IB/qib: Use request_firmware() to load SD7220 firmware

Extract the microcode for the QLogic QLE7220 series IB HCA and use the
kernel microcode request facility to load the microcode.  This
supports Debian Linux's requirements to separate microcode which
doesn't have open source code available from the device driver.

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

1 files changed, 45 insertions, 11 deletions

diff --git a/drivers/infiniband/hw/qib/qib_sd7220.c b/drivers/infiniband/hw/qib/qib_sd7220.c
index 0aeed0e..e9f9f8b 100644
--- a/drivers/infiniband/hw/qib/qib_sd7220.c
+++ b/drivers/infiniband/hw/qib/qib_sd7220.c
@@ -1,5 +1,6 @@
 /*
- * Copyright (c) 2006, 2007, 2008, 2009 QLogic Corporation. All rights reserved.
+ * Copyright (c) 2006, 2007, 2008, 2009, 2010 QLogic Corporation.
+ * All rights reserved.
  * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved.
  *
  * This software is available to you under a choice of one of two
@@ -37,10 +38,14 @@
 
 #include <linux/pci.h>
 #include <linux/delay.h>
+#include <linux/firmware.h>
 
 #include "qib.h"
 #include "qib_7220.h"
 
+#define SD7220_FW_NAME "qlogic/sd7220.fw"
+MODULE_FIRMWARE(SD7220_FW_NAME);
+
 /*
  * Same as in qib_iba7220.c, but just the registers needed here.
  * Could move whole set to qib_7220.h, but decided better to keep
@@ -102,6 +107,10 @@ static int qib_internal_presets(struct qib_devdata *dd);
 /* Tweak the register (CMUCTRL5) that contains the TRIMSELF controls */
 static int qib_sd_trimself(struct qib_devdata *dd, int val);
 static int epb_access(struct qib_devdata *dd, int sdnum, int claim);
+static int qib_sd7220_ib_load(struct qib_devdata *dd,
+			      const struct firmware *fw);
+static int qib_sd7220_ib_vfy(struct qib_devdata *dd,
+			     const struct firmware *fw);
 
 /*
  * Below keeps track of whether the "once per power-on" initialization has
@@ -110,10 +119,13 @@ static int epb_access(struct qib_devdata *dd, int sdnum, int claim);
  * state of the reset "pin", is no longer valid. Instead, we check for the
  * actual uC code having been loaded.
  */
-static int qib_ibsd_ucode_loaded(struct qib_pportdata *ppd)
+static int qib_ibsd_ucode_loaded(struct qib_pportdata *ppd,
+				 const struct firmware *fw)
 {
 	struct qib_devdata *dd = ppd->dd;
-	if (!dd->cspec->serdes_first_init_done && (qib_sd7220_ib_vfy(dd) > 0))
+
+	if (!dd->cspec->serdes_first_init_done &&
+	    qib_sd7220_ib_vfy(dd, fw) > 0)
 		dd->cspec->serdes_first_init_done = 1;
 	return dd->cspec->serdes_first_init_done;
 }
@@ -377,6 +389,7 @@ static void qib_sd_trimdone_monitor(struct qib_devdata *dd,
  */
 int qib_sd7220_init(struct qib_devdata *dd)
 {
+	const struct firmware *fw;
 	int ret = 1; /* default to failure */
 	int first_reset, was_reset;
 
@@ -387,8 +400,15 @@ int qib_sd7220_init(struct qib_devdata *dd)
 		qib_ibsd_reset(dd, 1);
 		qib_sd_trimdone_monitor(dd, "Driver-reload");
 	}
+
+	ret = request_firmware(&fw, SD7220_FW_NAME, &dd->pcidev->dev);
+	if (ret) {
+		qib_dev_err(dd, "Failed to load IB SERDES image\n");
+		goto done;
+	}
+
 	/* Substitute our deduced value for was_reset */
-	ret = qib_ibsd_ucode_loaded(dd->pport);
+	ret = qib_ibsd_ucode_loaded(dd->pport, fw);
 	if (ret < 0)
 		goto bail;
 
@@ -437,13 +457,13 @@ int qib_sd7220_init(struct qib_devdata *dd)
 		int vfy;
 		int trim_done;
 
-		ret = qib_sd7220_ib_load(dd);
+		ret = qib_sd7220_ib_load(dd, fw);
 		if (ret < 0) {
 			qib_dev_err(dd, "Failed to load IB SERDES image\n");
 			goto bail;
 		} else {
 			/* Loaded image, try to verify */
-			vfy = qib_sd7220_ib_vfy(dd);
+			vfy = qib_sd7220_ib_vfy(dd, fw);
 			if (vfy != ret) {
 				qib_dev_err(dd, "SERDES PRAM VFY failed\n");
 				goto bail;
@@ -506,6 +526,8 @@ bail:
 done:
 	/* start relock timer regardless, but start at 1 second */
 	set_7220_relock_poll(dd, -1);
+
+	release_firmware(fw);
 	return ret;
 }
 
@@ -829,8 +851,8 @@ static int qib_sd7220_ram_xfer(struct qib_devdata *dd, int sdnum, u32 loc,
 
 #define PROG_CHUNK 64
 
-int qib_sd7220_prog_ld(struct qib_devdata *dd, int sdnum,
-		       u8 *img, int len, int offset)
+static int qib_sd7220_prog_ld(struct qib_devdata *dd, int sdnum,
+			      const u8 *img, int len, int offset)
 {
 	int cnt, sofar, req;
 
@@ -840,7 +862,7 @@ int qib_sd7220_prog_ld(struct qib_devdata *dd, int sdnum,
 		if (req > PROG_CHUNK)
 			req = PROG_CHUNK;
 		cnt = qib_sd7220_ram_xfer(dd, sdnum, offset + sofar,
-					  img + sofar, req, 0);
+					  (u8 *)img + sofar, req, 0);
 		if (cnt < req) {
 			sofar = -1;
 			break;
@@ -853,8 +875,8 @@ int qib_sd7220_prog_ld(struct qib_devdata *dd, int sdnum,
 #define VFY_CHUNK 64
 #define SD_PRAM_ERROR_LIMIT 42
 
-int qib_sd7220_prog_vfy(struct qib_devdata *dd, int sdnum,
-			const u8 *img, int len, int offset)
+static int qib_sd7220_prog_vfy(struct qib_devdata *dd, int sdnum,
+			       const u8 *img, int len, int offset)
 {
 	int cnt, sofar, req, idx, errors;
 	unsigned char readback[VFY_CHUNK];
@@ -881,6 +903,18 @@ int qib_sd7220_prog_vfy(struct qib_devdata *dd, int sdnum,
 	return errors ? -errors : sofar;
 }
 
+static int
+qib_sd7220_ib_load(struct qib_devdata *dd, const struct firmware *fw)
+{
+	return qib_sd7220_prog_ld(dd, IB_7220_SERDES, fw->data, fw->size, 0);
+}
+
+static int
+qib_sd7220_ib_vfy(struct qib_devdata *dd, const struct firmware *fw)
+{
+	return qib_sd7220_prog_vfy(dd, IB_7220_SERDES, fw->data, fw->size, 0);
+}
+
 /*
  * IRQ not set up at this point in init, so we poll.
  */