ref: 7a145e89b301a1865661f7a6e60a21731f12824f
parent: 978628d67994819f0b3b9e2a0834d8941a21f6b5
author: cinap_lenrek <cinap_lenrek@felloff.net>
date: Mon Dec 5 13:32:58 EST 2016
audioac97: support for ICH4-ICH7 based cards with memory mapped registers (thanks echoline)
--- a/sys/src/9/pc/audioac97.c
+++ b/sys/src/9/pc/audioac97.c
@@ -50,6 +50,9 @@
ulong port;
ulong mixport;
+ uchar *mmreg;
+ uchar *mmmix;
+ int ismmio;
Ring inring, micring, outring;
@@ -61,9 +64,6 @@
Ctlr *next;
};
-#define iorl(c, r) (inl((c)->port+(r)))
-#define iowl(c, r, l) (outl((c)->port+(r), (ulong)(l)))
-
enum {In = 0x00,
Out = 0x10,
@@ -192,13 +192,51 @@
return n0 - n;
}
-#define csr8r(c, r) (inb((c)->port+(r)))
-#define csr16r(c, r) (ins((c)->port+(r)))
-#define csr32r(c, r) (inl((c)->port+(r)))
-#define csr8w(c, r, b) (outb((c)->port+(r), (int)(b)))
-#define csr16w(c, r, w) (outs((c)->port+(r), (ushort)(w)))
-#define csr32w(c, r, w) (outl((c)->port+(r), (ulong)(w)))
+static uchar
+csr8r(Ctlr *c, int r){+ if(c->ismmio)
+ return *(uchar*)(c->mmreg+r);
+ return inb(c->port+r);
+}
+static ushort
+csr16r(Ctlr *c, int r){+ if(c->ismmio)
+ return *(ushort*)(c->mmreg+r);
+ return ins(c->port+r);
+}
+
+static ulong
+csr32r(Ctlr *c, int r){+ if(c->ismmio)
+ return *(ulong*)(c->mmreg+r);
+ return inl(c->port+r);
+}
+
+static void
+csr8w(Ctlr *c, int r, uchar v){+ if(c->ismmio)
+ *(uchar*)(c->mmreg+r) = v;
+ else
+ outb(c->port+r, (int)v);
+}
+
+static void
+csr16w(Ctlr *c, int r, ushort v){+ if(c->ismmio)
+ *(ushort*)(c->mmreg+r) = v;
+ else
+ outs(c->port+r, v);
+}
+
+static void
+csr32w(Ctlr *c, int r, ulong v){+ if(c->ismmio)
+ *(ulong*)(c->mmreg+r) = v;
+ else
+ outl(c->port+r, v);
+}
+
/* audioac97mix */
extern void ac97mixreset(Audio *,
void (*wr)(Audio*,int,ushort),
@@ -210,13 +248,12 @@
Ctlr *ctlr;
int i;
ctlr = adev->ctlr;
- for(i = 0; i < Maxbusywait/10; i++){+ for(i = 0; i <= Maxbusywait/10; i++){if((csr8r(ctlr, Cas) & Casp) == 0)
- break;
+ return;
microdelay(10);
}
- if(i == Maxbusywait)
- print("#A%d: ac97 exhausted waiting codec access\n", adev->ctlrno);+ print("#A%d: ac97 exhausted waiting codec access\n", adev->ctlrno);}
static void
@@ -225,7 +262,10 @@
Ctlr *ctlr;
ac97waitcodec(adev);
ctlr = adev->ctlr;
- outs(ctlr->mixport+port, val);
+ if(ctlr->ismmio)
+ *(ushort*)(ctlr->mmmix+port) = val;
+ else
+ outs(ctlr->mixport+port, val);
}
static ushort
@@ -234,6 +274,8 @@
Ctlr *ctlr;
ac97waitcodec(adev);
ctlr = adev->ctlr;
+ if(ctlr->ismmio)
+ return *(ushort*)(ctlr->mmmix+port);
return ins(ctlr->mixport+port);
}
@@ -471,27 +513,44 @@
adev->ctlr = ctlr;
ctlr->adev = adev;
- if((p->mem[0].bar & 1) == 0 || (p->mem[1].bar & 1) == 0){- print("ac97: not i/o regions 0x%04lux 0x%04lux\n", p->mem[0].bar, p->mem[1].bar);- return -1;
- }
+ /* ICH4 through ICH7 may use memory-type base address registers */
+ if(p->vid == 0x8086 &&
+ (p->did == 0x24c5 || p->did == 0x24d5 || p->did == 0x266e || p->did == 0x27de) &&
+ (p->mem[2].bar != 0 && p->mem[3].bar != 0) &&
+ ((p->mem[2].bar & 1) == 0 && (p->mem[3].bar & 1) == 0)){+ ctlr->mmmix = vmap(p->mem[2].bar & ~0xf, p->mem[2].size);
+ if(ctlr->mmmix == nil){+ print("ac97: vmap failed for mmmix 0x%08lux\n", p->mem[2].bar);+ return -1;
+ }
+ ctlr->mmreg = vmap(p->mem[3].bar & ~0xf, p->mem[3].size);
+ if(ctlr->mmreg == nil){+ print("ac97: vmap failed for mmreg 0x%08lux\n", p->mem[3].bar);+ vunmap(ctlr->mmmix, p->mem[2].size);
+ return -1;
+ }
+ ctlr->ismmio = 1;
+ }else{+ if((p->mem[0].bar & 1) == 0 || (p->mem[1].bar & 1) == 0){+ print("ac97: not i/o regions 0x%04lux 0x%04lux\n", p->mem[0].bar, p->mem[1].bar);+ return -1;
+ }
- i = 1;
- if(p->vid == 0x1039 && p->did == 0x7012){- ctlr->sis7012 = 1;
- //i = 0; i/o bars swaped?
- }
- ctlr->port = p->mem[i].bar & ~3;
- if(ioalloc(ctlr->port, p->mem[i].size, 0, "ac97") < 0){- print("ac97: ioalloc failed for port 0x%04lux\n", ctlr->port);- return -1;
- }
- i = (i+1) & 1;
- ctlr->mixport = p->mem[i].bar & ~3;
- if(ioalloc(ctlr->mixport, p->mem[i].size, 0, "ac97mix") < 0){- print("ac97: ioalloc failed for mixport 0x%04lux\n", ctlr->mixport);- iofree(ctlr->port);
- return -1;
+ if(p->vid == 0x1039 && p->did == 0x7012){+ ctlr->sis7012 = 1; /* i/o bars swapped? */
+ }
+
+ ctlr->port = p->mem[1].bar & ~3;
+ if(ioalloc(ctlr->port, p->mem[1].size, 0, "ac97") < 0){+ print("ac97: ioalloc failed for port 0x%04lux\n", ctlr->port);+ return -1;
+ }
+ ctlr->mixport = p->mem[0].bar & ~3;
+ if(ioalloc(ctlr->mixport, p->mem[0].size, 0, "ac97mix") < 0){+ print("ac97: ioalloc failed for mixport 0x%04lux\n", ctlr->mixport);+ iofree(ctlr->port);
+ return -1;
+ }
}
irq = p->intl;