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From: Shreyansh Jain <shreyansh.jain@nxp.com>
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CC: <thomas.monjalon@6wind.com>, <bruce.richardson@intel.com>,
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Subject: [dpdk-dev] [PATCH v3 06/33] bus/fslmc: introduce mc object functions
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From: Hemant Agrawal <hemant.agrawal@nxp.com>
This patch intoduces the DPAA2 MC(Management complex Driver).
This is a minimal set of low level functions to send and
receive commands to the fsl-mc. It includes support for basic
management commands and commands to manipulate MC objects.
This is common to be used by various DPAA2 PMDs. e.g.net, crypto
and other drivers.
This is a low level library also used in kernel.
Signed-off-by: Cristian Sovaiala <cristian.sovaiala@nxp.com>
Signed-off-by: Hemant Agrawal <hemant.agrawal@nxp.com>
---
drivers/bus/fslmc/Makefile | 7 ++
drivers/bus/fslmc/mc/fsl_mc_cmd.h | 231 ++++++++++++++++++++++++++++++++++++++
drivers/bus/fslmc/mc/fsl_mc_sys.h | 98 ++++++++++++++++
drivers/bus/fslmc/mc/mc_sys.c | 107 ++++++++++++++++++
4 files changed, 443 insertions(+)
create mode 100644 drivers/bus/fslmc/mc/fsl_mc_cmd.h
create mode 100644 drivers/bus/fslmc/mc/fsl_mc_sys.h
create mode 100644 drivers/bus/fslmc/mc/mc_sys.c
diff --git a/drivers/bus/fslmc/Makefile b/drivers/bus/fslmc/Makefile
index c4f22ed..21e9f17 100644
--- a/drivers/bus/fslmc/Makefile
+++ b/drivers/bus/fslmc/Makefile
@@ -37,6 +37,10 @@ LIB = librte_pmd_fslmcbus.a
CFLAGS += -O3
CFLAGS += $(WERROR_FLAGS)
+CFLAGS += "-Wno-strict-aliasing"
+
+CFLAGS += -I$(RTE_SDK)/drivers/bus/fslmc
+CFLAGS += -I$(RTE_SDK)/drivers/bus/fslmc/mc
# versioning export map
EXPORT_MAP := rte_pmd_fslmcbus_version.map
@@ -44,6 +48,9 @@ EXPORT_MAP := rte_pmd_fslmcbus_version.map
# library version
LIBABIVER := 1
+SRCS-$(CONFIG_RTE_LIBRTE_FSLMC_BUS) += \
+ mc/mc_sys.c
+
SRCS-$(CONFIG_RTE_LIBRTE_FSLMC_BUS) += fslmc_bus.c
# library dependencies
diff --git a/drivers/bus/fslmc/mc/fsl_mc_cmd.h b/drivers/bus/fslmc/mc/fsl_mc_cmd.h
new file mode 100644
index 0000000..cbd3995
--- /dev/null
+++ b/drivers/bus/fslmc/mc/fsl_mc_cmd.h
@@ -0,0 +1,231 @@
+/* Copyright 2013-2016 Freescale Semiconductor Inc.
+ * Copyright (c) 2016 NXP.
