3716 lines
99 KiB
C
3716 lines
99 KiB
C
/*-
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* Copyright (c) 2006,2007
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* Damien Bergamini <damien.bergamini@free.fr>
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* Benjamin Close <Benjamin.Close@clearchain.com>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#define VERSION "20071127"
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/*
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* Driver for Intel PRO/Wireless 3945ABG 802.11 network adapters.
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*
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* The 3945ABG network adapter doesn't use traditional hardware as
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* many other adaptors do. Instead at run time the eeprom is set into a known
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* state and told to load boot firmware. The boot firmware loads an init and a
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* main binary firmware image into SRAM on the card via DMA.
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* Once the firmware is loaded, the driver/hw then
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* communicate by way of circular dma rings via the SRAM to the firmware.
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*
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* There is 6 memory rings. 1 command ring, 1 rx data ring & 4 tx data rings.
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* The 4 tx data rings allow for prioritization QoS.
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*
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* The rx data ring consists of 32 dma buffers. Two registers are used to
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* indicate where in the ring the driver and the firmware are up to. The
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* driver sets the initial read index (reg1) and the initial write index (reg2),
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* the firmware updates the read index (reg1) on rx of a packet and fires an
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* interrupt. The driver then processes the buffers starting at reg1 indicating
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* to the firmware which buffers have been accessed by updating reg2. At the
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* same time allocating new memory for the processed buffer.
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*
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* A similar thing happens with the tx rings. The difference is the firmware
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* stop processing buffers once the queue is full and until confirmation
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* of a successful transmition (tx_intr) has occurred.
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*
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* The command ring operates in the same manner as the tx queues.
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*
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* All communication direct to the card (ie eeprom) is classed as Stage1
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* communication
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*
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* All communication via the firmware to the card is classed as State2.
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* The firmware consists of 2 parts. A bootstrap firmware and a runtime
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* firmware. The bootstrap firmware and runtime firmware are loaded
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* from host memory via dma to the card then told to execute. From this point
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* on the majority of communications between the driver and the card goes
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* via the firmware.
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*/
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#include "opt_wlan.h"
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#include <sys/param.h>
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#include <sys/sysctl.h>
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#include <sys/sockio.h>
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#include <sys/mbuf.h>
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#include <sys/kernel.h>
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#include <sys/socket.h>
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#include <sys/systm.h>
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#include <sys/malloc.h>
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#include <sys/queue.h>
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#include <sys/taskqueue.h>
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#include <sys/module.h>
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#include <sys/bus.h>
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#include <sys/endian.h>
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#include <sys/linker.h>
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#include <sys/firmware.h>
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#include <machine/bus.h>
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#include <machine/resource.h>
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#include <sys/rman.h>
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#include <dev/pci/pcireg.h>
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#include <dev/pci/pcivar.h>
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#include <net/bpf.h>
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#include <net/if.h>
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#include <net/if_var.h>
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#include <net/if_arp.h>
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#include <net/ethernet.h>
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#include <net/if_dl.h>
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#include <net/if_media.h>
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#include <net/if_types.h>
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#include <net80211/ieee80211_var.h>
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#include <net80211/ieee80211_radiotap.h>
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#include <net80211/ieee80211_regdomain.h>
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#include <net80211/ieee80211_ratectl.h>
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <netinet/in_var.h>
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#include <netinet/ip.h>
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#include <netinet/if_ether.h>
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#include <dev/wpi/if_wpireg.h>
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#include <dev/wpi/if_wpivar.h>
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#define WPI_DEBUG
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#ifdef WPI_DEBUG
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#define DPRINTF(x) do { if (wpi_debug != 0) printf x; } while (0)
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#define DPRINTFN(n, x) do { if (wpi_debug & n) printf x; } while (0)
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#define WPI_DEBUG_SET (wpi_debug != 0)
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enum {
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WPI_DEBUG_UNUSED = 0x00000001, /* Unused */
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WPI_DEBUG_HW = 0x00000002, /* Stage 1 (eeprom) debugging */
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WPI_DEBUG_TX = 0x00000004, /* Stage 2 TX intrp debugging*/
