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pci_hda.c
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/*-
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2016 Alex Teaca <iateaca@FreeBSD.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 THE AUTHOR OR CONTRIBUTORS 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 <sys/param.h>
#include <time.h>
#include "pci_hda.h"
#include "bhyverun.h"
#include "config.h"
#include "pci_emul.h"
#include "hdac_reg.h"
/*
* HDA defines
*/
#define PCIR_HDCTL 0x40
#define INTEL_VENDORID 0x8086
#define HDA_INTEL_82801G 0x27d8
#define HDA_IOSS_NO 0x08
#define HDA_OSS_NO 0x04
#define HDA_ISS_NO 0x04
#define HDA_CODEC_MAX 0x0f
#define HDA_LAST_OFFSET \
(0x2084 + ((HDA_ISS_NO) * 0x20) + ((HDA_OSS_NO) * 0x20))
#define HDA_CORB_ENTRY_LEN 0x04
#define HDA_RIRB_ENTRY_LEN 0x08
#define HDA_BDL_ENTRY_LEN 0x10
#define HDA_DMA_PIB_ENTRY_LEN 0x08
#define HDA_STREAM_TAGS_CNT 0x10
#define HDA_STREAM_REGS_BASE 0x80
#define HDA_STREAM_REGS_LEN 0x20
#define HDA_DMA_ACCESS_LEN (sizeof(uint32_t))
#define HDA_BDL_MAX_LEN 0x0100
#define HDAC_SDSTS_FIFORDY (1 << 5)
#define HDA_RIRBSTS_IRQ_MASK (HDAC_RIRBSTS_RINTFL | HDAC_RIRBSTS_RIRBOIS)
#define HDA_STATESTS_IRQ_MASK ((1 << HDA_CODEC_MAX) - 1)
#define HDA_SDSTS_IRQ_MASK \
(HDAC_SDSTS_DESE | HDAC_SDSTS_FIFOE | HDAC_SDSTS_BCIS)
/*
* HDA data structures
*/
struct hda_softc;
typedef void (*hda_set_reg_handler)(struct hda_softc *sc, uint32_t offset,
uint32_t old);
struct hda_bdle {
uint32_t addrl;
uint32_t addrh;
uint32_t len;
uint32_t ioc;
} __packed;
struct hda_bdle_desc {
void *addr;
uint8_t ioc;
uint32_t len;
};
struct hda_codec_cmd_ctl {
const char *name;
void *dma_vaddr;
uint8_t run;
uint16_t rp;
uint16_t size;
uint16_t wp;
};
struct hda_stream_desc {
uint8_t dir;
uint8_t run;
uint8_t stream;
/* bp is the no. of bytes transferred in the current bdle */
uint32_t bp;
/* be is the no. of bdles transferred in the bdl */
uint32_t be;
uint32_t bdl_cnt;
struct hda_bdle_desc bdl[HDA_BDL_MAX_LEN];
};
struct hda_softc {
struct pci_devinst *pci_dev;
uint32_t regs[HDA_LAST_OFFSET];
uint8_t lintr;
uint8_t rirb_cnt;
uint64_t wall_clock_start;
struct hda_codec_cmd_ctl corb;
struct hda_codec_cmd_ctl rirb;
uint8_t codecs_no;
struct hda_codec_inst *codecs[HDA_CODEC_MAX];
/* Base Address of the DMA Position Buffer */
void *dma_pib_vaddr;
struct hda_stream_desc streams[HDA_IOSS_NO];
/* 2 tables for output and input */
uint8_t stream_map[2][HDA_STREAM_TAGS_CNT];
};
/*
* HDA module function declarations
*/
static inline void hda_set_reg_by_offset(struct hda_softc *sc, uint32_t offset,
uint32_t value);
static inline uint32_t hda_get_reg_by_offset(struct hda_softc *sc,
uint32_t offset);
static inline void hda_set_field_by_offset(struct hda_softc *sc,
uint32_t offset, uint32_t mask, uint32_t value);
static struct hda_softc *hda_init(nvlist_t *nvl);
