WebSVN – freemyipod – Diff – /embios/trunk/target/ipodnano2g/ftl.c



const struct nand_device_info_type* ftl_nand_type;
 
/* Number of banks we detected a chip on */
uint32_t ftl_banks;
 
/* Number of banks we detected a chip on (power of two) */
uint32_t ftl_banks_exponent;
 
/* Block map, used vor pBlock to vBlock mapping */
static uint16_t ftl_map[0x2000] CACHEALIGN_ATTR;
 
/* VFL context for each bank */
static struct ftl_vfl_cxt_type ftl_vfl_cxt[4];

 
 
static struct mutex ftl_mtx;
bool ftl_initialized = false;
 
/* Pages per hyperblock (ftl_nand_type->pagesperblock * ftl_banks) */
static uint32_t ppb;
 
/* Pages per hyperblock (power of two) */
static uint32_t ppb_exponent;
 
/* Reserved hyperblocks (ftl_nand_type->blocks
                       - ftl_nand_type->userblocks - 0x17) */
static uint32_t syshyperblocks;
 
 
/* Finds a device info page for the specified bank and returns its number.
   Used to check if one is present, and to read the lowlevel BBT. */
static uint32_t ftl_find_devinfo(uint32_t bank) INITCODE_ATTR;

{
#ifdef VFL_TRACE
    DEBUGF("FTL: VFL: Reading page %d", vpage);
#endif
 
 
 
 
    uint32_t abspage = vpage + ppb * syshyperblocks;
    if (abspage >= ftl_nand_type->blocks * ppb || abspage < ppb)
    {
        DEBUGF("FTL: Trying to read out-of-bounds vPage %u", (unsigned)vpage);
        return 4;
    }
 
    uint32_t bank = abspage & (ftl_banks - 1);
    uint32_t block = abspage >> ppb_exponent;
    uint32_t page = (abspage >> ftl_banks_exponent) & ((1 << ftl_nand_type->blocksizeexponent) - 1);
    uint32_t physblock = ftl_vfl_get_physical_block(bank, block);
    uint32_t physpage = physblock * ftl_nand_type->pagesperblock + page;
 
    uint32_t ret = nand_read_page(bank, physpage, buffer,
                                  sparebuffer, 1, checkempty);

#ifdef VFL_TRACE
    DEBUGF("FTL: VFL: Fast reading page %d on all banks", vpage);
#endif
 
    uint32_t i, rc = 0;
 
 
 
    uint32_t abspage = vpage + ppb * syshyperblocks;
    if (abspage + ftl_banks - 1 >= ftl_nand_type->blocks * ppb || abspage < ppb)
    {
        DEBUGF("FTL: Trying to read out-of-bounds vPage %u", (unsigned)vpage);
        return 4;
    }
 
    uint32_t bank = abspage & (ftl_banks - 1);
    uint32_t block = abspage >> ppb_exponent;
    uint32_t page = (abspage >> ftl_banks_exponent) & ((1 << ftl_nand_type->blocksizeexponent) - 1);
    uint32_t remapped = 0;
    for (i = 0; i < ftl_banks; i++)
        if (ftl_vfl_get_physical_block(i, block) != block)
            remapped = 1;
    if (bank || remapped)

    uint32_t i, j;
#ifdef VFL_TRACE
    DEBUGF("FTL: VFL: Writing page %d", vpage);
#endif
 
 
 
 
    uint32_t abspage = vpage + ppb * syshyperblocks;
    if (abspage + count > ftl_nand_type->blocks * ppb || abspage < ppb)
    {
        DEBUGF("FTL: Trying to write out-of-bounds vPage %u",
               (unsigned)vpage);

    /* Temporary BBT buffer if we're readonly,
       as we won't need it again after mounting */
    uint8_t bbt[0x410];
#endif
 
 
 
 
    for (i = 0; i < ftl_banks; i++)
#ifndef FTL_READONLY
        if (ftl_load_bbt(i, ftl_bbt[i]) == 0)
#else
        if (ftl_load_bbt(i, bbt) == 0)

static uint32_t ftl_open(void) INITCODE_ATTR;
static uint32_t ftl_open()
{
    uint32_t i;
    uint32_t ret;
 
    struct ftl_vfl_cxt_type* cxt = ftl_vfl_get_newest_cxt();
 
    uint32_t ftlcxtblock = 0xffffffff;
    uint32_t minusn = 0xffffffff;
    for (i = 0; i < 3; i++)

