In-Reply-To:
This patch series introduces the object allocator driver for the
Freescale Management Complex (fsl-mc) of QorIQ Ls2 SoCs This patch
series is dependent on the patch series drivers/bus: "Freescale
Management Complex bus driver patch series Besides adding the object
allocator functionality".
CHANGE HISTORY
Changes in v2:
- Converted MC portal allocator to use DPMCP objects
The fsl-mc object allocator driver manages "allocatable" fsl-mc
objects such as DPBPs, DPMCPs and DPCONs. It provides services to
other fsl-mc drivers to allocate/deallocate these types of objects.
Signed-off-by: J. German Rivera <[email protected]>
Signed-off-by: Stuart Yoder <[email protected]>
---
Changes in v2:
- Converted MC portal allocator to use DPMCP objects
drivers/bus/fsl-mc/Makefile | 7 +-
drivers/bus/fsl-mc/dpbp.c | 358 ++++++++++++++++++++++++
drivers/bus/fsl-mc/dpmcp-cmd.h | 136 +++++++++
drivers/bus/fsl-mc/dpmcp.c | 308 +++++++++++++++++++++
drivers/bus/fsl-mc/dpmcp.h | 311 +++++++++++++++++++++
drivers/bus/fsl-mc/dprc-driver.c | 104 ++++++-
drivers/bus/fsl-mc/mc-allocator.c | 568 ++++++++++++++++++++++++++++++++++++++
drivers/bus/fsl-mc/mc-bus.c | 2 +-
drivers/bus/fsl-mc/mc-sys.c | 4 +
include/linux/fsl/dpbp-cmd.h | 60 ++++
include/linux/fsl/dpbp.h | 330 ++++++++++++++++++++++
include/linux/fsl/dpcon-cmd.h | 62 +++++
include/linux/fsl/mc-private.h | 61 +++-
include/linux/fsl/mc-sys.h | 6 +
include/linux/fsl/mc.h | 65 +++++
15 files changed, 2366 insertions(+), 16 deletions(-)
create mode 100644 drivers/bus/fsl-mc/dpbp.c
create mode 100644 drivers/bus/fsl-mc/dpmcp-cmd.h
create mode 100644 drivers/bus/fsl-mc/dpmcp.c
create mode 100644 drivers/bus/fsl-mc/dpmcp.h
create mode 100644 drivers/bus/fsl-mc/mc-allocator.c
create mode 100644 include/linux/fsl/dpbp-cmd.h
create mode 100644 include/linux/fsl/dpbp.h
create mode 100644 include/linux/fsl/dpcon-cmd.h
diff --git a/drivers/bus/fsl-mc/Makefile b/drivers/bus/fsl-mc/Makefile
index 424e58e..c052889 100644
--- a/drivers/bus/fsl-mc/Makefile
+++ b/drivers/bus/fsl-mc/Makefile
@@ -5,11 +5,16 @@
#
# This file is released under the GPLv2
#
-obj-$(CONFIG_FSL_MC_BUS) += mc-bus-driver.o
+obj-$(CONFIG_FSL_MC_BUS) += mc-bus-driver.o \
+ mc-allocator-driver.o
mc-bus-driver-objs := mc-bus.o \
mc-sys.o \
+ dpmcp.o \
dprc.o \
dpmng.o \
dprc-driver.o
+mc-allocator-driver-objs := mc-allocator.o \
+ dpbp.o \
+ dpcon.o
diff --git a/drivers/bus/fsl-mc/dpbp.c b/drivers/bus/fsl-mc/dpbp.c
new file mode 100644
index 0000000..703b1ec
--- /dev/null
+++ b/drivers/bus/fsl-mc/dpbp.c
@@ -0,0 +1,358 @@
+/* Copyright 2013-2014 Freescale Semiconductor Inc.
+*
+* Redistribution and use in source and binary forms, with or without
+* modification, are permitted provided that the following conditions are met:
+* * Redistributions of source code must retain the above copyright
+* notice, this list of conditions and the following disclaimer.
+* * Redistributions in binary form must reproduce the above copyright
+* notice, this list of conditions and the following disclaimer in the
+* documentation and/or other materials provided with the distribution.
+* * Neither the name of the above-listed copyright holders nor the
+* names of any contributors may be used to endorse or promote products
+* derived from this software without specific prior written permission.
+*
+*
+* ALTERNATIVELY, this software may be distributed under the terms of the
+* GNU General Public License ("GPL") as published by the Free Software
+* Foundation, either version 2 of that License or (at your option) any
+* later version.
+*
+* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
+* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+* POSSIBILITY OF SUCH DAMAGE.
+*/
+#include <linux/fsl/mc-sys.h>
+#include <linux/fsl/mc-cmd.h>
+#include <linux/fsl/dpbp.h>
+#include <linux/fsl/dpbp-cmd.h>
+
+int dpbp_open(struct fsl_mc_io *mc_io, int dpbp_id, uint16_t *token)
+{
+ struct mc_command cmd = { 0 };
+ int err;
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPBP_CMDID_OPEN,
+ MC_CMD_PRI_LOW, 0);
+ cmd.params[0] |= mc_enc(0, 32, dpbp_id);
+
+ /* send command to mc*/
+ err = mc_send_command(mc_io, &cmd);
+ if (err)
+ return err;
+
+ /* retrieve response parameters */
+ *token = MC_CMD_HDR_READ_TOKEN(cmd.header);
+
+ return err;
+}
+EXPORT_SYMBOL(dpbp_open);
+
+int dpbp_close(struct fsl_mc_io *mc_io, uint16_t token)
+{
+ struct mc_command cmd = { 0 };
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPBP_CMDID_CLOSE, MC_CMD_PRI_HIGH,
+ token);
+
+ /* send command to mc*/
+ return mc_send_command(mc_io, &cmd);
+}
+EXPORT_SYMBOL(dpbp_close);
+
+int dpbp_create(struct fsl_mc_io *mc_io,
+ const struct dpbp_cfg *cfg,
+ uint16_t *token)
+{
+ struct mc_command cmd = { 0 };
+ int err;
+
+ (void)(cfg); /* unused */
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPBP_CMDID_CREATE,
+ MC_CMD_PRI_LOW, 0);
+
+ /* send command to mc*/
+ err = mc_send_command(mc_io, &cmd);
+ if (err)
+ return err;
+
+ /* retrieve response parameters */
+ *token = MC_CMD_HDR_READ_TOKEN(cmd.header);
+
+ return 0;
+}
+
+int dpbp_destroy(struct fsl_mc_io *mc_io, uint16_t token)
+{
+ struct mc_command cmd = { 0 };
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPBP_CMDID_DESTROY,
+ MC_CMD_PRI_LOW, token);
+
+ /* send command to mc*/
+ return mc_send_command(mc_io, &cmd);
+}
+
+int dpbp_enable(struct fsl_mc_io *mc_io, uint16_t token)
+{
+ struct mc_command cmd = { 0 };
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPBP_CMDID_ENABLE, MC_CMD_PRI_LOW,
+ token);
+
+ /* send command to mc*/
+ return mc_send_command(mc_io, &cmd);
+}
+EXPORT_SYMBOL(dpbp_enable);
+
+int dpbp_disable(struct fsl_mc_io *mc_io, uint16_t token)
+{
+ struct mc_command cmd = { 0 };
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPBP_CMDID_DISABLE,
+ MC_CMD_PRI_LOW, token);
+
+ /* send command to mc*/
+ return mc_send_command(mc_io, &cmd);
+}
+EXPORT_SYMBOL(dpbp_disable);
+
+int dpbp_is_enabled(struct fsl_mc_io *mc_io, uint16_t token, int *en)
+{
+ struct mc_command cmd = { 0 };
+ int err;
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPBP_CMDID_IS_ENABLED, MC_CMD_PRI_LOW,
+ token);
+
+ /* send command to mc*/
+ err = mc_send_command(mc_io, &cmd);
+ if (err)
+ return err;
+
+ /* retrieve response parameters */
+ *en = (int)mc_dec(cmd.params[0], 0, 1);
+
+ return 0;
+}
+
+int dpbp_reset(struct fsl_mc_io *mc_io, uint16_t token)
+{
+ struct mc_command cmd = { 0 };
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPBP_CMDID_RESET,
+ MC_CMD_PRI_LOW, token);
+
+ /* send command to mc*/
+ return mc_send_command(mc_io, &cmd);
+}
+
+int dpbp_set_irq(struct fsl_mc_io *mc_io,
+ uint16_t token,
+ uint8_t irq_index,
+ uint64_t irq_paddr,
+ uint32_t irq_val,
+ int user_irq_id)
+{
+ struct mc_command cmd = { 0 };
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPBP_CMDID_SET_IRQ,
+ MC_CMD_PRI_LOW, token);
+ cmd.params[0] |= mc_enc(0, 8, irq_index);
+ cmd.params[0] |= mc_enc(32, 32, irq_val);
+ cmd.params[1] |= mc_enc(0, 64, irq_paddr);
+ cmd.params[2] |= mc_enc(0, 32, user_irq_id);
+
+ /* send command to mc*/
+ return mc_send_command(mc_io, &cmd);
+}
+
+int dpbp_get_irq(struct fsl_mc_io *mc_io,
+ uint16_t token,
+ uint8_t irq_index,
+ int *type,
+ uint64_t *irq_paddr,
+ uint32_t *irq_val,
+ int *user_irq_id)
+{
+ struct mc_command cmd = { 0 };
+ int err;
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPBP_CMDID_GET_IRQ,
+ MC_CMD_PRI_LOW, token);
+ cmd.params[0] |= mc_enc(32, 8, irq_index);
+
+ /* send command to mc*/
+ err = mc_send_command(mc_io, &cmd);
+ if (err)
+ return err;
+
+ /* retrieve response parameters */
+ *irq_val = (uint32_t)mc_dec(cmd.params[0], 0, 32);
+ *irq_paddr = (uint64_t)mc_dec(cmd.params[1], 0, 64);
+ *user_irq_id = (int)mc_dec(cmd.params[2], 0, 32);
+ *type = (int)mc_dec(cmd.params[2], 32, 32);
+ return 0;
+}
+
+int dpbp_set_irq_enable(struct fsl_mc_io *mc_io,
+ uint16_t token,
+ uint8_t irq_index,
+ uint8_t en)
+{
+ struct mc_command cmd = { 0 };
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPBP_CMDID_SET_IRQ_ENABLE,
+ MC_CMD_PRI_LOW, token);
+ cmd.params[0] |= mc_enc(0, 8, en);
+ cmd.params[0] |= mc_enc(32, 8, irq_index);
+
+ /* send command to mc*/
+ return mc_send_command(mc_io, &cmd);
+}
+
+int dpbp_get_irq_enable(struct fsl_mc_io *mc_io,
+ uint16_t token,
+ uint8_t irq_index,
+ uint8_t *en)
+{
+ struct mc_command cmd = { 0 };
+ int err;
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPBP_CMDID_GET_IRQ_ENABLE,
+ MC_CMD_PRI_LOW, token);
+ cmd.params[0] |= mc_enc(32, 8, irq_index);
+
+ /* send command to mc*/
+ err = mc_send_command(mc_io, &cmd);
+ if (err)
+ return err;
+
+ /* retrieve response parameters */
+ *en = (uint8_t)mc_dec(cmd.params[0], 0, 8);
+ return 0;
+}
+
+int dpbp_set_irq_mask(struct fsl_mc_io *mc_io,
+ uint16_t token,
+ uint8_t irq_index,
+ uint32_t mask)
+{
+ struct mc_command cmd = { 0 };
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPBP_CMDID_SET_IRQ_MASK,
+ MC_CMD_PRI_LOW, token);
+ cmd.params[0] |= mc_enc(0, 32, mask);
+ cmd.params[0] |= mc_enc(32, 8, irq_index);
+
+ /* send command to mc*/
+ return mc_send_command(mc_io, &cmd);
+}
+
+int dpbp_get_irq_mask(struct fsl_mc_io *mc_io,
+ uint16_t token,
+ uint8_t irq_index,
+ uint32_t *mask)
+{
+ struct mc_command cmd = { 0 };
