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modified to expose the PCI "native" driver interface (this is different

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from the PCIBIOS) to TOS
This commit is contained in:
Markus Fröschle
2015-02-14 08:45:59 +00:00
parent 64b46fd15d
commit 168e1f439c
3 changed files with 69 additions and 22 deletions
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53
tos/bascook/sources/bascook.c
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@@ -10,13 +10,13 @@ struct driver_table *get_bas_drivers(void)
struct driver_table *ret = NULL;
__asm__ __volatile__(
" bra.s do_trap \n\t"
" .dc.l 0x5f424153 \n\t" // '_BAS'
"do_trap: trap #0 \n\t"
" move.l d0,%[ret] \n\t"
: [ret] "=m" (ret) /* output */
: /* no inputs */
: /* clobbered */
" bra.s do_trap \n\t"
" .dc.l 0x5f424153 \n\t" // '_BAS'
"do_trap: trap #0 \n\t"
" move.l d0,%[ret] \n\t"
: [ret] "=m" (ret) /* output */
: /* no inputs */
: /* clobbered */
);
return ret;
@@ -31,7 +31,7 @@ struct driver_table *get_bas_drivers(void)
static void __attribute__((interrupt)) my_own_trap0_handler(void)
{
__asm__ __volatile__(
" clr.l d0 \n\t" // return 0 to indicate not supported
" clr.l d0 \n\t" // return 0 to indicate not supported
:
:
:
@@ -85,20 +85,22 @@ void setcookie(uint32_t cookie, uint32_t value)
printf("cannot set cookie, cookie jar is full!\r\n");
}
#define COOKIE_DMAC 0x444d4143L /* FireTOS DMA API */
#define COOKIE_DMAC 0x444d4143L /* FireTOS DMA API */
#define COOKIE_BAS_ 0x4241535fL /* BAS_ cookie (points to driver table struct */
static char *dt_to_str(enum driver_type dt)
{
switch (dt)
{
case BLOCKDEV_DRIVER: return "generic block device driver";
case CHARDEV_DRIVER: return "generic character device driver";
case VIDEO_DRIVER: return "video/framebuffer driver";
case XHDI_DRIVER: return "XHDI compatible hard disk driver";
case MCD_DRIVER: return "multichannel DMA driver";
case PCI_DRIVER: return "PCI interface driver";
case MMU_DRIVER: return "MMU lock/unlock pages driver";
default: return "unknown driver type";
case BLOCKDEV_DRIVER: return "generic block device driver";
case CHARDEV_DRIVER: return "generic character device driver";
case VIDEO_DRIVER: return "video/framebuffer driver";
case XHDI_DRIVER: return "XHDI compatible hard disk driver";
case MCD_DRIVER: return "multichannel DMA driver";
case PCI_DRIVER: return "PCI interface driver";
case MMU_DRIVER: return "MMU lock/unlock pages driver";
case PCI_NATIVE_DRIVER: return "PCI interface native driver";
default: return "unknown driver type";
}
}
@@ -112,16 +114,17 @@ int main(int argc, char *argv[])
(void) Cconws("retrieve BaS driver interface\r\n");
ssp = (void *) Super(0L); /* go to supervisor mode, we are doing dirty tricks */
ssp = (void *) Super(0L); /* go to supervisor mode, we are doing dirty tricks */
sig = * (long *)((*sysbase) + 0x2c);
/*
* first check if we are on EmuTOS, FireTOS want's to do everything itself
*/
if (sig == 0x45544f53)
{
old_vector = Setexc(0x20, my_own_trap0_handler); /* set our own temporarily */
dt = get_bas_drivers(); /* trap #0 */
(void) Setexc(0x20, old_vector); /* restore original vector */
old_vector = Setexc(0x20, my_own_trap0_handler); /* set our own temporarily */
dt = get_bas_drivers(); /* trap #0 */
(void) Setexc(0x20, old_vector); /* restore original vector */
if (dt)
{
@@ -144,6 +147,12 @@ int main(int argc, char *argv[])
}
ifc++;
}
/*
* set cookie to be able to find the driver table later on
*/
setcookie(COOKIE_BAS_, (uint32_t) dt);
printf("BAS_ cookie set to %p\r\n", dt);
}
else
{
@@ -157,7 +166,7 @@ int main(int argc, char *argv[])
}
Super(ssp);
while (Cconis()) Cconin(); /* eat keys */
while (Cconis()) Cconin(); /* eat keys */
return 0;
}