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WPI_DEBUG_RX = 0x00000008, /* Stage 2 RX intrp debugging */
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WPI_DEBUG_CMD = 0x00000010, /* Stage 2 CMD intrp debugging*/
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WPI_DEBUG_FIRMWARE = 0x00000020, /* firmware(9) loading debug */
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WPI_DEBUG_DMA = 0x00000040, /* DMA (de)allocations/syncs */
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WPI_DEBUG_SCANNING = 0x00000080, /* Stage 2 Scanning debugging */
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WPI_DEBUG_NOTIFY = 0x00000100, /* State 2 Noftif intr debug */
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WPI_DEBUG_TEMP = 0x00000200, /* TXPower/Temp Calibration */
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WPI_DEBUG_OPS = 0x00000400, /* wpi_ops taskq debug */
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WPI_DEBUG_WATCHDOG = 0x00000800, /* Watch dog debug */
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WPI_DEBUG_ANY = 0xffffffff
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};
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static int wpi_debug;
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SYSCTL_INT(_debug, OID_AUTO, wpi, CTLFLAG_RWTUN, &wpi_debug, 0, "wpi debug level");
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#else
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#define DPRINTF(x)
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#define DPRINTFN(n, x)
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#define WPI_DEBUG_SET 0
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#endif
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struct wpi_ident {
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uint16_t vendor;
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uint16_t device;
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uint16_t subdevice;
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const char *name;
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};
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static const struct wpi_ident wpi_ident_table[] = {
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/* The below entries support ABG regardless of the subid */
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{ 0x8086, 0x4222, 0x0, "Intel(R) PRO/Wireless 3945ABG" },
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{ 0x8086, 0x4227, 0x0, "Intel(R) PRO/Wireless 3945ABG" },
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/* The below entries only support BG */
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{ 0x8086, 0x4222, 0x1005, "Intel(R) PRO/Wireless 3945BG" },
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{ 0x8086, 0x4222, 0x1034, "Intel(R) PRO/Wireless 3945BG" },
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{ 0x8086, 0x4227, 0x1014, "Intel(R) PRO/Wireless 3945BG" },
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{ 0x8086, 0x4222, 0x1044, "Intel(R) PRO/Wireless 3945BG" },
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{ 0, 0, 0, NULL }
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};
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static struct ieee80211vap *wpi_vap_create(struct ieee80211com *,
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const char [IFNAMSIZ], int, enum ieee80211_opmode, int,
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const uint8_t [IEEE80211_ADDR_LEN],
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const uint8_t [IEEE80211_ADDR_LEN]);
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static void wpi_vap_delete(struct ieee80211vap *);
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static int wpi_dma_contig_alloc(struct wpi_softc *, struct wpi_dma_info *,
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void **, bus_size_t, bus_size_t, int);
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static void wpi_dma_contig_free(struct wpi_dma_info *);
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static void wpi_dma_map_addr(void *, bus_dma_segment_t *, int, int);
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static int wpi_alloc_shared(struct wpi_softc *);
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static void wpi_free_shared(struct wpi_softc *);
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static int wpi_alloc_rx_ring(struct wpi_softc *, struct wpi_rx_ring *);
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static void wpi_reset_rx_ring(struct wpi_softc *, struct wpi_rx_ring *);
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static void wpi_free_rx_ring(struct wpi_softc *, struct wpi_rx_ring *);
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static int wpi_alloc_tx_ring(struct wpi_softc *, struct wpi_tx_ring *,
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int, int);
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static void wpi_reset_tx_ring(struct wpi_softc *, struct wpi_tx_ring *);
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static void wpi_free_tx_ring(struct wpi_softc *, struct wpi_tx_ring *);
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static int wpi_newstate(struct ieee80211vap *, enum ieee80211_state, int);
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static void wpi_mem_lock(struct wpi_softc *);
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static void wpi_mem_unlock(struct wpi_softc *);
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static uint32_t wpi_mem_read(struct wpi_softc *, uint16_t);
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static void wpi_mem_write(struct wpi_softc *, uint16_t, uint32_t);
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static void wpi_mem_write_region_4(struct wpi_softc *, uint16_t,
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const uint32_t *, int);
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static uint16_t wpi_read_prom_data(struct wpi_softc *, uint32_t, void *, int);
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static int wpi_alloc_fwmem(struct wpi_softc *);
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static void wpi_free_fwmem(struct wpi_softc *);
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static int wpi_load_firmware(struct wpi_softc *);
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static void wpi_unload_firmware(struct wpi_softc *);
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static int wpi_load_microcode(struct wpi_softc *, const uint8_t *, int);
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static void wpi_rx_intr(struct wpi_softc *, struct wpi_rx_desc *,
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struct wpi_rx_data *);
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static void wpi_tx_intr(struct wpi_softc *, struct wpi_rx_desc *);
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static void wpi_cmd_intr(struct wpi_softc *, struct wpi_rx_desc *);
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static void wpi_notif_intr(struct wpi_softc *);
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static void wpi_intr(void *);
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static uint8_t wpi_plcp_signal(int);
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static void wpi_watchdog(void *);
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static int wpi_tx_data(struct wpi_softc *, struct mbuf *,
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struct ieee80211_node *, int);
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static void wpi_start(struct ifnet *);
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static void wpi_start_locked(struct ifnet *);
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static int wpi_raw_xmit(struct ieee80211_node *, struct mbuf *,
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const struct ieee80211_bpf_params *);