static void hda_update_intr(struct hda_softc *sc);
static void hda_response_interrupt(struct hda_softc *sc);
static int hda_codec_constructor(struct hda_softc *sc,
struct hda_codec_class *codec, const char *play, const char *rec);
static struct hda_codec_class *hda_find_codec_class(const char *name);
static int hda_send_command(struct hda_softc *sc, uint32_t verb);
static int hda_notify_codecs(struct hda_softc *sc, uint8_t run,
uint8_t stream, uint8_t dir);
static void hda_reset(struct hda_softc *sc);
static void hda_reset_regs(struct hda_softc *sc);
static void hda_stream_reset(struct hda_softc *sc, uint8_t stream_ind);
static int hda_stream_start(struct hda_softc *sc, uint8_t stream_ind);
static int hda_stream_stop(struct hda_softc *sc, uint8_t stream_ind);
static uint32_t hda_read(struct hda_softc *sc, uint32_t offset);
static int hda_write(struct hda_softc *sc, uint32_t offset, uint8_t size,
uint32_t value);
static inline void hda_print_cmd_ctl_data(struct hda_codec_cmd_ctl *p);
static int hda_corb_start(struct hda_softc *sc);
static int hda_corb_run(struct hda_softc *sc);
static int hda_rirb_start(struct hda_softc *sc);
static void *hda_dma_get_vaddr(struct hda_softc *sc, uint64_t dma_paddr,
size_t len);
static void hda_dma_st_dword(void *dma_vaddr, uint32_t data);
static uint32_t hda_dma_ld_dword(void *dma_vaddr);
static inline uint8_t hda_get_stream_by_offsets(uint32_t offset,
uint8_t reg_offset);
static inline uint32_t hda_get_offset_stream(uint8_t stream_ind);
static void hda_set_gctl(struct hda_softc *sc, uint32_t offset, uint32_t old);
static void hda_set_statests(struct hda_softc *sc, uint32_t offset,
uint32_t old);
static void hda_set_corbwp(struct hda_softc *sc, uint32_t offset, uint32_t old);
static void hda_set_corbctl(struct hda_softc *sc, uint32_t offset,
uint32_t old);
static void hda_set_rirbctl(struct hda_softc *sc, uint32_t offset,
uint32_t old);
static void hda_set_rirbsts(struct hda_softc *sc, uint32_t offset,
uint32_t old);
static void hda_set_dpiblbase(struct hda_softc *sc, uint32_t offset,
uint32_t old);
static void hda_set_sdctl(struct hda_softc *sc, uint32_t offset, uint32_t old);
static void hda_set_sdctl2(struct hda_softc *sc, uint32_t offset, uint32_t old);
static void hda_set_sdsts(struct hda_softc *sc, uint32_t offset, uint32_t old);
static int hda_signal_state_change(struct hda_codec_inst *hci);
static int hda_response(struct hda_codec_inst *hci, uint32_t response,
uint8_t unsol);
static int hda_transfer(struct hda_codec_inst *hci, uint8_t stream,
uint8_t dir, uint8_t *buf, size_t count);
static void hda_set_pib(struct hda_softc *sc, uint8_t stream_ind, uint32_t pib);
static uint64_t hda_get_clock_ns(void);
/*
* PCI HDA function declarations
*/
static int pci_hda_init(struct pci_devinst *pi, nvlist_t *nvl);