+ int err;
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPBP_CMDID_GET_IRQ_MASK,
+ MC_CMD_PRI_LOW, token);
+ cmd.params[0] |= mc_enc(32, 8, irq_index);
+
+ /* send command to mc*/
+ err = mc_send_command(mc_io, &cmd);
+ if (err)
+ return err;
+
+ /* retrieve response parameters */
+ *mask = (uint32_t)mc_dec(cmd.params[0], 0, 32);
+ return 0;
+}
+
+int dpbp_get_irq_status(struct fsl_mc_io *mc_io,
+ uint16_t token,
+ uint8_t irq_index,
+ uint32_t *status)
+{
+ struct mc_command cmd = { 0 };
+ int err;
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPBP_CMDID_GET_IRQ_STATUS,
+ MC_CMD_PRI_LOW, token);
+ cmd.params[0] |= mc_enc(32, 8, irq_index);
+
+ /* send command to mc*/
+ err = mc_send_command(mc_io, &cmd);
+ if (err)
+ return err;
+
+ /* retrieve response parameters */
+ *status = (uint32_t)mc_dec(cmd.params[0], 0, 32);
+ return 0;
+}
+
+int dpbp_clear_irq_status(struct fsl_mc_io *mc_io,
+ uint16_t token,
+ uint8_t irq_index,
+ uint32_t status)
+{
+ struct mc_command cmd = { 0 };
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPBP_CMDID_CLEAR_IRQ_STATUS,
+ MC_CMD_PRI_LOW, token);
+ cmd.params[0] |= mc_enc(0, 32, status);
+ cmd.params[0] |= mc_enc(32, 8, irq_index);
+
+ /* send command to mc*/
+ return mc_send_command(mc_io, &cmd);
+}
+
+int dpbp_get_attributes(struct fsl_mc_io *mc_io,
+ uint16_t token,
+ struct dpbp_attr *attr)
+{
+ struct mc_command cmd = { 0 };
+ int err;
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPBP_CMDID_GET_ATTR,
+ MC_CMD_PRI_LOW, token);
+
+ /* send command to mc*/
+ err = mc_send_command(mc_io, &cmd);
+ if (err)
+ return err;
+
+ /* retrieve response parameters */
+ attr->bpid = (uint16_t)mc_dec(cmd.params[0], 16, 16);
+ attr->id = (int)mc_dec(cmd.params[0], 32, 32);
+ attr->version.major = (uint16_t)mc_dec(cmd.params[1], 0, 16);
+ attr->version.minor = (uint16_t)mc_dec(cmd.params[1], 16, 16);
+ return 0;
+}
+EXPORT_SYMBOL(dpbp_get_attributes);
diff --git a/drivers/bus/fsl-mc/dpmcp-cmd.h b/drivers/bus/fsl-mc/dpmcp-cmd.h
new file mode 100644
index 0000000..57f326b
--- /dev/null
+++ b/drivers/bus/fsl-mc/dpmcp-cmd.h
@@ -0,0 +1,136 @@
+/* Copyright 2013-2015 Freescale Semiconductor Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the name of the above-listed copyright holders nor the
+ * names of any contributors may be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") as published by the Free Software
+ * Foundation, either version 2 of that License or (at your option) any
+ * later version.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef _FSL_DPMCP_CMD_H
+#define _FSL_DPMCP_CMD_H
+
+/* DPMCP Version */
+#define DPMCP_VER_MAJOR 2
+#define DPMCP_VER_MINOR 0
+
+/* Command IDs */
+#define DPMCP_CMDID_CLOSE 0x800
+#define DPMCP_CMDID_OPEN 0x80b
+#define DPMCP_CMDID_CREATE 0x90b
+#define DPMCP_CMDID_DESTROY 0x900
+
+#define DPMCP_CMDID_GET_ATTR 0x004
+#define DPMCP_CMDID_RESET 0x005
+
+#define DPMCP_CMDID_SET_IRQ 0x010
+#define DPMCP_CMDID_GET_IRQ 0x011
+#define DPMCP_CMDID_SET_IRQ_ENABLE 0x012
+#define DPMCP_CMDID_GET_IRQ_ENABLE 0x013
+#define DPMCP_CMDID_SET_IRQ_MASK 0x014
+#define DPMCP_CMDID_GET_IRQ_MASK 0x015
+#define DPMCP_CMDID_GET_IRQ_STATUS 0x016
+#define DPMCP_CMDID_CLEAR_IRQ_STATUS 0x017
+
+/* cmd, param, offset, width, type, arg_name */
+#define DPMCP_CMD_CREATE(cmd, cfg) \
+ MC_CMD_OP(cmd, 0, 0, 32, int, cfg->portal_id)
+
+/* cmd, param, offset, width, type, arg_name */
+#define DPMCP_CMD_SET_IRQ(cmd, irq_index, irq_addr, irq_val, user_irq_id) \
+do { \
+ MC_CMD_OP(cmd, 0, 0, 8, uint8_t, irq_index);\
+ MC_CMD_OP(cmd, 0, 32, 32, uint32_t, irq_val);\
+ MC_CMD_OP(cmd, 1, 0, 64, uint64_t, irq_addr); \
+ MC_CMD_OP(cmd, 2, 0, 32, int, user_irq_id); \
+} while (0)
+
+/* cmd, param, offset, width, type, arg_name */
+#define DPMCP_CMD_GET_IRQ(cmd, irq_index) \
+ MC_CMD_OP(cmd, 0, 32, 8, uint8_t, irq_index)
+
+/* cmd, param, offset, width, type, arg_name */
+#define DPMCP_RSP_GET_IRQ(cmd, type, irq_addr, irq_val, user_irq_id) \
+do { \
+ MC_RSP_OP(cmd, 0, 0, 32, uint32_t, irq_val); \
+ MC_RSP_OP(cmd, 1, 0, 64, uint64_t, irq_addr); \
+ MC_RSP_OP(cmd, 2, 0, 32, int, user_irq_id); \
+ MC_RSP_OP(cmd, 2, 32, 32, int, type); \
+} while (0)
+
+/* cmd, param, offset, width, type, arg_name */
+#define DPMCP_CMD_SET_IRQ_ENABLE(cmd, irq_index, en) \
+do { \
+ MC_CMD_OP(cmd, 0, 0, 8, uint8_t, en); \
+ MC_CMD_OP(cmd, 0, 32, 8, uint8_t, irq_index);\
+} while (0)
+
+/* cmd, param, offset, width, type, arg_name */
+#define DPMCP_CMD_GET_IRQ_ENABLE(cmd, irq_index) \
+ MC_CMD_OP(cmd, 0, 32, 8, uint8_t, irq_index)
+
+/* cmd, param, offset, width, type, arg_name */
+#define DPMCP_RSP_GET_IRQ_ENABLE(cmd, en) \
+ MC_RSP_OP(cmd, 0, 0, 8, uint8_t, en)
+
+/* cmd, param, offset, width, type, arg_name */
+#define DPMCP_CMD_SET_IRQ_MASK(cmd, irq_index, mask) \
+do { \
+ MC_CMD_OP(cmd, 0, 0, 32, uint32_t, mask);\
+ MC_CMD_OP(cmd, 0, 32, 8, uint8_t, irq_index);\
+} while (0)
+
+/* cmd, param, offset, width, type, arg_name */
+#define DPMCP_CMD_GET_IRQ_MASK(cmd, irq_index) \
+ MC_CMD_OP(cmd, 0, 32, 8, uint8_t, irq_index)
+
+/* cmd, param, offset, width, type, arg_name */
+#define DPMCP_RSP_GET_IRQ_MASK(cmd, mask) \
+ MC_RSP_OP(cmd, 0, 0, 32, uint32_t, mask)
+
+/* cmd, param, offset, width, type, arg_name */
+#define DPMCP_CMD_GET_IRQ_STATUS(cmd, irq_index) \
+ MC_CMD_OP(cmd, 0, 32, 8, uint8_t, irq_index)
+
+/* cmd, param, offset, width, type, arg_name */
+#define DPMCP_RSP_GET_IRQ_STATUS(cmd, status) \
+ MC_RSP_OP(cmd, 0, 0, 32, uint32_t, status)
+
+/* cmd, param, offset, width, type, arg_name */
+#define DPMCP_CMD_CLEAR_IRQ_STATUS(cmd, irq_index, status) \
+do { \
+ MC_CMD_OP(cmd, 0, 0, 32, uint32_t, status); \
+ MC_CMD_OP(cmd, 0, 32, 8, uint8_t, irq_index);\
+} while (0)
+
+/* cmd, param, offset, width, type, arg_name */
+#define DPMCP_RSP_GET_ATTRIBUTES(cmd, attr) \
+do { \
+ MC_RSP_OP(cmd, 0, 32, 32, int, attr->id);\
+ MC_RSP_OP(cmd, 1, 0, 16, uint16_t, attr->version.major);\
+ MC_RSP_OP(cmd, 1, 16, 16, uint16_t, attr->version.minor);\
+} while (0)
+
+#endif /* _FSL_DPMCP_CMD_H */
diff --git a/drivers/bus/fsl-mc/dpmcp.c b/drivers/bus/fsl-mc/dpmcp.c
new file mode 100644
index 0000000..b5d2983
--- /dev/null
+++ b/drivers/bus/fsl-mc/dpmcp.c
@@ -0,0 +1,308 @@
+/* Copyright 2013-2015 Freescale Semiconductor Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the name of the above-listed copyright holders nor the
+ * names of any contributors may be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") as published by the Free Software
+ * Foundation, either version 2 of that License or (at your option) any
+ * later version.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <linux/fsl/mc-sys.h>
+#include <linux/fsl/mc-cmd.h>
+#include "dpmcp.h"
+#include "dpmcp-cmd.h"
+
+int dpmcp_open(struct fsl_mc_io *mc_io, int dpmcp_id, uint16_t *token)
+{
+ struct mc_command cmd = { 0 };
+ int err;
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPMCP_CMDID_OPEN,
+ MC_CMD_PRI_LOW, 0);
+ cmd.params[0] |= mc_enc(0, 32, dpmcp_id);
+
+ /* send command to mc*/
+ err = mc_send_command(mc_io, &cmd);
+ if (err)
+ return err;
+
+ /* retrieve response parameters */
+ *token = MC_CMD_HDR_READ_TOKEN(cmd.header);
+
+ return err;
+}
+
+int dpmcp_close(struct fsl_mc_io *mc_io, uint16_t token)
+{
+ struct mc_command cmd = { 0 };
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPMCP_CMDID_CLOSE, MC_CMD_PRI_HIGH,
+ token);
+
+ /* send command to mc*/
+ return mc_send_command(mc_io, &cmd);
+}
+
+int dpmcp_create(struct fsl_mc_io *mc_io,
+ const struct dpmcp_cfg *cfg,
+ uint16_t *token)
+{
+ struct mc_command cmd = { 0 };
+ int err;
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPMCP_CMDID_CREATE,
+ MC_CMD_PRI_LOW, 0);
+ cmd.params[0] |= mc_enc(0, 32, cfg->portal_id);
+
+ /* send command to mc*/
+ err = mc_send_command(mc_io, &cmd);
+ if (err)
+ return err;
+
+ /* retrieve response parameters */
+ *token = MC_CMD_HDR_READ_TOKEN(cmd.header);
+
+ return 0;
+}
+
+int dpmcp_destroy(struct fsl_mc_io *mc_io, uint16_t token)
+{
+ struct mc_command cmd = { 0 };
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPMCP_CMDID_DESTROY,
+ MC_CMD_PRI_LOW, token);
+
+ /* send command to mc*/
+ return mc_send_command(mc_io, &cmd);
+}
+
+int dpmcp_reset(struct fsl_mc_io *mc_io, uint16_t token)
+{
+ struct mc_command cmd = { 0 };
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPMCP_CMDID_RESET,
+ MC_CMD_PRI_LOW, token);
+
+ /* send command to mc*/
+ return mc_send_command(mc_io, &cmd);
+}
+
+int dpmcp_set_irq(struct fsl_mc_io *mc_io,
+ uint16_t token,
+ uint8_t irq_index,
+ uint64_t irq_addr,
+ uint32_t irq_val,
+ int user_irq_id)
+{
+ struct mc_command cmd = { 0 };
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPMCP_CMDID_SET_IRQ,
+ MC_CMD_PRI_LOW, token);
+ cmd.params[0] |= mc_enc(0, 8, irq_index);
+ cmd.params[0] |= mc_enc(32, 32, irq_val);
+ cmd.params[1] |= mc_enc(0, 64, irq_addr);
+ cmd.params[2] |= mc_enc(0, 32, user_irq_id);
+
+ /* send command to mc*/
+ return mc_send_command(mc_io, &cmd);
+}
+
+int dpmcp_get_irq(struct fsl_mc_io *mc_io,
+ uint16_t token,
+ uint8_t irq_index,
+ int *type,
+ uint64_t *irq_addr,
+ uint32_t *irq_val,
+ int *user_irq_id)
+{
+ struct mc_command cmd = { 0 };
+ int err;
