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Message-ID: <Y+Z4Fsjw2NTl4fLD@corigine.com>
Date: Fri, 10 Feb 2023 18:00:06 +0100
From: Simon Horman <simon.horman@...igine.com>
To: Harsh Jain <h.jain@....com>
Cc: davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
pabeni@...hat.com, thomas.lendacky@....com, Raju.Rangoju@....com,
Shyam-sundar.S-k@....com, harshjain.prof@...il.com,
abhijit.gangurde@....com, puneet.gupta@....com,
nikhil.agarwal@....com, tarak.reddy@....com, netdev@...r.kernel.org
Subject: Re: [PATCH 1/6] net: ethernet: efct: New X3 net driver
On Fri, Feb 10, 2023 at 06:33:16PM +0530, Harsh Jain wrote:
> This patch series adds new ethernet network driver for Alveo X3522[1].
> is a low-latency NIC with an aim to deliver the lowest possible
> latency. It accelerates a range of diverse trading strategies
> and financial applications.
>
> Device has 2 PCI functions and each function supports 2 port, currently
> at 10GbE. This patch deals with PCI device probing and netdev creation.
> It also adds support for Firmware communication APIs used in later patches.
>
> [1] https://www.xilinx.com/x3
>
> Signed-off-by: Abhijit Gangurde<abhijit.gangurde@....com>
> Signed-off-by: Puneet Gupta <puneet.gupta@....com>
> Signed-off-by: Nikhil Agarwal<nikhil.agarwal@....com>
> Signed-off-by: Tarak Reddy<tarak.reddy@....com>
> Signed-off-by: Harsh Jain <h.jain@....com>
> ---
> drivers/net/ethernet/amd/efct/efct_bitfield.h | 483 ++
> drivers/net/ethernet/amd/efct/efct_common.c | 1154 ++++
> drivers/net/ethernet/amd/efct/efct_common.h | 134 +
> drivers/net/ethernet/amd/efct/efct_driver.h | 770 +++
> drivers/net/ethernet/amd/efct/efct_enum.h | 130 +
> drivers/net/ethernet/amd/efct/efct_evq.c | 185 +
> drivers/net/ethernet/amd/efct/efct_evq.h | 21 +
> drivers/net/ethernet/amd/efct/efct_io.h | 64 +
> drivers/net/ethernet/amd/efct/efct_netdev.c | 459 ++
> drivers/net/ethernet/amd/efct/efct_netdev.h | 19 +
> drivers/net/ethernet/amd/efct/efct_nic.c | 1300 ++++
> drivers/net/ethernet/amd/efct/efct_nic.h | 104 +
> drivers/net/ethernet/amd/efct/efct_pci.c | 1077 +++
> drivers/net/ethernet/amd/efct/efct_reg.h | 1060 +++
> drivers/net/ethernet/amd/efct/mcdi.c | 1817 ++++++
> drivers/net/ethernet/amd/efct/mcdi.h | 373 ++
> .../net/ethernet/amd/efct/mcdi_functions.c | 642 ++
> .../net/ethernet/amd/efct/mcdi_functions.h | 39 +
> drivers/net/ethernet/amd/efct/mcdi_pcol.h | 5789 +++++++++++++++++
> .../net/ethernet/amd/efct/mcdi_port_common.c | 949 +++
> .../net/ethernet/amd/efct/mcdi_port_common.h | 98 +
> 21 files changed, 16667 insertions(+)
This is a very large patch to review.