+ *
+ * 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_MC_CMD_H
+#define __FSL_MC_CMD_H
+
+#define MC_CMD_NUM_OF_PARAMS 7
+
+#define MAKE_UMASK64(_width) \
+ ((uint64_t)((_width) < 64 ? ((uint64_t)1 << (_width)) - 1 : \
+ (uint64_t)-1))
+
+static inline uint64_t mc_enc(int lsoffset, int width, uint64_t val)
+{
+ return (uint64_t)(((uint64_t)val & MAKE_UMASK64(width)) << lsoffset);
+}
+
+static inline uint64_t mc_dec(uint64_t val, int lsoffset, int width)
+{
+ return (uint64_t)((val >> lsoffset) & MAKE_UMASK64(width));
+}
+
+struct mc_command {
+ uint64_t header;
+ uint64_t params[MC_CMD_NUM_OF_PARAMS];
+};
+
+/**
+ * enum mc_cmd_status - indicates MC status at command response
+ * @MC_CMD_STATUS_OK: Completed successfully
+ * @MC_CMD_STATUS_READY: Ready to be processed
+ * @MC_CMD_STATUS_AUTH_ERR: Authentication error
+ * @MC_CMD_STATUS_NO_PRIVILEGE: No privilege
+ * @MC_CMD_STATUS_DMA_ERR: DMA or I/O error
+ * @MC_CMD_STATUS_CONFIG_ERR: Configuration error
+ * @MC_CMD_STATUS_TIMEOUT: Operation timed out
+ * @MC_CMD_STATUS_NO_RESOURCE: No resources
+ * @MC_CMD_STATUS_NO_MEMORY: No memory available
+ * @MC_CMD_STATUS_BUSY: Device is busy
+ * @MC_CMD_STATUS_UNSUPPORTED_OP: Unsupported operation
+ * @MC_CMD_STATUS_INVALID_STATE: Invalid state
+ */
+enum mc_cmd_status {
+ MC_CMD_STATUS_OK = 0x0,
+ MC_CMD_STATUS_READY = 0x1,
+ MC_CMD_STATUS_AUTH_ERR = 0x3,
+ MC_CMD_STATUS_NO_PRIVILEGE = 0x4,
+ MC_CMD_STATUS_DMA_ERR = 0x5,
+ MC_CMD_STATUS_CONFIG_ERR = 0x6,
+ MC_CMD_STATUS_TIMEOUT = 0x7,
+ MC_CMD_STATUS_NO_RESOURCE = 0x8,
+ MC_CMD_STATUS_NO_MEMORY = 0x9,
+ MC_CMD_STATUS_BUSY = 0xA,
+ MC_CMD_STATUS_UNSUPPORTED_OP = 0xB,
+ MC_CMD_STATUS_INVALID_STATE = 0xC
+};
+
+/* MC command flags */
+
+/**
+ * High priority flag
+ */
+#define MC_CMD_FLAG_PRI 0x00008000
+/**
+ * Command completion flag
+ */
+#define MC_CMD_FLAG_INTR_DIS 0x01000000
+
+/**
+ * Command ID field offset
+ */
+#define MC_CMD_HDR_CMDID_O 48
+/**
+ * Command ID field size
+ */
+#define MC_CMD_HDR_CMDID_S 16
+/**
+ * Token field offset
+ */
+#define MC_CMD_HDR_TOKEN_O 32
+/**
+ * Token field size
+ */
+#define MC_CMD_HDR_TOKEN_S 16
+/**
+ * Status field offset
+ */
+#define MC_CMD_HDR_STATUS_O 16
+/**
+ * Status field size
+ */
+#define MC_CMD_HDR_STATUS_S 8
+/**
+ * Flags field offset
+ */
+#define MC_CMD_HDR_FLAGS_O 0
+/**
+ * Flags field size
+ */
+#define MC_CMD_HDR_FLAGS_S 32
+/**
+ * Command flags mask
+ */
+#define MC_CMD_HDR_FLAGS_MASK 0xFF00FF00
+
+#define MC_CMD_HDR_READ_STATUS(_hdr) \
+ ((enum mc_cmd_status)mc_dec((_hdr), \
+ MC_CMD_HDR_STATUS_O, MC_CMD_HDR_STATUS_S))
+
+#define MC_CMD_HDR_READ_TOKEN(_hdr) \
+ ((uint16_t)mc_dec((_hdr), MC_CMD_HDR_TOKEN_O, MC_CMD_HDR_TOKEN_S))
+
+#define MC_PREP_OP(_ext, _param, _offset, _width, _type, _arg) \
+ ((_ext)[_param] |= cpu_to_le64(mc_enc((_offset), (_width), _arg)))
+
+#define MC_EXT_OP(_ext, _param, _offset, _width, _type, _arg) \
+ (_arg = (_type)mc_dec(cpu_to_le64(_ext[_param]), (_offset), (_width)))
+
+#define MC_CMD_OP(_cmd, _param, _offset, _width, _type, _arg) \
+ ((_cmd).params[_param] |= mc_enc((_offset), (_width), _arg))
+
+#define MC_RSP_OP(_cmd, _param, _offset, _width, _type, _arg) \
+ (_arg = (_type)mc_dec(_cmd.params[_param], (_offset), (_width)))
+
