* [RFC PATCH 1/1] drivers/bus: fsl-mc object allocator driver
2015-01-17 1:38 [RFC PATCH 0/1] drivers/bus: Freescale Management Complex object allocator driver J. German Rivera
@ 2015-01-17 1:38 ` J. German Rivera
0 siblings, 0 replies; 2+ messages in thread
From: J. German Rivera @ 2015-01-17 1:38 UTC (permalink / raw)
To: gregkh, arnd, linux-kernel
Cc: stuart.yoder, Kim.Phillips, scottwood, agraf, bhamciu1, R89243,
Geoff.Thorpe, bhupesh.sharma, nir.erez, richard.schmitt,
J. German Rivera
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 <German.Rivera@freescale.com>
Signed-off-by: Stuart Yoder <stuart.yoder@freescale.com>
---
drivers/bus/fsl-mc/Makefile | 6 +-
drivers/bus/fsl-mc/dpbp.c | 358 ++++++++++++++++++++++++
drivers/bus/fsl-mc/dpmcp-cmd.h | 137 +++++++++
drivers/bus/fsl-mc/dpmcp.c | 309 +++++++++++++++++++++
drivers/bus/fsl-mc/dpmcp.h | 309 +++++++++++++++++++++
drivers/bus/fsl-mc/dprc-driver.c | 212 +++++++++++++-
drivers/bus/fsl-mc/mc-allocator.c | 568 ++++++++++++++++++++++++++++++++++++++
drivers/bus/fsl-mc/mc-bus.c | 56 +++-
drivers/bus/fsl-mc/mc-sys.c | 2 +
include/linux/fsl/dpbp-cmd.h | 60 ++++
include/linux/fsl/dpbp.h | 346 +++++++++++++++++++++++
include/linux/fsl/dpcon-cmd.h | 62 +++++
include/linux/fsl/mc-private.h | 41 +++
include/linux/fsl/mc-sys.h | 6 +
include/linux/fsl/mc.h | 63 +++++
15 files changed, 2518 insertions(+), 17 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..3079045 100644
--- a/drivers/bus/fsl-mc/Makefile
+++ b/drivers/bus/fsl-mc/Makefile
@@ -5,7 +5,8 @@
#
# 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 \
@@ -13,3 +14,6 @@ mc-bus-driver-objs := mc-bus.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..cc63915
--- /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_AUTHID(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_AUTHID(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..8e17c63
--- /dev/null
+++ b/drivers/bus/fsl-mc/dpmcp-cmd.h
@@ -0,0 +1,137 @@
+/* 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 1
+#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, 0, 32, int, attr->portal_id);\
+ 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..ecea9cf
--- /dev/null
+++ b/drivers/bus/fsl-mc/dpmcp.c
@@ -0,0 +1,309 @@
+/* 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->portal_id = (int)mc_dec(cmd.params[0], 0, 32);
+ 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..5308508
--- /dev/null
+++ b/drivers/bus/fsl-mc/dpmcp.h
@@ -0,0 +1,309 @@
+/* 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);
+
+/**
+ * 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
+ */
+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
+ * @portal_id: Portal ID
+ * @version: DPMCP version
+ */
+struct dpmcp_attr {
+ int id;
+ int portal_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 5d07e30..caec8c1 100644
--- a/drivers/bus/fsl-mc/dprc-driver.c
+++ b/drivers/bus/fsl-mc/dprc-driver.c
@@ -176,7 +176,8 @@ static void dprc_add_new_devices(struct fsl_mc_device *mc_bus_dev,
error = fsl_create_mc_io(&mc_bus_dev->dev,
region_desc.base_paddr,
- region_desc.size, 0, &mc_io);
+ region_desc.size,
+ NULL, 0, &mc_io);
if (error < 0)
continue;
}
@@ -192,6 +193,181 @@ 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);
+ }
+}
+
+/**
+ * dprc_scan_resources - Scan a physical DPRC for resources of the given
+ * type
+ *
+ * @mc_bus_dev: pointer to the fsl-mc device that represents the DPRC
+ * @pool_type: MC bus resource pool type
+ * @mc_res_type: MC resource type
+ *
+ * Populates the DPRC device's pool of MC resources of the given
+ * type, with the resources discovered in the physical DPRC.
