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Message-ID: <1448886062-16962-5-git-send-email-igal.liberman@freescale.com>
Date: Mon, 30 Nov 2015 14:21:00 +0200
From: <igal.liberman@...escale.com>
To: <netdev@...r.kernel.org>
CC: <linuxppc-dev@...ts.ozlabs.org>, <linux-kernel@...r.kernel.org>,
<scottwood@...escale.com>, <madalin.bucur@...escale.com>,
<pebolle@...cali.nl>, <joakim.tjernlund@...nsmode.se>,
<ppc@...dchasers.com>, <stephen@...workplumber.org>,
<davem@...emloft.net>, Igal Liberman <igal.liberman@...escale.com>
Subject: [v8, 4/6] fsl/fman: Add FMan SP support
From: Igal Liberman <igal.liberman@...escale.com>
The Storage Profiles contain parameters that are used
by the FMan for frame reception and transmission.
Signed-off-by: Igal Liberman <igal.liberman@...escale.com>
---
drivers/net/ethernet/freescale/fman/Makefile | 2 +-
drivers/net/ethernet/freescale/fman/fman_sp.c | 167 +++++++++++++++++++++++++
drivers/net/ethernet/freescale/fman/fman_sp.h | 103 +++++++++++++++
3 files changed, 271 insertions(+), 1 deletion(-)
create mode 100644 drivers/net/ethernet/freescale/fman/fman_sp.c
create mode 100644 drivers/net/ethernet/freescale/fman/fman_sp.h
diff --git a/drivers/net/ethernet/freescale/fman/Makefile b/drivers/net/ethernet/freescale/fman/Makefile
index 43360d70..5141532 100644
--- a/drivers/net/ethernet/freescale/fman/Makefile
+++ b/drivers/net/ethernet/freescale/fman/Makefile
@@ -2,5 +2,5 @@ subdir-ccflags-y += -I$(srctree)/drivers/net/ethernet/freescale/fman
obj-y += fsl_fman.o fsl_fman_mac.o
-fsl_fman-objs := fman_muram.o fman.o
+fsl_fman-objs := fman_muram.o fman.o fman_sp.o
fsl_fman_mac-objs := fman_dtsec.o fman_memac.o fman_tgec.o
diff --git a/drivers/net/ethernet/freescale/fman/fman_sp.c b/drivers/net/ethernet/freescale/fman/fman_sp.c
new file mode 100644
index 0000000..f36c622
--- /dev/null
+++ b/drivers/net/ethernet/freescale/fman/fman_sp.c
@@ -0,0 +1,167 @@
+/*
+ * Copyright 2008 - 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 Freescale Semiconductor nor the
+ * names of its 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 Freescale Semiconductor ``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 Freescale Semiconductor 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 "fman_sp.h"
+#include "fman.h"
+
+void fman_sp_set_buf_pools_in_asc_order_of_buf_sizes(struct fman_ext_pools
+ *fm_ext_pools,
+ u8 *ordered_array,
+ u16 *sizes_array)
+{
+ u16 buf_size = 0;
+ int i = 0, j = 0, k = 0;
+
+ /* First we copy the external buffers pools information
+ * to an ordered local array
+ */
+ for (i = 0; i < fm_ext_pools->num_of_pools_used; i++) {
+ /* get pool size */
+ buf_size = fm_ext_pools->ext_buf_pool[i].size;
+
+ /* keep sizes in an array according to poolId
+ * for direct access
+ */
+ sizes_array[fm_ext_pools->ext_buf_pool[i].id] = buf_size;
+
+ /* save poolId in an ordered array according to size */
+ for (j = 0; j <= i; j++) {
+ /* this is the next free place in the array */
+ if (j == i)
+ ordered_array[i] =
+ fm_ext_pools->ext_buf_pool[i].id;
+ else {
+ /* find the right place for this poolId */
+ if (buf_size < sizes_array[ordered_array[j]]) {
+ /* move the pool_ids one place ahead
+ * to make room for this poolId
+ */
+ for (k = i; k > j; k--)
+ ordered_array[k] =
+ ordered_array[k - 1];
+
+ /* now k==j, this is the place for
+ * the new size
+ */
+ ordered_array[k] =
+ fm_ext_pools->ext_buf_pool[i].id;
+ break;
+ }
+ }
+ }
+ }
+}
+
+int fman_sp_build_buffer_struct(struct fman_sp_int_context_data_copy *
+ int_context_data_copy,
+ struct fman_buffer_prefix_content *
+ buffer_prefix_content,
+ struct fman_sp_buf_margins *buf_margins,
+ struct fman_sp_buffer_offsets *buffer_offsets,
+ u8 *internal_buf_offset)
+{
+ u32 tmp;
+
+ /* Align start of internal context data to 16 byte */
+ int_context_data_copy->ext_buf_offset = (u16)
+ ((buffer_prefix_content->priv_data_size & (OFFSET_UNITS - 1)) ?
+ ((buffer_prefix_content->priv_data_size + OFFSET_UNITS) &
+ ~(u16)(OFFSET_UNITS - 1)) :
+ buffer_prefix_content->priv_data_size);
+
+ /* Translate margin and int_context params to FM parameters */
+ /* Initialize with illegal value. Later we'll set legal values. */
+ buffer_offsets->prs_result_offset = (u32)ILLEGAL_BASE;
+ buffer_offsets->time_stamp_offset = (u32)ILLEGAL_BASE;
+ buffer_offsets->hash_result_offset = (u32)ILLEGAL_BASE;
+
+ /* Internally the driver supports 4 options
+ * 1. prsResult/timestamp/hashResult selection (in fact 8 options,
+ * but for simplicity we'll
+ * relate to it as 1).
