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905c96e53220e5fe68fbafc2513538cf630b96e3
kernel_xiaomi_sm8250/drivers/char/adsprpc.c
Vamsi Krishna Gattupalli 905c96e532 msm: adsprpc: Fix for hyp_assign_phys double call 
A check is introduced to restrict  the double call of
hyp_assign_phys for the same address.

Change-Id: I0ac984af9fe456d317c7c2d99d6d1290f86830e8
Acked-by: Sandheep Balasubramanian <sandheep@qti.qualcomm.com>
Signed-off-by: Vamsi Krishna Gattupalli <quic_vgattupa@quicinc.com>
2022-08-16 03:06:16 -07:00

5543 lines
143 KiB
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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2012-2021, The Linux Foundation. All rights reserved.
*/
#include <linux/dma-buf.h>
#include <linux/dma-mapping.h>
#include <linux/slab.h>
#include <linux/completion.h>
#include <linux/pagemap.h>
#include <linux/mm.h>
#include <linux/sched.h>
#include <linux/module.h>
#include <linux/cdev.h>
#include <linux/list.h>
#include <linux/hash.h>
#include <linux/msm_ion.h>
#include <soc/qcom/secure_buffer.h>
#include <linux/rpmsg.h>
#include <linux/ipc_logging.h>
#include <soc/qcom/subsystem_notif.h>
#include <soc/qcom/subsystem_restart.h>
#include <soc/qcom/service-notifier.h>
#include <soc/qcom/service-locator.h>
#include <linux/scatterlist.h>
#include <linux/uaccess.h>
#include <linux/device.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_platform.h>
#include <linux/dma-contiguous.h>
#include <linux/cma.h>
#include <linux/iommu.h>
#include <linux/sort.h>
#include <linux/msm_dma_iommu_mapping.h>
#include "adsprpc_compat.h"
#include "adsprpc_shared.h"
#include <soc/qcom/ramdump.h>
#include <linux/delay.h>
#include <linux/debugfs.h>
#include <linux/pm_qos.h>
#include <linux/stat.h>
#include <linux/cpumask.h>
#define CREATE_TRACE_POINTS
#include <trace/events/fastrpc.h>
#define TZ_PIL_PROTECT_MEM_SUBSYS_ID 0x0C
#define TZ_PIL_CLEAR_PROTECT_MEM_SUBSYS_ID 0x0D
#define TZ_PIL_AUTH_QDSP6_PROC 1
#define ADSP_MMAP_HEAP_ADDR 4
#define ADSP_MMAP_REMOTE_HEAP_ADDR 8
#define ADSP_MMAP_ADD_PAGES 0x1000
#define ADSP_MMAP_ADD_PAGES_LLC 0x3000
#define FASTRPC_DMAHANDLE_NOMAP (16)
#define FASTRPC_ENOSUCH 39
#define VMID_SSC_Q6 5
#define VMID_ADSP_Q6 6
#define DEBUGFS_SIZE 3072
#define UL_SIZE 25
#define PID_SIZE 10
#define AUDIO_PDR_SERVICE_LOCATION_CLIENT_NAME "audio_pdr_adsprpc"
#define AUDIO_PDR_ADSP_SERVICE_NAME "avs/audio"
#define ADSP_AUDIOPD_NAME "msm/adsp/audio_pd"
#define SENSORS_PDR_ADSP_SERVICE_LOCATION_CLIENT_NAME "sensors_pdr_adsprpc"
#define SENSORS_PDR_ADSP_SERVICE_NAME "tms/servreg"
#define ADSP_SENSORPD_NAME "msm/adsp/sensor_pd"
#define SENSORS_PDR_SLPI_SERVICE_LOCATION_CLIENT_NAME "sensors_pdr_sdsprpc"
#define SENSORS_PDR_SLPI_SERVICE_NAME SENSORS_PDR_ADSP_SERVICE_NAME
#define SLPI_SENSORPD_NAME "msm/slpi/sensor_pd"
#define FASTRPC_SECURE_WAKE_SOURCE_CLIENT_NAME "adsprpc-secure"
#define FASTRPC_NON_SECURE_WAKE_SOURCE_CLIENT_NAME "adsprpc-non_secure"
#define RPC_TIMEOUT (5 * HZ)
#define BALIGN 128
#define NUM_CHANNELS 4 /* adsp, mdsp, slpi, cdsp*/
#define NUM_SESSIONS 9 /*8 compute, 1 cpz*/
#define M_FDLIST (16)
#define M_CRCLIST (64)
#define SESSION_ID_INDEX (30)
#define FASTRPC_CTX_MAGIC (0xbeeddeed)
#define FASTRPC_CTX_MAX (256)
#define FASTRPC_CTXID_MASK (0xFF0)
#define NUM_DEVICES 2 /* adsprpc-smd, adsprpc-smd-secure */
#define MINOR_NUM_DEV 0
#define MINOR_NUM_SECURE_DEV 1
#define NON_SECURE_CHANNEL 0
#define SECURE_CHANNEL 1
#define IS_CACHE_ALIGNED(x) (((x) & ((L1_CACHE_BYTES)-1)) == 0)
#ifndef ION_FLAG_CACHED
#define ION_FLAG_CACHED (1)
#endif
#define ADSP_DOMAIN_ID (0)
#define MDSP_DOMAIN_ID (1)
#define SDSP_DOMAIN_ID (2)
#define CDSP_DOMAIN_ID (3)
/* ctxid of every message is OR-ed with fl->pd (0/1/2) before */
/* it is sent to DSP. So mask 2 LSBs to retrieve actual context */
#define CONTEXT_PD_CHECK (3)
#define RH_CID ADSP_DOMAIN_ID
#define PERF_KEYS \
"count:flush:map:copy:rpmsg:getargs:putargs:invalidate:invoke"
#define FASTRPC_STATIC_HANDLE_PROCESS_GROUP (1)
#define FASTRPC_STATIC_HANDLE_DSP_UTILITIES (2)
#define FASTRPC_STATIC_HANDLE_LISTENER (3)
#define FASTRPC_STATIC_HANDLE_MAX (20)
#define FASTRPC_LATENCY_CTRL_ENB (1)
/* Maximum PM timeout that can be voted through fastrpc*/
#define MAX_PM_TIMEOUT_MS 50
/* timeout in us for busy polling after early response from remote processor */
#define FASTRPC_POLL_TIME (4000)
/* timeout in us for polling without preempt */
#define FASTRPC_POLL_TIME_WITHOUT_PREEMPT (500)
/* timeout in us for polling completion signal after user early hint */
#define FASTRPC_USER_EARLY_HINT_TIMEOUT (500)
/* Early wake up poll completion number received from remote processor */
#define FASTRPC_EARLY_WAKEUP_POLL (0xabbccdde)
/* latency in us, early wake up signal used below this value */
#define FASTRPC_EARLY_WAKEUP_LATENCY (200)
/* response version number */
#define FASTRPC_RSP_VERSION2 (2)
/* CPU feature information to DSP */
#define FASTRPC_CPUINFO_DEFAULT (0)
#define FASTRPC_CPUINFO_EARLY_WAKEUP (1)
#define INIT_FILELEN_MAX (2*1024*1024)
#define INIT_MEMLEN_MAX (8*1024*1024)
#define MAX_CACHE_BUF_SIZE (8*1024*1024)
#define PERF_END (void)0
#define PERF(enb, cnt, ff) \
{\
struct timespec64 startT = {0};\
int64_t *counter = cnt;\
if (enb && counter) {\
ktime_get_real_ts64(&startT);\
} \
ff ;\
if (enb && counter) {\
*counter += getnstimediff(&startT);\
} \
}
#define GET_COUNTER(perf_ptr, offset) \
(perf_ptr != NULL ?\
(((offset >= 0) && (offset < PERF_KEY_MAX)) ?\
(int64_t *)(perf_ptr + offset)\
: (int64_t *)NULL) : (int64_t *)NULL)
#define FASTRPC_GLINK_LOG_PAGES 8
#define LOG_FASTRPC_GLINK_MSG(ctx, x, ...) \
do { \
if (ctx) \
ipc_log_string(ctx, "%s (%d, %d): "x, \
current->comm, current->tgid, current->pid, \
##__VA_ARGS__); \
} while (0)
static int fastrpc_pdr_notifier_cb(struct notifier_block *nb,
unsigned long code,
void *data);
static struct dentry *debugfs_root;
static struct dentry *debugfs_global_file;
static inline void mem_barrier(void)
{
__asm__ __volatile__("dmb sy":::"memory");
}
static inline uint64_t buf_page_start(uint64_t buf)
{
uint64_t start = (uint64_t) buf & PAGE_MASK;
return start;
}
static inline uint64_t buf_page_offset(uint64_t buf)
{
uint64_t offset = (uint64_t) buf & (PAGE_SIZE - 1);
return offset;
}
static inline uint64_t buf_num_pages(uint64_t buf, size_t len)
{
uint64_t start = buf_page_start(buf) >> PAGE_SHIFT;
uint64_t end = (((uint64_t) buf + len - 1) & PAGE_MASK) >> PAGE_SHIFT;
uint64_t nPages = end - start + 1;
return nPages;
}
static inline uint64_t buf_page_size(uint32_t size)
{
uint64_t sz = (size + (PAGE_SIZE - 1)) & PAGE_MASK;
return sz > PAGE_SIZE ? sz : PAGE_SIZE;
}
static inline void *uint64_to_ptr(uint64_t addr)
{
void *ptr = (void *)((uintptr_t)addr);
return ptr;
}
static inline uint64_t ptr_to_uint64(void *ptr)
{
uint64_t addr = (uint64_t)((uintptr_t)ptr);
return addr;
}
struct secure_vm {
int *vmid;
int *vmperm;
int vmcount;
};
struct qos_cores {
int *coreno;
int corecount;
};
struct fastrpc_file;
struct fastrpc_buf {
struct hlist_node hn;
struct hlist_node hn_rem;
struct fastrpc_file *fl;
void *virt;
uint64_t phys;
size_t size;
unsigned long dma_attr;
uintptr_t raddr;
uint32_t flags;
int remote;
};
struct fastrpc_ctx_lst;
struct overlap {
uintptr_t start;
uintptr_t end;
int raix;
uintptr_t mstart;
uintptr_t mend;
uintptr_t offset;
int do_cmo; /*used for cache maintenance of inrout buffers*/
};
struct smq_invoke_ctx {
struct hlist_node hn;
struct completion work;
int retval;
int pid;
int tgid;
remote_arg_t *lpra;
remote_arg64_t *rpra;
remote_arg64_t *lrpra; /* Local copy of rpra for put_args */
int *fds;
unsigned int *attrs;
struct fastrpc_mmap **maps;
struct fastrpc_buf *buf;
size_t used;
struct fastrpc_file *fl;
uint32_t handle;
uint32_t sc;
struct overlap *overs;
struct overlap **overps;
struct smq_msg msg;
uint32_t *crc;
unsigned int magic;
uint64_t ctxid;
/* response flags from remote processor */
enum fastrpc_response_flags rspFlags;
/* user hint of completion time in us */
uint32_t earlyWakeTime;
/* work done status flag */
bool isWorkDone;
};
struct fastrpc_ctx_lst {
struct hlist_head pending;
struct hlist_head interrupted;
};
struct fastrpc_smmu {
struct device *dev;
const char *dev_name;
int cb;
int enabled;
int faults;
int secure;
int coherent;
};
struct fastrpc_session_ctx {
struct device *dev;
struct fastrpc_smmu smmu;
int used;
};
struct fastrpc_static_pd {
char *servloc_name;
char *spdname;
struct notifier_block pdrnb;
struct notifier_block get_service_nb;
void *pdrhandle;
uint64_t pdrcount;
uint64_t prevpdrcount;
int ispdup;
int cid;
};
struct fastrpc_dsp_capabilities {
uint32_t is_cached; //! Flag if dsp attributes are cached
uint32_t dsp_attributes[FASTRPC_MAX_DSP_ATTRIBUTES];
};
struct fastrpc_channel_ctx {
char *name;
char *subsys;
struct rpmsg_device *rpdev;
struct device *dev;
struct fastrpc_session_ctx session[NUM_SESSIONS];
struct fastrpc_static_pd spd[NUM_SESSIONS];
struct completion work;
struct completion workport;
struct notifier_block nb;
struct mutex smd_mutex;
struct mutex rpmsg_mutex;
uint64_t sesscount;
uint64_t ssrcount;
void *handle;
uint64_t prevssrcount;
int issubsystemup;
int vmid;
struct secure_vm rhvm;
int ramdumpenabled;
void *rh_dump_dev;
/* Indicates, if channel is restricted to secure node only */
int secure;
/* Indicates whether the channel supports unsigned PD */
bool unsigned_support;
struct fastrpc_dsp_capabilities dsp_cap_kernel;
void *ipc_log_ctx;
/* cpu capabilities shared to DSP */
uint64_t cpuinfo_todsp;
bool cpuinfo_status;
struct smq_invoke_ctx *ctxtable[FASTRPC_CTX_MAX];
spinlock_t ctxlock;
};
struct fastrpc_apps {
struct fastrpc_channel_ctx *channel;
struct cdev cdev;
struct class *class;
struct smq_phy_page range;
struct hlist_head maps;
uint32_t staticpd_flags;
dev_t dev_no;
int compat;
struct hlist_head drivers;
spinlock_t hlock;
struct device *dev;
unsigned int latency;
int rpmsg_register;
bool legacy_remote_heap;
/* Unique job id for each message */
uint64_t jobid[NUM_CHANNELS];
struct device *secure_dev;
struct device *non_secure_dev;
/* Secure subsystems like ADSP/SLPI will use secure client */
struct wakeup_source *wake_source_secure;
/* Non-secure subsystem like CDSP will use regular client */
struct wakeup_source *wake_source;
struct qos_cores silvercores;
uint32_t max_size_limit;
void *ramdump_handle;
bool enable_ramdump;
};
struct fastrpc_mmap {
struct hlist_node hn;
struct fastrpc_file *fl;
struct fastrpc_apps *apps;
int fd;
uint32_t flags;
struct dma_buf *buf;
struct sg_table *table;
struct dma_buf_attachment *attach;
struct ion_handle *handle;
uint64_t phys;
size_t size;
uintptr_t va;
size_t len;
int refs;
uintptr_t raddr;
int uncached;
int secure;
uintptr_t attr;
bool is_filemap;
/* flag to indicate map used in process init */
};
enum fastrpc_perfkeys {
PERF_COUNT = 0,
PERF_FLUSH = 1,
PERF_MAP = 2,
PERF_COPY = 3,
PERF_LINK = 4,
PERF_GETARGS = 5,
PERF_PUTARGS = 6,
PERF_INVARGS = 7,
PERF_INVOKE = 8,
PERF_KEY_MAX = 9,
};
struct fastrpc_perf {
int64_t count;
int64_t flush;
int64_t map;
int64_t copy;
int64_t link;
int64_t getargs;
int64_t putargs;
int64_t invargs;
int64_t invoke;
int64_t tid;
struct hlist_node hn;
};
struct fastrpc_file {
struct hlist_node hn;
spinlock_t hlock;
struct hlist_head maps;
struct hlist_head cached_bufs;
struct hlist_head remote_bufs;
struct fastrpc_ctx_lst clst;
struct fastrpc_session_ctx *sctx;
struct fastrpc_buf *init_mem;
struct fastrpc_session_ctx *secsctx;
uint32_t mode;
uint32_t profile;
int sessionid;
int tgid;
int cid;
uint64_t ssrcount;
int pd;
char *servloc_name;
int file_close;
int dsp_proc_init;
struct fastrpc_apps *apps;
struct hlist_head perf;
struct dentry *debugfs_file;
struct mutex perf_mutex;
struct pm_qos_request pm_qos_req;
int qos_request;
struct mutex map_mutex;
struct mutex internal_map_mutex;
/* Identifies the device (MINOR_NUM_DEV / MINOR_NUM_SECURE_DEV) */
int dev_minor;
char *debug_buf;
/* Flag to enable PM wake/relax voting for every remote invoke */
int wake_enable;
uint32_t ws_timeout;
/* To indicate attempt has been made to allocate memory for debug_buf */
int debug_buf_alloced_attempted;
/* Flag to indicate dynamic process creation status*/
bool in_process_create;
struct completion shutdown;
};
static struct fastrpc_apps gfa;
static struct fastrpc_channel_ctx gcinfo[NUM_CHANNELS] = {
{
.name = "adsprpc-smd",
.subsys = "adsp",
.spd = {
{
.servloc_name =
AUDIO_PDR_SERVICE_LOCATION_CLIENT_NAME,
.spdname = ADSP_AUDIOPD_NAME,
.pdrnb.notifier_call =
fastrpc_pdr_notifier_cb,
.cid = ADSP_DOMAIN_ID,
},
{
.servloc_name =
SENSORS_PDR_ADSP_SERVICE_LOCATION_CLIENT_NAME,
.spdname = ADSP_SENSORPD_NAME,
.pdrnb.notifier_call =
fastrpc_pdr_notifier_cb,
.cid = ADSP_DOMAIN_ID,
}
},
.cpuinfo_todsp = FASTRPC_CPUINFO_DEFAULT,
.cpuinfo_status = false,
},
{
.name = "mdsprpc-smd",
.subsys = "modem",
.spd = {
{
.cid = MDSP_DOMAIN_ID,
}
},
.cpuinfo_todsp = FASTRPC_CPUINFO_DEFAULT,
.cpuinfo_status = false,
},
{
.name = "sdsprpc-smd",
.subsys = "slpi",
.spd = {
{
.servloc_name =
SENSORS_PDR_SLPI_SERVICE_LOCATION_CLIENT_NAME,
.spdname = SLPI_SENSORPD_NAME,
.pdrnb.notifier_call =
fastrpc_pdr_notifier_cb,
.cid = SDSP_DOMAIN_ID,
}
},
.cpuinfo_todsp = FASTRPC_CPUINFO_DEFAULT,
.cpuinfo_status = false,
},
{
.name = "cdsprpc-smd",
.subsys = "cdsp",
.spd = {
{
.cid = CDSP_DOMAIN_ID,
}
},
.cpuinfo_todsp = FASTRPC_CPUINFO_EARLY_WAKEUP,
.cpuinfo_status = false,
},
};
static int hlosvm[1] = {VMID_HLOS};
static int hlosvmperm[1] = {PERM_READ | PERM_WRITE | PERM_EXEC};
static void fastrpc_pm_awake(struct fastrpc_file *fl, int channel_type);
static inline int64_t getnstimediff(struct timespec64 *start)
{
int64_t ns;
struct timespec64 ts, b;
ktime_get_real_ts64(&ts);
b = timespec64_sub(ts, *start);
ns = timespec64_to_ns(&b);
return ns;
}
static inline int64_t *getperfcounter(struct fastrpc_file *fl, int key)
{
int err = 0;
int64_t *val = NULL;
struct fastrpc_perf *perf = NULL, *fperf = NULL;
struct hlist_node *n = NULL;
VERIFY(err, !IS_ERR_OR_NULL(fl));
if (err)
goto bail;
mutex_lock(&fl->perf_mutex);
hlist_for_each_entry_safe(perf, n, &fl->perf, hn) {
if (perf->tid == current->pid) {
fperf = perf;
break;
}
}
if (IS_ERR_OR_NULL(fperf)) {
fperf = kzalloc(sizeof(*fperf), GFP_KERNEL);
VERIFY(err, !IS_ERR_OR_NULL(fperf));
if (err) {
mutex_unlock(&fl->perf_mutex);
kfree(fperf);
goto bail;
}
fperf->tid = current->pid;
hlist_add_head(&fperf->hn, &fl->perf);
}
val = ((int64_t *)fperf) + key;
mutex_unlock(&fl->perf_mutex);
bail:
return val;
}
static inline int poll_on_early_response(struct smq_invoke_ctx *ctx)
{
int ii, jj, err = -EIO;
uint32_t sc = ctx->sc;
struct smq_invoke_buf *list;
struct smq_phy_page *pages;
uint64_t *fdlist;
uint32_t *crclist, *poll;
unsigned int inbufs, outbufs, handles;
/* calculate poll memory location */
inbufs = REMOTE_SCALARS_INBUFS(sc);
outbufs = REMOTE_SCALARS_OUTBUFS(sc);
handles = REMOTE_SCALARS_INHANDLES(sc) + REMOTE_SCALARS_OUTHANDLES(sc);
list = smq_invoke_buf_start(ctx->rpra, sc);
pages = smq_phy_page_start(sc, list);
fdlist = (uint64_t *)(pages + inbufs + outbufs + handles);
crclist = (uint32_t *)(fdlist + M_FDLIST);
poll = (uint32_t *)(crclist + M_CRCLIST);
/*
* poll on memory for actual completion after receiving
* early response from DSP. Return failure on timeout.