+ */
+static int dprc_scan_resources(struct fsl_mc_device *mc_bus_dev,
+ enum fsl_mc_pool_type pool_type,
+ char *mc_res_type)
+{
+ int error = -EINVAL;
+ struct dprc_res_ids_range_desc range_desc;
+ struct fsl_mc_resource *resource;
+ struct fsl_mc_resource *next;
+ int res_count;
+ int free_count = 0;
+ 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];
+
+ if (WARN_ON(res_pool->max_count != 0))
+ goto error;
+
+ error = dprc_get_res_count(mc_bus_dev->mc_io, mc_bus_dev->mc_handle,
+ mc_res_type, &res_count);
+ if (error < 0) {
+ dev_err(&mc_bus_dev->dev, "dprc_get_res_count() failed: %d\n",
+ error);
+ goto error;
+ }
+
+ if (WARN_ON(res_count < 0)) {
+ error = -EINVAL;
+ goto error;
+ }
+
+ if (res_count == 0)
+ goto out;
+
+ res_pool->max_count = res_count;
+ memset(&range_desc, 0, sizeof(struct dprc_res_ids_range_desc));
+ do {
+ int id;
+
+ error = dprc_get_res_ids(mc_bus_dev->mc_io,
+ mc_bus_dev->mc_handle,
+ mc_res_type, &range_desc);
+ if (error < 0) {
+ dev_err(&mc_bus_dev->dev,
+ "dprc_get_res_ids() failed: %d\n", error);
+ goto error;
+ }
+
+ for (id = range_desc.base_id; id <= range_desc.last_id; id++) {
+ resource = devm_kzalloc(&mc_bus_dev->dev,
+ sizeof(*resource),
+ GFP_KERNEL);
+ if (!resource) {
+ error = -ENOMEM;
+ goto error;
+ }
+
+ resource->type = res_pool->type;
+ resource->id = id;
+ resource->data = NULL;
+ resource->parent_pool = res_pool;
+ INIT_LIST_HEAD(&resource->node);
+ list_add_tail(&resource->node, &res_pool->free_list);
+ free_count++;
+ }
+ } while (free_count < res_pool->max_count &&
+ range_desc.iter_status != DPRC_ITER_STATUS_LAST);
+
+ res_pool->free_count = free_count;
+out:
+ return 0;
+error:
+
+ if (free_count != 0) {
+ list_for_each_entry_safe(resource, next, &res_pool->free_list,
+ node) {
+ devm_kfree(&mc_bus_dev->dev, resource);
+ free_count--;
+ }
+
+ WARN_ON(free_count != 0);
+ }
+
+ return error;
+}
+
+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
*
@@ -200,6 +376,14 @@ 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 (e.g., DP_DEV_DPBP)
+ * and non-allocatable (e.g., DP_DEV_DPRC, DP_DEV_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)
{
@@ -262,6 +446,8 @@ 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,
@@ -288,7 +474,28 @@ EXPORT_SYMBOL_GPL(dprc_scan_objects);
*/
int dprc_scan_container(struct fsl_mc_device *mc_bus_dev)
{
- return dprc_scan_objects(mc_bus_dev);
+ int error = -EINVAL;
+
+ dprc_init_all_resource_pools(mc_bus_dev);
+
+ /*
+ * Discover free MC portals in the DPRC:
+ */
+ error = dprc_scan_resources(mc_bus_dev, FSL_MC_POOL_MCP, "mcp");
+ if (error < 0)
+ goto error;
+
+ /*
+ * Discover objects in the DPRC:
+ */
+ error = dprc_scan_objects(mc_bus_dev);
+ if (error < 0)
+ goto error;
+
+ return 0;
+error:
+ dprc_cleanup_all_resource_pools(mc_bus_dev);
+ return error;
}
EXPORT_SYMBOL_GPL(dprc_scan_container);
@@ -344,6 +551,7 @@ 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..3d48f4a
--- /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)
+{
+ 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;
+
+ 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 1967807..d91ef4a 100644
--- a/drivers/bus/fsl-mc/mc-bus.c
+++ b/drivers/bus/fsl-mc/mc-bus.c
@@ -269,6 +269,7 @@ int fsl_mc_device_add(struct dprc_obj_desc *obj_desc,
{
int error;
struct fsl_mc_device *mc_dev = NULL;
+ struct fsl_mc_bus *mc_bus = NULL;
struct fsl_mc_device *parent_mc_dev;
if (parent_dev->bus == &fsl_mc_bus_type)
@@ -276,17 +277,28 @@ int fsl_mc_device_add(struct dprc_obj_desc *obj_desc,
else
parent_mc_dev = NULL;
- /*
- * DPRC devices must have a dedicated MC portal
- */
- if (WARN_ON(strcmp(obj_desc->type, "dprc") == 0 && !mc_io))