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPMCP_CMDID_GET_IRQ,
+ MC_CMD_PRI_LOW, token);
+ cmd.params[0] |= mc_enc(32, 8, irq_index);
+
+ /* send command to mc*/
+ err = mc_send_command(mc_io, &cmd);
+ if (err)
+ return err;
+
+ /* retrieve response parameters */
+ *irq_val = (uint32_t)mc_dec(cmd.params[0], 0, 32);
+ *irq_addr = (uint64_t)mc_dec(cmd.params[1], 0, 64);
+ *user_irq_id = (int)mc_dec(cmd.params[2], 0, 32);
+ *type = (int)mc_dec(cmd.params[2], 32, 32);
+ return 0;
+}
+
+int dpmcp_set_irq_enable(struct fsl_mc_io *mc_io,
+ uint16_t token,
+ uint8_t irq_index,
+ uint8_t en)
+{
+ struct mc_command cmd = { 0 };
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPMCP_CMDID_SET_IRQ_ENABLE,
+ MC_CMD_PRI_LOW, token);
+ cmd.params[0] |= mc_enc(0, 8, en);
+ cmd.params[0] |= mc_enc(32, 8, irq_index);
+
+ /* send command to mc*/
+ return mc_send_command(mc_io, &cmd);
+}
+
+int dpmcp_get_irq_enable(struct fsl_mc_io *mc_io,
+ uint16_t token,
+ uint8_t irq_index,
+ uint8_t *en)
+{
+ struct mc_command cmd = { 0 };
+ int err;
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPMCP_CMDID_GET_IRQ_ENABLE,
+ MC_CMD_PRI_LOW, token);
+ cmd.params[0] |= mc_enc(32, 8, irq_index);
+
+ /* send command to mc*/
+ err = mc_send_command(mc_io, &cmd);
+ if (err)
+ return err;
+
+ /* retrieve response parameters */
+ *en = (uint8_t)mc_dec(cmd.params[0], 0, 8);
+ return 0;
+}
+
+int dpmcp_set_irq_mask(struct fsl_mc_io *mc_io,
+ uint16_t token,
+ uint8_t irq_index,
+ uint32_t mask)
+{
+ struct mc_command cmd = { 0 };
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPMCP_CMDID_SET_IRQ_MASK,
+ MC_CMD_PRI_LOW, token);
+ cmd.params[0] |= mc_enc(0, 32, mask);
+ cmd.params[0] |= mc_enc(32, 8, irq_index);
+
+ /* send command to mc*/
+ return mc_send_command(mc_io, &cmd);
+}
+
+int dpmcp_get_irq_mask(struct fsl_mc_io *mc_io,
+ uint16_t token,
+ uint8_t irq_index,
+ uint32_t *mask)
+{
+ struct mc_command cmd = { 0 };
+ int err;
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPMCP_CMDID_GET_IRQ_MASK,
+ MC_CMD_PRI_LOW, token);
+ cmd.params[0] |= mc_enc(32, 8, irq_index);
+
+ /* send command to mc*/
+ err = mc_send_command(mc_io, &cmd);
+ if (err)
+ return err;
+
+ /* retrieve response parameters */
+ *mask = (uint32_t)mc_dec(cmd.params[0], 0, 32);
+ return 0;
+}
+
+int dpmcp_get_irq_status(struct fsl_mc_io *mc_io,
+ uint16_t token,
+ uint8_t irq_index,
+ uint32_t *status)
+{
+ struct mc_command cmd = { 0 };
+ int err;
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPMCP_CMDID_GET_IRQ_STATUS,
+ MC_CMD_PRI_LOW, token);
+ cmd.params[0] |= mc_enc(32, 8, irq_index);
+
+ /* send command to mc*/
+ err = mc_send_command(mc_io, &cmd);
+ if (err)
+ return err;
+
+ /* retrieve response parameters */
+ *status = (uint32_t)mc_dec(cmd.params[0], 0, 32);
+ return 0;
+}
+
+int dpmcp_clear_irq_status(struct fsl_mc_io *mc_io,
+ uint16_t token,
+ uint8_t irq_index,
+ uint32_t status)
+{
+ struct mc_command cmd = { 0 };
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPMCP_CMDID_CLEAR_IRQ_STATUS,
+ MC_CMD_PRI_LOW, token);
+ cmd.params[0] |= mc_enc(0, 32, status);
+ cmd.params[0] |= mc_enc(32, 8, irq_index);
+
+ /* send command to mc*/
+ return mc_send_command(mc_io, &cmd);
+}
+
+int dpmcp_get_attributes(struct fsl_mc_io *mc_io,
+ uint16_t token,
+ struct dpmcp_attr *attr)
+{
+ struct mc_command cmd = { 0 };
+ int err;
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPMCP_CMDID_GET_ATTR,
+ MC_CMD_PRI_LOW, token);
+
+ /* send command to mc*/
+ err = mc_send_command(mc_io, &cmd);
+ if (err)
+ return err;
+
+ /* retrieve response parameters */
+ attr->id = (int)mc_dec(cmd.params[0], 32, 32);
+ attr->version.major = (uint16_t)mc_dec(cmd.params[1], 0, 16);
+ attr->version.minor = (uint16_t)mc_dec(cmd.params[1], 16, 16);
+ return 0;
+}
diff --git a/drivers/bus/fsl-mc/dpmcp.h b/drivers/bus/fsl-mc/dpmcp.h
new file mode 100644
index 0000000..5e7c219
--- /dev/null
+++ b/drivers/bus/fsl-mc/dpmcp.h
@@ -0,0 +1,311 @@
+/* Copyright 2013-2015 Freescale Semiconductor Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the name of the above-listed copyright holders nor the
+ * names of any contributors may be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") as published by the Free Software
+ * Foundation, either version 2 of that License or (at your option) any
+ * later version.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef __FSL_DPMCP_H
+#define __FSL_DPMCP_H
+
+/* Data Path Management Command Portal API
+ * Contains initialization APIs and runtime control APIs for DPMCP
+ */
+
+struct fsl_mc_io;
+
+/**
+ * dpmcp_open() - Open a control session for the specified object.
+ * @mc_io: Pointer to MC portal's I/O object
+ * @dpmcp_id: DPMCP unique ID
+ * @token: Returned token; use in subsequent API calls
+ *
+ * This function can be used to open a control session for an
+ * already created object; an object may have been declared in
+ * the DPL or by calling the dpmcp_create function.
+ * This function returns a unique authentication token,
+ * associated with the specific object ID and the specific MC
+ * portal; this token must be used in all subsequent commands for
+ * this specific object
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpmcp_open(struct fsl_mc_io *mc_io, int dpmcp_id, uint16_t *token);
+
+/* Get portal ID from pool */
+#define DPMCP_GET_PORTAL_ID_FROM_POOL (-1)
+
+/**
+ * dpmcp_close() - Close the control session of the object
+ * @mc_io: Pointer to MC portal's I/O object
+ * @token: Token of DPMCP object
+ *
+ * After this function is called, no further operations are
+ * allowed on the object without opening a new control session.
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpmcp_close(struct fsl_mc_io *mc_io, uint16_t token);
+
+/**
+ * struct dpmcp_cfg() - Structure representing DPMCP configuration
+ * @portal_id: Portal ID; 'DPMCP_GET_PORTAL_ID_FROM_POOL' to get the portal ID
+ * from pool
+ */
+struct dpmcp_cfg {
+ int portal_id;
+};
+
+/**
+ * dpmcp_create() - Create the DPMCP object.
+ * @mc_io: Pointer to MC portal's I/O object
+ * @cfg: Configuration structure
+ * @token: Returned token; use in subsequent API calls
+ *
+ * Create the DPMCP object, allocate required resources and
+ * perform required initialization.
+ *
+ * The object can be created either by declaring it in the
+ * DPL file, or by calling this function.
+ * This function returns a unique authentication token,
+ * associated with the specific object ID and the specific MC
+ * portal; this token must be used in all subsequent calls to
+ * this specific object. For objects that are created using the
+ * DPL file, call dpmcp_open function to get an authentication
+ * token first.
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpmcp_create(struct fsl_mc_io *mc_io,
+ const struct dpmcp_cfg *cfg,
+ uint16_t *token);
+
+/**
+ * dpmcp_destroy() - Destroy the DPMCP object and release all its resources.
+ * @mc_io: Pointer to MC portal's I/O object
+ * @token: Token of DPMCP object
+ *
+ * Return: '0' on Success; error code otherwise.
+ */
+int dpmcp_destroy(struct fsl_mc_io *mc_io, uint16_t token);
+
+/**
+ * dpmcp_reset() - Reset the DPMCP, returns the object to initial state.
+ * @mc_io: Pointer to MC portal's I/O object
+ * @token: Token of DPMCP object
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpmcp_reset(struct fsl_mc_io *mc_io, uint16_t token);
+
+/* IRQ */
+/*!
+ * @name dpmcp IRQ Index and Events
+ */
+#define DPMCP_IRQ_INDEX 0
+/*!< Irq index */
+#define DPMCP_IRQ_EVENT_CMD_DONE 0x00000001
+/*!< irq event - Indicates that the link state changed */
+/* @} */
+
+/**
+ * dpmcp_set_irq() - Set IRQ information for the DPMCP to trigger an interrupt.
+ * @mc_io: Pointer to MC portal's I/O object
+ * @token: Token of DPMCP object
+ * @irq_index: Identifies the interrupt index to configure
+ * @irq_addr: Address that must be written to
+ * signal a message-based interrupt
+ * @irq_val: Value to write into irq_addr address
+ * @user_irq_id: A user defined number associated with this IRQ
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpmcp_set_irq(struct fsl_mc_io *mc_io,
+ uint16_t token,
+ uint8_t irq_index,
+ uint64_t irq_addr,
+ uint32_t irq_val,
+ int user_irq_id);
+
+/**
+ * dpmcp_get_irq() - Get IRQ information from the DPMCP.
+ * @mc_io: Pointer to MC portal's I/O object
+ * @token: Token of DPMCP object
+ * @irq_index: The interrupt index to configure
+ * @type: Interrupt type: 0 represents message interrupt
+ * type (both irq_addr and irq_val are valid)
+ * @irq_addr: Returned address that must be written to
+ * signal the message-based interrupt
+ * @irq_val: Value to write into irq_addr address
+ * @user_irq_id: A user defined number associated with this IRQ
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpmcp_get_irq(struct fsl_mc_io *mc_io,
+ uint16_t token,
+ uint8_t irq_index,
+ int *type,
+ uint64_t *irq_addr,
+ uint32_t *irq_val,
+ int *user_irq_id);
+
+/**
+ * dpmcp_set_irq_enable() - Set overall interrupt state.
+ * @mc_io: Pointer to MC portal's I/O object
+ * @token: Token of DPMCP object
+ * @irq_index: The interrupt index to configure
+ * @en: Interrupt state - enable = 1, disable = 0
+ *
+ * Allows GPP software to control when interrupts are generated.