*/
preempt_disable();
for (ii = 0, jj = 0; ii < FASTRPC_POLL_TIME; ii++, jj++) {
if (*poll == FASTRPC_EARLY_WAKEUP_POLL) {
err = 0;
break;
}
if (jj == FASTRPC_POLL_TIME_WITHOUT_PREEMPT) {
/* limit preempt disable time with no rescheduling */
preempt_enable();
mem_barrier();
preempt_disable();
jj = 0;
}
udelay(1);
}
preempt_enable_no_resched();
return err;
}
static void fastrpc_buf_free(struct fastrpc_buf *buf, int cache)
{
struct fastrpc_file *fl = buf == NULL ? NULL : buf->fl;
int vmid, err = 0, cid = -1;
if (!fl)
return;
if (cache && buf->size < MAX_CACHE_BUF_SIZE) {
spin_lock(&fl->hlock);
hlist_add_head(&buf->hn, &fl->cached_bufs);
spin_unlock(&fl->hlock);
return;
}
if (buf->remote) {
spin_lock(&fl->hlock);
hlist_del_init(&buf->hn_rem);
spin_unlock(&fl->hlock);
buf->remote = 0;
buf->raddr = 0;
}
if (!IS_ERR_OR_NULL(buf->virt)) {
int destVM[1] = {VMID_HLOS};
int destVMperm[1] = {PERM_READ | PERM_WRITE | PERM_EXEC};
VERIFY(err, fl->sctx != NULL);
if (err)
goto bail;
if (fl->sctx->smmu.cb)
buf->phys &= ~((uint64_t)fl->sctx->smmu.cb << 32);
cid = fl->cid;
VERIFY(err, cid >= ADSP_DOMAIN_ID && cid < NUM_CHANNELS);
if (err) {
err = -ECHRNG;
pr_err("invalid channel 0x%zx set for session\n",
cid);
goto bail;
}
vmid = fl->apps->channel[cid].vmid;
if (vmid) {
int srcVM[2] = {VMID_HLOS, vmid};
hyp_assign_phys(buf->phys, buf_page_size(buf->size),
srcVM, 2, destVM, destVMperm, 1);
}
trace_fastrpc_dma_free(cid, buf->phys, buf->size);
dma_free_attrs(fl->sctx->smmu.dev, buf->size, buf->virt,
buf->phys, buf->dma_attr);
}
bail:
kfree(buf);
}
static void fastrpc_cached_buf_list_free(struct fastrpc_file *fl)
{
struct fastrpc_buf *buf, *free;
do {
struct hlist_node *n;
free = NULL;
spin_lock(&fl->hlock);
hlist_for_each_entry_safe(buf, n, &fl->cached_bufs, hn) {
hlist_del_init(&buf->hn);
free = buf;
break;
}
spin_unlock(&fl->hlock);
if (free)
fastrpc_buf_free(free, 0);
} while (free);
}
static void fastrpc_remote_buf_list_free(struct fastrpc_file *fl)
{
struct fastrpc_buf *buf, *free;
do {
struct hlist_node *n;
free = NULL;
spin_lock(&fl->hlock);
hlist_for_each_entry_safe(buf, n, &fl->remote_bufs, hn_rem) {
free = buf;
break;
}
spin_unlock(&fl->hlock);
if (free)
fastrpc_buf_free(free, 0);
} while (free);
}
static void fastrpc_mmap_add(struct fastrpc_mmap *map)
{
if (map->flags == ADSP_MMAP_HEAP_ADDR ||
map->flags == ADSP_MMAP_REMOTE_HEAP_ADDR) {
struct fastrpc_apps *me = &gfa;
spin_lock(&me->hlock);
hlist_add_head(&map->hn, &me->maps);
spin_unlock(&me->hlock);
} else {
struct fastrpc_file *fl = map->fl;
hlist_add_head(&map->hn, &fl->maps);
}
}
static int fastrpc_mmap_find(struct fastrpc_file *fl, int fd,
uintptr_t va, size_t len, int mflags, int refs,
struct fastrpc_mmap **ppmap)
{
struct fastrpc_apps *me = &gfa;
struct fastrpc_mmap *match = NULL, *map = NULL;
struct hlist_node *n;
if ((va + len) < va)
return -EOVERFLOW;
if (mflags == ADSP_MMAP_HEAP_ADDR ||
mflags == ADSP_MMAP_REMOTE_HEAP_ADDR) {
spin_lock(&me->hlock);
hlist_for_each_entry_safe(map, n, &me->maps, hn) {
if (va >= map->va &&
va + len <= map->va + map->len &&
map->fd == fd) {
if (refs) {
if (map->refs + 1 == INT_MAX) {
spin_unlock(&me->hlock);
return -ETOOMANYREFS;
}
map->refs++;
}
match = map;
break;
}
}
spin_unlock(&me->hlock);
} else {
hlist_for_each_entry_safe(map, n, &fl->maps, hn) {
if (va >= map->va &&
va + len <= map->va + map->len &&
map->fd == fd) {
if (refs) {
if (map->refs + 1 == INT_MAX)
return -ETOOMANYREFS;
map->refs++;
}
match = map;
break;
}
}
}
if (match) {
*ppmap = match;
return 0;
}
return -ENOTTY;
}
static int dma_alloc_memory(dma_addr_t *region_phys, void **vaddr, size_t size,
unsigned long dma_attr)
{
int err = 0;
struct fastrpc_apps *me = &gfa;
if (me->dev == NULL) {
pr_err("device adsprpc-mem is not initialized\n");
return -ENODEV;
}
VERIFY(err, size > 0 && size < me->max_size_limit);
if (err) {
err = -EFAULT;
pr_err("adsprpc: %s: invalid allocation size 0x%zx\n",
__func__, size);
return err;
}
*vaddr = dma_alloc_attrs(me->dev, size, region_phys,
GFP_KERNEL, dma_attr);
if (IS_ERR_OR_NULL(*vaddr)) {
pr_err("adsprpc: %s: %s: dma_alloc_attrs failed for size 0x%zx, returned %pK\n",
current->comm, __func__, size, (*vaddr));
return -ENOMEM;
}
return 0;
}
static int fastrpc_mmap_remove(struct fastrpc_file *fl, uintptr_t va,
size_t len, struct fastrpc_mmap **ppmap)
{
struct fastrpc_mmap *match = NULL, *map;
struct hlist_node *n;
struct fastrpc_apps *me = &gfa;
spin_lock(&me->hlock);
hlist_for_each_entry_safe(map, n, &me->maps, hn) {
if (map->refs == 1 && map->raddr == va &&
map->raddr + map->len == va + len &&
/* Remove map if not used in process initialization*/
!map->is_filemap) {
match = map;
hlist_del_init(&map->hn);
break;
}
}
spin_unlock(&me->hlock);
if (match) {
*ppmap = match;
return 0;
}
hlist_for_each_entry_safe(map, n, &fl->maps, hn) {
if (map->refs == 1 && map->raddr == va &&
map->raddr + map->len == va + len &&
/* Remove map if not used in process initialization*/
!map->is_filemap) {
match = map;
hlist_del_init(&map->hn);
break;
}
}
if (match) {
*ppmap = match;
return 0;
}
return -ENOTTY;
}
static void fastrpc_mmap_free(struct fastrpc_mmap *map, uint32_t flags)
{
struct fastrpc_apps *me = &gfa;
struct fastrpc_file *fl;
int vmid, cid = -1, err = 0;
struct fastrpc_session_ctx *sess;
if (!map)
return;
fl = map->fl;
if (fl && !(map->flags == ADSP_MMAP_HEAP_ADDR ||
map->flags == ADSP_MMAP_REMOTE_HEAP_ADDR)) {
cid = fl->cid;
VERIFY(err, cid >= ADSP_DOMAIN_ID && cid < NUM_CHANNELS);
if (err) {
err = -ECHRNG;
pr_err("adsprpc: ERROR:%s, Invalid channel id: %d, err:%d\n",
__func__, cid, err);
return;
}
}
if (map->flags == ADSP_MMAP_HEAP_ADDR ||
map->flags == ADSP_MMAP_REMOTE_HEAP_ADDR) {
spin_lock(&me->hlock);
map->refs--;
if (!map->refs)
hlist_del_init(&map->hn);
spin_unlock(&me->hlock);
if (map->refs > 0)
return;
} else {
map->refs--;
if (!map->refs)
hlist_del_init(&map->hn);
if (map->refs > 0 && !flags)
return;
}
if (map->flags == ADSP_MMAP_HEAP_ADDR ||
map->flags == ADSP_MMAP_REMOTE_HEAP_ADDR) {
if (me->dev == NULL) {
pr_err("adsprpc: %s: %s: failed to free remote heap allocation\n",
current->comm, __func__);
return;
}
trace_fastrpc_dma_free(-1, map->phys, map->size);
if (map->phys) {
dma_free_attrs(me->dev, map->size, (void *)map->va,
(dma_addr_t)map->phys, (unsigned long)map->attr);
}
} else if (map->flags == FASTRPC_DMAHANDLE_NOMAP) {
trace_fastrpc_dma_unmap(cid, map->phys, map->size);
if (!IS_ERR_OR_NULL(map->table))
dma_buf_unmap_attachment(map->attach, map->table,
DMA_BIDIRECTIONAL);
if (!IS_ERR_OR_NULL(map->attach))
dma_buf_detach(map->buf, map->attach);
if (!IS_ERR_OR_NULL(map->buf))
dma_buf_put(map->buf);
} else {
int destVM[1] = {VMID_HLOS};
int destVMperm[1] = {PERM_READ | PERM_WRITE | PERM_EXEC};
if (map->secure)
sess = fl->secsctx;
else
sess = fl->sctx;
vmid = fl->apps->channel[cid].vmid;
if (vmid && map->phys) {
int srcVM[2] = {VMID_HLOS, vmid};
hyp_assign_phys(map->phys, buf_page_size(map->size),
srcVM, 2, destVM, destVMperm, 1);
}
trace_fastrpc_dma_unmap(cid, map->phys, map->size);
if (!IS_ERR_OR_NULL(map->table))
dma_buf_unmap_attachment(map->attach, map->table,
DMA_BIDIRECTIONAL);
if (!IS_ERR_OR_NULL(map->attach))
dma_buf_detach(map->buf, map->attach);
if (!IS_ERR_OR_NULL(map->buf))
dma_buf_put(map->buf);
}
kfree(map);
}
static int fastrpc_session_alloc(struct fastrpc_channel_ctx *chan, int secure,
struct fastrpc_session_ctx **session);
static int fastrpc_mmap_create(struct fastrpc_file *fl, int fd,
unsigned int attr, uintptr_t va, size_t len, int mflags,
struct fastrpc_mmap **ppmap)
{
struct fastrpc_apps *me = &gfa;
struct fastrpc_session_ctx *sess;
struct fastrpc_apps *apps = fl->apps;
int cid = -1;
struct fastrpc_channel_ctx *chan = NULL;
struct fastrpc_mmap *map = NULL;
dma_addr_t region_phys = 0;
void *region_vaddr = NULL;
unsigned long flags;
int err = 0, vmid, sgl_index = 0;
struct scatterlist *sgl = NULL;
if (!fl) {
err = -EBADF;
goto bail;
}
cid = fl->cid;
VERIFY(err, cid >= ADSP_DOMAIN_ID && cid < NUM_CHANNELS);
if (err)
goto bail;
chan = &apps->channel[cid];
if (!fastrpc_mmap_find(fl, fd, va, len, mflags, 1, ppmap))
return 0;
map = kzalloc(sizeof(*map), GFP_KERNEL);
VERIFY(err, !IS_ERR_OR_NULL(map));
if (err)
goto bail;
INIT_HLIST_NODE(&map->hn);
map->flags = mflags;
map->refs = 1;
map->fl = fl;
map->fd = fd;
map->attr = attr;
map->is_filemap = false;
if (mflags == ADSP_MMAP_HEAP_ADDR ||
mflags == ADSP_MMAP_REMOTE_HEAP_ADDR) {
map->apps = me;
map->fl = NULL;
map->attr |= DMA_ATTR_SKIP_ZEROING | DMA_ATTR_NO_KERNEL_MAPPING;
VERIFY(err, !dma_alloc_memory(&region_phys, &region_vaddr,
len, (unsigned long) map->attr));
if (err)
goto bail;
trace_fastrpc_dma_alloc(fl->cid, (uint64_t)region_phys, len,
(unsigned long)map->attr, mflags);
map->phys = (uintptr_t)region_phys;
map->size = len;
map->va = (uintptr_t)region_vaddr;
} else if (mflags == FASTRPC_DMAHANDLE_NOMAP) {
VERIFY(err, !IS_ERR_OR_NULL(map->buf = dma_buf_get(fd)));
if (err)
goto bail;
VERIFY(err, !dma_buf_get_flags(map->buf, &flags));
if (err)
goto bail;
map->secure = flags & ION_FLAG_SECURE;
map->uncached = 1;
map->va = 0;
map->phys = 0;
VERIFY(err, !IS_ERR_OR_NULL(map->attach =
dma_buf_attach(map->buf, me->dev)));
if (err)
goto bail;
map->attach->dma_map_attrs |= DMA_ATTR_SKIP_CPU_SYNC;
VERIFY(err, !IS_ERR_OR_NULL(map->table =
dma_buf_map_attachment(map->attach,
DMA_BIDIRECTIONAL)));
if (err)
goto bail;
VERIFY(err, map->table->nents == 1);
if (err)
goto bail;
map->phys = sg_dma_address(map->table->sgl);
map->size = len;
trace_fastrpc_dma_map(cid, fd, map->phys, map->size,
len, mflags, map->attach->dma_map_attrs);
} else {
if (map->attr && (map->attr & FASTRPC_ATTR_KEEP_MAP)) {
pr_info("adsprpc: %s: buffer mapped with persist attr 0x%x\n",
__func__, (unsigned int)map->attr);
map->refs = 2;
}
VERIFY(err, !IS_ERR_OR_NULL(map->buf = dma_buf_get(fd)));
if (err)
goto bail;
VERIFY(err, !dma_buf_get_flags(map->buf, &flags));
if (err)
goto bail;
map->secure = flags & ION_FLAG_SECURE;
if (map->secure) {
if (!fl->secsctx)
err = fastrpc_session_alloc(chan, 1,
&fl->secsctx);
if (err)
goto bail;
}
if (map->secure)
sess = fl->secsctx;
else
sess = fl->sctx;
VERIFY(err, !IS_ERR_OR_NULL(sess));
if (err)
goto bail;
map->uncached = !(flags & ION_FLAG_CACHED);
if (map->attr & FASTRPC_ATTR_NOVA && !sess->smmu.coherent)
map->uncached = 1;
VERIFY(err, !IS_ERR_OR_NULL(map->attach =
dma_buf_attach(map->buf, sess->smmu.dev)));
if (err)
goto bail;
map->attach->dma_map_attrs |= DMA_ATTR_DELAYED_UNMAP;
map->attach->dma_map_attrs |= DMA_ATTR_EXEC_MAPPING;
if (map->attr & FASTRPC_ATTR_NON_COHERENT ||
(sess->smmu.coherent && map->uncached))
map->attach->dma_map_attrs |=
DMA_ATTR_FORCE_NON_COHERENT |
DMA_ATTR_SKIP_CPU_SYNC;
else if (map->attr & FASTRPC_ATTR_COHERENT)
map->attach->dma_map_attrs |= DMA_ATTR_FORCE_COHERENT;
/*
* Skip CPU sync if IO Cohernecy is not supported
* as we flush later
*/
else if (!sess->smmu.coherent)
map->attach->dma_map_attrs |= DMA_ATTR_SKIP_CPU_SYNC;
VERIFY(err, !IS_ERR_OR_NULL(map->table =
dma_buf_map_attachment(map->attach,
DMA_BIDIRECTIONAL)));
if (err)
goto bail;
if (!sess->smmu.enabled) {
VERIFY(err, map->table->nents == 1);
if (err)
goto bail;
}
map->phys = sg_dma_address(map->table->sgl);
if (sess->smmu.cb) {
map->phys += ((uint64_t)sess->smmu.cb << 32);
for_each_sg(map->table->sgl, sgl, map->table->nents,
sgl_index)
map->size += sg_dma_len(sgl);
} else {
map->size = buf_page_size(len);
}
trace_fastrpc_dma_map(cid, fd, map->phys, map->size,
len, mflags, map->attach->dma_map_attrs);
VERIFY(err, map->size >= len && map->size < me->max_size_limit);
if (err) {
err = -EFAULT;
pr_err("adsprpc: %s: invalid map size 0x%zx len 0x%zx\n",
__func__, map->size, len);
goto bail;
}
vmid = fl->apps->channel[cid].vmid;
if (!sess->smmu.enabled && !vmid) {
VERIFY(err, map->phys >= me->range.addr &&
map->phys + map->size <=
me->range.addr + me->range.size);
if (err) {
pr_err("adsprpc: %s: phys addr 0x%llx (size 0x%zx) out of CMA heap range\n",
__func__, map->phys, map->size);
goto bail;
}
}
if (vmid) {
int srcVM[1] = {VMID_HLOS};
int destVM[2] = {VMID_HLOS, vmid};
int destVMperm[2] = {PERM_READ | PERM_WRITE,
PERM_READ | PERM_WRITE | PERM_EXEC};
err = hyp_assign_phys(map->phys,
buf_page_size(map->size),
srcVM, 1, destVM, destVMperm, 2);
if (err)
goto bail;
}
map->va = va;
}
map->len = len;
fastrpc_mmap_add(map);
*ppmap = map;
bail:
if (err && map)
fastrpc_mmap_free(map, 0);
return err;
}
static int fastrpc_buf_alloc(struct fastrpc_file *fl, size_t size,
unsigned long dma_attr, uint32_t rflags,
int remote, struct fastrpc_buf **obuf)
{
int err = 0, vmid;
struct fastrpc_apps *me = &gfa;
struct fastrpc_buf *buf = NULL, *fr = NULL;
struct hlist_node *n;
int cid = -1;
cid = fl->cid;
VERIFY(err, cid >= ADSP_DOMAIN_ID && cid < NUM_CHANNELS);
if (err) {
err = -ECHRNG;
goto bail;
}
VERIFY(err, size > 0 && size < me->max_size_limit);
if (err) {
err = -EFAULT;
pr_err("adsprpc: %s: invalid allocation size 0x%zx\n",
__func__, size);
goto bail;
}
if (!remote) {
/* find the smallest buffer that fits in the cache */
spin_lock(&fl->hlock);
hlist_for_each_entry_safe(buf, n, &fl->cached_bufs, hn) {
if (buf->size >= size && (!fr || fr->size > buf->size))
fr = buf;
}
if (fr)
hlist_del_init(&fr->hn);
spin_unlock(&fl->hlock);
if (fr) {
*obuf = fr;
return 0;
}
}
buf = NULL;
VERIFY(err, NULL != (buf = kzalloc(sizeof(*buf), GFP_KERNEL)));
if (err)
goto bail;
INIT_HLIST_NODE(&buf->hn);
buf->fl = fl;
buf->virt = NULL;
buf->phys = 0;
buf->size = size;
buf->dma_attr = dma_attr;
buf->flags = rflags;
buf->raddr = 0;
buf->remote = 0;
VERIFY(err, fl && fl->sctx != NULL);
if (err) {
err = -EBADR;
goto bail;
}
buf->virt = dma_alloc_attrs(fl->sctx->smmu.dev, buf->size,
(dma_addr_t *)&buf->phys,
GFP_KERNEL, buf->dma_attr);
if (IS_ERR_OR_NULL(buf->virt)) {
/* free cache and retry */
fastrpc_cached_buf_list_free(fl);
buf->virt = dma_alloc_attrs(fl->sctx->smmu.dev, buf->size,
(dma_addr_t *)&buf->phys, GFP_KERNEL,
buf->dma_attr);
VERIFY(err, !IS_ERR_OR_NULL(buf->virt));
}
if (err) {
err = ENOMEM;
pr_err("adsprpc: %s: %s: dma_alloc_attrs failed for size 0x%zx, returned %pK\n",
current->comm, __func__, size, buf->virt);
goto bail;
}
if (fl->sctx->smmu.cb)
buf->phys += ((uint64_t)fl->sctx->smmu.cb << 32);
trace_fastrpc_dma_alloc(cid, buf->phys, size,
dma_attr, (int)rflags);
vmid = fl->apps->channel[cid].vmid;
if (vmid) {
int srcVM[1] = {VMID_HLOS};
int destVM[2] = {VMID_HLOS, vmid};
int destVMperm[2] = {PERM_READ | PERM_WRITE,
PERM_READ | PERM_WRITE | PERM_EXEC};
err = hyp_assign_phys(buf->phys, buf_page_size(size),
srcVM, 1, destVM, destVMperm, 2);
if (err)
goto bail;
}
if (remote) {
INIT_HLIST_NODE(&buf->hn_rem);
spin_lock(&fl->hlock);
hlist_add_head(&buf->hn_rem, &fl->remote_bufs);
spin_unlock(&fl->hlock);
buf->remote = remote;
}
*obuf = buf;
bail:
if (err && buf)
fastrpc_buf_free(buf, 0);
return err;
}
static int context_restore_interrupted(struct fastrpc_file *fl,
struct fastrpc_ioctl_invoke_crc *inv,
struct smq_invoke_ctx **po)
{
int err = 0;
struct smq_invoke_ctx *ctx = NULL, *ictx = NULL;
struct hlist_node *n;
struct fastrpc_ioctl_invoke *invoke = &inv->inv;
spin_lock(&fl->hlock);
hlist_for_each_entry_safe(ictx, n, &fl->clst.interrupted, hn) {
if (ictx->pid == current->pid) {
if (invoke->sc != ictx->sc || ictx->fl != fl)
err = -1;
else {
ctx = ictx;
hlist_del_init(&ctx->hn);
hlist_add_head(&ctx->hn, &fl->clst.pending);
}
break;
}
}
spin_unlock(&fl->hlock);
if (ctx)
*po = ctx;
return err;
}
#define CMP(aa, bb) ((aa) == (bb) ? 0 : (aa) < (bb) ? -1 : 1)
static int overlap_ptr_cmp(const void *a, const void *b)
{
struct overlap *pa = *((struct overlap **)a);
struct overlap *pb = *((struct overlap **)b);
/* sort with lowest starting buffer first */
int st = CMP(pa->start, pb->start);
/* sort with highest ending buffer first */
int ed = CMP(pb->end, pa->end);
return st == 0 ? ed : st;
}
static int context_build_overlap(struct smq_invoke_ctx *ctx)
{
int i, err = 0;
remote_arg_t *lpra = ctx->lpra;
int inbufs = REMOTE_SCALARS_INBUFS(ctx->sc);
int outbufs = REMOTE_SCALARS_OUTBUFS(ctx->sc);
int nbufs = inbufs + outbufs;
struct overlap max;
for (i = 0; i < nbufs; ++i) {
ctx->overs[i].start = (uintptr_t)lpra[i].buf.pv;
ctx->overs[i].end = ctx->overs[i].start + lpra[i].buf.len;
if (lpra[i].buf.len) {
VERIFY(err, ctx->overs[i].end > ctx->overs[i].start);
if (err)
goto bail;
}
ctx->overs[i].raix = i;
ctx->overps[i] = &ctx->overs[i];
}
sort(ctx->overps, nbufs, sizeof(*ctx->overps), overlap_ptr_cmp, NULL);
max.start = 0;
max.end = 0;
for (i = 0; i < nbufs; ++i) {
if (ctx->overps[i]->start < max.end) {
ctx->overps[i]->mstart = max.end;
ctx->overps[i]->mend = ctx->overps[i]->end;
ctx->overps[i]->offset = max.end -
ctx->overps[i]->start;
if (ctx->overps[i]->end > max.end) {
max.end = ctx->overps[i]->end;
} else {
if ((max.raix < inbufs &&
ctx->overps[i]->raix + 1 > inbufs) ||
(ctx->overps[i]->raix < inbufs &&
max.raix + 1 > inbufs))
ctx->overps[i]->do_cmo = 1;
ctx->overps[i]->mend = 0;
ctx->overps[i]->mstart = 0;
}
} else {
ctx->overps[i]->mend = ctx->overps[i]->end;
ctx->overps[i]->mstart = ctx->overps[i]->start;
ctx->overps[i]->offset = 0;
max = *ctx->overps[i];
}
}
bail:
return err;
}
#define K_COPY_FROM_USER(err, kernel, dst, src, size) \
do {\
if (!(kernel))\
VERIFY(err, 0 == copy_from_user((dst),\
(void const __user *)(src),\
(size)));\
else\
memmove((dst), (src), (size));\
} while (0)
#define K_COPY_TO_USER(err, kernel, dst, src, size) \
do {\
if (!(kernel))\
VERIFY(err, 0 == copy_to_user((void __user *)(dst),\
(src), (size)));\
else\
memmove((dst), (src), (size));\
} while (0)
static void context_free(struct smq_invoke_ctx *ctx);
static int context_alloc(struct fastrpc_file *fl, uint32_t kernel,
struct fastrpc_ioctl_invoke_crc *invokefd,
struct smq_invoke_ctx **po)
{
struct fastrpc_apps *me = &gfa;
int err = 0, bufs, ii, size = 0, cid = -1;
struct smq_invoke_ctx *ctx = NULL;
struct fastrpc_ctx_lst *clst = &fl->clst;
struct fastrpc_ioctl_invoke *invoke = &invokefd->inv;
struct fastrpc_channel_ctx *chan = 0;
unsigned long irq_flags = 0;
bufs = REMOTE_SCALARS_LENGTH(invoke->sc);