- return -EINVAL;
+ if (strcmp(obj_desc->type, "dprc") == 0) {
+ /*
+ * DPRC devices must have a dedicated MC portal
+ */
+ if (WARN_ON(!mc_io))
+ return -EINVAL;
- mc_dev = kmem_cache_zalloc(mc_dev_cache, GFP_KERNEL);
- if (!mc_dev) {
- dev_err(parent_dev,
- "No memory to allocate fsl_mc_device\n");
- return -ENOMEM;
+ /*
+ * Allocate an MC bus device object:
+ */
+ mc_bus = devm_kzalloc(parent_dev, sizeof(*mc_bus), GFP_KERNEL);
+ if (!mc_bus)
+ return -ENOMEM;
+
+ mc_dev = &mc_bus->mc_dev;
+ } else {
+ /*
+ * Allocate a regular fsl_mc_device object:
+ */
+ mc_dev = kmem_cache_zalloc(mc_dev_cache, GFP_KERNEL);
+ if (!mc_dev)
+ return -ENOMEM;
}
mc_dev->obj_desc = *obj_desc;
@@ -365,7 +377,11 @@ int fsl_mc_device_add(struct dprc_obj_desc *obj_desc,
error_cleanup_dev:
kfree(mc_dev->regions);
- kmem_cache_free(mc_dev_cache, mc_dev);
+ if (mc_bus)
+ devm_kfree(parent_dev, mc_bus);
+ else
+ kmem_cache_free(mc_dev_cache, mc_dev);
+
return error;
}
EXPORT_SYMBOL_GPL(fsl_mc_device_add);
@@ -378,6 +394,8 @@ EXPORT_SYMBOL_GPL(fsl_mc_device_add);
*/
void fsl_mc_device_remove(struct fsl_mc_device *mc_dev)
{
+ struct fsl_mc_bus *mc_bus = NULL;
+
kfree(mc_dev->regions);
/*
@@ -387,13 +405,23 @@ void fsl_mc_device_remove(struct fsl_mc_device *mc_dev)
put_device(&mc_dev->dev);
if (strcmp(mc_dev->obj_desc.type, "dprc") == 0) {
- fsl_destroy_mc_io(mc_dev->mc_io);
+ struct fsl_mc_io *mc_io = mc_dev->mc_io;
+
+ mc_bus = to_fsl_mc_bus(mc_dev);
+ if (!mc_io->resource)
+ fsl_destroy_mc_io(mc_io);
+ else
+ fsl_mc_portal_free(mc_io);
+
if (&mc_dev->dev == fsl_mc_bus_type.dev_root)
fsl_mc_bus_type.dev_root = NULL;
}
mc_dev->mc_io = NULL;
- kmem_cache_free(mc_dev_cache, mc_dev);
+ if (mc_bus)
+ devm_kfree(mc_dev->dev.parent, mc_bus);
+ else
+ kmem_cache_free(mc_dev_cache, mc_dev);
}
EXPORT_SYMBOL_GPL(fsl_mc_device_remove);
@@ -440,7 +468,7 @@ 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..c5e91db 100644
--- a/drivers/bus/fsl-mc/mc-sys.c
+++ b/drivers/bus/fsl-mc/mc-sys.c
@@ -68,6 +68,7 @@
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 +83,7 @@ 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..f9c56a6
--- /dev/null
+++ b/include/linux/fsl/dpbp.h
@@ -0,0 +1,346 @@
+/* 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.
+*/
+/*
+ * dpbp.h
+ * Data Path Buffer Pool API
+ */
+#ifndef __FSL_DPBP_H
+#define __FSL_DPBP_H
+
+/*
+ * grp_dpbp Data Path Buffer Pool API
+ *
+ * Contains initialization APIs and runtime control APIs for DPBP
+ *
+ */
+
+struct fsl_mc_io;
+
+/*
+ * Open a control session for the specified object
+ *
+ * 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.
+ *
+ * mc_io Pointer to MC portal's I/O object
+ * dpbp_id DPBP unique ID
+ * token Returned token; use in subsequent API calls
+ *
+ * returns '0' on Success; Error code otherwise.
+ */
+int dpbp_open(struct fsl_mc_io *mc_io, int dpbp_id, uint16_t *token);
+
+/*
+ * Close the control session of the object
+ *
+ * After this function is called, no further operations are
+ * allowed on the object without opening a new control session.
+ *
+ * mc_io Pointer to MC portal's I/O object
+ * token Token of DPBP object
+ *
+ * returns '0' on Success; Error code otherwise.
+ */
+int dpbp_close(struct fsl_mc_io *mc_io, uint16_t token);
+
+/*
+ * Structure representing DPBP configuration
+ */
+struct dpbp_cfg {
+ uint32_t options; /* place holder */
+};
+
+/*
+ * 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.
+ *
+ * mc_io Pointer to MC portal's I/O object
+ * cfg Configuration structure
+ * token Returned token; use in subsequent API calls
+ *
+ * returns '0' on Success; Error code otherwise.
