struct psc_memnode *
psc_memnode_get(void)
{
struct psc_memnode *pmn, **pmnv;
int memnid, rc;
pmn = pthread_getspecific(psc_memnodes_key);
if (pmn)
return (pmn);
memnid = psc_memnode_getid();
spinlock(&psc_memnodes_lock);
if (psc_dynarray_ensurelen(&psc_memnodes, memnid + 1) == -1)
psc_fatalx("ensurelen");
pmnv = psc_dynarray_get_mutable(&psc_memnodes);
pmn = pmnv[memnid];
if (pmn == NULL) {
pmn = psc_alloc(sizeof(*pmn), PAF_NOLOG);
INIT_SPINLOCK(&pmn->pmn_lock);
psc_dynarray_init(&pmn->pmn_keys);
rc = pthread_setspecific(psc_memnodes_key, pmn);
if (rc)
psc_fatalx("pthread_setspecific: %s",
strerror(rc));
psc_dynarray_setpos(&psc_memnodes, memnid, pmn);
}
freelock(&psc_memnodes_lock);
return (pmn);
}
void add_endpoint(UsbDevice * udev, EndpointDesc * endpoint_desc)
{
List * endpointListHook;
EndpointHandle * endpointHandle;
endpointHandle = ALLOC(sizeof(EndpointHandle));
endpointHandle->process = create_process(udev->workqueue);
endpointHandle->endpoint = ALLOC(sizeof(Endpoint));
endpointHandle->endpoint->p_endpoint_desc = endpoint_desc;
endpointHandle->endpoint->timeout = STD_TIMEOUT;
INIT_SPINLOCK(&endpointHandle->endpoint->lock);
endpointHandle->endpoint->complete_transfers = NULL;
endpointHandle->endpoint->pending_transfers = NULL;
endpointHandle->callback = NULL;
endpointHandle->context = NULL;
endpointListHook = ALLOC(sizeof(List));
endpointListHook->data = endpointHandle;
pushBack(&udev->endpoints_handles, endpointListHook);
}
void
psc_compl_init(struct psc_compl *pc)
{
memset(pc, 0, sizeof(*pc));
INIT_SPINLOCK(&pc->pc_lock);
pfl_waitq_init(&pc->pc_wq, "completion");
}
void
mds_bmap_timeotbl_init(void)
{
INIT_SPINLOCK(&mdsBmapTimeoTbl.btt_lock);
pll_init(&mdsBmapTimeoTbl.btt_leases, struct bmap_mds_lease,
bml_timeo_lentry, &mdsBmapTimeoTbl.btt_lock);
}
void
pfl_odt_load(struct pfl_odt **tp, struct pfl_odt_ops *odtops, int oflg,
const char *fn, const char *fmt, ...)
{
struct pfl_odt_hdr *h;
struct pfl_odt *t;
uint64_t crc;
va_list ap;
*tp = t = PSCALLOC(sizeof(*t));
t->odt_ops = *odtops;
INIT_SPINLOCK(&t->odt_lock);
INIT_PSC_LISTENTRY(&t->odt_lentry);
va_start(ap, fmt);
vsnprintf(t->odt_name, sizeof(t->odt_name), fmt, ap);
va_end(ap);
t->odt_iostats.rd = pfl_opstat_init("odt-%s-rd", t->odt_name);
t->odt_iostats.wr = pfl_opstat_init("odt-%s-wr", t->odt_name);
h = t->odt_hdr = PSCALLOC(sizeof(*h));
/* pfl_odt_open() and slm_odt_open() */
odtops->odtop_open(t, fn, oflg);
psc_crc64_calc(&crc, t->odt_hdr, sizeof(*t->odt_hdr) -
sizeof(t->odt_hdr->odth_crc));
pfl_assert(h->odth_crc == crc);
t->odt_bitmap = psc_vbitmap_newf(h->odth_nitems, PVBF_AUTO);
pfl_assert(t->odt_bitmap);
/*
* Skip the first slot, so that we can detect whether we have
* assigned a lease easily.