size = bufs * sizeof(*ctx->lpra) + bufs * sizeof(*ctx->maps) +
sizeof(*ctx->fds) * (bufs) +
sizeof(*ctx->attrs) * (bufs) +
sizeof(*ctx->overs) * (bufs) +
sizeof(*ctx->overps) * (bufs);
VERIFY(err, NULL != (ctx = kzalloc(sizeof(*ctx) + size, GFP_KERNEL)));
if (err)
goto bail;
INIT_HLIST_NODE(&ctx->hn);
hlist_add_fake(&ctx->hn);
ctx->fl = fl;
ctx->maps = (struct fastrpc_mmap **)(&ctx[1]);
ctx->lpra = (remote_arg_t *)(&ctx->maps[bufs]);
ctx->fds = (int *)(&ctx->lpra[bufs]);
ctx->attrs = (unsigned int *)(&ctx->fds[bufs]);
ctx->overs = (struct overlap *)(&ctx->attrs[bufs]);
ctx->overps = (struct overlap **)(&ctx->overs[bufs]);
K_COPY_FROM_USER(err, kernel, (void *)ctx->lpra, invoke->pra,
bufs * sizeof(*ctx->lpra));
if (err)
goto bail;
if (invokefd->fds) {
K_COPY_FROM_USER(err, kernel, ctx->fds, invokefd->fds,
bufs * sizeof(*ctx->fds));
if (err)
goto bail;
} else {
ctx->fds = NULL;
}
if (invokefd->attrs) {
K_COPY_FROM_USER(err, kernel, ctx->attrs, invokefd->attrs,
bufs * sizeof(*ctx->attrs));
if (err)
goto bail;
}
ctx->crc = (uint32_t *)invokefd->crc;
ctx->handle = invoke->handle;
ctx->sc = invoke->sc;
if (bufs) {
VERIFY(err, 0 == context_build_overlap(ctx));
if (err)
goto bail;
}
ctx->retval = 0xDECAF;
ctx->pid = current->pid;
ctx->tgid = fl->tgid;
init_completion(&ctx->work);
ctx->magic = FASTRPC_CTX_MAGIC;
ctx->rspFlags = NORMAL_RESPONSE;
ctx->isWorkDone = false;
spin_lock(&fl->hlock);
hlist_add_head(&ctx->hn, &clst->pending);
cid = (fl->cid >= ADSP_DOMAIN_ID && fl->cid < NUM_CHANNELS)
? fl->cid : 0;
chan = &me->channel[cid];
spin_unlock(&fl->hlock);
spin_lock_irqsave(&chan->ctxlock, irq_flags);
me->jobid[cid]++;
for (ii = 0; ii < FASTRPC_CTX_MAX; ii++) {
if (!chan->ctxtable[ii]) {
chan->ctxtable[ii] = ctx;
ctx->ctxid = (me->jobid[cid] << 12) | (ii << 4);
break;
}
}
spin_unlock_irqrestore(&chan->ctxlock, irq_flags);
VERIFY(err, ii < FASTRPC_CTX_MAX);
if (err) {
pr_err("adsprpc: out of context memory\n");
goto bail;
}
trace_fastrpc_context_alloc((uint64_t)ctx,
ctx->ctxid | fl->pd, ctx->handle, ctx->sc);
*po = ctx;
bail:
if (ctx && err)
context_free(ctx);
return err;
}
static void context_save_interrupted(struct smq_invoke_ctx *ctx)
{
struct fastrpc_ctx_lst *clst = &ctx->fl->clst;
spin_lock(&ctx->fl->hlock);
hlist_del_init(&ctx->hn);
hlist_add_head(&ctx->hn, &clst->interrupted);
spin_unlock(&ctx->fl->hlock);
}
static void context_free(struct smq_invoke_ctx *ctx)
{
int i;
struct fastrpc_apps *me = &gfa;
int nbufs = REMOTE_SCALARS_INBUFS(ctx->sc) +
REMOTE_SCALARS_OUTBUFS(ctx->sc);
int cid = ctx->fl->cid;
struct fastrpc_channel_ctx *chan = &me->channel[cid];
unsigned long irq_flags = 0;
spin_lock_irqsave(&chan->ctxlock, irq_flags);
for (i = 0; i < FASTRPC_CTX_MAX; i++) {
if (chan->ctxtable[i] == ctx) {
chan->ctxtable[i] = NULL;
break;
}
}
spin_unlock_irqrestore(&chan->ctxlock, irq_flags);
spin_lock(&ctx->fl->hlock);
hlist_del_init(&ctx->hn);
spin_unlock(&ctx->fl->hlock);
mutex_lock(&ctx->fl->map_mutex);
for (i = 0; i < nbufs; ++i)
fastrpc_mmap_free(ctx->maps[i], 0);
mutex_unlock(&ctx->fl->map_mutex);
fastrpc_buf_free(ctx->buf, 1);
kfree(ctx->lrpra);
ctx->lrpra = NULL;
ctx->magic = 0;
ctx->ctxid = 0;
trace_fastrpc_context_free((uint64_t)ctx,
ctx->msg.invoke.header.ctx, ctx->handle, ctx->sc);
kfree(ctx);
}
static void context_notify_user(struct smq_invoke_ctx *ctx,
int retval, uint32_t rspFlags, uint32_t earlyWakeTime)
{
fastrpc_pm_awake(ctx->fl, gcinfo[ctx->fl->cid].secure);
ctx->retval = retval;
switch (rspFlags) {
case NORMAL_RESPONSE:
/* normal response with return value */
ctx->retval = retval;
ctx->isWorkDone = true;
break;
case USER_EARLY_SIGNAL:
/* user hint of approximate time of completion */
ctx->earlyWakeTime = earlyWakeTime;
break;
case EARLY_RESPONSE:
/* rpc framework early response with return value */
ctx->retval = retval;
break;
case COMPLETE_SIGNAL:
/* rpc framework signal to clear if pending on ctx */
ctx->isWorkDone = true;
break;
default:
break;
}
ctx->rspFlags = (enum fastrpc_response_flags)rspFlags;
trace_fastrpc_context_complete(ctx->fl->cid, (uint64_t)ctx, retval,
ctx->msg.invoke.header.ctx, ctx->handle, ctx->sc);
complete(&ctx->work);
}
static void fastrpc_notify_users(struct fastrpc_file *me)
{
struct smq_invoke_ctx *ictx;
struct hlist_node *n;
spin_lock(&me->hlock);
hlist_for_each_entry_safe(ictx, n, &me->clst.pending, hn) {
ictx->isWorkDone = true;
trace_fastrpc_context_complete(me->cid, (uint64_t)ictx,
ictx->retval, ictx->msg.invoke.header.ctx,
ictx->handle, ictx->sc);
complete(&ictx->work);
}
hlist_for_each_entry_safe(ictx, n, &me->clst.interrupted, hn) {
ictx->isWorkDone = true;
trace_fastrpc_context_complete(me->cid, (uint64_t)ictx,
ictx->retval, ictx->msg.invoke.header.ctx,
ictx->handle, ictx->sc);
complete(&ictx->work);
}
spin_unlock(&me->hlock);
}
static void fastrpc_notify_users_staticpd_pdr(struct fastrpc_file *me)
{
struct smq_invoke_ctx *ictx;
struct hlist_node *n;
spin_lock(&me->hlock);
hlist_for_each_entry_safe(ictx, n, &me->clst.pending, hn) {
if (ictx->msg.pid) {
ictx->isWorkDone = true;
trace_fastrpc_context_complete(me->cid, (uint64_t)ictx,
ictx->retval, ictx->msg.invoke.header.ctx,
ictx->handle, ictx->sc);
complete(&ictx->work);
}
}
hlist_for_each_entry_safe(ictx, n, &me->clst.interrupted, hn) {
if (ictx->msg.pid) {
ictx->isWorkDone = true;
trace_fastrpc_context_complete(me->cid, (uint64_t)ictx,
ictx->retval, ictx->msg.invoke.header.ctx,
ictx->handle, ictx->sc);
complete(&ictx->work);
}
}
spin_unlock(&me->hlock);
}
static void fastrpc_notify_drivers(struct fastrpc_apps *me, int cid)
{
struct fastrpc_file *fl;
struct hlist_node *n;
spin_lock(&me->hlock);
hlist_for_each_entry_safe(fl, n, &me->drivers, hn) {
if (fl->cid == cid)
fastrpc_notify_users(fl);
}
spin_unlock(&me->hlock);
}
static void fastrpc_notify_pdr_drivers(struct fastrpc_apps *me,
char *servloc_name)
{
struct fastrpc_file *fl;
struct hlist_node *n;
spin_lock(&me->hlock);
hlist_for_each_entry_safe(fl, n, &me->drivers, hn) {
if (fl->servloc_name && !strcmp(servloc_name, fl->servloc_name))
fastrpc_notify_users_staticpd_pdr(fl);
}
spin_unlock(&me->hlock);
}
static void context_list_ctor(struct fastrpc_ctx_lst *me)
{
INIT_HLIST_HEAD(&me->interrupted);
INIT_HLIST_HEAD(&me->pending);
}
static void fastrpc_context_list_dtor(struct fastrpc_file *fl)
{
struct fastrpc_ctx_lst *clst = &fl->clst;
struct smq_invoke_ctx *ictx = NULL, *ctxfree;
struct hlist_node *n;
do {
ctxfree = NULL;
spin_lock(&fl->hlock);
hlist_for_each_entry_safe(ictx, n, &clst->interrupted, hn) {
hlist_del_init(&ictx->hn);
ctxfree = ictx;
break;
}
spin_unlock(&fl->hlock);
if (ctxfree)
context_free(ctxfree);
} while (ctxfree);
do {
ctxfree = NULL;
spin_lock(&fl->hlock);
hlist_for_each_entry_safe(ictx, n, &clst->pending, hn) {
hlist_del_init(&ictx->hn);
ctxfree = ictx;
break;
}
spin_unlock(&fl->hlock);
if (ctxfree)
context_free(ctxfree);
} while (ctxfree);
}
static int fastrpc_file_free(struct fastrpc_file *fl);
static void fastrpc_file_list_dtor(struct fastrpc_apps *me)
{
struct fastrpc_file *fl, *free;
struct hlist_node *n;
do {
free = NULL;
spin_lock(&me->hlock);
hlist_for_each_entry_safe(fl, n, &me->drivers, hn) {
hlist_del_init(&fl->hn);
free = fl;
break;
}
spin_unlock(&me->hlock);
if (free)
fastrpc_file_free(free);
} while (free);
}
static int get_args(uint32_t kernel, struct smq_invoke_ctx *ctx)
{
remote_arg64_t *rpra, *lrpra;
remote_arg_t *lpra = ctx->lpra;
struct smq_invoke_buf *list;
struct smq_phy_page *pages, *ipage;
uint32_t sc = ctx->sc;
int inbufs = REMOTE_SCALARS_INBUFS(sc);
int outbufs = REMOTE_SCALARS_OUTBUFS(sc);
int handles, bufs = inbufs + outbufs;
uintptr_t args;
size_t rlen = 0, copylen = 0, metalen = 0, lrpralen = 0;
int i, oix;
int err = 0, j = 0;
int mflags = 0;
uint64_t *fdlist;
uint32_t *crclist;
uint32_t earlyHint;
int64_t *perf_counter = NULL;
if (ctx->fl->profile)
perf_counter = getperfcounter(ctx->fl, PERF_COUNT);
/* calculate size of the metadata */
rpra = NULL;
lrpra = NULL;
list = smq_invoke_buf_start(rpra, sc);
pages = smq_phy_page_start(sc, list);
ipage = pages;
PERF(ctx->fl->profile, GET_COUNTER(perf_counter, PERF_MAP),
for (i = 0; i < bufs; ++i) {
uintptr_t buf = (uintptr_t)lpra[i].buf.pv;
size_t len = lpra[i].buf.len;
mutex_lock(&ctx->fl->map_mutex);
if (ctx->fds && (ctx->fds[i] != -1))
err = fastrpc_mmap_create(ctx->fl, ctx->fds[i],
ctx->attrs[i], buf, len,
mflags, &ctx->maps[i]);
mutex_unlock(&ctx->fl->map_mutex);
if (err)
goto bail;
ipage += 1;
}
PERF_END);
handles = REMOTE_SCALARS_INHANDLES(sc) + REMOTE_SCALARS_OUTHANDLES(sc);
mutex_lock(&ctx->fl->map_mutex);
for (i = bufs; i < bufs + handles; i++) {
int dmaflags = 0;
if (ctx->attrs && (ctx->attrs[i] & FASTRPC_ATTR_NOMAP))
dmaflags = FASTRPC_DMAHANDLE_NOMAP;
if (ctx->fds && (ctx->fds[i] != -1))
err = fastrpc_mmap_create(ctx->fl, ctx->fds[i],
FASTRPC_ATTR_NOVA, 0, 0, dmaflags,
&ctx->maps[i]);
if (err) {
for (j = bufs; j < i; j++)
fastrpc_mmap_free(ctx->maps[j], 0);
mutex_unlock(&ctx->fl->map_mutex);
goto bail;
}
ipage += 1;
}
mutex_unlock(&ctx->fl->map_mutex);
/* metalen includes meta data, fds, crc and early wakeup hint */
metalen = copylen = (size_t)&ipage[0] + (sizeof(uint64_t) * M_FDLIST) +
(sizeof(uint32_t) * M_CRCLIST) + sizeof(earlyHint);
/* allocate new local rpra buffer */
lrpralen = (size_t)&list[0];
if (lrpralen) {
lrpra = kzalloc(lrpralen, GFP_KERNEL);
VERIFY(err, !IS_ERR_OR_NULL(lrpra));
if (err)
goto bail;
}
ctx->lrpra = lrpra;
/* calculate len required for copying */
for (oix = 0; oix < inbufs + outbufs; ++oix) {
int i = ctx->overps[oix]->raix;
uintptr_t mstart, mend;
size_t len = lpra[i].buf.len;
if (!len)
continue;
if (ctx->maps[i])
continue;
if (ctx->overps[oix]->offset == 0)
copylen = ALIGN(copylen, BALIGN);
mstart = ctx->overps[oix]->mstart;
mend = ctx->overps[oix]->mend;
VERIFY(err, (mend - mstart) <= LONG_MAX);
if (err)
goto bail;
copylen += mend - mstart;
}
ctx->used = copylen;
/* allocate new buffer */
if (copylen) {
err = fastrpc_buf_alloc(ctx->fl, copylen, 0, 0, 0, &ctx->buf);
if (err)
goto bail;
}
if (ctx->buf->virt && metalen <= copylen)
memset(ctx->buf->virt, 0, metalen);
/* copy metadata */
rpra = ctx->buf->virt;
ctx->rpra = rpra;
list = smq_invoke_buf_start(rpra, sc);
pages = smq_phy_page_start(sc, list);
ipage = pages;
args = (uintptr_t)ctx->buf->virt + metalen;
for (i = 0; i < bufs + handles; ++i) {
if (lpra[i].buf.len)
list[i].num = 1;
else
list[i].num = 0;
list[i].pgidx = ipage - pages;
ipage++;
}
/* map ion buffers */
PERF(ctx->fl->profile, GET_COUNTER(perf_counter, PERF_MAP),
for (i = 0; rpra && i < inbufs + outbufs; ++i) {
struct fastrpc_mmap *map = ctx->maps[i];
uint64_t buf = ptr_to_uint64(lpra[i].buf.pv);
size_t len = lpra[i].buf.len;
rpra[i].buf.pv = 0;
rpra[i].buf.len = len;
if (!len)
continue;
if (map) {
struct vm_area_struct *vma;
uintptr_t offset;
uint64_t num = buf_num_pages(buf, len);
int idx = list[i].pgidx;
if (map->attr & FASTRPC_ATTR_NOVA) {
offset = 0;
} else {
down_read(&current->mm->mmap_sem);
VERIFY(err, NULL != (vma = find_vma(current->mm,
map->va)));
if (err) {
up_read(&current->mm->mmap_sem);
goto bail;
}
offset = buf_page_start(buf) - vma->vm_start;
up_read(&current->mm->mmap_sem);
VERIFY(err,
offset + len <= (uintptr_t)map->size);
if (err)
goto bail;
}
pages[idx].addr = map->phys + offset;
pages[idx].size = num << PAGE_SHIFT;
}
rpra[i].buf.pv = buf;
}
PERF_END);
for (i = bufs; i < bufs + handles; ++i) {
struct fastrpc_mmap *map = ctx->maps[i];
if (map) {
pages[i].addr = map->phys;
pages[i].size = map->size;
}
}
fdlist = (uint64_t *)&pages[bufs + handles];
crclist = (uint32_t *)&fdlist[M_FDLIST];
/* reset fds, crc and early wakeup hint memory */
/* remote process updates these values before responding */
memset(fdlist, 0, sizeof(uint64_t)*M_FDLIST +
sizeof(uint32_t)*M_CRCLIST + sizeof(earlyHint));
/* copy non ion buffers */
PERF(ctx->fl->profile, GET_COUNTER(perf_counter, PERF_COPY),
rlen = copylen - metalen;
for (oix = 0; rpra && oix < inbufs + outbufs; ++oix) {
int i = ctx->overps[oix]->raix;
struct fastrpc_mmap *map = ctx->maps[i];
size_t mlen;
uint64_t buf;
size_t len = lpra[i].buf.len;
if (!len)
continue;
if (map)
continue;
if (ctx->overps[oix]->offset == 0) {
rlen -= ALIGN(args, BALIGN) - args;
args = ALIGN(args, BALIGN);
}
mlen = ctx->overps[oix]->mend - ctx->overps[oix]->mstart;
VERIFY(err, rlen >= mlen);
if (err)
goto bail;
rpra[i].buf.pv =
(args - ctx->overps[oix]->offset);
pages[list[i].pgidx].addr = ctx->buf->phys -
ctx->overps[oix]->offset +
(copylen - rlen);
pages[list[i].pgidx].addr =
buf_page_start(pages[list[i].pgidx].addr);
buf = rpra[i].buf.pv;
pages[list[i].pgidx].size = buf_num_pages(buf, len) * PAGE_SIZE;
if (i < inbufs) {
K_COPY_FROM_USER(err, kernel, uint64_to_ptr(buf),
lpra[i].buf.pv, len);
if (err)
goto bail;
}
args = args + mlen;
rlen -= mlen;
}
PERF_END);
PERF(ctx->fl->profile, GET_COUNTER(perf_counter, PERF_FLUSH),
for (oix = 0; oix < inbufs + outbufs; ++oix) {
int i = ctx->overps[oix]->raix;
struct fastrpc_mmap *map = ctx->maps[i];
if (i+1 > inbufs) // Avoiding flush for outbufs
continue;
if (map && map->uncached)
continue;
if (ctx->fl->sctx && ctx->fl->sctx->smmu.coherent &&
!(map && (map->attr & FASTRPC_ATTR_NON_COHERENT)))
continue;
if (map && (map->attr & FASTRPC_ATTR_COHERENT))
continue;
if (map && (map->attr & FASTRPC_ATTR_FORCE_NOFLUSH))
continue;
if (rpra && rpra[i].buf.len && (ctx->overps[oix]->mstart ||
ctx->overps[oix]->do_cmo == 1)) {
if (map && map->buf) {
if ((buf_page_size(ctx->overps[oix]->mend -
ctx->overps[oix]->mstart)) == map->size) {
dma_buf_begin_cpu_access(map->buf,
DMA_TO_DEVICE);
dma_buf_end_cpu_access(map->buf,
DMA_TO_DEVICE);
pr_debug("Debug: adsprpc: %s: %s: sc 0x%x pv 0x%llx, mend 0x%llx mstart 0x%llx, len %zu size %zu\n",
current->comm, __func__, sc,
rpra[i].buf.pv, ctx->overps[oix]->mend,
ctx->overps[oix]->mstart,
rpra[i].buf.len, map->size);
} else {
uintptr_t offset;
uint64_t flush_len;
struct vm_area_struct *vma;
down_read(&current->mm->mmap_sem);
VERIFY(err, NULL != (vma = find_vma(
current->mm, rpra[i].buf.pv)));
if (err) {
up_read(&current->mm->mmap_sem);
goto bail;
}
if (ctx->overps[oix]->do_cmo) {
offset = rpra[i].buf.pv -
vma->vm_start;
flush_len = rpra[i].buf.len;
} else {
offset =
ctx->overps[oix]->mstart
- vma->vm_start;
flush_len =
ctx->overps[oix]->mend -
ctx->overps[oix]->mstart;
}
up_read(&current->mm->mmap_sem);
dma_buf_begin_cpu_access_partial(
map->buf, DMA_TO_DEVICE, offset,
flush_len);
dma_buf_end_cpu_access_partial(
map->buf, DMA_TO_DEVICE, offset,
flush_len);
pr_debug("Debug: adsprpc: %s: %s: sc 0x%x vm_start 0x%llx pv 0x%llx, offset 0x%llx, mend 0x%llx mstart 0x%llx, len %zu size %zu\n",
current->comm, __func__, sc,
vma->vm_start, rpra[i].buf.pv, offset,
ctx->overps[oix]->mend,
ctx->overps[oix]->mstart,
rpra[i].buf.len, map->size);
}
}
}
}
PERF_END);
for (i = bufs; rpra && i < bufs + handles; i++) {
if (ctx->fds)
rpra[i].dma.fd = ctx->fds[i];
rpra[i].dma.len = (uint32_t)lpra[i].buf.len;
rpra[i].dma.offset = (uint32_t)(uintptr_t)lpra[i].buf.pv;
}
/* Copy rpra to local buffer */
if (ctx->lrpra && rpra && lrpralen > 0)
memcpy(ctx->lrpra, rpra, lrpralen);
bail:
return err;
}
static int put_args(uint32_t kernel, struct smq_invoke_ctx *ctx,
remote_arg_t *upra)
{
uint32_t sc = ctx->sc;
struct smq_invoke_buf *list;
struct smq_phy_page *pages;
struct fastrpc_mmap *mmap;
uint64_t *fdlist;
uint32_t *crclist = NULL;
remote_arg64_t *rpra = ctx->lrpra;
int i, inbufs, outbufs, handles;
int err = 0;
inbufs = REMOTE_SCALARS_INBUFS(sc);
outbufs = REMOTE_SCALARS_OUTBUFS(sc);
handles = REMOTE_SCALARS_INHANDLES(sc) + REMOTE_SCALARS_OUTHANDLES(sc);
list = smq_invoke_buf_start(ctx->rpra, sc);
pages = smq_phy_page_start(sc, list);
fdlist = (uint64_t *)(pages + inbufs + outbufs + handles);
crclist = (uint32_t *)(fdlist + M_FDLIST);
for (i = inbufs; i < inbufs + outbufs; ++i) {
if (!ctx->maps[i]) {
K_COPY_TO_USER(err, kernel,
ctx->lpra[i].buf.pv,
uint64_to_ptr(rpra[i].buf.pv),
rpra[i].buf.len);
if (err)
goto bail;
} else {
mutex_lock(&ctx->fl->map_mutex);
fastrpc_mmap_free(ctx->maps[i], 0);
mutex_unlock(&ctx->fl->map_mutex);
ctx->maps[i] = NULL;
}
}
mutex_lock(&ctx->fl->map_mutex);
if (inbufs + outbufs + handles) {
for (i = 0; i < M_FDLIST; i++) {
if (!fdlist[i])
break;
if (!fastrpc_mmap_find(ctx->fl, (int)fdlist[i], 0, 0,
0, 0, &mmap))
fastrpc_mmap_free(mmap, 0);
}
}
mutex_unlock(&ctx->fl->map_mutex);
if (ctx->crc && crclist && rpra)
K_COPY_TO_USER(err, kernel, ctx->crc,
crclist, M_CRCLIST*sizeof(uint32_t));
bail:
return err;
}
static void inv_args(struct smq_invoke_ctx *ctx)
{
int i, inbufs, outbufs;
uint32_t sc = ctx->sc;
remote_arg64_t *rpra = ctx->lrpra;
int err = 0;
inbufs = REMOTE_SCALARS_INBUFS(sc);
outbufs = REMOTE_SCALARS_OUTBUFS(sc);
for (i = 0; i < inbufs + outbufs; ++i) {
int over = ctx->overps[i]->raix;
struct fastrpc_mmap *map = ctx->maps[over];
if ((over + 1 <= inbufs))
continue;
if (map && map->uncached)
continue;
if (!rpra[over].buf.len)
continue;
if (ctx->fl && ctx->fl->sctx && ctx->fl->sctx->smmu.coherent &&
!(map && (map->attr & FASTRPC_ATTR_NON_COHERENT)))
continue;
if (map && (map->attr & FASTRPC_ATTR_COHERENT))
continue;
if (map && (map->attr & FASTRPC_ATTR_FORCE_NOINVALIDATE))
continue;
if (buf_page_start(ptr_to_uint64((void *)rpra)) ==
buf_page_start(rpra[over].buf.pv)) {
continue;
}
if (ctx->overps[i]->mstart || ctx->overps[i]->do_cmo == 1) {
if (map && map->buf) {
if ((buf_page_size(ctx->overps[i]->mend -
ctx->overps[i]->mstart)) == map->size) {
dma_buf_begin_cpu_access(map->buf,
DMA_TO_DEVICE);
dma_buf_end_cpu_access(map->buf,
DMA_FROM_DEVICE);
pr_debug("Debug: adsprpc: %s: %s: sc 0x%x pv 0x%llx, mend 0x%llx mstart 0x%llx, len %zu size %zu\n",
current->comm, __func__, sc,
rpra[over].buf.pv, ctx->overps[i]->mend,
ctx->overps[i]->mstart,
rpra[over].buf.len, map->size);
} else {
uintptr_t offset;
uint64_t inv_len;
struct vm_area_struct *vma;
down_read(&current->mm->mmap_sem);
VERIFY(err, NULL != (vma = find_vma(
current->mm,
rpra[over].buf.pv)));
if (err) {
up_read(&current->mm->mmap_sem);
goto bail;
}
if (ctx->overps[i]->do_cmo) {