+/* cmd, param, offset, width, type, arg_name */
+#define CMD_CREATE_RSP_GET_OBJ_ID_PARAM0(cmd, object_id) \
+ MC_RSP_OP(cmd, 0, 0, 32, uint32_t, object_id)
+
+/* cmd, param, offset, width, type, arg_name */
+#define CMD_DESTROY_SET_OBJ_ID_PARAM0(cmd, object_id) \
+ MC_CMD_OP(cmd, 0, 0, 32, uint32_t, object_id)
+
+static inline uint64_t mc_encode_cmd_header(uint16_t cmd_id,
+ uint32_t cmd_flags,
+ uint16_t token)
+{
+ uint64_t hdr;
+
+ hdr = mc_enc(MC_CMD_HDR_CMDID_O, MC_CMD_HDR_CMDID_S, cmd_id);
+ hdr |= mc_enc(MC_CMD_HDR_FLAGS_O, MC_CMD_HDR_FLAGS_S,
+ (cmd_flags & MC_CMD_HDR_FLAGS_MASK));
+ hdr |= mc_enc(MC_CMD_HDR_TOKEN_O, MC_CMD_HDR_TOKEN_S, token);
+ hdr |= mc_enc(MC_CMD_HDR_STATUS_O, MC_CMD_HDR_STATUS_S,
+ MC_CMD_STATUS_READY);
+
+ return hdr;
+}
+
+/**
+ * mc_write_command - writes a command to a Management Complex (MC) portal
+ *
+ * @portal: pointer to an MC portal
+ * @cmd: pointer to a filled command
+ */
+static inline void mc_write_command(struct mc_command __iomem *portal,
+ struct mc_command *cmd)
+{
+ int i;
+ uint32_t word;
+
+ /* copy command parameters into the portal */
+ for (i = 0; i < MC_CMD_NUM_OF_PARAMS; i++)
+ iowrite64(cmd->params[i], &portal->params[i]);
+
+ /* submit the command by writing the header */
+ word = (uint32_t)mc_dec(cmd->header, 32, 32);
+ iowrite32(word, (((uint32_t *)&portal->header) + 1));
+
+ word = (uint32_t)mc_dec(cmd->header, 0, 32);
+ iowrite32(word, (uint32_t *)&portal->header);
+}
+
+/**
+ * mc_read_response - reads the response for the last MC command from a
+ * Management Complex (MC) portal
+ *
+ * @portal: pointer to an MC portal
+ * @resp: pointer to command response buffer
+ *
+ * Returns MC_CMD_STATUS_OK on Success; Error code otherwise.
+ */
+static inline enum mc_cmd_status mc_read_response(
+ struct mc_command __iomem *portal,
+ struct mc_command *resp)
+{
+ int i;
+ enum mc_cmd_status status;
+
+ /* Copy command response header from MC portal: */
+ resp->header = ioread64(&portal->header);
+ status = MC_CMD_HDR_READ_STATUS(resp->header);
+ if (status != MC_CMD_STATUS_OK)
+ return status;
+
+ /* Copy command response data from MC portal: */
+ for (i = 0; i < MC_CMD_NUM_OF_PARAMS; i++)
+ resp->params[i] = ioread64(&portal->params[i]);
+
+ return status;
+}
+
+#endif /* __FSL_MC_CMD_H */
diff --git a/drivers/bus/fslmc/mc/fsl_mc_sys.h b/drivers/bus/fslmc/mc/fsl_mc_sys.h
new file mode 100644
index 0000000..d9d43e5
--- /dev/null
+++ b/drivers/bus/fslmc/mc/fsl_mc_sys.h
@@ -0,0 +1,98 @@
+/* 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_MC_SYS_H
+#define _FSL_MC_SYS_H
+
+#ifdef __linux_driver__
+
+#include <linux/errno.h>
+#include <asm/io.h>
+#include <linux/slab.h>
+
+struct fsl_mc_io {
+ void *regs;
+};
+
+#ifndef ENOTSUP
+#define ENOTSUP 95
+#endif
+
+#define ioread64(_p) readq(_p)
+#define iowrite64(_v, _p) writeq(_v, _p)
+
+#else /* __linux_driver__ */
+
+#include <stdio.h>
+#include <libio.h>
+#include <stdint.h>
+#include <errno.h>
+#include <sys/uio.h>
+#include <linux/byteorder/little_endian.h>
+
+#define cpu_to_le64(x) __cpu_to_le64(x)
+#ifndef dmb
+#define dmb() {__asm__ __volatile__("" : : : "memory"); }
+#endif
+#define __iormb() dmb()
+#define __iowmb() dmb()
+#define __arch_getq(a) (*(volatile unsigned long *)(a))
