[PATCH] [MTD] [NAND] pxa3xx_nand: enable PXA3xx bad block manageme=

Mon Aug 24 09:56:15 EDT 2009

nt There&#39;s a custom bad block management in PXA3xx series. <b=
r>This BBM needs to allocate a reserved area at the bottom of NAND chip.<br=
>
The reserved area should be protected from normal usage. The first block<br=
>of NAND is also reserved in order to storing the relocation information.<b=
r> When NAND controller finds a bad block, it marks the block as bad and=
 
allocate a unused block from reserved area in bottom. The new block is u=
sed to replace the original bad one. From OS view, there&#39;s no bad block=
 at the time. It&#39;s handled by NAND driver. Then driver records the r=
eplacement 
in the first block. The reserved area is also called as relocation a=
rea. It occupies 2% of the whole NAND space. Signed-off-by: Haoji=
an Zhuang &lt;<a href=3D"mailto:haojian.zhuang at marvell.com">haojian.zhuang@=
marvell.com</a>&gt; 
--- =A0arch/arm/plat-pxa/include/plat/pxa3xx_bbm.h |=A0=A0 62 ++++ =
=A0drivers/mtd/Kconfig=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0 |=A0=A0=A0 6 + =A0drivers/mtd/Makefile=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 |=A0=A0=A0 1 +<br=
>=A0drivers/mtd/nand/pxa3xx_nand.c=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 |=
=A0 124 ++++++++ 
=A0drivers/mtd/pxa3xx_bbm.c=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=
=A0=A0=A0 |=A0 427 +++++++++++++++++++++++++++ =A05 files changed, 620 i=
nsertions(+), 0 deletions(-) =A0create mode 100644 arch/arm/plat-pxa/inc=
lude/plat/pxa3xx_bbm.h =A0create mode 100644 drivers/mtd/pxa3xx_bbm.c<br=
>
 diff --git a/arch/arm/plat-pxa/include/plat/pxa3xx_bbm.h b/arch/arm/pla=
t-pxa/include/plat/pxa3xx_bbm.h new file mode 100644 index 0000000..8=
508547 --- /dev/null +++ b/arch/arm/plat-pxa/include/plat/pxa3xx_bbm.=
h 
@@ -0,0 +1,62 @@ +#ifndef=A0=A0=A0 __PXA3XX_BBT_H__ +#define=A0=A0=A0=
 __PXA3XX_BBT_H__ + +#include &lt;linux/types.h&gt; + +#define =
PXA_RLTABLE_HEADER=A0=A0=A0 =A0=A0=A0 (0x524e) +#define PXA_MAX_RLENTRY=
=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 (127) 
+#define PXA_MAX_SLOT=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 (40) +#define PXA_BEG=
IN_SLOT=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 (2) +#define PXA_BBM_MAGIC=A0=A0=A0=
 =A0=A0=A0 =A0=A0=A0 (0x4c56524d)=A0=A0=A0 /* MRVL */ + +enum { +=
=A0=A0=A0 PXA3xx_BBM_NAND =3D 0, +=A0=A0=A0 PXA3xx_BBM_ONENAND, +=A0=
=A0=A0 PXA3xx_BBM_INVALID =3D -1, 
+}; + +struct relocate_entry { +=A0=A0=A0 unsigned short from; =
+=A0=A0=A0 unsigned short to; +}; + +struct relocate_table { +=
=A0=A0=A0 unsigned short header; +=A0=A0=A0 unsigned short total; +};=
 + +struct pxa3xx_bbm { 
+=A0=A0=A0 int=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 magic; +=A0=A0=A0 /* +=A0=
=A0=A0 =A0* NOTES: this field impact the partition table. Please make sure<=
br>+=A0=A0=A0 =A0* that this value align with partitions definition. +=
=A0=A0=A0 =A0*/ +=A0=A0=A0 int=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 max_relocate=
_entry; 
+=A0=A0=A0 int=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 max_slots; +=A0=A0=A0 int=A0=
=A0=A0 =A0=A0=A0 =A0=A0=A0 current_slot; + +=A0=A0=A0 void=A0=A0=A0 =
=A0=A0=A0 =A0=A0=A0 *data_buf; + +=A0=A0=A0 /* +=A0=A0=A0 =A0* The=
se two fields should be in (one)nand_chip. Add here to handle +=A0=A0=A0=
 =A0* onenand_chip and nand_chip at the same time. 
+=A0=A0=A0 =A0*/ +=A0=A0=A0 int=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 page_shift;=
 +=A0=A0=A0 int=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 erase_shift; + +=A0=
=A0=A0 struct relocate_table=A0=A0=A0 *table; +=A0=A0=A0 struct relocate=
_entry=A0=A0=A0 *entry; + +=A0=A0=A0 void=A0=A0=A0 (*uninit)(struct m=
td_info *mtd); 
+=A0=A0=A0 loff_t=A0=A0=A0 (*search)(struct mtd_info *mtd,=A0=A0=A0 loff_t =
ofs); +=A0=A0=A0 int=A0=A0=A0 (*block_markbad)(struct mtd_info *mtd, int=
 block); +=A0=A0=A0 int=A0=A0=A0 (*scan_bbt)(struct mtd_info *mtd); +=
}; + +extern int verify_nand_bbm(struct mtd_info *mtd, struct pxa3xx_=
bbm **bbm); 
+extern int verify_onenand_bbm(struct mtd_info *mtd, struct pxa3xx_bbm **bb=
m); +extern int nand_badblockpos(struct mtd_info *mtd); +extern int o=
nenand_badblockpos(struct mtd_info *mtd); +extern struct pxa3xx_bbm *pxa=
3xx_query_bbm(void); 
+#endif + diff --git a/drivers/mtd/Kconfig b/drivers/mtd/Kconfig i=
ndex b8e35a0..3cdf7bf 100644 --- a/drivers/mtd/Kconfig +++ b/drivers/=
mtd/Kconfig @@ -315,6 +315,12 @@ config MTD_OOPS =A0=A0=A0=A0 =A0 To =
use, add console=3DttyMTDx to the kernel command line, 
=A0=A0=A0=A0 =A0 where x is the MTD device number to use. =A0 +config=
 PXA3xx_BBM +=A0=A0=A0 bool &quot;Marvell PXA3xx Bad Block Management&qu=
ot; +=A0=A0=A0 depends on MTD &amp;&amp; (MTD_NAND || MTD_ONENAND) +=
=A0=A0=A0 help +=A0=A0=A0 =A0 This enables Marvell Bad block management =
on NAND/ONENAND on PXA3xx. 
