Re: [9front] driver for intel wireless 7260?

[kemal <kemalinanc8@gmail.com>]

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2021-07-27 7:21 GMT, Eckard Brauer <eckard.brauer@gmx.de>:
> Just a few weeks ago, I had some mailing with Kemal for that topic, as
> he tried to help me on that. My little understanding reached it's end
> early, and unfortunately we had no luck getting the card to work
> finally, but Kemal already did some patches I tried out.

correct. (except for the few weeks part, it has been months :))

just now i cleaned up those patches and now i have a diff that
should work. it can be applied with `ape/patch -p0 < diff.txt`

this diff might work with 3160, but requires normal additions like
pci ids etc. PLUS this line:

"	if(ctlr->type == Type7260){"

being changed to

"	if(ctlr->type == Type7260 || ctlr->type == Type3160){

hope it works.

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--- /sys/src/9/pc/etheriwl.c
+++ /sys/src/9/pc/etheriwl.c
@@ -1,9 +1,10 @@
 /*
  * Intel WiFi Link driver.
  *
- * Written without any documentation but Damien Bergaminis
- * OpenBSD iwn(4) and iwm(4) driver sources. Requires intel
- * firmware to be present in /lib/firmware/iwn-* on attach.
+ * Written without any documentation but Damien Bergamini's
+ * iwn(4) and Stefan Sperling's iwm(4) OpenBSD driver sources.
+ * Requires Intel firmware to be present in /lib/firmware/iw[nm]-*
+ * on attach.
  */
 
 #include "u.h"
@@ -242,6 +243,8 @@
 
 	SbCpu1Status	= 0xa01e30,
 	SbCpu2Status	= 0xa01e34,
+	OscClk		= 0xa04068,
+		OscClkCtrl	= 1<<3,
 	UregChick	= 0xa05c00,
 		UregChickMsiEnable	= 1<<24,
 
@@ -631,6 +634,7 @@
 	Type6005	= 11,	/* also Centrino Advanced-N 6030, 6235 */
 	Type2030	= 12,
 	Type2000	= 16,
+	Type7260	= 30,
 
 	Type8265	= 35,
 };
@@ -686,6 +690,7 @@
 	[Type6005] "iwn-6005", /* see in iwlattach() below */
 	[Type2030] "iwn-2030",
 	[Type2000] "iwn-2000",
+	[Type7260] "iwm-7260-17",
 };
 
 static char *qcmd(Ctlr *ctlr, uint qid, uint code, uchar *data, int size, Block *block);
@@ -1088,6 +1093,22 @@
 		nicunlock(ctlr);
 	}
 
+	/* Enable the oscillator to count wake up time for L1 exit. (weird W/A) */
+	if(ctlr->type == Type7260){
+		if((err = niclock(ctlr)) != nil)
+			return err;
+
+		prphread(ctlr, OscClk);
+		prphread(ctlr, OscClk);
+		delay(20);
+
+		prphwrite(ctlr, OscClk, prphread(ctlr, OscClk) | OscClkCtrl);
+
+		prphread(ctlr, OscClk);
+		prphread(ctlr, OscClk);
+
+		nicunlock(ctlr);
+	}
 	if(ctlr->family < 8000){
 		if((err = niclock(ctlr)) != nil)
 			return err;
@@ -3416,6 +3437,12 @@
 		iunlock(ctlr);
 		return "qcmd: broken";
 	}
+	/* wake up the nic (just needed for 7k) */
+	if(ctlr->family == 7000 && q->n == 0)
+		if(niclock(ctlr) != nil){
+			iunlock(ctlr);
+			return "qcmd: busy";
+		}
 	q->n++;
 	q->lastcmd = code;
 
@@ -4242,6 +4269,9 @@
 		if(tx != nil && tx->n > 0){
 			tx->n--;
 			wakeup(tx);
+			/* unlock 7k family nics as all commands are done */
+			if(ctlr->family == 7000 && tx->n == 0)
+				nicunlock(ctlr);
 		}
 	}
 
@@ -4349,6 +4379,11 @@
 		case 0x088e:	/* Centrino Advanced-N 6235 */
 		case 0x088f:	/* Centrino Advanced-N 6235 */
 			family = 0;
+			fwname = nil;
+			break;
+		case 0x08b1:	/* Wireless AC 7260 */
+		case 0x08b2:	/* Wireless AC 7260 */
+			family = 7000;
 			fwname = nil;
 			break;
 		case 0x24f3:	/* Wireless AC 8260 */