+#define __arch_putq(v, a) (*(volatile unsigned long *)(a) = (v))
+#define __arch_putq32(v, a) (*(volatile unsigned int *)(a) = (v))
+#define readq(c) \
+ ({ uint64_t __v = __arch_getq(c); __iormb(); __v; })
+#define writeq(v, c) \
+ ({ uint64_t __v = v; __iowmb(); __arch_putq(__v, c); __v; })
+#define writeq32(v, c) \
+ ({ uint32_t __v = v; __iowmb(); __arch_putq32(__v, c); __v; })
+#define ioread64(_p) readq(_p)
+#define iowrite64(_v, _p) writeq(_v, _p)
+#define iowrite32(_v, _p) writeq32(_v, _p)
+#define __iomem
+
+struct fsl_mc_io {
+ void *regs;
+};
+
+#ifndef ENOTSUP
+#define ENOTSUP 95
+#endif
+
+/*GPP is supposed to use MC commands with low priority*/
+#define CMD_PRI_LOW 0 /*!< Low Priority command indication */
+
+struct mc_command;
+
+int mc_send_command(struct fsl_mc_io *mc_io, struct mc_command *cmd);
+
+#endif /* __linux_driver__ */
+
+#endif /* _FSL_MC_SYS_H */
diff --git a/drivers/bus/fslmc/mc/mc_sys.c b/drivers/bus/fslmc/mc/mc_sys.c
new file mode 100644
index 0000000..c428624
--- /dev/null
+++ b/drivers/bus/fslmc/mc/mc_sys.c
@@ -0,0 +1,107 @@
+/* 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 <fsl_mc_sys.h>
+#include <fsl_mc_cmd.h>
+
+#include <rte_spinlock.h>
+
+/** User space framework uses MC Portal in shared mode. Following change
+ * introduces lock in MC FLIB
+ */
+
+/**
+ * A static spinlock initializer.
+ */
+static rte_spinlock_t mc_portal_lock = RTE_SPINLOCK_INITIALIZER;
+
+static int mc_status_to_error(enum mc_cmd_status status)
+{
+ switch (status) {
+ case MC_CMD_STATUS_OK:
+ return 0;
+ case MC_CMD_STATUS_AUTH_ERR:
+ return -EACCES; /* Token error */
+ case MC_CMD_STATUS_NO_PRIVILEGE:
+ return -EPERM; /* Permission denied */
+ case MC_CMD_STATUS_DMA_ERR:
+ return -EIO; /* Input/Output error */
+ case MC_CMD_STATUS_CONFIG_ERR:
+ return -EINVAL; /* Device not configured */
+ case MC_CMD_STATUS_TIMEOUT:
+ return -ETIMEDOUT; /* Operation timed out */
+ case MC_CMD_STATUS_NO_RESOURCE:
+ return -ENAVAIL; /* Resource temporarily unavailable */
+ case MC_CMD_STATUS_NO_MEMORY:
+ return -ENOMEM; /* Cannot allocate memory */
+ case MC_CMD_STATUS_BUSY:
+ return -EBUSY; /* Device busy */
+ case MC_CMD_STATUS_UNSUPPORTED_OP:
+ return -ENOTSUP; /* Operation not supported by device */
+ case MC_CMD_STATUS_INVALID_STATE:
+ return -ENODEV; /* Invalid device state */
+ default:
+ break;
+ }
+
+ /* Not expected to reach here */
+ return -EINVAL;
+}
+
+int mc_send_command(struct fsl_mc_io *mc_io, struct mc_command *cmd)
+{
+ enum mc_cmd_status status;
+
+ if (!mc_io || !mc_io->regs)
+ return -EACCES;
+
+ /* --- Call lock function here in case portal is shared --- */
+ rte_spinlock_lock(&mc_portal_lock);
+
+ mc_write_command(mc_io->regs, cmd);
+
+ /* Spin until status changes */
+ do {
+ status = MC_CMD_HDR_READ_STATUS(ioread64(mc_io->regs));
+
+ /* --- Call wait function here to prevent blocking ---
+ * Change the loop condition accordingly to exit on timeout.
+ */
+ } while (status == MC_CMD_STATUS_READY);
+
+ /* Read the response back into the command buffer */
+ mc_read_response(mc_io->regs, cmd);
+
+ /* --- Call unlock function here in case portal is shared --- */
+ rte_spinlock_unlock(&mc_portal_lock);
+
+ return mc_status_to_error(status);
+}
--
2.7.4