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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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21
if/driver_vec.c
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@@ -124,6 +124,19 @@ static struct pci_bios_interface pci_interface =
.phys_to_virt = wrapper_phys_to_virt, .phys_to_virt = wrapper_phys_to_virt,
}; };
static struct pci_native_driver_interface pci_native_interface =
{
.pci_read_config_longword = pci_read_config_longword,
.pci_read_config_word = pci_read_config_longword,
.pci_read_config_byte = pci_read_config_byte,
.pci_write_config_longword = pci_write_config_longword,
.pci_write_config_word = pci_write_config_word,
.pci_write_config_byte = pci_write_config_byte,
.pci_hook_interrupt = pci_hook_interrupt,
.pci_unhook_interrupt = pci_unhook_interrupt,
.pci_get_resource = pci_get_resource,
};
/* /*
* driver interface struct for the BaS framebuffer video driver * driver interface struct for the BaS framebuffer video driver
*/ */
@@ -187,6 +200,14 @@ static struct generic_interface interfaces[] =
.revision = 1, .revision = 1,
.interface.mmu = &mmu_interface, .interface.mmu = &mmu_interface,
}, },
{
.type = PCI_NATIVE_DRIVER,
.name = "PCI_N",
.description = "BaS PCI native",
.version = 0,
.revision = 1,
.interface.pci_native = &pci_native_interface,
},
/* insert new drivers here */ /* insert new drivers here */
{ {

17
include/driver_vec.h
View File

@@ -38,6 +38,7 @@ enum driver_type
VIDEO_DRIVER, VIDEO_DRIVER,
PCI_DRIVER, PCI_DRIVER,
MMU_DRIVER, MMU_DRIVER,
PCI_NATIVE_DRIVER,
END_OF_DRIVERS = 0xffffffff, /* marks end of driver list */ END_OF_DRIVERS = 0xffffffff, /* marks end of driver list */
}; };
@@ -270,6 +271,21 @@ struct mmu_driver_interface
uint32_t (*report_pagesize)(void); uint32_t (*report_pagesize)(void);
}; };
struct pci_native_driver_interface
{
uint32_t (*pci_read_config_longword)(int32_t handle, int offset);
uint16_t (*pci_read_config_word)(int32_t handle, int offset);
uint8_t (*pci_read_config_byte)(int32_t handle, int offset);
int32_t (*pci_write_config_longword)(int32_t handle, int offset, uint32_t value);
int32_t (*pci_write_config_word)(int32_t handle, int offset, uint16_t value);
int32_t (*pci_write_config_byte)(int32_t handle, int offset, uint8_t value);
int32_t (*pci_hook_interrupt)(int32_t handle, void *handler, void *parameter);
int32_t (*pci_unhook_interrupt)(int32_t handle);
struct pci_rd (*pci_get_resource)(int32_t handle);
};
union interface union interface
{ {
struct generic_driver_interface *gdi; struct generic_driver_interface *gdi;
@@ -278,6 +294,7 @@ union interface
struct framebuffer_driver_interface *fb; struct framebuffer_driver_interface *fb;
struct pci_bios_interface *pci; struct pci_bios_interface *pci;
struct mmu_driver_interface *mmu; struct mmu_driver_interface *mmu;
struct pci_native_driver_interface *pci_native;
}; };
struct generic_interface struct generic_interface

53
tos/bascook/sources/bascook.c
View File

@@ -10,13 +10,13 @@ struct driver_table *get_bas_drivers(void)
struct driver_table *ret = NULL; struct driver_table *ret = NULL;
__asm__ __volatile__( __asm__ __volatile__(
" bra.s do_trap \n\t" " bra.s do_trap \n\t"
" .dc.l 0x5f424153 \n\t" // '_BAS' " .dc.l 0x5f424153 \n\t" // '_BAS'
"do_trap: trap #0 \n\t" "do_trap: trap #0 \n\t"
" move.l d0,%[ret] \n\t" " move.l d0,%[ret] \n\t"
: [ret] "=m" (ret) /* output */ : [ret] "=m" (ret) /* output */
: /* no inputs */ : /* no inputs */
: /* clobbered */ : /* clobbered */
); );
return ret; return ret;
@@ -31,7 +31,7 @@ struct driver_table *get_bas_drivers(void)
static void __attribute__((interrupt)) my_own_trap0_handler(void) static void __attribute__((interrupt)) my_own_trap0_handler(void)
{ {
__asm__ __volatile__( __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"); 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) static char *dt_to_str(enum driver_type dt)
{ {
switch (dt) switch (dt)
{ {
case BLOCKDEV_DRIVER: return "generic block device driver"; case BLOCKDEV_DRIVER: return "generic block device driver";
case CHARDEV_DRIVER: return "generic character device driver"; case CHARDEV_DRIVER: return "generic character device driver";
case VIDEO_DRIVER: return "video/framebuffer driver"; case VIDEO_DRIVER: return "video/framebuffer driver";
case XHDI_DRIVER: return "XHDI compatible hard disk driver"; case XHDI_DRIVER: return "XHDI compatible hard disk driver";
case MCD_DRIVER: return "multichannel DMA driver"; case MCD_DRIVER: return "multichannel DMA driver";
case PCI_DRIVER: return "PCI interface driver"; case PCI_DRIVER: return "PCI interface driver";
case MMU_DRIVER: return "MMU lock/unlock pages driver"; case MMU_DRIVER: return "MMU lock/unlock pages driver";
default: return "unknown driver type"; 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"); (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); sig = * (long *)((*sysbase) + 0x2c);
/* /*
* first check if we are on EmuTOS, FireTOS want's to do everything itself * first check if we are on EmuTOS, FireTOS want's to do everything itself
*/ */
if (sig == 0x45544f53) if (sig == 0x45544f53)
{ {
old_vector = Setexc(0x20, my_own_trap0_handler); /* set our own temporarily */ old_vector = Setexc(0x20, my_own_trap0_handler); /* set our own temporarily */
dt = get_bas_drivers(); /* trap #0 */ dt = get_bas_drivers(); /* trap #0 */
(void) Setexc(0x20, old_vector); /* restore original vector */ (void) Setexc(0x20, old_vector); /* restore original vector */
if (dt) if (dt)
{ {
@@ -144,6 +147,12 @@ int main(int argc, char *argv[])
} }
ifc++; 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 else
{ {
@@ -157,7 +166,7 @@ int main(int argc, char *argv[])
} }
Super(ssp); Super(ssp);
while (Cconis()) Cconin(); /* eat keys */ while (Cconis()) Cconin(); /* eat keys */
return 0; return 0;
} }