> create mode 100644 drivers/net/ethernet/amd/efct/efct_bitfield.h
> create mode 100644 drivers/net/ethernet/amd/efct/efct_common.c
> create mode 100644 drivers/net/ethernet/amd/efct/efct_common.h
> create mode 100644 drivers/net/ethernet/amd/efct/efct_driver.h
> create mode 100644 drivers/net/ethernet/amd/efct/efct_enum.h
> create mode 100644 drivers/net/ethernet/amd/efct/efct_evq.c
> create mode 100644 drivers/net/ethernet/amd/efct/efct_evq.h
> create mode 100644 drivers/net/ethernet/amd/efct/efct_io.h
> create mode 100644 drivers/net/ethernet/amd/efct/efct_netdev.c
> create mode 100644 drivers/net/ethernet/amd/efct/efct_netdev.h
> create mode 100644 drivers/net/ethernet/amd/efct/efct_nic.c
> create mode 100644 drivers/net/ethernet/amd/efct/efct_nic.h
> create mode 100644 drivers/net/ethernet/amd/efct/efct_pci.c
> create mode 100644 drivers/net/ethernet/amd/efct/efct_reg.h
> create mode 100644 drivers/net/ethernet/amd/efct/mcdi.c
> create mode 100644 drivers/net/ethernet/amd/efct/mcdi.h
> create mode 100644 drivers/net/ethernet/amd/efct/mcdi_functions.c
> create mode 100644 drivers/net/ethernet/amd/efct/mcdi_functions.h
> create mode 100644 drivers/net/ethernet/amd/efct/mcdi_pcol.h
> create mode 100644 drivers/net/ethernet/amd/efct/mcdi_port_common.c
> create mode 100644 drivers/net/ethernet/amd/efct/mcdi_port_common.h
>
> diff --git a/drivers/net/ethernet/amd/efct/efct_bitfield.h b/drivers/net/ethernet/amd/efct/efct_bitfield.h
> new file mode 100644
> index 000000000000..bd67e0fa08f9
> --- /dev/null
> +++ b/drivers/net/ethernet/amd/efct/efct_bitfield.h
> @@ -0,0 +1,483 @@
> +/* SPDX-License-Identifier: GPL-2.0
> + ****************************************************************************
> + * Driver for AMD/Xilinx network controllers and boards
> + * Copyright (C) 2021, Xilinx, Inc.
> + * Copyright (C) 2022-2023, Advanced Micro Devices, Inc.
> + */
> +
> +#ifndef EFCT_BITFIELD_H
> +#define EFCT_BITFIELD_H
> +#include <linux/types.h>
> +
> +/* Efct bitfield access
> + * NIC uses bitfield of upto 128 bits wide. Since there is no
> + * native 128-bit datatype on most systems, and 64-bit datatypes
> + * are inefficient on 32-bit systems and vice versa,
> + * we wrap accesses in a way that uses the most efficient
> + * datatype.
> + *
> + * The NICs are PCI devices and therefore little-endian. Since most
> + * of the quantities that we deal with are DMAed to/from host memory,
> + * we define our datatypes (union efct_oword, union efct_dword and
> + * union efct_qword) to be little-endian.
> + */
> +
> +/* Lowest bit numbers and widths */
> +#define EFCT_DUMMY_FIELD_LBN 0
> +#define EFCT_DUMMY_FIELD_WIDTH 0
> +#define EFCT_WORD_0_LBN 0
> +#define EFCT_WORD_0_WIDTH 16
> +#define EFCT_WORD_1_LBN 16
> +#define EFCT_WORD_1_WIDTH 16
> +#define EFCT_DWORD_0_LBN 0
> +#define EFCT_DWORD_0_WIDTH 32
> +#define EFCT_DWORD_1_LBN 32
> +#define EFCT_DWORD_1_WIDTH 32
> +#define EFCT_DWORD_2_LBN 64
> +#define EFCT_DWORD_2_WIDTH 32
> +#define EFCT_DWORD_3_LBN 96
> +#define EFCT_DWORD_3_WIDTH 32
> +#define EFCT_QWORD_0_LBN 0
> +#define EFCT_QWORD_0_WIDTH 64
nit: The above would be easier to read if the values were vertically aligned
nit 2: blank line here
> +/* Specified attribute (e.g. LBN) of the specified field */
> +#define EFCT_VAL(field, attribute) field ## _ ## attribute
> +/* Low bit number of the specified field */
> +#define EFCT_LOW_BIT(field) EFCT_VAL(field, LBN)
> +/* Bit width of the specified field */
> +#define EFCT_WIDTH(field) EFCT_VAL(field, WIDTH)
> +/* High bit number of the specified field */
> +#define EFCT_HIGH_BIT(field) (EFCT_LOW_BIT(field) + EFCT_WIDTH(field) - 1)
nit2: and here
> +/* Mask equal in width to the specified field.
> + *
> + * For example, a field with width 5 would have a mask of 0x1f.
> + *
> + * The maximum width mask that can be generated is 64 bits.
> + */
> +#define EFCT_MASK64(width) \
> + ((width) == 64 ? ~((u64)0) : \
> + (((((u64)1) << (width))) - 1))
Maybe:
#define EFCT_MASK64_B(width) ((width) ? GENMASK_ULL((width) - 1, 0) : 0ULL)
> +
> +/* Mask equal in width to the specified field.
> + *
> + * For example, a field with width 5 would have a mask of 0x1f.
> + *
> + * The maximum width mask that can be generated is 32 bits. Use
> + * EFCT_MASK64 for higher width fields.