offset = rpra[over].buf.pv -
vma->vm_start;
inv_len = rpra[over].buf.len;
} else {
offset =
ctx->overps[i]->mstart -
vma->vm_start;
inv_len =
ctx->overps[i]->mend -
ctx->overps[i]->mstart;
}
up_read(&current->mm->mmap_sem);
dma_buf_begin_cpu_access_partial(
map->buf, DMA_TO_DEVICE, offset,
inv_len);
dma_buf_end_cpu_access_partial(map->buf,
DMA_FROM_DEVICE, offset,
inv_len);
pr_debug("Debug: adsprpc: %s: %s: sc 0x%x vm_start 0x%llx pv 0x%llx, offset 0x%llx, mend 0x%llx mstart 0x%llx, len %zu size %zu\n",
current->comm, __func__, sc,
vma->vm_start, rpra[over].buf.pv,
offset, ctx->overps[i]->mend,
ctx->overps[i]->mstart,
rpra[over].buf.len, map->size);
}
}
}
}
bail:
return;
}
static int fastrpc_invoke_send(struct smq_invoke_ctx *ctx,
uint32_t kernel, uint32_t handle)
{
struct smq_msg *msg = &ctx->msg;
struct fastrpc_file *fl = ctx->fl;
struct fastrpc_channel_ctx *channel_ctx = NULL;
int err = 0, cid = -1;
if (!fl) {
err = -EBADF;
goto bail;
}
cid = fl->cid;
VERIFY(err, cid >= ADSP_DOMAIN_ID && cid < NUM_CHANNELS);
if (err) {
err = -ECHRNG;
goto bail;
}
channel_ctx = &fl->apps->channel[cid];
mutex_lock(&channel_ctx->smd_mutex);
msg->pid = fl->tgid;
msg->tid = current->pid;
if (fl->sessionid)
msg->tid |= (1 << SESSION_ID_INDEX);
if (kernel)
msg->pid = 0;
msg->invoke.header.ctx = ctx->ctxid | fl->pd;
msg->invoke.header.handle = handle;
msg->invoke.header.sc = ctx->sc;
msg->invoke.page.addr = ctx->buf ? ctx->buf->phys : 0;
msg->invoke.page.size = buf_page_size(ctx->used);
if (fl->ssrcount != channel_ctx->ssrcount) {
err = -ECONNRESET;
mutex_unlock(&channel_ctx->smd_mutex);
goto bail;
}
mutex_unlock(&channel_ctx->smd_mutex);
mutex_lock(&channel_ctx->rpmsg_mutex);
VERIFY(err, !IS_ERR_OR_NULL(channel_ctx->rpdev));
if (err) {
err = -ECONNRESET;
mutex_unlock(&channel_ctx->rpmsg_mutex);
goto bail;
}
err = rpmsg_send(channel_ctx->rpdev->ept, (void *)msg, sizeof(*msg));
trace_fastrpc_rpmsg_send(cid, (uint64_t)ctx, msg->invoke.header.ctx,
handle, ctx->sc, msg->invoke.page.addr, msg->invoke.page.size);
LOG_FASTRPC_GLINK_MSG(channel_ctx->ipc_log_ctx,
"sent pkt %pK (sz %d): ctx 0x%llx, handle 0x%x, sc 0x%x (rpmsg err %d)",
(void *)msg, sizeof(*msg),
msg->invoke.header.ctx, handle, ctx->sc, err);
mutex_unlock(&channel_ctx->rpmsg_mutex);
bail:
return err;
}
static void fastrpc_init(struct fastrpc_apps *me)
{
int i;
INIT_HLIST_HEAD(&me->drivers);
INIT_HLIST_HEAD(&me->maps);
spin_lock_init(&me->hlock);
me->channel = &gcinfo[0];
for (i = 0; i < NUM_CHANNELS; i++) {
init_completion(&me->channel[i].work);
init_completion(&me->channel[i].workport);
me->channel[i].sesscount = 0;
/* All channels are secure by default except CDSP */
me->channel[i].secure = SECURE_CHANNEL;
me->channel[i].unsigned_support = false;
mutex_init(&me->channel[i].smd_mutex);
mutex_init(&me->channel[i].rpmsg_mutex);
spin_lock_init(&me->channel[i].ctxlock);
}
/* Set CDSP channel to non secure */
me->channel[CDSP_DOMAIN_ID].secure = NON_SECURE_CHANNEL;
/* Set CDSP channel unsigned_support to true*/
me->channel[CDSP_DOMAIN_ID].unsigned_support = true;
}
static inline void fastrpc_pm_awake(struct fastrpc_file *fl, int channel_type)
{
struct fastrpc_apps *me = &gfa;
struct wakeup_source *wake_source = NULL;
/*
* Vote with PM to abort any suspend in progress and
* keep system awake for specified timeout
*/
if (channel_type == SECURE_CHANNEL)
wake_source = me->wake_source_secure;
else if (channel_type == NON_SECURE_CHANNEL)
wake_source = me->wake_source;
if (wake_source)
pm_wakeup_ws_event(wake_source, fl->ws_timeout, true);
}
static inline int fastrpc_wait_for_response(struct smq_invoke_ctx *ctx,
uint32_t kernel)
{
int interrupted = 0;
if (kernel)
wait_for_completion(&ctx->work);
else
interrupted = wait_for_completion_interruptible(&ctx->work);
return interrupted;
}
static void fastrpc_wait_for_completion(struct smq_invoke_ctx *ctx,
int *pInterrupted, uint32_t kernel)
{
int interrupted = 0, err = 0;
int jj;
bool wait_resp;
uint32_t wTimeout = FASTRPC_USER_EARLY_HINT_TIMEOUT;
uint32_t wakeTime = 0;
if (!ctx) {
/* This failure is not expected */
err = *pInterrupted = EFAULT;
pr_err("Error %d: adsprpc: %s: %s: ctx is NULL, cannot wait for response\n",
err, current->comm, __func__);
return;
}
wakeTime = ctx->earlyWakeTime;
do {
switch (ctx->rspFlags) {
/* try polling on completion with timeout */
case USER_EARLY_SIGNAL:
/* try wait if completion time is less than timeout */
/* disable preempt to avoid context switch latency */
preempt_disable();
jj = 0;
wait_resp = false;
for (; wakeTime < wTimeout && jj < wTimeout; jj++) {
wait_resp = try_wait_for_completion(&ctx->work);
if (wait_resp)
break;
udelay(1);
}
preempt_enable_no_resched();
if (!wait_resp) {
interrupted = fastrpc_wait_for_response(ctx,
kernel);
*pInterrupted = interrupted;
if (interrupted || ctx->isWorkDone)
return;
}
break;
/* busy poll on memory for actual job done */
case EARLY_RESPONSE:
err = poll_on_early_response(ctx);
/* Mark job done if poll on memory successful */
/* Wait for completion if poll on memory timoeut */
if (!err) {
ctx->isWorkDone = true;
} else if (!ctx->isWorkDone) {
pr_info("adsprpc: %s: %s: poll timeout for handle 0x%x, sc 0x%x\n",
__func__, current->comm, ctx->handle, ctx->sc);
interrupted = fastrpc_wait_for_response(ctx,
kernel);
*pInterrupted = interrupted;
if (interrupted || ctx->isWorkDone)
return;
}
break;
case COMPLETE_SIGNAL:
case NORMAL_RESPONSE:
interrupted = fastrpc_wait_for_response(ctx, kernel);
*pInterrupted = interrupted;
if (interrupted || ctx->isWorkDone)
return;
break;
default:
*pInterrupted = EBADR;
pr_err("Error: adsprpc: %s: unsupported response flags 0x%x for handle 0x%x, sc 0x%x\n",
current->comm, ctx->rspFlags, ctx->handle, ctx->sc);
return;
} /* end of switch */
} while (!ctx->isWorkDone);
}
static void fastrpc_update_invoke_count(uint32_t handle, int64_t *perf_counter,
struct timespec64 *invoket)
{
/* update invoke count for dynamic handles */
if (handle != FASTRPC_STATIC_HANDLE_LISTENER) {
int64_t *count = GET_COUNTER(perf_counter, PERF_INVOKE);
if (count)
*count += getnstimediff(invoket);
}
if (handle > FASTRPC_STATIC_HANDLE_MAX) {
int64_t *count = GET_COUNTER(perf_counter, PERF_COUNT);
if (count)
*count += 1;
}
}
static int fastrpc_internal_invoke(struct fastrpc_file *fl, uint32_t mode,
uint32_t kernel,
struct fastrpc_ioctl_invoke_crc *inv)
{
struct smq_invoke_ctx *ctx = NULL;
struct fastrpc_ioctl_invoke *invoke = &inv->inv;
int err = 0, interrupted = 0, cid = -1;
struct timespec64 invoket = {0};
int64_t *perf_counter = NULL;
cid = fl->cid;
VERIFY(err, cid >= ADSP_DOMAIN_ID && cid < NUM_CHANNELS);
if (err) {
err = -ECHRNG;
goto bail;
}
VERIFY(err, fl->sctx != NULL);
if (err) {
pr_err("adsprpc: ERROR: %s: user application %s domain is not set\n",
__func__, current->comm);
err = -EBADR;
goto bail;
}
if (fl->profile) {
perf_counter = getperfcounter(fl, PERF_COUNT);
ktime_get_real_ts64(&invoket);
}
if (!kernel) {
VERIFY(err, invoke->handle !=
FASTRPC_STATIC_HANDLE_PROCESS_GROUP);
VERIFY(err, invoke->handle !=
FASTRPC_STATIC_HANDLE_DSP_UTILITIES);
if (err) {
pr_err("adsprpc: ERROR: %s: user application %s trying to send a kernel RPC message to channel %d, handle 0x%x\n",
__func__, current->comm, cid, invoke->handle);
goto bail;
}
}
if (!kernel) {
err = context_restore_interrupted(fl, inv, &ctx);
if (err)
goto bail;
if (fl->sctx->smmu.faults)
err = FASTRPC_ENOSUCH;
if (err)
goto bail;
if (ctx) {
trace_fastrpc_context_restore(cid, (uint64_t)ctx,
ctx->msg.invoke.header.ctx,
ctx->handle, ctx->sc);
goto wait;
}
}
VERIFY(err, 0 == context_alloc(fl, kernel, inv, &ctx));
if (err)
goto bail;
if (REMOTE_SCALARS_LENGTH(ctx->sc)) {
PERF(fl->profile, GET_COUNTER(perf_counter, PERF_GETARGS),
VERIFY(err, 0 == get_args(kernel, ctx));
PERF_END);
if (err)
goto bail;
}
PERF(fl->profile, GET_COUNTER(perf_counter, PERF_INVARGS),
inv_args(ctx);
PERF_END);
PERF(fl->profile, GET_COUNTER(perf_counter, PERF_LINK),
VERIFY(err, 0 == fastrpc_invoke_send(ctx, kernel, invoke->handle));
PERF_END);
if (err)
goto bail;
wait:
fastrpc_wait_for_completion(ctx, &interrupted, kernel);
VERIFY(err, 0 == (err = interrupted));
if (err)
goto bail;
if (!ctx->isWorkDone) {
err = EPROTO;
pr_err("Error: adsprpc: %s: %s: WorkDone state is invalid for handle 0x%x, sc 0x%x\n",
__func__, current->comm, invoke->handle, ctx->sc);
goto bail;
}
PERF(fl->profile, GET_COUNTER(perf_counter, PERF_INVARGS),
inv_args(ctx);
PERF_END);
PERF(fl->profile, GET_COUNTER(perf_counter, PERF_PUTARGS),
VERIFY(err, 0 == (err = put_args(kernel, ctx, invoke->pra)));
PERF_END);
if (err)
goto bail;
VERIFY(err, 0 == (err = ctx->retval));
if (err)
goto bail;
bail:
if (ctx && interrupted == -ERESTARTSYS) {
trace_fastrpc_context_interrupt(cid, (uint64_t)ctx,
ctx->msg.invoke.header.ctx, ctx->handle, ctx->sc);
context_save_interrupted(ctx);
}
else if (ctx)
context_free(ctx);
if (fl->ssrcount != fl->apps->channel[cid].ssrcount)
err = ECONNRESET;
if (fl->profile && !interrupted)
fastrpc_update_invoke_count(invoke->handle, perf_counter,
&invoket);
return err;
}
static int fastrpc_get_spd_session(char *name, int *session, int *cid)
{
struct fastrpc_apps *me = &gfa;
int err = 0, i, j, match = 0;
for (i = 0; i < NUM_CHANNELS; i++) {
for (j = 0; j < NUM_SESSIONS; j++) {
if (!me->channel[i].spd[j].servloc_name)
continue;
if (!strcmp(name, me->channel[i].spd[j].servloc_name)) {
match = 1;
break;
}
}
if (match)
break;
}
VERIFY(err, i < NUM_CHANNELS && j < NUM_SESSIONS);
if (err)
goto bail;
*cid = i;
*session = j;
bail:
return err;
}
static int fastrpc_mmap_remove_pdr(struct fastrpc_file *fl);
static int fastrpc_channel_open(struct fastrpc_file *fl);
static int fastrpc_mmap_remove_ssr(struct fastrpc_file *fl, int locked);
static int fastrpc_init_process(struct fastrpc_file *fl,
struct fastrpc_ioctl_init_attrs *uproc)
{
int err = 0, rh_hyp_done = 0;
struct fastrpc_apps *me = &gfa;
struct fastrpc_ioctl_invoke_crc ioctl;
struct fastrpc_ioctl_init *init = &uproc->init;
struct smq_phy_page pages[1];
struct fastrpc_mmap *file = NULL, *mem = NULL;
struct fastrpc_buf *imem = NULL;
unsigned long imem_dma_attr = 0;
char *proc_name = NULL;
bool init_flags = init->flags == FASTRPC_INIT_CREATE ? true : false;
int proc_attrs = uproc->attrs & FASTRPC_MODE_UNSIGNED_MODULE;
int unsigned_request = proc_attrs && init_flags;
int cid = fl->cid;
struct fastrpc_channel_ctx *chan = &me->channel[cid];
if (chan->unsigned_support &&
fl->dev_minor == MINOR_NUM_DEV) {
/* Make sure third party applications */
/* can spawn only unsigned PD when */
/* channel configured as secure. */
if (chan->secure && !unsigned_request) {
err = -ECONNREFUSED;
goto bail;
}
}
VERIFY(err, 0 == (err = fastrpc_channel_open(fl)));
if (err)
goto bail;
if (init->flags == FASTRPC_INIT_ATTACH ||
init->flags == FASTRPC_INIT_ATTACH_SENSORS) {
remote_arg_t ra[1];
int tgid = fl->tgid;
if (fl->dev_minor == MINOR_NUM_DEV) {
err = -ECONNREFUSED;
pr_err("adsprpc: %s: untrusted app trying to attach to privileged DSP PD\n",
__func__);
return err;
}
ra[0].buf.pv = (void *)&tgid;
ra[0].buf.len = sizeof(tgid);
ioctl.inv.handle = FASTRPC_STATIC_HANDLE_PROCESS_GROUP;
ioctl.inv.sc = REMOTE_SCALARS_MAKE(0, 1, 0);
ioctl.inv.pra = ra;
ioctl.fds = NULL;
ioctl.attrs = NULL;
ioctl.crc = NULL;
if (init->flags == FASTRPC_INIT_ATTACH)
fl->pd = 0;
else if (init->flags == FASTRPC_INIT_ATTACH_SENSORS) {
if (fl->cid == ADSP_DOMAIN_ID)
fl->servloc_name =
SENSORS_PDR_ADSP_SERVICE_LOCATION_CLIENT_NAME;
else if (fl->cid == SDSP_DOMAIN_ID)
fl->servloc_name =
SENSORS_PDR_SLPI_SERVICE_LOCATION_CLIENT_NAME;
fl->pd = 2;
}
VERIFY(err, !(err = fastrpc_internal_invoke(fl,
FASTRPC_MODE_PARALLEL, 1, &ioctl)));
if (err)
goto bail;
} else if (init->flags == FASTRPC_INIT_CREATE) {
int memlen;
remote_arg_t ra[6];
int fds[6];
int mflags = 0;
struct {
int pgid;
unsigned int namelen;
unsigned int filelen;
unsigned int pageslen;
int attrs;
int siglen;
} inbuf;
spin_lock(&fl->hlock);
if (fl->in_process_create) {
err = -EALREADY;
pr_err("Already in create init process\n");
spin_unlock(&fl->hlock);
return err;
}
fl->in_process_create = true;
spin_unlock(&fl->hlock);
inbuf.pgid = fl->tgid;
inbuf.namelen = strlen(current->comm) + 1;
inbuf.filelen = init->filelen;
fl->pd = 1;
VERIFY(err, access_ok(0, (void __user *)init->file,
init->filelen));
if (err)
goto bail;
if (init->filelen) {
mutex_lock(&fl->map_mutex);
VERIFY(err, !fastrpc_mmap_create(fl, init->filefd, 0,
init->file, init->filelen, mflags, &file));
if (file)
file->is_filemap = true;
mutex_unlock(&fl->map_mutex);
if (err)
goto bail;
}
inbuf.pageslen = 1;
VERIFY(err, !init->mem);
if (err) {
err = -EINVAL;
pr_err("adsprpc: %s: %s: ERROR: donated memory allocated in userspace\n",
current->comm, __func__);
goto bail;
}
memlen = ALIGN(max(1024*1024*3, (int)init->filelen * 4),
1024*1024);
imem_dma_attr = DMA_ATTR_EXEC_MAPPING |
DMA_ATTR_DELAYED_UNMAP |
DMA_ATTR_NO_KERNEL_MAPPING |
DMA_ATTR_FORCE_NON_COHERENT;
err = fastrpc_buf_alloc(fl, memlen, imem_dma_attr, 0, 0, &imem);
if (err)
goto bail;
if (fl->init_mem)
fastrpc_buf_free(fl->init_mem, 0);
fl->init_mem = imem;
inbuf.pageslen = 1;
ra[0].buf.pv = (void *)&inbuf;
ra[0].buf.len = sizeof(inbuf);
fds[0] = -1;
ra[1].buf.pv = (void *)current->comm;
ra[1].buf.len = inbuf.namelen;
fds[1] = -1;
ra[2].buf.pv = (void *)init->file;
ra[2].buf.len = inbuf.filelen;
fds[2] = init->filefd;
pages[0].addr = imem->phys;
pages[0].size = imem->size;
ra[3].buf.pv = (void *)pages;
ra[3].buf.len = 1 * sizeof(*pages);
fds[3] = -1;
inbuf.attrs = uproc->attrs;
ra[4].buf.pv = (void *)&(inbuf.attrs);
ra[4].buf.len = sizeof(inbuf.attrs);
fds[4] = -1;
inbuf.siglen = uproc->siglen;
ra[5].buf.pv = (void *)&(inbuf.siglen);
ra[5].buf.len = sizeof(inbuf.siglen);
fds[5] = -1;
ioctl.inv.handle = FASTRPC_STATIC_HANDLE_PROCESS_GROUP;
ioctl.inv.sc = REMOTE_SCALARS_MAKE(6, 4, 0);
if (uproc->attrs)
ioctl.inv.sc = REMOTE_SCALARS_MAKE(7, 6, 0);
ioctl.inv.pra = ra;
ioctl.fds = fds;
ioctl.attrs = NULL;
ioctl.crc = NULL;
VERIFY(err, !(err = fastrpc_internal_invoke(fl,
FASTRPC_MODE_PARALLEL, 1, &ioctl)));
if (err)
goto bail;
} else if (init->flags == FASTRPC_INIT_CREATE_STATIC) {
remote_arg_t ra[3];
uint64_t phys = 0;
size_t size = 0;
int fds[3];
struct {
int pgid;
unsigned int namelen;
unsigned int pageslen;
} inbuf;
if (fl->dev_minor == MINOR_NUM_DEV) {
err = -ECONNREFUSED;
pr_err("adsprpc: %s: untrusted app trying to attach to audio PD\n",
__func__);
return err;
}
if (!init->filelen)
goto bail;
proc_name = kzalloc(init->filelen + 1, GFP_KERNEL);
VERIFY(err, !IS_ERR_OR_NULL(proc_name));
if (err)
goto bail;
VERIFY(err, 0 == copy_from_user((void *)proc_name,
(void __user *)init->file, init->filelen));
if (err)
goto bail;
fl->pd = 1;
inbuf.pgid = current->tgid;
inbuf.namelen = init->filelen;
inbuf.pageslen = 0;
if (!strcmp(proc_name, "audiopd")) {
fl->servloc_name =
AUDIO_PDR_SERVICE_LOCATION_CLIENT_NAME;
VERIFY(err, !fastrpc_mmap_remove_pdr(fl));
if (err)
goto bail;
}
if (!me->staticpd_flags && !(me->legacy_remote_heap)) {
inbuf.pageslen = 1;
mutex_lock(&fl->map_mutex);
err = fastrpc_mmap_create(fl, -1, 0, init->mem,
init->memlen, ADSP_MMAP_REMOTE_HEAP_ADDR,
&mem);
if (mem)
mem->is_filemap = true;
mutex_unlock(&fl->map_mutex);
if (err)
goto bail;
phys = mem->phys;
size = mem->size;
if (me->channel[fl->cid].rhvm.vmid) {
err = hyp_assign_phys(phys,
(uint64_t)size, hlosvm, 1,
me->channel[fl->cid].rhvm.vmid,
me->channel[fl->cid].rhvm.vmperm,
me->channel[fl->cid].rhvm.vmcount);
if (err) {
pr_err("adsprpc: %s: rh hyp assign failed with %d for phys 0x%llx, size %zd\n",
__func__, err, phys, size);
goto bail;
}
rh_hyp_done = 1;
}
me->staticpd_flags = 1;
}
ra[0].buf.pv = (void *)&inbuf;
ra[0].buf.len = sizeof(inbuf);
fds[0] = -1;
ra[1].buf.pv = (void *)proc_name;
ra[1].buf.len = inbuf.namelen;
fds[1] = -1;
pages[0].addr = phys;
pages[0].size = size;
ra[2].buf.pv = (void *)pages;
ra[2].buf.len = sizeof(*pages);
fds[2] = -1;
ioctl.inv.handle = FASTRPC_STATIC_HANDLE_PROCESS_GROUP;
ioctl.inv.sc = REMOTE_SCALARS_MAKE(8, 3, 0);
ioctl.inv.pra = ra;
ioctl.fds = NULL;
ioctl.attrs = NULL;
ioctl.crc = NULL;
VERIFY(err, !(err = fastrpc_internal_invoke(fl,
FASTRPC_MODE_PARALLEL, 1, &ioctl)));
if (err)
goto bail;
} else {
err = -ENOTTY;
goto bail;
}
fl->dsp_proc_init = 1;
bail:
kfree(proc_name);
if (err && (init->flags == FASTRPC_INIT_CREATE_STATIC))
me->staticpd_flags = 0;
if (mem && err) {
if (mem->flags == ADSP_MMAP_REMOTE_HEAP_ADDR
&& me->channel[fl->cid].rhvm.vmid && rh_hyp_done) {
int hyp_err = 0;
hyp_err = hyp_assign_phys(mem->phys,
(uint64_t)mem->size,
me->channel[fl->cid].rhvm.vmid,
me->channel[fl->cid].rhvm.vmcount,
hlosvm, hlosvmperm, 1);
if (hyp_err)
pr_warn("adsprpc: %s: %s: rh hyp unassign failed with %d for phys 0x%llx of size %zd\n",
__func__, current->comm,
hyp_err, mem->phys, mem->size);
}
mutex_lock(&fl->map_mutex);
fastrpc_mmap_free(mem, 0);
mutex_unlock(&fl->map_mutex);
}
if (err) {
if (!IS_ERR_OR_NULL(fl->init_mem)) {
fastrpc_buf_free(fl->init_mem, 0);
fl->init_mem = NULL;
}
}
if (file) {
mutex_lock(&fl->map_mutex);
fastrpc_mmap_free(file, 0);
mutex_unlock(&fl->map_mutex);
}
if (init->flags == FASTRPC_INIT_CREATE) {
spin_lock(&fl->hlock);
fl->in_process_create = false;
spin_unlock(&fl->hlock);
}
return err;
}
static int fastrpc_send_cpuinfo_to_dsp(struct fastrpc_file *fl)
{
int err = 0;
uint64_t cpuinfo = 0;
struct fastrpc_apps *me = &gfa;
struct fastrpc_ioctl_invoke_crc ioctl;
remote_arg_t ra[2];
int cid = -1;
if (!fl) {
err = -EBADF;
goto bail;
}
cid = fl->cid;
VERIFY(err, cid >= ADSP_DOMAIN_ID && cid < NUM_CHANNELS);
if (err) {
err = -ECHRNG;
pr_err("invalid channel 0x%zx set for session\n\n",
cid);
goto bail;
}
cpuinfo = me->channel[cid].cpuinfo_todsp;
/* return success if already updated to remote processor */
if (me->channel[cid].cpuinfo_status)
return 0;
ra[0].buf.pv = (void *)&cpuinfo;
ra[0].buf.len = sizeof(cpuinfo);
ioctl.inv.handle = FASTRPC_STATIC_HANDLE_DSP_UTILITIES;
ioctl.inv.sc = REMOTE_SCALARS_MAKE(1, 1, 0);
ioctl.inv.pra = ra;
ioctl.fds = NULL;
ioctl.attrs = NULL;
ioctl.crc = NULL;
fl->pd = 1;
