr addr;
int rc;
recv.addr = (unsigned char *)&addr;
recv.addr_len = sizeof(addr);
recv.msg.data = buf;
recv.msg.data_len = *len;
rc = ioctl(fd, IPMICTL_RECEIVE_MSG_TRUNC, &recv);
if (rc < 0 && errno != EMSGSIZE) {
pr_log(LOG_WARNING, "IPMI: recv (%zd bytes) failed: %m", *len);
return -1;
} else if (rc < 0 && errno == EMSGSIZE) {
pr_log(LOG_NOTICE, "IPMI: truncated message (netfn %d, cmd %d, "
"size %zd), continuing anyway",
recv.msg.netfn, recv.msg.cmd, *len);
}
*netfn = recv.msg.netfn;
*cmd = recv.msg.cmd;
*seq = recv.msgid;
*len = recv.msg.data_len;
return 0;
}
int hservice_ipmi_msg(uint8_t netfn, uint8_t cmd,
void *tx_buf, size_t tx_size,
void *rx_buf, size_t *rx_size)
{
struct timeval start, now, delta;
struct pollfd pollfds[1];
static long seq;
size_t size;
int rc, fd;
size = be64toh(*rx_size);
fd = open(ipmi_devnode, O_RDWR);
if (fd < 0) {
pr_log(LOG_WARNING, "IPMI: Failed to open IPMI device %s: %m",
ipmi_devnode);
return -1;
}
seq++;
pr_debug("IPMI: sending %zd bytes (netfn 0x%02x, cmd 0x%02x)",
tx_size, netfn, cmd);
rc = ipmi_send(fd, netfn, cmd, seq, tx_buf, tx_size);
if (rc) {
pr_log(LOG_WARNING, "IPMI: send failed");
goto out;
}
gettimeofday(&start, NULL);
pollfds[0].fd = fd;
pollfds[0].events = POLLIN;
for (;;) {
long rx_seq;
int timeout;
gettimeofday(&now, NULL);
timersub(&now, &start, &delta);
timeout = ipmi_timeout_ms - ((delta.tv_sec * 1000) +
(delta.tv_usec / 1000));
if (timeout < 0)
timeout = 0;
rc = poll(pollfds, 1, timeout);
if (rc < 0) {
pr_log(LOG_ERR, "IPMI: poll(%s) failed: %m",
ipmi_devnode);
break;
}
if (rc == 0) {
pr_log(LOG_WARNING, "IPMI: response timeout (>%dms)",
ipmi_timeout_ms);
rc = -1;
break;
}
rc = ipmi_recv(fd, &netfn, &cmd, &rx_seq, rx_buf, &size);
if (rc)
break;
if (seq != rx_seq) {
pr_log(LOG_NOTICE, "IPMI: out-of-sequence reply: %ld, "
"expected %ld. Dropping message.",
rx_seq, seq);
continue;
}
pr_debug("IPMI: received %zd bytes", tx_size);
*rx_size = be64toh(size);
rc = 0;
break;
}
out:
close(fd);
return rc;
}
int hservice_memory_error(uint64_t i_start_addr, uint64_t i_endAddr,
enum MemoryError_t i_errorType)
{
const char *sysfsfile, *typestr;
char buf[ADDR_STRING_SZ];
int memfd, rc, n;
uint64_t addr;
switch(i_errorType) {
case MEMORY_ERROR_CE:
sysfsfile = mem_offline_soft;
typestr = "correctable";
break;
case MEMORY_ERROR_UE:
sysfsfile = mem_offline_hard;
typestr = "uncorrectable";
break;
default:
pr_log(LOG_WARNING, "MEM: Invalid memory error type %d",
i_errorType);
return -1;
}
pr_log(LOG_ERR, "MEM: Memory error: range %016lx-%016lx, type: %s",
i_start_addr, i_endAddr, typestr);
memfd = open(sysfsfile, O_WRONLY);
if (memfd < 0) {
pr_log(LOG_CRIT, "MEM: Failed to offline memory! "
"Unable to open sysfs node %s: %m", sysfsfile);
return -1;
}
for (addr = i_start_addr; addr <= i_endAddr; addr += ctx->page_size) {
n = snprintf(buf, ADDR_STRING_SZ, "0x%lx", addr);
rc = write(memfd, buf, n);
if (rc != n) {
pr_log(LOG_CRIT, "MEM: Failed to offline memory! "
"page addr: %016lx type: %d: %m",
addr, i_errorType);
return rc;
}
}
return 0;
}
uint64_t hservice_get_interface_capabilities(uint64_t set)
{