+ * Each interrupt can have up to 32 causes. The enable/disable control's the
+ * overall interrupt state. if the interrupt is disabled no causes will cause
+ * an interrupt.
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpmcp_set_irq_enable(struct fsl_mc_io *mc_io,
+ uint16_t token,
+ uint8_t irq_index,
+ uint8_t en);
+
+/**
+ * dpmcp_get_irq_enable() - Get overall interrupt state
+ * @mc_io: Pointer to MC portal's I/O object
+ * @token: Token of DPMCP object
+ * @irq_index: The interrupt index to configure
+ * @en: Returned interrupt state - enable = 1, disable = 0
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpmcp_get_irq_enable(struct fsl_mc_io *mc_io,
+ uint16_t token,
+ uint8_t irq_index,
+ uint8_t *en);
+
+/**
+ * dpmcp_set_irq_mask() - Set interrupt mask.
+ * @mc_io: Pointer to MC portal's I/O object
+ * @token: Token of DPMCP object
+ * @irq_index: The interrupt index to configure
+ * @mask: Event mask to trigger interrupt;
+ * each bit:
+ * 0 = ignore event
+ * 1 = consider event for asserting IRQ
+ *
+ * Every interrupt can have up to 32 causes and the interrupt model supports
+ * masking/unmasking each cause independently
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpmcp_set_irq_mask(struct fsl_mc_io *mc_io,
+ uint16_t token,
+ uint8_t irq_index,
+ uint32_t mask);
+
+/**
+ * dpmcp_get_irq_mask() - Get interrupt mask.
+ * @mc_io: Pointer to MC portal's I/O object
+ * @token: Token of DPMCP object
+ * @irq_index: The interrupt index to configure
+ * @mask: Returned event mask to trigger interrupt
+ *
+ * Every interrupt can have up to 32 causes and the interrupt model supports
+ * masking/unmasking each cause independently
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpmcp_get_irq_mask(struct fsl_mc_io *mc_io,
+ uint16_t token,
+ uint8_t irq_index,
+ uint32_t *mask);
+
+/**
+ * dpmcp_get_irq_status() - Get the current status of any pending interrupts.
+ *
+ * @mc_io: Pointer to MC portal's I/O object
+ * @token: Token of DPMCP object
+ * @irq_index: The interrupt index to configure
+ * @status: Returned interrupts status - one bit per cause:
+ * 0 = no interrupt pending
+ * 1 = interrupt pending
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpmcp_get_irq_status(struct fsl_mc_io *mc_io,
+ uint16_t token,
+ uint8_t irq_index,
+ uint32_t *status);
+
+/**
+ * dpmcp_clear_irq_status() - Clear a pending interrupt's status
+ *
+ * @mc_io: Pointer to MC portal's I/O object
+ * @token: Token of DPMCP object
+ * @irq_index: The interrupt index to configure
+ * @status: Bits to clear (W1C) - one bit per cause:
+ * 0 = don't change
+ * 1 = clear status bit
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpmcp_clear_irq_status(struct fsl_mc_io *mc_io,
+ uint16_t token,
+ uint8_t irq_index,
+ uint32_t status);
+
+/**
+ * struct dpmcp_attr - Structure representing DPMCP attributes
+ * @id: DPMCP object ID
+ * @version: DPMCP version
+ */
+struct dpmcp_attr {
+ int id;
+ /**
+ * struct version - Structure representing DPMCP version
+ * @major: DPMCP major version
+ * @minor: DPMCP minor version
+ */
+ struct {
+ uint16_t major;
+ uint16_t minor;
+ } version;
+};
+
+/**
+ * dpmcp_get_attributes - Retrieve DPMCP attributes.
+ *
+ * @mc_io: Pointer to MC portal's I/O object
+ * @token: Token of DPMCP object
+ * @attr: Returned object's attributes
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpmcp_get_attributes(struct fsl_mc_io *mc_io,
+ uint16_t token,
+ struct dpmcp_attr *attr);
+
+#endif /* __FSL_DPMCP_H */
diff --git a/drivers/bus/fsl-mc/dprc-driver.c b/drivers/bus/fsl-mc/dprc-driver.c
index a231d00..61a405e 100644
--- a/drivers/bus/fsl-mc/dprc-driver.c
+++ b/drivers/bus/fsl-mc/dprc-driver.c
@@ -156,6 +156,85 @@ static void dprc_add_new_devices(struct fsl_mc_device *mc_bus_dev,
}
}
+static void dprc_init_all_resource_pools(struct fsl_mc_device *mc_bus_dev)
+{
+ int pool_type;
+ struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_bus_dev);
+
+ for (pool_type = 0; pool_type < FSL_MC_NUM_POOL_TYPES; pool_type++) {
+ struct fsl_mc_resource_pool *res_pool =
+ &mc_bus->resource_pools[pool_type];
+
+ res_pool->type = pool_type;
+ res_pool->max_count = 0;
+ res_pool->free_count = 0;
+ res_pool->mc_bus = mc_bus;
+ INIT_LIST_HEAD(&res_pool->free_list);
+ mutex_init(&res_pool->mutex);
+ }
+}
+
+static void dprc_cleanup_resource_pool(struct fsl_mc_device *mc_bus_dev,
+ enum fsl_mc_pool_type pool_type)
+{
+ struct fsl_mc_resource *resource;
+ struct fsl_mc_resource *next;
+ struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_bus_dev);
+ struct fsl_mc_resource_pool *res_pool =
+ &mc_bus->resource_pools[pool_type];
+ int free_count = 0;
+
+ WARN_ON(res_pool->type != pool_type);
+ WARN_ON(res_pool->free_count != res_pool->max_count);
+
+ list_for_each_entry_safe(resource, next, &res_pool->free_list, node) {
+ free_count++;
+ WARN_ON(resource->type != res_pool->type);
+ WARN_ON(resource->parent_pool != res_pool);
+ devm_kfree(&mc_bus_dev->dev, resource);
+ }
+
+ WARN_ON(free_count != res_pool->free_count);
+}
+
+static void dprc_cleanup_all_resource_pools(struct fsl_mc_device *mc_bus_dev)
+{
+ int pool_type;
+
+ for (pool_type = 0; pool_type < FSL_MC_NUM_POOL_TYPES; pool_type++)
+ dprc_cleanup_resource_pool(mc_bus_dev, pool_type);
+}
+
+static void reorder_obj_desc_array(struct dprc_obj_desc *obj_desc_array,
+ int num_devs)
+{
+ struct dprc_obj_desc tmp;
+ struct dprc_obj_desc *top_cursor = &obj_desc_array[0];
+ struct dprc_obj_desc *bottom_cursor = &obj_desc_array[num_devs - 1];
+
+ /*
+ * Reorder entries in obj_desc_array so that all allocatable devices
+ * are placed before all non-allocatable devices:
+ *
+ * Loop Invariant: everything before top_cursor is allocatable and
+ * everything after bottom_cursor is non-allocatable.
+ */
+ while (top_cursor < bottom_cursor) {
+ if (FSL_MC_IS_ALLOCATABLE(top_cursor->type)) {
+ top_cursor++;
+ } else {
+ if (FSL_MC_IS_ALLOCATABLE(bottom_cursor->type)) {
+ tmp = *bottom_cursor;
+ *bottom_cursor = *top_cursor;
+ *top_cursor = tmp;
+ top_cursor++;
+ }
+
+ bottom_cursor--;
+ }
+ }
+}
+
/**
* dprc_scan_objects - Discover objects in a DPRC
*
@@ -164,6 +243,14 @@ static void dprc_add_new_devices(struct fsl_mc_device *mc_bus_dev,
* Detects objects added and removed from a DPRC and synchronizes the
* state of the Linux bus driver, MC by adding and removing
* devices accordingly.
+ * Two types of devices can be found in a DPRC: allocatable objects (e.g.,
+ * dpbp, dpmcp) and non-allocatable devices (e.g., dprc, dpni).
+ * All allocatable devices needed to be probed before all non-allocatable
+ * devices, to ensure that device drivers for non-allocatable
+ * devices can allocate any type of allocatable devices.
+ * That is, we need to ensure that the corresponding resource pools are
+ * populated before they can get allocation requests from probe callbacks
+ * of the device drivers for the non-allocatable devices.
*/
int dprc_scan_objects(struct fsl_mc_device *mc_bus_dev)
{
@@ -226,6 +313,8 @@ int dprc_scan_objects(struct fsl_mc_device *mc_bus_dev)
"%d out of %d devices could not be retrieved\n",
dprc_get_obj_failures, num_child_objects);
}
+
+ reorder_obj_desc_array(child_obj_desc_array, num_child_objects);
}
dprc_remove_devices(mc_bus_dev, child_obj_desc_array,
@@ -255,12 +344,20 @@ int dprc_scan_container(struct fsl_mc_device *mc_bus_dev)
int error;
struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_bus_dev);
+ dprc_init_all_resource_pools(mc_bus_dev);
+
/*
* Discover objects in the DPRC:
*/
mutex_lock(&mc_bus->scan_mutex);
error = dprc_scan_objects(mc_bus_dev);
mutex_unlock(&mc_bus->scan_mutex);
+ if (error < 0)
+ goto error;
+
+ return 0;
+error:
+ dprc_cleanup_all_resource_pools(mc_bus_dev);
return error;
}
EXPORT_SYMBOL_GPL(dprc_scan_container);
@@ -272,6 +369,8 @@ EXPORT_SYMBOL_GPL(dprc_scan_container);
*
* It opens the physical DPRC in the MC.
* It scans the DPRC to discover the MC objects contained in it.
+ * It creates the interrupt pool for the MC bus associated with the DPRC.
+ * It configures the interrupts for the DPRC device itself.
*/
static int dprc_probe(struct fsl_mc_device *mc_dev)
{
@@ -295,7 +394,7 @@ static int dprc_probe(struct fsl_mc_device *mc_dev)
error = fsl_create_mc_io(&mc_dev->dev,
mc_dev->regions[0].start,
region_size,
- 0, &mc_dev->mc_io);
+ NULL, 0, &mc_dev->mc_io);
if (error < 0)
return error;
}
@@ -334,6 +433,8 @@ error_cleanup_mc_io:
*
* It removes the DPRC's child objects from Linux (not from the MC) and
* closes the DPRC device in the MC.
+ * It tears down the interrupts that were configured for the DPRC device.
+ * It destroys the interrupt pool associated with this MC bus.
*/
static int dprc_remove(struct fsl_mc_device *mc_dev)
{
@@ -345,6 +446,7 @@ static int dprc_remove(struct fsl_mc_device *mc_dev)
return -EINVAL;
device_for_each_child(&mc_dev->dev, NULL, __fsl_mc_device_remove);
+ dprc_cleanup_all_resource_pools(mc_dev);
error = dprc_close(mc_dev->mc_io, mc_dev->mc_handle);
if (error < 0)
dev_err(&mc_dev->dev, "dprc_close() failed: %d\n", error);
diff --git a/drivers/bus/fsl-mc/mc-allocator.c b/drivers/bus/fsl-mc/mc-allocator.c
new file mode 100644
index 0000000..8168c06
--- /dev/null
+++ b/drivers/bus/fsl-mc/mc-allocator.c
@@ -0,0 +1,568 @@
+/*
+ * Freescale MC object device allocator driver
+ *
+ * Copyright (C) 2013 Freescale Semiconductor, Inc.