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static void wpi_scan_start(struct ieee80211com *);
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static void wpi_scan_end(struct ieee80211com *);
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static void wpi_set_channel(struct ieee80211com *);
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static void wpi_scan_curchan(struct ieee80211_scan_state *, unsigned long);
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static void wpi_scan_mindwell(struct ieee80211_scan_state *);
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static int wpi_ioctl(struct ifnet *, u_long, caddr_t);
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static void wpi_read_eeprom(struct wpi_softc *,
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uint8_t macaddr[IEEE80211_ADDR_LEN]);
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static void wpi_read_eeprom_channels(struct wpi_softc *, int);
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static void wpi_read_eeprom_group(struct wpi_softc *, int);
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static int wpi_cmd(struct wpi_softc *, int, const void *, int, int);
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static int wpi_wme_update(struct ieee80211com *);
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static int wpi_mrr_setup(struct wpi_softc *);
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static void wpi_set_led(struct wpi_softc *, uint8_t, uint8_t, uint8_t);
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static void wpi_enable_tsf(struct wpi_softc *, struct ieee80211_node *);
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#if 0
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static int wpi_setup_beacon(struct wpi_softc *, struct ieee80211_node *);
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#endif
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static int wpi_auth(struct wpi_softc *, struct ieee80211vap *);
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static int wpi_run(struct wpi_softc *, struct ieee80211vap *);
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static int wpi_scan(struct wpi_softc *);
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static int wpi_config(struct wpi_softc *);
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static void wpi_stop_master(struct wpi_softc *);
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static int wpi_power_up(struct wpi_softc *);
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static int wpi_reset(struct wpi_softc *);
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static void wpi_hwreset(void *, int);
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static void wpi_rfreset(void *, int);
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static void wpi_hw_config(struct wpi_softc *);
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static void wpi_init(void *);
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static void wpi_init_locked(struct wpi_softc *, int);
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static void wpi_stop(struct wpi_softc *);
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static void wpi_stop_locked(struct wpi_softc *);
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static int wpi_set_txpower(struct wpi_softc *, struct ieee80211_channel *,
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int);
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static void wpi_calib_timeout(void *);
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static void wpi_power_calibration(struct wpi_softc *, int);
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static int wpi_get_power_index(struct wpi_softc *,
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struct wpi_power_group *, struct ieee80211_channel *, int);
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#ifdef WPI_DEBUG
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static const char *wpi_cmd_str(int);
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#endif
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static int wpi_probe(device_t);
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static int wpi_attach(device_t);
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static int wpi_detach(device_t);
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static int wpi_shutdown(device_t);
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static int wpi_suspend(device_t);
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static int wpi_resume(device_t);
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static device_method_t wpi_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, wpi_probe),
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DEVMETHOD(device_attach, wpi_attach),
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DEVMETHOD(device_detach, wpi_detach),
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DEVMETHOD(device_shutdown, wpi_shutdown),
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DEVMETHOD(device_suspend, wpi_suspend),
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DEVMETHOD(device_resume, wpi_resume),
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DEVMETHOD_END
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};
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static driver_t wpi_driver = {
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"wpi",
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wpi_methods,
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sizeof (struct wpi_softc)
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};
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static devclass_t wpi_devclass;
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DRIVER_MODULE(wpi, pci, wpi_driver, wpi_devclass, NULL, NULL);
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MODULE_VERSION(wpi, 1);
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static const uint8_t wpi_ridx_to_plcp[] = {
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/* OFDM: IEEE Std 802.11a-1999, pp. 14 Table 80 */
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/* R1-R4 (ral/ural is R4-R1) */
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0xd, 0xf, 0x5, 0x7, 0x9, 0xb, 0x1, 0x3,
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/* CCK: device-dependent */
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10, 20, 55, 110
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};
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static const uint8_t wpi_ridx_to_rate[] = {
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12, 18, 24, 36, 48, 72, 96, 108, /* OFDM */
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2, 4, 11, 22 /*CCK */
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};
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static int
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wpi_probe(device_t dev)
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{
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const struct wpi_ident *ident;
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for (ident = wpi_ident_table; ident->name != NULL; ident++) {
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if (pci_get_vendor(dev) == ident->vendor &&
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pci_get_device(dev) == ident->device) {
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device_set_desc(dev, ident->name);
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return (BUS_PROBE_DEFAULT);
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}
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}
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return ENXIO;
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}
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/**
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* Load the firmare image from disk to the allocated dma buffer.