static void pci_hda_write(struct pci_devinst *pi, int baridx, uint64_t offset,
int size, uint64_t value);
static uint64_t pci_hda_read(struct pci_devinst *pi, int baridx,
uint64_t offset, int size);
/*
* HDA global data
*/
static const hda_set_reg_handler hda_set_reg_table[] = {
[HDAC_GCTL] = hda_set_gctl,
[HDAC_STATESTS] = hda_set_statests,
[HDAC_CORBWP] = hda_set_corbwp,
[HDAC_CORBCTL] = hda_set_corbctl,
[HDAC_RIRBCTL] = hda_set_rirbctl,
[HDAC_RIRBSTS] = hda_set_rirbsts,
[HDAC_DPIBLBASE] = hda_set_dpiblbase,
#define HDAC_ISTREAM(n, iss, oss) \
[_HDAC_ISDCTL(n, iss, oss)] = hda_set_sdctl, \
[_HDAC_ISDCTL(n, iss, oss) + 2] = hda_set_sdctl2, \
[_HDAC_ISDSTS(n, iss, oss)] = hda_set_sdsts, \
#define HDAC_OSTREAM(n, iss, oss) \
[_HDAC_OSDCTL(n, iss, oss)] = hda_set_sdctl, \
[_HDAC_OSDCTL(n, iss, oss) + 2] = hda_set_sdctl2, \
[_HDAC_OSDSTS(n, iss, oss)] = hda_set_sdsts, \
HDAC_ISTREAM(0, HDA_ISS_NO, HDA_OSS_NO)
HDAC_ISTREAM(1, HDA_ISS_NO, HDA_OSS_NO)
HDAC_ISTREAM(2, HDA_ISS_NO, HDA_OSS_NO)
HDAC_ISTREAM(3, HDA_ISS_NO, HDA_OSS_NO)
HDAC_OSTREAM(0, HDA_ISS_NO, HDA_OSS_NO)
HDAC_OSTREAM(1, HDA_ISS_NO, HDA_OSS_NO)
HDAC_OSTREAM(2, HDA_ISS_NO, HDA_OSS_NO)
HDAC_OSTREAM(3, HDA_ISS_NO, HDA_OSS_NO)
};
static const uint16_t hda_corb_sizes[] = {
[HDAC_CORBSIZE_CORBSIZE_2] = 2,
[HDAC_CORBSIZE_CORBSIZE_16] = 16,
[HDAC_CORBSIZE_CORBSIZE_256] = 256,
[HDAC_CORBSIZE_CORBSIZE_MASK] = 0,
};
static const uint16_t hda_rirb_sizes[] = {
[HDAC_RIRBSIZE_RIRBSIZE_2] = 2,
[HDAC_RIRBSIZE_RIRBSIZE_16] = 16,
[HDAC_RIRBSIZE_RIRBSIZE_256] = 256,
[HDAC_RIRBSIZE_RIRBSIZE_MASK] = 0,
};
static const struct hda_ops hops = {
.signal = hda_signal_state_change,
.response = hda_response,
.transfer = hda_transfer,
};
static const struct pci_devemu pci_de_hda = {
.pe_emu = "hda",
.pe_init = pci_hda_init,
.pe_barwrite = pci_hda_write,
.pe_barread = pci_hda_read
};
PCI_EMUL_SET(pci_de_hda);
SET_DECLARE(hda_codec_class_set, struct hda_codec_class);
#if DEBUG_HDA == 1
FILE *dbg;
#endif
/*
* HDA module function definitions
*/
static inline void
hda_set_reg_by_offset(struct hda_softc *sc, uint32_t offset, uint32_t value)
{
assert(offset < HDA_LAST_OFFSET);
sc->regs[offset] = value;
}
static inline uint32_t
hda_get_reg_by_offset(struct hda_softc *sc, uint32_t offset)
{
assert(offset < HDA_LAST_OFFSET);
return sc->regs[offset];
}
static inline void
hda_set_field_by_offset(struct hda_softc *sc, uint32_t offset,
uint32_t mask, uint32_t value)
{
uint32_t reg_value = 0;
reg_value = hda_get_reg_by_offset(sc, offset);
reg_value &= ~mask;
reg_value |= (value & mask);
hda_set_reg_by_offset(sc, offset, reg_value);
}
static struct hda_softc *
hda_init(nvlist_t *nvl)
{
struct hda_softc *sc = NULL;
struct hda_codec_class *codec = NULL;
const char *value;
char *play;
char *rec;
int err;
#if DEBUG_HDA == 1
dbg = fopen(DEBUG_HDA_FILE, "w+");
#endif
sc = calloc(1, sizeof(*sc));
if (!sc)
return (NULL);