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/fsl/mc-private.h>
+#include <linux/fsl/mc-sys.h>
+#include <linux/module.h>
+#include <linux/fsl/dpbp-cmd.h>
+#include <linux/fsl/dpcon-cmd.h>
+#include "dpmcp-cmd.h"
+#include "dpmcp.h"
+
+/**
+ * fsl_mc_resource_pool_add_device - add allocatable device to a resource
+ * pool of a given MC bus
+ *
+ * @mc_bus: pointer to the MC bus
+ * @pool_type: MC bus pool type
+ * @mc_dev: Pointer to allocatable MC object device
+ *
+ * It adds an allocatable MC object device to a container's resource pool of
+ * the given resource type
+ */
+static int __must_check fsl_mc_resource_pool_add_device(struct fsl_mc_bus
+ *mc_bus,
+ enum fsl_mc_pool_type
+ pool_type,
+ struct fsl_mc_device
+ *mc_dev)
+{
+ struct fsl_mc_resource_pool *res_pool;
+ struct fsl_mc_resource *resource;
+ struct fsl_mc_device *mc_bus_dev = &mc_bus->mc_dev;
+ int error = -EINVAL;
+ bool mutex_locked = false;
+
+ if (WARN_ON(pool_type < 0 || pool_type >= FSL_MC_NUM_POOL_TYPES))
+ goto out;
+ if (WARN_ON(!FSL_MC_IS_ALLOCATABLE(mc_dev->obj_desc.type)))
+ goto out;
+ if (WARN_ON(mc_dev->resource))
+ goto out;
+
+ res_pool = &mc_bus->resource_pools[pool_type];
+ if (WARN_ON(res_pool->type != pool_type))
+ goto out;
+ if (WARN_ON(res_pool->mc_bus != mc_bus))
+ goto out;
+
+ mutex_lock(&res_pool->mutex);
+ mutex_locked = true;
+
+ if (WARN_ON(res_pool->max_count < 0))
+ goto out;
+ if (WARN_ON(res_pool->free_count < 0 ||
+ res_pool->free_count > res_pool->max_count))
+ goto out;
+
+ resource = devm_kzalloc(&mc_bus_dev->dev, sizeof(*resource),
+ GFP_KERNEL);
+ if (!resource) {
+ error = -ENOMEM;
+ dev_err(&mc_bus_dev->dev,
+ "Failed to allocate memory for fsl_mc_resource\n");
+ goto out;
+ }
+
+ resource->type = pool_type;
+ resource->id = mc_dev->obj_desc.id;
+ resource->data = mc_dev;
+ resource->parent_pool = res_pool;
+ INIT_LIST_HEAD(&resource->node);
+ list_add_tail(&resource->node, &res_pool->free_list);
+ mc_dev->resource = resource;
+ res_pool->free_count++;
+ res_pool->max_count++;
+ error = 0;
+out:
+ if (mutex_locked)
+ mutex_unlock(&res_pool->mutex);
+
+ return error;
+}
+
+/**
+ * fsl_mc_resource_pool_remove_device - remove an allocatable device from a
+ * resource pool
+ *
+ * @mc_dev: Pointer to allocatable MC object device
+ *
+ * It permanently removes an allocatable MC object device from the resource
+ * pool, the device is currently in, as long as it is in the pool's free list.
+ */
+static int __must_check fsl_mc_resource_pool_remove_device(struct fsl_mc_device
+ *mc_dev)
+{
+ struct fsl_mc_device *mc_bus_dev;
+ struct fsl_mc_bus *mc_bus;
+ struct fsl_mc_resource_pool *res_pool;
+ struct fsl_mc_resource *resource;
+ int error = -EINVAL;
+ bool mutex_locked = false;
+
+ if (WARN_ON(!FSL_MC_IS_ALLOCATABLE(mc_dev->obj_desc.type)))
+ goto out;
+
+ resource = mc_dev->resource;
+ if (WARN_ON(resource->data != mc_dev))
+ goto out;
+
+ mc_bus_dev = to_fsl_mc_device(mc_dev->dev.parent);
+ mc_bus = to_fsl_mc_bus(mc_bus_dev);
+ res_pool = resource->parent_pool;
+ if (WARN_ON(res_pool != &mc_bus->resource_pools[resource->type]))
+ goto out;
+
+ mutex_lock(&res_pool->mutex);
+ mutex_locked = true;
+
+ if (WARN_ON(res_pool->max_count <= 0))
+ goto out;
+ if (WARN_ON(res_pool->free_count <= 0 ||
+ res_pool->free_count > res_pool->max_count))
+ goto out;
+
+ /*
+ * If the device is currently allocated, its resource is not
+ * in the free list and thus, the device cannot be removed.
+ */
+ if (list_empty(&resource->node)) {
+ error = -EBUSY;
+ dev_err(&mc_bus_dev->dev,
+ "Device %s cannot be removed from resource pool\n",
+ dev_name(&mc_dev->dev));
+ goto out;
+ }
+
+ list_del(&resource->node);
+ INIT_LIST_HEAD(&resource->node);
+ res_pool->free_count--;
+ res_pool->max_count--;
+
+ devm_kfree(&mc_bus_dev->dev, resource);
+ mc_dev->resource = NULL;
+ error = 0;
+out:
+ if (mutex_locked)
+ mutex_unlock(&res_pool->mutex);
+
+ return error;
+}
+
+static const char *const fsl_mc_pool_type_strings[] = {
+ [FSL_MC_POOL_DPMCP] = "dpmcp",
+ [FSL_MC_POOL_DPBP] = "dpbp",
+ [FSL_MC_POOL_DPCON] = "dpcon",
+};
+
+static int __must_check object_type_to_pool_type(const char *object_type,
+ enum fsl_mc_pool_type
+ *pool_type)
+{
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(fsl_mc_pool_type_strings); i++) {
+ if (strcmp(object_type, fsl_mc_pool_type_strings[i]) == 0) {
+ *pool_type = i;
+ return 0;
+ }
+ }
+
+ return -EINVAL;
+}
+
+int __must_check fsl_mc_resource_allocate(struct fsl_mc_bus *mc_bus,
+ enum fsl_mc_pool_type pool_type,
+ struct fsl_mc_resource **new_resource)
+{
+ struct fsl_mc_resource_pool *res_pool;
+ struct fsl_mc_resource *resource;
+ struct fsl_mc_device *mc_bus_dev = &mc_bus->mc_dev;
+ int error = -EINVAL;
+ bool mutex_locked = false;
+
+ BUILD_BUG_ON(ARRAY_SIZE(fsl_mc_pool_type_strings) !=
+ FSL_MC_NUM_POOL_TYPES);
+
+ *new_resource = NULL;
+ if (WARN_ON(pool_type < 0 || pool_type >= FSL_MC_NUM_POOL_TYPES))
+ goto error;
+
+ res_pool = &mc_bus->resource_pools[pool_type];
+ if (WARN_ON(res_pool->mc_bus != mc_bus))
+ goto error;
+
+ mutex_lock(&res_pool->mutex);
+ mutex_locked = true;
+ resource = list_first_entry_or_null(&res_pool->free_list,
+ struct fsl_mc_resource, node);
+
+ if (!resource) {
+ WARN_ON(res_pool->free_count != 0);
+ error = -ENXIO;
+ dev_err(&mc_bus_dev->dev,
+ "No more resources of type %s left\n",
+ fsl_mc_pool_type_strings[pool_type]);
+ goto error;
+ }
+
+ if (WARN_ON(resource->type != pool_type))
+ goto error;
+ if (WARN_ON(resource->parent_pool != res_pool))
+ goto error;
+ if (WARN_ON(res_pool->free_count <= 0 ||
+ res_pool->free_count > res_pool->max_count))
+ goto error;
+
+ list_del(&resource->node);
+ INIT_LIST_HEAD(&resource->node);
+
+ res_pool->free_count--;
+ mutex_unlock(&res_pool->mutex);
+ *new_resource = resource;
+ return 0;
+error:
+ if (mutex_locked)
+ mutex_unlock(&res_pool->mutex);
+
+ return error;
+}
+EXPORT_SYMBOL_GPL(fsl_mc_resource_allocate);
+
+void fsl_mc_resource_free(struct fsl_mc_resource *resource)
+{
+ struct fsl_mc_resource_pool *res_pool;
+ bool mutex_locked = false;
+
+ res_pool = resource->parent_pool;
+ if (WARN_ON(resource->type != res_pool->type))
+ goto out;
+
+ mutex_lock(&res_pool->mutex);
+ mutex_locked = true;
+ if (WARN_ON(res_pool->free_count < 0 ||
+ res_pool->free_count >= res_pool->max_count))
+ goto out;
+
+ if (WARN_ON(!list_empty(&resource->node)))
+ goto out;
+
+ list_add_tail(&resource->node, &res_pool->free_list);
+ res_pool->free_count++;
+out:
+ if (mutex_locked)
+ mutex_unlock(&res_pool->mutex);
+}
+EXPORT_SYMBOL_GPL(fsl_mc_resource_free);
+
+/**
+ * fsl_mc_portal_allocate - Allocates an MC portal
+ *
+ * @mc_dev: MC device for which the MC portal is to be allocated
+ * @mc_io_flags: Flags for the fsl_mc_io object that wraps the allocated
+ * MC portal.
+ * @new_mc_io: Pointer to area where the pointer to the fsl_mc_io object
+ * that wraps the allocated MC portal is to be returned
+ *
+ * This function allocates an MC portal from the device's parent DPRC,
+ * from the corresponding MC bus' pool of MC portals and wraps
+ * it in a new fsl_mc_io object. If 'mc_dev' is a DPRC itself, the
+ * portal is allocated from its own MC bus.
+ */
+int __must_check fsl_mc_portal_allocate(struct fsl_mc_device *mc_dev,
+ uint16_t mc_io_flags,
+ struct fsl_mc_io **new_mc_io)
+{
+ struct fsl_mc_device *mc_bus_dev;
+ struct fsl_mc_bus *mc_bus;
+ phys_addr_t mc_portal_phys_addr;
+ size_t mc_portal_size;
+ struct fsl_mc_device *mc_adev;
+ int error = -EINVAL;
+ struct fsl_mc_resource *resource = NULL;
+ struct fsl_mc_io *mc_io = NULL;
+
+ if (mc_dev->flags & FSL_MC_IS_DPRC) {
+ mc_bus_dev = mc_dev;
+ } else {
+ if (WARN_ON(mc_dev->dev.parent->bus != &fsl_mc_bus_type))
+ return error;
+
+ mc_bus_dev = to_fsl_mc_device(mc_dev->dev.parent);
+ }
+
+ mc_bus = to_fsl_mc_bus(mc_bus_dev);
+ *new_mc_io = NULL;
+ error = fsl_mc_resource_allocate(mc_bus, FSL_MC_POOL_DPMCP, &resource);
+ if (error < 0)
+ return error;
+
+ mc_adev = resource->data;
+ if (WARN_ON(!mc_adev))
+ goto error_cleanup_resource;
+
+ if (WARN_ON(mc_adev->obj_desc.region_count == 0))
+ goto error_cleanup_resource;
+
+ mc_portal_phys_addr = mc_adev->regions[0].start;
+ mc_portal_size = mc_adev->regions[0].end -
+ mc_adev->regions[0].start + 1;
+
+ if (WARN_ON(mc_portal_size != mc_bus_dev->mc_io->portal_size))
+ goto error_cleanup_resource;
+
+ error = fsl_create_mc_io(&mc_bus_dev->dev,
+ mc_portal_phys_addr,
+ mc_portal_size, resource,
+ mc_io_flags, &mc_io);
+ if (error < 0)
+ goto error_cleanup_resource;
+
+ *new_mc_io = mc_io;
+ return 0;
+
+error_cleanup_resource:
+ fsl_mc_resource_free(resource);
+ return error;
+}
+EXPORT_SYMBOL_GPL(fsl_mc_portal_allocate);
+
+/**
+ * fsl_mc_portal_free - Returns an MC portal to the pool of free MC portals
+ * of a given MC bus
+ *
+ * @mc_io: Pointer to the fsl_mc_io object that wraps the MC portal to free
+ */
+void fsl_mc_portal_free(struct fsl_mc_io *mc_io)
+{
+ struct fsl_mc_resource *resource;
+
+ resource = mc_io->resource;
+ if (WARN_ON(resource->type != FSL_MC_POOL_DPMCP))
+ return;
+ if (WARN_ON(!resource->data))
+ return;
+
+ fsl_destroy_mc_io(mc_io);
+ fsl_mc_resource_free(resource);
+}
+EXPORT_SYMBOL_GPL(fsl_mc_portal_free);
+
+/**
+ * fsl_mc_portal_reset - Resets the dpmcp object for a given fsl_mc_io object
+ *
+ * @mc_io: Pointer to the fsl_mc_io object that wraps the MC portal to free
+ */
+int fsl_mc_portal_reset(struct fsl_mc_io *mc_io)
+{
+ int error;
+ uint16_t token;
+ struct fsl_mc_resource *resource = mc_io->resource;
+ struct fsl_mc_device *mc_dev = resource->data;
+
+ if (WARN_ON(resource->type != FSL_MC_POOL_DPMCP))
+ return -EINVAL;
+
+ if (WARN_ON(!mc_dev))
+ return -EINVAL;
+
+ error = dpmcp_open(mc_io, mc_dev->obj_desc.id, &token);
+ if (error < 0) {
+ dev_err(&mc_dev->dev, "dpmcp_open() failed: %d\n", error);
+ return error;
+ }
+
+ error = dpmcp_reset(mc_io, token);
+ if (error < 0) {
+ dev_err(&mc_dev->dev, "dpmcp_reset() failed: %d\n", error);
+ return error;
+ }
+
+ error = dpmcp_close(mc_io, token);
+ if (error < 0) {
+ dev_err(&mc_dev->dev, "dpmcp_close() failed: %d\n", error);
+ return error;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(fsl_mc_portal_reset);
+
+/**
+ * fsl_mc_object_allocate - Allocates a MC object device of the given
+ * pool type from a given MC bus
+ *
+ * @mc_dev: MC device for which the MC object device is to be allocated
+ * @pool_type: MC bus resource pool type
+ * @new_mc_dev: Pointer to area where the pointer to the allocated
+ * MC object device is to be returned
+ *
+ * This function allocates a MC object device from the device's parent DPRC,
+ * from the corresponding MC bus' pool of allocatable MC object devices of
+ * the given resource type. mc_dev cannot be a DPRC itself.
