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5760b029ee
freebsd-nq/sys/dev/rtwn/if_rtwn.c
Andriy Voskoboinyk 6ab1306e04 rtwn: fix Tx processing, add some busdma synchronization. 
1) Unload mbuf instead of descriptor in rtwn_tx_done().
2) Add more synchronization for device visible mappings before
touching the memory.
3) Improve watchdog timer logic.

Reported and tested by:		mva

Approved by:	re (gjb)
2016-06-20 22:45:19 +00:00

3530 lines
95 KiB
C
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/* $OpenBSD: if_rtwn.c,v 1.6 2015/08/28 00:03:53 deraadt Exp $ */
/*-
* Copyright (c) 2010 Damien Bergamini <damien.bergamini@free.fr>
* Copyright (c) 2015 Stefan Sperling <stsp@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/*
* Driver for Realtek RTL8188CE
*/
#include <sys/param.h>
#include <sys/sysctl.h>
#include <sys/sockio.h>
#include <sys/mbuf.h>
#include <sys/kernel.h>
#include <sys/socket.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/endian.h>
#include <sys/firmware.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/rman.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <net/bpf.h>
#include <net/if.h>
#include <net/if_var.h>
#include <net/if_arp.h>
#include <net/ethernet.h>
#include <net/if_dl.h>
#include <net/if_media.h>
#include <net/if_types.h>
#include <net80211/ieee80211_var.h>
#include <net80211/ieee80211_radiotap.h>
#include <net80211/ieee80211_regdomain.h>
#include <net80211/ieee80211_ratectl.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/in_var.h>
#include <netinet/ip.h>
#include <netinet/if_ether.h>
#include <dev/rtwn/if_rtwnreg.h>
#define RTWN_DEBUG
#ifdef RTWN_DEBUG
#define DPRINTF(x) do { if (sc->sc_debug > 0) printf x; } while (0)
#define DPRINTFN(n, x) do { if (sc->sc_debug >= (n)) printf x; } while (0)
#else
#define DPRINTF(x)
#define DPRINTFN(n, x)
#endif
/*
* PCI configuration space registers.
*/
#define RTWN_PCI_IOBA 0x10 /* i/o mapped base */
#define RTWN_PCI_MMBA 0x18 /* memory mapped base */
#define RTWN_INT_ENABLE (R92C_IMR_ROK | R92C_IMR_VODOK | R92C_IMR_VIDOK | \
R92C_IMR_BEDOK | R92C_IMR_BKDOK | R92C_IMR_MGNTDOK | \
R92C_IMR_HIGHDOK | R92C_IMR_BDOK | R92C_IMR_RDU | \
R92C_IMR_RXFOVW)
struct rtwn_ident {
uint16_t vendor;
uint16_t device;
const char *name;
};
static const struct rtwn_ident rtwn_ident_table[] = {
{ 0x10ec, 0x8176, "Realtek RTL8188CE" },
{ 0, 0, NULL }
};
static void rtwn_dma_map_addr(void *, bus_dma_segment_t *, int, int);
static void rtwn_setup_rx_desc(struct rtwn_softc *, struct r92c_rx_desc *,
bus_addr_t, size_t, int);
static int rtwn_alloc_rx_list(struct rtwn_softc *);
static void rtwn_reset_rx_list(struct rtwn_softc *);
static void rtwn_free_rx_list(struct rtwn_softc *);
static int rtwn_alloc_tx_list(struct rtwn_softc *, int);
static void rtwn_reset_tx_list(struct rtwn_softc *, int);
static void rtwn_free_tx_list(struct rtwn_softc *, int);
static struct ieee80211vap *rtwn_vap_create(struct ieee80211com *,
const char [IFNAMSIZ], int, enum ieee80211_opmode, int,
const uint8_t [IEEE80211_ADDR_LEN],
const uint8_t [IEEE80211_ADDR_LEN]);
static void rtwn_vap_delete(struct ieee80211vap *);
static void rtwn_write_1(struct rtwn_softc *, uint16_t, uint8_t);
static void rtwn_write_2(struct rtwn_softc *, uint16_t, uint16_t);
static void rtwn_write_4(struct rtwn_softc *, uint16_t, uint32_t);
static uint8_t rtwn_read_1(struct rtwn_softc *, uint16_t);
static uint16_t rtwn_read_2(struct rtwn_softc *, uint16_t);
static uint32_t rtwn_read_4(struct rtwn_softc *, uint16_t);
static int rtwn_fw_cmd(struct rtwn_softc *, uint8_t, const void *, int);
static void rtwn_rf_write(struct rtwn_softc *, int, uint8_t, uint32_t);
static uint32_t rtwn_rf_read(struct rtwn_softc *, int, uint8_t);
static int rtwn_llt_write(struct rtwn_softc *, uint32_t, uint32_t);
static uint8_t rtwn_efuse_read_1(struct rtwn_softc *, uint16_t);
static void rtwn_efuse_read(struct rtwn_softc *);
static int rtwn_read_chipid(struct rtwn_softc *);
static void rtwn_read_rom(struct rtwn_softc *);
static int rtwn_ra_init(struct rtwn_softc *);
static void rtwn_tsf_sync_enable(struct rtwn_softc *);
static void rtwn_set_led(struct rtwn_softc *, int, int);
static void rtwn_calib_to(void *);
static int rtwn_newstate(struct ieee80211vap *, enum ieee80211_state, int);
static int rtwn_updateedca(struct ieee80211com *);
static void rtwn_update_avgrssi(struct rtwn_softc *, int, int8_t);
static int8_t rtwn_get_rssi(struct rtwn_softc *, int, void *);
static void rtwn_rx_frame(struct rtwn_softc *, struct r92c_rx_desc *,
struct rtwn_rx_data *, int);
static int rtwn_tx(struct rtwn_softc *, struct mbuf *,
struct ieee80211_node *);
static void rtwn_tx_done(struct rtwn_softc *, int);
static int rtwn_raw_xmit(struct ieee80211_node *, struct mbuf *,
const struct ieee80211_bpf_params *);
static int rtwn_transmit(struct ieee80211com *, struct mbuf *);
static void rtwn_parent(struct ieee80211com *);
static void rtwn_start(struct rtwn_softc *sc);
static void rtwn_watchdog(void *);
static int rtwn_power_on(struct rtwn_softc *);
static int rtwn_llt_init(struct rtwn_softc *);
static void rtwn_fw_reset(struct rtwn_softc *);
static void rtwn_fw_loadpage(struct rtwn_softc *, int, const uint8_t *,
int);
static int rtwn_load_firmware(struct rtwn_softc *);
static int rtwn_dma_init(struct rtwn_softc *);
static void rtwn_mac_init(struct rtwn_softc *);
static void rtwn_bb_init(struct rtwn_softc *);
static void rtwn_rf_init(struct rtwn_softc *);
static void rtwn_cam_init(struct rtwn_softc *);
static void rtwn_pa_bias_init(struct rtwn_softc *);
static void rtwn_rxfilter_init(struct rtwn_softc *);
static void rtwn_edca_init(struct rtwn_softc *);
static void rtwn_write_txpower(struct rtwn_softc *, int, uint16_t[]);
static void rtwn_get_txpower(struct rtwn_softc *, int,
struct ieee80211_channel *, struct ieee80211_channel *,
uint16_t[]);
static void rtwn_set_txpower(struct rtwn_softc *,
struct ieee80211_channel *, struct ieee80211_channel *);
static void rtwn_set_rx_bssid_all(struct rtwn_softc *, int);
static void rtwn_set_gain(struct rtwn_softc *, uint8_t);
static void rtwn_scan_start(struct ieee80211com *);
static void rtwn_scan_end(struct ieee80211com *);
static void rtwn_getradiocaps(struct ieee80211com *, int, int *,
struct ieee80211_channel[]);
static void rtwn_set_channel(struct ieee80211com *);
static void rtwn_update_mcast(struct ieee80211com *);
static void rtwn_set_chan(struct rtwn_softc *,
struct ieee80211_channel *, struct ieee80211_channel *);
static int rtwn_iq_calib_chain(struct rtwn_softc *, int, uint16_t[2],
uint16_t[2]);
static void rtwn_iq_calib_run(struct rtwn_softc *, int, uint16_t[2][2],
uint16_t[2][2]);
static int rtwn_iq_calib_compare_results(uint16_t[2][2], uint16_t[2][2],
uint16_t[2][2], uint16_t[2][2], int);
static void rtwn_iq_calib_write_results(struct rtwn_softc *, uint16_t[2],
uint16_t[2], int);
static void rtwn_iq_calib(struct rtwn_softc *);
static void rtwn_lc_calib(struct rtwn_softc *);
static void rtwn_temp_calib(struct rtwn_softc *);
static int rtwn_init(struct rtwn_softc *);
static void rtwn_stop_locked(struct rtwn_softc *);
static void rtwn_stop(struct rtwn_softc *);
static void rtwn_intr(void *);
/* Aliases. */
#define rtwn_bb_write rtwn_write_4
#define rtwn_bb_read rtwn_read_4
static int rtwn_probe(device_t);
static int rtwn_attach(device_t);
static int rtwn_detach(device_t);
static int rtwn_shutdown(device_t);
static int rtwn_suspend(device_t);
static int rtwn_resume(device_t);
static device_method_t rtwn_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, rtwn_probe),
DEVMETHOD(device_attach, rtwn_attach),
DEVMETHOD(device_detach, rtwn_detach),
DEVMETHOD(device_shutdown, rtwn_shutdown),
DEVMETHOD(device_suspend, rtwn_suspend),
DEVMETHOD(device_resume, rtwn_resume),
DEVMETHOD_END
};
static driver_t rtwn_driver = {
"rtwn",
rtwn_methods,
sizeof (struct rtwn_softc)
};
static devclass_t rtwn_devclass;
DRIVER_MODULE(rtwn, pci, rtwn_driver, rtwn_devclass, NULL, NULL);
MODULE_VERSION(rtwn, 1);
MODULE_DEPEND(rtwn, pci, 1, 1, 1);
MODULE_DEPEND(rtwn, wlan, 1, 1, 1);
MODULE_DEPEND(rtwn, firmware, 1, 1, 1);
static const uint8_t rtwn_chan_2ghz[] =
{ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 };
static int
rtwn_probe(device_t dev)
{
const struct rtwn_ident *ident;
for (ident = rtwn_ident_table; ident->name != NULL; ident++) {
if (pci_get_vendor(dev) == ident->vendor &&
pci_get_device(dev) == ident->device) {
device_set_desc(dev, ident->name);
return (BUS_PROBE_DEFAULT);
}
}
return (ENXIO);
}
static int
rtwn_attach(device_t dev)
{
struct rtwn_softc *sc = device_get_softc(dev);
struct ieee80211com *ic = &sc->sc_ic;
uint32_t lcsr;
int i, count, error, rid;
sc->sc_dev = dev;
sc->sc_debug = 0;
/*
* Get the offset of the PCI Express Capability Structure in PCI
* Configuration Space.
*/
error = pci_find_cap(dev, PCIY_EXPRESS, &sc->sc_cap_off);
if (error != 0) {
device_printf(dev, "PCIe capability structure not found!\n");
return (error);
}
/* Enable bus-mastering. */
pci_enable_busmaster(dev);
rid = PCIR_BAR(2);
sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
RF_ACTIVE);
if (sc->mem == NULL) {
device_printf(dev, "can't map mem space\n");
return (ENOMEM);
}
sc->sc_st = rman_get_bustag(sc->mem);
sc->sc_sh = rman_get_bushandle(sc->mem);
/* Install interrupt handler. */
count = 1;
rid = 0;
if (pci_alloc_msi(dev, &count) == 0)
rid = 1;
sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE |
(rid != 0 ? 0 : RF_SHAREABLE));
if (sc->irq == NULL) {
device_printf(dev, "can't map interrupt\n");
return (ENXIO);
}
RTWN_LOCK_INIT(sc);
callout_init_mtx(&sc->calib_to, &sc->sc_mtx, 0);
callout_init_mtx(&sc->watchdog_to, &sc->sc_mtx, 0);
mbufq_init(&sc->sc_snd, ifqmaxlen);
error = rtwn_read_chipid(sc);
if (error != 0) {
device_printf(dev, "unsupported test chip\n");
goto fail;
}
/* Disable PCIe Active State Power Management (ASPM). */
lcsr = pci_read_config(sc->sc_dev, sc->sc_cap_off + PCIER_LINK_CTL, 4);
lcsr &= ~PCIEM_LINK_CTL_ASPMC;
pci_write_config(sc->sc_dev, sc->sc_cap_off + PCIER_LINK_CTL, lcsr, 4);
/* Allocate Tx/Rx buffers. */
error = rtwn_alloc_rx_list(sc);
if (error != 0) {
device_printf(dev, "could not allocate Rx buffers\n");
goto fail;
}
for (i = 0; i < RTWN_NTXQUEUES; i++) {
error = rtwn_alloc_tx_list(sc, i);
if (error != 0) {
device_printf(dev, "could not allocate Tx buffers\n");
goto fail;
}
}
/* Determine number of Tx/Rx chains. */
if (sc->chip & RTWN_CHIP_92C) {
sc->ntxchains = (sc->chip & RTWN_CHIP_92C_1T2R) ? 1 : 2;
sc->nrxchains = 2;
} else {
sc->ntxchains = 1;
sc->nrxchains = 1;
}
rtwn_read_rom(sc);
device_printf(sc->sc_dev, "MAC/BB RTL%s, RF 6052 %dT%dR\n",
(sc->chip & RTWN_CHIP_92C) ? "8192CE" : "8188CE",
sc->ntxchains, sc->nrxchains);
ic->ic_softc = sc;
ic->ic_name = device_get_nameunit(dev);
ic->ic_opmode = IEEE80211_M_STA;
ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */
/* set device capabilities */
ic->ic_caps =
IEEE80211_C_STA /* station mode */
| IEEE80211_C_MONITOR /* monitor mode */
| IEEE80211_C_SHPREAMBLE /* short preamble supported */
| IEEE80211_C_SHSLOT /* short slot time supported */
| IEEE80211_C_WPA /* capable of WPA1+WPA2 */
| IEEE80211_C_BGSCAN /* capable of bg scanning */
| IEEE80211_C_WME /* 802.11e */
;
/* XXX TODO: setup regdomain if R92C_CHANNEL_PLAN_BY_HW bit is set. */
rtwn_getradiocaps(ic, IEEE80211_CHAN_MAX, &ic->ic_nchans,
ic->ic_channels);
ieee80211_ifattach(ic);
ic->ic_wme.wme_update = rtwn_updateedca;
ic->ic_update_mcast = rtwn_update_mcast;
ic->ic_scan_start = rtwn_scan_start;
ic->ic_scan_end = rtwn_scan_end;
ic->ic_getradiocaps = rtwn_getradiocaps;
ic->ic_set_channel = rtwn_set_channel;
ic->ic_raw_xmit = rtwn_raw_xmit;
ic->ic_transmit = rtwn_transmit;
ic->ic_parent = rtwn_parent;
ic->ic_vap_create = rtwn_vap_create;
ic->ic_vap_delete = rtwn_vap_delete;
ieee80211_radiotap_attach(ic,
&sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap),
RTWN_TX_RADIOTAP_PRESENT,
&sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap),
RTWN_RX_RADIOTAP_PRESENT);
/*
* Hook our interrupt after all initialization is complete.
