mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-19 01:07:09 +07:00
6396bb2215
The kzalloc() function has a 2-factor argument form, kcalloc(). This
patch replaces cases of:
kzalloc(a * b, gfp)
with:
kcalloc(a * b, gfp)
as well as handling cases of:
kzalloc(a * b * c, gfp)
with:
kzalloc(array3_size(a, b, c), gfp)
as it's slightly less ugly than:
kzalloc_array(array_size(a, b), c, gfp)
This does, however, attempt to ignore constant size factors like:
kzalloc(4 * 1024, gfp)
though any constants defined via macros get caught up in the conversion.
Any factors with a sizeof() of "unsigned char", "char", and "u8" were
dropped, since they're redundant.
The Coccinelle script used for this was:
// Fix redundant parens around sizeof().
@@
type TYPE;
expression THING, E;
@@
(
kzalloc(
- (sizeof(TYPE)) * E
+ sizeof(TYPE) * E
, ...)
|
kzalloc(
- (sizeof(THING)) * E
+ sizeof(THING) * E
, ...)
)
// Drop single-byte sizes and redundant parens.
@@
expression COUNT;
typedef u8;
typedef __u8;
@@
(
kzalloc(
- sizeof(u8) * (COUNT)
+ COUNT
, ...)
|
kzalloc(
- sizeof(__u8) * (COUNT)
+ COUNT
, ...)
|
kzalloc(
- sizeof(char) * (COUNT)
+ COUNT
, ...)
|
kzalloc(
- sizeof(unsigned char) * (COUNT)
+ COUNT
, ...)
|
kzalloc(
- sizeof(u8) * COUNT
+ COUNT
, ...)
|
kzalloc(
- sizeof(__u8) * COUNT
+ COUNT
, ...)
|
kzalloc(
- sizeof(char) * COUNT
+ COUNT
, ...)
|
kzalloc(
- sizeof(unsigned char) * COUNT
+ COUNT
, ...)
)
// 2-factor product with sizeof(type/expression) and identifier or constant.
@@
type TYPE;
expression THING;
identifier COUNT_ID;
constant COUNT_CONST;
@@
(
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * (COUNT_ID)
+ COUNT_ID, sizeof(TYPE)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * COUNT_ID
+ COUNT_ID, sizeof(TYPE)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * (COUNT_CONST)
+ COUNT_CONST, sizeof(TYPE)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * COUNT_CONST
+ COUNT_CONST, sizeof(TYPE)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * (COUNT_ID)
+ COUNT_ID, sizeof(THING)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * COUNT_ID
+ COUNT_ID, sizeof(THING)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * (COUNT_CONST)
+ COUNT_CONST, sizeof(THING)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * COUNT_CONST
+ COUNT_CONST, sizeof(THING)
, ...)
)
// 2-factor product, only identifiers.
@@
identifier SIZE, COUNT;
@@
- kzalloc
+ kcalloc
(
- SIZE * COUNT
+ COUNT, SIZE
, ...)
// 3-factor product with 1 sizeof(type) or sizeof(expression), with
// redundant parens removed.
@@
expression THING;
identifier STRIDE, COUNT;
type TYPE;
@@
(
kzalloc(
- sizeof(TYPE) * (COUNT) * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
kzalloc(
- sizeof(TYPE) * (COUNT) * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
kzalloc(
- sizeof(TYPE) * COUNT * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
kzalloc(
- sizeof(TYPE) * COUNT * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
kzalloc(
- sizeof(THING) * (COUNT) * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
kzalloc(
- sizeof(THING) * (COUNT) * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
kzalloc(
- sizeof(THING) * COUNT * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
kzalloc(
- sizeof(THING) * COUNT * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
)
// 3-factor product with 2 sizeof(variable), with redundant parens removed.
@@
expression THING1, THING2;
identifier COUNT;
type TYPE1, TYPE2;
@@
(
kzalloc(
- sizeof(TYPE1) * sizeof(TYPE2) * COUNT
+ array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
, ...)
|
kzalloc(
- sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
, ...)
|
kzalloc(
- sizeof(THING1) * sizeof(THING2) * COUNT
+ array3_size(COUNT, sizeof(THING1), sizeof(THING2))
, ...)
|
kzalloc(
- sizeof(THING1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(THING1), sizeof(THING2))
, ...)
|
kzalloc(
- sizeof(TYPE1) * sizeof(THING2) * COUNT
+ array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
, ...)
|
kzalloc(
- sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
, ...)
)
// 3-factor product, only identifiers, with redundant parens removed.