+ =A0source &quot;drivers/mtd/chips/Kconfig&quot; =A0 =A0source &q=
uot;drivers/mtd/maps/Kconfig&quot; diff --git a/drivers/mtd/Makefile b/d=
rivers/mtd/Makefile index 82d1e4d..e637fa0 100644 --- a/drivers/mtd/M=
akefile 
+++ b/drivers/mtd/Makefile @@ -25,6 +25,7 @@ obj-$(CONFIG_INFTL)=A0=A0=
=A0 =A0=A0=A0 +=3D inftl.o =A0obj-$(CONFIG_RFD_FTL)=A0=A0=A0 =A0=A0=A0 +=
=3D rfd_ftl.o =A0obj-$(CONFIG_SSFDC)=A0=A0=A0 =A0=A0=A0 +=3D ssfdc.o =
=A0obj-$(CONFIG_MTD_OOPS)=A0=A0=A0 =A0=A0=A0 +=3D mtdoops.o 
+obj-$(CONFIG_PXA3xx_BBM)=A0=A0=A0 +=3D pxa3xx_bbm.o =A0 =A0nftl-objs=
=A0=A0=A0 =A0=A0=A0 :=3D nftlcore.o nftlmount.o =A0inftl-objs=A0=A0=A0 =
=A0=A0=A0 :=3D inftlcore.o inftlmount.o diff --git a/drivers/mtd/nand/px=
a3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c 
index 134bfbc..d6c9524 100644 --- a/drivers/mtd/nand/pxa3xx_nand.c ++=
+ b/drivers/mtd/nand/pxa3xx_nand.c @@ -24,6 +24,10 @@ =A0#include &lt=
;mach/dma.h&gt; =A0#include &lt;plat/pxa3xx_nand.h&gt; =A0 +#ifdef=
 CONFIG_PXA3xx_BBM 
+#include &lt;plat/pxa3xx_bbm.h&gt; +#endif + =A0#define=A0=A0=A0 =
CHIP_DELAY_TIMEOUT=A0=A0=A0 (2 * HZ/10) =A0 =A0/* registers and bit d=
efinitions */ @@ -112,6 +116,14 @@ enum { =A0 =A0struct pxa3xx_nan=
d_info { =A0=A0=A0=A0 struct nand_chip=A0=A0=A0 nand_chip; 
+#ifdef CONFIG_PXA3xx_BBM +=A0=A0=A0 /* +=A0=A0=A0 =A0* Restriction: =
nand_chip should be the first one of pxa3xx_nand_info. +=A0=A0=A0 =A0* b=
bm should be the second one of pxa3xx_nand_info. +=A0=A0=A0 =A0* Marvell=
 PXA3xx BBM always access this field to get bbm. 
+=A0=A0=A0 =A0*/ +=A0=A0=A0 struct pxa3xx_bbm=A0=A0=A0 *bbm; +#endif<=
br>=A0 =A0=A0=A0=A0 struct platform_device=A0=A0=A0 =A0*pdev; =A0=A0=
=A0=A0 const struct pxa3xx_nand_flash *flash_info; @@ -365,6 +377,8 @@ s=
tatic struct pxa3xx_nand_flash *builtin_flash_types[] =3D { 
=A0/* convert nand flash controller clock cycles to nano-seconds */ =A0#=
define cycle2ns(c, clk)=A0=A0=A0 ((((c) + 1) * 1000000 + clk / 500) / (clk =
/ 1000)) =A0 +static int pxa3xx_nand_relocate_addr(struct mtd_info *m=
td, int page_addr); 
+ =A0static void pxa3xx_nand_set_timing(struct pxa3xx_nand_info *info,<b=
r>=A0=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 =A0=A0=A0 =A0=A0 const struct pxa3xx_nan=
d_timing *t) =A0{ @@ -706,6 +720,8 @@ static void pxa3xx_nand_cmdfunc=
(struct mtd_info *mtd, unsigned command, 
=A0 =A0=A0=A0=A0 init_completion(&amp;info-&gt;cmd_complete); =A0 =
+=A0=A0=A0 page_addr =3D pxa3xx_nand_relocate_addr(mtd, page_addr); +<br=
>=A0=A0=A0=A0 switch (command) { =A0=A0=A0=A0 case NAND_CMD_READOOB: =
=A0=A0=A0=A0 =A0=A0=A0 /* disable HW ECC to get all the OOB data */ 
@@ -1165,6 +1181,113 @@ static struct nand_ecclayout hw_largepage_ecclayout=
 =3D { =A0=A0=A0=A0 .oobfree =3D { {2, 38} } =A0}; =A0 +#ifdef =
CONFIG_PXA3xx_BBM +int verify_nand_bbm(struct mtd_info *mtd, struct pxa3=
xx_bbm **bbm) 
+{ +=A0=A0=A0 struct nand_chip *info =3D mtd-&gt;priv; +=A0=A0=A0 str=
uct pxa3xx_bbm **nbbm =3D NULL; + +=A0=A0=A0 /* check whether current=
 flash is nand */ +=A0=A0=A0 nbbm =3D (struct pxa3xx_bbm **)(++info);<br=
>+=A0=A0=A0 if (((unsigned int)nbbm &lt; PAGE_OFFSET) 
+=A0=A0=A0 =A0=A0=A0 || ((unsigned int)*nbbm &lt; PAGE_OFFSET)) +=A0=A0=
=A0 =A0=A0=A0 return PXA3xx_BBM_INVALID; + +=A0=A0=A0 if ((*nbbm)-&gt=
;magic =3D=3D PXA_BBM_MAGIC) { +=A0=A0=A0 =A0=A0=A0 pr_debug(&quot;%s:Fo=
und Nand flash.\n&quot;, __func__); +=A0=A0=A0 =A0=A0=A0 *bbm =3D *nbbm;=
 
+=A0=A0=A0 =A0=A0=A0 return PXA3xx_BBM_NAND; +=A0=A0=A0 } +=A0=A0=A0 =
return PXA3xx_BBM_INVALID; +} + +static int pxa3xx_nand_relocate_a=
ddr(struct mtd_info *mtd, int page_addr) +{ +=A0=A0=A0 struct pxa3xx_=
nand_info *info =3D mtd-&gt;priv; 
+=A0=A0=A0 struct pxa3xx_bbm *bbm =3D info-&gt;bbm; +=A0=A0=A0 loff_t ad=
dr; +=A0=A0=A0 int ret; + +=A0=A0=A0 addr =3D page_addr &lt;&lt; b=
bm-&gt;page_shift; +=A0=A0=A0 addr =3D bbm-&gt;search(mtd, addr); +=