err = fastrpc_internal_invoke(fl, FASTRPC_MODE_PARALLEL, 1, &ioctl);
if (!err)
me->channel[cid].cpuinfo_status = true;
bail:
return err;
}
static int fastrpc_get_info_from_dsp(struct fastrpc_file *fl,
uint32_t *dsp_attr_buf,
uint32_t dsp_attr_buf_len,
uint32_t domain)
{
int err = 0, dsp_support = 0;
struct fastrpc_ioctl_invoke_crc ioctl;
remote_arg_t ra[2];
struct fastrpc_apps *me = &gfa;
// Querying device about DSP support
switch (domain) {
case ADSP_DOMAIN_ID:
case SDSP_DOMAIN_ID:
case CDSP_DOMAIN_ID:
if (me->channel[domain].issubsystemup)
dsp_support = 1;
break;
case MDSP_DOMAIN_ID:
//Modem not supported for fastRPC
break;
default:
dsp_support = 0;
break;
}
dsp_attr_buf[0] = dsp_support;
if (dsp_support == 0) {
err = -ENOTCONN;
goto bail;
}
err = fastrpc_channel_open(fl);
if (err)
goto bail;
ra[0].buf.pv = (void *)&dsp_attr_buf_len;
ra[0].buf.len = sizeof(dsp_attr_buf_len);
ra[1].buf.pv = (void *)(&dsp_attr_buf[1]);
ra[1].buf.len = dsp_attr_buf_len * sizeof(uint32_t);
ioctl.inv.handle = FASTRPC_STATIC_HANDLE_DSP_UTILITIES;
ioctl.inv.sc = REMOTE_SCALARS_MAKE(0, 1, 1);
ioctl.inv.pra = ra;
ioctl.fds = NULL;
ioctl.attrs = NULL;
ioctl.crc = NULL;
fl->pd = 1;
err = fastrpc_internal_invoke(fl, FASTRPC_MODE_PARALLEL, 1, &ioctl);
bail:
if (err)
pr_err("adsprpc: %s: %s: could not obtain dsp information, err val 0x%x\n",
current->comm, __func__, err);
return err;
}
static int fastrpc_get_info_from_kernel(
struct fastrpc_ioctl_dsp_capabilities *dsp_cap,
struct fastrpc_file *fl)
{
int err = 0;
uint32_t domain_support;
uint32_t domain = dsp_cap->domain;
if (!gcinfo[domain].dsp_cap_kernel.is_cached) {
/*
* Information not on kernel, query device for information
* and cache on kernel
*/
err = fastrpc_get_info_from_dsp(fl, dsp_cap->dsp_attributes,
FASTRPC_MAX_DSP_ATTRIBUTES - 1,
domain);
if (err)
goto bail;
domain_support = dsp_cap->dsp_attributes[0];
switch (domain_support) {
case 0:
memset(dsp_cap->dsp_attributes, 0,
sizeof(dsp_cap->dsp_attributes));
memset(&gcinfo[domain].dsp_cap_kernel.dsp_attributes,
0, sizeof(dsp_cap->dsp_attributes));
break;
case 1:
memcpy(&gcinfo[domain].dsp_cap_kernel.dsp_attributes,
dsp_cap->dsp_attributes,
sizeof(dsp_cap->dsp_attributes));
break;
default:
err = -1;
/*
* Reset is_cached flag to 0 so subsequent calls
* can try to query dsp again
*/
gcinfo[domain].dsp_cap_kernel.is_cached = 0;
pr_warn("adsprpc: %s: %s: returned bad domain support value %d\n",
current->comm,
__func__,
domain_support);
goto bail;
}
gcinfo[domain].dsp_cap_kernel.is_cached = 1;
} else {
// Information on Kernel, pass it to user
memcpy(dsp_cap->dsp_attributes,
&gcinfo[domain].dsp_cap_kernel.dsp_attributes,
sizeof(dsp_cap->dsp_attributes));
}
bail:
return err;
}
static int fastrpc_release_current_dsp_process(struct fastrpc_file *fl)
{
int err = 0;
struct fastrpc_ioctl_invoke_crc ioctl;
remote_arg_t ra[1];
int tgid = 0;
int cid = -1;
if (!fl) {
err = -EBADF;
goto bail;
}
cid = fl->cid;
VERIFY(err, cid >= ADSP_DOMAIN_ID && cid < NUM_CHANNELS);
if (err) {
err = -ECHRNG;
goto bail;
}
VERIFY(err, fl->sctx != NULL);
if (err)
goto bail;
VERIFY(err, fl->apps->channel[cid].rpdev != NULL);
if (err)
goto bail;
VERIFY(err, fl->apps->channel[cid].issubsystemup == 1);
if (err) {
wait_for_completion(&fl->shutdown);
goto bail;
}
tgid = fl->tgid;
ra[0].buf.pv = (void *)&tgid;
ra[0].buf.len = sizeof(tgid);
ioctl.inv.handle = FASTRPC_STATIC_HANDLE_PROCESS_GROUP;
ioctl.inv.sc = REMOTE_SCALARS_MAKE(1, 1, 0);
ioctl.inv.pra = ra;
ioctl.fds = NULL;
ioctl.attrs = NULL;
ioctl.crc = NULL;
VERIFY(err, 0 == (err = fastrpc_internal_invoke(fl,
FASTRPC_MODE_PARALLEL, 1, &ioctl)));
if (err && fl->dsp_proc_init)
pr_err("adsprpc: %s: releasing DSP process failed with %d (0x%x) for %s\n",
__func__, err, err, current->comm);
bail:
return err;
}
static int fastrpc_unmap_on_dsp(struct fastrpc_file *fl,
uintptr_t raddr, uint64_t phys, size_t size, uint32_t flags)
{
struct fastrpc_ioctl_invoke_crc ioctl;
remote_arg_t ra[1] = {};
int err = 0;
struct {
int pid;
uintptr_t vaddrout;
size_t size;
} inargs;
inargs.pid = fl->tgid;
inargs.size = size;
inargs.vaddrout = raddr;
ra[0].buf.pv = (void *)&inargs;
ra[0].buf.len = sizeof(inargs);
ioctl.inv.handle = FASTRPC_STATIC_HANDLE_PROCESS_GROUP;
if (fl->apps->compat)
ioctl.inv.sc = REMOTE_SCALARS_MAKE(5, 1, 0);
else
ioctl.inv.sc = REMOTE_SCALARS_MAKE(3, 1, 0);
ioctl.inv.pra = ra;
ioctl.fds = NULL;
ioctl.attrs = NULL;
ioctl.crc = NULL;
VERIFY(err, 0 == (err = fastrpc_internal_invoke(fl,
FASTRPC_MODE_PARALLEL, 1, &ioctl)));
if (err)
goto bail;
bail:
return err;
}
static int fastrpc_mmap_on_dsp(struct fastrpc_file *fl, uint32_t flags,
uintptr_t va, uint64_t phys,
size_t size, int refs, uintptr_t *raddr)
{
struct fastrpc_ioctl_invoke_crc ioctl;
struct fastrpc_apps *me = &gfa;
struct smq_phy_page page;
int num = 1;
remote_arg_t ra[3];
int err = 0;
struct {
int pid;
uint32_t flags;
uintptr_t vaddrin;
int num;
} inargs;
struct {
uintptr_t vaddrout;
} routargs;
int cid = -1;
if (!fl) {
err = -EBADF;
goto bail;
}
cid = fl->cid;
inargs.pid = fl->tgid;
inargs.vaddrin = (uintptr_t)va;
inargs.flags = flags;
inargs.num = fl->apps->compat ? num * sizeof(page) : num;
ra[0].buf.pv = (void *)&inargs;
ra[0].buf.len = sizeof(inargs);
page.addr = phys;
page.size = size;
ra[1].buf.pv = (void *)&page;
ra[1].buf.len = num * sizeof(page);
ra[2].buf.pv = (void *)&routargs;
ra[2].buf.len = sizeof(routargs);
ioctl.inv.handle = FASTRPC_STATIC_HANDLE_PROCESS_GROUP;
if (fl->apps->compat)
ioctl.inv.sc = REMOTE_SCALARS_MAKE(4, 2, 1);
else
ioctl.inv.sc = REMOTE_SCALARS_MAKE(2, 2, 1);
ioctl.inv.pra = ra;
ioctl.fds = NULL;
ioctl.attrs = NULL;
ioctl.crc = NULL;
VERIFY(err, 0 == (err = fastrpc_internal_invoke(fl,
FASTRPC_MODE_PARALLEL, 1, &ioctl)));
*raddr = (uintptr_t)routargs.vaddrout;
if (err)
goto bail;
if (flags == ADSP_MMAP_REMOTE_HEAP_ADDR) {
VERIFY(err, cid >= ADSP_DOMAIN_ID && cid < NUM_CHANNELS);
if (err) {
err = -ECHRNG;
pr_err("invalid channel 0x%zx set for session\n",
cid);
goto bail;
}
}
if (flags == ADSP_MMAP_REMOTE_HEAP_ADDR
&& me->channel[cid].rhvm.vmid && refs == 1) {
err = hyp_assign_phys(phys, (uint64_t)size,
hlosvm, 1, me->channel[cid].rhvm.vmid,
me->channel[cid].rhvm.vmperm,
me->channel[cid].rhvm.vmcount);
if (err) {
pr_err("adsprpc: %s: %s: rh hyp assign failed with %d for phys 0x%llx, size %zd\n",
__func__, current->comm,
err, phys, size);
err = fastrpc_unmap_on_dsp(fl,
*raddr, phys, size, flags);
if (err) {
pr_err("adsprpc: %s: %s: failed to unmap %d for phys 0x%llx, size %zd\n",
__func__, current->comm,
err, phys, size);
}
goto bail;
}
}
bail:
return err;
}
static int fastrpc_munmap_on_dsp_rh(struct fastrpc_file *fl, uint64_t phys,
size_t size, uint32_t flags, int locked)
{
int err = 0;
struct fastrpc_apps *me = &gfa;
int tgid = 0;
int destVM[1] = {VMID_HLOS};
int destVMperm[1] = {PERM_READ | PERM_WRITE | PERM_EXEC};
int cid = -1;
if (!fl) {
err = -EBADF;
goto bail;
}
cid = fl->cid;
VERIFY(err, cid >= ADSP_DOMAIN_ID && cid < NUM_CHANNELS);
if (err) {
err = -ECHRNG;
pr_err("invalid channel 0x%zx set for session\n",
cid);
goto bail;
}
if (flags == ADSP_MMAP_HEAP_ADDR) {
struct fastrpc_ioctl_invoke_crc ioctl;
remote_arg_t ra[2];
int err = 0;
struct {
uint8_t skey;
} routargs;
tgid = fl->tgid;
ra[0].buf.pv = (void *)&tgid;
ra[0].buf.len = sizeof(tgid);
ra[1].buf.pv = (void *)&routargs;
ra[1].buf.len = sizeof(routargs);
ioctl.inv.handle = FASTRPC_STATIC_HANDLE_PROCESS_GROUP;
ioctl.inv.sc = REMOTE_SCALARS_MAKE(9, 1, 1);
ioctl.inv.pra = ra;
ioctl.fds = NULL;
ioctl.attrs = NULL;
ioctl.crc = NULL;
if (locked) {
mutex_unlock(&fl->map_mutex);
mutex_unlock(&me->channel[cid].smd_mutex);
}
VERIFY(err, 0 == (err = fastrpc_internal_invoke(fl,
FASTRPC_MODE_PARALLEL, 1, &ioctl)));
if (locked) {
mutex_lock(&me->channel[cid].smd_mutex);
mutex_lock(&fl->map_mutex);
}
if (err)
goto bail;
} else if (flags == ADSP_MMAP_REMOTE_HEAP_ADDR) {
if (me->channel[cid].rhvm.vmid) {
err = hyp_assign_phys(phys,
(uint64_t)size,
me->channel[cid].rhvm.vmid,
me->channel[cid].rhvm.vmcount,
destVM, destVMperm, 1);
if (err) {
pr_err("adsprpc: %s: %s: rh hyp unassign failed with %d for phys 0x%llx, size %zd\n",
__func__, current->comm,
err, phys, size);
goto bail;
}
}
}
bail:
return err;
}
static int fastrpc_munmap_on_dsp(struct fastrpc_file *fl, uintptr_t raddr,
uint64_t phys, size_t size, uint32_t flags)
{
int err = 0;
VERIFY(err, 0 == (err = fastrpc_unmap_on_dsp(fl, raddr, phys,
size, flags)));
if (err)
goto bail;
if (flags == ADSP_MMAP_HEAP_ADDR ||
flags == ADSP_MMAP_REMOTE_HEAP_ADDR) {
VERIFY(err, !fastrpc_munmap_on_dsp_rh(fl, phys, size,
flags, 0));
if (err)
goto bail;
}
bail:
return err;
}
static int fastrpc_mmap_remove_ssr(struct fastrpc_file *fl, int locked)
{
struct fastrpc_mmap *match = NULL, *map = NULL;
struct hlist_node *n = NULL;
int err = 0, ret = 0;
struct fastrpc_apps *me = &gfa;
struct ramdump_segment *ramdump_segments_rh = NULL;
VERIFY(err, fl->cid == RH_CID);
if (err)
goto bail;
do {
match = NULL;
spin_lock(&me->hlock);
hlist_for_each_entry_safe(map, n, &me->maps, hn) {
match = map;
hlist_del_init(&map->hn);
break;
}
spin_unlock(&me->hlock);
if (match) {
err = fastrpc_munmap_on_dsp_rh(fl, match->phys,
match->size, match->flags, locked);
if (err)
goto bail;
if (me->ramdump_handle && me->enable_ramdump) {
ramdump_segments_rh = kcalloc(1,
sizeof(struct ramdump_segment), GFP_KERNEL);
if (ramdump_segments_rh) {
ramdump_segments_rh->address =
match->phys;
ramdump_segments_rh->size = match->size;
ret = do_elf_ramdump(
me->ramdump_handle,
ramdump_segments_rh, 1);
if (ret < 0)
pr_err("adsprpc: %s: unable to dump heap (err %d)\n",
__func__, ret);
kfree(ramdump_segments_rh);
}
}
fastrpc_mmap_free(match, 0);
}
} while (match);
me->enable_ramdump = false;
bail:
if (err && match)
fastrpc_mmap_add(match);
return err;
}
static int fastrpc_mmap_remove_pdr(struct fastrpc_file *fl)
{
struct fastrpc_apps *me = &gfa;
int session = 0, err = 0, cid = -1;
if (!fl) {
err = -EBADF;
goto bail;
}
err = fastrpc_get_spd_session(fl->servloc_name,
&session, &cid);
if (err)
goto bail;
VERIFY(err, cid == fl->cid);
if (err)
goto bail;
if (!me->channel[cid].spd[session].ispdup) {
err = -ENOTCONN;
goto bail;
}
if (me->channel[cid].spd[session].pdrcount !=
me->channel[cid].spd[session].prevpdrcount) {
err = fastrpc_mmap_remove_ssr(fl, 0);
if (err)
pr_warn("adsprpc: %s: %s: failed to unmap remote heap (err %d)\n",
__func__, current->comm, err);
me->channel[cid].spd[session].prevpdrcount =
me->channel[cid].spd[session].pdrcount;
}
bail:
return err;
}
static inline void get_fastrpc_ioctl_mmap_64(
struct fastrpc_ioctl_mmap_64 *mmap64,
struct fastrpc_ioctl_mmap *immap)
{
immap->fd = mmap64->fd;
immap->flags = mmap64->flags;
immap->vaddrin = (uintptr_t)mmap64->vaddrin;
immap->size = mmap64->size;
}
static inline void put_fastrpc_ioctl_mmap_64(
struct fastrpc_ioctl_mmap_64 *mmap64,
struct fastrpc_ioctl_mmap *immap)
{
mmap64->vaddrout = (uint64_t)immap->vaddrout;
}
static inline void get_fastrpc_ioctl_munmap_64(
struct fastrpc_ioctl_munmap_64 *munmap64,
struct fastrpc_ioctl_munmap *imunmap)
{
imunmap->vaddrout = (uintptr_t)munmap64->vaddrout;
imunmap->size = munmap64->size;
}
static int fastrpc_internal_munmap(struct fastrpc_file *fl,
struct fastrpc_ioctl_munmap *ud)
{
int err = 0;
struct fastrpc_mmap *map = NULL;
struct fastrpc_buf *rbuf = NULL, *free = NULL;
struct hlist_node *n;
VERIFY(err, fl->dsp_proc_init == 1);
if (err) {
pr_err("adsprpc: ERROR: %s: user application %s trying to unmap without initialization\n",
__func__, current->comm);
err = EBADR;
return err;
}
mutex_lock(&fl->internal_map_mutex);
spin_lock(&fl->hlock);
hlist_for_each_entry_safe(rbuf, n, &fl->remote_bufs, hn_rem) {
if (rbuf->raddr && ((rbuf->flags == ADSP_MMAP_ADD_PAGES) ||
(rbuf->flags == ADSP_MMAP_ADD_PAGES_LLC))) {
if ((rbuf->raddr == ud->vaddrout) &&
(rbuf->size == ud->size)) {
free = rbuf;
break;
}
}
}
spin_unlock(&fl->hlock);
if (free) {
VERIFY(err, !fastrpc_munmap_on_dsp(fl, free->raddr,
free->phys, free->size, free->flags));
if (err)
goto bail;
fastrpc_buf_free(rbuf, 0);
mutex_unlock(&fl->internal_map_mutex);
return err;
}
mutex_lock(&fl->map_mutex);
VERIFY(err, !fastrpc_mmap_remove(fl, ud->vaddrout, ud->size, &map));
mutex_unlock(&fl->map_mutex);
if (err)
goto bail;
VERIFY(err, map != NULL);
if (err) {
err = -EINVAL;
goto bail;
}
VERIFY(err, !fastrpc_munmap_on_dsp(fl, map->raddr,
map->phys, map->size, map->flags));
if (err)
goto bail;
mutex_lock(&fl->map_mutex);
fastrpc_mmap_free(map, 0);
mutex_unlock(&fl->map_mutex);
bail:
if (err && map) {
mutex_lock(&fl->map_mutex);
fastrpc_mmap_add(map);
mutex_unlock(&fl->map_mutex);
}
mutex_unlock(&fl->internal_map_mutex);
return err;
}
/*
* fastrpc_internal_munmap_fd can only be used for buffers
* mapped with persist attributes. This can only be called
* once for any persist buffer
*/
static int fastrpc_internal_munmap_fd(struct fastrpc_file *fl,
struct fastrpc_ioctl_munmap_fd *ud)
{
int err = 0;
struct fastrpc_mmap *map = NULL;
VERIFY(err, (fl && ud));
if (err)
return err;
VERIFY(err, fl->dsp_proc_init == 1);
if (err) {
pr_err("adsprpc: ERROR: %s: user application %s trying to unmap without initialization\n",
__func__, current->comm);
err = EBADR;
return err;
}
mutex_lock(&fl->internal_map_mutex);
mutex_lock(&fl->map_mutex);
if (fastrpc_mmap_find(fl, ud->fd, ud->va, ud->len, 0, 0, &map)) {
pr_err("adsprpc: mapping not found to unmap fd 0x%x, va 0x%llx, len 0x%x\n",
ud->fd, (unsigned long long)ud->va,
(unsigned int)ud->len);
err = -1;
mutex_unlock(&fl->map_mutex);
goto bail;
}
if (map && (map->attr & FASTRPC_ATTR_KEEP_MAP)) {
map->attr = map->attr & (~FASTRPC_ATTR_KEEP_MAP);
fastrpc_mmap_free(map, 0);
}
mutex_unlock(&fl->map_mutex);
bail:
mutex_unlock(&fl->internal_map_mutex);
return err;
}
static int fastrpc_internal_mmap(struct fastrpc_file *fl,
struct fastrpc_ioctl_mmap *ud)
{
struct fastrpc_mmap *map = NULL;
struct fastrpc_buf *rbuf = NULL;
unsigned long dma_attr = 0;
uintptr_t raddr = 0;
int err = 0;
VERIFY(err, fl->dsp_proc_init == 1);
if (err) {
pr_err("adsprpc: ERROR: %s: user application %s trying to map without initialization\n",
__func__, current->comm);
err = EBADR;
return err;
}
mutex_lock(&fl->internal_map_mutex);
if ((ud->flags == ADSP_MMAP_ADD_PAGES) ||
(ud->flags == ADSP_MMAP_ADD_PAGES_LLC)) {
if (ud->vaddrin) {
err = EINVAL;
pr_err("adsprpc: %s: %s: ERROR: adding user allocated pages is not supported\n",
current->comm, __func__);
goto bail;
}
dma_attr = DMA_ATTR_EXEC_MAPPING |
DMA_ATTR_DELAYED_UNMAP |
DMA_ATTR_NO_KERNEL_MAPPING |
DMA_ATTR_FORCE_NON_COHERENT;
if (ud->flags == ADSP_MMAP_ADD_PAGES_LLC)
dma_attr |= DMA_ATTR_IOMMU_USE_UPSTREAM_HINT;
err = fastrpc_buf_alloc(fl, ud->size, dma_attr, ud->flags,
1, &rbuf);
if (err)
goto bail;
err = fastrpc_mmap_on_dsp(fl, ud->flags, 0,
rbuf->phys, rbuf->size, 0, &raddr);
if (err)
goto bail;
rbuf->raddr = raddr;
} else {
uintptr_t va_to_dsp;
mutex_lock(&fl->map_mutex);
VERIFY(err, !fastrpc_mmap_create(fl, ud->fd, 0,
(uintptr_t)ud->vaddrin, ud->size,
ud->flags, &map));
mutex_unlock(&fl->map_mutex);
if (err)
goto bail;
if (ud->flags == ADSP_MMAP_HEAP_ADDR ||
ud->flags == ADSP_MMAP_REMOTE_HEAP_ADDR)
va_to_dsp = 0;
else
va_to_dsp = (uintptr_t)map->va;
VERIFY(err, 0 == fastrpc_mmap_on_dsp(fl, ud->flags, va_to_dsp,
map->phys, map->size, map->refs, &raddr));
if (err)
goto bail;
map->raddr = raddr;
}
ud->vaddrout = raddr;
bail:
if (err) {
if (map) {
mutex_lock(&fl->map_mutex);
fastrpc_mmap_free(map, 0);
mutex_unlock(&fl->map_mutex);
}
if (!IS_ERR_OR_NULL(rbuf))
fastrpc_buf_free(rbuf, 0);
}
mutex_unlock(&fl->internal_map_mutex);
return err;
}
static void fastrpc_context_list_dtor(struct fastrpc_file *fl);
static int fastrpc_session_alloc_locked(struct fastrpc_channel_ctx *chan,
int secure, struct fastrpc_session_ctx **session)
{
struct fastrpc_apps *me = &gfa;
uint64_t idx = 0;
int err = 0;
if (chan->sesscount) {
for (idx = 0; idx < chan->sesscount; ++idx) {
if (!chan->session[idx].used &&
chan->session[idx].smmu.secure == secure) {
chan->session[idx].used = 1;
break;
}
}
if (idx >= chan->sesscount) {
err = EUSERS;
pr_err("adsprpc: ERROR %d: %s: max concurrent sessions limit (%d) already reached on %s\n",
err, __func__, chan->sesscount, chan->subsys);
goto bail;
}
chan->session[idx].smmu.faults = 0;
} else {
VERIFY(err, me->dev != NULL);
if (err) {
err = -ECONNREFUSED;
goto bail;
}
chan->session[0].dev = me->dev;
chan->session[0].smmu.dev = me->dev;
}
*session = &chan->session[idx];
bail:
return err;
}
static inline int get_cid_from_rpdev(struct rpmsg_device *rpdev)
{
int err = 0, cid = -1;
VERIFY(err, !IS_ERR_OR_NULL(rpdev));
if (err)
return -EINVAL;
if (!strcmp(rpdev->dev.parent->of_node->name, "cdsp"))
cid = CDSP_DOMAIN_ID;
else if (!strcmp(rpdev->dev.parent->of_node->name, "adsp"))
cid = ADSP_DOMAIN_ID;
else if (!strcmp(rpdev->dev.parent->of_node->name, "dsps"))
cid = SDSP_DOMAIN_ID;
else if (!strcmp(rpdev->dev.parent->of_node->name, "mdsp"))
cid = MDSP_DOMAIN_ID;
return cid;
}
static int fastrpc_rpmsg_probe(struct rpmsg_device *rpdev)
{
int err = 0;
int cid = -1;
VERIFY(err, !IS_ERR_OR_NULL(rpdev));
if (err)
return -EINVAL;
cid = get_cid_from_rpdev(rpdev);
VERIFY(err, cid >= ADSP_DOMAIN_ID && cid < NUM_CHANNELS);
if (err)
goto bail;
mutex_lock(&gcinfo[cid].rpmsg_mutex);
gcinfo[cid].rpdev = rpdev;
mutex_unlock(&gcinfo[cid].rpmsg_mutex);
pr_info("adsprpc: %s: opened rpmsg channel for %s\n",
__func__, gcinfo[cid].subsys);
#if IS_ENABLED(CONFIG_ADSPRPC_DEBUG)
if (!gcinfo[cid].ipc_log_ctx)
gcinfo[cid].ipc_log_ctx =
ipc_log_context_create(FASTRPC_GLINK_LOG_PAGES,
gcinfo[cid].name, 0);
if (!gcinfo[cid].ipc_log_ctx)
pr_warn("adsprpc: %s: failed to create IPC log context for %s\n",
__func__, gcinfo[cid].subsys);
else
pr_info("adsprpc: %s: enabled IPC logging for %s\n",
__func__, gcinfo[cid].subsys);
#endif
bail:
if (err)
pr_err("adsprpc: rpmsg probe of %s cid %d failed\n",
rpdev->dev.parent->of_node->name, cid);
return err;
}
static void fastrpc_rpmsg_remove(struct rpmsg_device *rpdev)
{
int err = 0;
int cid = -1;
struct fastrpc_apps *me = &gfa;
VERIFY(err, !IS_ERR_OR_NULL(rpdev));
if (err)