+ *
+ * NOTE: pool_type must be different from FSL_MC_POOL_MCP, since MC
+ * portals are allocated using fsl_mc_portal_allocate(), instead of
+ * this function.
+ */
+int __must_check fsl_mc_object_allocate(struct fsl_mc_device *mc_dev,
+ enum fsl_mc_pool_type pool_type,
+ struct fsl_mc_device **new_mc_adev)
+{
+ struct fsl_mc_device *mc_bus_dev;
+ struct fsl_mc_bus *mc_bus;
+ struct fsl_mc_device *mc_adev;
+ int error = -EINVAL;
+ struct fsl_mc_resource *resource = NULL;
+
+ *new_mc_adev = NULL;
+ if (WARN_ON(mc_dev->flags & FSL_MC_IS_DPRC))
+ goto error;
+
+ if (WARN_ON(mc_dev->dev.parent->bus != &fsl_mc_bus_type))
+ goto error;
+
+ if (WARN_ON(pool_type == FSL_MC_POOL_DPMCP))
+ goto error;
+
+ mc_bus_dev = to_fsl_mc_device(mc_dev->dev.parent);
+ mc_bus = to_fsl_mc_bus(mc_bus_dev);
+ error = fsl_mc_resource_allocate(mc_bus, pool_type, &resource);
+ if (error < 0)
+ goto error;
+
+ mc_adev = resource->data;
+ if (WARN_ON(!mc_adev))
+ goto error;
+
+ *new_mc_adev = mc_adev;
+ return 0;
+error:
+ if (resource)
+ fsl_mc_resource_free(resource);
+
+ return error;
+}
+EXPORT_SYMBOL_GPL(fsl_mc_object_allocate);
+
+/**
+ * fsl_mc_object_free - Returns an allocatable MC object device to the
+ * corresponding resource pool of a given MC bus.
+ *
+ * @mc_adev: Pointer to the MC object device
+ */
+void fsl_mc_object_free(struct fsl_mc_device *mc_adev)
+{
+ struct fsl_mc_resource *resource;
+
+ resource = mc_adev->resource;
+ if (WARN_ON(resource->type == FSL_MC_POOL_DPMCP))
+ return;
+ if (WARN_ON(resource->data != mc_adev))
+ return;
+
+ fsl_mc_resource_free(resource);
+}
+EXPORT_SYMBOL_GPL(fsl_mc_object_free);
+
+/**
+ * fsl_mc_allocator_probe - callback invoked when an allocatable device is
+ * being added to the system
+ */
+static int fsl_mc_allocator_probe(struct fsl_mc_device *mc_dev)
+{
+ enum fsl_mc_pool_type pool_type;
+ struct fsl_mc_device *mc_bus_dev;
+ struct fsl_mc_bus *mc_bus;
+ int error = -EINVAL;
+
+ if (WARN_ON(!FSL_MC_IS_ALLOCATABLE(mc_dev->obj_desc.type)))
+ goto error;
+
+ mc_bus_dev = to_fsl_mc_device(mc_dev->dev.parent);
+ if (WARN_ON(mc_bus_dev->dev.bus != &fsl_mc_bus_type))
+ goto error;
+
+ mc_bus = to_fsl_mc_bus(mc_bus_dev);
+ error = object_type_to_pool_type(mc_dev->obj_desc.type, &pool_type);
+ if (error < 0)
+ goto error;
+
+ error = fsl_mc_resource_pool_add_device(mc_bus, pool_type, mc_dev);
+ if (error < 0)
+ goto error;
+
+ dev_info(&mc_dev->dev,
+ "Allocatable MC object device bound to fsl_mc_allocator driver");
+ return 0;
+error:
+
+ return error;
+}
+
+/**
+ * fsl_mc_allocator_remove - callback invoked when an allocatable device is
+ * being removed from the system
+ */
+static int fsl_mc_allocator_remove(struct fsl_mc_device *mc_dev)
+{
+ int error = -EINVAL;
+
+ if (WARN_ON(!FSL_MC_IS_ALLOCATABLE(mc_dev->obj_desc.type)))
+ goto out;
+
+ error = fsl_mc_resource_pool_remove_device(mc_dev);
+ if (error < 0)
+ goto out;
+
+ dev_info(&mc_dev->dev, "Allocatable MC object device bound to driver");
+ error = 0;
+out:
+ return error;
+}
+
+static const struct fsl_mc_device_match_id match_id_table[] = {
+ {
+ .vendor = FSL_MC_VENDOR_FREESCALE,
+ .obj_type = "dpbp",
+ .ver_major = DPBP_VER_MAJOR,
+ .ver_minor = DPBP_VER_MINOR
+ },
+ {
+ .vendor = FSL_MC_VENDOR_FREESCALE,
+ .obj_type = "dpmcp",
+ .ver_major = DPMCP_VER_MAJOR,
+ .ver_minor = DPMCP_VER_MINOR
+ },
+ {
+ .vendor = FSL_MC_VENDOR_FREESCALE,
+ .obj_type = "dpcon",
+ .ver_major = DPCON_VER_MAJOR,
+ .ver_minor = DPCON_VER_MINOR
+ },
+ {.vendor = 0x0},
+};
+
+static struct fsl_mc_driver fsl_mc_allocator_driver = {
+ .driver = {
+ .name = "fsl_mc_allocator",
+ .owner = THIS_MODULE,
+ .pm = NULL,
+ },
+ .match_id_table = match_id_table,
+ .probe = fsl_mc_allocator_probe,
+ .remove = fsl_mc_allocator_remove,
+};
+
+module_fsl_mc_driver(fsl_mc_allocator_driver);
+
+MODULE_AUTHOR("Freescale Semiconductor Inc.");
+MODULE_DESCRIPTION("Freescale's MC object device allocator");
+MODULE_LICENSE("GPL");
diff --git a/drivers/bus/fsl-mc/mc-bus.c b/drivers/bus/fsl-mc/mc-bus.c
index f4dd466..5656c2d 100644
--- a/drivers/bus/fsl-mc/mc-bus.c
+++ b/drivers/bus/fsl-mc/mc-bus.c
@@ -607,7 +607,7 @@ static int fsl_mc_bus_probe(struct platform_device *pdev)
mc_portal_phys_addr = res.start;
mc_portal_size = resource_size(&res);
error = fsl_create_mc_io(&pdev->dev, mc_portal_phys_addr,
- mc_portal_size, 0, &mc_io);
+ mc_portal_size, NULL, 0, &mc_io);
if (error < 0)
return error;
diff --git a/drivers/bus/fsl-mc/mc-sys.c b/drivers/bus/fsl-mc/mc-sys.c
index 4476287..a5050ef 100644
--- a/drivers/bus/fsl-mc/mc-sys.c
+++ b/drivers/bus/fsl-mc/mc-sys.c
@@ -60,6 +60,8 @@
* @dev: device to be associated with the MC I/O object
* @mc_portal_phys_addr: physical address of the MC portal to use
* @mc_portal_size: size in bytes of the MC portal
+ * @resource: Pointer to MC bus object allocator resource associated
+ * with this MC I/O object or NULL if none.
* @flags: flags for the new MC I/O object
* @new_mc_io: Area to return pointer to newly created MC I/O object
*
@@ -68,6 +70,7 @@
int __must_check fsl_create_mc_io(struct device *dev,
phys_addr_t mc_portal_phys_addr,
uint32_t mc_portal_size,
+ struct fsl_mc_resource *resource,
uint32_t flags, struct fsl_mc_io **new_mc_io)
{
struct fsl_mc_io *mc_io;
@@ -82,6 +85,7 @@ int __must_check fsl_create_mc_io(struct device *dev,
mc_io->flags = flags;
mc_io->portal_phys_addr = mc_portal_phys_addr;
mc_io->portal_size = mc_portal_size;
+ mc_io->resource = resource;
res = devm_request_mem_region(dev,
mc_portal_phys_addr,
mc_portal_size,
diff --git a/include/linux/fsl/dpbp-cmd.h b/include/linux/fsl/dpbp-cmd.h
new file mode 100644
index 0000000..1fd70a21
--- /dev/null
+++ b/include/linux/fsl/dpbp-cmd.h
@@ -0,0 +1,60 @@
+/* Copyright 2013-2014 Freescale Semiconductor Inc.
+*
+* Redistribution and use in source and binary forms, with or without
+* modification, are permitted provided that the following conditions are met:
+* * Redistributions of source code must retain the above copyright
+* notice, this list of conditions and the following disclaimer.
+* * Redistributions in binary form must reproduce the above copyright
+* notice, this list of conditions and the following disclaimer in the
+* documentation and/or other materials provided with the distribution.
+* * Neither the name of the above-listed copyright holders nor the
+* names of any contributors may be used to endorse or promote products
+* derived from this software without specific prior written permission.
+*
+*
+* ALTERNATIVELY, this software may be distributed under the terms of the
+* GNU General Public License ("GPL") as published by the Free Software
+* Foundation, either version 2 of that License or (at your option) any
+* later version.
+*
+* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
+* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+* POSSIBILITY OF SUCH DAMAGE.