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* we also maintain the reference to the firmware pointer as there
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* is times where we may need to reload the firmware but we are not
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* in a context that can access the filesystem (ie taskq cause by restart)
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*
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* @return 0 on success, an errno on failure
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*/
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static int
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wpi_load_firmware(struct wpi_softc *sc)
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{
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const struct firmware *fp;
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struct wpi_dma_info *dma = &sc->fw_dma;
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const struct wpi_firmware_hdr *hdr;
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const uint8_t *itext, *idata, *rtext, *rdata, *btext;
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uint32_t itextsz, idatasz, rtextsz, rdatasz, btextsz;
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int error;
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DPRINTFN(WPI_DEBUG_FIRMWARE,
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("Attempting Loading Firmware from wpi_fw module\n"));
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WPI_UNLOCK(sc);
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if (sc->fw_fp == NULL && (sc->fw_fp = firmware_get("wpifw")) == NULL) {
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device_printf(sc->sc_dev,
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"could not load firmware image 'wpifw'\n");
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error = ENOENT;
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WPI_LOCK(sc);
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goto fail;
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}
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fp = sc->fw_fp;
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WPI_LOCK(sc);
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/* Validate the firmware is minimum a particular version */
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if (fp->version < WPI_FW_MINVERSION) {
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device_printf(sc->sc_dev,
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"firmware version is too old. Need %d, got %d\n",
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WPI_FW_MINVERSION,
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fp->version);
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error = ENXIO;
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goto fail;
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}
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if (fp->datasize < sizeof (struct wpi_firmware_hdr)) {
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device_printf(sc->sc_dev,
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"firmware file too short: %zu bytes\n", fp->datasize);
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error = ENXIO;
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goto fail;
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}
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hdr = (const struct wpi_firmware_hdr *)fp->data;
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/* | RUNTIME FIRMWARE | INIT FIRMWARE | BOOT FW |
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|HDR|<--TEXT-->|<--DATA-->|<--TEXT-->|<--DATA-->|<--TEXT-->| */
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rtextsz = le32toh(hdr->rtextsz);
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rdatasz = le32toh(hdr->rdatasz);
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itextsz = le32toh(hdr->itextsz);
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idatasz = le32toh(hdr->idatasz);
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btextsz = le32toh(hdr->btextsz);
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/* check that all firmware segments are present */
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if (fp->datasize < sizeof (struct wpi_firmware_hdr) +
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rtextsz + rdatasz + itextsz + idatasz + btextsz) {
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device_printf(sc->sc_dev,
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"firmware file too short: %zu bytes\n", fp->datasize);
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error = ENXIO; /* XXX appropriate error code? */
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goto fail;
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}
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/* get pointers to firmware segments */
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rtext = (const uint8_t *)(hdr + 1);
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rdata = rtext + rtextsz;
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itext = rdata + rdatasz;
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idata = itext + itextsz;
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btext = idata + idatasz;
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DPRINTFN(WPI_DEBUG_FIRMWARE,
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("Firmware Version: Major %d, Minor %d, Driver %d, \n"
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"runtime (text: %u, data: %u) init (text: %u, data %u) boot (text %u)\n",
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(le32toh(hdr->version) & 0xff000000) >> 24,
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(le32toh(hdr->version) & 0x00ff0000) >> 16,
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(le32toh(hdr->version) & 0x0000ffff),