return;
cid = get_cid_from_rpdev(rpdev);
VERIFY(err, cid >= ADSP_DOMAIN_ID && cid < NUM_CHANNELS);
if (err)
goto bail;
mutex_lock(&gcinfo[cid].rpmsg_mutex);
gcinfo[cid].rpdev = NULL;
mutex_unlock(&gcinfo[cid].rpmsg_mutex);
fastrpc_notify_drivers(me, cid);
pr_info("adsprpc: %s: closed rpmsg channel of %s\n",
__func__, gcinfo[cid].subsys);
bail:
if (err)
pr_err("adsprpc: rpmsg remove of %s cid %d failed\n",
rpdev->dev.parent->of_node->name, cid);
}
static int fastrpc_rpmsg_callback(struct rpmsg_device *rpdev, void *data,
int len, void *priv, u32 addr)
{
struct smq_invoke_rsp *rsp = (struct smq_invoke_rsp *)data;
struct smq_invoke_rspv2 *rspv2 = NULL;
struct fastrpc_apps *me = &gfa;
uint32_t index, rspFlags = 0, earlyWakeTime = 0;
int err = 0, cid = -1;
struct fastrpc_channel_ctx *chan = NULL;
unsigned long irq_flags = 0;
cid = get_cid_from_rpdev(rpdev);
VERIFY(err, (cid >= ADSP_DOMAIN_ID && cid <= NUM_CHANNELS));
if (err)
goto bail;
chan = &me->channel[cid];
VERIFY(err, (rsp && len >= sizeof(*rsp)));
if (err)
goto bail;
if (len >= sizeof(struct smq_invoke_rspv2))
rspv2 = (struct smq_invoke_rspv2 *)data;
if (rspv2) {
earlyWakeTime = rspv2->earlyWakeTime;
rspFlags = rspv2->flags;
}
trace_fastrpc_rpmsg_response(cid, rsp->ctx,
rsp->retval, rspFlags, earlyWakeTime);
#if IS_ENABLED(CONFIG_ADSPRPC_DEBUG)
if (cid >= ADSP_DOMAIN_ID && cid < NUM_CHANNELS) {
LOG_FASTRPC_GLINK_MSG(gcinfo[cid].ipc_log_ctx,
"recvd pkt %pK (sz %d): ctx 0x%llx, retVal %d, flags %u, earlyWake %u",
data, len, rsp->ctx, rsp->retval, rspFlags, earlyWakeTime);
}
#endif
index = (uint32_t)((rsp->ctx & FASTRPC_CTXID_MASK) >> 4);
VERIFY(err, index < FASTRPC_CTX_MAX);
if (err)
goto bail;
spin_lock_irqsave(&chan->ctxlock, irq_flags);
VERIFY(err, !IS_ERR_OR_NULL(chan->ctxtable[index]));
if (err)
goto bail_unlock;
VERIFY(err, ((chan->ctxtable[index]->ctxid ==
(rsp->ctx & ~CONTEXT_PD_CHECK)) &&
chan->ctxtable[index]->magic ==
FASTRPC_CTX_MAGIC));
if (err)
goto bail_unlock;
if (rspv2) {
VERIFY(err, rspv2->version == FASTRPC_RSP_VERSION2);
if (err)
goto bail_unlock;
}
context_notify_user(chan->ctxtable[index], rsp->retval,
rspFlags, earlyWakeTime);
bail_unlock:
spin_unlock_irqrestore(&chan->ctxlock, irq_flags);
bail:
if (err)
pr_err("adsprpc: ERROR: %s: invalid response (data %pK, len %d) from remote subsystem (err %d)\n",
__func__, data, len, err);
return err;
}
static int fastrpc_session_alloc(struct fastrpc_channel_ctx *chan, int secure,
struct fastrpc_session_ctx **session)
{
int err = 0;
mutex_lock(&chan->smd_mutex);
if (!*session)
err = fastrpc_session_alloc_locked(chan, secure, session);
mutex_unlock(&chan->smd_mutex);
return err;
}
static void fastrpc_session_free(struct fastrpc_channel_ctx *chan,
struct fastrpc_session_ctx *session)
{
mutex_lock(&chan->smd_mutex);
session->used = 0;
mutex_unlock(&chan->smd_mutex);
}
static int fastrpc_file_free(struct fastrpc_file *fl)
{
struct hlist_node *n = NULL;
struct fastrpc_mmap *map = NULL, *lmap = NULL;
struct fastrpc_perf *perf = NULL, *fperf = NULL;
int cid;
if (!fl)
return 0;
cid = fl->cid;
(void)fastrpc_release_current_dsp_process(fl);
spin_lock(&fl->apps->hlock);
hlist_del_init(&fl->hn);
spin_unlock(&fl->apps->hlock);
kfree(fl->debug_buf);
fl->debug_buf_alloced_attempted = 0;
if (!fl->sctx) {
kfree(fl);
return 0;
}
spin_lock(&fl->hlock);
fl->file_close = 1;
fl->in_process_create = false;
spin_unlock(&fl->hlock);
if (!IS_ERR_OR_NULL(fl->init_mem))
fastrpc_buf_free(fl->init_mem, 0);
fastrpc_context_list_dtor(fl);
fastrpc_cached_buf_list_free(fl);
mutex_lock(&fl->map_mutex);
do {
lmap = NULL;
hlist_for_each_entry_safe(map, n, &fl->maps, hn) {
hlist_del_init(&map->hn);
lmap = map;
break;
}
fastrpc_mmap_free(lmap, 1);
} while (lmap);
mutex_unlock(&fl->map_mutex);
if (fl->sctx)
fastrpc_session_free(&fl->apps->channel[cid], fl->sctx);
if (fl->secsctx)
fastrpc_session_free(&fl->apps->channel[cid], fl->secsctx);
mutex_lock(&fl->perf_mutex);
do {
struct hlist_node *pn = NULL;
fperf = NULL;
hlist_for_each_entry_safe(perf, pn, &fl->perf, hn) {
hlist_del_init(&perf->hn);
fperf = perf;
break;
}
kfree(fperf);
} while (fperf);
fastrpc_remote_buf_list_free(fl);
mutex_unlock(&fl->perf_mutex);
mutex_destroy(&fl->perf_mutex);
mutex_destroy(&fl->map_mutex);
mutex_destroy(&fl->internal_map_mutex);
kfree(fl);
return 0;
}
static int fastrpc_device_release(struct inode *inode, struct file *file)
{
struct fastrpc_file *fl = (struct fastrpc_file *)file->private_data;
if (fl) {
if (fl->qos_request && pm_qos_request_active(&fl->pm_qos_req))
pm_qos_remove_request(&fl->pm_qos_req);
if (fl->debugfs_file != NULL)
debugfs_remove(fl->debugfs_file);
fastrpc_file_free(fl);
file->private_data = NULL;
}
return 0;
}
static int fastrpc_debugfs_open(struct inode *inode, struct file *filp)
{
filp->private_data = inode->i_private;
return 0;
}
static ssize_t fastrpc_debugfs_read(struct file *filp, char __user *buffer,
size_t count, loff_t *position) {
struct fastrpc_apps *me = &gfa;
struct fastrpc_file *fl = filp->private_data;
struct hlist_node *n;
struct fastrpc_buf *buf = NULL;
struct fastrpc_mmap *map = NULL;
struct fastrpc_mmap *gmaps = NULL;
struct smq_invoke_ctx *ictx = NULL;
struct fastrpc_channel_ctx *chan = NULL;
unsigned int len = 0;
int i, j, sess_used = 0, ret = 0;
char *fileinfo = NULL;
char single_line[UL_SIZE] = "----------------";
char title[UL_SIZE] = "=========================";
fileinfo = kzalloc(DEBUGFS_SIZE, GFP_KERNEL);
if (!fileinfo)
goto bail;
if (fl == NULL) {
len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len,
"\n%s %s %s\n", title, " CHANNEL INFO ", title);
len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len,
"%-7s|%-10s|%-14s|%-9s|%-13s\n",
"subsys", "sesscount", "issubsystemup",
"ssrcount", "session_used");
len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len,
"-%s%s%s%s-\n", single_line, single_line,
single_line, single_line);
for (i = 0; i < NUM_CHANNELS; i++) {
sess_used = 0;
chan = &gcinfo[i];
len += scnprintf(fileinfo + len,
DEBUGFS_SIZE - len, "%-7s", chan->subsys);
len += scnprintf(fileinfo + len,
DEBUGFS_SIZE - len, "|%-10u",
chan->sesscount);
len += scnprintf(fileinfo + len,
DEBUGFS_SIZE - len, "|%-14d",
chan->issubsystemup);
len += scnprintf(fileinfo + len,
DEBUGFS_SIZE - len, "|%-9u",
chan->ssrcount);
for (j = 0; j < chan->sesscount; j++) {
sess_used += chan->session[j].used;
}
len += scnprintf(fileinfo + len,
DEBUGFS_SIZE - len, "|%-13d\n", sess_used);
}
len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len,
"\n%s%s%s\n", "=============",
" CMA HEAP ", "==============");
len += scnprintf(fileinfo + len,
DEBUGFS_SIZE - len, "%-20s|%-20s\n", "addr", "size");
len += scnprintf(fileinfo + len,
DEBUGFS_SIZE - len, "--%s%s---\n",
single_line, single_line);
len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len,
"0x%-18llX", me->range.addr);
len += scnprintf(fileinfo + len,
DEBUGFS_SIZE - len, "|0x%-18llX\n", me->range.size);
len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len,
"\n==========%s %s %s===========\n",
title, " GMAPS ", title);
len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len,
"%-20s|%-20s|%-20s|%-20s\n",
"fd", "phys", "size", "va");
len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len,
"%s%s%s%s%s\n", single_line, single_line,
single_line, single_line, single_line);
spin_lock(&me->hlock);
hlist_for_each_entry_safe(gmaps, n, &me->maps, hn) {
len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len,
"%-20d|0x%-18llX|0x%-18X|0x%-20lX\n\n",
gmaps->fd, gmaps->phys,
(uint32_t)gmaps->size,
gmaps->va);
}
spin_unlock(&me->hlock);
len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len,
"%-20s|%-20s|%-20s|%-20s\n",
"len", "refs", "raddr", "flags");
len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len,
"%s%s%s%s%s\n", single_line, single_line,
single_line, single_line, single_line);
spin_lock(&me->hlock);
hlist_for_each_entry_safe(gmaps, n, &me->maps, hn) {
len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len,
"0x%-18X|%-20d|%-20lu|%-20u\n",
(uint32_t)gmaps->len, gmaps->refs,
gmaps->raddr, gmaps->flags);
}
spin_unlock(&me->hlock);
} else {
len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len,
"\n%s %13s %d\n", "cid", ":", fl->cid);
len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len,
"%s %12s %d\n", "tgid", ":", fl->tgid);
len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len,
"%s %7s %d\n", "sessionid", ":", fl->sessionid);
len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len,
"%s %8s %u\n", "ssrcount", ":", fl->ssrcount);
len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len,
"%s %14s %d\n", "pd", ":", fl->pd);
len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len,
"%s %9s %s\n", "servloc_name", ":", fl->servloc_name);
len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len,
"%s %6s %d\n", "file_close", ":", fl->file_close);
len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len,
"%s %9s %d\n", "profile", ":", fl->profile);
len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len,
"%s %3s %d\n", "smmu.coherent", ":",
fl->sctx->smmu.coherent);
len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len,
"%s %4s %d\n", "smmu.enabled", ":",
fl->sctx->smmu.enabled);
len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len,
"%s %9s %d\n", "smmu.cb", ":", fl->sctx->smmu.cb);
len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len,
"%s %5s %d\n", "smmu.secure", ":",
fl->sctx->smmu.secure);
len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len,
"%s %5s %d\n", "smmu.faults", ":",
fl->sctx->smmu.faults);
len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len,
"\n=======%s %s %s======\n", title,
" LIST OF MAPS ", title);
len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len,
"%-20s|%-20s|%-20s\n", "va", "phys", "size");
len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len,
"%s%s%s%s%s\n",
single_line, single_line, single_line,
single_line, single_line);
mutex_lock(&fl->map_mutex);
hlist_for_each_entry_safe(map, n, &fl->maps, hn) {
len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len,
"0x%-20lX|0x%-20llX|0x%-20zu\n\n",
map->va, map->phys,
map->size);
}
mutex_unlock(&fl->map_mutex);
len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len,
"%-20s|%-20s|%-20s|%-20s\n",
"len", "refs",
"raddr", "uncached");
len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len,
"%s%s%s%s%s\n",
single_line, single_line, single_line,
single_line, single_line);
mutex_lock(&fl->map_mutex);
hlist_for_each_entry_safe(map, n, &fl->maps, hn) {
len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len,
"%-20zu|%-20d|0x%-20lX|%-20d\n\n",
map->len, map->refs, map->raddr,
map->uncached);
}
mutex_unlock(&fl->map_mutex);
len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len,
"%-20s|%-20s\n", "secure", "attr");
len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len,
"%s%s%s%s%s\n",
single_line, single_line, single_line,
single_line, single_line);
mutex_lock(&fl->map_mutex);
hlist_for_each_entry_safe(map, n, &fl->maps, hn) {
len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len,
"%-20d|0x%-20lX\n\n",
map->secure, map->attr);
}
mutex_unlock(&fl->map_mutex);
len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len,
"\n======%s %s %s======\n", title,
" LIST OF BUFS ", title);
spin_lock(&fl->hlock);
len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len,
"%-19s|%-19s|%-19s\n",
"virt", "phys", "size");
len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len,
"%s%s%s%s%s\n", single_line, single_line,
single_line, single_line, single_line);
hlist_for_each_entry_safe(buf, n, &fl->cached_bufs, hn) {
len += scnprintf(fileinfo + len,
DEBUGFS_SIZE - len,
"0x%-17p|0x%-17llX|%-19zu\n",
buf->virt, (uint64_t)buf->phys, buf->size);
}
len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len,
"\n%s %s %s\n", title,
" LIST OF PENDING SMQCONTEXTS ", title);
len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len,
"%-20s|%-10s|%-10s|%-10s|%-20s\n",
"sc", "pid", "tgid", "used", "ctxid");
len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len,
"%s%s%s%s%s\n", single_line, single_line,
single_line, single_line, single_line);
hlist_for_each_entry_safe(ictx, n, &fl->clst.pending, hn) {
len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len,
"0x%-18X|%-10d|%-10d|%-10zu|0x%-20llX\n\n",
ictx->sc, ictx->pid, ictx->tgid,
ictx->used, ictx->ctxid);
}
len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len,
"\n%s %s %s\n", title,
" LIST OF INTERRUPTED SMQCONTEXTS ", title);
len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len,
"%-20s|%-10s|%-10s|%-10s|%-20s\n",
"sc", "pid", "tgid", "used", "ctxid");
len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len,
"%s%s%s%s%s\n", single_line, single_line,
single_line, single_line, single_line);
hlist_for_each_entry_safe(ictx, n, &fl->clst.interrupted, hn) {
len += scnprintf(fileinfo + len, DEBUGFS_SIZE - len,
"%-20u|%-20d|%-20d|%-20zu|0x%-20llX\n\n",
ictx->sc, ictx->pid, ictx->tgid,
ictx->used, ictx->ctxid);
}
spin_unlock(&fl->hlock);
}
if (len > DEBUGFS_SIZE)
len = DEBUGFS_SIZE;
ret = simple_read_from_buffer(buffer, count, position, fileinfo, len);
kfree(fileinfo);
bail:
return ret;
}
static const struct file_operations debugfs_fops = {
.open = fastrpc_debugfs_open,
.read = fastrpc_debugfs_read,
};
static int fastrpc_channel_open(struct fastrpc_file *fl)
{
struct fastrpc_apps *me = &gfa;
int cid = -1, err = 0;
VERIFY(err, fl && fl->sctx && fl->cid >= 0 && fl->cid < NUM_CHANNELS);
if (err) {
pr_err("adsprpc: ERROR: %s: kernel session not initialized yet for %s\n",
__func__, current->comm);
err = EBADR;
return err;
}
cid = fl->cid;
mutex_lock(&me->channel[cid].rpmsg_mutex);
VERIFY(err, NULL != me->channel[cid].rpdev);
if (err) {
err = -ENOTCONN;
mutex_unlock(&me->channel[cid].rpmsg_mutex);
goto bail;
}
mutex_unlock(&me->channel[cid].rpmsg_mutex);
mutex_lock(&me->channel[cid].smd_mutex);
if (me->channel[cid].ssrcount !=
me->channel[cid].prevssrcount) {
if (!me->channel[cid].issubsystemup) {
err = -ENOTCONN;
mutex_unlock(&me->channel[cid].smd_mutex);
goto bail;
}
}
fl->ssrcount = me->channel[cid].ssrcount;
if (cid == ADSP_DOMAIN_ID && me->channel[cid].ssrcount !=
me->channel[cid].prevssrcount) {
mutex_lock(&fl->map_mutex);
err = fastrpc_mmap_remove_ssr(fl, 1);
mutex_unlock(&fl->map_mutex);
if (err)
pr_warn("adsprpc: %s: %s: failed to unmap remote heap for %s (err %d)\n",
__func__, current->comm,
me->channel[cid].subsys, err);
me->channel[cid].prevssrcount =
me->channel[cid].ssrcount;
}
mutex_unlock(&me->channel[cid].smd_mutex);
bail:
return err;
}
static inline void fastrpc_register_wakeup_source(struct device *dev,
const char *client_name, struct wakeup_source **device_wake_source)
{
struct wakeup_source *wake_source = NULL;
wake_source = wakeup_source_register(dev, client_name);
if (IS_ERR_OR_NULL(wake_source)) {
pr_err("adsprpc: Error: %s: %s: wakeup_source_register failed for dev %s, client %s with err %ld\n",
__func__, current->comm, dev_name(dev),
client_name, PTR_ERR(wake_source));
return;
}
*device_wake_source = wake_source;
}
static int fastrpc_device_open(struct inode *inode, struct file *filp)
{
int err = 0;
struct fastrpc_file *fl = NULL;
struct fastrpc_apps *me = &gfa;
/*
* Indicates the device node opened
* MINOR_NUM_DEV or MINOR_NUM_SECURE_DEV
*/
int dev_minor = MINOR(inode->i_rdev);
VERIFY(err, ((dev_minor == MINOR_NUM_DEV) ||
(dev_minor == MINOR_NUM_SECURE_DEV)));
if (err) {
pr_err("adsprpc: Invalid dev minor num %d\n", dev_minor);
return err;
}
VERIFY(err, NULL != (fl = kzalloc(sizeof(*fl), GFP_KERNEL)));
if (err)
return err;
context_list_ctor(&fl->clst);
spin_lock_init(&fl->hlock);
INIT_HLIST_HEAD(&fl->maps);
INIT_HLIST_HEAD(&fl->perf);
INIT_HLIST_HEAD(&fl->cached_bufs);
INIT_HLIST_HEAD(&fl->remote_bufs);
INIT_HLIST_NODE(&fl->hn);
fl->sessionid = 0;
fl->apps = me;
fl->mode = FASTRPC_MODE_SERIAL;
fl->cid = -1;
fl->dev_minor = dev_minor;
fl->init_mem = NULL;
fl->in_process_create = false;
memset(&fl->perf, 0, sizeof(fl->perf));
fl->qos_request = 0;
fl->dsp_proc_init = 0;
filp->private_data = fl;
mutex_init(&fl->internal_map_mutex);
mutex_init(&fl->map_mutex);
spin_lock(&me->hlock);
hlist_add_head(&fl->hn, &me->drivers);
spin_unlock(&me->hlock);
mutex_init(&fl->perf_mutex);
init_completion(&fl->shutdown);
return 0;
}
static int fastrpc_set_process_info(struct fastrpc_file *fl)
{
int err = 0, buf_size = 0;
char strpid[PID_SIZE];
char cur_comm[TASK_COMM_LEN];
memcpy(cur_comm, current->comm, TASK_COMM_LEN);
cur_comm[TASK_COMM_LEN-1] = '\0';
fl->tgid = current->tgid;
snprintf(strpid, PID_SIZE, "%d", current->pid);
if (debugfs_root) {
buf_size = strlen(cur_comm) + strlen("_")
+ strlen(strpid) + 1;
spin_lock(&fl->hlock);
if (fl->debug_buf_alloced_attempted) {
spin_unlock(&fl->hlock);
return err;
}
fl->debug_buf_alloced_attempted = 1;
spin_unlock(&fl->hlock);
fl->debug_buf = kzalloc(buf_size, GFP_KERNEL);
if (!fl->debug_buf) {
err = -ENOMEM;
return err;
}
snprintf(fl->debug_buf, buf_size, "%.10s%s%d",
cur_comm, "_", current->pid);
fl->debugfs_file = debugfs_create_file(fl->debug_buf, 0644,
debugfs_root, fl, &debugfs_fops);
if (IS_ERR_OR_NULL(fl->debugfs_file)) {
pr_warn("Error: %s: %s: failed to create debugfs file %s\n",
cur_comm, __func__, fl->debug_buf);
fl->debugfs_file = NULL;
kfree(fl->debug_buf);
fl->debug_buf_alloced_attempted = 0;
fl->debug_buf = NULL;
}
}
return err;
}
static int fastrpc_get_info(struct fastrpc_file *fl, uint32_t *info)
{
int err = 0;
uint32_t cid;
struct fastrpc_apps *me = &gfa;
VERIFY(err, fl != NULL);
if (err)
goto bail;
err = fastrpc_set_process_info(fl);
if (err)
goto bail;
cid = *info;
if (fl->cid == -1) {
struct fastrpc_channel_ctx *chan = &me->channel[cid];
VERIFY(err, cid < NUM_CHANNELS);
if (err)
goto bail;
/* Check to see if the device node is non-secure */
if (fl->dev_minor == MINOR_NUM_DEV) {
/*
* If an app is trying to offload to a secure remote
* channel by opening the non-secure device node, allow
* the access if the subsystem supports unsigned
* offload. Untrusted apps will be restricted.
