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From 653898b483e5448084b15214a8c20959b418dbe7 Mon Sep 17 00:00:00 2001
From: Itai Katz <itai.katz@nxp.com>
Date: Mon, 11 Apr 2016 11:56:05 -0500
Subject: [PATCH 174/226] staging: fsl-mc: add dprc version check
The dprc driver supports dprc version 5.0 and above.
This patch adds the code to check the version.
Signed-off-by: Itai Katz <itai.katz@nxp.com>
(Stuart: resolved merge conflicts, split dpseci quirk into separate patch)
Signed-off-by: Stuart Yoder <stuart.yoder@nxp.com>
Acked-by: German Rivera <german.rivera@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/staging/fsl-mc/bus/dprc-cmd.h | 6 +++---
drivers/staging/fsl-mc/bus/dprc-driver.c | 19 +++++++++++++++++++
drivers/staging/fsl-mc/bus/mc-bus.c | 1 +
drivers/staging/fsl-mc/include/mc-private.h | 2 ++
4 files changed, 25 insertions(+), 3 deletions(-)
--- a/drivers/staging/fsl-mc/bus/dprc-cmd.h
+++ b/drivers/staging/fsl-mc/bus/dprc-cmd.h
@@ -40,9 +40,9 @@
#ifndef _FSL_DPRC_CMD_H
#define _FSL_DPRC_CMD_H
-/* DPRC Version */
-#define DPRC_VER_MAJOR 5
-#define DPRC_VER_MINOR 1
+/* Minimal supported DPRC Version */
+#define DPRC_MIN_VER_MAJOR 5
+#define DPRC_MIN_VER_MINOR 0
/* Command IDs */
#define DPRC_CMDID_CLOSE 0x800
--- a/drivers/staging/fsl-mc/bus/dprc-driver.c
+++ b/drivers/staging/fsl-mc/bus/dprc-driver.c
@@ -693,6 +693,25 @@ static int dprc_probe(struct fsl_mc_devi
goto error_cleanup_msi_domain;
}
+ error = dprc_get_attributes(mc_dev->mc_io, 0, mc_dev->mc_handle,
+ &mc_bus->dprc_attr);
+ if (error < 0) {
+ dev_err(&mc_dev->dev, "dprc_get_attributes() failed: %d\n",
+ error);
+ goto error_cleanup_open;
+ }
+
+ if (mc_bus->dprc_attr.version.major < DPRC_MIN_VER_MAJOR ||
+ (mc_bus->dprc_attr.version.major == DPRC_MIN_VER_MAJOR &&
+ mc_bus->dprc_attr.version.minor < DPRC_MIN_VER_MINOR)) {
+ dev_err(&mc_dev->dev,
+ "ERROR: DPRC version %d.%d not supported\n",
+ mc_bus->dprc_attr.version.major,
+ mc_bus->dprc_attr.version.minor);
+ error = -ENOTSUPP;
+ goto error_cleanup_open;
+ }
+
mutex_init(&mc_bus->scan_mutex);
/*
--- a/drivers/staging/fsl-mc/bus/mc-bus.c
+++ b/drivers/staging/fsl-mc/bus/mc-bus.c
@@ -745,6 +745,7 @@ static int fsl_mc_bus_probe(struct platf
goto error_cleanup_mc_io;
}
+ memset(&obj_desc, 0, sizeof(struct dprc_obj_desc));
error = get_dprc_version(mc_io, container_id,
&obj_desc.ver_major, &obj_desc.ver_minor);
if (error < 0)
--- a/drivers/staging/fsl-mc/include/mc-private.h
+++ b/drivers/staging/fsl-mc/include/mc-private.h
@@ -94,12 +94,14 @@ struct fsl_mc_resource_pool {
* from the physical DPRC.
* @irq_resources: Pointer to array of IRQ objects for the IRQ pool
* @scan_mutex: Serializes bus scanning
+ * @dprc_attr: DPRC attributes
*/
struct fsl_mc_bus {
struct fsl_mc_device mc_dev;
struct fsl_mc_resource_pool resource_pools[FSL_MC_NUM_POOL_TYPES];
struct fsl_mc_device_irq *irq_resources;
struct mutex scan_mutex; /* serializes bus scanning */
+ struct dprc_attributes dprc_attr;
};
#define to_fsl_mc_bus(_mc_dev) \
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