> + */
> +#define EFCT_MASK32(width) \
> + ((width) == 32 ? ~((u32)0) : \
> + (((((u32)1) << (width))) - 1))
Maybe:
#define EFCT_MASK32_B(width) ((width) ? GENMASK((width) - 1, 0) : 0UL)
> +
> +/* A doubleword (i.e. 4 byte) datatype - little-endian in HW */
> +union efct_dword {
> + __le32 word32;
> +};
I see where you are going with consistency for
efct_dword, efct_qword and efct_oword.
But does a union with one element provide value?
> +
> +/* A quadword (i.e. 8 byte) datatype - little-endian in HW */
> +union efct_qword {
> + __le64 u64[1];
> + __le32 u32[2];
> + union efct_dword dword[2];
dword is an alias for .ue2. I'm not sure I see the value in this.
> +};
> +
> +/* An octword (eight-word, i.e. 16 byte) datatype - little-endian in HW */
> +union efct_oword {
> + __le64 u64[2];
> + union efct_qword qword[2];
> + __le32 u32[4];
> + union efct_dword dword[4];
ditto
> +};
> +
> +/* Format string and value expanders for printk */
> +#define EFCT_DWORD_FMT "%08x"
> +#define EFCT_OWORD_FMT "%08x:%08x:%08x:%08x"
> +#define EFCT_DWORD_VAL(dword) \
> + ((u32)le32_to_cpu((dword).word32))
> +
> +/* Extract bit field portion [low,high) from the native-endian element
> + * which contains bits [min,max).
> + * For example, suppose "element" represents the high 32 bits of a
> + * 64-bit value, and we wish to extract the bits belonging to the bit
> + * field occupying bits 28-45 of this 64-bit value.
> + * Then EFCT_EXTRACT ( element, 32, 63, 28, 45 ) would give
> + *
> + * ( element ) << 4
> + * The result will contain the relevant bits filled in the range
> + * [0,high-low), with garbage in bits [high-low+1,...).
In this case [0,min-low) will be zero filled.
But maybe that never happens so it's not important that it is spelt out.
Garbage bits sounds fun.
Did you consider implementing this using GET_FIELD and GENMASK_ULL?
> + */
> +#define EFCT_EXTRACT_NATIVE(native_element, min, max, low, high) \
> + ((low) > (max) || (high) < (min) ? 0 : \
> + (low) > (min) ? \
> + (native_element) >> ((low) - (min)) : \
> + (native_element) << ((min) - (low)))
> +
> +/* Extract bit field portion [low,high) from the 64-bit little-endian
> + * element which contains bits [min,max)
> + */
> +#define EFCT_EXTRACT64(element, min, max, low, high) \
> + EFCT_EXTRACT_NATIVE(le64_to_cpu(element), min, max, low, high)
> +
> +/* Extract bit field portion [low,high) from the 32-bit little-endian
> + * element which contains bits [min,max)
> + */
> +#define EFCT_EXTRACT32(element, min, max, low, high) \
> + EFCT_EXTRACT_NATIVE(le32_to_cpu(element), min, max, low, high)
> +
> +#define EFCT_EXTRACT_OWORD64(oword, low, high) \
> + ((EFCT_EXTRACT64((oword).u64[0], 0, 63, low, high) | \
> + EFCT_EXTRACT64((oword).u64[1], 64, 127, low, high)) & \
> + EFCT_MASK64((high) + 1 - (low)))
> +
> +#define EFCT_EXTRACT_QWORD64(qword, low, high) \
> + (EFCT_EXTRACT64((qword).u64[0], 0, 63, low, high) & \
> + EFCT_MASK64((high) + 1 - (low)))
> +
> +#define EFCT_EXTRACT_OWORD32(oword, low, high) \
> + ((EFCT_EXTRACT32((oword).u32[0], 0, 31, low, high) | \
> + EFCT_EXTRACT32((oword).u32[1], 32, 63, low, high) | \