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rtextsz, rdatasz,
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itextsz, idatasz, btextsz));
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DPRINTFN(WPI_DEBUG_FIRMWARE,("rtext 0x%x\n", *(const uint32_t *)rtext));
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DPRINTFN(WPI_DEBUG_FIRMWARE,("rdata 0x%x\n", *(const uint32_t *)rdata));
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DPRINTFN(WPI_DEBUG_FIRMWARE,("itext 0x%x\n", *(const uint32_t *)itext));
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DPRINTFN(WPI_DEBUG_FIRMWARE,("idata 0x%x\n", *(const uint32_t *)idata));
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DPRINTFN(WPI_DEBUG_FIRMWARE,("btext 0x%x\n", *(const uint32_t *)btext));
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/* sanity checks */
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if (rtextsz > WPI_FW_MAIN_TEXT_MAXSZ ||
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rdatasz > WPI_FW_MAIN_DATA_MAXSZ ||
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itextsz > WPI_FW_INIT_TEXT_MAXSZ ||
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idatasz > WPI_FW_INIT_DATA_MAXSZ ||
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btextsz > WPI_FW_BOOT_TEXT_MAXSZ ||
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(btextsz & 3) != 0) {
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device_printf(sc->sc_dev, "firmware invalid\n");
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error = EINVAL;
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goto fail;
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}
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/* copy initialization images into pre-allocated DMA-safe memory */
|
|
memcpy(dma->vaddr, idata, idatasz);
|
|
memcpy(dma->vaddr + WPI_FW_INIT_DATA_MAXSZ, itext, itextsz);
|
|
|
|
bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE);
|
|
|
|
/* tell adapter where to find initialization images */
|
|
wpi_mem_lock(sc);
|
|
wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr);
|
|
wpi_mem_write(sc, WPI_MEM_DATA_SIZE, idatasz);
|
|
wpi_mem_write(sc, WPI_MEM_TEXT_BASE,
|
|
dma->paddr + WPI_FW_INIT_DATA_MAXSZ);
|
|
wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, itextsz);
|
|
wpi_mem_unlock(sc);
|
|
|
|
/* load firmware boot code */
|
|
if ((error = wpi_load_microcode(sc, btext, btextsz)) != 0) {
|
|
device_printf(sc->sc_dev, "Failed to load microcode\n");
|
|
goto fail;
|
|
}
|
|
|
|
/* now press "execute" */
|
|
WPI_WRITE(sc, WPI_RESET, 0);
|
|
|
|
/* wait at most one second for the first alive notification */
|
|
if ((error = msleep(sc, &sc->sc_mtx, PCATCH, "wpiinit", hz)) != 0) {
|
|
device_printf(sc->sc_dev,
|
|
"timeout waiting for adapter to initialize\n");
|
|
goto fail;
|
|
}
|
|
|
|
/* copy runtime images into pre-allocated DMA-sage memory */
|
|
memcpy(dma->vaddr, rdata, rdatasz);
|
|
memcpy(dma->vaddr + WPI_FW_MAIN_DATA_MAXSZ, rtext, rtextsz);
|
|
bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE);
|
|
|
|
/* tell adapter where to find runtime images */
|
|
wpi_mem_lock(sc);
|
|
wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr);
|
|
wpi_mem_write(sc, WPI_MEM_DATA_SIZE, rdatasz);
|
|
wpi_mem_write(sc, WPI_MEM_TEXT_BASE,
|
|
dma->paddr + WPI_FW_MAIN_DATA_MAXSZ);
|
|
wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, WPI_FW_UPDATED | rtextsz);
|
|
wpi_mem_unlock(sc);
|
|
|
|
/* wait at most one second for the first alive notification */
|
|
if ((error = msleep(sc, &sc->sc_mtx, PCATCH, "wpiinit", hz)) != 0) {
|
|
device_printf(sc->sc_dev,
|
|
"timeout waiting for adapter to initialize2\n");
|
|
goto fail;
|
|
}
|
|
|
|
DPRINTFN(WPI_DEBUG_FIRMWARE,
|
|
("Firmware loaded to driver successfully\n"));
|
|
return error;
|
|
fail:
|
|
wpi_unload_firmware(sc);
|
|
return error;
|
|
}
|
|
|
|
/**
|
|
* Free the referenced firmware image
|
|
*/
|
|
static void
|
|
wpi_unload_firmware(struct wpi_softc *sc)
|
|
{
|
|
|
|
if (sc->fw_fp) {
|
|
WPI_UNLOCK(sc);
|
|
firmware_put(sc->fw_fp, FIRMWARE_UNLOAD);
|
|
WPI_LOCK(sc);
|
|
sc->fw_fp = NULL;
|
|
}
|
|
}
|
|
|
|
static int
|
|
wpi_attach(device_t dev)
|
|
{
|
|
struct wpi_softc *sc = device_get_softc(dev);
|
|
struct ifnet *ifp;
|
|
struct ieee80211com *ic;
|
|
int ac, error, rid, supportsa = 1;
|
|
uint32_t tmp;
|
|
const struct wpi_ident *ident;
|
|
uint8_t macaddr[IEEE80211_ADDR_LEN];
|
|
|
|
sc->sc_dev = dev;
|
|
|
|
if (bootverbose || WPI_DEBUG_SET)
|
|
device_printf(sc->sc_dev,"Driver Revision %s\n", VERSION);
|
|
|
|
/*
|
|
* Some card's only support 802.11b/g not a, check to see if
|
|
* this is one such card. A 0x0 in the subdevice table indicates
|
|
* the entire subdevice range is to be ignored.
|
|
*/
|
|
for (ident = wpi_ident_table; ident->name != NULL; ident++) {
|
|
if (ident->subdevice &&
|
|
pci_get_subdevice(dev) == ident->subdevice) {
|
|
supportsa = 0;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Create the tasks that can be queued */
|
|
TASK_INIT(&sc->sc_restarttask, 0, wpi_hwreset, sc);
|
|
TASK_INIT(&sc->sc_radiotask, 0, wpi_rfreset, sc);
|
|
|
|
WPI_LOCK_INIT(sc);
|
|
|
|
callout_init_mtx(&sc->calib_to, &sc->sc_mtx, 0);
|
|
callout_init_mtx(&sc->watchdog_to, &sc->sc_mtx, 0);
|
|
|
|
/* disable the retry timeout register */
|
|
pci_write_config(dev, 0x41, 0, 1);
|
|
|
|
/* enable bus-mastering */
|
|
pci_enable_busmaster(dev);
|
|
|
|
rid = PCIR_BAR(0);
|
|
sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
|
|
RF_ACTIVE);
|
|
if (sc->mem == NULL) {
|
|
device_printf(dev, "could not allocate memory resource\n");
|
|
error = ENOMEM;
|
|
goto fail;
|
|
}
|
|
|
|
sc->sc_st = rman_get_bustag(sc->mem);
|
|
sc->sc_sh = rman_get_bushandle(sc->mem);
|
|
|
|
rid = 0;
|
|
sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
|
|
RF_ACTIVE | RF_SHAREABLE);
|
|
if (sc->irq == NULL) {
|
|
device_printf(dev, "could not allocate interrupt resource\n");
|
|
error = ENOMEM;
|
|
goto fail;
|
|
}
|
|
|
|
/*
|
|
* Allocate DMA memory for firmware transfers.