+*/
+#ifndef _FSL_DPBP_CMD_H
+#define _FSL_DPBP_CMD_H
+
+/* DPBP Version */
+#define DPBP_VER_MAJOR 2
+#define DPBP_VER_MINOR 0
+
+/* Command IDs */
+#define DPBP_CMDID_CLOSE 0x800
+#define DPBP_CMDID_OPEN 0x804
+#define DPBP_CMDID_CREATE 0x904
+#define DPBP_CMDID_DESTROY 0x900
+
+#define DPBP_CMDID_ENABLE 0x002
+#define DPBP_CMDID_DISABLE 0x003
+#define DPBP_CMDID_GET_ATTR 0x004
+#define DPBP_CMDID_RESET 0x005
+#define DPBP_CMDID_IS_ENABLED 0x006
+
+#define DPBP_CMDID_SET_IRQ 0x010
+#define DPBP_CMDID_GET_IRQ 0x011
+#define DPBP_CMDID_SET_IRQ_ENABLE 0x012
+#define DPBP_CMDID_GET_IRQ_ENABLE 0x013
+#define DPBP_CMDID_SET_IRQ_MASK 0x014
+#define DPBP_CMDID_GET_IRQ_MASK 0x015
+#define DPBP_CMDID_GET_IRQ_STATUS 0x016
+#define DPBP_CMDID_CLEAR_IRQ_STATUS 0x017
+
+#endif /* _FSL_DPBP_CMD_H */
diff --git a/include/linux/fsl/dpbp.h b/include/linux/fsl/dpbp.h
new file mode 100644
index 0000000..5f3c8e7
--- /dev/null
+++ b/include/linux/fsl/dpbp.h
@@ -0,0 +1,330 @@
+/* Copyright 2013-2015 Freescale Semiconductor Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the name of the above-listed copyright holders nor the
+ * names of any contributors may be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") as published by the Free Software
+ * Foundation, either version 2 of that License or (at your option) any
+ * later version.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef __FSL_DPBP_H
+#define __FSL_DPBP_H
+
+/* Data Path Buffer Pool API
+ * Contains initialization APIs and runtime control APIs for DPBP
+ */
+
+struct fsl_mc_io;
+
+/**
+ * dpbp_open() - Open a control session for the specified object.
+ * @mc_io: Pointer to MC portal's I/O object
+ * @dpbp_id: DPBP unique ID
+ * @token: Returned token; use in subsequent API calls
+ *
+ * This function can be used to open a control session for an
+ * already created object; an object may have been declared in
+ * the DPL or by calling the dpbp_create function.
+ * This function returns a unique authentication token,
+ * associated with the specific object ID and the specific MC
+ * portal; this token must be used in all subsequent commands for
+ * this specific object
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpbp_open(struct fsl_mc_io *mc_io, int dpbp_id, uint16_t *token);
+
+/**
+ * dpbp_close() - Close the control session of the object
+ * @mc_io: Pointer to MC portal's I/O object
+ * @token: Token of DPBP object
+ *
+ * After this function is called, no further operations are
+ * allowed on the object without opening a new control session.
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpbp_close(struct fsl_mc_io *mc_io, uint16_t token);
+
+/**
+ * struct dpbp_cfg() - Structure representing DPBP configuration
+ * @options: place holder
+ */
+struct dpbp_cfg {
+ uint32_t options;
+};
+
+/**
+ * dpbp_create() - Create the DPBP object.
+ * @mc_io: Pointer to MC portal's I/O object
+ * @cfg: Configuration structure
+ * @token: Returned token; use in subsequent API calls
+ *
+ * Create the DPBP object, allocate required resources and
+ * perform required initialization.
+ *
+ * The object can be created either by declaring it in the
+ * DPL file, or by calling this function.
+ * This function returns a unique authentication token,
+ * associated with the specific object ID and the specific MC
+ * portal; this token must be used in all subsequent calls to
+ * this specific object. For objects that are created using the
+ * DPL file, call dpbp_open function to get an authentication
+ * token first.
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpbp_create(struct fsl_mc_io *mc_io,
+ const struct dpbp_cfg *cfg,
+ uint16_t *token);
+
+/**
+ * dpbp_destroy() - Destroy the DPBP object and release all its resources.
+ * @mc_io: Pointer to MC portal's I/O object
+ * @token: Token of DPBP object
+ *
+ * Return: '0' on Success; error code otherwise.
+ */
+int dpbp_destroy(struct fsl_mc_io *mc_io, uint16_t token);
+
+/**
+ * dpbp_enable() - Enable the DPBP.
+ * @mc_io: Pointer to MC portal's I/O object
+ * @token: Token of DPBP object
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpbp_enable(struct fsl_mc_io *mc_io, uint16_t token);
+
+/**
+ * dpbp_disable() - Disable the DPBP.
+ * @mc_io: Pointer to MC portal's I/O object
+ * @token: Token of DPBP object
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpbp_disable(struct fsl_mc_io *mc_io, uint16_t token);
+
+/**
+ * dpbp_is_enabled() - Check if the DPBP is enabled.
+ * @mc_io: Pointer to MC portal's I/O object
+ * @token: Token of DPBP object
+ * @en: Returns '1' if object is enabled; '0' otherwise
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpbp_is_enabled(struct fsl_mc_io *mc_io, uint16_t token, int *en);
+
+/**
+ * dpbp_reset() - Reset the DPBP, returns the object to initial state.
+ * @mc_io: Pointer to MC portal's I/O object
+ * @token: Token of DPBP object
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpbp_reset(struct fsl_mc_io *mc_io, uint16_t token);
+
+/**
+ * dpbp_set_irq() - Set IRQ information for the DPBP to trigger an interrupt.
+ * @mc_io: Pointer to MC portal's I/O object
+ * @token: Token of DPBP object
+ * @irq_index: Identifies the interrupt index to configure
+ * @irq_addr: Address that must be written to
+ * signal a message-based interrupt
+ * @irq_val: Value to write into irq_addr address
+ * @user_irq_id: A user defined number associated with this IRQ
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpbp_set_irq(struct fsl_mc_io *mc_io,
+ uint16_t token,
+ uint8_t irq_index,
+ uint64_t irq_addr,
+ uint32_t irq_val,
+ int user_irq_id);
+
+/**
+ * dpbp_get_irq() - Get IRQ information from the DPBP.
+ * @mc_io: Pointer to MC portal's I/O object
+ * @token: Token of DPBP object
+ * @irq_index: The interrupt index to configure
+ * @type: Interrupt type: 0 represents message interrupt
+ * type (both irq_addr and irq_val are valid)
+ * @irq_addr: Returned address that must be written to
+ * signal the message-based interrupt
+ * @irq_val: Value to write into irq_addr address
+ * @user_irq_id: A user defined number associated with this IRQ
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpbp_get_irq(struct fsl_mc_io *mc_io,
+ uint16_t token,
+ uint8_t irq_index,
+ int *type,
+ uint64_t *irq_addr,
+ uint32_t *irq_val,
+ int *user_irq_id);
+
+/**
+ * dpbp_set_irq_enable() - Set overall interrupt state.
+ * @mc_io: Pointer to MC portal's I/O object
+ * @token: Token of DPBP object
+ * @irq_index: The interrupt index to configure
+ * @en: Interrupt state - enable = 1, disable = 0
+ *
+ * Allows GPP software to control when interrupts are generated.
+ * Each interrupt can have up to 32 causes. The enable/disable control's the
+ * overall interrupt state. if the interrupt is disabled no causes will cause
+ * an interrupt.
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpbp_set_irq_enable(struct fsl_mc_io *mc_io,
+ uint16_t token,
+ uint8_t irq_index,
+ uint8_t en);
+
+/**
+ * dpbp_get_irq_enable() - Get overall interrupt state
+ * @mc_io: Pointer to MC portal's I/O object
+ * @token: Token of DPBP object
+ * @irq_index: The interrupt index to configure
+ * @en: Returned interrupt state - enable = 1, disable = 0
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpbp_get_irq_enable(struct fsl_mc_io *mc_io,
+ uint16_t token,
+ uint8_t irq_index,
+ uint8_t *en);
+
+/**
+ * dpbp_set_irq_mask() - Set interrupt mask.
+ * @mc_io: Pointer to MC portal's I/O object
+ * @token: Token of DPBP object
+ * @irq_index: The interrupt index to configure
+ * @mask: Event mask to trigger interrupt;
+ * each bit:
+ * 0 = ignore event
+ * 1 = consider event for asserting IRQ
+ *
+ * Every interrupt can have up to 32 causes and the interrupt model supports
+ * masking/unmasking each cause independently
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpbp_set_irq_mask(struct fsl_mc_io *mc_io,
+ uint16_t token,
+ uint8_t irq_index,
+ uint32_t mask);
+
+/**
+ * dpbp_get_irq_mask() - Get interrupt mask.
+ * @mc_io: Pointer to MC portal's I/O object
+ * @token: Token of DPBP object
+ * @irq_index: The interrupt index to configure
+ * @mask: Returned event mask to trigger interrupt
+ *
+ * Every interrupt can have up to 32 causes and the interrupt model supports
+ * masking/unmasking each cause independently
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpbp_get_irq_mask(struct fsl_mc_io *mc_io,
+ uint16_t token,
+ uint8_t irq_index,
+ uint32_t *mask);
+
+/**
+ * dpbp_get_irq_status() - Get the current status of any pending interrupts.
+ *
+ * @mc_io: Pointer to MC portal's I/O object
+ * @token: Token of DPBP object
+ * @irq_index: The interrupt index to configure
+ * @status: Returned interrupts status - one bit per cause:
+ * 0 = no interrupt pending
+ * 1 = interrupt pending
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpbp_get_irq_status(struct fsl_mc_io *mc_io,
+ uint16_t token,
+ uint8_t irq_index,
+ uint32_t *status);
+
+/**
+ * dpbp_clear_irq_status() - Clear a pending interrupt's status
+ *
+ * @mc_io: Pointer to MC portal's I/O object
+ * @token: Token of DPBP object
+ * @irq_index: The interrupt index to configure
+ * @status: Bits to clear (W1C) - one bit per cause:
+ * 0 = don't change
+ * 1 = clear status bit
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpbp_clear_irq_status(struct fsl_mc_io *mc_io,
+ uint16_t token,
+ uint8_t irq_index,
+ uint32_t status);
+
+/**
+ * struct dpbp_attr - Structure representing DPBP attributes
+ * @id: DPBP object ID
+ * @version: DPBP version
+ * @bpid: Hardware buffer pool ID; should be used as an argument in
+ * acquire/release operations on buffers
+ */
+struct dpbp_attr {
+ int id;
+ /**
+ * struct version - Structure representing DPBP version
+ * @major: DPBP major version
+ * @minor: DPBP minor version
+ */
+ struct {
+ uint16_t major;
+ uint16_t minor;
+ } version;
+ uint16_t bpid;
+};
+
+/**
+ * dpbp_get_attributes - Retrieve DPBP attributes.
+ *
+ * @mc_io: Pointer to MC portal's I/O object
+ * @token: Token of DPBP object
+ * @attr: Returned object's attributes
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpbp_get_attributes(struct fsl_mc_io *mc_io,
+ uint16_t token,
+ struct dpbp_attr *attr);
+
+/** @} */
+
+#endif /* __FSL_DPBP_H */
diff --git a/include/linux/fsl/dpcon-cmd.h b/include/linux/fsl/dpcon-cmd.h
new file mode 100644
index 0000000..c878d33
--- /dev/null
+++ b/include/linux/fsl/dpcon-cmd.h
@@ -0,0 +1,62 @@
+/* Copyright 2013-2015 Freescale Semiconductor Inc.
+*
+* Redistribution and use in source and binary forms, with or without
+* modification, are permitted provided that the following conditions are met:
+* * Redistributions of source code must retain the above copyright
+* notice, this list of conditions and the following disclaimer.
+* * Redistributions in binary form must reproduce the above copyright
+* notice, this list of conditions and the following disclaimer in the
+* documentation and/or other materials provided with the distribution.
+* * Neither the name of the above-listed copyright holders nor the
+* names of any contributors may be used to endorse or promote products
+* derived from this software without specific prior written permission.
+*
+*
+* ALTERNATIVELY, this software may be distributed under the terms of the
+* GNU General Public License ("GPL") as published by the Free Software
+* Foundation, either version 2 of that License or (at your option) any
+* later version.
+*
+* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
+* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+* POSSIBILITY OF SUCH DAMAGE.
