mmio: Add clrsetbitsXX() API in place of updateX()

This patch removes the recently added update8/16/32/64() API and
replaces it with clrsetbits8/16/32/64(). This is more in line with the
existing endian-specific clrsetbits_le16/32/64() functions that have
been used for this task on some platforms already. Rename clrsetbits_8()
to clrsetbits8() to be in line with the new naming.

Keep this stuff in <device/mmio.h> and get rid of <mmio.h> again because
having both is confusing and we seem to have been standardizing on
<device/mmio.h> as the standard arch-independent header that all
platforms should include already.

Also sync libpayload back up with what we have in coreboot. (I'm the
original author of the clrsetbits_le32-definitions so I'm relicensing
them to BSD here.)

Change-Id: Ie4f7b9fdbdf9e8c0174427b4288f79006d56978b
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/37432
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Julius Werner 2019-12-02 18:02:51 -08:00 committed by Patrick Georgi
parent 41fe62b6dc
commit 1c37157218
5 changed files with 62 additions and 65 deletions

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@ -181,18 +181,47 @@ static inline void le32enc(void *pp, uint32_t u)
/* Handy bit manipulation macros */
#define clrsetbits_le32(addr, clear, set) writel(htole32((le32toh(readl(addr)) \
& ~(clear)) | (set)), (addr))
#define setbits_le32(addr, set) writel(htole32(le32toh(readl(addr)) \
| (set)), (addr))
#define clrbits_le32(addr, clear) writel(htole32(le32toh(readl(addr)) \
& ~(clear)), (addr))
#define __clrsetbits(endian, bits, addr, clear, set) \
write##bits(addr, hto##endian##bits((endian##bits##toh( \
read##bits(addr)) & ~((uint##bits##_t)(clear))) | (set)))
#define clrsetbits_be32(addr, clear, set) writel(htobe32((be32toh(readl(addr)) \
& ~(clear)) | (set)), (addr))
#define setbits_be32(addr, set) writel(htobe32(be32toh(readl(addr)) \
| (set)), (addr))
#define clrbits_be32(addr, clear) writel(htobe32(be32toh(readl(addr)) \
& ~(clear)), (addr))
#define clrbits_le64(addr, clear) __clrsetbits(le, 64, addr, clear, 0)
#define clrbits_be64(addr, clear) __clrsetbits(be, 64, addr, clear, 0)
#define clrbits_le32(addr, clear) __clrsetbits(le, 32, addr, clear, 0)
#define clrbits_be32(addr, clear) __clrsetbits(be, 32, addr, clear, 0)
#define clrbits_le16(addr, clear) __clrsetbits(le, 16, addr, clear, 0)
#define clrbits_be16(addr, clear) __clrsetbits(be, 16, addr, clear, 0)
#define setbits_le64(addr, set) __clrsetbits(le, 64, addr, 0, set)
#define setbits_be64(addr, set) __clrsetbits(be, 64, addr, 0, set)
#define setbits_le32(addr, set) __clrsetbits(le, 32, addr, 0, set)
#define setbits_be32(addr, set) __clrsetbits(be, 32, addr, 0, set)
#define setbits_le16(addr, set) __clrsetbits(le, 16, addr, 0, set)
#define setbits_be16(addr, set) __clrsetbits(be, 16, addr, 0, set)
#define clrsetbits_le64(addr, clear, set) __clrsetbits(le, 64, addr, clear, set)
#define clrsetbits_be64(addr, clear, set) __clrsetbits(be, 64, addr, clear, set)
#define clrsetbits_le32(addr, clear, set) __clrsetbits(le, 32, addr, clear, set)
#define clrsetbits_be32(addr, clear, set) __clrsetbits(be, 32, addr, clear, set)
#define clrsetbits_le16(addr, clear, set) __clrsetbits(le, 16, addr, clear, set)
#define clrsetbits_be16(addr, clear, set) __clrsetbits(be, 16, addr, clear, set)
#define __clrsetbits_impl(bits, addr, clear, set) write##bits(addr, \
(read##bits(addr) & ~((uint##bits##_t)(clear))) | (set))
#define clrsetbits8(addr, clear, set) __clrsetbits_impl(8, addr, clear, set)
#define clrsetbits16(addr, clear, set) __clrsetbits_impl(16, addr, clear, set)
#define clrsetbits32(addr, clear, set) __clrsetbits_impl(32, addr, clear, set)
#define clrsetbits64(addr, clear, set) __clrsetbits_impl(64, addr, clear, set)
#define setbits8(addr, set) clrsetbits8(addr, 0, set)
#define setbits16(addr, set) clrsetbits16(addr, 0, set)
#define setbits32(addr, set) clrsetbits32(addr, 0, set)
#define setbits64(addr, set) clrsetbits64(addr, 0, set)
#define clrbits8(addr, clear) clrsetbits8(addr, clear, 0)
#define clrbits16(addr, clear) clrsetbits16(addr, clear, 0)
#define clrbits32(addr, clear) clrsetbits32(addr, clear, 0)
#define clrbits64(addr, clear) clrsetbits64(addr, clear, 0)
#endif /* _ENDIAN_H_ */