hda_reset_regs(sc);
/*
* TODO search all configured codecs
* For now we play with one single codec
*/
codec = hda_find_codec_class("hda_codec");
if (codec) {
value = get_config_value_node(nvl, "play");
if (value == NULL)
play = NULL;
else
play = strdup(value);
value = get_config_value_node(nvl, "rec");
if (value == NULL)
rec = NULL;
else
rec = strdup(value);
DPRINTF("play: %s rec: %s", play, rec);
if (play != NULL || rec != NULL) {
err = hda_codec_constructor(sc, codec, play, rec);
assert(!err);
}
free(play);
free(rec);
}
return (sc);
}
static void
hda_update_intr(struct hda_softc *sc)
{
struct pci_devinst *pi = sc->pci_dev;
uint32_t intctl = hda_get_reg_by_offset(sc, HDAC_INTCTL);
uint32_t intsts = 0;
uint32_t sdsts = 0;
uint32_t rirbsts = 0;
uint32_t wakeen = 0;
uint32_t statests = 0;
uint32_t off = 0;
int i;
/* update the CIS bits */
rirbsts = hda_get_reg_by_offset(sc, HDAC_RIRBSTS);
if (rirbsts & (HDAC_RIRBSTS_RINTFL | HDAC_RIRBSTS_RIRBOIS))
intsts |= HDAC_INTSTS_CIS;
wakeen = hda_get_reg_by_offset(sc, HDAC_WAKEEN);
statests = hda_get_reg_by_offset(sc, HDAC_STATESTS);
if (statests & wakeen)
intsts |= HDAC_INTSTS_CIS;
/* update the SIS bits */
for (i = 0; i < HDA_IOSS_NO; i++) {
off = hda_get_offset_stream(i);
sdsts = hda_get_reg_by_offset(sc, off + HDAC_SDSTS);
if (sdsts & HDAC_SDSTS_BCIS)
intsts |= (1 << i);
}
/* update the GIS bit */
if (intsts)
intsts |= HDAC_INTSTS_GIS;
hda_set_reg_by_offset(sc, HDAC_INTSTS, intsts);
if ((intctl & HDAC_INTCTL_GIE) && ((intsts & \
~HDAC_INTSTS_GIS) & intctl)) {
if (!sc->lintr) {
pci_lintr_assert(pi);
sc->lintr = 1;
}
} else {
if (sc->lintr) {
pci_lintr_deassert(pi);
sc->lintr = 0;
}
}
}
static void
hda_response_interrupt(struct hda_softc *sc)
{
uint8_t rirbctl = hda_get_reg_by_offset(sc, HDAC_RIRBCTL);
if ((rirbctl & HDAC_RIRBCTL_RINTCTL) && sc->rirb_cnt) {
sc->rirb_cnt = 0;
hda_set_field_by_offset(sc, HDAC_RIRBSTS, HDAC_RIRBSTS_RINTFL,
HDAC_RIRBSTS_RINTFL);
hda_update_intr(sc);
}
}
static int
hda_codec_constructor(struct hda_softc *sc, struct hda_codec_class *codec,
const char *play, const char *rec)
{
struct hda_codec_inst *hci = NULL;
if (sc->codecs_no >= HDA_CODEC_MAX)
return (-1);
hci = calloc(1, sizeof(struct hda_codec_inst));
if (!hci)
return (-1);
hci->hda = sc;
hci->hops = &hops;
hci->cad = sc->codecs_no;
hci->codec = codec;
sc->codecs[sc->codecs_no++] = hci;
if (!codec->init) {
DPRINTF("This codec does not implement the init function");
return (-1);
}
return (codec->init(hci, play, rec));
}
static struct hda_codec_class *
hda_find_codec_class(const char *name)
{
struct hda_codec_class **pdpp = NULL, *pdp = NULL;
SET_FOREACH(pdpp, hda_codec_class_set) {
pdp = *pdpp;
if (!strcmp(pdp->name, name)) {
return (pdp);
}
}
return (NULL);
}
static int
hda_send_command(struct hda_softc *sc, uint32_t verb)
{
struct hda_codec_inst *hci = NULL;