*/
if (chan->secure == SECURE_CHANNEL &&
!chan->unsigned_support) {
err = -EACCES;
goto bail;
}
}
fl->cid = cid;
fl->ssrcount = fl->apps->channel[cid].ssrcount;
mutex_lock(&fl->apps->channel[cid].smd_mutex);
err = fastrpc_session_alloc_locked(&fl->apps->channel[cid],
0, &fl->sctx);
mutex_unlock(&fl->apps->channel[cid].smd_mutex);
if (err)
goto bail;
}
VERIFY(err, fl->sctx != NULL);
if (err) {
err = -EBADR;
goto bail;
}
*info = (fl->sctx->smmu.enabled ? 1 : 0);
bail:
return err;
}
static int fastrpc_internal_control(struct fastrpc_file *fl,
struct fastrpc_ioctl_control *cp)
{
int err = 0;
unsigned int latency;
cpumask_t mask;
struct fastrpc_apps *me = &gfa;
u32 len = me->silvercores.corecount, i = 0;
VERIFY(err, !IS_ERR_OR_NULL(fl) && !IS_ERR_OR_NULL(fl->apps));
if (err)
goto bail;
VERIFY(err, !IS_ERR_OR_NULL(cp));
if (err)
goto bail;
switch (cp->req) {
case FASTRPC_CONTROL_LATENCY:
latency = cp->lp.enable == FASTRPC_LATENCY_CTRL_ENB ?
fl->apps->latency : PM_QOS_DEFAULT_VALUE;
VERIFY(err, latency != 0);
if (err)
goto bail;
cpumask_clear(&mask);
for (i = 0; i < len; i++)
cpumask_set_cpu(me->silvercores.coreno[i], &mask);
fl->pm_qos_req.type = PM_QOS_REQ_AFFINE_CORES;
cpumask_copy(&fl->pm_qos_req.cpus_affine, &mask);
if (!fl->qos_request) {
pm_qos_add_request(&fl->pm_qos_req,
PM_QOS_CPU_DMA_LATENCY, latency);
fl->qos_request = 1;
} else
pm_qos_update_request(&fl->pm_qos_req, latency);
/* Ensure CPU feature map updated to DSP for early WakeUp */
fastrpc_send_cpuinfo_to_dsp(fl);
break;
case FASTRPC_CONTROL_KALLOC:
cp->kalloc.kalloc_support = 1;
break;
case FASTRPC_CONTROL_WAKELOCK:
if (fl->dev_minor != MINOR_NUM_SECURE_DEV) {
pr_err("adsprpc: %s: %s: PM voting not allowed for non-secure device node %d\n",
current->comm, __func__, fl->dev_minor);
err = -EPERM;
goto bail;
}
fl->wake_enable = cp->wp.enable;
break;
case FASTRPC_CONTROL_PM:
if (!fl->wake_enable) {
/* Kernel PM voting not requested by this application */
err = -EACCES;
goto bail;
}
if (cp->pm.timeout > MAX_PM_TIMEOUT_MS)
fl->ws_timeout = MAX_PM_TIMEOUT_MS;
else
fl->ws_timeout = cp->pm.timeout;
VERIFY(err, fl->cid >= 0 && fl->cid < NUM_CHANNELS);
if (err)
goto bail;
fastrpc_pm_awake(fl, gcinfo[fl->cid].secure);
break;
case FASTRPC_CONTROL_DSPPROCESS_CLEAN:
(void)fastrpc_release_current_dsp_process(fl);
break;
default:
err = -EBADRQC;
break;
}
bail:
return err;
}
static int fastrpc_check_pd_status(struct fastrpc_file *fl, char *sloc_name)
{
int err = 0, session = -1, cid = -1;
struct fastrpc_apps *me = &gfa;
if (fl->servloc_name && sloc_name
&& !strcmp(fl->servloc_name, sloc_name)) {
err = fastrpc_get_spd_session(sloc_name, &session, &cid);
if (err || cid != fl->cid)
goto bail;
if (!me->channel[cid].spd[session].ispdup) {
err = -ENOTCONN;
goto bail;
}
}
bail:
return err;
}
static int fastrpc_setmode(unsigned long ioctl_param,
struct fastrpc_file *fl)
{
int err = 0;
switch ((uint32_t)ioctl_param) {
case FASTRPC_MODE_PARALLEL:
case FASTRPC_MODE_SERIAL:
fl->mode = (uint32_t)ioctl_param;
break;
case FASTRPC_MODE_PROFILE:
fl->profile = (uint32_t)ioctl_param;
break;
case FASTRPC_MODE_SESSION:
fl->sessionid = 1;
fl->tgid |= (1 << SESSION_ID_INDEX);
break;
default:
err = -ENOTTY;
break;
}
return err;
}
static int fastrpc_getperf(struct fastrpc_ioctl_perf *ioctl_perf,
void *param, struct fastrpc_file *fl)
{
int err = 0;
K_COPY_FROM_USER(err, 0, ioctl_perf,
param, sizeof(*ioctl_perf));
if (err)
goto bail;
ioctl_perf->numkeys = PERF_KEY_MAX;
if (ioctl_perf->keys) {
char *keys = PERF_KEYS;
K_COPY_TO_USER(err, 0, (void *)ioctl_perf->keys,
keys, strlen(keys)+1);
if (err)
goto bail;
}
if (ioctl_perf->data) {
struct fastrpc_perf *perf = NULL, *fperf = NULL;
struct hlist_node *n = NULL;
mutex_lock(&fl->perf_mutex);
hlist_for_each_entry_safe(perf, n, &fl->perf, hn) {
if (perf->tid == current->pid) {
fperf = perf;
break;
}
}
mutex_unlock(&fl->perf_mutex);
if (fperf) {
K_COPY_TO_USER(err, 0,
(void *)ioctl_perf->data, fperf,
sizeof(*fperf) - sizeof(struct hlist_node));
}
}
K_COPY_TO_USER(err, 0, param, ioctl_perf, sizeof(*ioctl_perf));
if (err)
goto bail;
bail:
return err;
}
static int fastrpc_control(struct fastrpc_ioctl_control *cp,
void *param, struct fastrpc_file *fl)
{
int err = 0;
K_COPY_FROM_USER(err, 0, cp, param,
sizeof(*cp));
if (err)
goto bail;
VERIFY(err, 0 == (err = fastrpc_internal_control(fl, cp)));
if (err)
goto bail;
if (cp->req == FASTRPC_CONTROL_KALLOC) {
K_COPY_TO_USER(err, 0, param, cp, sizeof(*cp));
if (err)
goto bail;
}
bail:
return err;
}
static int fastrpc_get_dsp_info(struct fastrpc_ioctl_dsp_capabilities *dsp_cap,
void *param, struct fastrpc_file *fl)
{
int err = 0;
K_COPY_FROM_USER(err, 0, dsp_cap, param,
sizeof(struct fastrpc_ioctl_dsp_capabilities));
VERIFY(err, dsp_cap->domain < NUM_CHANNELS);
if (err)
goto bail;
err = fastrpc_get_info_from_kernel(dsp_cap, fl);
if (err)
goto bail;
K_COPY_TO_USER(err, 0, param, dsp_cap,
sizeof(struct fastrpc_ioctl_dsp_capabilities));
bail:
return err;
}
static int fastrpc_update_cdsp_support(struct fastrpc_file *fl)
{
struct fastrpc_ioctl_dsp_capabilities *dsp_query;
struct fastrpc_apps *me = &gfa;
int err = 0;
VERIFY(err, NULL != (dsp_query = kzalloc(sizeof(*dsp_query),
GFP_KERNEL)));
if (err)
goto bail;
dsp_query->domain = CDSP_DOMAIN_ID;
err = fastrpc_get_info_from_kernel(dsp_query, fl);
if (err)
goto bail;
if (!(dsp_query->dsp_attributes[1]))
me->channel[CDSP_DOMAIN_ID].unsigned_support = false;
bail:
kfree(dsp_query);
return err;
}
static long fastrpc_device_ioctl(struct file *file, unsigned int ioctl_num,
unsigned long ioctl_param)
{
union {
struct fastrpc_ioctl_invoke_crc inv;
struct fastrpc_ioctl_mmap mmap;
struct fastrpc_ioctl_mmap_64 mmap64;
struct fastrpc_ioctl_munmap munmap;
struct fastrpc_ioctl_munmap_64 munmap64;
struct fastrpc_ioctl_munmap_fd munmap_fd;
struct fastrpc_ioctl_init_attrs init;
struct fastrpc_ioctl_perf perf;
struct fastrpc_ioctl_control cp;
struct fastrpc_ioctl_dsp_capabilities dsp_cap;
} p;
union {
struct fastrpc_ioctl_mmap mmap;
struct fastrpc_ioctl_munmap munmap;
} i;
void *param = (char *)ioctl_param;
struct fastrpc_file *fl = (struct fastrpc_file *)file->private_data;
int size = 0, err = 0;
uint32_t info;
static bool isquerydone;
p.inv.fds = NULL;
p.inv.attrs = NULL;
p.inv.crc = NULL;
err = fastrpc_check_pd_status(fl,
AUDIO_PDR_SERVICE_LOCATION_CLIENT_NAME);
if (err)
goto bail;
spin_lock(&fl->hlock);
if (fl->file_close == 1) {
err = EBADF;
pr_warn("adsprpc: fastrpc_device_release is happening, So not sending any new requests to DSP\n");
spin_unlock(&fl->hlock);
goto bail;
}
spin_unlock(&fl->hlock);
switch (ioctl_num) {
case FASTRPC_IOCTL_INVOKE:
size = sizeof(struct fastrpc_ioctl_invoke);
/* fall through */
case FASTRPC_IOCTL_INVOKE_FD:
if (!size)
size = sizeof(struct fastrpc_ioctl_invoke_fd);
/* fall through */
case FASTRPC_IOCTL_INVOKE_ATTRS:
if (!size)
size = sizeof(struct fastrpc_ioctl_invoke_attrs);
/* fall through */
case FASTRPC_IOCTL_INVOKE_CRC:
if (!size)
size = sizeof(struct fastrpc_ioctl_invoke_crc);
K_COPY_FROM_USER(err, 0, &p.inv, param, size);
if (err)
goto bail;
VERIFY(err, 0 == (err = fastrpc_internal_invoke(fl, fl->mode,
0, &p.inv)));
if (err)
goto bail;
break;
case FASTRPC_IOCTL_MMAP:
K_COPY_FROM_USER(err, 0, &p.mmap, param,
sizeof(p.mmap));
if (err)
goto bail;
VERIFY(err, 0 == (err = fastrpc_internal_mmap(fl, &p.mmap)));
if (err)
goto bail;
K_COPY_TO_USER(err, 0, param, &p.mmap, sizeof(p.mmap));
if (err)
goto bail;
break;
case FASTRPC_IOCTL_MUNMAP:
K_COPY_FROM_USER(err, 0, &p.munmap, param,
sizeof(p.munmap));
if (err)
goto bail;
VERIFY(err, 0 == (err = fastrpc_internal_munmap(fl,
&p.munmap)));
if (err)
goto bail;
break;
case FASTRPC_IOCTL_MMAP_64:
K_COPY_FROM_USER(err, 0, &p.mmap64, param,
sizeof(p.mmap64));
if (err)
goto bail;
get_fastrpc_ioctl_mmap_64(&p.mmap64, &i.mmap);
VERIFY(err, 0 == (err = fastrpc_internal_mmap(fl, &i.mmap)));
if (err)
goto bail;
put_fastrpc_ioctl_mmap_64(&p.mmap64, &i.mmap);
K_COPY_TO_USER(err, 0, param, &p.mmap64, sizeof(p.mmap64));
if (err)
goto bail;
break;
case FASTRPC_IOCTL_MUNMAP_64:
K_COPY_FROM_USER(err, 0, &p.munmap64, param,
sizeof(p.munmap64));
if (err)
goto bail;
get_fastrpc_ioctl_munmap_64(&p.munmap64, &i.munmap);
VERIFY(err, 0 == (err = fastrpc_internal_munmap(fl,
&i.munmap)));
if (err)
goto bail;
break;
case FASTRPC_IOCTL_MUNMAP_FD:
K_COPY_FROM_USER(err, 0, &p.munmap_fd, param,
sizeof(p.munmap_fd));
if (err)
goto bail;
VERIFY(err, 0 == (err = fastrpc_internal_munmap_fd(fl,
&p.munmap_fd)));
if (err)
goto bail;
break;
case FASTRPC_IOCTL_SETMODE:
err = fastrpc_setmode(ioctl_param, fl);
break;
case FASTRPC_IOCTL_GETPERF:
err = fastrpc_getperf(&p.perf, param, fl);
break;
case FASTRPC_IOCTL_CONTROL:
err = fastrpc_control(&p.cp, param, fl);
break;
case FASTRPC_IOCTL_GETINFO:
K_COPY_FROM_USER(err, 0, &info, param, sizeof(info));
if (err)
goto bail;
VERIFY(err, 0 == (err = fastrpc_get_info(fl, &info)));
if (err)
goto bail;
K_COPY_TO_USER(err, 0, param, &info, sizeof(info));
if (err)
goto bail;
break;
case FASTRPC_IOCTL_INIT:
p.init.attrs = 0;
p.init.siglen = 0;
size = sizeof(struct fastrpc_ioctl_init);
/* fall through */
case FASTRPC_IOCTL_INIT_ATTRS:
if (!size)
size = sizeof(struct fastrpc_ioctl_init_attrs);
K_COPY_FROM_USER(err, 0, &p.init, param, size);
if (err)
goto bail;
VERIFY(err, p.init.init.filelen >= 0 &&
p.init.init.filelen < INIT_FILELEN_MAX);
if (err)
goto bail;
VERIFY(err, p.init.init.memlen >= 0 &&
p.init.init.memlen < INIT_MEMLEN_MAX);
if (err)
goto bail;
VERIFY(err, 0 == (err = fastrpc_init_process(fl, &p.init)));
if (err)
goto bail;
if ((fl->cid == CDSP_DOMAIN_ID) && !isquerydone) {
if (!fastrpc_update_cdsp_support(fl))
isquerydone = true;
}
break;
case FASTRPC_IOCTL_GET_DSP_INFO:
err = fastrpc_get_dsp_info(&p.dsp_cap, param, fl);
break;
default:
err = -ENOTTY;
break;
}
bail:
return err;
}
static int fastrpc_restart_notifier_cb(struct notifier_block *nb,
unsigned long code,
void *data)
{
struct fastrpc_apps *me = &gfa;
struct fastrpc_channel_ctx *ctx;
struct fastrpc_file *fl;
struct hlist_node *n;
struct notif_data *notifdata = (struct notif_data *)data;
int cid = -1;
ctx = container_of(nb, struct fastrpc_channel_ctx, nb);
cid = ctx - &me->channel[0];
if (code == SUBSYS_BEFORE_SHUTDOWN) {
pr_info("adsprpc: %s: %s subsystem is restarting\n",
__func__, gcinfo[cid].subsys);
mutex_lock(&me->channel[cid].smd_mutex);
ctx->ssrcount++;
ctx->issubsystemup = 0;
mutex_unlock(&me->channel[cid].smd_mutex);
} else if (code == SUBSYS_AFTER_SHUTDOWN) {
pr_info("adsprpc: %s: %s subsystem is down\n",
__func__, gcinfo[cid].subsys);
spin_lock(&me->hlock);
hlist_for_each_entry_safe(fl, n, &me->drivers, hn) {
if (fl->cid != cid)
continue;
complete(&fl->shutdown);
}
spin_unlock(&me->hlock);
} else if (code == SUBSYS_RAMDUMP_NOTIFICATION) {
if (cid == RH_CID) {
if (me->ramdump_handle)
me->channel[RH_CID].ramdumpenabled = 1;
}
pr_info("adsprpc: %s: received RAMDUMP notification for %s\n",
__func__, gcinfo[cid].subsys);
} else if (code == SUBSYS_BEFORE_POWERUP) {
if (cid == RH_CID && notifdata->enable_ramdump) {
if (me->ramdump_handle && me->channel[RH_CID]
.ramdumpenabled) {
me->enable_ramdump = true;
me->channel[RH_CID].ramdumpenabled = 0;
}
}
} else if (code == SUBSYS_AFTER_POWERUP) {
pr_info("adsprpc: %s: %s subsystem is up\n",
__func__, gcinfo[cid].subsys);
ctx->issubsystemup = 1;
}
return NOTIFY_DONE;
}
static int fastrpc_pdr_notifier_cb(struct notifier_block *pdrnb,
unsigned long code,
void *data)
{
struct fastrpc_apps *me = &gfa;
struct fastrpc_static_pd *spd;
struct notif_data *notifdata = (struct notif_data *)data;
spd = container_of(pdrnb, struct fastrpc_static_pd, pdrnb);
if (code == SERVREG_NOTIF_SERVICE_STATE_DOWN_V01) {
pr_info("adsprpc: %s: %s (%s) is down for PDR on %s\n",
__func__, spd->spdname, spd->servloc_name,
gcinfo[spd->cid].subsys);
mutex_lock(&me->channel[spd->cid].smd_mutex);
spd->pdrcount++;
spd->ispdup = 0;
mutex_unlock(&me->channel[spd->cid].smd_mutex);
if (!strcmp(spd->servloc_name,
AUDIO_PDR_SERVICE_LOCATION_CLIENT_NAME))
me->staticpd_flags = 0;
fastrpc_notify_pdr_drivers(me, spd->servloc_name);
} else if (code == SUBSYS_RAMDUMP_NOTIFICATION) {
if (spd->cid == RH_CID) {
if (spd->cid == RH_CID && me->ramdump_handle)
me->channel[RH_CID].ramdumpenabled = 1;
}
pr_info("adsprpc: %s: received %s RAMDUMP notification for %s (%s)\n",
__func__, gcinfo[spd->cid].subsys,
spd->spdname, spd->servloc_name);
} else if (code == SUBSYS_BEFORE_POWERUP) {
if (spd->cid == RH_CID && notifdata->enable_ramdump) {
if (me->ramdump_handle && me->channel[RH_CID]
.ramdumpenabled)
me->enable_ramdump = true;
me->channel[RH_CID].ramdumpenabled = 0;
}
} else if (code == SERVREG_NOTIF_SERVICE_STATE_UP_V01) {
pr_info("adsprpc: %s: %s (%s) is up on %s\n",
__func__, spd->spdname, spd->servloc_name,
gcinfo[spd->cid].subsys);
spd->ispdup = 1;
}
return NOTIFY_DONE;
}
static int fastrpc_get_service_location_notify(struct notifier_block *nb,
unsigned long opcode, void *data)
{
struct fastrpc_static_pd *spd;
struct pd_qmi_client_data *pdr = data;
int curr_state = 0, i = 0;
spd = container_of(nb, struct fastrpc_static_pd, get_service_nb);
if (opcode == LOCATOR_DOWN) {
pr_warn("adsprpc: %s: PDR notifier locator for %s is down for %s\n",
__func__, gcinfo[spd->cid].subsys,
spd->servloc_name);
return NOTIFY_DONE;
}
for (i = 0; i < pdr->total_domains; i++) {
if ((!strcmp(spd->servloc_name,
AUDIO_PDR_SERVICE_LOCATION_CLIENT_NAME))
&& (!strcmp(pdr->domain_list[i].name,
ADSP_AUDIOPD_NAME))) {
goto pdr_register;
} else if ((!strcmp(spd->servloc_name,
SENSORS_PDR_ADSP_SERVICE_LOCATION_CLIENT_NAME))
&& (!strcmp(pdr->domain_list[i].name,
ADSP_SENSORPD_NAME))) {
goto pdr_register;
} else if ((!strcmp(spd->servloc_name,
SENSORS_PDR_SLPI_SERVICE_LOCATION_CLIENT_NAME))
&& (!strcmp(pdr->domain_list[i].name,
SLPI_SENSORPD_NAME))) {
goto pdr_register;
}
}
return NOTIFY_DONE;
pdr_register:
if (!spd->pdrhandle) {
spd->pdrhandle =
service_notif_register_notifier(
pdr->domain_list[i].name,
pdr->domain_list[i].instance_id,
&spd->pdrnb, &curr_state);
if (IS_ERR_OR_NULL(spd->pdrhandle))
pr_warn("adsprpc: %s: PDR notifier for %s register failed for %s (%s) with err %ld\n",
__func__, gcinfo[spd->cid].subsys,
pdr->domain_list[i].name, spd->servloc_name,
PTR_ERR(spd->pdrhandle));
else
pr_info("adsprpc: %s: PDR notifier for %s registered for %s (%s)\n",
__func__, gcinfo[spd->cid].subsys,
pdr->domain_list[i].name, spd->servloc_name);
} else {
pr_warn("adsprpc: %s: %s (%s) notifier is already registered for %s\n",
__func__, pdr->domain_list[i].name,
spd->servloc_name, gcinfo[spd->cid].subsys);
}
if (curr_state == SERVREG_NOTIF_SERVICE_STATE_UP_V01) {
pr_info("adsprpc: %s: %s (%s) PDR service for %s is up\n",
__func__, spd->servloc_name, pdr->domain_list[i].name,
gcinfo[spd->cid].subsys);
spd->ispdup = 1;
} else if (curr_state == SERVREG_NOTIF_SERVICE_STATE_UNINIT_V01) {
pr_info("adsprpc: %s: %s (%s) PDR service for %s is uninitialized\n",
__func__, spd->servloc_name, pdr->domain_list[i].name,
gcinfo[spd->cid].subsys);
}
return NOTIFY_DONE;
}
static const struct file_operations fops = {
.open = fastrpc_device_open,
.release = fastrpc_device_release,
.unlocked_ioctl = fastrpc_device_ioctl,
.compat_ioctl = compat_fastrpc_device_ioctl,
};
static const struct of_device_id fastrpc_match_table[] = {
{ .compatible = "qcom,msm-fastrpc-adsp", },
{ .compatible = "qcom,msm-fastrpc-compute", },
{ .compatible = "qcom,msm-fastrpc-compute-cb", },
{ .compatible = "qcom,msm-fastrpc-legacy-compute", },
{ .compatible = "qcom,msm-fastrpc-legacy-compute-cb", },
{ .compatible = "qcom,msm-adsprpc-mem-region", },
{}
};
static int fastrpc_cb_probe(struct device *dev)
{
struct fastrpc_channel_ctx *chan;
struct fastrpc_session_ctx *sess;
struct of_phandle_args iommuspec;
struct fastrpc_apps *me = &gfa;
const char *name;
int err = 0, cid = -1, i = 0;
u32 sharedcb_count = 0, j = 0;
uint32_t dma_addr_pool[2] = {0, 0};
VERIFY(err, NULL != (name = of_get_property(dev->of_node,
"label", NULL)));
if (err)
goto bail;