*/
error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE,
NULL, rtwn_intr, sc, &sc->sc_ih);
if (error != 0) {
device_printf(dev, "can't establish interrupt, error %d\n",
error);
goto fail;
}
if (bootverbose)
ieee80211_announce(ic);
return (0);
fail:
rtwn_detach(dev);
return (error);
}
static int
rtwn_detach(device_t dev)
{
struct rtwn_softc *sc = device_get_softc(dev);
int i;
if (sc->sc_ic.ic_softc != NULL) {
rtwn_stop(sc);
callout_drain(&sc->calib_to);
callout_drain(&sc->watchdog_to);
ieee80211_ifdetach(&sc->sc_ic);
mbufq_drain(&sc->sc_snd);
}
/* Uninstall interrupt handler. */
if (sc->irq != NULL) {
bus_teardown_intr(dev, sc->irq, sc->sc_ih);
bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq),
sc->irq);
pci_release_msi(dev);
}
/* Free Tx/Rx buffers. */
for (i = 0; i < RTWN_NTXQUEUES; i++)
rtwn_free_tx_list(sc, i);
rtwn_free_rx_list(sc);
if (sc->mem != NULL)
bus_release_resource(dev, SYS_RES_MEMORY,
rman_get_rid(sc->mem), sc->mem);
RTWN_LOCK_DESTROY(sc);
return (0);
}
static int
rtwn_shutdown(device_t dev)
{
return (0);
}
static int
rtwn_suspend(device_t dev)
{
return (0);
}
static int
rtwn_resume(device_t dev)
{
return (0);
}
static void
rtwn_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
{
if (error != 0)
return;
KASSERT(nsegs == 1, ("too many DMA segments, %d should be 1", nsegs));
*(bus_addr_t *)arg = segs[0].ds_addr;
}
static void
rtwn_setup_rx_desc(struct rtwn_softc *sc, struct r92c_rx_desc *desc,
bus_addr_t addr, size_t len, int idx)
{
memset(desc, 0, sizeof(*desc));
desc->rxdw0 = htole32(SM(R92C_RXDW0_PKTLEN, len) |
((idx == RTWN_RX_LIST_COUNT - 1) ? R92C_RXDW0_EOR : 0));
desc->rxbufaddr = htole32(addr);
bus_space_barrier(sc->sc_st, sc->sc_sh, 0, sc->sc_mapsize,
BUS_SPACE_BARRIER_WRITE);
desc->rxdw0 |= htole32(R92C_RXDW0_OWN);
}
static int
rtwn_alloc_rx_list(struct rtwn_softc *sc)
{
struct rtwn_rx_ring *rx_ring = &sc->rx_ring;
struct rtwn_rx_data *rx_data;
bus_size_t size;
int i, error;
/* Allocate Rx descriptors. */
size = sizeof(struct r92c_rx_desc) * RTWN_RX_LIST_COUNT;
error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
size, 1, size, 0, NULL, NULL, &rx_ring->desc_dmat);
if (error != 0) {
device_printf(sc->sc_dev, "could not create rx desc DMA tag\n");
goto fail;
}
error = bus_dmamem_alloc(rx_ring->desc_dmat, (void **)&rx_ring->desc,
BUS_DMA_NOWAIT | BUS_DMA_ZERO | BUS_DMA_COHERENT,
&rx_ring->desc_map);
if (error != 0) {
device_printf(sc->sc_dev, "could not allocate rx desc\n");
goto fail;
}
error = bus_dmamap_load(rx_ring->desc_dmat, rx_ring->desc_map,
rx_ring->desc, size, rtwn_dma_map_addr, &rx_ring->paddr, 0);
if (error != 0) {
device_printf(sc->sc_dev, "could not load rx desc DMA map\n");
goto fail;
}
bus_dmamap_sync(rx_ring->desc_dmat, rx_ring->desc_map,
BUS_DMASYNC_PREWRITE);
/* Create RX buffer DMA tag. */
error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES,
1, MCLBYTES, 0, NULL, NULL, &rx_ring->data_dmat);
if (error != 0) {
device_printf(sc->sc_dev, "could not create rx buf DMA tag\n");
goto fail;
}
/* Allocate Rx buffers. */
for (i = 0; i < RTWN_RX_LIST_COUNT; i++) {
rx_data = &rx_ring->rx_data[i];
error = bus_dmamap_create(rx_ring->data_dmat, 0, &rx_data->map);
if (error != 0) {
device_printf(sc->sc_dev,
"could not create rx buf DMA map\n");
goto fail;
}
rx_data->m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
if (rx_data->m == NULL) {
device_printf(sc->sc_dev,
"could not allocate rx mbuf\n");
error = ENOMEM;
goto fail;
}
error = bus_dmamap_load(rx_ring->data_dmat, rx_data->map,
mtod(rx_data->m, void *), MCLBYTES, rtwn_dma_map_addr,
&rx_data->paddr, BUS_DMA_NOWAIT);
if (error != 0) {
device_printf(sc->sc_dev,
"could not load rx buf DMA map");
goto fail;
}
rtwn_setup_rx_desc(sc, &rx_ring->desc[i], rx_data->paddr,
MCLBYTES, i);
}
return (0);
fail:
rtwn_free_rx_list(sc);
return (error);
}
static void
rtwn_reset_rx_list(struct rtwn_softc *sc)
{
struct rtwn_rx_ring *rx_ring = &sc->rx_ring;
struct rtwn_rx_data *rx_data;
int i;
for (i = 0; i < RTWN_RX_LIST_COUNT; i++) {
rx_data = &rx_ring->rx_data[i];
rtwn_setup_rx_desc(sc, &rx_ring->desc[i], rx_data->paddr,
MCLBYTES, i);
}
}
static void
rtwn_free_rx_list(struct rtwn_softc *sc)
{
struct rtwn_rx_ring *rx_ring = &sc->rx_ring;
struct rtwn_rx_data *rx_data;
int i;
if (rx_ring->desc_dmat != NULL) {
if (rx_ring->desc != NULL) {
bus_dmamap_sync(rx_ring->desc_dmat,
rx_ring->desc_map,
BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(rx_ring->desc_dmat,
rx_ring->desc_map);
bus_dmamem_free(rx_ring->desc_dmat, rx_ring->desc,
rx_ring->desc_map);
rx_ring->desc = NULL;
}
bus_dma_tag_destroy(rx_ring->desc_dmat);
rx_ring->desc_dmat = NULL;
}
for (i = 0; i < RTWN_RX_LIST_COUNT; i++) {
rx_data = &rx_ring->rx_data[i];
if (rx_data->m != NULL) {
bus_dmamap_sync(rx_ring->data_dmat,
rx_data->map, BUS_DMASYNC_POSTREAD);
bus_dmamap_unload(rx_ring->data_dmat, rx_data->map);
m_freem(rx_data->m);
rx_data->m = NULL;
}
bus_dmamap_destroy(rx_ring->data_dmat, rx_data->map);
rx_data->map = NULL;
}
if (rx_ring->data_dmat != NULL) {
bus_dma_tag_destroy(rx_ring->data_dmat);
rx_ring->data_dmat = NULL;
}
}
static int
rtwn_alloc_tx_list(struct rtwn_softc *sc, int qid)
{
struct rtwn_tx_ring *tx_ring = &sc->tx_ring[qid];
struct rtwn_tx_data *tx_data;
bus_size_t size;
int i, error;
size = sizeof(struct r92c_tx_desc) * RTWN_TX_LIST_COUNT;
error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), PAGE_SIZE, 0,
BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
size, 1, size, 0, NULL, NULL, &tx_ring->desc_dmat);
if (error != 0) {
device_printf(sc->sc_dev, "could not create tx ring DMA tag\n");
goto fail;
}
error = bus_dmamem_alloc(tx_ring->desc_dmat, (void **)&tx_ring->desc,
BUS_DMA_NOWAIT | BUS_DMA_ZERO, &tx_ring->desc_map);
if (error != 0) {
device_printf(sc->sc_dev, "can't map tx ring DMA memory\n");
goto fail;
}
error = bus_dmamap_load(tx_ring->desc_dmat, tx_ring->desc_map,
tx_ring->desc, size, rtwn_dma_map_addr, &tx_ring->paddr,
BUS_DMA_NOWAIT);
if (error != 0) {
device_printf(sc->sc_dev, "could not load desc DMA map\n");
goto fail;
}
bus_dmamap_sync(tx_ring->desc_dmat, tx_ring->desc_map,
BUS_DMASYNC_PREWRITE);
error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES,
1, MCLBYTES, 0, NULL, NULL, &tx_ring->data_dmat);
if (error != 0) {
device_printf(sc->sc_dev, "could not create tx buf DMA tag\n");
goto fail;
}
for (i = 0; i < RTWN_TX_LIST_COUNT; i++) {
struct r92c_tx_desc *desc = &tx_ring->desc[i];
/* setup tx desc */
desc->nextdescaddr = htole32(tx_ring->paddr +
+ sizeof(struct r92c_tx_desc)
* ((i + 1) % RTWN_TX_LIST_COUNT));
tx_data = &tx_ring->tx_data[i];
error = bus_dmamap_create(tx_ring->data_dmat, 0, &tx_data->map);
if (error != 0) {
device_printf(sc->sc_dev,
"could not create tx buf DMA map\n");
goto fail;
}
tx_data->m = NULL;
tx_data->ni = NULL;
}
return (0);
fail:
rtwn_free_tx_list(sc, qid);
return (error);
}
static void
rtwn_reset_tx_list(struct rtwn_softc *sc, int qid)
{
struct rtwn_tx_ring *tx_ring = &sc->tx_ring[qid];
int i;
for (i = 0; i < RTWN_TX_LIST_COUNT; i++) {
struct r92c_tx_desc *desc = &tx_ring->desc[i];
struct rtwn_tx_data *tx_data = &tx_ring->tx_data[i];
memset(desc, 0, sizeof(*desc) -
(sizeof(desc->reserved) + sizeof(desc->nextdescaddr64) +
sizeof(desc->nextdescaddr)));
if (tx_data->m != NULL) {
bus_dmamap_sync(tx_ring->data_dmat, tx_data->map,
BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(tx_ring->data_dmat, tx_data->map);
m_freem(tx_data->m);
tx_data->m = NULL;
}
if (tx_data->ni != NULL) {
ieee80211_free_node(tx_data->ni);
tx_data->ni = NULL;
}
}
bus_dmamap_sync(tx_ring->desc_dmat, tx_ring->desc_map,
BUS_DMASYNC_POSTWRITE);
sc->qfullmsk &= ~(1 << qid);
tx_ring->queued = 0;
tx_ring->cur = 0;
}
static void
rtwn_free_tx_list(struct rtwn_softc *sc, int qid)
{
struct rtwn_tx_ring *tx_ring = &sc->tx_ring[qid];
struct rtwn_tx_data *tx_data;
int i;
if (tx_ring->desc_dmat != NULL) {
if (tx_ring->desc != NULL) {
bus_dmamap_sync(tx_ring->desc_dmat,
tx_ring->desc_map, BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(tx_ring->desc_dmat,
tx_ring->desc_map);
bus_dmamem_free(tx_ring->desc_dmat, tx_ring->desc,
tx_ring->desc_map);
}
bus_dma_tag_destroy(tx_ring->desc_dmat);
}
for (i = 0; i < RTWN_TX_LIST_COUNT; i++) {
tx_data = &tx_ring->tx_data[i];
if (tx_data->m != NULL) {
bus_dmamap_sync(tx_ring->data_dmat, tx_data->map,
BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(tx_ring->data_dmat, tx_data->map);
m_freem(tx_data->m);
tx_data->m = NULL;
}
}
if (tx_ring->data_dmat != NULL) {
bus_dma_tag_destroy(tx_ring->data_dmat);
tx_ring->data_dmat = NULL;
}
sc->qfullmsk &= ~(1 << qid);
tx_ring->queued = 0;
tx_ring->cur = 0;
}
static struct ieee80211vap *
rtwn_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit,
enum ieee80211_opmode opmode, int flags,
const uint8_t bssid[IEEE80211_ADDR_LEN],
const uint8_t mac[IEEE80211_ADDR_LEN])
{
struct rtwn_vap *rvp;
struct ieee80211vap *vap;
if (!TAILQ_EMPTY(&ic->ic_vaps))
return (NULL);
rvp = malloc(sizeof(struct rtwn_vap), M_80211_VAP, M_WAITOK | M_ZERO);
vap = &rvp->vap;
if (ieee80211_vap_setup(ic, vap, name, unit, opmode,
flags | IEEE80211_CLONE_NOBEACONS, bssid) != 0) {
/* out of memory */
free(rvp, M_80211_VAP);
return (NULL);
}
/* Override state transition machine. */
rvp->newstate = vap->iv_newstate;
vap->iv_newstate = rtwn_newstate;
/* Complete setup. */
ieee80211_vap_attach(vap, ieee80211_media_change,
ieee80211_media_status, mac);
ic->ic_opmode = opmode;
return (vap);
}
static void
rtwn_vap_delete(struct ieee80211vap *vap)
{
struct rtwn_vap *rvp = RTWN_VAP(vap);
ieee80211_vap_detach(vap);
free(rvp, M_80211_VAP);
}
static void
rtwn_write_1(struct rtwn_softc *sc, uint16_t addr, uint8_t val)
{
bus_space_write_1(sc->sc_st, sc->sc_sh, addr, val);
}
static void
rtwn_write_2(struct rtwn_softc *sc, uint16_t addr, uint16_t val)
{
val = htole16(val);
bus_space_write_2(sc->sc_st, sc->sc_sh, addr, val);
}
static void
rtwn_write_4(struct rtwn_softc *sc, uint16_t addr, uint32_t val)
{
val = htole32(val);
bus_space_write_4(sc->sc_st, sc->sc_sh, addr, val);
}
static uint8_t
rtwn_read_1(struct rtwn_softc *sc, uint16_t addr)
{
return (bus_space_read_1(sc->sc_st, sc->sc_sh, addr));
}
static uint16_t
rtwn_read_2(struct rtwn_softc *sc, uint16_t addr)
{
return (bus_space_read_2(sc->sc_st, sc->sc_sh, addr));
}
static uint32_t
rtwn_read_4(struct rtwn_softc *sc, uint16_t addr)
{
return (bus_space_read_4(sc->sc_st, sc->sc_sh, addr));
}
static int
rtwn_fw_cmd(struct rtwn_softc *sc, uint8_t id, const void *buf, int len)
{
struct r92c_fw_cmd cmd;
int ntries;
/* Wait for current FW box to be empty. */
for (ntries = 0; ntries < 100; ntries++) {
if (!(rtwn_read_1(sc, R92C_HMETFR) & (1 << sc->fwcur)))
break;
DELAY(1);
}
if (ntries == 100) {
device_printf(sc->sc_dev,
"could not send firmware command %d\n", id);
return (ETIMEDOUT);
}
memset(&cmd, 0, sizeof(cmd));
cmd.id = id;
if (len > 3)
cmd.id |= R92C_CMD_FLAG_EXT;
KASSERT(len <= sizeof(cmd.msg), ("rtwn_fw_cmd\n"));
memcpy(cmd.msg, buf, len);
/* Write the first word last since that will trigger the FW. */
rtwn_write_2(sc, R92C_HMEBOX_EXT(sc->fwcur), *((uint8_t *)&cmd + 4));
rtwn_write_4(sc, R92C_HMEBOX(sc->fwcur), *((uint8_t *)&cmd + 0));
sc->fwcur = (sc->fwcur + 1) % R92C_H2C_NBOX;
/* Give firmware some time for processing. */
DELAY(2000);
return (0);
}
static void
rtwn_rf_write(struct rtwn_softc *sc, int chain, uint8_t addr, uint32_t val)
{
rtwn_bb_write(sc, R92C_LSSI_PARAM(chain),
SM(R92C_LSSI_PARAM_ADDR, addr) |
SM(R92C_LSSI_PARAM_DATA, val));
}
static uint32_t
rtwn_rf_read(struct rtwn_softc *sc, int chain, uint8_t addr)
{
uint32_t reg[R92C_MAX_CHAINS], val;
reg[0] = rtwn_bb_read(sc, R92C_HSSI_PARAM2(0));
if (chain != 0)
reg[chain] = rtwn_bb_read(sc, R92C_HSSI_PARAM2(chain));
rtwn_bb_write(sc, R92C_HSSI_PARAM2(0),
reg[0] & ~R92C_HSSI_PARAM2_READ_EDGE);
DELAY(1000);
rtwn_bb_write(sc, R92C_HSSI_PARAM2(chain),
RW(reg[chain], R92C_HSSI_PARAM2_READ_ADDR, addr) |
R92C_HSSI_PARAM2_READ_EDGE);
DELAY(1000);
rtwn_bb_write(sc, R92C_HSSI_PARAM2(0),
reg[0] | R92C_HSSI_PARAM2_READ_EDGE);
DELAY(1000);
if (rtwn_bb_read(sc, R92C_HSSI_PARAM1(chain)) & R92C_HSSI_PARAM1_PI)
val = rtwn_bb_read(sc, R92C_HSPI_READBACK(chain));
else
val = rtwn_bb_read(sc, R92C_LSSI_READBACK(chain));
return (MS(val, R92C_LSSI_READBACK_DATA));
}
static int
rtwn_llt_write(struct rtwn_softc *sc, uint32_t addr, uint32_t data)
{
int ntries;
rtwn_write_4(sc, R92C_LLT_INIT,
SM(R92C_LLT_INIT_OP, R92C_LLT_INIT_OP_WRITE) |
SM(R92C_LLT_INIT_ADDR, addr) |
SM(R92C_LLT_INIT_DATA, data));
/* Wait for write operation to complete. */
for (ntries = 0; ntries < 20; ntries++) {
if (MS(rtwn_read_4(sc, R92C_LLT_INIT), R92C_LLT_INIT_OP) ==
R92C_LLT_INIT_OP_NO_ACTIVE)
return (0);
DELAY(5);
}
return (ETIMEDOUT);
}
static uint8_t
rtwn_efuse_read_1(struct rtwn_softc *sc, uint16_t addr)
{
uint32_t reg;
int ntries;
reg = rtwn_read_4(sc, R92C_EFUSE_CTRL);
reg = RW(reg, R92C_EFUSE_CTRL_ADDR, addr);
reg &= ~R92C_EFUSE_CTRL_VALID;
rtwn_write_4(sc, R92C_EFUSE_CTRL, reg);
/* Wait for read operation to complete. */
for (ntries = 0; ntries < 100; ntries++) {
reg = rtwn_read_4(sc, R92C_EFUSE_CTRL);
if (reg & R92C_EFUSE_CTRL_VALID)
return (MS(reg, R92C_EFUSE_CTRL_DATA));
DELAY(5);
}
device_printf(sc->sc_dev,
"could not read efuse byte at address 0x%x\n", addr);
return (0xff);
}
static void
rtwn_efuse_read(struct rtwn_softc *sc)
{
uint8_t *rom = (uint8_t *)&sc->rom;
uint16_t addr = 0;
uint32_t reg;
uint8_t off, msk;
int i;
reg = rtwn_read_2(sc, R92C_SYS_ISO_CTRL);
if (!(reg & R92C_SYS_ISO_CTRL_PWC_EV12V)) {
rtwn_write_2(sc, R92C_SYS_ISO_CTRL,
reg | R92C_SYS_ISO_CTRL_PWC_EV12V);
}
reg = rtwn_read_2(sc, R92C_SYS_FUNC_EN);
if (!(reg & R92C_SYS_FUNC_EN_ELDR)) {
rtwn_write_2(sc, R92C_SYS_FUNC_EN,
reg | R92C_SYS_FUNC_EN_ELDR);
}
reg = rtwn_read_2(sc, R92C_SYS_CLKR);
if ((reg & (R92C_SYS_CLKR_LOADER_EN | R92C_SYS_CLKR_ANA8M)) !=
(R92C_SYS_CLKR_LOADER_EN | R92C_SYS_CLKR_ANA8M)) {
rtwn_write_2(sc, R92C_SYS_CLKR,
reg | R92C_SYS_CLKR_LOADER_EN | R92C_SYS_CLKR_ANA8M);
}
memset(&sc->rom, 0xff, sizeof(sc->rom));
while (addr < 512) {
reg = rtwn_efuse_read_1(sc, addr);
if (reg == 0xff)
break;
addr++;
off = reg >> 4;
msk = reg & 0xf;
for (i = 0; i < 4; i++) {
if (msk & (1 << i))
continue;
rom[off * 8 + i * 2 + 0] =
rtwn_efuse_read_1(sc, addr);
addr++;
rom[off * 8 + i * 2 + 1] =
rtwn_efuse_read_1(sc, addr);
addr++;
}
}
#ifdef RTWN_DEBUG
if (sc->sc_debug >= 2) {
/* Dump ROM content. */
printf("\n");
for (i = 0; i < sizeof(sc->rom); i++)
printf("%02x:", rom[i]);
printf("\n");
}
#endif
}
static int
rtwn_read_chipid(struct rtwn_softc *sc)
{
uint32_t reg;
reg = rtwn_read_4(sc, R92C_SYS_CFG);
if (reg & R92C_SYS_CFG_TRP_VAUX_EN)
/* Unsupported test chip. */
return (EIO);
if (reg & R92C_SYS_CFG_TYPE_92C) {
sc->chip |= RTWN_CHIP_92C;
/* Check if it is a castrated 8192C. */
if (MS(rtwn_read_4(sc, R92C_HPON_FSM),
R92C_HPON_FSM_CHIP_BONDING_ID) ==
R92C_HPON_FSM_CHIP_BONDING_ID_92C_1T2R)
sc->chip |= RTWN_CHIP_92C_1T2R;
}
if (reg & R92C_SYS_CFG_VENDOR_UMC) {
sc->chip |= RTWN_CHIP_UMC;
if (MS(reg, R92C_SYS_CFG_CHIP_VER_RTL) == 0)
sc->chip |= RTWN_CHIP_UMC_A_CUT;
}
return (0);
}
static void
rtwn_read_rom(struct rtwn_softc *sc)
{
struct r92c_rom *rom = &sc->rom;
/* Read full ROM image. */
rtwn_efuse_read(sc);
if (rom->id != 0x8129)
device_printf(sc->sc_dev, "invalid EEPROM ID 0x%x\n", rom->id);
/* XXX Weird but this is what the vendor driver does. */
sc->pa_setting = rtwn_efuse_read_1(sc, 0x1fa);
DPRINTF(("PA setting=0x%x\n", sc->pa_setting));
sc->board_type = MS(rom->rf_opt1, R92C_ROM_RF1_BOARD_TYPE);
sc->regulatory = MS(rom->rf_opt1, R92C_ROM_RF1_REGULATORY);
DPRINTF(("regulatory type=%d\n", sc->regulatory));
IEEE80211_ADDR_COPY(sc->sc_ic.ic_macaddr, rom->macaddr);
}
static __inline uint8_t
rate2ridx(uint8_t rate)
{
switch (rate) {
case 12: return 4;
case 18: return 5;
case 24: return 6;
case 36: return 7;
case 48: return 8;
case 72: return 9;
case 96: return 10;
case 108: return 11;
case 2: return 0;
case 4: return 1;
case 11: return 2;
case 22: return 3;
default: return RTWN_RIDX_UNKNOWN;
}
}
/*
* Initialize rate adaptation in firmware.