 
/* Exposed function: Read highlevel sectors */
uint32_t ftl_read(uint32_t sector, uint32_t count, void* buffer)
{
    uint32_t i, j;
 
    uint32_t error = 0;
 
    if (!ftl_initialized) return -1;
 
#ifdef FTL_TRACE

/* Increments ftl_cxt.ftlctrlpage to the next available FTL context page,
   allocating a new context block if neccessary. */
static uint32_t ftl_next_ctrl_pool_page(void)
{
    uint32_t i;
 
    if (++ftl_cxt.ftlctrlpage % ppb != 0) return 0;
    for (i = 0; i < 3; i++)
        if ((ftl_cxt.ftlctrlblocks[i] + 1) * ppb == ftl_cxt.ftlctrlpage)
            break;
    i = (i + 1) % 3;

#ifndef FTL_READONLY
/* Copies a vPage from one location to another */
static uint32_t ftl_copy_page(uint32_t source, uint32_t destination,
                              uint32_t lpn, uint32_t type)
{
 
    uint32_t rc = ftl_vfl_read(source, ftl_copybuffer[0],
                               &ftl_copyspare[0], 1, 1) & 0x11F;
    memset(&ftl_copyspare[0], 0xFF, 0x40);
    ftl_copyspare[0].user.lpn = lpn;
    ftl_copyspare[0].user.usn = ++ftl_cxt.nextblockusn;

#ifndef FTL_READONLY
/* Copies a pBlock to a vBlock */
static uint32_t ftl_copy_block(uint32_t source, uint32_t destination)
{
    uint32_t i, j;
 
    uint32_t error = 0;
    ftl_cxt.nextblockusn++;
    for (i = 0; i < ppb; i += FTL_COPYBUF_SIZE)
    {
        uint32_t rc = ftl_read(source * ppb + i,

   removed because it is full, but less than half of the pages in there are
   still in use and rest is just filled with old crap. */
static uint32_t ftl_compact_scattered(struct ftl_log_type* entry)
{
    uint32_t i, j;
 
    uint32_t error;
    struct ftl_log_type backup;
    if (entry->pagescurrent == 0)
    {
        ftl_release_pool_block(entry->scatteredvblock);

   committing it without needing to copy it again.
   If this fails for whichever reason, it will be committed the usual way. */
static uint32_t ftl_commit_sequential(struct ftl_log_type* entry)
{
    uint32_t i;
 
 
    if (entry->issequential != 1
     || entry->pagescurrent != entry->pagesused)
        return 1;
 

   whatever way seems most appropriate. Else, the oldest scattered page block
   will be freed by committing it. */
static uint32_t ftl_remove_scattered_block(struct ftl_log_type* entry)
{
    uint32_t i;
 
    uint32_t age = 0xFFFFFFFF, used = 0;
    if (entry == NULL)
    {
        for (i = 0; i < 0x11; i++)
        {

#ifndef FTL_READONLY
/* Commits the FTL block map, erase counters, and context to flash */
static uint32_t ftl_commit_cxt(void)
{
    uint32_t i;
 
    uint32_t mappages = (ftl_nand_type->userblocks + 0x3ff) >> 10;
    uint32_t ctrpages = (ftl_nand_type->userblocks + 23 + 0x3ff) >> 10;
    uint32_t endpage = ftl_cxt.ftlctrlpage + mappages + ctrpages + 1;
    DEBUGF("FTL: Committing context");
    if (endpage >= (ftl_cxt.ftlctrlpage / ppb + 1) * ppb)

#ifndef FTL_READONLY
/* Exposed function: Write highlevel sectors */
uint32_t ftl_write(uint32_t sector, uint32_t count, const void* buffer)
{
    uint32_t i, j, k;
 
 
    if (!ftl_initialized) return -1;
 