> + EFCT_EXTRACT32((oword).u32[2], 64, 95, low, high) | \
> + EFCT_EXTRACT32((oword).u32[3], 96, 127, low, high)) & \
> + EFCT_MASK32((high) + 1 - (low)))
> +
> +#define EFCT_EXTRACT_QWORD32(qword, low, high) \
> + ((EFCT_EXTRACT32((qword).u32[0], 0, 31, low, high) | \
> + EFCT_EXTRACT32((qword).u32[1], 32, 63, low, high)) & \
> + EFCT_MASK32((high) + 1 - (low)))
> +
> +#define EFCT_EXTRACT_DWORD(dword, low, high) \
> + (EFCT_EXTRACT32((dword).word32, 0, 31, low, high) & \
> + EFCT_MASK32((high) + 1 - (low)))
> +
> +#define EFCT_OWORD_FIELD64(oword, field) \
> + EFCT_EXTRACT_OWORD64(oword, EFCT_LOW_BIT(field), \
> + EFCT_HIGH_BIT(field))
> +
> +#define EFCT_QWORD_FIELD64(qword, field) \
> + EFCT_EXTRACT_QWORD64(qword, EFCT_LOW_BIT(field), \
> + EFCT_HIGH_BIT(field))
> +
> +#define EFCT_OWORD_FIELD32(oword, field) \
> + EFCT_EXTRACT_OWORD32(oword, EFCT_LOW_BIT(field), \
> + EFCT_HIGH_BIT(field))
> +
> +#define EFCT_QWORD_FIELD32(qword, field) \
> + EFCT_EXTRACT_QWORD32(qword, EFCT_LOW_BIT(field), \
> + EFCT_HIGH_BIT(field))
> +
> +#define EFCT_DWORD_FIELD(dword, field) \
> + EFCT_EXTRACT_DWORD(dword, EFCT_LOW_BIT(field), \
> + EFCT_HIGH_BIT(field))
> +
> +#define EFCT_OWORD_IS_ZERO64(oword) \
> + (((oword).u64[0] | (oword).u64[1]) == (__force __le64)0)
> +
> +#define EFCT_QWORD_IS_ZERO64(qword) \
> + (((qword).u64[0]) == (__force __le64)0)
> +
> +#define EFCT_OWORD_IS_ZERO32(oword) \
> + (((oword).u32[0] | (oword).u32[1] | (oword).u32[2] | (oword).u32[3]) \
> + == (__force __le32)0)
> +
> +#define EFCT_QWORD_IS_ZERO32(qword) \
> + (((qword).u32[0] | (qword).u32[1]) == (__force __le32)0)
> +
> +#define EFCT_DWORD_IS_ZERO(dword) \
> + (((dword).u32[0]) == (__force __le32)0)
> +
> +#define EFCT_OWORD_IS_ALL_ONES64(oword) \
> + (((oword).u64[0] & (oword).u64[1]) == ~((__force __le64)0))
> +
> +#define EFCT_QWORD_IS_ALL_ONES64(qword) \
> + ((qword).u64[0] == ~((__force __le64)0))
> +
> +#define EFCT_OWORD_IS_ALL_ONES32(oword) \
> + (((oword).u32[0] & (oword).u32[1] & (oword).u32[2] & (oword).u32[3]) \
> + == ~((__force __le32)0))
> +
> +#define EFCT_QWORD_IS_ALL_ONES32(qword) \
> + (((qword).u32[0] & (qword).u32[1]) == ~((__force __le32)0))
> +
> +#define EFCT_DWORD_IS_ALL_ONES(dword) \
> + ((dword).u32[0] == ~((__force __le32)0))
> +
> +#if BITS_PER_LONG == 64
> +#define EFCT_OWORD_FIELD EFCT_OWORD_FIELD64
> +#define EFCT_QWORD_FIELD EFCT_QWORD_FIELD64
> +#define EFCT_OWORD_IS_ZERO EFCT_OWORD_IS_ZERO64
> +#define EFCT_QWORD_IS_ZERO EFCT_QWORD_IS_ZERO64
> +#define EFCT_OWORD_IS_ALL_ONES EFCT_OWORD_IS_ALL_ONES64
> +#define EFCT_QWORD_IS_ALL_ONES EFCT_QWORD_IS_ALL_ONES64
> +#else
> +#define EFCT_OWORD_FIELD EFCT_OWORD_FIELD32
> +#define EFCT_QWORD_FIELD EFCT_QWORD_FIELD32
> +#define EFCT_OWORD_IS_ZERO EFCT_OWORD_IS_ZERO32
> +#define EFCT_QWORD_IS_ZERO EFCT_QWORD_IS_ZERO32
> +#define EFCT_OWORD_IS_ALL_ONES EFCT_OWORD_IS_ALL_ONES32
> +#define EFCT_QWORD_IS_ALL_ONES EFCT_QWORD_IS_ALL_ONES32
> +#endif
> +
> +/* Construct bit field portion
> + * Creates the portion of the bit field [low,high) that lies within
> + * the range [min,max).