*/
static int
rtwn_ra_init(struct rtwn_softc *sc)
{
struct ieee80211com *ic = &sc->sc_ic;
struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
struct ieee80211_node *ni = ieee80211_ref_node(vap->iv_bss);
struct ieee80211_rateset *rs = &ni->ni_rates;
struct r92c_fw_cmd_macid_cfg cmd;
uint32_t rates, basicrates;
uint8_t maxrate, maxbasicrate, mode, ridx;
int error, i;
/* Get normal and basic rates mask. */
rates = basicrates = 0;
maxrate = maxbasicrate = 0;
for (i = 0; i < rs->rs_nrates; i++) {
/* Convert 802.11 rate to HW rate index. */
ridx = rate2ridx(IEEE80211_RV(rs->rs_rates[i]));
if (ridx == RTWN_RIDX_UNKNOWN) /* Unknown rate, skip. */
continue;
rates |= 1 << ridx;
if (ridx > maxrate)
maxrate = ridx;
if (rs->rs_rates[i] & IEEE80211_RATE_BASIC) {
basicrates |= 1 << ridx;
if (ridx > maxbasicrate)
maxbasicrate = ridx;
}
}
if (ic->ic_curmode == IEEE80211_MODE_11B)
mode = R92C_RAID_11B;
else
mode = R92C_RAID_11BG;
DPRINTF(("mode=0x%x rates=0x%08x, basicrates=0x%08x\n",
mode, rates, basicrates));
/* Set rates mask for group addressed frames. */
cmd.macid = RTWN_MACID_BC | RTWN_MACID_VALID;
cmd.mask = htole32(mode << 28 | basicrates);
error = rtwn_fw_cmd(sc, R92C_CMD_MACID_CONFIG, &cmd, sizeof(cmd));
if (error != 0) {
device_printf(sc->sc_dev,
"could not add broadcast station\n");
return (error);
}
/* Set initial MRR rate. */
DPRINTF(("maxbasicrate=%d\n", maxbasicrate));
rtwn_write_1(sc, R92C_INIDATA_RATE_SEL(RTWN_MACID_BC),
maxbasicrate);
/* Set rates mask for unicast frames. */
cmd.macid = RTWN_MACID_BSS | RTWN_MACID_VALID;
cmd.mask = htole32(mode << 28 | rates);
error = rtwn_fw_cmd(sc, R92C_CMD_MACID_CONFIG, &cmd, sizeof(cmd));
if (error != 0) {
device_printf(sc->sc_dev, "could not add BSS station\n");
return (error);
}
/* Set initial MRR rate. */
DPRINTF(("maxrate=%d\n", maxrate));
rtwn_write_1(sc, R92C_INIDATA_RATE_SEL(RTWN_MACID_BSS),
maxrate);
/* Configure Automatic Rate Fallback Register. */
if (ic->ic_curmode == IEEE80211_MODE_11B) {
if (rates & 0x0c)
rtwn_write_4(sc, R92C_ARFR(0), htole32(rates & 0x0d));
else
rtwn_write_4(sc, R92C_ARFR(0), htole32(rates & 0x0f));
} else
rtwn_write_4(sc, R92C_ARFR(0), htole32(rates & 0x0ff5));
/* Indicate highest supported rate. */
ni->ni_txrate = rs->rs_rates[rs->rs_nrates - 1];
return (0);
}
static void
rtwn_tsf_sync_enable(struct rtwn_softc *sc)
{
struct ieee80211com *ic = &sc->sc_ic;
struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
struct ieee80211_node *ni = vap->iv_bss;
uint64_t tsf;
/* Enable TSF synchronization. */
rtwn_write_1(sc, R92C_BCN_CTRL,
rtwn_read_1(sc, R92C_BCN_CTRL) & ~R92C_BCN_CTRL_DIS_TSF_UDT0);
rtwn_write_1(sc, R92C_BCN_CTRL,
rtwn_read_1(sc, R92C_BCN_CTRL) & ~R92C_BCN_CTRL_EN_BCN);
/* Set initial TSF. */
memcpy(&tsf, ni->ni_tstamp.data, 8);
tsf = le64toh(tsf);
tsf = tsf - (tsf % (vap->iv_bss->ni_intval * IEEE80211_DUR_TU));
tsf -= IEEE80211_DUR_TU;
rtwn_write_4(sc, R92C_TSFTR + 0, tsf);
rtwn_write_4(sc, R92C_TSFTR + 4, tsf >> 32);
rtwn_write_1(sc, R92C_BCN_CTRL,
rtwn_read_1(sc, R92C_BCN_CTRL) | R92C_BCN_CTRL_EN_BCN);
}
static void
rtwn_set_led(struct rtwn_softc *sc, int led, int on)
{
uint8_t reg;
if (led == RTWN_LED_LINK) {
reg = rtwn_read_1(sc, R92C_LEDCFG2) & 0xf0;
if (!on)
reg |= R92C_LEDCFG2_DIS;
else
reg |= R92C_LEDCFG2_EN;
rtwn_write_1(sc, R92C_LEDCFG2, reg);
sc->ledlink = on; /* Save LED state. */
}
}
static void
rtwn_calib_to(void *arg)
{
struct rtwn_softc *sc = arg;
struct r92c_fw_cmd_rssi cmd;
if (sc->avg_pwdb != -1) {
/* Indicate Rx signal strength to FW for rate adaptation. */
memset(&cmd, 0, sizeof(cmd));
cmd.macid = 0; /* BSS. */
cmd.pwdb = sc->avg_pwdb;
DPRINTFN(3, ("sending RSSI command avg=%d\n", sc->avg_pwdb));
rtwn_fw_cmd(sc, R92C_CMD_RSSI_SETTING, &cmd, sizeof(cmd));
}
/* Do temperature compensation. */
rtwn_temp_calib(sc);
callout_reset(&sc->calib_to, hz * 2, rtwn_calib_to, sc);
}
static int
rtwn_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
{
struct rtwn_vap *rvp = RTWN_VAP(vap);
struct ieee80211com *ic = vap->iv_ic;
struct ieee80211_node *ni = vap->iv_bss;
struct rtwn_softc *sc = ic->ic_softc;
uint32_t reg;
IEEE80211_UNLOCK(ic);
RTWN_LOCK(sc);
if (vap->iv_state == IEEE80211_S_RUN) {
/* Stop calibration. */
callout_stop(&sc->calib_to);
/* Turn link LED off. */
rtwn_set_led(sc, RTWN_LED_LINK, 0);
/* Set media status to 'No Link'. */
reg = rtwn_read_4(sc, R92C_CR);
reg = RW(reg, R92C_CR_NETTYPE, R92C_CR_NETTYPE_NOLINK);
rtwn_write_4(sc, R92C_CR, reg);
/* Stop Rx of data frames. */
rtwn_write_2(sc, R92C_RXFLTMAP2, 0);
/* Rest TSF. */
rtwn_write_1(sc, R92C_DUAL_TSF_RST, 0x03);
/* Disable TSF synchronization. */
rtwn_write_1(sc, R92C_BCN_CTRL,
rtwn_read_1(sc, R92C_BCN_CTRL) |
R92C_BCN_CTRL_DIS_TSF_UDT0);
/* Reset EDCA parameters. */
rtwn_write_4(sc, R92C_EDCA_VO_PARAM, 0x002f3217);
rtwn_write_4(sc, R92C_EDCA_VI_PARAM, 0x005e4317);
rtwn_write_4(sc, R92C_EDCA_BE_PARAM, 0x00105320);
rtwn_write_4(sc, R92C_EDCA_BK_PARAM, 0x0000a444);
}
switch (nstate) {
case IEEE80211_S_INIT:
/* Turn link LED off. */
rtwn_set_led(sc, RTWN_LED_LINK, 0);
break;
case IEEE80211_S_SCAN:
/* Make link LED blink during scan. */
rtwn_set_led(sc, RTWN_LED_LINK, !sc->ledlink);
/* Pause AC Tx queues. */
rtwn_write_1(sc, R92C_TXPAUSE,
rtwn_read_1(sc, R92C_TXPAUSE) | 0x0f);
break;
case IEEE80211_S_AUTH:
rtwn_set_chan(sc, ic->ic_curchan, NULL);
break;
case IEEE80211_S_RUN:
if (ic->ic_opmode == IEEE80211_M_MONITOR) {
/* Enable Rx of data frames. */
rtwn_write_2(sc, R92C_RXFLTMAP2, 0xffff);
/* Turn link LED on. */
rtwn_set_led(sc, RTWN_LED_LINK, 1);
break;
}
/* Set media status to 'Associated'. */
reg = rtwn_read_4(sc, R92C_CR);
reg = RW(reg, R92C_CR_NETTYPE, R92C_CR_NETTYPE_INFRA);
rtwn_write_4(sc, R92C_CR, reg);
/* Set BSSID. */
rtwn_write_4(sc, R92C_BSSID + 0, le32dec(&ni->ni_bssid[0]));
rtwn_write_4(sc, R92C_BSSID + 4, le16dec(&ni->ni_bssid[4]));
if (ic->ic_curmode == IEEE80211_MODE_11B)
rtwn_write_1(sc, R92C_INIRTS_RATE_SEL, 0);
else /* 802.11b/g */
rtwn_write_1(sc, R92C_INIRTS_RATE_SEL, 3);
/* Enable Rx of data frames. */
rtwn_write_2(sc, R92C_RXFLTMAP2, 0xffff);
/* Flush all AC queues. */
rtwn_write_1(sc, R92C_TXPAUSE, 0);
/* Set beacon interval. */
rtwn_write_2(sc, R92C_BCN_INTERVAL, ni->ni_intval);
/* Allow Rx from our BSSID only. */
rtwn_write_4(sc, R92C_RCR,
rtwn_read_4(sc, R92C_RCR) |
R92C_RCR_CBSSID_DATA | R92C_RCR_CBSSID_BCN);
/* Enable TSF synchronization. */
rtwn_tsf_sync_enable(sc);
rtwn_write_1(sc, R92C_SIFS_CCK + 1, 10);
rtwn_write_1(sc, R92C_SIFS_OFDM + 1, 10);
rtwn_write_1(sc, R92C_SPEC_SIFS + 1, 10);
rtwn_write_1(sc, R92C_MAC_SPEC_SIFS + 1, 10);
rtwn_write_1(sc, R92C_R2T_SIFS + 1, 10);
rtwn_write_1(sc, R92C_T2T_SIFS + 1, 10);
/* Intialize rate adaptation. */
rtwn_ra_init(sc);
/* Turn link LED on. */
rtwn_set_led(sc, RTWN_LED_LINK, 1);
sc->avg_pwdb = -1; /* Reset average RSSI. */
/* Reset temperature calibration state machine. */
sc->thcal_state = 0;
sc->thcal_lctemp = 0;
/* Start periodic calibration. */
callout_reset(&sc->calib_to, hz * 2, rtwn_calib_to, sc);
break;
default:
break;
}
RTWN_UNLOCK(sc);
IEEE80211_LOCK(ic);
return (rvp->newstate(vap, nstate, arg));
}
static int
rtwn_updateedca(struct ieee80211com *ic)
{
struct rtwn_softc *sc = ic->ic_softc;
const uint16_t aci2reg[WME_NUM_AC] = {
R92C_EDCA_BE_PARAM,
R92C_EDCA_BK_PARAM,
R92C_EDCA_VI_PARAM,
R92C_EDCA_VO_PARAM
};
int aci, aifs, slottime;
IEEE80211_LOCK(ic);
slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20;
for (aci = 0; aci < WME_NUM_AC; aci++) {
const struct wmeParams *ac =
&ic->ic_wme.wme_chanParams.cap_wmeParams[aci];
/* AIFS[AC] = AIFSN[AC] * aSlotTime + aSIFSTime. */
aifs = ac->wmep_aifsn * slottime + 10;
rtwn_write_4(sc, aci2reg[aci],
SM(R92C_EDCA_PARAM_TXOP, ac->wmep_txopLimit) |
SM(R92C_EDCA_PARAM_ECWMIN, ac->wmep_logcwmin) |
SM(R92C_EDCA_PARAM_ECWMAX, ac->wmep_logcwmax) |
SM(R92C_EDCA_PARAM_AIFS, aifs));
}
IEEE80211_UNLOCK(ic);
return (0);
}
static void
rtwn_update_avgrssi(struct rtwn_softc *sc, int rate, int8_t rssi)
{
int pwdb;
/* Convert antenna signal to percentage. */
if (rssi <= -100 || rssi >= 20)
pwdb = 0;
else if (rssi >= 0)
pwdb = 100;
else
pwdb = 100 + rssi;
if (RTWN_RATE_IS_CCK(rate)) {
/* CCK gain is smaller than OFDM/MCS gain. */
pwdb += 6;
if (pwdb > 100)
pwdb = 100;
if (pwdb <= 14)
pwdb -= 4;
else if (pwdb <= 26)
pwdb -= 8;
else if (pwdb <= 34)
pwdb -= 6;
else if (pwdb <= 42)
pwdb -= 2;
}
if (sc->avg_pwdb == -1) /* Init. */
sc->avg_pwdb = pwdb;
else if (sc->avg_pwdb < pwdb)
sc->avg_pwdb = ((sc->avg_pwdb * 19 + pwdb) / 20) + 1;
else
sc->avg_pwdb = ((sc->avg_pwdb * 19 + pwdb) / 20);
DPRINTFN(4, ("PWDB=%d EMA=%d\n", pwdb, sc->avg_pwdb));
}
static int8_t
rtwn_get_rssi(struct rtwn_softc *sc, int rate, void *physt)
{
static const int8_t cckoff[] = { 16, -12, -26, -46 };
struct r92c_rx_phystat *phy;
struct r92c_rx_cck *cck;
uint8_t rpt;
int8_t rssi;
if (RTWN_RATE_IS_CCK(rate)) {
cck = (struct r92c_rx_cck *)physt;
if (sc->sc_flags & RTWN_FLAG_CCK_HIPWR) {
rpt = (cck->agc_rpt >> 5) & 0x3;
rssi = (cck->agc_rpt & 0x1f) << 1;
} else {
rpt = (cck->agc_rpt >> 6) & 0x3;
rssi = cck->agc_rpt & 0x3e;
}
rssi = cckoff[rpt] - rssi;
} else { /* OFDM/HT. */
phy = (struct r92c_rx_phystat *)physt;
rssi = ((le32toh(phy->phydw1) >> 1) & 0x7f) - 110;
}
return (rssi);
}
static void
rtwn_rx_frame(struct rtwn_softc *sc, struct r92c_rx_desc *rx_desc,
struct rtwn_rx_data *rx_data, int desc_idx)
{
struct ieee80211com *ic = &sc->sc_ic;
struct ieee80211_frame_min *wh;
struct ieee80211_node *ni;
struct r92c_rx_phystat *phy = NULL;
uint32_t rxdw0, rxdw3;
struct mbuf *m, *m1;
bus_dma_segment_t segs[1];
bus_addr_t physaddr;
uint8_t rate;
int8_t rssi = 0, nf;
int infosz, nsegs, pktlen, shift, error;
rxdw0 = le32toh(rx_desc->rxdw0);
rxdw3 = le32toh(rx_desc->rxdw3);
if (__predict_false(rxdw0 & (R92C_RXDW0_CRCERR | R92C_RXDW0_ICVERR))) {
/*
* This should not happen since we setup our Rx filter
* to not receive these frames.