if (set == HBRT_CAPS_SET1_OPAL)
return HBRT_CAPS_OPAL_HAS_XSCOM_RC;
return 0;
}
int hservices_init(struct opal_prd_ctx *ctx, void *code)
{
uint64_t *s, *d;
int i, sz;
pr_debug("IMAGE: code address: %p", code);
/* We enter at 0x100 into the image. */
/* Load func desc in BE since we reverse it in thunk */
hbrt_entry.addr = (void *)htobe64((unsigned long)code + 0x100);
hbrt_entry.toc = 0; /* No toc for init entry point */
if (memcmp(code, "HBRTVERS", 8) != 0) {
pr_log(LOG_ERR, "IMAGE: Bad signature for "
"ibm,hbrt-code-image! exiting");
return -1;
}
pr_debug("IMAGE: calling ibm,hbrt_init()");
hservice_runtime = call_hbrt_init(&hinterface);
if (!hservice_runtime) {
pr_log(LOG_ERR, "IMAGE: hbrt_init failed, exiting");
return -1;
}
pr_log(LOG_NOTICE, "IMAGE: hbrt_init complete, version %016lx",
hservice_runtime->interface_version);
sz = sizeof(struct runtime_interfaces)/sizeof(uint64_t);
s = (uint64_t *)hservice_runtime;
d = (uint64_t *)&hservice_runtime_fixed;
/* Byte swap the function pointers */
for (i = 0; i < sz; i++)
d[i] = be64toh(s[i]);
return 0;
}
static void fixup_hinterface_table(void)
{
uint64_t *t64;
unsigned int i, sz;
/* Swap interface version */
hinterface.interface_version =
htobe64(hinterface.interface_version);
/* Swap OPDs */
sz = sizeof(struct host_interfaces) / sizeof(uint64_t);
t64 = (uint64_t *)&hinterface;
for (i = 1; i < sz; i++) {
uint64_t *opd = (uint64_t *)t64[i];
if (!opd)
continue;
t64[i] = htobe64(t64[i]);
opd[0] = htobe64(opd[0]);
opd[1] = htobe64(opd[1]);
opd[2] = htobe64(opd[2]);
}
}
static int map_hbrt_file(struct opal_prd_ctx *ctx, const char *name)
{
struct stat statbuf;
int fd, rc;
void *buf;
fd = open(name, O_RDONLY);
if (fd < 0) {
pr_log(LOG_ERR, "IMAGE: HBRT file open(%s) failed: %m", name);
return -1;
}
rc = fstat(fd, &statbuf);
if (rc < 0) {
pr_log(LOG_ERR, "IMAGE: HBRT file fstat(%s) failed: %m", name);
close(fd);
return -1;
}
buf = mmap(NULL, statbuf.st_size, PROT_READ | PROT_WRITE | PROT_EXEC,
MAP_PRIVATE, fd, 0);
close(fd);
if (buf == MAP_FAILED) {
pr_log(LOG_ERR, "IMAGE: HBRT file mmap(%s, 0x%zx) failed: %m",
name, statbuf.st_size);
return -1;
}
ctx->code_addr = buf;
ctx->code_size = statbuf.st_size;
return -0;
}
static int map_hbrt_physmem(struct opal_prd_ctx *ctx, const char *name)
{
struct prd_range *range;
void *buf;
range = find_range(name, 0);
if (!range) {
pr_log(LOG_ERR, "IMAGE: can't find code region %s", name);
return -1;
}
buf = mmap(NULL, range->size, PROT_READ | PROT_WRITE | PROT_EXEC,
MAP_PRIVATE, ctx->fd, range->physaddr);
if (buf == MAP_FAILED) {
pr_log(LOG_ERR, "IMAGE: mmap(range:%s, "
"phys:0x%016lx, size:0x%016lx) failed: %m",
name, range->physaddr, range->size);
return -1;
}
ctx->code_addr = buf;
ctx->code_size = range->size;
return 0;
}
static void dump_hbrt_map(struct opal_prd_ctx *ctx)
{
const char *dump_name = "hbrt.bin";
int fd, rc;
if (!ctx->debug)
return;
fd = open(dump_name, O_WRONLY | O_CREAT, 0644);
if (fd < 0) {
pr_log(LOG_NOTICE, "IMAGE: couldn't debug image %s for writing",
dump_name);
return;
}
rc = ftruncate(fd, 0);
if (rc < 0) {