=A0=A0=A0 ret =3D addr &gt;&gt; bbm-&gt;page_shift; 
+=A0=A0=A0 return ret; +} + +static int pxa3xx_nand_block_markbad(=
struct mtd_info *mtd, loff_t ofs) +{ +=A0=A0=A0 struct pxa3xx_nand_in=
fo *info =3D mtd-&gt;priv; +=A0=A0=A0 struct pxa3xx_bbm *bbm =3D info-&g=
t;bbm; +=A0=A0=A0 struct nand_chip *chip =3D mtd-&gt;priv; 
+=A0=A0=A0 uint8_t buf[2] =3D { 0, 0 }; +=A0=A0=A0 int block, ret; +<=
br>+=A0=A0=A0 /* Get block number */ +=A0=A0=A0 block =3D (int)(ofs &gt;=
&gt; chip-&gt;bbt_erase_shift); + +=A0=A0=A0 /* We write two bytes, s=
o we dont have to mess with 16 bit 
+=A0=A0=A0 =A0* access +=A0=A0=A0 =A0*/ +=A0=A0=A0 ofs +=3D mtd-&gt;o=
obsize; +=A0=A0=A0 chip-&gt;ops.len =3D chip-&gt;ops.ooblen =3D 2; +=
=A0=A0=A0 chip-&gt;ops.datbuf =3D NULL; +=A0=A0=A0 chip-&gt;ops.oobbuf =
=3D buf; +=A0=A0=A0 chip-&gt;ops.ooboffs =3D chip-&gt;badblockpos &amp; =
~0x01; 
+ +=A0=A0=A0 ret =3D mtd-&gt;write_oob(mtd, ofs, &amp;chip-&gt;ops); =
+ +=A0=A0=A0 if (!ret) +=A0=A0=A0 =A0=A0=A0 mtd-&gt;ecc_stats.badbloc=
ks++; + +=A0=A0=A0 return bbm-&gt;block_markbad(mtd, block); +}<br=
>+ +static void pxa3xx_nand_init_mtd(struct mtd_info *mtd, 
+=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 =A0=A0=A0 =A0struct pxa3xx_nand_info *info)<=
br>+{ +=A0=A0=A0 const struct pxa3xx_nand_flash *f =3D info-&gt;flash_in=
fo; +=A0=A0=A0 struct nand_chip *this =3D &amp;info-&gt;nand_chip; +=
=A0=A0=A0 struct pxa3xx_bbm *bbm =3D NULL; + 
+=A0=A0=A0 this-&gt;options =3D (f-&gt;flash_width =3D=3D 16) ? NAND_BUSWID=
TH_16: 0; + +=A0=A0=A0 this-&gt;waitfunc=A0=A0=A0 =A0=A0=A0 =3D pxa3x=
x_nand_waitfunc; +=A0=A0=A0 this-&gt;select_chip=A0=A0=A0 =3D pxa3xx_nan=
d_select_chip; +=A0=A0=A0 this-&gt;dev_ready=A0=A0=A0 =A0=A0=A0 =3D pxa3=
xx_nand_dev_ready; 
+=A0=A0=A0 this-&gt;cmdfunc=A0=A0=A0 =A0=A0=A0 =3D pxa3xx_nand_cmdfunc; =
+=A0=A0=A0 this-&gt;read_word=A0=A0=A0 =A0=A0=A0 =3D pxa3xx_nand_read_word;=
 +=A0=A0=A0 this-&gt;read_byte=A0=A0=A0 =A0=A0=A0 =3D pxa3xx_nand_read_b=
yte; +=A0=A0=A0 this-&gt;read_buf=A0=A0=A0 =A0=A0=A0 =3D pxa3xx_nand_rea=
d_buf; 
+=A0=A0=A0 this-&gt;write_buf=A0=A0=A0 =A0=A0=A0 =3D pxa3xx_nand_write_buf;=
 +=A0=A0=A0 this-&gt;verify_buf=A0=A0=A0 =3D pxa3xx_nand_verify_buf; =
+ +=A0=A0=A0 this-&gt;ecc.mode=A0=A0=A0 =A0=A0=A0 =3D NAND_ECC_HW; +=
=A0=A0=A0 this-&gt;ecc.hwctl=A0=A0=A0 =A0=A0=A0 =3D pxa3xx_nand_ecc_hwctl;<=
br>
+=A0=A0=A0 this-&gt;ecc.calculate=A0=A0=A0 =3D pxa3xx_nand_ecc_calculate;<b=
r>+=A0=A0=A0 this-&gt;ecc.correct=A0=A0=A0 =3D pxa3xx_nand_ecc_correct; =
+=A0=A0=A0 this-&gt;ecc.size=A0=A0=A0 =A0=A0=A0 =3D f-&gt;page_size; +<b=
r>+=A0=A0=A0 if (f-&gt;page_size =3D=3D 2048) +=A0=A0=A0 =A0=A0=A0 this-=
&gt;ecc.layout =3D &amp;hw_largepage_ecclayout; 
+=A0=A0=A0 else +=A0=A0=A0 =A0=A0=A0 this-&gt;ecc.layout =3D &amp;hw_sma=
llpage_ecclayout; + +=A0=A0=A0 this-&gt;chip_delay =3D 25; + +=
=A0=A0=A0 bbm =3D pxa3xx_query_bbm(); +=A0=A0=A0 if (bbm) { +=A0=A0=
=A0 =A0=A0=A0 /* Marvell PXA3xx BBM is initialized successfully */ 
+=A0=A0=A0 =A0=A0=A0 info-&gt;bbm =3D bbm; +=A0=A0=A0 =A0=A0=A0 this-&gt=
;scan_bbt =3D bbm-&gt;scan_bbt; +=A0=A0=A0 =A0=A0=A0 this-&gt;block_mark=
bad =3D pxa3xx_nand_block_markbad; +=A0=A0=A0 } +} +#else +stat=
ic int pxa3xx_nand_relocate_addr(struct mtd_info *mtd, int page_addr) 
+{ +=A0=A0=A0 return page_addr; +} + =A0static void pxa3xx_nand=
_init_mtd(struct mtd_info *mtd, =A0=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 =A0=A0=
=A0 =A0struct pxa3xx_nand_info *info) =A0{ @@ -1196,6 +1319,7 @@ stat=
ic void pxa3xx_nand_init_mtd(struct mtd_info *mtd, 
=A0 =A0=A0=A0=A0 this-&gt;chip_delay =3D 25; =A0} +#endif =A0<b=
r>=A0static int pxa3xx_nand_probe(struct platform_device *pdev) =A0{ =

diff --git a/drivers/mtd/pxa3xx_bbm.c b/drivers/mtd/pxa3xx_bbm.c<br>new fil=
e mode 100644<br>
index 0000000..bcc9a35<br>--- /dev/null<br>+++ b/drivers/mtd/pxa3xx_bbm.c<b=
r>@@ -0,0 +1,427 @@<br>+/*<br>+ * linux/drivers/mtd/pxa3xx_bbm.c<br>+ *<br>=