*/
counter_u64_add(ic->ic_ierrors, 1);
return;
}
pktlen = MS(rxdw0, R92C_RXDW0_PKTLEN);
if (__predict_false(pktlen < sizeof(struct ieee80211_frame_ack) ||
pktlen > MCLBYTES)) {
counter_u64_add(ic->ic_ierrors, 1);
return;
}
rate = MS(rxdw3, R92C_RXDW3_RATE);
infosz = MS(rxdw0, R92C_RXDW0_INFOSZ) * 8;
if (infosz > sizeof(struct r92c_rx_phystat))
infosz = sizeof(struct r92c_rx_phystat);
shift = MS(rxdw0, R92C_RXDW0_SHIFT);
/* Get RSSI from PHY status descriptor if present. */
if (infosz != 0 && (rxdw0 & R92C_RXDW0_PHYST)) {
phy = mtod(rx_data->m, struct r92c_rx_phystat *);
rssi = rtwn_get_rssi(sc, rate, phy);
/* Update our average RSSI. */
rtwn_update_avgrssi(sc, rate, rssi);
}
DPRINTFN(5, ("Rx frame len=%d rate=%d infosz=%d shift=%d rssi=%d\n",
pktlen, rate, infosz, shift, rssi));
m1 = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
if (m1 == NULL) {
counter_u64_add(ic->ic_ierrors, 1);
return;
}
bus_dmamap_unload(sc->rx_ring.data_dmat, rx_data->map);
error = bus_dmamap_load(sc->rx_ring.data_dmat, rx_data->map,
mtod(m1, void *), MCLBYTES, rtwn_dma_map_addr,
&physaddr, 0);
if (error != 0) {
m_freem(m1);
if (bus_dmamap_load_mbuf_sg(sc->rx_ring.data_dmat,
rx_data->map, rx_data->m, segs, &nsegs, 0))
panic("%s: could not load old RX mbuf",
device_get_name(sc->sc_dev));
/* Physical address may have changed. */
rtwn_setup_rx_desc(sc, rx_desc, physaddr, MCLBYTES, desc_idx);
counter_u64_add(ic->ic_ierrors, 1);
return;
}
/* Finalize mbuf. */
m = rx_data->m;
rx_data->m = m1;
m->m_pkthdr.len = m->m_len = pktlen + infosz + shift;
/* Update RX descriptor. */
rtwn_setup_rx_desc(sc, rx_desc, physaddr, MCLBYTES, desc_idx);
/* Get ieee80211 frame header. */
if (rxdw0 & R92C_RXDW0_PHYST)
m_adj(m, infosz + shift);
else
m_adj(m, shift);
nf = -95;
if (ieee80211_radiotap_active(ic)) {
struct rtwn_rx_radiotap_header *tap = &sc->sc_rxtap;
tap->wr_flags = 0;
if (!(rxdw3 & R92C_RXDW3_HT)) {
tap->wr_rate = ridx2rate[rate];
} else if (rate >= 12) { /* MCS0~15. */
/* Bit 7 set means HT MCS instead of rate. */
tap->wr_rate = 0x80 | (rate - 12);
}
tap->wr_dbm_antsignal = rssi;
tap->wr_chan_freq = htole16(ic->ic_curchan->ic_freq);
tap->wr_chan_flags = htole16(ic->ic_curchan->ic_flags);
}
RTWN_UNLOCK(sc);
wh = mtod(m, struct ieee80211_frame_min *);
if (m->m_len >= sizeof(*wh))
ni = ieee80211_find_rxnode(ic, wh);
else
ni = NULL;
/* Send the frame to the 802.11 layer. */
if (ni != NULL) {
(void)ieee80211_input(ni, m, rssi - nf, nf);
/* Node is no longer needed. */
ieee80211_free_node(ni);
} else
(void)ieee80211_input_all(ic, m, rssi - nf, nf);
RTWN_LOCK(sc);
}
static int
rtwn_tx(struct rtwn_softc *sc, struct mbuf *m, struct ieee80211_node *ni)
{
struct ieee80211com *ic = &sc->sc_ic;
struct ieee80211vap *vap = ni->ni_vap;
struct ieee80211_frame *wh;
struct ieee80211_key *k = NULL;
struct rtwn_tx_ring *tx_ring;
struct rtwn_tx_data *data;
struct r92c_tx_desc *txd;
bus_dma_segment_t segs[1];
uint16_t qos;
uint8_t raid, type, tid, qid;
int nsegs, error;
wh = mtod(m, struct ieee80211_frame *);
type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK;
/* Encrypt the frame if need be. */
if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) {
k = ieee80211_crypto_encap(ni, m);
if (k == NULL) {
m_freem(m);
return (ENOBUFS);
}
/* 802.11 header may have moved. */
wh = mtod(m, struct ieee80211_frame *);
}
if (IEEE80211_QOS_HAS_SEQ(wh)) {
qos = ((const struct ieee80211_qosframe *)wh)->i_qos[0];
tid = qos & IEEE80211_QOS_TID;
} else {
qos = 0;
tid = 0;
}
switch (type) {
case IEEE80211_FC0_TYPE_CTL:
case IEEE80211_FC0_TYPE_MGT:
qid = RTWN_VO_QUEUE;
break;
default:
qid = M_WME_GETAC(m);
break;
}
/* Grab a Tx buffer from the ring. */
tx_ring = &sc->tx_ring[qid];
data = &tx_ring->tx_data[tx_ring->cur];
if (data->m != NULL) {
m_freem(m);
return (ENOBUFS);
}
/* Fill Tx descriptor. */
txd = &tx_ring->desc[tx_ring->cur];
if (htole32(txd->txdw0) & R92C_RXDW0_OWN) {
m_freem(m);
return (ENOBUFS);
}
txd->txdw0 = htole32(
SM(R92C_TXDW0_PKTLEN, m->m_pkthdr.len) |
SM(R92C_TXDW0_OFFSET, sizeof(*txd)) |
R92C_TXDW0_FSG | R92C_TXDW0_LSG);
if (IEEE80211_IS_MULTICAST(wh->i_addr1))
txd->txdw0 |= htole32(R92C_TXDW0_BMCAST);
txd->txdw1 = 0;
txd->txdw4 = 0;
txd->txdw5 = 0;
/* XXX TODO: rate control; implement low-rate for EAPOL */
if (!IEEE80211_IS_MULTICAST(wh->i_addr1) &&
type == IEEE80211_FC0_TYPE_DATA) {
if (ic->ic_curmode == IEEE80211_MODE_11B)
raid = R92C_RAID_11B;
else
raid = R92C_RAID_11BG;
txd->txdw1 |= htole32(
SM(R92C_TXDW1_MACID, RTWN_MACID_BSS) |
SM(R92C_TXDW1_QSEL, R92C_TXDW1_QSEL_BE) |
SM(R92C_TXDW1_RAID, raid) |
R92C_TXDW1_AGGBK);
if (ic->ic_flags & IEEE80211_F_USEPROT) {
if (ic->ic_protmode == IEEE80211_PROT_CTSONLY) {
txd->txdw4 |= htole32(R92C_TXDW4_CTS2SELF |
R92C_TXDW4_HWRTSEN);
} else if (ic->ic_protmode == IEEE80211_PROT_RTSCTS) {
txd->txdw4 |= htole32(R92C_TXDW4_RTSEN |
R92C_TXDW4_HWRTSEN);
}
}
/* XXX TODO: implement rate control */
/* Send RTS at OFDM24. */
txd->txdw4 |= htole32(SM(R92C_TXDW4_RTSRATE,
RTWN_RIDX_OFDM24));
txd->txdw5 |= htole32(SM(R92C_TXDW5_RTSRATE_FBLIMIT, 0xf));
/* Send data at OFDM54. */
txd->txdw5 |= htole32(SM(R92C_TXDW5_DATARATE,
RTWN_RIDX_OFDM54));
txd->txdw5 |= htole32(SM(R92C_TXDW5_DATARATE_FBLIMIT, 0x1f));
} else {
txd->txdw1 |= htole32(
SM(R92C_TXDW1_MACID, 0) |
SM(R92C_TXDW1_QSEL, R92C_TXDW1_QSEL_MGNT) |
SM(R92C_TXDW1_RAID, R92C_RAID_11B));
/* Force CCK1. */
txd->txdw4 |= htole32(R92C_TXDW4_DRVRATE);
txd->txdw5 |= htole32(SM(R92C_TXDW5_DATARATE, RTWN_RIDX_CCK1));
}
/* Set sequence number (already little endian). */
txd->txdseq = htole16(M_SEQNO_GET(m) % IEEE80211_SEQ_RANGE);
if (!qos) {
/* Use HW sequence numbering for non-QoS frames. */
txd->txdw4 |= htole32(R92C_TXDW4_HWSEQ);
txd->txdseq |= htole16(0x8000);
} else
txd->txdw4 |= htole32(R92C_TXDW4_QOS);
error = bus_dmamap_load_mbuf_sg(tx_ring->data_dmat, data->map, m, segs,
&nsegs, BUS_DMA_NOWAIT);
if (error != 0 && error != EFBIG) {
device_printf(sc->sc_dev, "can't map mbuf (error %d)\n", error);
m_freem(m);
return (error);
}
if (error != 0) {
struct mbuf *mnew;
mnew = m_defrag(m, M_NOWAIT);
if (mnew == NULL) {
device_printf(sc->sc_dev,
"can't defragment mbuf\n");
m_freem(m);
return (ENOBUFS);
}
m = mnew;
error = bus_dmamap_load_mbuf_sg(tx_ring->data_dmat, data->map,
m, segs, &nsegs, BUS_DMA_NOWAIT);
if (error != 0) {
device_printf(sc->sc_dev,
"can't map mbuf (error %d)\n", error);
m_freem(m);
return (error);
}
}
txd->txbufaddr = htole32(segs[0].ds_addr);
txd->txbufsize = htole16(m->m_pkthdr.len);
bus_space_barrier(sc->sc_st, sc->sc_sh, 0, sc->sc_mapsize,
BUS_SPACE_BARRIER_WRITE);
txd->txdw0 |= htole32(R92C_TXDW0_OWN);
bus_dmamap_sync(tx_ring->desc_dmat, tx_ring->desc_map,
BUS_DMASYNC_POSTWRITE);
bus_dmamap_sync(tx_ring->data_dmat, data->map, BUS_DMASYNC_POSTWRITE);
data->m = m;
data->ni = ni;
if (ieee80211_radiotap_active_vap(vap)) {
struct rtwn_tx_radiotap_header *tap = &sc->sc_txtap;
tap->wt_flags = 0;
tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq);
tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags);
ieee80211_radiotap_tx(vap, m);
}
tx_ring->cur = (tx_ring->cur + 1) % RTWN_TX_LIST_COUNT;
tx_ring->queued++;
if (tx_ring->queued >= (RTWN_TX_LIST_COUNT - 1))
sc->qfullmsk |= (1 << qid);
/* Kick TX. */
rtwn_write_2(sc, R92C_PCIE_CTRL_REG, (1 << qid));
return (0);
}
static void
rtwn_tx_done(struct rtwn_softc *sc, int qid)
{
struct rtwn_tx_ring *tx_ring = &sc->tx_ring[qid];
struct rtwn_tx_data *tx_data;
struct r92c_tx_desc *tx_desc;
int i;
bus_dmamap_sync(tx_ring->desc_dmat, tx_ring->desc_map,
BUS_DMASYNC_POSTREAD);
for (i = 0; i < RTWN_TX_LIST_COUNT; i++) {
tx_data = &tx_ring->tx_data[i];
if (tx_data->m == NULL)
continue;
tx_desc = &tx_ring->desc[i];
if (le32toh(tx_desc->txdw0) & R92C_TXDW0_OWN)
continue;
/* Unmap and free mbuf. */
bus_dmamap_sync(tx_ring->data_dmat, tx_data->map,
BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(tx_ring->data_dmat, tx_data->map);
/*
* XXX TODO: figure out whether the transmit succeeded or not.
* .. and then notify rate control.