*/
psc_vbitmap_set(t->odt_bitmap, 0);
PFLOG_ODT(PLL_DIAG, t, "loaded");
pll_add(&pfl_odtables, t);
}
void
_pll_initf(struct psc_lockedlist *pll, int offset, psc_spinlock_t *lkp,
int flags)
{
memset(pll, 0, sizeof(*pll));
INIT_PSCLIST_HEAD(&pll->pll_listhd);
pll->pll_flags = flags;
if (lkp) {
pll->pll_flags |= PLLF_EXTLOCK;
pll->pll_lockp = lkp;
} else {
if (flags & PLLF_LOGTMP)
INIT_SPINLOCK_LOGTMP(&pll->pll_lock);
else if (flags & PLLF_NOLOG)
INIT_SPINLOCK_NOLOG(&pll->pll_lock);
else
INIT_SPINLOCK(&pll->pll_lock);
}
pll->pll_offset = offset;
}
int
pfl_odt_create(const char *fn, int64_t nitems, size_t itemsz,
int overwrite, size_t startoff, size_t pad, int tflg)
{
int rc;
int64_t item;
struct pfl_odt_slotftr f;
struct pfl_odt_hdr *h;
struct pfl_odt *t;
t = PSCALLOC(sizeof(*t));
t->odt_ops = pfl_odtops;
INIT_SPINLOCK(&t->odt_lock);
snprintf(t->odt_name, sizeof(t->odt_name), "%s", pfl_basename(fn));
t->odt_iostats.rd = pfl_opstat_init("odt-%s-rd", t->odt_name);
t->odt_iostats.wr = pfl_opstat_init("odt-%s-wr", t->odt_name);
h = PSCALLOC(sizeof(*h));
memset(h, 0, sizeof(*h));
h->odth_nitems = nitems;
h->odth_itemsz = itemsz;
h->odth_slotsz = itemsz + pad + sizeof(f);
h->odth_options = tflg;
h->odth_start = startoff;
t->odt_hdr = h;
psc_crc64_calc(&h->odth_crc, h, sizeof(*h) - sizeof(h->odth_crc));
/* pfl_odt_new() and slm_odt_new() */
rc = t->odt_ops.odtop_new(t, fn, overwrite);
if (rc)
return (rc);
for (item = 0; item < nitems; item++)
_pfl_odt_doput(t, item, NULL, &f, 0);
PFLOG_ODT(PLL_DIAG, t, "created");
pfl_odt_release(t);
return (0);
}
/**
* psc_fault_register -
*/
struct psc_fault *
_psc_fault_register(const char *name)
{
struct psc_fault *pflt;
char *p;
pflt = psc_fault_lookup(name);
psc_assert(pflt == NULL);
p = strstr(name, "_FAULT_");
psc_assert(p);
psc_assert(strlen(p + 7) < sizeof(pflt->pflt_name));
/* expected format: <daemon>_FAULT_<fault-name> */
pflt = &psc_faults[psc_nfaults++];
INIT_SPINLOCK(&pflt->pflt_lock);
strlcpy(pflt->pflt_name, p + 7, sizeof(pflt->pflt_name));
for (p = pflt->pflt_name; *p; p++)
*p = tolower(*p);
pflt->pflt_chance = 100;
pflt->pflt_count = -1;
return (pflt);
}
/*
* Lookup and optionally create a new bmap structure.
* @f: file's bmap tree to search.
* @n: bmap index number to search for.
* @new_bmap: whether to allow creation and also value-result of whether
* it was newly created or not.
*/
struct bmap *
bmap_lookup_cache(struct fidc_membh *f, sl_bmapno_t n, int bmaprw,
int *new_bmap)
{
struct bmap lb, *b, *bnew = NULL;
int doalloc;
doalloc = *new_bmap;
lb.bcm_bmapno = n;
restart:
if (bnew)
pfl_rwlock_wrlock(&f->fcmh_rwlock);
else
pfl_rwlock_rdlock(&f->fcmh_rwlock);
b = RB_FIND(bmaptree, &f->fcmh_bmaptree, &lb);
if (b) {
if (!BMAP_TRYLOCK(b)) {
pfl_rwlock_unlock(&f->fcmh_rwlock);
usleep(10);
goto restart;
}
if (b->bcm_flags & BMAPF_TOFREE) {
/*
* This bmap is going away; wait for it so we
* can reload it back.
*/
DEBUG_BMAP(PLL_DIAG, b, "wait on to-free bmap");
BMAP_ULOCK(b);
/*
* We don't want to spin if we are waiting for a
* flush to clear.