struct hda_codec_class *codec = NULL;
uint8_t cad = (verb >> HDA_CMD_CAD_SHIFT) & 0x0f;
if (cad >= sc->codecs_no)
return (-1);
DPRINTF("cad: 0x%x verb: 0x%x", cad, verb);
hci = sc->codecs[cad];
assert(hci);
codec = hci->codec;
assert(codec);
if (!codec->command) {
DPRINTF("This codec does not implement the command function");
return (-1);
}
return (codec->command(hci, verb));
}
static int
hda_notify_codecs(struct hda_softc *sc, uint8_t run, uint8_t stream,
uint8_t dir)
{
struct hda_codec_inst *hci = NULL;
struct hda_codec_class *codec = NULL;
int err;
int i;
/* Notify each codec */
for (i = 0; i < sc->codecs_no; i++) {
hci = sc->codecs[i];
assert(hci);
codec = hci->codec;
assert(codec);
if (codec->notify) {
err = codec->notify(hci, run, stream, dir);
if (!err)
break;
}
}
return (i == sc->codecs_no ? (-1) : 0);
}
static void
hda_reset(struct hda_softc *sc)
{
int i;
struct hda_codec_inst *hci = NULL;
struct hda_codec_class *codec = NULL;
hda_reset_regs(sc);
/* Reset each codec */
for (i = 0; i < sc->codecs_no; i++) {
hci = sc->codecs[i];
assert(hci);
codec = hci->codec;
assert(codec);
if (codec->reset)
codec->reset(hci);
}
sc->wall_clock_start = hda_get_clock_ns();
}
static void
hda_reset_regs(struct hda_softc *sc)
{
uint32_t off = 0;
uint8_t i;
DPRINTF("Reset the HDA controller registers ...");
memset(sc->regs, 0, sizeof(sc->regs));
hda_set_reg_by_offset(sc, HDAC_GCAP,
HDAC_GCAP_64OK |
(HDA_ISS_NO << HDAC_GCAP_ISS_SHIFT) |
(HDA_OSS_NO << HDAC_GCAP_OSS_SHIFT));
hda_set_reg_by_offset(sc, HDAC_VMAJ, 0x01);
hda_set_reg_by_offset(sc, HDAC_OUTPAY, 0x3c);
hda_set_reg_by_offset(sc, HDAC_INPAY, 0x1d);
hda_set_reg_by_offset(sc, HDAC_CORBSIZE,
HDAC_CORBSIZE_CORBSZCAP_256 | HDAC_CORBSIZE_CORBSIZE_256);
hda_set_reg_by_offset(sc, HDAC_RIRBSIZE,
HDAC_RIRBSIZE_RIRBSZCAP_256 | HDAC_RIRBSIZE_RIRBSIZE_256);
for (i = 0; i < HDA_IOSS_NO; i++) {
off = hda_get_offset_stream(i);
hda_set_reg_by_offset(sc, off + HDAC_SDFIFOS, HDA_FIFO_SIZE);
}
}
static void
hda_stream_reset(struct hda_softc *sc, uint8_t stream_ind)
{
struct hda_stream_desc *st = &sc->streams[stream_ind];
uint32_t off = hda_get_offset_stream(stream_ind);
DPRINTF("Reset the HDA stream: 0x%x", stream_ind);
/* Reset the Stream Descriptor registers */
memset(sc->regs + HDA_STREAM_REGS_BASE + off, 0, HDA_STREAM_REGS_LEN);
/* Reset the Stream Descriptor */
memset(st, 0, sizeof(*st));
hda_set_field_by_offset(sc, off + HDAC_SDSTS,
HDAC_SDSTS_FIFORDY, HDAC_SDSTS_FIFORDY);
hda_set_field_by_offset(sc, off + HDAC_SDCTL0,
HDAC_SDCTL_SRST, HDAC_SDCTL_SRST);
}
static int
hda_stream_start(struct hda_softc *sc, uint8_t stream_ind)
{
struct hda_stream_desc *st = &sc->streams[stream_ind];
struct hda_bdle_desc *bdle_desc = NULL;
struct hda_bdle *bdle = NULL;
uint32_t lvi = 0;
uint32_t bdl_cnt = 0;
uint64_t bdpl = 0;
uint64_t bdpu = 0;
uint64_t bdl_paddr = 0;
void *bdl_vaddr = NULL;