+ * Support bad block management on PXA3xx.<br>+ * Copyright (C) 2007 Marve=
ll International Ltd.<br>
+ *<br>+ * Haojian Zhuang &lt;<a href=3D"mailto:haojian.zhuang at marvell.com"=
>haojian.zhuang at marvell.com</a>&gt;<br>+ *<br>+ * This program is free soft=
ware; you can redistribute it and/or modify<br>+ * it under the terms of th=
e GNU General Public License version 2 as<br>
+ * published by the Free Software Foundation.<br>+ *<br>+ */<br>+<br>+#inc=
lude &lt;linux/mtd/mtd.h&gt;<br>+#include &lt;linux/mtd/nand.h&gt;<br>+#inc=
lude &lt;plat/pxa3xx_bbm.h&gt;<br>+#include &lt;asm/errno.h&gt;<br>+<br>
+static struct pxa3xx_bbm *pxa3xx_bbm =3D NULL;<br>+<br>+/*<br>+ * bbm shou=
ld be the next field of nand_chip or onenand_chip.<br>+ */<br>+static int v=
erify_bbm_magic(struct mtd_info *mtd, struct pxa3xx_bbm **bbm)<br>+{<br>+=
=A0=A0=A0 int ret;<br>
+<br>+=A0=A0=A0 ret =3D verify_nand_bbm(mtd, bbm);<br>+=A0=A0=A0 return ret=
;<br>+}<br>+<br>+static void dump_rltable(struct pxa3xx_bbm *bbm)<br>+{<br>=
+=A0=A0=A0 int i;<br>+<br>+=A0=A0=A0 if (bbm-&gt;table-&gt;total =3D=3D 0) =
{<br>+=A0=A0=A0 =A0=A0=A0 pr_info(&quot;The relocation table is empty now\n=
&quot;);<br>
+=A0=A0=A0 =A0=A0=A0 return;<br>+=A0=A0=A0 }<br>+=A0=A0=A0 for (i =3D 0; i =
&lt; bbm-&gt;table-&gt;total; i++) {<br>+=A0=A0=A0 =A0=A0=A0 if (bbm-&gt;en=
try[i].from =3D=3D (unsigned short)(-1))<br>+=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 =
continue;<br>+=A0=A0=A0 =A0=A0=A0 if (bbm-&gt;entry[i].to =3D=3D (unsigned =
short)(-1))<br>
+=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 pr_info(&quot;(%4d): block #%d is bad in rel=
ocation area\n&quot;,<br>+=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 =A0=A0=A0 i, bbm-&g=
t;entry[i].from);<br>+=A0=A0=A0 =A0=A0=A0 else<br>+=A0=A0=A0 =A0=A0=A0 =A0=
=A0=A0 pr_info(&quot;(%4d): block #%d is relocated to #%d\n&quot;,<br>
+=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 =A0=A0=A0 i, bbm-&gt;entry[i].from, bbm-&gt;=
entry[i].to);<br>+=A0=A0=A0 }<br>+}<br>+<br>+/* Initialize the relocation t=
able */<br>+static int pxa3xx_init_rltable(struct mtd_info *mtd)<br>+{<br>+=
=A0=A0=A0 struct pxa3xx_bbm *bbm =3D NULL;<br>
+=A0=A0=A0 int size =3D mtd-&gt;writesize + mtd-&gt;oobsize;<br>+=A0=A0=A0 =
int pages, entries;<br>+<br>+=A0=A0=A0 if (verify_bbm_magic(mtd, &amp;bbm) =
&lt; 0) {<br>+=A0=A0=A0 =A0=A0=A0 /* BBM don&#39;t support this type of fla=
sh */<br>+=A0=A0=A0 =A0=A0=A0 return -EINVAL;<br>
+=A0=A0=A0 }<br>+<br>+=A0=A0=A0 bbm-&gt;page_shift =3D ffs(mtd-&gt;writesiz=
e) - 1;<br>+=A0=A0=A0 bbm-&gt;erase_shift =3D ffs(mtd-&gt;erasesize) - 1;<b=
r>+<br>+=A0=A0=A0 pages =3D mtd-&gt;erasesize &gt;&gt; bbm-&gt;page_shift;<=
br>+<br>+=A0=A0=A0 entries =3D mtd-&gt;size &gt;&gt; bbm-&gt;erase_shift;<b=
r>
+=A0=A0=A0 entries =3D (entries * 2) / 100;<br>+=A0=A0=A0 if (mtd-&gt;write=
size =3D=3D 512)<br>+=A0=A0=A0 =A0=A0=A0 entries =3D (entries &lt; PXA_MAX_=
RLENTRY) ? entries<br>+=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 =A0 : PXA_MAX_RLENTRY;=
<br>+<br>+=A0=A0=A0 bbm-&gt;max_slots=A0=A0=A0 =3D PXA_MAX_SLOT;<br>
+=A0=A0=A0 bbm-&gt;max_relocate_entry =3D entries;<br>+=A0=A0=A0 bbm-&gt;cu=
rrent_slot =3D -1;<br>+<br>+=A0=A0=A0 bbm-&gt;data_buf =3D kzalloc(size, GF=
P_KERNEL);<br>+=A0=A0=A0 if (bbm-&gt;data_buf =3D=3D NULL)<br>+=A0=A0=A0 =
=A0=A0=A0 return -ENOMEM;<br>+<br>+=A0=A0=A0 bbm-&gt;table =3D (struct relo=
cate_table *)bbm-&gt;data_buf;<br>
+=A0=A0=A0 memset(bbm-&gt;table, 0, sizeof(struct relocate_table));<br>+<br=
>+=A0=A0=A0 bbm-&gt;entry =3D (struct relocate_entry *)((uint8_t *)bbm-&gt;=
data_buf +<br>+=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 sizeof(struct relocate_entry))=
;<br>+=A0=A0=A0 memset(bbm-&gt;entry, 0, sizeof(struct relocate_entry)<br>
+=A0=A0=A0 =A0=A0=A0 * bbm-&gt;max_relocate_entry);<br>+<br>+=A0=A0=A0 retu=
rn 0;<br>+}<br>+<br>+/* Uninitialize the relocation table */<br>+static voi=