#ifdef FTL_TRACE
    DEBUGF("FTL: Writing %d sectors starting at %d", count, sector);

   distributes wear, and commits the FTL context. */
uint32_t ftl_sync(void)
{
    uint32_t i;
    uint32_t rc = 0;
 
 
    if (!ftl_initialized) return 0;
 
    if (ftl_cxt.clean_flag == 1) return 0;
 
    mutex_lock(&ftl_mtx, TIMEOUT_BLOCK);

        panicf(PANIC_KILLTHREAD, "FTL: Lowlevel NAND driver init failed: %d", rc);
    ftl_banks = 0;
    for (i = 0; i < 4; i++)
        if (nand_get_device_type(i) != 0) ftl_banks = i + 1;
    ftl_nand_type = nand_get_device_type(0);
	ftl_banks_exponent = ftl_banks == 4 ? 2 : ftl_banks == 2 ? 1 : 0;
	ppb_exponent = ftl_nand_type->blocksizeexponent + ftl_banks_exponent;
    ppb = (1 << ppb_exponent);
    syshyperblocks = ftl_nand_type->blocks - ftl_nand_type->userblocks - 0x17;
 
    if (!ftl_has_devinfo())
    {
           DEBUGF("FTL: No DEVICEINFO found!");
        return -1;