@@
identifier STRIDE, SIZE, COUNT;
@@
(
kzalloc(
- (COUNT) * STRIDE * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- COUNT * (STRIDE) * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- COUNT * STRIDE * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- (COUNT) * (STRIDE) * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- COUNT * (STRIDE) * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- (COUNT) * STRIDE * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- (COUNT) * (STRIDE) * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- COUNT * STRIDE * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
)
// Any remaining multi-factor products, first at least 3-factor products,
// when they're not all constants...
@@
expression E1, E2, E3;
constant C1, C2, C3;
@@
(
kzalloc(C1 * C2 * C3, ...)
|
kzalloc(
- (E1) * E2 * E3
+ array3_size(E1, E2, E3)
, ...)
|
kzalloc(
- (E1) * (E2) * E3
+ array3_size(E1, E2, E3)
, ...)
|
kzalloc(
- (E1) * (E2) * (E3)
+ array3_size(E1, E2, E3)
, ...)
|
kzalloc(
- E1 * E2 * E3
+ array3_size(E1, E2, E3)
, ...)
)
// And then all remaining 2 factors products when they're not all constants,
// keeping sizeof() as the second factor argument.
@@
expression THING, E1, E2;
type TYPE;
constant C1, C2, C3;
@@
(
kzalloc(sizeof(THING) * C2, ...)
|
kzalloc(sizeof(TYPE) * C2, ...)
|
kzalloc(C1 * C2 * C3, ...)
|
kzalloc(C1 * C2, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * (E2)
+ E2, sizeof(TYPE)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * E2
+ E2, sizeof(TYPE)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * (E2)
+ E2, sizeof(THING)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * E2
+ E2, sizeof(THING)
, ...)
|
- kzalloc
+ kcalloc
(
- (E1) * E2
+ E1, E2
, ...)
|
- kzalloc
+ kcalloc
(
- (E1) * (E2)
+ E1, E2
, ...)
|
- kzalloc
+ kcalloc
(
- E1 * E2
+ E1, E2
, ...)
)
Signed-off-by: Kees Cook <keescook@chromium.org>
372 lines
8.1 KiB
C
372 lines
8.1 KiB
C
/*
|
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* ff-protocol-ff400.c - a part of driver for RME Fireface series
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*
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* Copyright (c) 2015-2017 Takashi Sakamoto
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*
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* Licensed under the terms of the GNU General Public License, version 2.
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*/
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#include <linux/delay.h>
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#include "ff.h"
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#define FF400_STF 0x000080100500ull
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#define FF400_RX_PACKET_FORMAT 0x000080100504ull
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#define FF400_ISOC_COMM_START 0x000080100508ull
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#define FF400_TX_PACKET_FORMAT 0x00008010050cull
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#define FF400_ISOC_COMM_STOP 0x000080100510ull
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#define FF400_SYNC_STATUS 0x0000801c0000ull
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#define FF400_FETCH_PCM_FRAMES 0x0000801c0000ull /* For block request. */
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#define FF400_CLOCK_CONFIG 0x0000801c0004ull
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#define FF400_MIDI_HIGH_ADDR 0x0000801003f4ull
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#define FF400_MIDI_RX_PORT_0 0x000080180000ull
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#define FF400_MIDI_RX_PORT_1 0x000080190000ull
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static int ff400_get_clock(struct snd_ff *ff, unsigned int *rate,
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enum snd_ff_clock_src *src)
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{
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__le32 reg;
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u32 data;
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int err;
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err = snd_fw_transaction(ff->unit, TCODE_READ_QUADLET_REQUEST,
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FF400_SYNC_STATUS, ®, sizeof(reg), 0);
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if (err < 0)
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return err;
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data = le32_to_cpu(reg);
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/* Calculate sampling rate. */
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switch ((data >> 1) & 0x03) {
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case 0x01:
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*rate = 32000;
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break;
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case 0x00:
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*rate = 44100;
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break;
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case 0x03:
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*rate = 48000;
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break;
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case 0x02:
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default:
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return -EIO;
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}
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if (data & 0x08)
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*rate *= 2;
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else if (data & 0x10)
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*rate *= 4;
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/* Calculate source of clock. */
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if (data & 0x01) {
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*src = SND_FF_CLOCK_SRC_INTERNAL;
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} else {
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/* TODO: 0x00, 0x01, 0x02, 0x06, 0x07? */
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switch ((data >> 10) & 0x07) {
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case 0x03:
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*src = SND_FF_CLOCK_SRC_SPDIF;
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break;
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case 0x04:
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*src = SND_FF_CLOCK_SRC_WORD;
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break;
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case 0x05:
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*src = SND_FF_CLOCK_SRC_LTC;
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break;
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case 0x00:
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default:
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*src = SND_FF_CLOCK_SRC_ADAT;
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break;
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}
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}
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return 0;
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}
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static int ff400_begin_session(struct snd_ff *ff, unsigned int rate)
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{
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__le32 reg;
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int i, err;
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/* Check whether the given value is supported or not. */
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for (i = 0; i < CIP_SFC_COUNT; i++) {
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if (amdtp_rate_table[i] == rate)
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break;
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}
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if (i == CIP_SFC_COUNT)
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return -EINVAL;
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/* Set the number of data blocks transferred in a second. */
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reg = cpu_to_le32(rate);
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err = snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,
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FF400_STF, ®, sizeof(reg), 0);
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if (err < 0)
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return err;
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msleep(100);
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/*
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* Set isochronous channel and the number of quadlets of received
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* packets.