d pxa3xx_uninit_rltable(struct mtd_info *mtd)<br>+{<br>+=A0=A0=A0 struct px=
a3xx_bbm *bbm =3D NULL;<br>
+<br>+=A0=A0=A0 if (verify_bbm_magic(mtd, &amp;bbm) &lt; 0) {<br>+=A0=A0=A0=
 =A0=A0=A0 /* BBM don&#39;t support this flash type */<br>+=A0=A0=A0 =A0=A0=
=A0 return;<br>+=A0=A0=A0 }<br>+<br>+=A0=A0=A0 if (bbm) {<br>+=A0=A0=A0 =A0=
=A0=A0 kfree(bbm-&gt;data_buf);<br>+=A0=A0=A0 =A0=A0=A0 bbm =3D NULL;<br>
+=A0=A0=A0 }<br>+}<br>+<br>+/*<br>+ * Move larger data to left of pivot, an=
d move smaller data to right of<br>+ * pivot.<br>+ */<br>+static int partit=
ion(unsigned short *array, int left, int right, int pivot_idx)<br>+{<br>+=
=A0=A0=A0 int i, pivot, base_idx;<br>
+<br>+=A0=A0=A0 pivot =3D array[pivot_idx];<br>+=A0=A0=A0 swap(array[left],=
 array[right]);<br>+=A0=A0=A0 base_idx =3D left;<br>+<br>+=A0=A0=A0 for (i =
=3D left; i &lt; right; i++) {<br>+=A0=A0=A0 =A0=A0=A0 if (array[i] &gt; pi=
vot) {<br>+=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 swap(array[i], array[base_idx]);<b=
r>
+=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 base_idx++;<br>+=A0=A0=A0 =A0=A0=A0 }<br>+=
=A0=A0=A0 }<br>+=A0=A0=A0 if (base_idx &lt; right)<br>+=A0=A0=A0 =A0=A0=A0 =
swap(array[base_idx], array[right]);<br>+=A0=A0=A0 return base_idx;<br>+}<b=
r>+<br>+static int quick_sort(unsigned short *array, int left, int right)<b=
r>
+{<br>+=A0=A0=A0 int pivot_idx, new_idx;<br>+=A0=A0=A0 if (right &gt; left)=
 {<br>+=A0=A0=A0 =A0=A0=A0 pivot_idx =3D left;<br>+=A0=A0=A0 =A0=A0=A0 new_=
idx =3D partition(array, left, right, pivot_idx);<br>+=A0=A0=A0 =A0=A0=A0 q=
uick_sort(array, left, new_idx - 1);<br>+=A0=A0=A0 =A0=A0=A0 quick_sort(arr=
ay, new_idx + 1, right);<br>
+=A0=A0=A0 }<br>+=A0=A0=A0 return 0;<br>+}<br>+<br>+/*<br>+ * Add the reloc=
ation entry into the relocation table. If the relocated block<br>+ * is bad=
, an new entry will be added into the bottom of the relocation table.<br>+ =
*/<br>+int update_rltable(struct mtd_info *mtd, int block)<br>
+{<br>+=A0=A0=A0 struct pxa3xx_bbm *bbm =3D NULL;<br>+=A0=A0=A0 struct relo=
cate_table *table =3D NULL;<br>+=A0=A0=A0 struct relocate_entry *entry =3D =
NULL;<br>+=A0=A0=A0 struct erase_info instr;<br>+=A0=A0=A0 unsigned short a=
rray[PXA_MAX_RLENTRY], addr;<br>
+=A0=A0=A0 int i, idx, ret, relocated_idx =3D -1;<br>+<br>+=A0=A0=A0 if (ve=
rify_bbm_magic(mtd, &amp;bbm) &lt; 0) {<br>+=A0=A0=A0 =A0=A0=A0 /* BBM don&=
#39;t support this type of flash */<br>+=A0=A0=A0 =A0=A0=A0 return -EINVAL;=
<br>+=A0=A0=A0 }<br>+<br>+=A0=A0=A0 table =3D bbm-&gt;table;<br>
+=A0=A0=A0 entry =3D bbm-&gt;entry;<br>+<br>+=A0=A0=A0 /* identify whether =
the block has been relocated */<br>+=A0=A0=A0 for (i =3D 0; i &lt; table-&g=
t;total; i++) {<br>+=A0=A0=A0 =A0=A0=A0 if (entry[i].from =3D=3D (unsigned =
short)(-1))<br>+=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 continue;<br>
+=A0=A0=A0 =A0=A0=A0 if (block =3D=3D entry[i].from) {<br>+=A0=A0=A0 =A0=A0=
=A0 =A0=A0=A0 relocated_idx =3D i;<br>+=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 break;=
<br>+=A0=A0=A0 =A0=A0=A0 }<br>+=A0=A0=A0 }<br>+<br>+scan:<br>+=A0=A0=A0 if =
(table-&gt;total &gt; bbm-&gt;max_relocate_entry) {<br>+=A0=A0=A0 =A0=A0=A0=
 pr_warning(&quot;Relocation entries exceed max num. Can&#39;t relocate&quo=
t;);<br>
+=A0=A0=A0 =A0=A0=A0 pr_warning(&quot; block 0x%x\n&quot;, block);<br>+=A0=
=A0=A0 =A0=A0=A0 return -ENOSPC;<br>+=A0=A0=A0 }<br>+<br>+=A0=A0=A0 memset(=
array, 0, PXA_MAX_RLENTRY);<br>+=A0=A0=A0 /* Get all index of relocated blo=
cks */<br>+=A0=A0=A0 for (i =3D 0, idx =3D 0; i &lt; table-&gt;total; i++) =
{<br>
+=A0=A0=A0 =A0=A0=A0 array[idx] =3D (entry[i].to !=3D (unsigned short)(-1))=
 ? entry[i].to<br>+=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 =A0=A0=A0 : entry[i].from;=
<br>+=A0=A0=A0 =A0=A0=A0 idx++;<br>+=A0=A0=A0 }<br>+=A0=A0=A0 /* sort array=
 with descending order */<br>+=A0=A0=A0 quick_sort(array, 0, idx - 1);<br>