uint32_t bdle_sz = 0;
uint64_t bdle_addrl = 0;
uint64_t bdle_addrh = 0;
uint64_t bdle_paddr = 0;
void *bdle_vaddr = NULL;
uint32_t off = hda_get_offset_stream(stream_ind);
uint32_t sdctl = 0;
uint8_t strm = 0;
uint8_t dir = 0;
assert(!st->run);
lvi = hda_get_reg_by_offset(sc, off + HDAC_SDLVI);
bdpl = hda_get_reg_by_offset(sc, off + HDAC_SDBDPL);
bdpu = hda_get_reg_by_offset(sc, off + HDAC_SDBDPU);
bdl_cnt = lvi + 1;
assert(bdl_cnt <= HDA_BDL_MAX_LEN);
bdl_paddr = bdpl | (bdpu << 32);
bdl_vaddr = hda_dma_get_vaddr(sc, bdl_paddr,
HDA_BDL_ENTRY_LEN * bdl_cnt);
if (!bdl_vaddr) {
DPRINTF("Fail to get the guest virtual address");
return (-1);
}
DPRINTF("stream: 0x%x bdl_cnt: 0x%x bdl_paddr: 0x%lx",
stream_ind, bdl_cnt, bdl_paddr);
st->bdl_cnt = bdl_cnt;
bdle = (struct hda_bdle *)bdl_vaddr;
for (size_t i = 0; i < bdl_cnt; i++, bdle++) {
bdle_sz = bdle->len;
assert(!(bdle_sz % HDA_DMA_ACCESS_LEN));
bdle_addrl = bdle->addrl;
bdle_addrh = bdle->addrh;
bdle_paddr = bdle_addrl | (bdle_addrh << 32);
bdle_vaddr = hda_dma_get_vaddr(sc, bdle_paddr, bdle_sz);
if (!bdle_vaddr) {
DPRINTF("Fail to get the guest virtual address");
return (-1);
}
bdle_desc = &st->bdl[i];
bdle_desc->addr = bdle_vaddr;
bdle_desc->len = bdle_sz;
bdle_desc->ioc = bdle->ioc;
DPRINTF("bdle: 0x%zx bdle_sz: 0x%x", i, bdle_sz);
}
sdctl = hda_get_reg_by_offset(sc, off + HDAC_SDCTL0);
strm = (sdctl >> 20) & 0x0f;
dir = stream_ind >= HDA_ISS_NO;
DPRINTF("strm: 0x%x, dir: 0x%x", strm, dir);
sc->stream_map[dir][strm] = stream_ind;
st->stream = strm;
st->dir = dir;
st->bp = 0;
st->be = 0;
hda_set_pib(sc, stream_ind, 0);
st->run = 1;
hda_notify_codecs(sc, 1, strm, dir);
return (0);
}
static int
hda_stream_stop(struct hda_softc *sc, uint8_t stream_ind)
{
struct hda_stream_desc *st = &sc->streams[stream_ind];
uint8_t strm = st->stream;
uint8_t dir = st->dir;
DPRINTF("stream: 0x%x, strm: 0x%x, dir: 0x%x", stream_ind, strm, dir);
st->run = 0;
hda_notify_codecs(sc, 0, strm, dir);
return (0);
}
static uint32_t
hda_read(struct hda_softc *sc, uint32_t offset)
{
if (offset == HDAC_WALCLK)
return (24 * (hda_get_clock_ns() - \
sc->wall_clock_start) / 1000);
return (hda_get_reg_by_offset(sc, offset));
}
static int
hda_write(struct hda_softc *sc, uint32_t offset, uint8_t size, uint32_t value)
{
uint32_t old = hda_get_reg_by_offset(sc, offset);
uint32_t masks[] = {0x00000000, 0x000000ff, 0x0000ffff,
0x00ffffff, 0xffffffff};
hda_set_reg_handler set_reg_handler = NULL;
if (offset < nitems(hda_set_reg_table))
set_reg_handler = hda_set_reg_table[offset];
hda_set_field_by_offset(sc, offset, masks[size], value);
if (set_reg_handler)
set_reg_handler(sc, offset, old);
return (0);
}
#if DEBUG_HDA == 1
static inline void
hda_print_cmd_ctl_data(struct hda_codec_cmd_ctl *p)
{
DPRINTF("%s size: %d", p->name, p->size);
DPRINTF("%s dma_vaddr: %p", p->name, p->dma_vaddr);
