diff options
| author | dzwdz | 2021-10-08 19:29:12 +0200 |
|---|---|---|
| committer | dzwdz | 2021-10-08 19:29:12 +0200 |
| commit | acf41ff6fee44dd24f9383d96fecd992dcb072e2 (patch) | |
| tree | b9f1213bd1d3022866974ee91dcd0c746fa144be /src/kernel/arch/i386 | |
| parent | 6a90401ccb0d5a830772b8669113e1a17b6f40b7 (diff) | |
ATA: implement the IDENTIFY PACKET DEVICE command
Diffstat (limited to 'src/kernel/arch/i386')
| -rw-r--r-- | src/kernel/arch/i386/ata.c | 28 |
1 files changed, 19 insertions, 9 deletions
diff --git a/src/kernel/arch/i386/ata.c b/src/kernel/arch/i386/ata.c index 60dbb15..9224ed6 100644 --- a/src/kernel/arch/i386/ata.c +++ b/src/kernel/arch/i386/ata.c @@ -1,5 +1,6 @@ #include <kernel/arch/i386/ata.h> #include <kernel/arch/i386/port_io.h> +#include <kernel/panic.h> #include <stdbool.h> #include <kernel/arch/io.h> @@ -83,12 +84,18 @@ static bool ata_identify(int drive) { uint16_t data[256]; uint8_t v; - // TODO test for float - ata_driveselect(drive, 0); for (int i = 2; i < 6; i++) port_out8(iobase + i, 0); - port_out8(iobase + CMD, 0xEC); // IDENTIFY + switch (ata_drives[drive].type) { + case DEV_PATA: + port_out8(iobase + CMD, 0xEC); // IDENTIFY + break; + case DEV_PATAPI: + port_out8(iobase + CMD, 0xA1); // IDENTIFY PACKET DEVICE + break; + default: panic_invalid_state(); + } v = port_in8(iobase + STATUS); if (v == 0) return false; // nonexistent drive @@ -110,12 +117,15 @@ void ata_init(void) { tty_const("probing drive "); _tty_var(i); ata_detecttype(i); - _tty_var(ata_drives[i].type); - // if (ata_identify(i)) { - // tty_const(" - "); - // _tty_var(ata_drives[i].sectors); - // tty_const(" sectors (512b)"); - // } + if (ata_drives[i].type != DEV_UNKNOWN) { + if (ata_identify(i)) { + tty_const(" - "); + _tty_var(ata_drives[i].sectors); + tty_const(" sectors (512b)"); + } else { + tty_const(" identify failed"); + } + } tty_const("\n"); } } |