> + */
> +#define EFCT_INSERT_NATIVE64(min, max, low, high, value) \
> + ((((low) > (max)) || ((high) < (min))) ? 0 : \
> + (((low) > (min)) ? \
> + (((u64)(value)) << ((low) - (min))) : \
> + (((u64)(value)) >> ((min) - (low)))))
> +
> +#define EFCT_INSERT_NATIVE32(min, max, low, high, value) \
> + ((((low) > (max)) || ((high) < (min))) ? 0 : \
> + (((low) > (min)) ? \
> + (((u32)(value)) << ((low) - (min))) : \
> + (((u32)(value)) >> ((min) - (low)))))
> +
> +#define EFCT_INSERT_NATIVE(min, max, low, high, value) \
> + (((((max) - (min)) >= 32) || (((high) - (low)) >= 32)) ? \
> + EFCT_INSERT_NATIVE64(min, max, low, high, value) : \
> + EFCT_INSERT_NATIVE32(min, max, low, high, value))
> +
> +/* Construct bit field portion
> + * Creates the portion of the named bit field that lies within the
> + * range [min,max).
> + */
> +#define EFCT_INSERT_FIELD_NATIVE(min, max, field, value) \
> + EFCT_INSERT_NATIVE(min, max, EFCT_LOW_BIT(field), \
> + EFCT_HIGH_BIT(field), value)
> +
> +/* Construct bit field
> + * Creates the portion of the named bit fields that lie within the
> + * range [min,max).
> + */
> +#define EFCT_INSERT_FIELDS_NATIVE(_min, _max, \
> + field1, value1, \
> + field2, value2, \
> + field3, value3, \
> + field4, value4, \
> + field5, value5, \
> + field6, value6, \
> + field7, value7, \
> + field8, value8, \
> + field9, value9, \
> + field10, value10) \
> + ({typeof(_min) (min) = (_min); \
> + typeof(_max) (max) = (_max); \
> + EFCT_INSERT_FIELD_NATIVE((min), (max), field1, (value1)) | \
> + EFCT_INSERT_FIELD_NATIVE((min), (max), field2, (value2)) | \
> + EFCT_INSERT_FIELD_NATIVE((min), (max), field3, (value3)) | \
> + EFCT_INSERT_FIELD_NATIVE((min), (max), field4, (value4)) | \
> + EFCT_INSERT_FIELD_NATIVE((min), (max), field5, (value5)) | \
> + EFCT_INSERT_FIELD_NATIVE((min), (max), field6, (value6)) | \
> + EFCT_INSERT_FIELD_NATIVE((min), (max), field7, (value7)) | \
> + EFCT_INSERT_FIELD_NATIVE((min), (max), field8, (value8)) | \
> + EFCT_INSERT_FIELD_NATIVE((min), (max), field9, (value9)) | \
> + EFCT_INSERT_FIELD_NATIVE((min), (max), field10, (value10)); })
> +
> +#define EFCT_INSERT_FIELDS64(...) \
> + cpu_to_le64(EFCT_INSERT_FIELDS_NATIVE(__VA_ARGS__))
> +
> +#define EFCT_INSERT_FIELDS32(...) \
> + cpu_to_le32(EFCT_INSERT_FIELDS_NATIVE(__VA_ARGS__))
> +
> +#define EFCT_POPULATE_OWORD64(oword, ...) do { \
> + (oword).u64[0] = EFCT_INSERT_FIELDS64(0, 63, __VA_ARGS__); \
> + (oword).u64[1] = EFCT_INSERT_FIELDS64(64, 127, __VA_ARGS__); \
> + } while (0)
> +
> +#define EFCT_POPULATE_QWORD64(qword, ...) (qword).u64[0] = EFCT_INSERT_FIELDS64(0, 63, __VA_ARGS__)