Rev 249	Rev 251
Line 362...	Line 362...
362	`const struct nand_device_info_type* ftl_nand_type;`	362	`const struct nand_device_info_type* ftl_nand_type;`
363		363
364	`/* Number of banks we detected a chip on */`	364	`/* Number of banks we detected a chip on */`
365	`uint32_t ftl_banks;`	365	`uint32_t ftl_banks;`
366		366
-		367	`/* Number of banks we detected a chip on (power of two) */`
-		368	`uint32_t ftl_banks_exponent;`
-		369
367	`/* Block map, used vor pBlock to vBlock mapping */`	370	`/* Block map, used vor pBlock to vBlock mapping */`
368	`static uint16_t ftl_map[0x2000] CACHEALIGN_ATTR;`	371	`static uint16_t ftl_map[0x2000] CACHEALIGN_ATTR;`
369		372
370	`/* VFL context for each bank */`	373	`/* VFL context for each bank */`
371	`static struct ftl_vfl_cxt_type ftl_vfl_cxt[4];`	374	`static struct ftl_vfl_cxt_type ftl_vfl_cxt[4];`
Line 431...	Line 434...
431		434
432		435
433	`static struct mutex ftl_mtx;`	436	`static struct mutex ftl_mtx;`
434	`bool ftl_initialized = false;`	437	`bool ftl_initialized = false;`
435		438
-		439	`/* Pages per hyperblock (ftl_nand_type->pagesperblock * ftl_banks) */`
-		440	`static uint32_t ppb;`
-		441
-		442	`/* Pages per hyperblock (power of two) */`
-		443	`static uint32_t ppb_exponent;`
-		444
-		445	`/* Reserved hyperblocks (ftl_nand_type->blocks`
-		446	`- ftl_nand_type->userblocks - 0x17) */`
-		447	`static uint32_t syshyperblocks;`
436		448
437		449
438	`/* Finds a device info page for the specified bank and returns its number.`	450	`/* Finds a device info page for the specified bank and returns its number.`
439	`Used to check if one is present, and to read the lowlevel BBT. */`	451	`Used to check if one is present, and to read the lowlevel BBT. */`
440	`static uint32_t ftl_find_devinfo(uint32_t bank) INITCODE_ATTR;`	452	`static uint32_t ftl_find_devinfo(uint32_t bank) INITCODE_ATTR;`
Line 851...	Line 863...
851	`{`	863	`{`
852	`#ifdef VFL_TRACE`	864	`#ifdef VFL_TRACE`
853	`DEBUGF("FTL: VFL: Reading page %d", vpage);`	865	`DEBUGF("FTL: VFL: Reading page %d", vpage);`
854	`#endif`	866	`#endif`
855		867
856	`uint32_t ppb = ftl_nand_type->pagesperblock * ftl_banks;`	-
857	`uint32_t syshyperblocks = ftl_nand_type->blocks`	-
858	`- ftl_nand_type->userblocks - 0x17;`	-
859	`uint32_t abspage = vpage + ppb * syshyperblocks;`	868	`uint32_t abspage = vpage + ppb * syshyperblocks;`
860	`if (abspage >= ftl_nand_type->blocks * ppb \|\| abspage < ppb)`	869	`if (abspage >= ftl_nand_type->blocks * ppb \|\| abspage < ppb)`
861	`{`	870	`{`
862	`DEBUGF("FTL: Trying to read out-of-bounds vPage %u", (unsigned)vpage);`	871	`DEBUGF("FTL: Trying to read out-of-bounds vPage %u", (unsigned)vpage);`
863	`return 4;`	872	`return 4;`
864	`}`	873	`}`
865		874
866	`uint32_t bank = abspage % ftl_banks;`	875	`uint32_t bank = abspage & (ftl_banks - 1);`
867	`uint32_t block = abspage / (ftl_nand_type->pagesperblock * ftl_banks);`	876	`uint32_t block = abspage >> ppb_exponent;`
868	`uint32_t page = (abspage / ftl_banks) % ftl_nand_type->pagesperblock;`	877	`uint32_t page = (abspage >> ftl_banks_exponent) & ((1 << ftl_nand_type->blocksizeexponent) - 1);`
869	`uint32_t physblock = ftl_vfl_get_physical_block(bank, block);`	878	`uint32_t physblock = ftl_vfl_get_physical_block(bank, block);`
870	`uint32_t physpage = physblock * ftl_nand_type->pagesperblock + page;`	879	`uint32_t physpage = physblock * ftl_nand_type->pagesperblock + page;`
871		880