+=A0=A0=A0 /*<br>+=A0=A0=A0 =A0* find the available block with the largest =
number in reservered<br>+=A0=A0=A0 =A0* area<br>+=A0=A0=A0 =A0*/<br>+=A0=A0=
=A0 addr =3D (unsigned short)((mtd-&gt;size &gt;&gt; bbm-&gt;erase_shift) -=
 1);<br>+=A0=A0=A0 for (i =3D 0; i &lt; bbm-&gt;max_relocate_entry; i++, ad=
dr--) {<br>
+=A0=A0=A0 =A0=A0=A0 if (addr &lt; ((mtd-&gt;size &gt;&gt; bbm-&gt;erase_sh=
ift)<br>+=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 - bbm-&gt;max_relocate_entry)) {<br>=
+=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 pr_warning(&quot;Relocation area is already =
full!\n&quot;);<br>+=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 return -ENOSPC;<br>
+=A0=A0=A0 =A0=A0=A0 }<br>+=A0=A0=A0 =A0=A0=A0 if (array[i] &lt; addr) {<br=
>+=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 memset(&amp;instr, 0, sizeof(struct erase_i=
nfo));<br>+=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 instr.mtd =3D mtd;<br>+=A0=A0=A0 =
=A0=A0=A0 =A0=A0=A0 instr.addr =3D addr &lt;&lt; bbm-&gt;erase_shift;<br>+=
=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 instr.len =3D 1 &lt;&lt; bbm-&gt;erase_shift;=
<br>
+=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 ret =3D mtd-&gt;erase(mtd, &amp;instr);<br>+=
=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 if (ret =3D=3D 0) {<br>+=A0=A0=A0 =A0=A0=A0 =
=A0=A0=A0 =A0=A0=A0 /* fill the recorder into relocation table */<br>+=A0=
=A0=A0 =A0=A0=A0 =A0=A0=A0 =A0=A0=A0 if (relocated_idx =3D=3D -1) {<br>+=A0=
=A0=A0 =A0=A0=A0 =A0=A0=A0 =A0=A0=A0 =A0=A0=A0 /* new entry in relocation t=
able */<br>
+=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 =A0=A0=A0 =A0=A0=A0 entry[table-&gt;total].f=
rom =3D block;<br>+=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 =A0=A0=A0 =A0=A0=A0 entry[=
table-&gt;total].to =3D addr;<br>+=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 =A0=A0=A0 =
=A0=A0=A0 table-&gt;total++;<br>+=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 =A0=A0=A0 =
=A0=A0=A0 goto done;<br>+=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 =A0=A0=A0 } else {<b=
r>
+=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 =A0=A0=A0 =A0=A0=A0 /* update entry in reloc=
ation table */<br>+=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 =A0=A0=A0 =A0=A0=A0 entry[=
table-&gt;total].from<br>+=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 =A0=A0=A0 =A0=A0=A0=
 =A0=A0=A0 =3D entry[relocated_idx].to;<br>+=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 =
=A0=A0=A0 =A0=A0=A0 entry[table-&gt;total].to<br>+=A0=A0=A0 =A0=A0=A0 =A0=
=A0=A0 =A0=A0=A0 =A0=A0=A0 =A0=A0=A0 =3D (unsigned short)(-1);<br>
+=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 =A0=A0=A0 =A0=A0=A0 table-&gt;total++;<br>+=
=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 =A0=A0=A0 =A0=A0=A0 entry[relocated_idx].to =
=3D addr;<br>+=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 =A0=A0=A0 =A0=A0=A0 goto done;<=
br>+=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 =A0=A0=A0 }<br>+=A0=A0=A0 =A0=A0=A0 =A0=
=A0=A0 } else {<br>+=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 =A0=A0=A0 /* append new b=
ad entry */<br>
+=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 =A0=A0=A0 entry[table-&gt;total].from =3D ad=
dr;<br>+=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 =A0=A0=A0 entry[table-&gt;total].to =
=3D (unsigned short)(-1);<br>+=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 =A0=A0=A0 table=
-&gt;total++;<br>+=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 =A0=A0=A0 goto scan;<br>+=
=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 }<br>+=A0=A0=A0 =A0=A0=A0 }<br>
+=A0=A0=A0 }<br>+<br>+done:<br>+=A0=A0=A0 return 0;<br>+}<br>+<br>+/* Write=
 the relocation table back to device, if there&#39;s room. */<br>+static in=
t sync_rltable(struct mtd_info *mtd, int *idx)<br>+{<br>+=A0=A0=A0 struct p=