pr_log(LOG_NOTICE, "IMAGE: couldn't truncate image %s for writing",
dump_name);
return;
}
rc = write(fd, ctx->code_addr, ctx->code_size);
close(fd);
if (rc != ctx->code_size)
pr_log(LOG_NOTICE, "IMAGE: write to %s failed: %m", dump_name);
else
pr_debug("IMAGE: dumped HBRT binary to %s", dump_name);
}
static int open_and_read(const char *path, void **bufp, int *lenp)
{
struct stat statbuf;
int fd, rc, bytes;
void *buf;
fd = open(path, O_RDONLY);
if (fd < 0)
return -1;
rc = fstat(fd, &statbuf);
if (rc) {
close(fd);
return -1;
}
buf = malloc(statbuf.st_size);
for (rc = bytes = 0; bytes < statbuf.st_size; bytes += rc) {
rc = read(fd, buf + bytes, statbuf.st_size - bytes);
if (rc < 0) {
if (errno == EINTR)
continue;
break;
} else if (rc == 0)
break;
}
if (bytes == statbuf.st_size)
rc = 0;
if (rc == 0) {
if (lenp)
*lenp = bytes;
if (bufp)
*bufp = buf;
} else {
free(buf);
}
close(fd);
return rc == 0 ? 0 : -1;
}
static int prd_init_one_range(struct opal_prd_ctx *ctx, const char *path,
struct dirent *dirent)
{
char *label_path, *reg_path, *instance_path;
struct prd_range *range;
int label_len, len, rc;
__be64 *reg;
char *label;
void *buf;
rc = asprintf(&label_path, "%s/%s/ibm,prd-label", path, dirent->d_name);
if (rc < 0) {
pr_log(LOG_ERR, "FW: error creating 'ibm,prd-label' path "
"node: %m");
return -1;
}
rc = asprintf(&instance_path, "%s/%s/ibm,prd-instance",
path, dirent->d_name);
if (rc < 0) {
pr_log(LOG_ERR, "FW: error creating 'ibm,prd-instance' path "
"node: %m");
return -1;
}
rc = asprintf(®_path, "%s/%s/reg", path, dirent->d_name);
if (rc < 0) {
pr_log(LOG_ERR, "FW: error creating 'reg' path "
" node: %m");
return -1;
}
reg = NULL;
label = NULL;
rc = -1;
rc = open_and_read(label_path, &buf, &label_len);
if (rc)
goto out_free;
label = buf;
if (label[label_len-1] != '\0')
pr_log(LOG_INFO, "FW: node %s has invalid ibm,prd-label - "
"not nul-terminated",
dirent->d_name);
rc = open_and_read(reg_path, &buf, &len);
if (rc)
goto out_free;
reg = buf;
if (len != 2 * sizeof(*reg)) {
pr_log(LOG_ERR, "FW: node %s has invalid 'reg' size: %d",
dirent->d_name, len);
goto out_free;
}
ctx->ranges = realloc(ctx->ranges, ++ctx->n_ranges * sizeof(*range));
range = &ctx->ranges[ctx->n_ranges - 1];
range->name = strndup(label, label_len);
range->physaddr = be64toh(reg[0]);
range->size = be64toh(reg[1]);
range->buf = NULL;
range->multiple = false;
range->instance = 0;
/* optional instance */
rc = open_and_read(instance_path, &buf, &len);
if (!rc && len == sizeof(uint32_t)) {
range->multiple = true;
range->instance = be32toh(*(uint32_t *)buf);
ctx->fw_range_instances = true;
}
rc = 0;
out_free:
free(reg);
free(label);
free(instance_path);
free(reg_path);
free(label_path);
return rc;
}
static int compare_ranges(const void *ap, const void *bp)
{
const struct prd_range *a = ap, *b = bp;
int rc;
rc = strcmp(a->name, b->name);
if (rc)
return rc;
if (a->physaddr < b->physaddr)
return -1;
else if (a->physaddr > b->physaddr)
return 1;
return 0;
}
static void assign_range_instances(struct opal_prd_ctx *ctx)
{
int i;
if (!ctx->n_ranges)
return;
ctx->ranges[0].multiple = false;
ctx->ranges[0].instance = 0;