*/
ieee80211_tx_complete(tx_data->ni, tx_data->m, 0);
tx_data->ni = NULL;
tx_data->m = NULL;
if (--tx_ring->queued)
sc->sc_tx_timer = 5;
else
sc->sc_tx_timer = 0;
}
if (tx_ring->queued < (RTWN_TX_LIST_COUNT - 1))
sc->qfullmsk &= ~(1 << qid);
rtwn_start(sc);
}
static int
rtwn_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
const struct ieee80211_bpf_params *params)
{
struct ieee80211com *ic = ni->ni_ic;
struct rtwn_softc *sc = ic->ic_softc;
RTWN_LOCK(sc);
/* Prevent management frames from being sent if we're not ready. */
if (!(sc->sc_flags & RTWN_RUNNING)) {
RTWN_UNLOCK(sc);
m_freem(m);
return (ENETDOWN);
}
if (rtwn_tx(sc, m, ni) != 0) {
RTWN_UNLOCK(sc);
return (EIO);
}
sc->sc_tx_timer = 5;
RTWN_UNLOCK(sc);
return (0);
}
static int
rtwn_transmit(struct ieee80211com *ic, struct mbuf *m)
{
struct rtwn_softc *sc = ic->ic_softc;
int error;
RTWN_LOCK(sc);
if ((sc->sc_flags & RTWN_RUNNING) == 0) {
RTWN_UNLOCK(sc);
return (ENXIO);
}
error = mbufq_enqueue(&sc->sc_snd, m);
if (error) {
RTWN_UNLOCK(sc);
return (error);
}
rtwn_start(sc);
RTWN_UNLOCK(sc);
return (0);
}
static void
rtwn_parent(struct ieee80211com *ic)
{
struct rtwn_softc *sc = ic->ic_softc;
struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
if (ic->ic_nrunning > 0) {
if (rtwn_init(sc) == 0)
ieee80211_start_all(ic);
else
ieee80211_stop(vap);
} else
rtwn_stop(sc);
}
static void
rtwn_start(struct rtwn_softc *sc)
{
struct ieee80211_node *ni;
struct mbuf *m;
RTWN_LOCK_ASSERT(sc);
if ((sc->sc_flags & RTWN_RUNNING) == 0)
return;
while (sc->qfullmsk == 0 && (m = mbufq_dequeue(&sc->sc_snd)) != NULL) {
ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
if (rtwn_tx(sc, m, ni) != 0) {
if_inc_counter(ni->ni_vap->iv_ifp,
IFCOUNTER_OERRORS, 1);
ieee80211_free_node(ni);
continue;
}
sc->sc_tx_timer = 5;
}
}
static void
rtwn_watchdog(void *arg)
{
struct rtwn_softc *sc = arg;
struct ieee80211com *ic = &sc->sc_ic;
RTWN_LOCK_ASSERT(sc);
KASSERT(sc->sc_flags & RTWN_RUNNING, ("not running"));
if (sc->sc_tx_timer != 0 && --sc->sc_tx_timer == 0) {
ic_printf(ic, "device timeout\n");
ieee80211_restart_all(ic);
return;
}
callout_reset(&sc->watchdog_to, hz, rtwn_watchdog, sc);
}
static int
rtwn_power_on(struct rtwn_softc *sc)
{
uint32_t reg;
int ntries;
/* Wait for autoload done bit. */
for (ntries = 0; ntries < 1000; ntries++) {
if (rtwn_read_1(sc, R92C_APS_FSMCO) & R92C_APS_FSMCO_PFM_ALDN)
break;
DELAY(5);
}
if (ntries == 1000) {
device_printf(sc->sc_dev,
"timeout waiting for chip autoload\n");
return (ETIMEDOUT);
}
/* Unlock ISO/CLK/Power control register. */
rtwn_write_1(sc, R92C_RSV_CTRL, 0);
/* TODO: check if we need this for 8188CE */
if (sc->board_type != R92C_BOARD_TYPE_DONGLE) {
/* bt coex */
reg = rtwn_read_4(sc, R92C_APS_FSMCO);
reg |= (R92C_APS_FSMCO_SOP_ABG |
R92C_APS_FSMCO_SOP_AMB |
R92C_APS_FSMCO_XOP_BTCK);
rtwn_write_4(sc, R92C_APS_FSMCO, reg);
}
/* Move SPS into PWM mode. */
rtwn_write_1(sc, R92C_SPS0_CTRL, 0x2b);
/* Set low byte to 0x0f, leave others unchanged. */
rtwn_write_4(sc, R92C_AFE_XTAL_CTRL,
(rtwn_read_4(sc, R92C_AFE_XTAL_CTRL) & 0xffffff00) | 0x0f);
/* TODO: check if we need this for 8188CE */
if (sc->board_type != R92C_BOARD_TYPE_DONGLE) {
/* bt coex */
reg = rtwn_read_4(sc, R92C_AFE_XTAL_CTRL);
reg &= (~0x00024800); /* XXX magic from linux */
rtwn_write_4(sc, R92C_AFE_XTAL_CTRL, reg);
}
rtwn_write_2(sc, R92C_SYS_ISO_CTRL,
(rtwn_read_2(sc, R92C_SYS_ISO_CTRL) & 0xff) |
R92C_SYS_ISO_CTRL_PWC_EV12V | R92C_SYS_ISO_CTRL_DIOR);
DELAY(200);
/* TODO: linux does additional btcoex stuff here */
/* Auto enable WLAN. */
rtwn_write_2(sc, R92C_APS_FSMCO,
rtwn_read_2(sc, R92C_APS_FSMCO) | R92C_APS_FSMCO_APFM_ONMAC);
for (ntries = 0; ntries < 1000; ntries++) {
if (!(rtwn_read_2(sc, R92C_APS_FSMCO) &
R92C_APS_FSMCO_APFM_ONMAC))
break;
DELAY(5);
}
if (ntries == 1000) {
device_printf(sc->sc_dev, "timeout waiting for MAC auto ON\n");
return (ETIMEDOUT);
}
/* Enable radio, GPIO and LED functions. */
rtwn_write_2(sc, R92C_APS_FSMCO,
R92C_APS_FSMCO_AFSM_PCIE |
R92C_APS_FSMCO_PDN_EN |
R92C_APS_FSMCO_PFM_ALDN);
/* Release RF digital isolation. */
rtwn_write_2(sc, R92C_SYS_ISO_CTRL,
rtwn_read_2(sc, R92C_SYS_ISO_CTRL) & ~R92C_SYS_ISO_CTRL_DIOR);
if (sc->chip & RTWN_CHIP_92C)
rtwn_write_1(sc, R92C_PCIE_CTRL_REG + 3, 0x77);
else
rtwn_write_1(sc, R92C_PCIE_CTRL_REG + 3, 0x22);
rtwn_write_4(sc, R92C_INT_MIG, 0);
if (sc->board_type != R92C_BOARD_TYPE_DONGLE) {
/* bt coex */
reg = rtwn_read_4(sc, R92C_AFE_XTAL_CTRL + 2);
reg &= 0xfd; /* XXX magic from linux */
rtwn_write_4(sc, R92C_AFE_XTAL_CTRL + 2, reg);
}
rtwn_write_1(sc, R92C_GPIO_MUXCFG,
rtwn_read_1(sc, R92C_GPIO_MUXCFG) & ~R92C_GPIO_MUXCFG_RFKILL);
reg = rtwn_read_1(sc, R92C_GPIO_IO_SEL);
if (!(reg & R92C_GPIO_IO_SEL_RFKILL)) {
device_printf(sc->sc_dev,
"radio is disabled by hardware switch\n");
return (EPERM);
}
/* Initialize MAC. */
reg = rtwn_read_1(sc, R92C_APSD_CTRL);
rtwn_write_1(sc, R92C_APSD_CTRL,
rtwn_read_1(sc, R92C_APSD_CTRL) & ~R92C_APSD_CTRL_OFF);
for (ntries = 0; ntries < 200; ntries++) {
if (!(rtwn_read_1(sc, R92C_APSD_CTRL) &
R92C_APSD_CTRL_OFF_STATUS))
break;
DELAY(500);
}
if (ntries == 200) {
device_printf(sc->sc_dev,
"timeout waiting for MAC initialization\n");
return (ETIMEDOUT);
}
/* Enable MAC DMA/WMAC/SCHEDULE/SEC blocks. */
reg = rtwn_read_2(sc, R92C_CR);
reg |= R92C_CR_HCI_TXDMA_EN | R92C_CR_HCI_RXDMA_EN |
R92C_CR_TXDMA_EN | R92C_CR_RXDMA_EN | R92C_CR_PROTOCOL_EN |
R92C_CR_SCHEDULE_EN | R92C_CR_MACTXEN | R92C_CR_MACRXEN |
R92C_CR_ENSEC;
rtwn_write_2(sc, R92C_CR, reg);
rtwn_write_1(sc, 0xfe10, 0x19);
return (0);
}
static int
rtwn_llt_init(struct rtwn_softc *sc)
{
int i, error;
/* Reserve pages [0; R92C_TX_PAGE_COUNT]. */
for (i = 0; i < R92C_TX_PAGE_COUNT; i++) {
if ((error = rtwn_llt_write(sc, i, i + 1)) != 0)
return (error);
}
/* NB: 0xff indicates end-of-list. */
if ((error = rtwn_llt_write(sc, i, 0xff)) != 0)
return (error);
/*
* Use pages [R92C_TX_PAGE_COUNT + 1; R92C_TXPKTBUF_COUNT - 1]
* as ring buffer.
*/
for (++i; i < R92C_TXPKTBUF_COUNT - 1; i++) {
if ((error = rtwn_llt_write(sc, i, i + 1)) != 0)
return (error);
}
/* Make the last page point to the beginning of the ring buffer. */
error = rtwn_llt_write(sc, i, R92C_TX_PAGE_COUNT + 1);
return (error);
}
static void
rtwn_fw_reset(struct rtwn_softc *sc)
{
uint16_t reg;
int ntries;
/* Tell 8051 to reset itself. */
rtwn_write_1(sc, R92C_HMETFR + 3, 0x20);
/* Wait until 8051 resets by itself. */
for (ntries = 0; ntries < 100; ntries++) {
reg = rtwn_read_2(sc, R92C_SYS_FUNC_EN);
if (!(reg & R92C_SYS_FUNC_EN_CPUEN))
goto sleep;
DELAY(50);
}
/* Force 8051 reset. */
rtwn_write_2(sc, R92C_SYS_FUNC_EN, reg & ~R92C_SYS_FUNC_EN_CPUEN);
sleep:
/*
* We must sleep for one second to let the firmware settle.
* Accessing registers too early will hang the whole system.
*/
if (msleep(&reg, &sc->sc_mtx, 0, "rtwnrst", hz)) {
device_printf(sc->sc_dev, "timeout waiting for firmware "
"initialization to complete\n");
}
}
static void
rtwn_fw_loadpage(struct rtwn_softc *sc, int page, const uint8_t *buf, int len)
{
uint32_t reg;
int off, mlen, i;
reg = rtwn_read_4(sc, R92C_MCUFWDL);
reg = RW(reg, R92C_MCUFWDL_PAGE, page);
rtwn_write_4(sc, R92C_MCUFWDL, reg);
DELAY(5);
off = R92C_FW_START_ADDR;
while (len > 0) {
if (len > 196)
mlen = 196;
else if (len > 4)
mlen = 4;
else
mlen = 1;
for (i = 0; i < mlen; i++)
rtwn_write_1(sc, off++, buf[i]);
buf += mlen;
len -= mlen;
}
}
static int
rtwn_load_firmware(struct rtwn_softc *sc)
{
const struct firmware *fw;
const struct r92c_fw_hdr *hdr;
const char *name;
const u_char *ptr;
size_t len;
uint32_t reg;
int mlen, ntries, page, error = 0;
/* Read firmware image from the filesystem. */
if ((sc->chip & (RTWN_CHIP_UMC_A_CUT | RTWN_CHIP_92C)) ==
RTWN_CHIP_UMC_A_CUT)
name = "rtwn-rtl8192cfwU";
else
name = "rtwn-rtl8192cfwU_B";
RTWN_UNLOCK(sc);
fw = firmware_get(name);
RTWN_LOCK(sc);
if (fw == NULL) {
device_printf(sc->sc_dev,
"could not read firmware %s\n", name);
return (ENOENT);
}
len = fw->datasize;
if (len < sizeof(*hdr)) {
device_printf(sc->sc_dev, "firmware too short\n");
error = EINVAL;
goto fail;
}
ptr = fw->data;
hdr = (const struct r92c_fw_hdr *)ptr;
/* Check if there is a valid FW header and skip it. */
if ((le16toh(hdr->signature) >> 4) == 0x88c ||
(le16toh(hdr->signature) >> 4) == 0x92c) {
DPRINTF(("FW V%d.%d %02d-%02d %02d:%02d\n",
le16toh(hdr->version), le16toh(hdr->subversion),
hdr->month, hdr->date, hdr->hour, hdr->minute));
ptr += sizeof(*hdr);
len -= sizeof(*hdr);
}
if (rtwn_read_1(sc, R92C_MCUFWDL) & R92C_MCUFWDL_RAM_DL_SEL)
rtwn_fw_reset(sc);
/* Enable FW download. */
rtwn_write_2(sc, R92C_SYS_FUNC_EN,
rtwn_read_2(sc, R92C_SYS_FUNC_EN) |
R92C_SYS_FUNC_EN_CPUEN);
rtwn_write_1(sc, R92C_MCUFWDL,
rtwn_read_1(sc, R92C_MCUFWDL) | R92C_MCUFWDL_EN);
rtwn_write_1(sc, R92C_MCUFWDL + 2,
rtwn_read_1(sc, R92C_MCUFWDL + 2) & ~0x08);
/* Reset the FWDL checksum. */
rtwn_write_1(sc, R92C_MCUFWDL,
rtwn_read_1(sc, R92C_MCUFWDL) | R92C_MCUFWDL_CHKSUM_RPT);
for (page = 0; len > 0; page++) {
mlen = MIN(len, R92C_FW_PAGE_SIZE);
rtwn_fw_loadpage(sc, page, ptr, mlen);
ptr += mlen;
len -= mlen;
}
/* Disable FW download. */
rtwn_write_1(sc, R92C_MCUFWDL,
rtwn_read_1(sc, R92C_MCUFWDL) & ~R92C_MCUFWDL_EN);
rtwn_write_1(sc, R92C_MCUFWDL + 1, 0);
/* Wait for checksum report. */
for (ntries = 0; ntries < 1000; ntries++) {
if (rtwn_read_4(sc, R92C_MCUFWDL) & R92C_MCUFWDL_CHKSUM_RPT)
break;
DELAY(5);
}
if (ntries == 1000) {
device_printf(sc->sc_dev,
"timeout waiting for checksum report\n");
error = ETIMEDOUT;
goto fail;
}
reg = rtwn_read_4(sc, R92C_MCUFWDL);
reg = (reg & ~R92C_MCUFWDL_WINTINI_RDY) | R92C_MCUFWDL_RDY;
rtwn_write_4(sc, R92C_MCUFWDL, reg);
/* Wait for firmware readiness. */
for (ntries = 0; ntries < 2000; ntries++) {
if (rtwn_read_4(sc, R92C_MCUFWDL) & R92C_MCUFWDL_WINTINI_RDY)
break;
DELAY(50);
}
if (ntries == 1000) {
device_printf(sc->sc_dev,
"timeout waiting for firmware readiness\n");
error = ETIMEDOUT;
goto fail;
}
fail:
firmware_put(fw, FIRMWARE_UNLOAD);
return (error);
}
static int
rtwn_dma_init(struct rtwn_softc *sc)
{
uint32_t reg;
int error;
/* Initialize LLT table. */
error = rtwn_llt_init(sc);
if (error != 0)
return error;
/* Set number of pages for normal priority queue. */
rtwn_write_2(sc, R92C_RQPN_NPQ, 0);
rtwn_write_4(sc, R92C_RQPN,
/* Set number of pages for public queue. */
SM(R92C_RQPN_PUBQ, R92C_PUBQ_NPAGES) |
/* Set number of pages for high priority queue. */
SM(R92C_RQPN_HPQ, R92C_HPQ_NPAGES) |
/* Set number of pages for low priority queue. */
SM(R92C_RQPN_LPQ, R92C_LPQ_NPAGES) |
/* Load values. */
R92C_RQPN_LD);
rtwn_write_1(sc, R92C_TXPKTBUF_BCNQ_BDNY, R92C_TX_PAGE_BOUNDARY);
rtwn_write_1(sc, R92C_TXPKTBUF_MGQ_BDNY, R92C_TX_PAGE_BOUNDARY);
rtwn_write_1(sc, R92C_TXPKTBUF_WMAC_LBK_BF_HD, R92C_TX_PAGE_BOUNDARY);
rtwn_write_1(sc, R92C_TRXFF_BNDY, R92C_TX_PAGE_BOUNDARY);
rtwn_write_1(sc, R92C_TDECTRL + 1, R92C_TX_PAGE_BOUNDARY);
reg = rtwn_read_2(sc, R92C_TRXDMA_CTRL);
reg &= ~R92C_TRXDMA_CTRL_QMAP_M;
reg |= 0xF771;
rtwn_write_2(sc, R92C_TRXDMA_CTRL, reg);
rtwn_write_4(sc, R92C_TCR, R92C_TCR_CFENDFORM | (1 << 12) | (1 << 13));
/* Configure Tx DMA. */
rtwn_write_4(sc, R92C_BKQ_DESA, sc->tx_ring[RTWN_BK_QUEUE].paddr);
rtwn_write_4(sc, R92C_BEQ_DESA, sc->tx_ring[RTWN_BE_QUEUE].paddr);
rtwn_write_4(sc, R92C_VIQ_DESA, sc->tx_ring[RTWN_VI_QUEUE].paddr);
rtwn_write_4(sc, R92C_VOQ_DESA, sc->tx_ring[RTWN_VO_QUEUE].paddr);
rtwn_write_4(sc, R92C_BCNQ_DESA, sc->tx_ring[RTWN_BEACON_QUEUE].paddr);
rtwn_write_4(sc, R92C_MGQ_DESA, sc->tx_ring[RTWN_MGNT_QUEUE].paddr);
rtwn_write_4(sc, R92C_HQ_DESA, sc->tx_ring[RTWN_HIGH_QUEUE].paddr);
/* Configure Rx DMA. */
rtwn_write_4(sc, R92C_RX_DESA, sc->rx_ring.paddr);
/* Set Tx/Rx transfer page boundary. */
rtwn_write_2(sc, R92C_TRXFF_BNDY + 2, 0x27ff);
/* Set Tx/Rx transfer page size. */
rtwn_write_1(sc, R92C_PBP,
SM(R92C_PBP_PSRX, R92C_PBP_128) |
SM(R92C_PBP_PSTX, R92C_PBP_128));
return (0);
}
static void
rtwn_mac_init(struct rtwn_softc *sc)
{
int i;
/* Write MAC initialization values. */
for (i = 0; i < nitems(rtl8192ce_mac); i++)
rtwn_write_1(sc, rtl8192ce_mac[i].reg, rtl8192ce_mac[i].val);
}
static void
rtwn_bb_init(struct rtwn_softc *sc)
{
const struct rtwn_bb_prog *prog;
uint32_t reg;
int i;
/* Enable BB and RF. */
rtwn_write_2(sc, R92C_SYS_FUNC_EN,
rtwn_read_2(sc, R92C_SYS_FUNC_EN) |
R92C_SYS_FUNC_EN_BBRSTB | R92C_SYS_FUNC_EN_BB_GLB_RST |
R92C_SYS_FUNC_EN_DIO_RF);
rtwn_write_2(sc, R92C_AFE_PLL_CTRL, 0xdb83);
rtwn_write_1(sc, R92C_RF_CTRL,
R92C_RF_CTRL_EN | R92C_RF_CTRL_RSTB | R92C_RF_CTRL_SDMRSTB);
rtwn_write_1(sc, R92C_SYS_FUNC_EN,
R92C_SYS_FUNC_EN_DIO_PCIE | R92C_SYS_FUNC_EN_PCIEA |
R92C_SYS_FUNC_EN_PPLL | R92C_SYS_FUNC_EN_BB_GLB_RST |
R92C_SYS_FUNC_EN_BBRSTB);
rtwn_write_1(sc, R92C_AFE_XTAL_CTRL + 1, 0x80);
rtwn_write_4(sc, R92C_LEDCFG0,
rtwn_read_4(sc, R92C_LEDCFG0) | 0x00800000);
/* Select BB programming. */
prog = (sc->chip & RTWN_CHIP_92C) ?