xa3xx_bbm *bbm =3D NULL;<br>
+=A0=A0=A0 unsigned char *tmp;<br>+=A0=A0=A0 size_t retlen;<br>+=A0=A0=A0 i=
nt len, pages;<br>+<br>+=A0=A0=A0 if (verify_bbm_magic(mtd, &amp;bbm) &lt; =
0) {<br>+=A0=A0=A0 =A0=A0=A0 /* BBM don&#39;t support this type of flash */=
<br>+=A0=A0=A0 =A0=A0=A0 return -EINVAL;<br>
+=A0=A0=A0 }<br>+<br>+=A0=A0=A0 pages =3D mtd-&gt;erasesize &gt;&gt; bbm-&g=
t;page_shift;<br>+=A0=A0=A0 if ((*idx &gt;=3D pages) || (*idx &lt;=3D (page=
s - bbm-&gt;max_slots))) {<br>+=A0=A0=A0 =A0=A0=A0 printk(KERN_ERR &quot;Wr=
ong Slot is specified.\n&quot;);<br>
+=A0=A0=A0 =A0=A0=A0 return -EINVAL;<br>+=A0=A0=A0 }<br>+<br>+=A0=A0=A0 /* =
should write to the next slot*/<br>+=A0=A0=A0 (*idx)--;<br>+<br>+=A0=A0=A0 =
len =3D 4;=A0=A0=A0 =A0=A0=A0 /* table header */<br>+=A0=A0=A0 len +=3D bbm=
-&gt;table-&gt;total &lt;&lt; 2;<br>+<br>+=A0=A0=A0 tmp =3D (unsigned char =
*)bbm-&gt;data_buf;<br>
+=A0=A0=A0 mtd-&gt;write(mtd, (*idx) &lt;&lt; bbm-&gt;page_shift,<br>+=A0=
=A0=A0 =A0=A0=A0 =A0=A0 1 &lt;&lt; bbm-&gt;page_shift, &amp;retlen, tmp);<b=
r>+<br>+=A0=A0=A0 return 0;<br>+}<br>+<br>+static int pxa3xx_scan_rltable(s=
truct mtd_info *mtd)<br>+{<br>
+=A0=A0=A0 struct pxa3xx_bbm *bbm =3D NULL;<br>+=A0=A0=A0 struct relocate_t=
able *table;<br>+=A0=A0=A0 int page, max_page;<br>+=A0=A0=A0 size_t retlen;=
<br>+=A0=A0=A0 int ret, retry_count =3D 3;<br>+<br>+=A0=A0=A0 if (verify_bb=
m_magic(mtd, &amp;bbm) &lt; 0) {<br>
+=A0=A0=A0 =A0=A0=A0 /* BBM don&#39;t support this type of flash */<br>+=A0=
=A0=A0 =A0=A0=A0 return -EINVAL;<br>+=A0=A0=A0 }<br>+<br>+=A0=A0=A0 pxa3xx_=
init_rltable(mtd);<br>+<br>+=A0=A0=A0 table =3D bbm-&gt;table;<br>+<br>+=A0=
=A0=A0 bbm-&gt;current_slot =3D -1;<br>+=A0=A0=A0 page =3D (mtd-&gt;erasesi=
ze &gt;&gt; bbm-&gt;page_shift) - bbm-&gt;max_slots;<br>
+=A0=A0=A0 max_page =3D mtd-&gt;erasesize &gt;&gt; bbm-&gt;page_shift;<br>+=
=A0=A0=A0 for (; page &lt; max_page; page++, retry_count =3D 3) {<br>+retry=
:<br>+=A0=A0=A0 =A0=A0=A0 memset(bbm-&gt;data_buf, 0, mtd-&gt;writesize + m=
td-&gt;oobsize);<br>+=A0=A0=A0 =A0=A0=A0 ret =3D mtd-&gt;read(mtd, (page &l=
t;&lt; bbm-&gt;page_shift),<br>
+=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 =A0=A0=A0 mtd-&gt;writesize, &amp;retlen, bb=
m-&gt;data_buf);<br>+=A0=A0=A0 =A0=A0=A0 if (ret =3D=3D 0) {<br>+=A0=A0=A0 =
=A0=A0=A0 =A0=A0=A0 if (table-&gt;header =3D=3D PXA_RLTABLE_HEADER) {<br>+=
=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 =A0=A0=A0 bbm-&gt;current_slot =3D page;<br>+=
=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 =A0=A0=A0 break;<br>
+=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 }<br>+=A0=A0=A0 =A0=A0=A0 } else {<br>+=A0=
=A0=A0 =A0=A0=A0 =A0=A0=A0 if (retry_count--)<br>+=A0=A0=A0 =A0=A0=A0 =A0=
=A0=A0 =A0=A0=A0 goto retry;<br>+=A0=A0=A0 =A0=A0=A0 }<br>+=A0=A0=A0 }<br>+=
=A0=A0=A0 if (bbm-&gt;current_slot !=3D -1) {<br>+=A0=A0=A0 =A0=A0=A0 pr_de=
bug(&quot;Found relocation table at page:%d\n&quot;,<br>
+=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 bbm-&gt;current_slot);<br>+=A0=A0=A0 =A0=A0=
=A0 dump_rltable(bbm);<br>+=A0=A0=A0 } else {<br>+=A0=A0=A0 =A0=A0=A0 pr_er=
r(&quot;Can&#39;t recognize relocation table.\n&quot;);<br>+=A0=A0=A0 =A0=
=A0=A0 pr_err(&quot;CAUTION: It may cause unpredicated error\n&quot;);<br>
+=A0=A0=A0 =A0=A0=A0 pr_err(&quot;Please re-initialize the flash.\n&quot;);=
<br>+=A0=A0=A0 =A0=A0=A0 memset((unsigned char *)bbm-&gt;table, 0,<br>+=A0=
=A0=A0 =A0=A0=A0 =A0=A0=A0 sizeof(struct relocate_table));<br>+=A0=A0=A0 =
=A0=A0=A0 return -EFAULT;<br>+=A0=A0=A0 }<br>+=A0=A0=A0 return 0;<br>
+}<br>+<br>+/*<br>+ * Find the relocated block of the bad one.<br>+ * If it=
&#39;s a good block, return 0. Otherwise, return a relocated one.<br>+ * id=
x points to the next relocation entry<br>+ * If the relocated block is bad,=
 an new entry will be added into the<br>