DPRINTF("%s wp: 0x%x", p->name, p->wp);
DPRINTF("%s rp: 0x%x", p->name, p->rp);
}
#else
static inline void
hda_print_cmd_ctl_data(struct hda_codec_cmd_ctl *p __unused) {}
#endif
static int
hda_corb_start(struct hda_softc *sc)
{
struct hda_codec_cmd_ctl *corb = &sc->corb;
uint8_t corbsize = 0;
uint64_t corblbase = 0;
uint64_t corbubase = 0;
uint64_t corbpaddr = 0;
corb->name = "CORB";
corbsize = hda_get_reg_by_offset(sc, HDAC_CORBSIZE) & \
HDAC_CORBSIZE_CORBSIZE_MASK;
corb->size = hda_corb_sizes[corbsize];
if (!corb->size) {
DPRINTF("Invalid corb size");
return (-1);
}
corblbase = hda_get_reg_by_offset(sc, HDAC_CORBLBASE);
corbubase = hda_get_reg_by_offset(sc, HDAC_CORBUBASE);
corbpaddr = corblbase | (corbubase << 32);
DPRINTF("CORB dma_paddr: %p", (void *)corbpaddr);
corb->dma_vaddr = hda_dma_get_vaddr(sc, corbpaddr,
HDA_CORB_ENTRY_LEN * corb->size);
if (!corb->dma_vaddr) {
DPRINTF("Fail to get the guest virtual address");
return (-1);
}
corb->wp = hda_get_reg_by_offset(sc, HDAC_CORBWP);
corb->rp = hda_get_reg_by_offset(sc, HDAC_CORBRP);
corb->run = 1;
hda_print_cmd_ctl_data(corb);
return (0);
}
static int
hda_corb_run(struct hda_softc *sc)
{
struct hda_codec_cmd_ctl *corb = &sc->corb;
uint32_t verb = 0;
int err;
corb->wp = hda_get_reg_by_offset(sc, HDAC_CORBWP);
while (corb->rp != corb->wp && corb->run) {
corb->rp++;
corb->rp %= corb->size;
verb = hda_dma_ld_dword((uint8_t *)corb->dma_vaddr +
HDA_CORB_ENTRY_LEN * corb->rp);
err = hda_send_command(sc, verb);
assert(!err);
}
hda_set_reg_by_offset(sc, HDAC_CORBRP, corb->rp);
if (corb->run)
hda_response_interrupt(sc);
return (0);
}
static int
hda_rirb_start(struct hda_softc *sc)
{
struct hda_codec_cmd_ctl *rirb = &sc->rirb;
uint8_t rirbsize = 0;
uint64_t rirblbase = 0;
uint64_t rirbubase = 0;
uint64_t rirbpaddr = 0;
rirb->name = "RIRB";
rirbsize = hda_get_reg_by_offset(sc, HDAC_RIRBSIZE) & \
HDAC_RIRBSIZE_RIRBSIZE_MASK;
rirb->size = hda_rirb_sizes[rirbsize];
if (!rirb->size) {
DPRINTF("Invalid rirb size");
return (-1);
}
rirblbase = hda_get_reg_by_offset(sc, HDAC_RIRBLBASE);
rirbubase = hda_get_reg_by_offset(sc, HDAC_RIRBUBASE);
rirbpaddr = rirblbase | (rirbubase << 32);
DPRINTF("RIRB dma_paddr: %p", (void *)rirbpaddr);
rirb->dma_vaddr = hda_dma_get_vaddr(sc, rirbpaddr,
HDA_RIRB_ENTRY_LEN * rirb->size);
if (!rirb->dma_vaddr) {
DPRINTF("Fail to get the guest virtual address");
return (-1);
}
rirb->wp = hda_get_reg_by_offset(sc, HDAC_RIRBWP);
rirb->rp = 0x0000;
rirb->run = 1;
hda_print_cmd_ctl_data(rirb);
return (0);
}
static void *
hda_dma_get_vaddr(struct hda_softc *sc, uint64_t dma_paddr, size_t len)
{
struct pci_devinst *pi = sc->pci_dev;
assert(pi);
return (paddr_guest2host(pi->pi_vmctx, (uintptr_t)dma_paddr, len));
}
static void
hda_dma_st_dword(void *dma_vaddr, uint32_t data)
{
*(uint32_t*)dma_vaddr = data;
}
static uint32_t
hda_dma_ld_dword(void *dma_vaddr)