&rtl8192ce_bb_prog_2t : &rtl8192ce_bb_prog_1t;
/* Write BB initialization values. */
for (i = 0; i < prog->count; i++) {
rtwn_bb_write(sc, prog->regs[i], prog->vals[i]);
DELAY(1);
}
if (sc->chip & RTWN_CHIP_92C_1T2R) {
/* 8192C 1T only configuration. */
reg = rtwn_bb_read(sc, R92C_FPGA0_TXINFO);
reg = (reg & ~0x00000003) | 0x2;
rtwn_bb_write(sc, R92C_FPGA0_TXINFO, reg);
reg = rtwn_bb_read(sc, R92C_FPGA1_TXINFO);
reg = (reg & ~0x00300033) | 0x00200022;
rtwn_bb_write(sc, R92C_FPGA1_TXINFO, reg);
reg = rtwn_bb_read(sc, R92C_CCK0_AFESETTING);
reg = (reg & ~0xff000000) | 0x45 << 24;
rtwn_bb_write(sc, R92C_CCK0_AFESETTING, reg);
reg = rtwn_bb_read(sc, R92C_OFDM0_TRXPATHENA);
reg = (reg & ~0x000000ff) | 0x23;
rtwn_bb_write(sc, R92C_OFDM0_TRXPATHENA, reg);
reg = rtwn_bb_read(sc, R92C_OFDM0_AGCPARAM1);
reg = (reg & ~0x00000030) | 1 << 4;
rtwn_bb_write(sc, R92C_OFDM0_AGCPARAM1, reg);
reg = rtwn_bb_read(sc, 0xe74);
reg = (reg & ~0x0c000000) | 2 << 26;
rtwn_bb_write(sc, 0xe74, reg);
reg = rtwn_bb_read(sc, 0xe78);
reg = (reg & ~0x0c000000) | 2 << 26;
rtwn_bb_write(sc, 0xe78, reg);
reg = rtwn_bb_read(sc, 0xe7c);
reg = (reg & ~0x0c000000) | 2 << 26;
rtwn_bb_write(sc, 0xe7c, reg);
reg = rtwn_bb_read(sc, 0xe80);
reg = (reg & ~0x0c000000) | 2 << 26;
rtwn_bb_write(sc, 0xe80, reg);
reg = rtwn_bb_read(sc, 0xe88);
reg = (reg & ~0x0c000000) | 2 << 26;
rtwn_bb_write(sc, 0xe88, reg);
}
/* Write AGC values. */
for (i = 0; i < prog->agccount; i++) {
rtwn_bb_write(sc, R92C_OFDM0_AGCRSSITABLE,
prog->agcvals[i]);
DELAY(1);
}
if (rtwn_bb_read(sc, R92C_HSSI_PARAM2(0)) &
R92C_HSSI_PARAM2_CCK_HIPWR)
sc->sc_flags |= RTWN_FLAG_CCK_HIPWR;
}
static void
rtwn_rf_init(struct rtwn_softc *sc)
{
const struct rtwn_rf_prog *prog;
uint32_t reg, type;
int i, j, idx, off;
/* Select RF programming based on board type. */
if (!(sc->chip & RTWN_CHIP_92C)) {
if (sc->board_type == R92C_BOARD_TYPE_MINICARD)
prog = rtl8188ce_rf_prog;
else if (sc->board_type == R92C_BOARD_TYPE_HIGHPA)
prog = rtl8188ru_rf_prog;
else
prog = rtl8188cu_rf_prog;
} else
prog = rtl8192ce_rf_prog;
for (i = 0; i < sc->nrxchains; i++) {
/* Save RF_ENV control type. */
idx = i / 2;
off = (i % 2) * 16;
reg = rtwn_bb_read(sc, R92C_FPGA0_RFIFACESW(idx));
type = (reg >> off) & 0x10;
/* Set RF_ENV enable. */
reg = rtwn_bb_read(sc, R92C_FPGA0_RFIFACEOE(i));
reg |= 0x100000;
rtwn_bb_write(sc, R92C_FPGA0_RFIFACEOE(i), reg);
DELAY(1);
/* Set RF_ENV output high. */
reg = rtwn_bb_read(sc, R92C_FPGA0_RFIFACEOE(i));
reg |= 0x10;
rtwn_bb_write(sc, R92C_FPGA0_RFIFACEOE(i), reg);
DELAY(1);
/* Set address and data lengths of RF registers. */
reg = rtwn_bb_read(sc, R92C_HSSI_PARAM2(i));
reg &= ~R92C_HSSI_PARAM2_ADDR_LENGTH;
rtwn_bb_write(sc, R92C_HSSI_PARAM2(i), reg);
DELAY(1);
reg = rtwn_bb_read(sc, R92C_HSSI_PARAM2(i));
reg &= ~R92C_HSSI_PARAM2_DATA_LENGTH;
rtwn_bb_write(sc, R92C_HSSI_PARAM2(i), reg);
DELAY(1);
/* Write RF initialization values for this chain. */
for (j = 0; j < prog[i].count; j++) {
if (prog[i].regs[j] >= 0xf9 &&
prog[i].regs[j] <= 0xfe) {
/*
* These are fake RF registers offsets that
* indicate a delay is required.
*/
DELAY(50);
continue;
}
rtwn_rf_write(sc, i, prog[i].regs[j],
prog[i].vals[j]);
DELAY(1);
}
/* Restore RF_ENV control type. */
reg = rtwn_bb_read(sc, R92C_FPGA0_RFIFACESW(idx));
reg &= ~(0x10 << off) | (type << off);
rtwn_bb_write(sc, R92C_FPGA0_RFIFACESW(idx), reg);
/* Cache RF register CHNLBW. */
sc->rf_chnlbw[i] = rtwn_rf_read(sc, i, R92C_RF_CHNLBW);
}
if ((sc->chip & (RTWN_CHIP_UMC_A_CUT | RTWN_CHIP_92C)) ==
RTWN_CHIP_UMC_A_CUT) {
rtwn_rf_write(sc, 0, R92C_RF_RX_G1, 0x30255);
rtwn_rf_write(sc, 0, R92C_RF_RX_G2, 0x50a00);
}
}
static void
rtwn_cam_init(struct rtwn_softc *sc)
{
/* Invalidate all CAM entries. */
rtwn_write_4(sc, R92C_CAMCMD,
R92C_CAMCMD_POLLING | R92C_CAMCMD_CLR);
}
static void
rtwn_pa_bias_init(struct rtwn_softc *sc)
{
uint8_t reg;
int i;
for (i = 0; i < sc->nrxchains; i++) {
if (sc->pa_setting & (1 << i))
continue;
rtwn_rf_write(sc, i, R92C_RF_IPA, 0x0f406);
rtwn_rf_write(sc, i, R92C_RF_IPA, 0x4f406);
rtwn_rf_write(sc, i, R92C_RF_IPA, 0x8f406);
rtwn_rf_write(sc, i, R92C_RF_IPA, 0xcf406);
}
if (!(sc->pa_setting & 0x10)) {
reg = rtwn_read_1(sc, 0x16);
reg = (reg & ~0xf0) | 0x90;
rtwn_write_1(sc, 0x16, reg);
}
}
static void
rtwn_rxfilter_init(struct rtwn_softc *sc)
{
/* Initialize Rx filter. */
/* TODO: use better filter for monitor mode. */
rtwn_write_4(sc, R92C_RCR,
R92C_RCR_AAP | R92C_RCR_APM | R92C_RCR_AM | R92C_RCR_AB |
R92C_RCR_APP_ICV | R92C_RCR_AMF | R92C_RCR_HTC_LOC_CTRL |
R92C_RCR_APP_MIC | R92C_RCR_APP_PHYSTS);
/* Accept all multicast frames. */
rtwn_write_4(sc, R92C_MAR + 0, 0xffffffff);
rtwn_write_4(sc, R92C_MAR + 4, 0xffffffff);
/* Accept all management frames. */
rtwn_write_2(sc, R92C_RXFLTMAP0, 0xffff);
/* Reject all control frames. */
rtwn_write_2(sc, R92C_RXFLTMAP1, 0x0000);
/* Accept all data frames. */
rtwn_write_2(sc, R92C_RXFLTMAP2, 0xffff);
}
static void
rtwn_edca_init(struct rtwn_softc *sc)
{
rtwn_write_2(sc, R92C_SPEC_SIFS, 0x1010);
rtwn_write_2(sc, R92C_MAC_SPEC_SIFS, 0x1010);
rtwn_write_2(sc, R92C_SIFS_CCK, 0x1010);
rtwn_write_2(sc, R92C_SIFS_OFDM, 0x0e0e);
rtwn_write_4(sc, R92C_EDCA_BE_PARAM, 0x005ea42b);
rtwn_write_4(sc, R92C_EDCA_BK_PARAM, 0x0000a44f);
rtwn_write_4(sc, R92C_EDCA_VI_PARAM, 0x005e4322);
rtwn_write_4(sc, R92C_EDCA_VO_PARAM, 0x002f3222);
}
static void
rtwn_write_txpower(struct rtwn_softc *sc, int chain,
uint16_t power[RTWN_RIDX_COUNT])
{
uint32_t reg;
/* Write per-CCK rate Tx power. */
if (chain == 0) {
reg = rtwn_bb_read(sc, R92C_TXAGC_A_CCK1_MCS32);
reg = RW(reg, R92C_TXAGC_A_CCK1, power[0]);
rtwn_bb_write(sc, R92C_TXAGC_A_CCK1_MCS32, reg);
reg = rtwn_bb_read(sc, R92C_TXAGC_B_CCK11_A_CCK2_11);
reg = RW(reg, R92C_TXAGC_A_CCK2, power[1]);
reg = RW(reg, R92C_TXAGC_A_CCK55, power[2]);
reg = RW(reg, R92C_TXAGC_A_CCK11, power[3]);
rtwn_bb_write(sc, R92C_TXAGC_B_CCK11_A_CCK2_11, reg);
} else {
reg = rtwn_bb_read(sc, R92C_TXAGC_B_CCK1_55_MCS32);
reg = RW(reg, R92C_TXAGC_B_CCK1, power[0]);
reg = RW(reg, R92C_TXAGC_B_CCK2, power[1]);
reg = RW(reg, R92C_TXAGC_B_CCK55, power[2]);
rtwn_bb_write(sc, R92C_TXAGC_B_CCK1_55_MCS32, reg);
reg = rtwn_bb_read(sc, R92C_TXAGC_B_CCK11_A_CCK2_11);
reg = RW(reg, R92C_TXAGC_B_CCK11, power[3]);
rtwn_bb_write(sc, R92C_TXAGC_B_CCK11_A_CCK2_11, reg);
}
/* Write per-OFDM rate Tx power. */
rtwn_bb_write(sc, R92C_TXAGC_RATE18_06(chain),
SM(R92C_TXAGC_RATE06, power[ 4]) |
SM(R92C_TXAGC_RATE09, power[ 5]) |
SM(R92C_TXAGC_RATE12, power[ 6]) |
SM(R92C_TXAGC_RATE18, power[ 7]));
rtwn_bb_write(sc, R92C_TXAGC_RATE54_24(chain),
SM(R92C_TXAGC_RATE24, power[ 8]) |
SM(R92C_TXAGC_RATE36, power[ 9]) |
SM(R92C_TXAGC_RATE48, power[10]) |
SM(R92C_TXAGC_RATE54, power[11]));
/* Write per-MCS Tx power. */
rtwn_bb_write(sc, R92C_TXAGC_MCS03_MCS00(chain),
SM(R92C_TXAGC_MCS00, power[12]) |
SM(R92C_TXAGC_MCS01, power[13]) |
SM(R92C_TXAGC_MCS02, power[14]) |
SM(R92C_TXAGC_MCS03, power[15]));
rtwn_bb_write(sc, R92C_TXAGC_MCS07_MCS04(chain),
SM(R92C_TXAGC_MCS04, power[16]) |
SM(R92C_TXAGC_MCS05, power[17]) |
SM(R92C_TXAGC_MCS06, power[18]) |
SM(R92C_TXAGC_MCS07, power[19]));
rtwn_bb_write(sc, R92C_TXAGC_MCS11_MCS08(chain),
SM(R92C_TXAGC_MCS08, power[20]) |
SM(R92C_TXAGC_MCS09, power[21]) |
SM(R92C_TXAGC_MCS10, power[22]) |
SM(R92C_TXAGC_MCS11, power[23]));
rtwn_bb_write(sc, R92C_TXAGC_MCS15_MCS12(chain),
SM(R92C_TXAGC_MCS12, power[24]) |
SM(R92C_TXAGC_MCS13, power[25]) |
SM(R92C_TXAGC_MCS14, power[26]) |
SM(R92C_TXAGC_MCS15, power[27]));
}
static void
rtwn_get_txpower(struct rtwn_softc *sc, int chain,
struct ieee80211_channel *c, struct ieee80211_channel *extc,
uint16_t power[RTWN_RIDX_COUNT])
{
struct ieee80211com *ic = &sc->sc_ic;
struct r92c_rom *rom = &sc->rom;
uint16_t cckpow, ofdmpow, htpow, diff, max;
const struct rtwn_txpwr *base;
int ridx, chan, group;
/* Determine channel group. */
chan = ieee80211_chan2ieee(ic, c); /* XXX center freq! */
if (chan <= 3)
group = 0;
else if (chan <= 9)
group = 1;
else
group = 2;
/* Get original Tx power based on board type and RF chain. */
if (!(sc->chip & RTWN_CHIP_92C)) {
if (sc->board_type == R92C_BOARD_TYPE_HIGHPA)
base = &rtl8188ru_txagc[chain];
else
base = &rtl8192cu_txagc[chain];
} else
base = &rtl8192cu_txagc[chain];
memset(power, 0, RTWN_RIDX_COUNT * sizeof(power[0]));
if (sc->regulatory == 0) {
for (ridx = RTWN_RIDX_CCK1; ridx <= RTWN_RIDX_CCK11; ridx++)
power[ridx] = base->pwr[0][ridx];
}
for (ridx = RTWN_RIDX_OFDM6; ridx < RTWN_RIDX_COUNT; ridx++) {
if (sc->regulatory == 3) {
power[ridx] = base->pwr[0][ridx];
/* Apply vendor limits. */
if (extc != NULL)
max = rom->ht40_max_pwr[group];
else
max = rom->ht20_max_pwr[group];
max = (max >> (chain * 4)) & 0xf;
if (power[ridx] > max)
power[ridx] = max;
} else if (sc->regulatory == 1) {
if (extc == NULL)
power[ridx] = base->pwr[group][ridx];
} else if (sc->regulatory != 2)
power[ridx] = base->pwr[0][ridx];
}
/* Compute per-CCK rate Tx power. */
cckpow = rom->cck_tx_pwr[chain][group];
for (ridx = RTWN_RIDX_CCK1; ridx <= RTWN_RIDX_CCK11; ridx++) {
power[ridx] += cckpow;
if (power[ridx] > R92C_MAX_TX_PWR)
power[ridx] = R92C_MAX_TX_PWR;
}
htpow = rom->ht40_1s_tx_pwr[chain][group];
if (sc->ntxchains > 1) {
/* Apply reduction for 2 spatial streams. */
diff = rom->ht40_2s_tx_pwr_diff[group];
diff = (diff >> (chain * 4)) & 0xf;
htpow = (htpow > diff) ? htpow - diff : 0;
}
/* Compute per-OFDM rate Tx power. */
diff = rom->ofdm_tx_pwr_diff[group];
diff = (diff >> (chain * 4)) & 0xf;
ofdmpow = htpow + diff; /* HT->OFDM correction. */
for (ridx = RTWN_RIDX_OFDM6; ridx <= RTWN_RIDX_OFDM54; ridx++) {
power[ridx] += ofdmpow;
if (power[ridx] > R92C_MAX_TX_PWR)
power[ridx] = R92C_MAX_TX_PWR;
}
/* Compute per-MCS Tx power. */
if (extc == NULL) {
diff = rom->ht20_tx_pwr_diff[group];
diff = (diff >> (chain * 4)) & 0xf;
htpow += diff; /* HT40->HT20 correction. */
}
for (ridx = RTWN_RIDX_MCS0; ridx <= RTWN_RIDX_MCS15; ridx++) {
power[ridx] += htpow;
if (power[ridx] > R92C_MAX_TX_PWR)
power[ridx] = R92C_MAX_TX_PWR;
}
#ifdef RTWN_DEBUG
if (sc->sc_debug >= 4) {
/* Dump per-rate Tx power values. */
printf("Tx power for chain %d:\n", chain);
for (ridx = RTWN_RIDX_CCK1; ridx < RTWN_RIDX_COUNT; ridx++)
printf("Rate %d = %u\n", ridx, power[ridx]);
}
#endif
}
static void
rtwn_set_txpower(struct rtwn_softc *sc, struct ieee80211_channel *c,
struct ieee80211_channel *extc)
{
uint16_t power[RTWN_RIDX_COUNT];
int i;
for (i = 0; i < sc->ntxchains; i++) {
/* Compute per-rate Tx power values. */
rtwn_get_txpower(sc, i, c, extc, power);
/* Write per-rate Tx power values to hardware. */
rtwn_write_txpower(sc, i, power);
}
}
static void
rtwn_set_rx_bssid_all(struct rtwn_softc *sc, int enable)
{
uint32_t reg;
reg = rtwn_read_4(sc, R92C_RCR);
if (enable)
reg &= ~R92C_RCR_CBSSID_BCN;
else