> +
> +#define EFCT_POPULATE_OWORD32(oword, ...) do { \
> + (oword).u32[0] = EFCT_INSERT_FIELDS32(0, 31, __VA_ARGS__); \
> + (oword).u32[1] = EFCT_INSERT_FIELDS32(32, 63, __VA_ARGS__); \
> + (oword).u32[2] = EFCT_INSERT_FIELDS32(64, 95, __VA_ARGS__); \
> + (oword).u32[3] = EFCT_INSERT_FIELDS32(96, 127, __VA_ARGS__); \
> + } while (0)
> +
> +#define EFCT_POPULATE_QWORD32(qword, ...) do { \
> + (qword).u32[0] = EFCT_INSERT_FIELDS32(0, 31, __VA_ARGS__); \
> + (qword).u32[1] = EFCT_INSERT_FIELDS32(32, 63, __VA_ARGS__); \
> + } while (0)
> +
> +#define EFCT_POPULATE_DWORD(dword, ...) (dword).word32 = EFCT_INSERT_FIELDS32(0, 31, __VA_ARGS__)
> +
> +#if BITS_PER_LONG == 64
> +#define EFCT_POPULATE_OWORD EFCT_POPULATE_OWORD64
> +#define EFCT_POPULATE_QWORD EFCT_POPULATE_QWORD64
> +#else
> +#define EFCT_POPULATE_OWORD EFCT_POPULATE_OWORD32
> +#define EFCT_POPULATE_QWORD EFCT_POPULATE_QWORD32
> +#endif
> +
> +/* Populate an octword field with various numbers of arguments */
> +#define EFCT_POPULATE_OWORD_10 EFCT_POPULATE_OWORD
> +#define EFCT_POPULATE_OWORD_9(oword, ...) \
> + EFCT_POPULATE_OWORD_10(oword, EFCT_DUMMY_FIELD, 0, __VA_ARGS__)
> +#define EFCT_POPULATE_OWORD_8(oword, ...) \
> + EFCT_POPULATE_OWORD_9(oword, EFCT_DUMMY_FIELD, 0, __VA_ARGS__)
> +#define EFCT_POPULATE_OWORD_7(oword, ...) \
> + EFCT_POPULATE_OWORD_8(oword, EFCT_DUMMY_FIELD, 0, __VA_ARGS__)
> +#define EFCT_POPULATE_OWORD_6(oword, ...) \
> + EFCT_POPULATE_OWORD_7(oword, EFCT_DUMMY_FIELD, 0, __VA_ARGS__)
> +#define EFCT_POPULATE_OWORD_5(oword, ...) \
> + EFCT_POPULATE_OWORD_6(oword, EFCT_DUMMY_FIELD, 0, __VA_ARGS__)
> +#define EFCT_POPULATE_OWORD_4(oword, ...) \
> + EFCT_POPULATE_OWORD_5(oword, EFCT_DUMMY_FIELD, 0, __VA_ARGS__)
> +#define EFCT_POPULATE_OWORD_3(oword, ...) \
> + EFCT_POPULATE_OWORD_4(oword, EFCT_DUMMY_FIELD, 0, __VA_ARGS__)
> +#define EFCT_POPULATE_OWORD_2(oword, ...) \
> + EFCT_POPULATE_OWORD_3(oword, EFCT_DUMMY_FIELD, 0, __VA_ARGS__)
> +#define EFCT_POPULATE_OWORD_1(oword, ...) \
> + EFCT_POPULATE_OWORD_2(oword, EFCT_DUMMY_FIELD, 0, __VA_ARGS__)
> +#define EFCT_ZERO_OWORD(oword) \
> + EFCT_POPULATE_OWORD_1(oword, EFCT_DUMMY_FIELD, 0)
> +#define EFCT_SET_OWORD(oword) \
> + EFCT_POPULATE_OWORD_4(oword, \
> + EFCT_DWORD_0, 0xffffffff, \
> + EFCT_DWORD_1, 0xffffffff, \
> + EFCT_DWORD_2, 0xffffffff, \
> + EFCT_DWORD_3, 0xffffffff)
> +
> +/* Populate a quadword field with various numbers of arguments */
> +#define EFCT_POPULATE_QWORD_10 EFCT_POPULATE_QWORD
> +#define EFCT_POPULATE_QWORD_9(qword, ...) \
> + EFCT_POPULATE_QWORD_10(qword, EFCT_DUMMY_FIELD, 0, __VA_ARGS__)