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*/
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reg = cpu_to_le32(((ff->rx_stream.data_block_quadlets << 3) << 8) |
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ff->rx_resources.channel);
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err = snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,
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FF400_RX_PACKET_FORMAT, ®, sizeof(reg), 0);
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if (err < 0)
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return err;
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/*
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* Set isochronous channel and the number of quadlets of transmitted
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* packet.
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*/
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/* TODO: investigate the purpose of this 0x80. */
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reg = cpu_to_le32((0x80 << 24) |
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(ff->tx_resources.channel << 5) |
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(ff->tx_stream.data_block_quadlets));
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err = snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,
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FF400_TX_PACKET_FORMAT, ®, sizeof(reg), 0);
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if (err < 0)
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return err;
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/* Allow to transmit packets. */
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reg = cpu_to_le32(0x00000001);
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return snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,
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FF400_ISOC_COMM_START, ®, sizeof(reg), 0);
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}
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static void ff400_finish_session(struct snd_ff *ff)
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{
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__le32 reg;
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reg = cpu_to_le32(0x80000000);
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snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,
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FF400_ISOC_COMM_STOP, ®, sizeof(reg), 0);
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}
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static int ff400_switch_fetching_mode(struct snd_ff *ff, bool enable)
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{
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__le32 *reg;
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int i;
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reg = kcalloc(18, sizeof(__le32), GFP_KERNEL);
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if (reg == NULL)
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return -ENOMEM;
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if (enable) {
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/*
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* Each quadlet is corresponding to data channels in a data
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* blocks in reverse order. Precisely, quadlets for available
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* data channels should be enabled. Here, I take second best
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* to fetch PCM frames from all of data channels regardless of
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* stf.
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*/
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for (i = 0; i < 18; ++i)
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reg[i] = cpu_to_le32(0x00000001);
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}
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return snd_fw_transaction(ff->unit, TCODE_WRITE_BLOCK_REQUEST,
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FF400_FETCH_PCM_FRAMES, reg,
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sizeof(__le32) * 18, 0);
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}
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static void ff400_dump_sync_status(struct snd_ff *ff,
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struct snd_info_buffer *buffer)
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{
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__le32 reg;
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u32 data;
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int err;
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err = snd_fw_transaction(ff->unit, TCODE_READ_QUADLET_REQUEST,
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FF400_SYNC_STATUS, ®, sizeof(reg), 0);
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if (err < 0)
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return;
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data = le32_to_cpu(reg);
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snd_iprintf(buffer, "External source detection:\n");
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snd_iprintf(buffer, "Word Clock:");
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if ((data >> 24) & 0x20) {
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if ((data >> 24) & 0x40)
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snd_iprintf(buffer, "sync\n");
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else
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snd_iprintf(buffer, "lock\n");
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} else {
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snd_iprintf(buffer, "none\n");
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}
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snd_iprintf(buffer, "S/PDIF:");
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if ((data >> 16) & 0x10) {
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if ((data >> 16) & 0x04)
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snd_iprintf(buffer, "sync\n");
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else
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snd_iprintf(buffer, "lock\n");
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} else {
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snd_iprintf(buffer, "none\n");
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}
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snd_iprintf(buffer, "ADAT:");
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if ((data >> 8) & 0x04) {
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if ((data >> 8) & 0x10)
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snd_iprintf(buffer, "sync\n");
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else
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snd_iprintf(buffer, "lock\n");
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} else {
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snd_iprintf(buffer, "none\n");
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}
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snd_iprintf(buffer, "\nUsed external source:\n");
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if (((data >> 22) & 0x07) == 0x07) {
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snd_iprintf(buffer, "None\n");
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} else {
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switch ((data >> 22) & 0x07) {
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case 0x00:
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snd_iprintf(buffer, "ADAT:");
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break;