872	`uint32_t ret = nand_read_page(bank, physpage, buffer,`	881	`uint32_t ret = nand_read_page(bank, physpage, buffer,`
873	`sparebuffer, 1, checkempty);`	882	`sparebuffer, 1, checkempty);`
Line 900...	Line 909...
900	`#ifdef VFL_TRACE`	909	`#ifdef VFL_TRACE`
901	`DEBUGF("FTL: VFL: Fast reading page %d on all banks", vpage);`	910	`DEBUGF("FTL: VFL: Fast reading page %d on all banks", vpage);`
902	`#endif`	911	`#endif`
903		912
904	`uint32_t i, rc = 0;`	913	`uint32_t i, rc = 0;`
905	`uint32_t ppb = ftl_nand_type->pagesperblock * ftl_banks;`	-
906	`uint32_t syshyperblocks = ftl_nand_type->blocks`	-
907	`- ftl_nand_type->userblocks - 0x17;`	-
908	`uint32_t abspage = vpage + ppb * syshyperblocks;`	914	`uint32_t abspage = vpage + ppb * syshyperblocks;`
909	`if (abspage + ftl_banks - 1 >= ftl_nand_type->blocks * ppb \|\| abspage < ppb)`	915	`if (abspage + ftl_banks - 1 >= ftl_nand_type->blocks * ppb \|\| abspage < ppb)`
910	`{`	916	`{`
911	`DEBUGF("FTL: Trying to read out-of-bounds vPage %u", (unsigned)vpage);`	917	`DEBUGF("FTL: Trying to read out-of-bounds vPage %u", (unsigned)vpage);`
912	`return 4;`	918	`return 4;`
913	`}`	919	`}`
914		920
915	`uint32_t bank = abspage % ftl_banks;`	921	`uint32_t bank = abspage & (ftl_banks - 1);`
916	`uint32_t block = abspage / (ftl_nand_type->pagesperblock * ftl_banks);`	922	`uint32_t block = abspage >> ppb_exponent;`
917	`uint32_t page = (abspage / ftl_banks) % ftl_nand_type->pagesperblock;`	923	`uint32_t page = (abspage >> ftl_banks_exponent) & ((1 << ftl_nand_type->blocksizeexponent) - 1);`
918	`uint32_t remapped = 0;`	924	`uint32_t remapped = 0;`
919	`for (i = 0; i < ftl_banks; i++)`	925	`for (i = 0; i < ftl_banks; i++)`
920	`if (ftl_vfl_get_physical_block(i, block) != block)`	926	`if (ftl_vfl_get_physical_block(i, block) != block)`
921	`remapped = 1;`	927	`remapped = 1;`
922	`if (bank \|\| remapped)`	928	`if (bank \|\| remapped)`
Line 976...	Line 982...
976	`uint32_t i, j;`	982	`uint32_t i, j;`
977	`#ifdef VFL_TRACE`	983	`#ifdef VFL_TRACE`
978	`DEBUGF("FTL: VFL: Writing page %d", vpage);`	984	`DEBUGF("FTL: VFL: Writing page %d", vpage);`
979	`#endif`	985	`#endif`
980		986
981	`uint32_t ppb = ftl_nand_type->pagesperblock * ftl_banks;`	-
982	`uint32_t syshyperblocks = ftl_nand_type->blocks`	-
983	`- ftl_nand_type->userblocks - 0x17;`	-
984	`uint32_t abspage = vpage + ppb * syshyperblocks;`	987	`uint32_t abspage = vpage + ppb * syshyperblocks;`
985	`if (abspage + count > ftl_nand_type->blocks * ppb \|\| abspage < ppb)`	988	`if (abspage + count > ftl_nand_type->blocks * ppb \|\| abspage < ppb)`
986	`{`	989	`{`
987	`DEBUGF("FTL: Trying to write out-of-bounds vPage %u",`	990	`DEBUGF("FTL: Trying to write out-of-bounds vPage %u",`
988	`(unsigned)vpage);`	991	`(unsigned)vpage);`
Line 1063...	Line 1066...
1063	`/* Temporary BBT buffer if we're readonly,`	1066	`/* Temporary BBT buffer if we're readonly,`
1064	`as we won't need it again after mounting */`	1067	`as we won't need it again after mounting */`
1065	`uint8_t bbt[0x410];`	1068	`uint8_t bbt[0x410];`
1066	`#endif`	1069	`#endif`
1067		1070
1068	`uint32_t syshyperblocks = ftl_nand_type->blocks`	-
1069	`- ftl_nand_type->userblocks - 0x18;`	-
1070		-
1071	`for (i = 0; i < ftl_banks; i++)`	1071	`for (i = 0; i < ftl_banks; i++)`
1072	`#ifndef FTL_READONLY`	1072	`#ifndef FTL_READONLY`
1073	`if (ftl_load_bbt(i, ftl_bbt[i]) == 0)`	1073	`if (ftl_load_bbt(i, ftl_bbt[i]) == 0)`