> +#define EFCT_POPULATE_QWORD_8(qword, ...) \
> + EFCT_POPULATE_QWORD_9(qword, EFCT_DUMMY_FIELD, 0, __VA_ARGS__)
> +#define EFCT_POPULATE_QWORD_7(qword, ...) \
> + EFCT_POPULATE_QWORD_8(qword, EFCT_DUMMY_FIELD, 0, __VA_ARGS__)
> +#define EFCT_POPULATE_QWORD_6(qword, ...) \
> + EFCT_POPULATE_QWORD_7(qword, EFCT_DUMMY_FIELD, 0, __VA_ARGS__)
> +#define EFCT_POPULATE_QWORD_5(qword, ...) \
> + EFCT_POPULATE_QWORD_6(qword, EFCT_DUMMY_FIELD, 0, __VA_ARGS__)
> +#define EFCT_POPULATE_QWORD_4(qword, ...) \
> + EFCT_POPULATE_QWORD_5(qword, EFCT_DUMMY_FIELD, 0, __VA_ARGS__)
> +#define EFCT_POPULATE_QWORD_3(qword, ...) \
> + EFCT_POPULATE_QWORD_4(qword, EFCT_DUMMY_FIELD, 0, __VA_ARGS__)
> +#define EFCT_POPULATE_QWORD_2(qword, ...) \
> + EFCT_POPULATE_QWORD_3(qword, EFCT_DUMMY_FIELD, 0, __VA_ARGS__)
> +#define EFCT_POPULATE_QWORD_1(qword, ...) \
> + EFCT_POPULATE_QWORD_2(qword, EFCT_DUMMY_FIELD, 0, __VA_ARGS__)
> +#define EFCT_ZERO_QWORD(qword) \
> + EFCT_POPULATE_QWORD_1(qword, EFCT_DUMMY_FIELD, 0)
> +#define EFCT_SET_QWORD(qword) \
> + EFCT_POPULATE_QWORD_2(qword, \
> + EFCT_DWORD_0, 0xffffffff, \
> + EFCT_DWORD_1, 0xffffffff)
> +/* Populate a dword field with various numbers of arguments */
> +#define EFCT_POPULATE_DWORD_10 EFCT_POPULATE_DWORD
> +#define EFCT_POPULATE_DWORD_9(dword, ...) \
> + EFCT_POPULATE_DWORD_10(dword, EFCT_DUMMY_FIELD, 0, __VA_ARGS__)
> +#define EFCT_POPULATE_DWORD_8(dword, ...) \
> + EFCT_POPULATE_DWORD_9(dword, EFCT_DUMMY_FIELD, 0, __VA_ARGS__)
> +#define EFCT_POPULATE_DWORD_7(dword, ...) \
> + EFCT_POPULATE_DWORD_8(dword, EFCT_DUMMY_FIELD, 0, __VA_ARGS__)
> +#define EFCT_POPULATE_DWORD_6(dword, ...) \
> + EFCT_POPULATE_DWORD_7(dword, EFCT_DUMMY_FIELD, 0, __VA_ARGS__)
> +#define EFCT_POPULATE_DWORD_5(dword, ...) \
> + EFCT_POPULATE_DWORD_6(dword, EFCT_DUMMY_FIELD, 0, __VA_ARGS__)
> +#define EFCT_POPULATE_DWORD_4(dword, ...) \
> + EFCT_POPULATE_DWORD_5(dword, EFCT_DUMMY_FIELD, 0, __VA_ARGS__)
> +#define EFCT_POPULATE_DWORD_3(dword, ...) \
> + EFCT_POPULATE_DWORD_4(dword, EFCT_DUMMY_FIELD, 0, __VA_ARGS__)
> +#define EFCT_POPULATE_DWORD_2(dword, ...) \
> + EFCT_POPULATE_DWORD_3(dword, EFCT_DUMMY_FIELD, 0, __VA_ARGS__)
> +#define EFCT_POPULATE_DWORD_1(dword, ...) \
> + EFCT_POPULATE_DWORD_2(dword, EFCT_DUMMY_FIELD, 0, __VA_ARGS__)
> +#define EFCT_ZERO_DWORD(dword) \
> + EFCT_POPULATE_DWORD_1(dword, EFCT_DUMMY_FIELD, 0)
> +#define EFCT_SET_DWORD(dword) \
> + EFCT_POPULATE_DWORD_1(dword, EFCT_DWORD_0, 0xffffffff)
> +
> +/* Modify a named field within an already-populated structure. Used
> + * for read-modify-write operations.