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case 0x03:
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snd_iprintf(buffer, "S/PDIF:");
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break;
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case 0x04:
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snd_iprintf(buffer, "Word:");
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break;
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case 0x07:
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snd_iprintf(buffer, "Nothing:");
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break;
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case 0x01:
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case 0x02:
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case 0x05:
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case 0x06:
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default:
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snd_iprintf(buffer, "unknown:");
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break;
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}
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if ((data >> 25) & 0x07) {
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switch ((data >> 25) & 0x07) {
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case 0x01:
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snd_iprintf(buffer, "32000\n");
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break;
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case 0x02:
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snd_iprintf(buffer, "44100\n");
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break;
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case 0x03:
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snd_iprintf(buffer, "48000\n");
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break;
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case 0x04:
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snd_iprintf(buffer, "64000\n");
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break;
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case 0x05:
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snd_iprintf(buffer, "88200\n");
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break;
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case 0x06:
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snd_iprintf(buffer, "96000\n");
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break;
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case 0x07:
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snd_iprintf(buffer, "128000\n");
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break;
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case 0x08:
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snd_iprintf(buffer, "176400\n");
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break;
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case 0x09:
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snd_iprintf(buffer, "192000\n");
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break;
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case 0x00:
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snd_iprintf(buffer, "unknown\n");
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break;
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}
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}
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}
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snd_iprintf(buffer, "Multiplied:");
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snd_iprintf(buffer, "%d\n", (data & 0x3ff) * 250);
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}
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static void ff400_dump_clock_config(struct snd_ff *ff,
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struct snd_info_buffer *buffer)
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{
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__le32 reg;
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u32 data;
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unsigned int rate;
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const char *src;
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int err;
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err = snd_fw_transaction(ff->unit, TCODE_READ_BLOCK_REQUEST,
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FF400_CLOCK_CONFIG, ®, sizeof(reg), 0);
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if (err < 0)
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return;
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data = le32_to_cpu(reg);
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snd_iprintf(buffer, "Output S/PDIF format: %s (Emphasis: %s)\n",
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(data & 0x20) ? "Professional" : "Consumer",
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(data & 0x40) ? "on" : "off");
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snd_iprintf(buffer, "Optical output interface format: %s\n",
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((data >> 8) & 0x01) ? "S/PDIF" : "ADAT");
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snd_iprintf(buffer, "Word output single speed: %s\n",
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((data >> 8) & 0x20) ? "on" : "off");
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snd_iprintf(buffer, "S/PDIF input interface: %s\n",
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((data >> 8) & 0x02) ? "Optical" : "Coaxial");
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switch ((data >> 1) & 0x03) {
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case 0x01:
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rate = 32000;
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break;
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case 0x00:
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rate = 44100;
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break;
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case 0x03:
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rate = 48000;
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break;
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case 0x02:
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default:
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return;
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}
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if (data & 0x08)
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rate *= 2;
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else if (data & 0x10)
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rate *= 4;
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snd_iprintf(buffer, "Sampling rate: %d\n", rate);
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if (data & 0x01) {
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src = "Internal";
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} else {
|
|
switch ((data >> 10) & 0x07) {
|
|
case 0x00:
|
|
src = "ADAT";
|
|
break;
|
|
case 0x03:
|
|
src = "S/PDIF";
|
|
break;
|
|
case 0x04:
|
|
src = "Word";
|
|
break;
|
|
case 0x05:
|
|
src = "LTC";
|
|
break;
|
|
default:
|
|
return;
|
|
}
|
|
}
|
|
|
|
snd_iprintf(buffer, "Sync to clock source: %s\n", src);
|
|
}
|
|
|
|
const struct snd_ff_protocol snd_ff_protocol_ff400 = {
|
|
.get_clock = ff400_get_clock,
|
|
.begin_session = ff400_begin_session,
|
|
.finish_session = ff400_finish_session,
|
|
.switch_fetching_mode = ff400_switch_fetching_mode,
|
|
|
|
.dump_sync_status = ff400_dump_sync_status,
|
|
.dump_clock_config = ff400_dump_clock_config,
|
|
|
|
.midi_high_addr_reg = FF400_MIDI_HIGH_ADDR,
|
|
.midi_rx_port_0_reg = FF400_MIDI_RX_PORT_0,
|
|
.midi_rx_port_1_reg = FF400_MIDI_RX_PORT_1,
|
|
};
|