|
|
*/
|
|
if ((error = wpi_alloc_fwmem(sc)) != 0) {
|
|
printf(": could not allocate firmware memory\n");
|
|
error = ENOMEM;
|
|
goto fail;
|
|
}
|
|
|
|
/*
|
|
* Put adapter into a known state.
|
|
*/
|
|
if ((error = wpi_reset(sc)) != 0) {
|
|
device_printf(dev, "could not reset adapter\n");
|
|
goto fail;
|
|
}
|
|
|
|
wpi_mem_lock(sc);
|
|
tmp = wpi_mem_read(sc, WPI_MEM_PCIDEV);
|
|
if (bootverbose || WPI_DEBUG_SET)
|
|
device_printf(sc->sc_dev, "Hardware Revision (0x%X)\n", tmp);
|
|
|
|
wpi_mem_unlock(sc);
|
|
|
|
/* Allocate shared page */
|
|
if ((error = wpi_alloc_shared(sc)) != 0) {
|
|
device_printf(dev, "could not allocate shared page\n");
|
|
goto fail;
|
|
}
|
|
|
|
/* tx data queues - 4 for QoS purposes */
|
|
for (ac = 0; ac < WME_NUM_AC; ac++) {
|
|
error = wpi_alloc_tx_ring(sc, &sc->txq[ac], WPI_TX_RING_COUNT, ac);
|
|
if (error != 0) {
|
|
device_printf(dev, "could not allocate Tx ring %d\n",ac);
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
/* command queue to talk to the card's firmware */
|
|
error = wpi_alloc_tx_ring(sc, &sc->cmdq, WPI_CMD_RING_COUNT, 4);
|
|
if (error != 0) {
|
|
device_printf(dev, "could not allocate command ring\n");
|
|
goto fail;
|
|
}
|
|
|
|
/* receive data queue */
|
|
error = wpi_alloc_rx_ring(sc, &sc->rxq);
|
|
if (error != 0) {
|
|
device_printf(dev, "could not allocate Rx ring\n");
|
|
goto fail;
|
|
}
|
|
|
|
ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211);
|
|
if (ifp == NULL) {
|
|
device_printf(dev, "can not if_alloc()\n");
|
|
error = ENOMEM;
|
|
goto fail;
|
|
}
|
|
ic = ifp->if_l2com;
|
|
|
|
ic->ic_ifp = ifp;
|
|
ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */
|
|
ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */
|
|
|
|
/* set device capabilities */
|
|
ic->ic_caps =
|
|
IEEE80211_C_STA /* station mode supported */
|
|
| IEEE80211_C_MONITOR /* monitor mode supported */
|
|
| IEEE80211_C_TXPMGT /* tx power management */
|
|
| IEEE80211_C_SHSLOT /* short slot time supported */
|
|
| IEEE80211_C_SHPREAMBLE /* short preamble supported */
|
|
| IEEE80211_C_WPA /* 802.11i */
|
|
/* XXX looks like WME is partly supported? */
|
|
#if 0
|
|
| IEEE80211_C_IBSS /* IBSS mode support */
|
|
| IEEE80211_C_BGSCAN /* capable of bg scanning */
|
|
| IEEE80211_C_WME /* 802.11e */
|
|
| IEEE80211_C_HOSTAP /* Host access point mode */
|
|
#endif
|
|
;
|
|
|
|
/*
|
|
* Read in the eeprom and also setup the channels for
|
|
* net80211. We don't set the rates as net80211 does this for us
|
|
*/
|
|
wpi_read_eeprom(sc, macaddr);
|
|
|
|
if (bootverbose || WPI_DEBUG_SET) {
|
|
device_printf(sc->sc_dev, "Regulatory Domain: %.4s\n", sc->domain);
|
|
device_printf(sc->sc_dev, "Hardware Type: %c\n",
|
|
sc->type > 1 ? 'B': '?');
|
|
device_printf(sc->sc_dev, "Hardware Revision: %c\n",
|
|
((le16toh(sc->rev) & 0xf0) == 0xd0) ? 'D': '?');
|
|
device_printf(sc->sc_dev, "SKU %s support 802.11a\n",
|
|
supportsa ? "does" : "does not");
|
|
|
|
/* XXX hw_config uses the PCIDEV for the Hardware rev. Must check
|
|
what sc->rev really represents - benjsc 20070615 */
|
|
}
|
|
|
|
if_initname(ifp, device_get_name(dev), device_get_unit(dev));
|
|
ifp->if_softc = sc;
|
|
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