1074	`#else`	1074	`#else`
1075	`if (ftl_load_bbt(i, bbt) == 0)`	1075	`if (ftl_load_bbt(i, bbt) == 0)`
Line 1150...	Line 1150...
1150	`static uint32_t ftl_open(void) INITCODE_ATTR;`	1150	`static uint32_t ftl_open(void) INITCODE_ATTR;`
1151	`static uint32_t ftl_open()`	1151	`static uint32_t ftl_open()`
1152	`{`	1152	`{`
1153	`uint32_t i;`	1153	`uint32_t i;`
1154	`uint32_t ret;`	1154	`uint32_t ret;`
1155	`uint32_t ppb = ftl_nand_type->pagesperblock * ftl_banks;`	-
1156	`struct ftl_vfl_cxt_type* cxt = ftl_vfl_get_newest_cxt();`	1155	`struct ftl_vfl_cxt_type* cxt = ftl_vfl_get_newest_cxt();`
1157		1156
1158	`uint32_t ftlcxtblock = 0xffffffff;`	1157	`uint32_t ftlcxtblock = 0xffffffff;`
1159	`uint32_t minusn = 0xffffffff;`	1158	`uint32_t minusn = 0xffffffff;`
1160	`for (i = 0; i < 3; i++)`	1159	`for (i = 0; i < 3; i++)`
Line 1314...	Line 1313...
1314		1313
1315	`/* Exposed function: Read highlevel sectors */`	1314	`/* Exposed function: Read highlevel sectors */`
1316	`uint32_t ftl_read(uint32_t sector, uint32_t count, void* buffer)`	1315	`uint32_t ftl_read(uint32_t sector, uint32_t count, void* buffer)`
1317	`{`	1316	`{`
1318	`uint32_t i, j;`	1317	`uint32_t i, j;`
1319	`uint32_t ppb = ftl_nand_type->pagesperblock * ftl_banks;`	-
1320	`uint32_t error = 0;`	1318	`uint32_t error = 0;`
1321		1319
1322	`if (!ftl_initialized) return -1;`	1320	`if (!ftl_initialized) return -1;`
1323		1321
1324	`#ifdef FTL_TRACE`	1322	`#ifdef FTL_TRACE`
Line 1569...	Line 1567...
1569	`/* Increments ftl_cxt.ftlctrlpage to the next available FTL context page,`	1567	`/* Increments ftl_cxt.ftlctrlpage to the next available FTL context page,`
1570	`allocating a new context block if neccessary. */`	1568	`allocating a new context block if neccessary. */`
1571	`static uint32_t ftl_next_ctrl_pool_page(void)`	1569	`static uint32_t ftl_next_ctrl_pool_page(void)`
1572	`{`	1570	`{`
1573	`uint32_t i;`	1571	`uint32_t i;`
1574	`uint32_t ppb = ftl_nand_type->pagesperblock * ftl_banks;`	-
1575	`if (++ftl_cxt.ftlctrlpage % ppb != 0) return 0;`	1572	`if (++ftl_cxt.ftlctrlpage % ppb != 0) return 0;`
1576	`for (i = 0; i < 3; i++)`	1573	`for (i = 0; i < 3; i++)`
1577	`if ((ftl_cxt.ftlctrlblocks[i] + 1) * ppb == ftl_cxt.ftlctrlpage)`	1574	`if ((ftl_cxt.ftlctrlblocks[i] + 1) * ppb == ftl_cxt.ftlctrlpage)`
1578	`break;`	1575	`break;`
1579	`i = (i + 1) % 3;`	1576	`i = (i + 1) % 3;`
Line 1608...	Line 1605...
1608	`#ifndef FTL_READONLY`	1605	`#ifndef FTL_READONLY`
1609	`/* Copies a vPage from one location to another */`	1606	`/* Copies a vPage from one location to another */`
1610	`static uint32_t ftl_copy_page(uint32_t source, uint32_t destination,`	1607	`static uint32_t ftl_copy_page(uint32_t source, uint32_t destination,`
1611	`uint32_t lpn, uint32_t type)`	1608	`uint32_t lpn, uint32_t type)`
1612	`{`	1609	`{`
1613	`uint32_t ppb = ftl_nand_type->pagesperblock * ftl_banks;`	-
1614	`uint32_t rc = ftl_vfl_read(source, ftl_copybuffer[0],`	1610	`uint32_t rc = ftl_vfl_read(source, ftl_copybuffer[0],`
1615	`&ftl_copyspare[0], 1, 1) & 0x11F;`	1611	`&ftl_copyspare[0], 1, 1) & 0x11F;`
1616	`memset(&ftl_copyspare[0], 0xFF, 0x40);`	1612	`memset(&ftl_copyspare[0], 0xFF, 0x40);`
1617	`ftl_copyspare[0].user.lpn = lpn;`	1613	`ftl_copyspare[0].user.lpn = lpn;`
1618	`ftl_copyspare[0].user.usn = ++ftl_cxt.nextblockusn;`	1614	`ftl_copyspare[0].user.usn = ++ftl_cxt.nextblockusn;`
Line 1629...	Line 1625...
1629	`#ifndef FTL_READONLY`	1625	`#ifndef FTL_READONLY`