+ */
+int dpbp_create(struct fsl_mc_io *mc_io,
+ const struct dpbp_cfg *cfg,
+ uint16_t *token);
+
+/*
+ * Destroy the DPBP object and release all its resources.
+ *
+ * mc_io Pointer to MC portal's I/O object
+ * token Token of DPBP object
+ *
+ * returns '0' on Success; error code otherwise.
+ */
+int dpbp_destroy(struct fsl_mc_io *mc_io, uint16_t token);
+
+/*
+ * Enable the DPBP.
+ *
+ * mc_io Pointer to MC portal's I/O object
+ * token Token of DPBP object
+ *
+ * returns '0' on Success; Error code otherwise.
+ */
+int dpbp_enable(struct fsl_mc_io *mc_io, uint16_t token);
+
+/*
+ * Disable the DPBP.
+ *
+ * mc_io Pointer to MC portal's I/O object
+ * token Token of DPBP object
+ *
+ * returns '0' on Success; Error code otherwise.
+ */
+int dpbp_disable(struct fsl_mc_io *mc_io, uint16_t token);
+
+/*
+ * 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
+ *
+ * returns '0' on Success; Error code otherwise.
+ */
+int dpbp_is_enabled(struct fsl_mc_io *mc_io, uint16_t token, int *en);
+
+/*
+ * Reset the DPBP, returns the object to initial state.
+ *
+ * mc_io Pointer to MC portal's I/O object
+ * token Token of DPBP object
+ *
+ * returns '0' on Success; Error code otherwise.
+ */
+int dpbp_reset(struct fsl_mc_io *mc_io, uint16_t token);
+
+/*
+ * 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
+ *
+ * returns '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);
+
+/*
+ * 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 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
+ *
+ * returns '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);
+
+/*
+ * Set overall interrupt state.
+ *
+ * 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.
+ *
+ * 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
+ *
+ * returns '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);
+
+/*
+ * 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 Interrupt state - enable = 1, disable = 0
+ *
+ * returns '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);
+
+/*
+ * Set interrupt mask.
+ *
+ * Every interrupt can have up to 32 causes and the interrupt model supports
+ * masking/unmasking each cause independently
+ *
+ * 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
+ *
+ * returns '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);
+
+/*
+ * Get interrupt mask.
+ *
+ * Every interrupt can have up to 32 causes and the interrupt model supports
+ * masking/unmasking each cause independently
+ *
+ * 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
+ *
+ * returns '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);
+
+/*
+ * 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 Interrupts status - one bit per cause:
+ * 0 = no interrupt pending
+ * 1 = interrupt pending
+ *
+ * returns '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);
+
+/*
+ * 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
+ *
+ * returns '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);
+
+/*
+ * Structure representing DPBP attributes
+ */
+struct dpbp_attr {
+ /* DPBP object id */
+ int id;
+ /* DPBP version */
+ struct {
+ /* DPBP major version */
+ uint16_t major;
+ /* DPBP minor version */
+ uint16_t minor;
+ } version;
+ /*
+ * Hardware buffer pool ID; should be used as an argument in
+ * acquire/release operations on buffers
+ */
+ uint16_t bpid;
+};
+
+/*
+ * Retrieve DPBP attributes.
+ *
+ * mc_io Pointer to MC portal's I/O object
+ * token Token of DPBP object
+ * attr Object's attributes
+ *
+ * returns '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..48e7a09
--- /dev/null
+++ b/include/linux/fsl/dpcon-cmd.h
@@ -0,0 +1,62 @@
+/* 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_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 431a0b1..4d4996d 100644
--- a/include/linux/fsl/mc-private.h
+++ b/include/linux/fsl/mc-private.h
@@ -25,6 +25,40 @@
(strcmp(_obj_type, "dpbp") == 0 || \
strcmp(_obj_type, "dpcon") == 0)
+/**
+ * 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 correspods 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.
+ */
+struct fsl_mc_bus {
+ struct fsl_mc_device mc_dev;
+ struct fsl_mc_resource_pool resource_pools[FSL_MC_NUM_POOL_TYPES];
+};
+
+#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,
@@ -40,4 +74,11 @@ 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 5d89d1bf..8bb0310 100644
--- a/include/linux/fsl/mc.h
+++ b/include/linux/fsl/mc.h
@@ -67,6 +67,44 @@ 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_dprc object.
+ */
+enum fsl_mc_pool_type {
+ FSL_MC_POOL_MCP = 0x0, /* corresponds to "mcpid" 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
@@ -87,6 +125,7 @@ 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.
@@ -96,6 +135,17 @@ 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;
@@ -106,6 +156,7 @@ 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) \
@@ -132,6 +183,18 @@ 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 __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_ */
--
2.2.2
^ permalink raw reply [flat|nested] 2+ messages in thread