|
|
ifp->if_init = wpi_init;
|
|
ifp->if_ioctl = wpi_ioctl;
|
|
ifp->if_start = wpi_start;
|
|
IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen);
|
|
ifp->if_snd.ifq_drv_maxlen = ifqmaxlen;
|
|
IFQ_SET_READY(&ifp->if_snd);
|
|
|
|
ieee80211_ifattach(ic, macaddr);
|
|
/* override default methods */
|
|
ic->ic_raw_xmit = wpi_raw_xmit;
|
|
ic->ic_wme.wme_update = wpi_wme_update;
|
|
ic->ic_scan_start = wpi_scan_start;
|
|
ic->ic_scan_end = wpi_scan_end;
|
|
ic->ic_set_channel = wpi_set_channel;
|
|
ic->ic_scan_curchan = wpi_scan_curchan;
|
|
ic->ic_scan_mindwell = wpi_scan_mindwell;
|
|
|
|
ic->ic_vap_create = wpi_vap_create;
|
|
ic->ic_vap_delete = wpi_vap_delete;
|
|
|
|
ieee80211_radiotap_attach(ic,
|
|
&sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap),
|
|
WPI_TX_RADIOTAP_PRESENT,
|
|
&sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap),
|
|
WPI_RX_RADIOTAP_PRESENT);
|
|
|
|
/*
|
|
* Hook our interrupt after all initialization is complete.
|
|
*/
|
|
error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET |INTR_MPSAFE,
|
|
NULL, wpi_intr, sc, &sc->sc_ih);
|
|
if (error != 0) {
|
|
device_printf(dev, "could not set up interrupt\n");
|
|
goto fail;
|
|
}
|
|
|
|
if (bootverbose)
|
|
ieee80211_announce(ic);
|
|
#ifdef XXX_DEBUG
|
|
ieee80211_announce_channels(ic);
|
|
#endif
|
|
return 0;
|
|
|
|
fail: wpi_detach(dev);
|
|
return ENXIO;
|
|
}
|
|
|
|
static int
|
|
wpi_detach(device_t dev)
|
|
{
|
|
struct wpi_softc *sc = device_get_softc(dev);
|
|
struct ifnet *ifp = sc->sc_ifp;
|
|
struct ieee80211com *ic;
|
|
int ac;
|
|
|
|
if (sc->irq != NULL)
|
|
bus_teardown_intr(dev, sc->irq, sc->sc_ih);
|
|
|
|
if (ifp != NULL) {
|
|
ic = ifp->if_l2com;
|
|
|
|
ieee80211_draintask(ic, &sc->sc_restarttask);
|
|
ieee80211_draintask(ic, &sc->sc_radiotask);
|
|
wpi_stop(sc);
|
|
callout_drain(&sc->watchdog_to);
|
|
callout_drain(&sc->calib_to);
|
|
ieee80211_ifdetach(ic);
|
|
}
|
|
|
|
WPI_LOCK(sc);
|
|
if (sc->txq[0].data_dmat) {
|
|
for (ac = 0; ac < WME_NUM_AC; ac++)
|
|
wpi_free_tx_ring(sc, &sc->txq[ac]);
|
|
|
|
wpi_free_tx_ring(sc, &sc->cmdq);
|
|
wpi_free_rx_ring(sc, &sc->rxq);
|
|
wpi_free_shared(sc);
|
|
}
|
|
|
|
if (sc->fw_fp != NULL) {
|
|
wpi_unload_firmware(sc);
|
|
}
|
|
|
|
if (sc->fw_dma.tag)
|
|
wpi_free_fwmem(sc);
|
|
WPI_UNLOCK(sc);
|
|
|
|
if (sc->irq != NULL)
|
|
bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq),
|
|
sc->irq);
|
|
if (sc->mem != NULL)
|
|
bus_release_resource(dev, SYS_RES_MEMORY,
|
|
rman_get_rid(sc->mem), sc->mem);
|
|
|
|
if (ifp != NULL)
|
|
if_free(ifp);
|
|
|
|
WPI_LOCK_DESTROY(sc);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct ieee80211vap *
|
|
wpi_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 wpi_vap *wvp;
|
|
struct ieee80211vap *vap;
|
|
|
|
if (!TAILQ_EMPTY(&ic->ic_vaps)) /* only one at a time */
|
|
return NULL;
|
|
wvp = (struct wpi_vap *) malloc(sizeof(struct wpi_vap),
|
|
M_80211_VAP, M_NOWAIT | M_ZERO);
|
|
if (wvp == NULL)
|
|
return NULL;
|
|
vap = &wvp->vap;
|
|
ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac);
|
|
/* override with driver methods */
|
|
wvp->newstate = vap->iv_newstate;
|
|
vap->iv_newstate = wpi_newstate;
|
|
|
|
ieee80211_ratectl_init(vap);
