From 16587900dae7b2f07e59b93b8acaab8a7047c37e Mon Sep 17 00:00:00 2001 From: Michael Sparmann Date: Sat, 13 Mar 2010 20:27:21 +0000 Subject: Implement fast VFL read API (as a dummy) for Nano2G git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25147 a1c6a512-1295-4272-9138-f99709370657 --- .../target/arm/s5l8700/ipodnano2g/ftl-nano2g.c | 29 ++++++++++++++++++++++ 1 file changed, 29 insertions(+) (limited to 'firmware/target/arm/s5l8700') diff --git a/firmware/target/arm/s5l8700/ipodnano2g/ftl-nano2g.c b/firmware/target/arm/s5l8700/ipodnano2g/ftl-nano2g.c index a188e986d6..56547fe3af 100644 --- a/firmware/target/arm/s5l8700/ipodnano2g/ftl-nano2g.c +++ b/firmware/target/arm/s5l8700/ipodnano2g/ftl-nano2g.c @@ -850,6 +850,35 @@ uint32_t ftl_vfl_read(uint32_t vpage, void* buffer, void* sparebuffer, } +/* Multi-bank version of ftl_vfl_read, will read ftl_banks pages in parallel */ +uint32_t ftl_vfl_read_fast(uint32_t vpage, void* buffer, void* sparebuffer, + uint32_t checkempty, uint32_t remaponfail) +{ + uint32_t i, rc = 0; + uint32_t ppb = (*ftl_nand_type).pagesperblock * ftl_banks; + uint32_t syshyperblocks = (*ftl_nand_type).blocks + - (*ftl_nand_type).userblocks - 0x17; + uint32_t abspage = vpage + ppb * syshyperblocks; + if (abspage + ftl_banks - 1 >= (*ftl_nand_type).blocks * ppb || abspage < ppb) + panicf("FTL: Trying to read out-of-bounds vPage %u", (unsigned)vpage); + //return 4; + + for (i = 0; i < ftl_banks; i++) + { + void* databuf = (void*)0; + void* sparebuf = (void*)0; + if (buffer) databuf = (void*)((uint32_t)buffer + 0x800 * i); + if (sparebuffer) sparebuf = (void*)((uint32_t)sparebuffer + 0x40 * i); + uint32_t ret = ftl_vfl_read(vpage + i, databuf, sparebuf, checkempty, remaponfail); + if (ret & 1) rc |= 1 << (i << 2); + if (ret & 2) rc |= 2 << (i << 2); + if (ret & 0x10) rc |= 4 << (i << 2); + if (ret & 0x100) rc |= 8 << (i << 2); + } + return rc; +} + + #ifndef FTL_READONLY /* Writes the specified vPage, dealing with all kinds of trouble */ uint32_t ftl_vfl_write_single(uint32_t vpage, void* buffer, void* sparebuffer) -- cgit v1.2.3