for (i = 0; i < NUM_CHANNELS; i++) {
if (!gcinfo[i].name)
continue;
if (!strcmp(name, gcinfo[i].name))
break;
}
VERIFY(err, i < NUM_CHANNELS);
if (err)
goto bail;
cid = i;
chan = &gcinfo[i];
VERIFY(err, chan->sesscount < NUM_SESSIONS);
if (err)
goto bail;
err = of_parse_phandle_with_args(dev->of_node, "iommus",
"#iommu-cells", 0, &iommuspec);
if (err) {
pr_err("adsprpc: %s: parsing iommu arguments failed for %s with err %d\n",
__func__, dev_name(dev), err);
goto bail;
}
sess = &chan->session[chan->sesscount];
sess->used = 0;
sess->smmu.coherent = of_property_read_bool(dev->of_node,
"dma-coherent");
sess->smmu.secure = of_property_read_bool(dev->of_node,
"qcom,secure-context-bank");
sess->smmu.cb = iommuspec.args[0] & 0xf;
sess->smmu.dev = dev;
sess->smmu.dev_name = dev_name(dev);
sess->smmu.enabled = 1;
if (!sess->smmu.dev->dma_parms)
sess->smmu.dev->dma_parms = devm_kzalloc(sess->smmu.dev,
sizeof(*sess->smmu.dev->dma_parms), GFP_KERNEL);
dma_set_max_seg_size(sess->smmu.dev, DMA_BIT_MASK(32));
dma_set_seg_boundary(sess->smmu.dev, (unsigned long)DMA_BIT_MASK(64));
of_property_read_u32_array(dev->of_node, "qcom,iommu-dma-addr-pool",
dma_addr_pool, 2);
me->max_size_limit = (dma_addr_pool[1] == 0 ? 0x78000000 :
dma_addr_pool[1]);
if (of_get_property(dev->of_node, "shared-cb", NULL) != NULL) {
err = of_property_read_u32(dev->of_node, "shared-cb",
&sharedcb_count);
if (err)
goto bail;
if (sharedcb_count > 0) {
struct fastrpc_session_ctx *dup_sess;
for (j = 1; j < sharedcb_count &&
chan->sesscount < NUM_SESSIONS; j++) {
chan->sesscount++;
dup_sess = &chan->session[chan->sesscount];
memcpy(dup_sess, sess,
sizeof(struct fastrpc_session_ctx));
}
}
}
chan->sesscount++;
if (debugfs_root) {
debugfs_global_file = debugfs_create_file("global", 0644,
debugfs_root, NULL, &debugfs_fops);
if (IS_ERR_OR_NULL(debugfs_global_file)) {
pr_warn("Error: %s: %s: failed to create debugfs global file\n",
current->comm, __func__);
debugfs_global_file = NULL;
}
}
bail:
return err;
}
static int fastrpc_cb_legacy_probe(struct device *dev)
{
struct fastrpc_channel_ctx *chan;
struct fastrpc_session_ctx *first_sess = NULL, *sess = NULL;
struct fastrpc_apps *me = &gfa;
const char *name;
unsigned int *sids = NULL, sids_size = 0;
int err = 0, ret = 0, i;
uint32_t dma_addr_pool[2] = {0, 0};
VERIFY(err, NULL != (name = of_get_property(dev->of_node,
"label", NULL)));
if (err)
goto bail;
for (i = 0; i < NUM_CHANNELS; i++) {
if (!gcinfo[i].name)
continue;
if (!strcmp(name, gcinfo[i].name))
break;
}
VERIFY(err, i < NUM_CHANNELS);
if (err)
goto bail;
chan = &gcinfo[i];
VERIFY(err, chan->sesscount < NUM_SESSIONS);
if (err)
goto bail;
first_sess = &chan->session[chan->sesscount];
VERIFY(err, NULL != of_get_property(dev->of_node,
"sids", &sids_size));
if (err)
goto bail;
VERIFY(err, NULL != (sids = kzalloc(sids_size, GFP_KERNEL)));
if (err)
goto bail;
ret = of_property_read_u32_array(dev->of_node, "sids", sids,
sids_size/sizeof(unsigned int));
if (ret)
goto bail;
if (err)
goto bail;
for (i = 0; i < sids_size/sizeof(unsigned int); i++) {
VERIFY(err, chan->sesscount < NUM_SESSIONS);
if (err)
goto bail;
sess = &chan->session[chan->sesscount];
sess->smmu.cb = sids[i];
sess->smmu.dev = dev;
sess->smmu.dev_name = dev_name(dev);
sess->smmu.enabled = 1;
sess->used = 0;
sess->smmu.coherent = false;
sess->smmu.secure = false;
chan->sesscount++;
if (!sess->smmu.dev->dma_parms)
sess->smmu.dev->dma_parms = devm_kzalloc(sess->smmu.dev,
sizeof(*sess->smmu.dev->dma_parms), GFP_KERNEL);
dma_set_max_seg_size(sess->smmu.dev, DMA_BIT_MASK(32));
dma_set_seg_boundary(sess->smmu.dev,
(unsigned long)DMA_BIT_MASK(64));
}
of_property_read_u32_array(dev->of_node, "qcom,iommu-dma-addr-pool",
dma_addr_pool, 2);
me->max_size_limit = (dma_addr_pool[1] == 0 ? 0x78000000 :
dma_addr_pool[1]);
bail:
kfree(sids);
return err;
}
static void init_secure_vmid_list(struct device *dev, char *prop_name,
struct secure_vm *destvm)
{
int err = 0;
u32 len = 0, i = 0;
u32 *rhvmlist = NULL;
u32 *rhvmpermlist = NULL;
if (!of_find_property(dev->of_node, prop_name, &len))
goto bail;
if (len == 0)
goto bail;
len /= sizeof(u32);
VERIFY(err, NULL != (rhvmlist = kcalloc(len, sizeof(u32), GFP_KERNEL)));
if (err)
goto bail;
VERIFY(err, NULL != (rhvmpermlist = kcalloc(len, sizeof(u32),
GFP_KERNEL)));
if (err)
goto bail;
for (i = 0; i < len; i++) {
err = of_property_read_u32_index(dev->of_node, prop_name, i,
&rhvmlist[i]);
rhvmpermlist[i] = PERM_READ | PERM_WRITE | PERM_EXEC;
pr_info("adsprpc: %s: secure VMID = %d\n",
__func__, rhvmlist[i]);
if (err) {
pr_err("adsprpc: %s: failed to read VMID\n", __func__);
goto bail;
}
}
destvm->vmid = rhvmlist;
destvm->vmperm = rhvmpermlist;
destvm->vmcount = len;
bail:
if (err) {
kfree(rhvmlist);
kfree(rhvmpermlist);
}
}
static void init_qos_cores_list(struct device *dev, char *prop_name,
struct qos_cores *silvercores)
{
int err = 0;
u32 len = 0, i = 0;
u32 *coreslist = NULL;
if (!of_find_property(dev->of_node, prop_name, &len))
goto bail;
if (len == 0)
goto bail;
len /= sizeof(u32);
VERIFY(err, NULL != (coreslist = kcalloc(len, sizeof(u32),
GFP_KERNEL)));
if (err)
goto bail;
for (i = 0; i < len; i++) {
err = of_property_read_u32_index(dev->of_node, prop_name, i,
&coreslist[i]);
if (err) {
pr_err("adsprpc: %s: failed to read QOS cores list\n",
__func__);
goto bail;
}
}
silvercores->coreno = coreslist;
silvercores->corecount = len;
bail:
if (err) {
kfree(coreslist);
}
}
static void configure_secure_channels(uint32_t secure_domains)
{
struct fastrpc_apps *me = &gfa;
int ii = 0;
/*
* secure_domains contains the bitmask of the secure channels
* Bit 0 - ADSP
* Bit 1 - MDSP
* Bit 2 - SLPI
* Bit 3 - CDSP
*/
for (ii = ADSP_DOMAIN_ID; ii <= CDSP_DOMAIN_ID; ++ii) {
int secure = (secure_domains >> ii) & 0x01;
me->channel[ii].secure = secure;
}
}
static int fastrpc_probe(struct platform_device *pdev)
{
int err = 0;
struct fastrpc_apps *me = &gfa;
struct device *dev = &pdev->dev;
struct smq_phy_page range;
struct device_node *ion_node, *node;
struct platform_device *ion_pdev;
struct cma *cma;
uint32_t val;
int ret = 0;
uint32_t secure_domains;
int session = -1, cid = -1;
if (of_device_is_compatible(dev->of_node,
"qcom,msm-fastrpc-compute")) {
init_secure_vmid_list(dev, "qcom,adsp-remoteheap-vmid",
&gcinfo[0].rhvm);
init_qos_cores_list(dev, "qcom,qos-cores",
&me->silvercores);
of_property_read_u32(dev->of_node, "qcom,rpc-latency-us",
&me->latency);
if (of_get_property(dev->of_node,
"qcom,secure-domains", NULL) != NULL) {
VERIFY(err, !of_property_read_u32(dev->of_node,
"qcom,secure-domains",
&secure_domains));
if (!err)
configure_secure_channels(secure_domains);
else
pr_info("adsprpc: unable to read the domain configuration from dts\n");
}
}
if (of_device_is_compatible(dev->of_node,
"qcom,msm-fastrpc-compute-cb"))
return fastrpc_cb_probe(dev);
if (of_device_is_compatible(dev->of_node,
"qcom,msm-fastrpc-legacy-compute-cb"))
return fastrpc_cb_legacy_probe(dev);
if (of_device_is_compatible(dev->of_node,
"qcom,msm-adsprpc-mem-region")) {
me->dev = dev;
range.addr = 0;
ion_node = of_find_compatible_node(NULL, NULL, "qcom,msm-ion");
if (ion_node) {
for_each_available_child_of_node(ion_node, node) {
if (of_property_read_u32(node, "reg", &val))
continue;
if (val != ION_ADSP_HEAP_ID)
continue;
ion_pdev = of_find_device_by_node(node);
if (!ion_pdev)
break;
cma = dev_get_cma_area(&ion_pdev->dev);
if (cma) {
range.addr = cma_get_base(cma);
range.size = (size_t)cma_get_size(cma);
}
break;
}
}
if (range.addr && !of_property_read_bool(dev->of_node,
"restrict-access")) {
int srcVM[1] = {VMID_HLOS};
int destVM[4] = {VMID_HLOS, VMID_MSS_MSA, VMID_SSC_Q6,
VMID_ADSP_Q6};
int destVMperm[4] = {PERM_READ | PERM_WRITE | PERM_EXEC,
PERM_READ | PERM_WRITE | PERM_EXEC,
PERM_READ | PERM_WRITE | PERM_EXEC,
PERM_READ | PERM_WRITE | PERM_EXEC,
};
err = hyp_assign_phys(range.addr, range.size,
srcVM, 1, destVM, destVMperm, 4);
if (err)
goto bail;
me->range.addr = range.addr;
me->range.size = range.size;
}
me->ramdump_handle = create_ramdump_device("adsp_rh",
&pdev->dev);
return 0;
}
me->legacy_remote_heap = of_property_read_bool(dev->of_node,
"qcom,fastrpc-legacy-remote-heap");
if (of_property_read_bool(dev->of_node,
"qcom,fastrpc-adsp-audio-pdr")) {
err = fastrpc_get_spd_session(
AUDIO_PDR_SERVICE_LOCATION_CLIENT_NAME, &session, &cid);
if (err)
goto spdbail;
me->channel[cid].spd[session].get_service_nb.notifier_call =
fastrpc_get_service_location_notify;
ret = get_service_location(
AUDIO_PDR_SERVICE_LOCATION_CLIENT_NAME,
AUDIO_PDR_ADSP_SERVICE_NAME,
&me->channel[cid].spd[session].get_service_nb);
if (ret)
pr_warn("adsprpc: %s: get service location failed with %d for %s (%s)\n",
__func__, ret, AUDIO_PDR_ADSP_SERVICE_NAME,
AUDIO_PDR_SERVICE_LOCATION_CLIENT_NAME);
else
pr_info("adsprpc: %s: service location enabled for %s (%s)\n",
__func__, AUDIO_PDR_ADSP_SERVICE_NAME,
AUDIO_PDR_SERVICE_LOCATION_CLIENT_NAME);
}
if (of_property_read_bool(dev->of_node,
"qcom,fastrpc-adsp-sensors-pdr")) {
err = fastrpc_get_spd_session(
SENSORS_PDR_ADSP_SERVICE_LOCATION_CLIENT_NAME, &session, &cid);
if (err)
goto spdbail;
me->channel[cid].spd[session].get_service_nb.notifier_call =
fastrpc_get_service_location_notify;
ret = get_service_location(
SENSORS_PDR_ADSP_SERVICE_LOCATION_CLIENT_NAME,
SENSORS_PDR_ADSP_SERVICE_NAME,
&me->channel[cid].spd[session].get_service_nb);
if (ret)
pr_warn("adsprpc: %s: get service location failed with %d for %s (%s)\n",
__func__, ret, SENSORS_PDR_SLPI_SERVICE_NAME,
SENSORS_PDR_ADSP_SERVICE_LOCATION_CLIENT_NAME);
else
pr_info("adsprpc: %s: service location enabled for %s (%s)\n",
__func__, SENSORS_PDR_SLPI_SERVICE_NAME,
SENSORS_PDR_ADSP_SERVICE_LOCATION_CLIENT_NAME);
}
if (of_property_read_bool(dev->of_node,
"qcom,fastrpc-slpi-sensors-pdr")) {
err = fastrpc_get_spd_session(
SENSORS_PDR_SLPI_SERVICE_LOCATION_CLIENT_NAME, &session, &cid);
if (err)
goto spdbail;
me->channel[cid].spd[session].get_service_nb.notifier_call =
fastrpc_get_service_location_notify;
ret = get_service_location(
SENSORS_PDR_SLPI_SERVICE_LOCATION_CLIENT_NAME,
SENSORS_PDR_SLPI_SERVICE_NAME,
&me->channel[cid].spd[session].get_service_nb);
if (ret)
pr_warn("adsprpc: %s: get service location failed with %d for %s (%s)\n",
__func__, ret, SENSORS_PDR_SLPI_SERVICE_NAME,
SENSORS_PDR_SLPI_SERVICE_LOCATION_CLIENT_NAME);
else
pr_info("adsprpc: %s: service location enabled for %s (%s)\n",
__func__, SENSORS_PDR_SLPI_SERVICE_NAME,
SENSORS_PDR_SLPI_SERVICE_LOCATION_CLIENT_NAME);
}
spdbail:
err = of_platform_populate(pdev->dev.of_node,
fastrpc_match_table,
NULL, &pdev->dev);
if (err)
goto bail;
bail:
return err;
}
static void fastrpc_deinit(void)
{
struct fastrpc_channel_ctx *chan = gcinfo;
int i, j;
for (i = 0; i < NUM_CHANNELS; i++, chan++) {
for (j = 0; j < NUM_SESSIONS; j++) {
struct fastrpc_session_ctx *sess = &chan->session[j];
if (sess->smmu.dev)
sess->smmu.dev = NULL;
}
kfree(chan->rhvm.vmid);
kfree(chan->rhvm.vmperm);
}
}
static struct platform_driver fastrpc_driver = {
.probe = fastrpc_probe,
.driver = {
.name = "fastrpc",
.of_match_table = fastrpc_match_table,
.suppress_bind_attrs = true,
},
};
static const struct rpmsg_device_id fastrpc_rpmsg_match[] = {
{ FASTRPC_GLINK_GUID },
{ FASTRPC_SMD_GUID },
};
static const struct of_device_id fastrpc_rpmsg_of_match[] = {
{ .compatible = "qcom,msm-fastrpc-rpmsg" },
{ },
};
MODULE_DEVICE_TABLE(of, fastrpc_rpmsg_of_match);
static struct rpmsg_driver fastrpc_rpmsg_client = {
.id_table = fastrpc_rpmsg_match,
.probe = fastrpc_rpmsg_probe,
.remove = fastrpc_rpmsg_remove,
.callback = fastrpc_rpmsg_callback,
.drv = {
.name = "qcom,msm_fastrpc_rpmsg",
.of_match_table = fastrpc_rpmsg_of_match,
},
};
static int __init fastrpc_device_init(void)
{
struct fastrpc_apps *me = &gfa;
struct device *dev = NULL;
struct device *secure_dev = NULL;
int err = 0, i;
debugfs_root = debugfs_create_dir("adsprpc", NULL);
if (IS_ERR_OR_NULL(debugfs_root)) {
pr_warn("Error: %s: %s: failed to create debugfs root dir\n",
current->comm, __func__);
debugfs_remove_recursive(debugfs_root);
debugfs_root = NULL;
}
memset(me, 0, sizeof(*me));
fastrpc_init(me);
me->dev = NULL;
me->legacy_remote_heap = 0;
VERIFY(err, 0 == platform_driver_register(&fastrpc_driver));
if (err)
goto register_bail;
VERIFY(err, 0 == alloc_chrdev_region(&me->dev_no, 0, NUM_CHANNELS,
DEVICE_NAME));
if (err)
goto alloc_chrdev_bail;
cdev_init(&me->cdev, &fops);
me->cdev.owner = THIS_MODULE;
VERIFY(err, 0 == cdev_add(&me->cdev, MKDEV(MAJOR(me->dev_no), 0),
NUM_DEVICES));
if (err)
goto cdev_init_bail;
me->class = class_create(THIS_MODULE, "fastrpc");
VERIFY(err, !IS_ERR(me->class));
if (err)
goto class_create_bail;
me->compat = (fops.compat_ioctl == NULL) ? 0 : 1;
/*
* Create devices and register with sysfs
* Create first device with minor number 0
*/
dev = device_create(me->class, NULL,
MKDEV(MAJOR(me->dev_no), MINOR_NUM_DEV),
NULL, DEVICE_NAME);
VERIFY(err, !IS_ERR_OR_NULL(dev));
if (err)
goto device_create_bail;
/* Create secure device with minor number for secure device */
secure_dev = device_create(me->class, NULL,
MKDEV(MAJOR(me->dev_no), MINOR_NUM_SECURE_DEV),
NULL, DEVICE_NAME_SECURE);
VERIFY(err, !IS_ERR_OR_NULL(secure_dev));
if (err)
goto device_create_bail;
for (i = 0; i < NUM_CHANNELS; i++) {
me->jobid[i] = 1;
me->channel[i].dev = secure_dev;
if (i == CDSP_DOMAIN_ID)
me->channel[i].dev = dev;
me->channel[i].ssrcount = 0;
me->channel[i].prevssrcount = 0;
me->channel[i].issubsystemup = 1;
me->channel[i].ramdumpenabled = 0;
me->channel[i].rh_dump_dev = NULL;
me->channel[i].nb.notifier_call = fastrpc_restart_notifier_cb;
me->channel[i].handle = subsys_notif_register_notifier(
gcinfo[i].subsys,
&me->channel[i].nb);
if (IS_ERR_OR_NULL(me->channel[i].handle))
pr_warn("adsprpc: %s: SSR notifier register failed for %s with err %d\n",
__func__, gcinfo[i].subsys,
PTR_ERR(me->channel[i].handle));
else
pr_info("adsprpc: %s: SSR notifier registered for %s\n",
__func__, gcinfo[i].subsys);
}
err = register_rpmsg_driver(&fastrpc_rpmsg_client);
if (err) {
pr_err("adsprpc: %s: register_rpmsg_driver failed with err %d\n",
__func__, err);
goto device_create_bail;
}
me->rpmsg_register = 1;
fastrpc_register_wakeup_source(me->non_secure_dev,
FASTRPC_NON_SECURE_WAKE_SOURCE_CLIENT_NAME,
&me->wake_source);
fastrpc_register_wakeup_source(me->secure_dev,
FASTRPC_SECURE_WAKE_SOURCE_CLIENT_NAME,
&me->wake_source_secure);
return 0;
device_create_bail:
for (i = 0; i < NUM_CHANNELS; i++) {
if (me->channel[i].handle)
subsys_notif_unregister_notifier(me->channel[i].handle,
&me->channel[i].nb);
}
if (!IS_ERR_OR_NULL(dev))
device_destroy(me->class, MKDEV(MAJOR(me->dev_no),
MINOR_NUM_DEV));
if (!IS_ERR_OR_NULL(secure_dev))
device_destroy(me->class, MKDEV(MAJOR(me->dev_no),
MINOR_NUM_SECURE_DEV));
class_destroy(me->class);
class_create_bail:
cdev_del(&me->cdev);
cdev_init_bail:
unregister_chrdev_region(me->dev_no, NUM_CHANNELS);
alloc_chrdev_bail:
register_bail:
fastrpc_deinit();
return err;
}
static void __exit fastrpc_device_exit(void)
{
struct fastrpc_apps *me = &gfa;
int i;
fastrpc_file_list_dtor(me);
fastrpc_deinit();
for (i = 0; i < NUM_CHANNELS; i++) {
if (!gcinfo[i].name)
continue;
if (me->channel[i].ipc_log_ctx)
ipc_log_context_destroy(me->channel[i].ipc_log_ctx);
subsys_notif_unregister_notifier(me->channel[i].handle,
&me->channel[i].nb);
}
/* Destroy the secure and non secure devices */
device_destroy(me->class, MKDEV(MAJOR(me->dev_no), MINOR_NUM_DEV));
device_destroy(me->class, MKDEV(MAJOR(me->dev_no),
MINOR_NUM_SECURE_DEV));
class_destroy(me->class);
cdev_del(&me->cdev);
unregister_chrdev_region(me->dev_no, NUM_CHANNELS);
if (me->rpmsg_register == 1)
unregister_rpmsg_driver(&fastrpc_rpmsg_client);
if (me->wake_source)
wakeup_source_unregister(me->wake_source);
if (me->wake_source_secure)
wakeup_source_unregister(me->wake_source_secure);
debugfs_remove_recursive(debugfs_root);
}
late_initcall(fastrpc_device_init);
module_exit(fastrpc_device_exit);
MODULE_LICENSE("GPL v2");
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