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Added untested read driver

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This commit is contained in:
Morten Delenk 2016-03-15 22:10:49 +01:00
parent 6306a83bea
commit 2408bb85cd
2 changed files with 20 additions and 2 deletions
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18
kernel/hal/x86/blk/BlockDevice.cpp
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@ -71,4 +71,22 @@ namespace MTGosHAL {
return drivenum;
}
BlockDevice::~BlockDevice() {};
auto BlockDevice::readSector(uint8_t drv, uint64_t sectorNum, uint8_t *buf) -> void {
if(!(existent&(1<<drv)))
return;
outb(ataports[drv>>1]+DRV, 0x40 | (drv&1)<<4);
outb(ataports[drv>>1]+SECTOR_CNT, 0);
outb(ataports[drv>>1]+LBAlo, (uint8_t)(sectorNum>>24));
outb(ataports[drv>>1]+LBAmid, (uint8_t)(sectorNum>>32));
outb(ataports[drv>>1]+LBAhi, (uint8_t)(sectorNum>>40));
outb(ataports[drv>>1]+SECTOR_CNT, 1);
outb(ataports[drv>>1]+LBAlo, (uint8_t)(sectorNum));
outb(ataports[drv>>1]+LBAmid, (uint8_t)(sectorNum>>8));
outb(ataports[drv>>1]+LBAhi, (uint8_t)(sectorNum>>16));
outb(ataports[drv>>1]+CMD, 0x24);
while(inb(ataports[drv>>1]+CMD)&0x80);
uint16_t *bufw=(uint16_t *)buf;
for(int i=0;i<256;i++)
bufw[i]=inb(ataports[drv>>1]);
}
}

4
kernel/hal/x86/include/blockdev.hpp
View file

@ -11,8 +11,8 @@ namespace MTGosHAL {
~BlockDevice();
auto getDriveCnt() -> uint8_t;
auto getDriveNumByName(const char *) -> uint8_t; //Returns -1 if device is not existent
auto readSector(uint32_t drv, uint64_t sectorNum, uint8_t *buf); //Has to be at least 512 bytes big!
auto readSectors(uint32_t drv, uint64_t sectorNum, uint32_t num, uint8_t *buf); //Has to be at least num*512 bytes big!
auto readSector(uint8_t drv, uint64_t sectorNum, uint8_t *buf) -> void; //Has to be at least 512 bytes big!
auto readSectors(uint8_t drv, uint64_t sectorNum, uint32_t num, uint8_t *buf) -> void; //Has to be at least num*512 bytes big!
};
}