reg |= R92C_RCR_CBSSID_BCN;
rtwn_write_4(sc, R92C_RCR, reg);
}
static void
rtwn_set_gain(struct rtwn_softc *sc, uint8_t gain)
{
uint32_t reg;
reg = rtwn_bb_read(sc, R92C_OFDM0_AGCCORE1(0));
reg = RW(reg, R92C_OFDM0_AGCCORE1_GAIN, gain);
rtwn_bb_write(sc, R92C_OFDM0_AGCCORE1(0), reg);
reg = rtwn_bb_read(sc, R92C_OFDM0_AGCCORE1(1));
reg = RW(reg, R92C_OFDM0_AGCCORE1_GAIN, gain);
rtwn_bb_write(sc, R92C_OFDM0_AGCCORE1(1), reg);
}
static void
rtwn_scan_start(struct ieee80211com *ic)
{
struct rtwn_softc *sc = ic->ic_softc;
RTWN_LOCK(sc);
/* Receive beacons / probe responses from any BSSID. */
rtwn_set_rx_bssid_all(sc, 1);
/* Set gain for scanning. */
rtwn_set_gain(sc, 0x20);
RTWN_UNLOCK(sc);
}
static void
rtwn_scan_end(struct ieee80211com *ic)
{
struct rtwn_softc *sc = ic->ic_softc;
RTWN_LOCK(sc);
/* Restore limitations. */
rtwn_set_rx_bssid_all(sc, 0);
/* Set gain under link. */
rtwn_set_gain(sc, 0x32);
RTWN_UNLOCK(sc);
}
static void
rtwn_getradiocaps(struct ieee80211com *ic,
int maxchans, int *nchans, struct ieee80211_channel chans[])
{
uint8_t bands[IEEE80211_MODE_BYTES];
memset(bands, 0, sizeof(bands));
setbit(bands, IEEE80211_MODE_11B);
setbit(bands, IEEE80211_MODE_11G);
ieee80211_add_channel_list_2ghz(chans, maxchans, nchans,
rtwn_chan_2ghz, nitems(rtwn_chan_2ghz), bands, 0);
}
static void
rtwn_set_channel(struct ieee80211com *ic)
{
struct rtwn_softc *sc = ic->ic_softc;
struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
RTWN_LOCK(sc);
if (vap->iv_state == IEEE80211_S_SCAN) {
/* Make link LED blink during scan. */
rtwn_set_led(sc, RTWN_LED_LINK, !sc->ledlink);
}
rtwn_set_chan(sc, ic->ic_curchan, NULL);
RTWN_UNLOCK(sc);
}
static void
rtwn_update_mcast(struct ieee80211com *ic)
{
/* XXX do nothing? */
}
static void
rtwn_set_chan(struct rtwn_softc *sc, struct ieee80211_channel *c,
struct ieee80211_channel *extc)
{
struct ieee80211com *ic = &sc->sc_ic;
u_int chan;
int i;
chan = ieee80211_chan2ieee(ic, c); /* XXX center freq! */
if (chan == 0 || chan == IEEE80211_CHAN_ANY) {
device_printf(sc->sc_dev,
"%s: invalid channel %x\n", __func__, chan);
return;
}
/* Set Tx power for this new channel. */
rtwn_set_txpower(sc, c, extc);
for (i = 0; i < sc->nrxchains; i++) {
rtwn_rf_write(sc, i, R92C_RF_CHNLBW,
RW(sc->rf_chnlbw[i], R92C_RF_CHNLBW_CHNL, chan));
}
#ifndef IEEE80211_NO_HT
if (extc != NULL) {
uint32_t reg;
/* Is secondary channel below or above primary? */
int prichlo = c->ic_freq < extc->ic_freq;
rtwn_write_1(sc, R92C_BWOPMODE,
rtwn_read_1(sc, R92C_BWOPMODE) & ~R92C_BWOPMODE_20MHZ);
reg = rtwn_read_1(sc, R92C_RRSR + 2);
reg = (reg & ~0x6f) | (prichlo ? 1 : 2) << 5;
rtwn_write_1(sc, R92C_RRSR + 2, reg);
rtwn_bb_write(sc, R92C_FPGA0_RFMOD,
rtwn_bb_read(sc, R92C_FPGA0_RFMOD) | R92C_RFMOD_40MHZ);
rtwn_bb_write(sc, R92C_FPGA1_RFMOD,
rtwn_bb_read(sc, R92C_FPGA1_RFMOD) | R92C_RFMOD_40MHZ);
/* Set CCK side band. */
reg = rtwn_bb_read(sc, R92C_CCK0_SYSTEM);
reg = (reg & ~0x00000010) | (prichlo ? 0 : 1) << 4;
rtwn_bb_write(sc, R92C_CCK0_SYSTEM, reg);
reg = rtwn_bb_read(sc, R92C_OFDM1_LSTF);
reg = (reg & ~0x00000c00) | (prichlo ? 1 : 2) << 10;
rtwn_bb_write(sc, R92C_OFDM1_LSTF, reg);
rtwn_bb_write(sc, R92C_FPGA0_ANAPARAM2,
rtwn_bb_read(sc, R92C_FPGA0_ANAPARAM2) &
~R92C_FPGA0_ANAPARAM2_CBW20);
reg = rtwn_bb_read(sc, 0x818);
reg = (reg & ~0x0c000000) | (prichlo ? 2 : 1) << 26;
rtwn_bb_write(sc, 0x818, reg);
/* Select 40MHz bandwidth. */
rtwn_rf_write(sc, 0, R92C_RF_CHNLBW,
(sc->rf_chnlbw[0] & ~0xfff) | chan);
} else
#endif
{
rtwn_write_1(sc, R92C_BWOPMODE,
rtwn_read_1(sc, R92C_BWOPMODE) | R92C_BWOPMODE_20MHZ);
rtwn_bb_write(sc, R92C_FPGA0_RFMOD,
rtwn_bb_read(sc, R92C_FPGA0_RFMOD) & ~R92C_RFMOD_40MHZ);
rtwn_bb_write(sc, R92C_FPGA1_RFMOD,
rtwn_bb_read(sc, R92C_FPGA1_RFMOD) & ~R92C_RFMOD_40MHZ);
rtwn_bb_write(sc, R92C_FPGA0_ANAPARAM2,
rtwn_bb_read(sc, R92C_FPGA0_ANAPARAM2) |
R92C_FPGA0_ANAPARAM2_CBW20);
/* Select 20MHz bandwidth. */
rtwn_rf_write(sc, 0, R92C_RF_CHNLBW,
(sc->rf_chnlbw[0] & ~0xfff) | R92C_RF_CHNLBW_BW20 | chan);
}
}
static int
rtwn_iq_calib_chain(struct rtwn_softc *sc, int chain, uint16_t tx[2],
uint16_t rx[2])
{
uint32_t status;
int offset = chain * 0x20;
if (chain == 0) { /* IQ calibration for chain 0. */
/* IQ calibration settings for chain 0. */
rtwn_bb_write(sc, 0xe30, 0x10008c1f);
rtwn_bb_write(sc, 0xe34, 0x10008c1f);
rtwn_bb_write(sc, 0xe38, 0x82140102);
if (sc->ntxchains > 1) {
rtwn_bb_write(sc, 0xe3c, 0x28160202); /* 2T */
/* IQ calibration settings for chain 1. */
rtwn_bb_write(sc, 0xe50, 0x10008c22);
rtwn_bb_write(sc, 0xe54, 0x10008c22);
rtwn_bb_write(sc, 0xe58, 0x82140102);
rtwn_bb_write(sc, 0xe5c, 0x28160202);
} else
rtwn_bb_write(sc, 0xe3c, 0x28160502); /* 1T */
/* LO calibration settings. */
rtwn_bb_write(sc, 0xe4c, 0x001028d1);
/* We're doing LO and IQ calibration in one shot. */
rtwn_bb_write(sc, 0xe48, 0xf9000000);
rtwn_bb_write(sc, 0xe48, 0xf8000000);
} else { /* IQ calibration for chain 1. */
/* We're doing LO and IQ calibration in one shot. */
rtwn_bb_write(sc, 0xe60, 0x00000002);
rtwn_bb_write(sc, 0xe60, 0x00000000);
}
/* Give LO and IQ calibrations the time to complete. */
DELAY(1000);
/* Read IQ calibration status. */
status = rtwn_bb_read(sc, 0xeac);
if (status & (1 << (28 + chain * 3)))
return (0); /* Tx failed. */
/* Read Tx IQ calibration results. */
tx[0] = (rtwn_bb_read(sc, 0xe94 + offset) >> 16) & 0x3ff;
tx[1] = (rtwn_bb_read(sc, 0xe9c + offset) >> 16) & 0x3ff;
if (tx[0] == 0x142 || tx[1] == 0x042)
return (0); /* Tx failed. */
if (status & (1 << (27 + chain * 3)))
return (1); /* Rx failed. */
/* Read Rx IQ calibration results. */
rx[0] = (rtwn_bb_read(sc, 0xea4 + offset) >> 16) & 0x3ff;
rx[1] = (rtwn_bb_read(sc, 0xeac + offset) >> 16) & 0x3ff;
if (rx[0] == 0x132 || rx[1] == 0x036)
return (1); /* Rx failed. */
return (3); /* Both Tx and Rx succeeded. */
}
static void
rtwn_iq_calib_run(struct rtwn_softc *sc, int n, uint16_t tx[2][2],
uint16_t rx[2][2])
{
/* Registers to save and restore during IQ calibration. */
struct iq_cal_regs {
uint32_t adda[16];
uint8_t txpause;
uint8_t bcn_ctrl;
uint8_t ustime_tsf;
uint32_t gpio_muxcfg;
uint32_t ofdm0_trxpathena;
uint32_t ofdm0_trmuxpar;
uint32_t fpga0_rfifacesw1;
} iq_cal_regs;
static const uint16_t reg_adda[16] = {
0x85c, 0xe6c, 0xe70, 0xe74,
0xe78, 0xe7c, 0xe80, 0xe84,
0xe88, 0xe8c, 0xed0, 0xed4,
0xed8, 0xedc, 0xee0, 0xeec
};
int i, chain;
uint32_t hssi_param1;
if (n == 0) {
for (i = 0; i < nitems(reg_adda); i++)
iq_cal_regs.adda[i] = rtwn_bb_read(sc, reg_adda[i]);
iq_cal_regs.txpause = rtwn_read_1(sc, R92C_TXPAUSE);
iq_cal_regs.bcn_ctrl = rtwn_read_1(sc, R92C_BCN_CTRL);
iq_cal_regs.ustime_tsf = rtwn_read_1(sc, R92C_USTIME_TSF);
iq_cal_regs.gpio_muxcfg = rtwn_read_4(sc, R92C_GPIO_MUXCFG);
}
if (sc->ntxchains == 1) {
rtwn_bb_write(sc, reg_adda[0], 0x0b1b25a0);
for (i = 1; i < nitems(reg_adda); i++)
rtwn_bb_write(sc, reg_adda[i], 0x0bdb25a0);
} else {
for (i = 0; i < nitems(reg_adda); i++)
rtwn_bb_write(sc, reg_adda[i], 0x04db25a4);
}
hssi_param1 = rtwn_bb_read(sc, R92C_HSSI_PARAM1(0));
if (!(hssi_param1 & R92C_HSSI_PARAM1_PI)) {
rtwn_bb_write(sc, R92C_HSSI_PARAM1(0),
hssi_param1 | R92C_HSSI_PARAM1_PI);
rtwn_bb_write(sc, R92C_HSSI_PARAM1(1),
hssi_param1 | R92C_HSSI_PARAM1_PI);
}
if (n == 0) {
iq_cal_regs.ofdm0_trxpathena =
rtwn_bb_read(sc, R92C_OFDM0_TRXPATHENA);
iq_cal_regs.ofdm0_trmuxpar =
rtwn_bb_read(sc, R92C_OFDM0_TRMUXPAR);
iq_cal_regs.fpga0_rfifacesw1 =
rtwn_bb_read(sc, R92C_FPGA0_RFIFACESW(1));
}
rtwn_bb_write(sc, R92C_OFDM0_TRXPATHENA, 0x03a05600);
rtwn_bb_write(sc, R92C_OFDM0_TRMUXPAR, 0x000800e4);
rtwn_bb_write(sc, R92C_FPGA0_RFIFACESW(1), 0x22204000);
if (sc->ntxchains > 1) {
rtwn_bb_write(sc, R92C_LSSI_PARAM(0), 0x00010000);
rtwn_bb_write(sc, R92C_LSSI_PARAM(1), 0x00010000);
}
rtwn_write_1(sc, R92C_TXPAUSE, 0x3f);
rtwn_write_1(sc, R92C_BCN_CTRL, iq_cal_regs.bcn_ctrl & ~(0x08));
rtwn_write_1(sc, R92C_USTIME_TSF, iq_cal_regs.ustime_tsf & ~(0x08));
rtwn_write_1(sc, R92C_GPIO_MUXCFG,
iq_cal_regs.gpio_muxcfg & ~(0x20));
rtwn_bb_write(sc, 0x0b68, 0x00080000);
if (sc->ntxchains > 1)
rtwn_bb_write(sc, 0x0b6c, 0x00080000);
rtwn_bb_write(sc, 0x0e28, 0x80800000);
rtwn_bb_write(sc, 0x0e40, 0x01007c00);
rtwn_bb_write(sc, 0x0e44, 0x01004800);
rtwn_bb_write(sc, 0x0b68, 0x00080000);
for (chain = 0; chain < sc->ntxchains; chain++) {
if (chain > 0) {
/* Put chain 0 on standby. */
rtwn_bb_write(sc, 0x0e28, 0x00);
rtwn_bb_write(sc, R92C_LSSI_PARAM(0), 0x00010000);
rtwn_bb_write(sc, 0x0e28, 0x80800000);
/* Enable chain 1. */
for (i = 0; i < nitems(reg_adda); i++)
rtwn_bb_write(sc, reg_adda[i], 0x0b1b25a4);
}
/* Run IQ calibration twice. */
for (i = 0; i < 2; i++) {
int ret;
ret = rtwn_iq_calib_chain(sc, chain,
tx[chain], rx[chain]);
if (ret == 0) {
DPRINTF(("%s: chain %d: Tx failed.\n",
__func__, chain));
tx[chain][0] = 0xff;
tx[chain][1] = 0xff;
rx[chain][0] = 0xff;
rx[chain][1] = 0xff;
} else if (ret == 1) {
DPRINTF(("%s: chain %d: Rx failed.\n",
__func__, chain));
rx[chain][0] = 0xff;
rx[chain][1] = 0xff;
} else if (ret == 3) {
DPRINTF(("%s: chain %d: Both Tx and Rx "
"succeeded.\n", __func__, chain));
}
}
DPRINTF(("%s: results for run %d chain %d: tx[0]=0x%x, "
"tx[1]=0x%x rx[0]=0x%x rx[1]=0x%x\n", __func__, n, chain,
tx[chain][0], tx[chain][1], rx[chain][0], rx[chain][1]));
}
rtwn_bb_write(sc, R92C_OFDM0_TRXPATHENA,
iq_cal_regs.ofdm0_trxpathena);
rtwn_bb_write(sc, R92C_FPGA0_RFIFACESW(1),
iq_cal_regs.fpga0_rfifacesw1);
rtwn_bb_write(sc, R92C_OFDM0_TRMUXPAR, iq_cal_regs.ofdm0_trmuxpar);
rtwn_bb_write(sc, 0x0e28, 0x00);
rtwn_bb_write(sc, R92C_LSSI_PARAM(0), 0x00032ed3);
if (sc->ntxchains > 1)
rtwn_bb_write(sc, R92C_LSSI_PARAM(1), 0x00032ed3);
if (n != 0) {
if (!(hssi_param1 & R92C_HSSI_PARAM1_PI)) {
rtwn_bb_write(sc, R92C_HSSI_PARAM1(0), hssi_param1);
rtwn_bb_write(sc, R92C_HSSI_PARAM1(1), hssi_param1);
}
for (i = 0; i < nitems(reg_adda); i++)
rtwn_bb_write(sc, reg_adda[i], iq_cal_regs.adda[i]);
rtwn_write_1(sc, R92C_TXPAUSE, iq_cal_regs.txpause);
rtwn_write_1(sc, R92C_BCN_CTRL, iq_cal_regs.bcn_ctrl);
rtwn_write_1(sc, R92C_USTIME_TSF, iq_cal_regs.ustime_tsf);
rtwn_write_4(sc, R92C_GPIO_MUXCFG, iq_cal_regs.gpio_muxcfg);
}
}
#define RTWN_IQ_CAL_MAX_TOLERANCE 5
static int
rtwn_iq_calib_compare_results(uint16_t tx1[2][2], uint16_t rx1[2][2],
uint16_t tx2[2][2], uint16_t rx2[2][2], int ntxchains)
{
int chain, i, tx_ok[2], rx_ok[2];
tx_ok[0] = tx_ok[1] = rx_ok[0] = rx_ok[1] = 0;
for (chain = 0; chain < ntxchains; chain++) {
for (i = 0; i < 2; i++) {
if (tx1[chain][i] == 0xff || tx2[chain][i] == 0xff ||
rx1[chain][i] == 0xff || rx2[chain][i] == 0xff)
continue;
tx_ok[chain] = (abs(tx1[chain][i] - tx2[chain][i]) <=
RTWN_IQ_CAL_MAX_TOLERANCE);
rx_ok[chain] = (abs(rx1[chain][i] - rx2[chain][i]) <=
RTWN_IQ_CAL_MAX_TOLERANCE);
}
}
if (ntxchains > 1)
return (tx_ok[0] && tx_ok[1] && rx_ok[0] && rx_ok[1]);