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@ -127,10 +127,10 @@ static int max77686_enablereg(unsigned int bus, enum max77686_regnum reg, int en
}
if (enable == REG_DISABLE) {
clrbits_8(&read_data,
clrbits8(&read_data,
pmic->reg_enbitmask << pmic->reg_enbitpos);
} else {
clrsetbits_8(&read_data,
clrsetbits8(&read_data,
pmic->reg_enbitmask << pmic->reg_enbitpos,
pmic->reg_enbiton << pmic->reg_enbitpos);
}
@ -177,7 +177,7 @@ int max77686_volsetting(unsigned int bus, enum max77686_regnum reg,
}
vol_level /= (u32)pmic->vol_div;
clrsetbits_8(&read_data, pmic->vol_bitmask << pmic->vol_bitpos,
clrsetbits8(&read_data, pmic->vol_bitmask << pmic->vol_bitpos,
vol_level << pmic->vol_bitpos);
ret = max77686_i2c_write(bus, MAX77686_I2C_ADDR, pmic->vol_addr, read_data);

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@ -19,6 +19,24 @@
#include <endian.h>
#include <types.h>
#define __clrsetbits_impl(bits, addr, clear, set) write##bits(addr, \
(read##bits(addr) & ~((uint##bits##_t)(clear))) | (set))
#define clrsetbits8(addr, clear, set) __clrsetbits_impl(8, addr, clear, set)
#define clrsetbits16(addr, clear, set) __clrsetbits_impl(16, addr, clear, set)
#define clrsetbits32(addr, clear, set) __clrsetbits_impl(32, addr, clear, set)
#define clrsetbits64(addr, clear, set) __clrsetbits_impl(64, addr, clear, set)
#define setbits8(addr, set) clrsetbits8(addr, 0, set)
#define setbits16(addr, set) clrsetbits16(addr, 0, set)
#define setbits32(addr, set) clrsetbits32(addr, 0, set)
#define setbits64(addr, set) clrsetbits64(addr, 0, set)
#define clrbits8(addr, clear) clrsetbits8(addr, clear, 0)
#define clrbits16(addr, clear) clrsetbits16(addr, clear, 0)
#define clrbits32(addr, clear) clrsetbits32(addr, clear, 0)
#define clrbits64(addr, clear) clrsetbits64(addr, clear, 0)
#ifndef __ROMCC__
/*
* Reads a transfer buffer from 32-bit FIFO registers. fifo_stride is the

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@ -79,11 +79,6 @@
#define clrsetbits_le16(addr, clear, set) __clrsetbits(le, 16, addr, clear, set)
#define clrsetbits_be16(addr, clear, set) __clrsetbits(be, 16, addr, clear, set)
#define clrsetbits_8(addr, clear, set) \
write8(addr, (read8(addr) & ~(clear)) | (set))
#define clrbits_8(addr, clear) clrsetbits_8(addr, clear, 0)
#define setbits_8(addr, set) setbits_8(addr, 0, set)
#ifndef __ROMCC__
/* be16dec/be32dec/be64dec/le16dec/le32dec/le64dec family of functions. */
#define DEFINE_ENDIAN_DEC(endian, width) \

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@ -1,45 +0,0 @@
/*
* This file is part of the coreboot project.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
/*
* mmio.h provides update*() as well as read/write*() from arch/mmio.h
*/
#ifndef __MMIO_H__
#define __MMIO_H__
#include <arch/mmio.h>
#include <stdint.h>
static __always_inline void update8(volatile void *addr, uint8_t mask, uint8_t or)
{
uint8_t reg = read8(addr);
reg = (reg & mask) | or;
write8(addr, reg);
}
static __always_inline void update16(volatile void *addr, uint16_t mask, uint16_t or)
{
uint16_t reg = read16(addr);
reg = (reg & mask) | or;
write16(addr, reg);
}
static __always_inline void update32(volatile void *addr, uint32_t mask, uint32_t or)
{
uint32_t reg = read32(addr);
reg = (reg & mask) | or;
write32(addr, reg);
}
#endif /* __MMIO_H__ */