1630	`/* Copies a pBlock to a vBlock */`	1626	`/* Copies a pBlock to a vBlock */`
1631	`static uint32_t ftl_copy_block(uint32_t source, uint32_t destination)`	1627	`static uint32_t ftl_copy_block(uint32_t source, uint32_t destination)`
1632	`{`	1628	`{`
1633	`uint32_t i, j;`	1629	`uint32_t i, j;`
1634	`uint32_t ppb = ftl_nand_type->pagesperblock * ftl_banks;`	-
1635	`uint32_t error = 0;`	1630	`uint32_t error = 0;`
1636	`ftl_cxt.nextblockusn++;`	1631	`ftl_cxt.nextblockusn++;`
1637	`for (i = 0; i < ppb; i += FTL_COPYBUF_SIZE)`	1632	`for (i = 0; i < ppb; i += FTL_COPYBUF_SIZE)`
1638	`{`	1633	`{`
1639	`uint32_t rc = ftl_read(source * ppb + i,`	1634	`uint32_t rc = ftl_read(source * ppb + i,`
Line 1688...	Line 1683...
1688	`removed because it is full, but less than half of the pages in there are`	1683	`removed because it is full, but less than half of the pages in there are`
1689	`still in use and rest is just filled with old crap. */`	1684	`still in use and rest is just filled with old crap. */`
1690	`static uint32_t ftl_compact_scattered(struct ftl_log_type* entry)`	1685	`static uint32_t ftl_compact_scattered(struct ftl_log_type* entry)`
1691	`{`	1686	`{`
1692	`uint32_t i, j;`	1687	`uint32_t i, j;`
1693	`uint32_t ppb = ftl_nand_type->pagesperblock * ftl_banks;`	-
1694	`uint32_t error;`	1688	`uint32_t error;`
1695	`struct ftl_log_type backup;`	1689	`struct ftl_log_type backup;`
1696	`if (entry->pagescurrent == 0)`	1690	`if (entry->pagescurrent == 0)`
1697	`{`	1691	`{`
1698	`ftl_release_pool_block(entry->scatteredvblock);`	1692	`ftl_release_pool_block(entry->scatteredvblock);`
Line 1772...	Line 1766...
1772	`committing it without needing to copy it again.`	1766	`committing it without needing to copy it again.`
1773	`If this fails for whichever reason, it will be committed the usual way. */`	1767	`If this fails for whichever reason, it will be committed the usual way. */`
1774	`static uint32_t ftl_commit_sequential(struct ftl_log_type* entry)`	1768	`static uint32_t ftl_commit_sequential(struct ftl_log_type* entry)`
1775	`{`	1769	`{`
1776	`uint32_t i;`	1770	`uint32_t i;`
1777	`uint32_t ppb = ftl_nand_type->pagesperblock * ftl_banks;`	-
1778		1771
1779	`if (entry->issequential != 1`	1772	`if (entry->issequential != 1`
1780	`\|\| entry->pagescurrent != entry->pagesused)`	1773	`\|\| entry->pagescurrent != entry->pagesused)`
1781	`return 1;`	1774	`return 1;`
1782		1775
Line 1818...	Line 1811...
1818	`whatever way seems most appropriate. Else, the oldest scattered page block`	1811	`whatever way seems most appropriate. Else, the oldest scattered page block`
1819	`will be freed by committing it. */`	1812	`will be freed by committing it. */`
1820	`static uint32_t ftl_remove_scattered_block(struct ftl_log_type* entry)`	1813	`static uint32_t ftl_remove_scattered_block(struct ftl_log_type* entry)`
1821	`{`	1814	`{`
1822	`uint32_t i;`	1815	`uint32_t i;`
1823	`uint32_t ppb = ftl_nand_type->pagesperblock * ftl_banks;`	-
1824	`uint32_t age = 0xFFFFFFFF, used = 0;`	1816	`uint32_t age = 0xFFFFFFFF, used = 0;`
1825	`if (entry == NULL)`	1817	`if (entry == NULL)`
1826	`{`	1818	`{`
1827	`for (i = 0; i < 0x11; i++)`	1819	`for (i = 0; i < 0x11; i++)`
1828	`{`	1820	`{`
Line 1915...	Line 1907...
1915	`#ifndef FTL_READONLY`	1907	`#ifndef FTL_READONLY`
1916	`/* Commits the FTL block map, erase counters, and context to flash */`	1908	`/* Commits the FTL block map, erase counters, and context to flash */`