{
return (*(uint32_t*)dma_vaddr);
}
static inline uint8_t
hda_get_stream_by_offsets(uint32_t offset, uint8_t reg_offset)
{
uint8_t stream_ind = (offset - reg_offset) >> 5;
assert(stream_ind < HDA_IOSS_NO);
return (stream_ind);
}
static inline uint32_t
hda_get_offset_stream(uint8_t stream_ind)
{
return (stream_ind << 5);
}
static void
hda_set_gctl(struct hda_softc *sc, uint32_t offset, uint32_t old __unused)
{
uint32_t value = hda_get_reg_by_offset(sc, offset);
if (!(value & HDAC_GCTL_CRST)) {
hda_reset(sc);
}
}
static void
hda_set_statests(struct hda_softc *sc, uint32_t offset, uint32_t old)
{
uint32_t value = hda_get_reg_by_offset(sc, offset);
hda_set_reg_by_offset(sc, offset, old);
/* clear the corresponding bits written by the software (guest) */
hda_set_field_by_offset(sc, offset, value & HDA_STATESTS_IRQ_MASK, 0);
hda_update_intr(sc);
}
static void
hda_set_corbwp(struct hda_softc *sc, uint32_t offset __unused,
uint32_t old __unused)
{
hda_corb_run(sc);
}
static void
hda_set_corbctl(struct hda_softc *sc, uint32_t offset, uint32_t old)
{
uint32_t value = hda_get_reg_by_offset(sc, offset);
int err;
struct hda_codec_cmd_ctl *corb = NULL;
if (value & HDAC_CORBCTL_CORBRUN) {
if (!(old & HDAC_CORBCTL_CORBRUN)) {
err = hda_corb_start(sc);
assert(!err);
}
} else {
corb = &sc->corb;
memset(corb, 0, sizeof(*corb));
}
hda_corb_run(sc);
}
static void
hda_set_rirbctl(struct hda_softc *sc, uint32_t offset, uint32_t old __unused)
{
uint32_t value = hda_get_reg_by_offset(sc, offset);
int err;
struct hda_codec_cmd_ctl *rirb = NULL;
if (value & HDAC_RIRBCTL_RIRBDMAEN) {
err = hda_rirb_start(sc);
assert(!err);
} else {
rirb = &sc->rirb;
memset(rirb, 0, sizeof(*rirb));
}
}
static void
hda_set_rirbsts(struct hda_softc *sc, uint32_t offset, uint32_t old)
{
uint32_t value = hda_get_reg_by_offset(sc, offset);
hda_set_reg_by_offset(sc, offset, old);
/* clear the corresponding bits written by the software (guest) */
hda_set_field_by_offset(sc, offset, value & HDA_RIRBSTS_IRQ_MASK, 0);
hda_update_intr(sc);
}
static void
hda_set_dpiblbase(struct hda_softc *sc, uint32_t offset, uint32_t old)
{
uint32_t value = hda_get_reg_by_offset(sc, offset);
uint64_t dpiblbase = 0;
uint64_t dpibubase = 0;
uint64_t dpibpaddr = 0;
if ((value & HDAC_DPLBASE_DPLBASE_DMAPBE) != (old & \
HDAC_DPLBASE_DPLBASE_DMAPBE)) {
if (value & HDAC_DPLBASE_DPLBASE_DMAPBE) {
dpiblbase = value & HDAC_DPLBASE_DPLBASE_MASK;
dpibubase = hda_get_reg_by_offset(sc, HDAC_DPIBUBASE);
dpibpaddr = dpiblbase | (dpibubase << 32);
DPRINTF("DMA Position In Buffer dma_paddr: %p",
(void *)dpibpaddr);
sc->dma_pib_vaddr = hda_dma_get_vaddr(sc, dpibpaddr,
HDA_DMA_PIB_ENTRY_LEN * HDA_IOSS_NO);
if (!sc->dma_pib_vaddr) {
DPRINTF("Fail to get the guest \
virtual address");
assert(0);
}
} else {
DPRINTF("DMA Position In Buffer Reset");
sc->dma_pib_vaddr = NULL;
}
}