+ * 2. All IC context (from AD) not including debug.
+ */
+
+ /* This case covers the options under 1 */
+ /* Copy size must be in 16-byte granularity. */
+ int_context_data_copy->size =
+ (u16)((buffer_prefix_content->pass_prs_result ? 32 : 0) +
+ ((buffer_prefix_content->pass_time_stamp ||
+ buffer_prefix_content->pass_hash_result) ? 16 : 0));
+
+ /* Align start of internal context data to 16 byte */
+ int_context_data_copy->int_context_offset =
+ (u8)(buffer_prefix_content->pass_prs_result ? 32 :
+ ((buffer_prefix_content->pass_time_stamp ||
+ buffer_prefix_content->pass_hash_result) ? 64 : 0));
+
+ if (buffer_prefix_content->pass_prs_result)
+ buffer_offsets->prs_result_offset =
+ int_context_data_copy->ext_buf_offset;
+ if (buffer_prefix_content->pass_time_stamp)
+ buffer_offsets->time_stamp_offset =
+ buffer_prefix_content->pass_prs_result ?
+ (int_context_data_copy->ext_buf_offset +
+ sizeof(struct fman_prs_result)) :
+ int_context_data_copy->ext_buf_offset;
+ if (buffer_prefix_content->pass_hash_result)
+ /* If PR is not requested, whether TS is
+ * requested or not, IC will be copied from TS
+ */
+ buffer_offsets->hash_result_offset =
+ buffer_prefix_content->pass_prs_result ?
+ (int_context_data_copy->ext_buf_offset +
+ sizeof(struct fman_prs_result) + 8) :
+ int_context_data_copy->ext_buf_offset + 8;
+
+ if (int_context_data_copy->size)
+ buf_margins->start_margins =
+ (u16)(int_context_data_copy->ext_buf_offset +
+ int_context_data_copy->size);
+ else
+ /* No Internal Context passing, STartMargin is
+ * immediately after private_info
+ */
+ buf_margins->start_margins =
+ buffer_prefix_content->priv_data_size;
+
+ /* align data start */
+ tmp = (u32)(buf_margins->start_margins %
+ buffer_prefix_content->data_align);
+ if (tmp)
+ buf_margins->start_margins +=
+ (buffer_prefix_content->data_align - tmp);
+ buffer_offsets->data_offset = buf_margins->start_margins;
+
+ return 0;
+}
+
diff --git a/drivers/net/ethernet/freescale/fman/fman_sp.h b/drivers/net/ethernet/freescale/fman/fman_sp.h
new file mode 100644
index 0000000..820b7f6
--- /dev/null
+++ b/drivers/net/ethernet/freescale/fman/fman_sp.h
@@ -0,0 +1,103 @@
+/*
+ * Copyright 2008 - 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 Freescale Semiconductor nor the
+ * names of its 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 Freescale Semiconductor ``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 Freescale Semiconductor 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 __FM_SP_H
+#define __FM_SP_H
+
+#include "fman.h"
+#include <linux/types.h>
+
+#define ILLEGAL_BASE (~0)
+
+/* defaults */
+#define DFLT_FM_SP_BUFFER_PREFIX_CONTEXT_DATA_ALIGN 64
+
+/* Registers bit fields */
+#define FMAN_SP_EXT_BUF_POOL_EN_COUNTER 0x40000000
+#define FMAN_SP_EXT_BUF_POOL_VALID 0x80000000
+#define FMAN_SP_EXT_BUF_POOL_BACKUP 0x20000000
+#define FMAN_SP_DMA_ATTR_WRITE_OPTIMIZE 0x00100000
+#define FMAN_SP_SG_DISABLE 0x80000000
+
+/* shifts */
+#define FMAN_SP_EXT_BUF_MARG_START_SHIFT 16
+#define FMAN_SP_DMA_ATTR_SWP_SHIFT 30
+#define FMAN_SP_IC_TO_EXT_SHIFT 16
+#define FMAN_SP_IC_FROM_INT_SHIFT 8
+
+/* structure for defining internal context copying */
+struct fman_sp_int_context_data_copy {
+ /* < Offset in External buffer to which internal
+ * context is copied to (Rx) or taken from (Tx, Op).
+ */
+ u16 ext_buf_offset;
+ /* Offset within internal context to copy from
+ * (Rx) or to copy to (Tx, Op).
+ */
+ u8 int_context_offset;
+ /* Internal offset size to be copied */
+ u16 size;
+};
+
+/* struct for defining external buffer margins */
+struct fman_sp_buf_margins {
+ /* Number of bytes to be left at the beginning
+ * of the external buffer (must be divisible by 16)
+ */
+ u16 start_margins;
+ /* number of bytes to be left at the end
+ * of the external buffer(must be divisible by 16)
+ */
+ u16 end_margins;
+};
+
+struct fman_sp_buffer_offsets {
+ u32 data_offset;
+ u32 prs_result_offset;
+ u32 time_stamp_offset;
+ u32 hash_result_offset;
+};
+
+int fman_sp_build_buffer_struct(struct fman_sp_int_context_data_copy
+ *int_context_data_copy,
+ struct fman_buffer_prefix_content
+ *buffer_prefix_content,
+ struct fman_sp_buf_margins *buf_margins,
+ struct fman_sp_buffer_offsets
+ *buffer_offsets,
+ u8 *internal_buf_offset);
+
+void fman_sp_set_buf_pools_in_asc_order_of_buf_sizes(struct fman_ext_pools
+ *fm_ext_pools,
+ u8 *ordered_array,
+ u16 *sizes_array);
+
+#endif /* __FM_SP_H */
--
1.7.9.5
--
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