> + */
> +
> +#define EFCT_INSERT64(min, max, low, high, value) \
> + cpu_to_le64(EFCT_INSERT_NATIVE(min, max, low, high, value))
> +
> +#define EFCT_INSERT32(min, max, low, high, value) \
> + cpu_to_le32(EFCT_INSERT_NATIVE(min, max, low, high, value))
> +
> +#define EFCT_INPLACE_MASK64(min, max, low, high) \
> + EFCT_INSERT64(min, max, low, high, EFCT_MASK64((high) + 1 - (low)))
> +
> +#define EFCT_INPLACE_MASK32(min, max, low, high) \
> + EFCT_INSERT32(min, max, low, high, EFCT_MASK32((high) + 1 - (low)))
> +
> +#define EFCT_SET_OWORD64(oword, low, high, value) do { \
> + (oword).u64[0] = (((oword).u64[0] \
> + & ~EFCT_INPLACE_MASK64(0, 63, low, high)) \
> + | EFCT_INSERT64(0, 63, low, high, value)); \
> + (oword).u64[1] = (((oword).u64[1] \
> + & ~EFCT_INPLACE_MASK64(64, 127, low, high)) \
> + | EFCT_INSERT64(64, 127, low, high, value)); \
> + } while (0)
> +
> +#define EFCT_SET_QWORD64(qword, low, high, value) \
> + (qword).u64[0] = (((qword).u64[0] \
> + & ~EFCT_INPLACE_MASK64(0, 63, low, high)) \
> + | EFCT_INSERT64(0, 63, low, high, value)) \
> +
> +#define EFCT_SET_OWORD32(oword, low, high, value) do { \
> + (oword).u32[0] = (((oword).u32[0] \
> + & ~EFCT_INPLACE_MASK32(0, 31, low, high)) \
> + | EFCT_INSERT32(0, 31, low, high, value)); \
> + (oword).u32[1] = (((oword).u32[1] \
> + & ~EFCT_INPLACE_MASK32(32, 63, low, high)) \
> + | EFCT_INSERT32(32, 63, low, high, value)); \
> + (oword).u32[2] = (((oword).u32[2] \
> + & ~EFCT_INPLACE_MASK32(64, 95, low, high)) \
> + | EFCT_INSERT32(64, 95, low, high, value)); \
> + (oword).u32[3] = (((oword).u32[3] \
> + & ~EFCT_INPLACE_MASK32(96, 127, low, high)) \
> + | EFCT_INSERT32(96, 127, low, high, value)); \
> + } while (0)
> +
> +#define EFCT_SET_QWORD32(qword, low, high, value) do { \
> + (qword).u32[0] = (((qword).u32[0] \
> + & ~EFCT_INPLACE_MASK32(0, 31, low, high)) \
> + | EFCT_INSERT32(0, 31, low, high, value)); \
> + (qword).u32[1] = (((qword).u32[1] \
> + & ~EFCT_INPLACE_MASK32(32, 63, low, high)) \
> + | EFCT_INSERT32(32, 63, low, high, value)); \
> + } while (0)
> +
> +#define EFCT_SET_DWORD32(dword, low, high, value) \
> + (dword).word32 = (((dword).word32 \
> + & ~EFCT_INPLACE_MASK32(0, 31, low, high)) \
> + | EFCT_INSERT32(0, 31, low, high, value)) \
> +
> +#define EFCT_SET_OWORD_FIELD64(oword, field, value) \
> + EFCT_SET_OWORD64(oword, EFCT_LOW_BIT(field), \
> + EFCT_HIGH_BIT(field), value)
> +
> +#define EFCT_SET_QWORD_FIELD64(qword, field, value) \
> + EFCT_SET_QWORD64(qword, EFCT_LOW_BIT(field), \
> + EFCT_HIGH_BIT(field), value)
> +
> +#define EFCT_SET_OWORD_FIELD32(oword, field, value) \
> + EFCT_SET_OWORD32(oword, EFCT_LOW_BIT(field), \
> + EFCT_HIGH_BIT(field), value)
> +
> +#define EFCT_SET_QWORD_FIELD32(qword, field, value) \
> + EFCT_SET_QWORD32(qword, EFCT_LOW_BIT(field), \
> + EFCT_HIGH_BIT(field), value)
> +
> +#define EFCT_SET_DWORD_FIELD(dword, field, value) \
> + EFCT_SET_DWORD32(dword, EFCT_LOW_BIT(field), \
> + EFCT_HIGH_BIT(field), value)
> +
> +#if BITS_PER_LONG == 64
> +#define EFCT_SET_OWORD_FIELD EFCT_SET_OWORD_FIELD64
> +#define EFCT_SET_QWORD_FIELD EFCT_SET_QWORD_FIELD64
> +#else
> +#define EFCT_SET_OWORD_FIELD EFCT_SET_OWORD_FIELD32
> +#define EFCT_SET_QWORD_FIELD EFCT_SET_QWORD_FIELD32
> +#endif
EFCT_SET_OWORD_FIELD and EFCT_SET_QWORD_FIELD are appear to
be unused in this patchst. I did not look carefully for other
unused defines.
> +
> +/* Static initialiser */
> +#define EFCT_OWORD32(a, b, c, d) \
> + { .u32 = { cpu_to_le32(a), cpu_to_le32(b), \
> + cpu_to_le32(c), cpu_to_le32(d) } }
> +
> +#endif /* EFCT_BITFIELD_H */
I'm stopping my review here (because I've run out of time for now).
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