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sio: UM8669F cleanup and clarification

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This commit is contained in:
RichardG867
2023-08-09 16:54:08 -03:00
parent b99c47de5c
commit 4837cbc41f
1 changed files with 7 additions and 6 deletions
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13
src/sio/sio_um8669f.c
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@@ -39,7 +39,9 @@
#include <86box/isapnp.h> #include <86box/isapnp.h>
#include <86box/plat_unused.h> #include <86box/plat_unused.h>
/* This ROM was reconstructed out of many assumptions, some of which based on the IT8671F. */ /* Real chips don't have a PnP ROM and instead rely on the BIOS going in blind.
We create a fake ROM here (with values based on the IT8671F) to delegate
all the logical device register handling over to the ISAPnP subsystem. */
static uint8_t um8669f_pnp_rom[] = { static uint8_t um8669f_pnp_rom[] = {
0x55, 0xa3, 0x86, 0x69, 0x00, 0x00, 0x00, 0x00, 0x00, /* UMC8669, dummy checksum (filled in by isapnp_add_card) */ 0x55, 0xa3, 0x86, 0x69, 0x00, 0x00, 0x00, 0x00, 0x00, /* UMC8669, dummy checksum (filled in by isapnp_add_card) */
0x0a, 0x10, 0x10, /* PnP version 1.0, vendor version 1.0 */ 0x0a, 0x10, 0x10, /* PnP version 1.0, vendor version 1.0 */
@@ -61,7 +63,7 @@ static uint8_t um8669f_pnp_rom[] = {
0x22, 0xfa, 0x1f, /* IRQ 1/3/4/5/6/7/8/9/10/11/12 */ 0x22, 0xfa, 0x1f, /* IRQ 1/3/4/5/6/7/8/9/10/11/12 */
0x47, 0x00, 0x00, 0x01, 0xf8, 0x03, 0x08, 0x08, /* I/O 0x100-0x3F8, decodes 10-bit, 8-byte alignment, 8 addresses */ 0x47, 0x00, 0x00, 0x01, 0xf8, 0x03, 0x08, 0x08, /* I/O 0x100-0x3F8, decodes 10-bit, 8-byte alignment, 8 addresses */
0x15, 0x41, 0xd0, 0xff, 0xff, 0x00, /* logical device PNPFFFF (just a dummy to create a gap in LDNs) */ 0x15, 0x41, 0xd0, 0xff, 0xff, 0x00, /* logical device PNPFFFF (dummy to create a gap in LDNs) */
0x15, 0x41, 0xd0, 0xb0, 0x2f, 0x01, /* logical device PNPB02F, can participate in boot */ 0x15, 0x41, 0xd0, 0xb0, 0x2f, 0x01, /* logical device PNPB02F, can participate in boot */
0x47, 0x00, 0x00, 0x01, 0xf8, 0x03, 0x08, 0x08, /* I/O 0x100-0x3F8, decodes 10-bit, 8-byte alignment, 8 addresses */ 0x47, 0x00, 0x00, 0x01, 0xf8, 0x03, 0x08, 0x08, /* I/O 0x100-0x3F8, decodes 10-bit, 8-byte alignment, 8 addresses */
@@ -113,10 +115,9 @@ um8669f_log(const char *fmt, ...)
#endif #endif
typedef struct um8669f_t { typedef struct um8669f_t {
int locked; uint8_t locked;
int cur_reg_108; uint8_t cur_reg_108;
void *pnp_card; void *pnp_card;
isapnp_device_config_t *pnp_config[5];
uint8_t regs_108[256]; uint8_t regs_108[256];