+*/
+#ifndef _FSL_DPCON_CMD_H
+#define _FSL_DPCON_CMD_H
+
+/* DPCON Version */
+#define DPCON_VER_MAJOR 2
+#define DPCON_VER_MINOR 0
+
+/* Command IDs */
+#define DPCON_CMDID_CLOSE 0x800
+#define DPCON_CMDID_OPEN 0x808
+#define DPCON_CMDID_CREATE 0x908
+#define DPCON_CMDID_DESTROY 0x900
+
+#define DPCON_CMDID_ENABLE 0x002
+#define DPCON_CMDID_DISABLE 0x003
+#define DPCON_CMDID_GET_ATTR 0x004
+#define DPCON_CMDID_RESET 0x005
+#define DPCON_CMDID_IS_ENABLED 0x006
+
+#define DPCON_CMDID_SET_IRQ 0x010
+#define DPCON_CMDID_GET_IRQ 0x011
+#define DPCON_CMDID_SET_IRQ_ENABLE 0x012
+#define DPCON_CMDID_GET_IRQ_ENABLE 0x013
+#define DPCON_CMDID_SET_IRQ_MASK 0x014
+#define DPCON_CMDID_GET_IRQ_MASK 0x015
+#define DPCON_CMDID_GET_IRQ_STATUS 0x016
+#define DPCON_CMDID_CLEAR_IRQ_STATUS 0x017
+
+#define DPCON_CMDID_SET_NOTIFICATION 0x100
+
+#endif /* _FSL_DPCON_CMD_H */
diff --git a/include/linux/fsl/mc-private.h b/include/linux/fsl/mc-private.h
index 920d8f3..98551a0 100644
--- a/include/linux/fsl/mc-private.h
+++ b/include/linux/fsl/mc-private.h
@@ -21,6 +21,11 @@
(strcmp((_mc_dev)->obj_desc.type, (_obj_desc)->type) == 0 && \
(_mc_dev)->obj_desc.id == (_obj_desc)->id)
+#define FSL_MC_IS_ALLOCATABLE(_obj_type) \
+ (strcmp(_obj_type, "dpbp") == 0 || \
+ strcmp(_obj_type, "dpmcp") == 0 || \
+ strcmp(_obj_type, "dpcon") == 0)
+
/**
* struct fsl_mc - Private data of a "fsl,qoriq-mc" platform device
* @root_mc_bus_dev: MC object device representing the root DPRC
@@ -33,19 +38,6 @@ struct fsl_mc {
};
/**
- * struct fsl_mc_bus - logical bus that corresponds to a physical DPRC
- * @mc_dev: fsl-mc device for the bus device itself.
- * @scan_mutex: Serializes bus scanning
- */
-struct fsl_mc_bus {
- struct fsl_mc_device mc_dev;
- struct mutex scan_mutex; /* serializes bus scanning */
-};
-
-#define to_fsl_mc_bus(_mc_dev) \
- container_of(_mc_dev, struct fsl_mc_bus, mc_dev)
-
-/**
* struct fsl_mc_addr_translation_range - bus to system address translation
* range
* @start_mc_addr: Start MC address of the range being translated
@@ -59,6 +51,42 @@ struct fsl_mc_addr_translation_range {
phys_addr_t start_phys_addr;
};
+/**
+ * struct fsl_mc_resource_pool - Pool of MC resources of a given
+ * type
+ * @type: type of resources in the pool
+ * @max_count: maximum number of resources in the pool
+ * @free_count: number of free resources in the pool
+ * @mutex: mutex to serialize access to the pool's free list
+ * @free_list: anchor node of list of free resources in the pool
+ * @mc_bus: pointer to the MC bus that owns this resource pool
+ */
+struct fsl_mc_resource_pool {
+ enum fsl_mc_pool_type type;
+ int16_t max_count;
+ int16_t free_count;
+ struct mutex mutex; /* serializes access to free_list */
+ struct list_head free_list;
+ struct fsl_mc_bus *mc_bus;
+};
+
+/**
+ * struct fsl_mc_bus - logical bus that corresponds to a physical DPRC
+ * @mc_dev: fsl-mc device for the bus device itself.
+ * @resource_pools: array of resource pools (one pool per resource type)
+ * for this MC bus. These resources represent allocatable entities
+ * from the physical DPRC.
+ * @scan_mutex: Serializes bus scanning
+ */
+struct fsl_mc_bus {
+ struct fsl_mc_device mc_dev;
+ struct fsl_mc_resource_pool resource_pools[FSL_MC_NUM_POOL_TYPES];
+ struct mutex scan_mutex; /* serializes bus scanning */
+};
+
+#define to_fsl_mc_bus(_mc_dev) \
+ container_of(_mc_dev, struct fsl_mc_bus, mc_dev)
+
int __must_check fsl_mc_device_add(struct dprc_obj_desc *obj_desc,
struct fsl_mc_io *mc_io,
struct device *parent_dev,
@@ -74,4 +102,11 @@ int __init dprc_driver_init(void);
void __exit dprc_driver_exit(void);
+int __must_check fsl_mc_resource_allocate(struct fsl_mc_bus *mc_bus,
+ enum fsl_mc_pool_type pool_type,
+ struct fsl_mc_resource
+ **new_resource);
+
+void fsl_mc_resource_free(struct fsl_mc_resource *resource);
+
#endif /* _FSL_MC_PRIVATE_H_ */
diff --git a/include/linux/fsl/mc-sys.h b/include/linux/fsl/mc-sys.h
index abfd6a2..cb3b5a2 100644
--- a/include/linux/fsl/mc-sys.h
+++ b/include/linux/fsl/mc-sys.h
@@ -40,6 +40,7 @@
#include <linux/io.h>
#include <linux/dma-mapping.h>
+struct fsl_mc_resource;
struct mc_command;
/**
@@ -49,6 +50,9 @@ struct mc_command;
* @portal_size: MC command portal size in bytes
* @portal_phys_addr: MC command portal physical address
* @portal_virt_addr: MC command portal virtual address
+ * @resource: generic resource associated with the MC portal if
+ * the MC portal came from a resource pool, or NULL if the MC portal
+ * is permanently bound to a device (e.g., a DPRC)
*/
struct fsl_mc_io {
struct device *dev;
@@ -56,11 +60,13 @@ struct fsl_mc_io {
uint32_t portal_size;
phys_addr_t portal_phys_addr;
void __iomem *portal_virt_addr;
+ struct fsl_mc_resource *resource;
};
int __must_check fsl_create_mc_io(struct device *dev,
phys_addr_t mc_portal_phys_addr,
uint32_t mc_portal_size,
+ struct fsl_mc_resource *resource,
uint32_t flags, struct fsl_mc_io **new_mc_io);
void fsl_destroy_mc_io(struct fsl_mc_io *mc_io);
diff --git a/include/linux/fsl/mc.h b/include/linux/fsl/mc.h
index 3a62cd5..1cc8488 100644
--- a/include/linux/fsl/mc.h
+++ b/include/linux/fsl/mc.h
@@ -66,6 +66,44 @@ struct fsl_mc_device_match_id {
};
/**
+ * enum fsl_mc_pool_type - Types of allocatable MC bus resources
+ *
+ * Entries in these enum are used as indices in the array of resource
+ * pools of an fsl_mc_bus object.
+ */
+enum fsl_mc_pool_type {
+ FSL_MC_POOL_DPMCP = 0x0, /* corresponds to "dpmcp" in the MC */
+ FSL_MC_POOL_DPBP, /* corresponds to "dpbp" in the MC */
+ FSL_MC_POOL_DPCON, /* corresponds to "dpcon" in the MC */
+
+ /*
+ * NOTE: New resource pool types must be added before this entry
+ */
+ FSL_MC_NUM_POOL_TYPES
+};
+
+/**
+ * struct fsl_mc_resource - MC generic resource
+ * @type: type of resource
+ * @id: unique MC resource Id within the resources of the same type
+ * @data: pointer to resource-specific data if the resource is currently
+ * allocated, or NULL if the resource is not currently allocated.
+ * @parent_pool: pointer to the parent resource pool from which this
+ * resource is allocated from.
+ * @node: Node in the free list of the corresponding resource pool
+ *
+ * NOTE: This structure is to be embedded as a field of specific
+ * MC resource structures.
+ */
+struct fsl_mc_resource {
+ enum fsl_mc_pool_type type;
+ int32_t id;
+ void *data;
+ struct fsl_mc_resource_pool *parent_pool;
+ struct list_head node;
+};
+
+/**
* Bit masks for a MC object device (struct fsl_mc_device) flags
*/
#define FSL_MC_IS_DPRC 0x0001
@@ -86,6 +124,7 @@ struct fsl_mc_device_match_id {
* NULL if none.
* @obj_desc: MC description of the DPAA device
* @regions: pointer to array of MMIO region entries
+ * @resource: generic resource associated with this MC object device, if any.
*
* Generic device object for MC object devices that are "attached" to a
* MC bus.
@@ -95,6 +134,17 @@ struct fsl_mc_device_match_id {
* - The SMMU notifier callback gets invoked after device_add() has been
* called for an MC object device, but before the device-specific probe
* callback gets called.
+ * - DP_OBJ_DPRC objects are the only MC objects that have built-in MC
+ * portals. For all other MC objects, their device drivers are responsible for
+ * allocating MC portals for them by calling fsl_mc_portal_allocate().
+ * - Some types of MC objects (e.g., DP_OBJ_DPBP, DP_OBJ_DPCON) are
+ * treated as resources that can be allocated/deallocated from the
+ * corresponding resource pool in the object's parent DPRC, using the
+ * fsl_mc_object_allocate()/fsl_mc_object_free() functions. These MC objects
+ * are known as "allocatable" objects. For them, the corresponding
+ * fsl_mc_device's 'resource' points to the associated resource object.
+ * For MC objects that are not allocatable (e.g., DP_OBJ_DPRC, DP_OBJ_DPNI),
+ * 'resource' is NULL.
*/
struct fsl_mc_device {
struct device dev;
@@ -105,6 +155,7 @@ struct fsl_mc_device {
struct fsl_mc_io *mc_io;
struct dprc_obj_desc obj_desc;
struct resource *regions;
+ struct fsl_mc_resource *resource;
};
#define to_fsl_mc_device(_dev) \
@@ -131,6 +182,20 @@ int __must_check __fsl_mc_driver_register(struct fsl_mc_driver *fsl_mc_driver,
void fsl_mc_driver_unregister(struct fsl_mc_driver *driver);
+int __must_check fsl_mc_portal_allocate(struct fsl_mc_device *mc_dev,
+ uint16_t mc_io_flags,
+ struct fsl_mc_io **new_mc_io);
+
+void fsl_mc_portal_free(struct fsl_mc_io *mc_io);
+
+int fsl_mc_portal_reset(struct fsl_mc_io *mc_io);
+
+int __must_check fsl_mc_object_allocate(struct fsl_mc_device *mc_dev,
+ enum fsl_mc_pool_type pool_type,
+ struct fsl_mc_device **new_mc_adev);
+
+void fsl_mc_object_free(struct fsl_mc_device *mc_adev);
+
extern struct bus_type fsl_mc_bus_type;
#endif /* _FSL_MC_H_ */
--
2.3.0
On 24.02.15 23:50, J. German Rivera wrote:
> The fsl-mc object allocator driver manages "allocatable" fsl-mc
> objects such as DPBPs, DPMCPs and DPCONs. It provides services to
I'd recommend to explain what these abbreviations mean. It's
ridiculously hard to remember what they are about. So please put their
full name at least into the patch description and into the headers of
their respective handling files.
Also, can we maybe split the patches into the minimal set required to
get one driver working? I hate to see lots of functions land in upstream
that are never called from anywhere. At the end of the day, I care about
vertical coverage, not horizontal. All of your patches so far are
horizontal.
So please pick one driver, choose the subset required to make bus
enumeration, DPRC handling and the few objects required for that one
driver work and then let's try to push it upstream.
Once that's done we can easily extend the interface incrementally with
every other new driver from that point on.
Alex
On 24.02.15 23:50, J. German Rivera wrote:
> The fsl-mc object allocator driver manages "allocatable" fsl-mc
> objects such as DPBPs, DPMCPs and DPCONs. It provides services to
> other fsl-mc drivers to allocate/deallocate these types of objects.
Oh sorry, what I forgot to mention in the other mail was that some times
a bit of ASCII art in Documentation/ works miracles. For people not
directly involved in DPAA development, it's incredibly hard to grasp all
the connections between different things. It's up to you to make them
obvious :).
Alex