netdev - [PATCH net-next 3/9] tg3: Don't send APE events for NCSI firmware

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Date:	Wed, 15 Sep 2010 11:59:55 -0700
From:	"Matt Carlson" <mcarlson@...adcom.com>
To:	davem@...emloft.net
cc:	netdev@...r.kernel.org, andy@...yhouse.net, mcarlson@...adcom.com
Subject: [PATCH net-next 3/9] tg3: Don't send APE events for NCSI
 firmware

NCSI firmware does not accept APE events.  It relies on a "driver state"
location in shared memory to tell it what the driver's current state is.

This patch pivots the code to use the new driver state scheme.

Reviewed-by: Benjamin Li <benli@...adcom.com>
Reviewed-by: Michael Chan <mchan@...adcom.com>
Signed-off-by: Matt Carlson <mcarlson@...adcom.com>
---
 drivers/net/tg3.c |   22 ++++++++++++++++++++--
 drivers/net/tg3.h |    9 ++++++++-
 2 files changed, 28 insertions(+), 3 deletions(-)

diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index 38f1b19..fc9706c 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -6596,6 +6596,10 @@ static void tg3_ape_send_event(struct tg3 *tp, u32 event)
 	int i;
 	u32 apedata;
 
+	/* NCSI does not support APE events */
+	if (tp->tg3_flags3 & TG3_FLG3_APE_HAS_NCSI)
+		return;
+
 	apedata = tg3_ape_read32(tp, TG3_APE_SEG_SIG);
 	if (apedata != APE_SEG_SIG_MAGIC)
 		return;
@@ -6647,6 +6651,8 @@ static void tg3_ape_driver_state_change(struct tg3 *tp, int kind)
 			APE_HOST_DRIVER_ID_MAGIC(TG3_MAJ_NUM, TG3_MIN_NUM));
 		tg3_ape_write32(tp, TG3_APE_HOST_BEHAVIOR,
 				APE_HOST_BEHAV_NO_PHYLOCK);
+		tg3_ape_write32(tp, TG3_APE_HOST_DRVR_STATE,
+				    TG3_APE_HOST_DRVR_STATE_START);
 
 		event = APE_EVENT_STATUS_STATE_START;
 		break;
@@ -6658,6 +6664,16 @@ static void tg3_ape_driver_state_change(struct tg3 *tp, int kind)
 		 */
 		tg3_ape_write32(tp, TG3_APE_HOST_SEG_SIG, 0x0);
 
+		if (device_may_wakeup(&tp->pdev->dev) &&
+		    (tp->tg3_flags & TG3_FLAG_WOL_ENABLE)) {
+			tg3_ape_write32(tp, TG3_APE_HOST_WOL_SPEED,
+					    TG3_APE_HOST_WOL_SPEED_AUTO);
+			apedata = TG3_APE_HOST_DRVR_STATE_WOL;
+		} else
+			apedata = TG3_APE_HOST_DRVR_STATE_UNLOAD;
+
+		tg3_ape_write32(tp, TG3_APE_HOST_DRVR_STATE, apedata);
+
 		event = APE_EVENT_STATUS_STATE_UNLOAD;
 		break;
 	case RESET_KIND_SUSPEND:
@@ -12739,10 +12755,12 @@ static void __devinit tg3_read_dash_ver(struct tg3 *tp)
 
 	apedata = tg3_ape_read32(tp, TG3_APE_FW_VERSION);
 
-	if (tg3_ape_read32(tp, TG3_APE_FW_FEATURES) & TG3_APE_FW_FEATURE_NCSI)
+	if (tg3_ape_read32(tp, TG3_APE_FW_FEATURES) & TG3_APE_FW_FEATURE_NCSI) {
+		tp->tg3_flags3 |= TG3_FLG3_APE_HAS_NCSI;
 		fwtype = "NCSI";
-	else
+	} else {
 		fwtype = "DASH";
+	}
 
 	vlen = strlen(tp->fw_ver);
 
diff --git a/drivers/net/tg3.h b/drivers/net/tg3.h
index 783cd77..5cd0653 100644
--- a/drivers/net/tg3.h
+++ b/drivers/net/tg3.h
@@ -2180,7 +2180,7 @@
 #define TG3_APE_HOST_SEG_SIG		0x4200
 #define  APE_HOST_SEG_SIG_MAGIC		 0x484f5354
 #define TG3_APE_HOST_SEG_LEN		0x4204
-#define  APE_HOST_SEG_LEN_MAGIC		 0x0000001c
+#define  APE_HOST_SEG_LEN_MAGIC		 0x00000020
 #define TG3_APE_HOST_INIT_COUNT		0x4208
 #define TG3_APE_HOST_DRIVER_ID		0x420c
 #define  APE_HOST_DRIVER_ID_LINUX	 0xf0000000
@@ -2192,6 +2192,12 @@
 #define  APE_HOST_HEARTBEAT_INT_DISABLE	 0
 #define  APE_HOST_HEARTBEAT_INT_5SEC	 5000
 #define TG3_APE_HOST_HEARTBEAT_COUNT	0x4218
+#define TG3_APE_HOST_DRVR_STATE		0x421c
+#define TG3_APE_HOST_DRVR_STATE_START	 0x00000001
+#define TG3_APE_HOST_DRVR_STATE_UNLOAD	 0x00000002
+#define TG3_APE_HOST_DRVR_STATE_WOL	 0x00000003
+#define TG3_APE_HOST_WOL_SPEED		0x4224
+#define TG3_APE_HOST_WOL_SPEED_AUTO	 0x00008000
 
 #define TG3_APE_EVENT_STATUS		0x4300
 
@@ -2854,6 +2860,7 @@ struct tg3 {
 #define TG3_FLG3_USE_JUMBO_BDFLAG	0x00400000
 #define TG3_FLG3_L1PLLPD_EN		0x00800000
 #define TG3_FLG3_5717_PLUS		0x01000000
+#define TG3_FLG3_APE_HAS_NCSI		0x02000000
 
 	struct timer_list		timer;
 	u16				timer_counter;
-- 
1.7.1


--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html