1917	`static uint32_t ftl_commit_cxt(void)`	1909	`static uint32_t ftl_commit_cxt(void)`
1918	`{`	1910	`{`
1919	`uint32_t i;`	1911	`uint32_t i;`
1920	`uint32_t ppb = ftl_nand_type->pagesperblock * ftl_banks;`	-
1921	`uint32_t mappages = (ftl_nand_type->userblocks + 0x3ff) >> 10;`	1912	`uint32_t mappages = (ftl_nand_type->userblocks + 0x3ff) >> 10;`
1922	`uint32_t ctrpages = (ftl_nand_type->userblocks + 23 + 0x3ff) >> 10;`	1913	`uint32_t ctrpages = (ftl_nand_type->userblocks + 23 + 0x3ff) >> 10;`
1923	`uint32_t endpage = ftl_cxt.ftlctrlpage + mappages + ctrpages + 1;`	1914	`uint32_t endpage = ftl_cxt.ftlctrlpage + mappages + ctrpages + 1;`
1924	`DEBUGF("FTL: Committing context");`	1915	`DEBUGF("FTL: Committing context");`
1925	`if (endpage >= (ftl_cxt.ftlctrlpage / ppb + 1) * ppb)`	1916	`if (endpage >= (ftl_cxt.ftlctrlpage / ppb + 1) * ppb)`
Line 2000...	Line 1991...
2000	`#ifndef FTL_READONLY`	1991	`#ifndef FTL_READONLY`
2001	`/* Exposed function: Write highlevel sectors */`	1992	`/* Exposed function: Write highlevel sectors */`
2002	`uint32_t ftl_write(uint32_t sector, uint32_t count, const void* buffer)`	1993	`uint32_t ftl_write(uint32_t sector, uint32_t count, const void* buffer)`
2003	`{`	1994	`{`
2004	`uint32_t i, j, k;`	1995	`uint32_t i, j, k;`
2005	`uint32_t ppb = ftl_nand_type->pagesperblock * ftl_banks;`	-
2006		1996
2007	`if (!ftl_initialized) return -1;`	1997	`if (!ftl_initialized) return -1;`
2008		1998
2009	`#ifdef FTL_TRACE`	1999	`#ifdef FTL_TRACE`
2010	`DEBUGF("FTL: Writing %d sectors starting at %d", count, sector);`	2000	`DEBUGF("FTL: Writing %d sectors starting at %d", count, sector);`
Line 2195...	Line 2185...
2195	`distributes wear, and commits the FTL context. */`	2185	`distributes wear, and commits the FTL context. */`
2196	`uint32_t ftl_sync(void)`	2186	`uint32_t ftl_sync(void)`
2197	`{`	2187	`{`
2198	`uint32_t i;`	2188	`uint32_t i;`
2199	`uint32_t rc = 0;`	2189	`uint32_t rc = 0;`
2200	`uint32_t ppb = ftl_nand_type->pagesperblock * ftl_banks;`	-
2201		-
2202	`if (!ftl_initialized) return 0;`	2190	`if (!ftl_initialized) return 0;`
2203		2191
2204	`if (ftl_cxt.clean_flag == 1) return 0;`	2192	`if (ftl_cxt.clean_flag == 1) return 0;`
2205		2193
2206	`mutex_lock(&ftl_mtx, TIMEOUT_BLOCK);`	2194	`mutex_lock(&ftl_mtx, TIMEOUT_BLOCK);`
Line 2589...	Line 2577...
2589	`panicf(PANIC_KILLTHREAD, "FTL: Lowlevel NAND driver init failed: %d", rc);`	2577	`panicf(PANIC_KILLTHREAD, "FTL: Lowlevel NAND driver init failed: %d", rc);`
2590	`ftl_banks = 0;`	2578	`ftl_banks = 0;`
2591	`for (i = 0; i < 4; i++)`	2579	`for (i = 0; i < 4; i++)`
2592	`if (nand_get_device_type(i) != 0) ftl_banks = i + 1;`	2580	`if (nand_get_device_type(i) != 0) ftl_banks = i + 1;`
2593	`ftl_nand_type = nand_get_device_type(0);`	2581	`ftl_nand_type = nand_get_device_type(0);`
-		2582	`ftl_banks_exponent = ftl_banks == 4 ? 2 : ftl_banks == 2 ? 1 : 0;`
-		2583	`ppb_exponent = ftl_nand_type->blocksizeexponent + ftl_banks_exponent;`
-		2584	`ppb = (1 << ppb_exponent);`
-		2585	`syshyperblocks = ftl_nand_type->blocks - ftl_nand_type->userblocks - 0x17;`
2594		2586
2595	`if (!ftl_has_devinfo())`	2587	`if (!ftl_has_devinfo())`
2596	`{`	2588	`{`
2597	`DEBUGF("FTL: No DEVICEINFO found!");`	2589	`DEBUGF("FTL: No DEVICEINFO found!");`
2598	`return -1;`	2590	`return -1;`

Subversion Repositories freemyipod

(root)/embios/trunk/target/ipodnano2g/ftl.c @ 258 – Rev 249 → 251