+ * bottom of the relocation table.<br>+ */<br>+static loff_t pxa3xx_search=
_rlentry(struct mtd_info *mtd, loff_t ofs)<br>+{<br>+=A0=A0=A0 struct pxa3x=
x_bbm *bbm =3D NULL;<br>+=A0=A0=A0 struct relocate_table *table =3D NULL;<b=
r>+=A0=A0=A0 struct relocate_entry *entry =3D NULL;<br>
+=A0=A0=A0 int i, block;<br>+<br>+=A0=A0=A0 /*<br>+=A0=A0=A0 =A0* In SLC, b=
lock 0 shouldn&#39;t be broken.<br>+=A0=A0=A0 =A0* In some command, address=
 is assigned to 0 if it doesn&#39;t need<br>+=A0=A0=A0 =A0* to operate addr=
ess. So just skip it.<br>+=A0=A0=A0 =A0*/<br>
+=A0=A0=A0 if (ofs &lt;=3D 0)<br>+=A0=A0=A0 =A0=A0=A0 return ofs;<br>+<br>+=
=A0=A0=A0 if (verify_bbm_magic(mtd, &amp;bbm) &lt; 0)<br>+=A0=A0=A0 =A0=A0=
=A0 return ofs;<br>+<br>+=A0=A0=A0 table =3D bbm-&gt;table;<br>+=A0=A0=A0 e=
ntry =3D bbm-&gt;entry;<br>+<br>+=A0=A0=A0 block =3D ofs &gt;&gt; bbm-&gt;e=
rase_shift;<br>
+<br>+=A0=A0=A0 if ((bbm-&gt;current_slot =3D=3D -1) || (table-&gt;total &l=
t;=3D 0)<br>+=A0=A0=A0 =A0=A0=A0 || (block &gt;=3D (mtd-&gt;size &gt;&gt; b=
bm-&gt;erase_shift)))<br>+=A0=A0=A0 =A0=A0=A0 return ofs;<br>+<br>+=A0=A0=
=A0 ofs =3D ofs - (block &lt;&lt; bbm-&gt;erase_shift);=A0=A0=A0 /* save of=
fset */<br>
+<br>+=A0=A0=A0 for (i =3D 0; i &lt; table-&gt;total; i++) {<br>+=A0=A0=A0 =
=A0=A0=A0 if (block =3D=3D entry[i].from) {<br>+=A0=A0=A0 =A0=A0=A0 =A0=A0=
=A0 block =3D entry[i].to;<br>+=A0=A0=A0 =A0=A0=A0 =A0=A0=A0 break;<br>+=A0=
=A0=A0 =A0=A0=A0 }<br>+=A0=A0=A0 }<br>+=A0=A0=A0 ofs +=3D block &lt;&lt; bb=
m-&gt;erase_shift;<br>
+=A0=A0=A0 return ofs;<br>+}<br>+<br>+static int pxa3xx_mark_rlentry(struct=
 mtd_info *mtd, int block)<br>+{<br>+=A0=A0=A0 struct pxa3xx_bbm *bbm =3D N=
ULL;<br>+=A0=A0=A0 int ret =3D 0;<br>+<br>+=A0=A0=A0 ret =3D verify_bbm_mag=
ic(mtd, &amp;bbm);<br>+=A0=A0=A0 if (ret &lt; 0) {<br>
+=A0=A0=A0 =A0=A0=A0 /* BBM don&#39;t support this type of flash */<br>+=A0=
=A0=A0 =A0=A0=A0 return -EINVAL;<br>+=A0=A0=A0 }<br>+<br>+=A0=A0=A0 ret =3D=
 update_rltable(mtd, block);<br>+=A0=A0=A0 if (ret)<br>+=A0=A0=A0 =A0=A0=A0=
 return ret;<br>+<br>+=A0=A0=A0 return sync_rltable(mtd, &amp;(bbm-&gt;curr=
ent_slot));<br>
+}<br>+<br>+/* If Marvell BBM is used, return 0. Otherwise, return negative=
 value. */<br>+struct pxa3xx_bbm *pxa3xx_query_bbm(void)<br>+{<br>+=A0=A0=
=A0 if (pxa3xx_bbm)<br>+=A0=A0=A0 =A0=A0=A0 return pxa3xx_bbm;<br>+=A0=A0=
=A0 return NULL;<br>+}<br>
+EXPORT_SYMBOL(pxa3xx_query_bbm);<br>+<br>+static int __init pxa3xx_bbm_ini=
t(void)<br>+{<br>+=A0=A0=A0 struct pxa3xx_bbm *bbm;<br>+<br>+=A0=A0=A0 bbm =
=3D kzalloc(sizeof(struct pxa3xx_bbm), GFP_KERNEL);<br>+=A0=A0=A0 if (!bbm)=
<br>+=A0=A0=A0 =A0=A0=A0 return -ENOMEM;<br>
+<br>+=A0=A0=A0 bbm-&gt;magic=A0=A0=A0 =A0=A0=A0 =3D PXA_BBM_MAGIC;<br>+=A0=
=A0=A0 bbm-&gt;uninit=A0=A0=A0 =A0=A0=A0 =3D pxa3xx_uninit_rltable;<br>+=A0=
=A0=A0 bbm-&gt;search=A0=A0=A0 =A0=A0=A0 =3D pxa3xx_search_rlentry;<br>+=A0=
=A0=A0 bbm-&gt;block_markbad=A0=A0=A0 =3D pxa3xx_mark_rlentry;<br>+=A0=A0=
=A0 bbm-&gt;scan_bbt=A0=A0=A0 =A0=A0=A0 =3D pxa3xx_scan_rltable;<br>
+<br>+=A0=A0=A0 pxa3xx_bbm =3D bbm;<br>+<br>+=A0=A0=A0 return 0;<br>+}<br>+=
subsys_initcall(pxa3xx_bbm_init);<br>+<br>+static void pxa3xx_bbm_exit(void=
)<br>+{<br>+=A0=A0=A0 if (pxa3xx_bbm) {<br>+=A0=A0=A0 =A0=A0=A0 kfree(pxa3x=
x_bbm);<br>+=A0=A0=A0 =A0=A0=A0 pxa3xx_bbm =3D NULL;<br>
+=A0=A0=A0 }<br>+}<br>+module_exit(pxa3xx_bbm_exit);<br>+<br>+MODULE_LICENS=
E(&quot;GPL&quot;);<br>+MODULE_DESCRIPTION(&quot;Marvell PXA3xx Bad Block M=
anagement&quot;);<br>-- <br>1.5.6.5<br><br>

--001517741a149782ca047465a8bd--
--001517741a149782d2047465a8bf
Content-Type: text/x-patch; charset=US-ASCII; 
	name="0001--MTD-NAND-pxa3xx_nand-enable-PXA3xx-bad-block-ma.patch"
Content-Disposition: attachment; 
	filename="0001--MTD-NAND-pxa3xx_nand-enable-PXA3xx-bad-block-ma.patch"
Content-Transfer-Encoding: base64
X-Attachment-Id: f_g01cks240

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