*/
psc_waitq_waitrelf_us(&f->fcmh_waitq,
PFL_LOCKPRIMT_RWLOCK, &f->fcmh_rwlock, 100);
goto restart;
}
bmap_op_start_type(b, BMAP_OPCNT_LOOKUP);
}
if (doalloc == 0 || b) {
pfl_rwlock_unlock(&f->fcmh_rwlock);
if (bnew)
psc_pool_return(bmap_pool, bnew);
*new_bmap = 0;
OPSTAT_INCR("bmapcache.hit");
return (b);
}
if (bnew == NULL) {
pfl_rwlock_unlock(&f->fcmh_rwlock);
if (sl_bmap_ops.bmo_reapf)
sl_bmap_ops.bmo_reapf();
bnew = psc_pool_get(bmap_pool);
goto restart;
}
b = bnew;
OPSTAT_INCR("bmapcache.miss");
*new_bmap = 1;
memset(b, 0, bmap_pool->ppm_master->pms_entsize);
INIT_PSC_LISTENTRY(&b->bcm_lentry);
INIT_SPINLOCK(&b->bcm_lock);
psc_atomic32_set(&b->bcm_opcnt, 0);
b->bcm_fcmh = f;
b->bcm_bmapno = n;
/*
* Signify that the bmap is newly initialized and therefore may
* not contain certain structures.
*/
psc_assert(bmaprw == BMAPF_RD || bmaprw == BMAPF_WR);
b->bcm_flags = bmaprw;
bmap_op_start_type(b, BMAP_OPCNT_LOOKUP);
/*
* Perform app-specific substructure initialization, which is
* msl_bmap_init(), iod_bmap_init(), or mds_bmap_init().
*/
sl_bmap_ops.bmo_init_privatef(b);
/* Add to the fcmh's bmap cache */
PSC_RB_XINSERT(bmaptree, &f->fcmh_bmaptree, b);
pfl_rwlock_unlock(&f->fcmh_rwlock);
fcmh_op_start_type(f, FCMH_OPCNT_BMAP);
BMAP_LOCK(b);
return (b);
}
*
* Notes: No warranty expressed or implied. Use at own risk. */
#include "kernel/kernel.h"
// Ring buffer to hold raw scan codes. Insert at head, remove at
// tail, drop chars if buffer is full.
static uint8 kbd_buffer[KBD_BUFFER_SIZE];
static int buf_head = 0;
static int buf_tail = 0;
// Current keyboard state (bit flags)
//static uint16 kbd_flags = 0;
// Synchronize access between ISR and higher level functions.
// Used to guard access to ring-buffer and flags.
static spinlock kbd_lock = INIT_SPINLOCK("kbd");
/* KBDUS means US Keyboard Layout. This is a scancode table
* used to layout a standard US keyboard. I have left some
* comments in to give you an idea of what key is what, even
* though I set it's array index to 0. You can change that to
* whatever you want using a macro, if you wish! */
unsigned char kbdus[128] =
{
0, 27, '1', '2', '3', '4', '5', '6', '7', '8', /* 9 */
'9', '0', '-', '=', '\b', /* Backspace */
'\t', /* Tab */
'q', 'w', 'e', 'r', /* 19 */
't', 'y', 'u', 'i', 'o', 'p', '[', ']', '\n', /* Enter key */
0, /* 29 - Control */
'a', 's', 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', /* 39 */
#include <types.h>
#include <errno.h>
#include <console.h>
#include <kernel.h>
#include <macros.h>
#include <mm/kmalloc.h>
#include <mm/pages.h>
#include <lib/string.h>
#include <arch/spinlock.h>
#include <arch/mm/config.h>
static uint32_t used_pages = 0;
static uint32_t alloc_size = 0;
static spinlock_t kmalloc_lock = INIT_SPINLOCK("kmalloc");
static kmalloc_block_t* root = NULL;
static inline int kmalloc_block_validate(kmalloc_block_t* block) {
return (block->magic == KMALLOC_BLOCK_MAGIC);
}
static inline int kmalloc_chunk_validate(kmalloc_chunk_t* chunk) {
return ((chunk->magic & 0xFFFFFFF0) == KMALLOC_CHUNK_MAGIC);
}
static inline void kmalloc_chunk_set_free(kmalloc_chunk_t* chunk, int free) {
if (free) {
chunk->magic |= CHUNK_FREE;
} else {
chunk->magic &= ~CHUNK_FREE;