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ALSA: hda/core: add addr_offset field for bus address translation 

Add bus addr_offset field for dma address translation,
for some SoCs such as CIX SKY1 which is ARM64 Arch, HOST
and HDAC has different memory view, so need to do dma address
translation between HOST and HDAC.

Signed-off-by: Joakim Zhang <joakim.zhang@cixtech.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://patch.msgid.link/20251205154621.3019640-3-joakim.zhang@cixtech.com
pull/1354/merge
Joakim Zhang 2025-12-05 23:46:20 +08:00 committed by Takashi Iwai
parent 85a6544777
commit a4f2fa516e
4 changed files with 15 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
include/sound/hdaudio.h
View File

@ -380,6 +380,9 @@ struct hdac_bus {
/* factor used to derive STRIPE control value */
unsigned int sdo_limit;
/* address offset between host and hadc */
dma_addr_t addr_offset;
};
int snd_hdac_bus_init(struct hdac_bus *bus, struct device *dev,

1
sound/hda/core/bus.c
View File

@ -47,6 +47,7 @@ int snd_hdac_bus_init(struct hdac_bus *bus, struct device *dev,
INIT_LIST_HEAD(&bus->hlink_list);
init_waitqueue_head(&bus->rirb_wq);
bus->irq = -1;
bus->addr_offset = 0;
/*
* Default value of '8' is as per the HD audio specification (Rev 1.0a).

12
sound/hda/core/controller.c
View File

@ -48,8 +48,8 @@ void snd_hdac_bus_init_cmd_io(struct hdac_bus *bus)
/* CORB set up */
bus->corb.addr = bus->rb.addr;
bus->corb.buf = (__le32 *)bus->rb.area;
snd_hdac_chip_writel(bus, CORBLBASE, (u32)bus->corb.addr);
snd_hdac_chip_writel(bus, CORBUBASE, upper_32_bits(bus->corb.addr));
snd_hdac_chip_writel(bus, CORBLBASE, (u32)(bus->corb.addr + bus->addr_offset));
snd_hdac_chip_writel(bus, CORBUBASE, upper_32_bits(bus->corb.addr + bus->addr_offset));
/* set the corb size to 256 entries (ULI requires explicitly) */
snd_hdac_chip_writeb(bus, CORBSIZE, 0x02);
@ -70,8 +70,8 @@ void snd_hdac_bus_init_cmd_io(struct hdac_bus *bus)
bus->rirb.buf = (__le32 *)(bus->rb.area + 2048);
bus->rirb.wp = bus->rirb.rp = 0;
memset(bus->rirb.cmds, 0, sizeof(bus->rirb.cmds));
snd_hdac_chip_writel(bus, RIRBLBASE, (u32)bus->rirb.addr);
snd_hdac_chip_writel(bus, RIRBUBASE, upper_32_bits(bus->rirb.addr));
snd_hdac_chip_writel(bus, RIRBLBASE, (u32)(bus->rirb.addr + bus->addr_offset));
snd_hdac_chip_writel(bus, RIRBUBASE, upper_32_bits(bus->rirb.addr + bus->addr_offset));
/* set the rirb size to 256 entries (ULI requires explicitly) */
snd_hdac_chip_writeb(bus, RIRBSIZE, 0x02);
@ -625,8 +625,8 @@ bool snd_hdac_bus_init_chip(struct hdac_bus *bus, bool full_reset)
/* program the position buffer */
if (bus->use_posbuf && bus->posbuf.addr) {
snd_hdac_chip_writel(bus, DPLBASE, (u32)bus->posbuf.addr);
snd_hdac_chip_writel(bus, DPUBASE, upper_32_bits(bus->posbuf.addr));
snd_hdac_chip_writel(bus, DPLBASE, (u32)(bus->posbuf.addr + bus->addr_offset));
snd_hdac_chip_writel(bus, DPUBASE, upper_32_bits(bus->posbuf.addr + bus->addr_offset));
}
bus->chip_init = true;

10
sound/hda/core/stream.c
View File

@ -288,16 +288,16 @@ int snd_hdac_stream_setup(struct hdac_stream *azx_dev, bool code_loading)
/* program the BDL address */
/* lower BDL address */
snd_hdac_stream_writel(azx_dev, SD_BDLPL, (u32)azx_dev->bdl.addr);
snd_hdac_stream_writel(azx_dev, SD_BDLPL, (u32)(azx_dev->bdl.addr + bus->addr_offset));
/* upper BDL address */
snd_hdac_stream_writel(azx_dev, SD_BDLPU,
upper_32_bits(azx_dev->bdl.addr));
upper_32_bits(azx_dev->bdl.addr + bus->addr_offset));
/* enable the position buffer */
if (bus->use_posbuf && bus->posbuf.addr) {
if (!(snd_hdac_chip_readl(bus, DPLBASE) & AZX_DPLBASE_ENABLE))
snd_hdac_chip_writel(bus, DPLBASE,
(u32)bus->posbuf.addr | AZX_DPLBASE_ENABLE);
(u32)(bus->posbuf.addr + bus->addr_offset) | AZX_DPLBASE_ENABLE);
}
/* set the interrupt enable bits in the descriptor control register */
@ -464,8 +464,8 @@ static int setup_bdle(struct hdac_bus *bus,
addr = snd_sgbuf_get_addr(dmab, ofs);
/* program the address field of the BDL entry */
bdl[0] = cpu_to_le32((u32)addr);
bdl[1] = cpu_to_le32(upper_32_bits(addr));
bdl[0] = cpu_to_le32((u32)(addr + bus->addr_offset));
bdl[1] = cpu_to_le32(upper_32_bits(addr + bus->addr_offset));
/* program the size field of the BDL entry */
chunk = snd_sgbuf_get_chunk_size(dmab, ofs, size);
/* one BDLE cannot cross 4K boundary on CTHDA chips */