else
return (tx_ok[0] && rx_ok[0]);
}
#undef RTWN_IQ_CAL_MAX_TOLERANCE
static void
rtwn_iq_calib_write_results(struct rtwn_softc *sc, uint16_t tx[2],
uint16_t rx[2], int chain)
{
uint32_t reg, val, x;
long y, tx_c;
if (tx[0] == 0xff || tx[1] == 0xff)
return;
reg = rtwn_bb_read(sc, R92C_OFDM0_TXIQIMBALANCE(chain));
val = ((reg >> 22) & 0x3ff);
x = tx[0];
if (x & 0x0200)
x |= 0xfc00;
reg = (((x * val) >> 8) & 0x3ff);
rtwn_bb_write(sc, R92C_OFDM0_TXIQIMBALANCE(chain), reg);
reg = rtwn_bb_read(sc, R92C_OFDM0_ECCATHRESHOLD);
if (((x * val) >> 7) & 0x01)
reg |= 0x80000000;
else
reg &= ~0x80000000;
rtwn_bb_write(sc, R92C_OFDM0_ECCATHRESHOLD, reg);
y = tx[1];
if (y & 0x00000200)
y |= 0xfffffc00;
tx_c = (y * val) >> 8;
reg = rtwn_bb_read(sc, R92C_OFDM0_TXAFE(chain));
reg |= ((((tx_c & 0x3c0) >> 6) << 24) & 0xf0000000);
rtwn_bb_write(sc, R92C_OFDM0_TXAFE(chain), reg);
reg = rtwn_bb_read(sc, R92C_OFDM0_TXIQIMBALANCE(chain));
reg |= (((tx_c & 0x3f) << 16) & 0x003F0000);
rtwn_bb_write(sc, R92C_OFDM0_TXIQIMBALANCE(chain), reg);
reg = rtwn_bb_read(sc, R92C_OFDM0_ECCATHRESHOLD);
if (((y * val) >> 7) & 0x01)
reg |= 0x20000000;
else
reg &= ~0x20000000;
rtwn_bb_write(sc, R92C_OFDM0_ECCATHRESHOLD, reg);
if (rx[0] == 0xff || rx[1] == 0xff)
return;
reg = rtwn_bb_read(sc, R92C_OFDM0_RXIQIMBALANCE(chain));
reg |= (rx[0] & 0x3ff);
rtwn_bb_write(sc, R92C_OFDM0_RXIQIMBALANCE(chain), reg);
reg |= (((rx[1] & 0x03f) << 8) & 0xFC00);
rtwn_bb_write(sc, R92C_OFDM0_RXIQIMBALANCE(chain), reg);
if (chain == 0) {
reg = rtwn_bb_read(sc, R92C_OFDM0_RXIQEXTANTA);
reg |= (((rx[1] & 0xf) >> 6) & 0x000f);
rtwn_bb_write(sc, R92C_OFDM0_RXIQEXTANTA, reg);
} else {
reg = rtwn_bb_read(sc, R92C_OFDM0_AGCRSSITABLE);
reg |= ((((rx[1] & 0xf) >> 6) << 12) & 0xf000);
rtwn_bb_write(sc, R92C_OFDM0_AGCRSSITABLE, reg);
}
}
#define RTWN_IQ_CAL_NRUN 3
static void
rtwn_iq_calib(struct rtwn_softc *sc)
{
uint16_t tx[RTWN_IQ_CAL_NRUN][2][2], rx[RTWN_IQ_CAL_NRUN][2][2];
int n, valid;
valid = 0;
for (n = 0; n < RTWN_IQ_CAL_NRUN; n++) {
rtwn_iq_calib_run(sc, n, tx[n], rx[n]);
if (n == 0)
continue;
/* Valid results remain stable after consecutive runs. */
valid = rtwn_iq_calib_compare_results(tx[n - 1], rx[n - 1],
tx[n], rx[n], sc->ntxchains);
if (valid)
break;
}
if (valid) {
rtwn_iq_calib_write_results(sc, tx[n][0], rx[n][0], 0);
if (sc->ntxchains > 1)
rtwn_iq_calib_write_results(sc, tx[n][1], rx[n][1], 1);
}
}
#undef RTWN_IQ_CAL_NRUN
static void
rtwn_lc_calib(struct rtwn_softc *sc)
{
uint32_t rf_ac[2];
uint8_t txmode;
int i;
txmode = rtwn_read_1(sc, R92C_OFDM1_LSTF + 3);
if ((txmode & 0x70) != 0) {
/* Disable all continuous Tx. */
rtwn_write_1(sc, R92C_OFDM1_LSTF + 3, txmode & ~0x70);
/* Set RF mode to standby mode. */
for (i = 0; i < sc->nrxchains; i++) {
rf_ac[i] = rtwn_rf_read(sc, i, R92C_RF_AC);
rtwn_rf_write(sc, i, R92C_RF_AC,
RW(rf_ac[i], R92C_RF_AC_MODE,
R92C_RF_AC_MODE_STANDBY));
}
} else {
/* Block all Tx queues. */
rtwn_write_1(sc, R92C_TXPAUSE, 0xff);
}
/* Start calibration. */
rtwn_rf_write(sc, 0, R92C_RF_CHNLBW,
rtwn_rf_read(sc, 0, R92C_RF_CHNLBW) | R92C_RF_CHNLBW_LCSTART);
/* Give calibration the time to complete. */
DELAY(100);
/* Restore configuration. */
if ((txmode & 0x70) != 0) {
/* Restore Tx mode. */
rtwn_write_1(sc, R92C_OFDM1_LSTF + 3, txmode);
/* Restore RF mode. */
for (i = 0; i < sc->nrxchains; i++)
rtwn_rf_write(sc, i, R92C_RF_AC, rf_ac[i]);
} else {
/* Unblock all Tx queues. */
rtwn_write_1(sc, R92C_TXPAUSE, 0x00);
}
}
static void
rtwn_temp_calib(struct rtwn_softc *sc)
{
int temp;
if (sc->thcal_state == 0) {
/* Start measuring temperature. */
rtwn_rf_write(sc, 0, R92C_RF_T_METER, 0x60);
sc->thcal_state = 1;
return;
}
sc->thcal_state = 0;
/* Read measured temperature. */
temp = rtwn_rf_read(sc, 0, R92C_RF_T_METER) & 0x1f;
if (temp == 0) /* Read failed, skip. */
return;
DPRINTFN(2, ("temperature=%d\n", temp));
/*
* Redo IQ and LC calibration if temperature changed significantly
* since last calibration.
*/
if (sc->thcal_lctemp == 0) {
/* First calibration is performed in rtwn_init(). */
sc->thcal_lctemp = temp;
} else if (abs(temp - sc->thcal_lctemp) > 1) {
DPRINTF(("IQ/LC calib triggered by temp: %d -> %d\n",
sc->thcal_lctemp, temp));
rtwn_iq_calib(sc);
rtwn_lc_calib(sc);
/* Record temperature of last calibration. */
sc->thcal_lctemp = temp;
}
}
static int
rtwn_init(struct rtwn_softc *sc)
{
struct ieee80211com *ic = &sc->sc_ic;
struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
uint32_t reg;
uint8_t macaddr[IEEE80211_ADDR_LEN];
int i, error;
RTWN_LOCK(sc);
if (sc->sc_flags & RTWN_RUNNING) {
RTWN_UNLOCK(sc);
return 0;
}
sc->sc_flags |= RTWN_RUNNING;
/* Init firmware commands ring. */
sc->fwcur = 0;
/* Power on adapter. */
error = rtwn_power_on(sc);
if (error != 0) {
device_printf(sc->sc_dev, "could not power on adapter\n");
goto fail;
}
/* Initialize DMA. */
error = rtwn_dma_init(sc);
if (error != 0) {
device_printf(sc->sc_dev, "could not initialize DMA\n");
goto fail;
}
/* Set info size in Rx descriptors (in 64-bit words). */
rtwn_write_1(sc, R92C_RX_DRVINFO_SZ, 4);
/* Disable interrupts. */
rtwn_write_4(sc, R92C_HISR, 0x00000000);
rtwn_write_4(sc, R92C_HIMR, 0x00000000);
/* Set MAC address. */
IEEE80211_ADDR_COPY(macaddr, vap ? vap->iv_myaddr : ic->ic_macaddr);
for (i = 0; i < IEEE80211_ADDR_LEN; i++)
rtwn_write_1(sc, R92C_MACID + i, macaddr[i]);
/* Set initial network type. */
reg = rtwn_read_4(sc, R92C_CR);
reg = RW(reg, R92C_CR_NETTYPE, R92C_CR_NETTYPE_INFRA);
rtwn_write_4(sc, R92C_CR, reg);
rtwn_rxfilter_init(sc);
reg = rtwn_read_4(sc, R92C_RRSR);
reg = RW(reg, R92C_RRSR_RATE_BITMAP, R92C_RRSR_RATE_ALL);
rtwn_write_4(sc, R92C_RRSR, reg);
/* Set short/long retry limits. */
rtwn_write_2(sc, R92C_RL,
SM(R92C_RL_SRL, 0x07) | SM(R92C_RL_LRL, 0x07));
/* Initialize EDCA parameters. */
rtwn_edca_init(sc);
/* Set data and response automatic rate fallback retry counts. */
rtwn_write_4(sc, R92C_DARFRC + 0, 0x01000000);
rtwn_write_4(sc, R92C_DARFRC + 4, 0x07060504);
rtwn_write_4(sc, R92C_RARFRC + 0, 0x01000000);
rtwn_write_4(sc, R92C_RARFRC + 4, 0x07060504);
rtwn_write_2(sc, R92C_FWHW_TXQ_CTRL, 0x1f80);
/* Set ACK timeout. */
rtwn_write_1(sc, R92C_ACKTO, 0x40);
/* Initialize beacon parameters. */
rtwn_write_2(sc, R92C_TBTT_PROHIBIT, 0x6404);
rtwn_write_1(sc, R92C_DRVERLYINT, 0x05);
rtwn_write_1(sc, R92C_BCNDMATIM, 0x02);
rtwn_write_2(sc, R92C_BCNTCFG, 0x660f);
/* Setup AMPDU aggregation. */
rtwn_write_4(sc, R92C_AGGLEN_LMT, 0x99997631); /* MCS7~0 */
rtwn_write_1(sc, R92C_AGGR_BREAK_TIME, 0x16);
rtwn_write_1(sc, R92C_BCN_MAX_ERR, 0xff);
rtwn_write_1(sc, R92C_BCN_CTRL, R92C_BCN_CTRL_DIS_TSF_UDT0);
rtwn_write_4(sc, R92C_PIFS, 0x1c);
rtwn_write_4(sc, R92C_MCUTST_1, 0x0);
/* Load 8051 microcode. */
error = rtwn_load_firmware(sc);
if (error != 0)
goto fail;
/* Initialize MAC/BB/RF blocks. */
rtwn_mac_init(sc);
rtwn_bb_init(sc);
rtwn_rf_init(sc);
/* Turn CCK and OFDM blocks on. */
reg = rtwn_bb_read(sc, R92C_FPGA0_RFMOD);
reg |= R92C_RFMOD_CCK_EN;
rtwn_bb_write(sc, R92C_FPGA0_RFMOD, reg);
reg = rtwn_bb_read(sc, R92C_FPGA0_RFMOD);
reg |= R92C_RFMOD_OFDM_EN;
rtwn_bb_write(sc, R92C_FPGA0_RFMOD, reg);
/* Clear per-station keys table. */
rtwn_cam_init(sc);
/* Enable hardware sequence numbering. */
rtwn_write_1(sc, R92C_HWSEQ_CTRL, 0xff);
/* Perform LO and IQ calibrations. */
rtwn_iq_calib(sc);
/* Perform LC calibration. */
rtwn_lc_calib(sc);
rtwn_pa_bias_init(sc);
/* Initialize GPIO setting. */
rtwn_write_1(sc, R92C_GPIO_MUXCFG,
rtwn_read_1(sc, R92C_GPIO_MUXCFG) & ~R92C_GPIO_MUXCFG_ENBT);
/* Fix for lower temperature. */
rtwn_write_1(sc, 0x15, 0xe9);
/* CLear pending interrupts. */
rtwn_write_4(sc, R92C_HISR, 0xffffffff);
/* Enable interrupts. */
rtwn_write_4(sc, R92C_HIMR, RTWN_INT_ENABLE);
callout_reset(&sc->watchdog_to, hz, rtwn_watchdog, sc);
fail:
if (error != 0)
rtwn_stop_locked(sc);
RTWN_UNLOCK(sc);
return error;
}
static void
rtwn_stop_locked(struct rtwn_softc *sc)
{
uint16_t reg;
int i;
RTWN_LOCK_ASSERT(sc);
if (!(sc->sc_flags & RTWN_RUNNING))
return;
sc->sc_tx_timer = 0;
callout_stop(&sc->watchdog_to);
callout_stop(&sc->calib_to);
sc->sc_flags &= ~RTWN_RUNNING;
/* Disable interrupts. */
rtwn_write_4(sc, R92C_HISR, 0x00000000);
rtwn_write_4(sc, R92C_HIMR, 0x00000000);
/* Stop hardware. */
rtwn_write_1(sc, R92C_TXPAUSE, 0xff);
rtwn_write_1(sc, R92C_RF_CTRL, 0x00);
reg = rtwn_read_1(sc, R92C_SYS_FUNC_EN);
reg |= R92C_SYS_FUNC_EN_BB_GLB_RST;
rtwn_write_1(sc, R92C_SYS_FUNC_EN, reg);
reg &= ~R92C_SYS_FUNC_EN_BB_GLB_RST;
rtwn_write_1(sc, R92C_SYS_FUNC_EN, reg);
reg = rtwn_read_2(sc, R92C_CR);
reg &= ~(R92C_CR_HCI_TXDMA_EN | R92C_CR_HCI_RXDMA_EN |
R92C_CR_TXDMA_EN | R92C_CR_RXDMA_EN | R92C_CR_PROTOCOL_EN |
R92C_CR_SCHEDULE_EN | R92C_CR_MACTXEN | R92C_CR_MACRXEN |
R92C_CR_ENSEC);
rtwn_write_2(sc, R92C_CR, reg);
if (rtwn_read_1(sc, R92C_MCUFWDL) & R92C_MCUFWDL_RAM_DL_SEL)
rtwn_fw_reset(sc);
/* TODO: linux does additional btcoex stuff here */
rtwn_write_2(sc, R92C_AFE_PLL_CTRL, 0x80); /* linux magic number */
rtwn_write_1(sc, R92C_SPS0_CTRL, 0x23); /* ditto */
rtwn_write_1(sc, R92C_AFE_XTAL_CTRL, 0x0e); /* different with btcoex */
rtwn_write_1(sc, R92C_RSV_CTRL, 0x0e);
rtwn_write_1(sc, R92C_APS_FSMCO, R92C_APS_FSMCO_PDN_EN);
for (i = 0; i < RTWN_NTXQUEUES; i++)
rtwn_reset_tx_list(sc, i);
rtwn_reset_rx_list(sc);
}
static void
rtwn_stop(struct rtwn_softc *sc)
{
RTWN_LOCK(sc);
rtwn_stop_locked(sc);
RTWN_UNLOCK(sc);
}
static void
rtwn_intr(void *arg)
{
struct rtwn_softc *sc = arg;
uint32_t status;
int i;
RTWN_LOCK(sc);
status = rtwn_read_4(sc, R92C_HISR);
if (status == 0 || status == 0xffffffff) {
RTWN_UNLOCK(sc);
return;
}
/* Disable interrupts. */
rtwn_write_4(sc, R92C_HIMR, 0x00000000);
/* Ack interrupts. */
rtwn_write_4(sc, R92C_HISR, status);
/* Vendor driver treats RX errors like ROK... */
if (status & (R92C_IMR_ROK | R92C_IMR_RXFOVW | R92C_IMR_RDU)) {
bus_dmamap_sync(sc->rx_ring.desc_dmat, sc->rx_ring.desc_map,
BUS_DMASYNC_POSTREAD);
for (i = 0; i < RTWN_RX_LIST_COUNT; i++) {
struct r92c_rx_desc *rx_desc = &sc->rx_ring.desc[i];
struct rtwn_rx_data *rx_data = &sc->rx_ring.rx_data[i];
if (le32toh(rx_desc->rxdw0) & R92C_RXDW0_OWN)
continue;
rtwn_rx_frame(sc, rx_desc, rx_data, i);
}
}
if (status & R92C_IMR_BDOK)
rtwn_tx_done(sc, RTWN_BEACON_QUEUE);
if (status & R92C_IMR_HIGHDOK)
rtwn_tx_done(sc, RTWN_HIGH_QUEUE);
if (status & R92C_IMR_MGNTDOK)
rtwn_tx_done(sc, RTWN_MGNT_QUEUE);
if (status & R92C_IMR_BKDOK)
rtwn_tx_done(sc, RTWN_BK_QUEUE);
if (status & R92C_IMR_BEDOK)
rtwn_tx_done(sc, RTWN_BE_QUEUE);
if (status & R92C_IMR_VIDOK)
rtwn_tx_done(sc, RTWN_VI_QUEUE);
if (status & R92C_IMR_VODOK)
rtwn_tx_done(sc, RTWN_VO_QUEUE);
/* Enable interrupts. */
rtwn_write_4(sc, R92C_HIMR, RTWN_INT_ENABLE);
RTWN_UNLOCK(sc);
}
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