|
|
/* complete setup */
|
|
ieee80211_vap_attach(vap, ieee80211_media_change, ieee80211_media_status);
|
|
ic->ic_opmode = opmode;
|
|
return vap;
|
|
}
|
|
|
|
static void
|
|
wpi_vap_delete(struct ieee80211vap *vap)
|
|
{
|
|
struct wpi_vap *wvp = WPI_VAP(vap);
|
|
|
|
ieee80211_ratectl_deinit(vap);
|
|
ieee80211_vap_detach(vap);
|
|
free(wvp, M_80211_VAP);
|
|
}
|
|
|
|
static void
|
|
wpi_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;
|
|
}
|
|
|
|
/*
|
|
* Allocates a contiguous block of dma memory of the requested size and
|
|
* alignment. Due to limitations of the FreeBSD dma subsystem as of 20071217,
|
|
* allocations greater than 4096 may fail. Hence if the requested alignment is
|
|
* greater we allocate 'alignment' size extra memory and shift the vaddr and
|
|
* paddr after the dma load. This bypasses the problem at the cost of a little
|
|
* more memory.
|
|
*/
|
|
static int
|
|
wpi_dma_contig_alloc(struct wpi_softc *sc, struct wpi_dma_info *dma,
|
|
void **kvap, bus_size_t size, bus_size_t alignment, int flags)
|
|
{
|
|
int error;
|
|
bus_size_t align;
|
|
bus_size_t reqsize;
|
|
|
|
DPRINTFN(WPI_DEBUG_DMA,
|
|
("Size: %zd - alignment %zd\n", size, alignment));
|
|
|
|
dma->size = size;
|
|
dma->tag = NULL;
|
|
|
|
if (alignment > 4096) {
|
|
align = PAGE_SIZE;
|
|
reqsize = size + alignment;
|
|
} else {
|
|
align = alignment;
|
|
reqsize = size;
|
|
}
|
|
error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), align,
|
|
0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR,
|
|
NULL, NULL, reqsize,
|
|
1, reqsize, flags,
|
|
NULL, NULL, &dma->tag);
|
|
if (error != 0) {
|
|
device_printf(sc->sc_dev,
|
|
"could not create shared page DMA tag\n");
|
|
goto fail;
|
|
}
|
|
error = bus_dmamem_alloc(dma->tag, (void **)&dma->vaddr_start,
|
|
flags | BUS_DMA_ZERO, &dma->map);
|
|
if (error != 0) {
|
|
device_printf(sc->sc_dev,
|
|
"could not allocate shared page DMA memory\n");
|
|
goto fail;
|
|
}
|
|
|
|
error = bus_dmamap_load(dma->tag, dma->map, dma->vaddr_start,
|
|
reqsize, wpi_dma_map_addr, &dma->paddr_start, flags);
|
|
|
|
/* Save the original pointers so we can free all the memory */
|
|
dma->paddr = dma->paddr_start;
|
|
dma->vaddr = dma->vaddr_start;
|
|
|
|
/*
|
|
* Check the alignment and increment by 4096 until we get the
|
|
* requested alignment. Fail if can't obtain the alignment
|
|
* we requested.
|
|
*/
|
|
if ((dma->paddr & (alignment -1 )) != 0) {
|
|
int i;
|
|
|
|
for (i = 0; i < alignment / 4096; i++) {
|
|
if ((dma->paddr & (alignment - 1 )) == 0)
|
|
break;
|
|
dma->paddr += 4096;
|
|
dma->vaddr += 4096;
|
|
}
|
|
if (i == alignment / 4096) {
|
|
device_printf(sc->sc_dev,
|
|
"alignment requirement was not satisfied\n");
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
if (error != 0) {
|
|
device_printf(sc->sc_dev,
|
|
"could not load shared page DMA map\n");
|
|
goto fail;
|
|
}
|
|
|
|
if (kvap != NULL)
|
|
*kvap = dma->vaddr;
|
|
|
|
return 0;
|
|
|
|
fail:
|
|
wpi_dma_contig_free(dma);
|
|
return error;
|
|
}
|
|
|
|
static void
|
|
wpi_dma_contig_free(struct wpi_dma_info *dma)
|
|
{
|
|
if (dma->tag) {
|
|
if (dma->vaddr_start != NULL) {
|
|
if (dma->paddr_start != 0) {
|
|
bus_dmamap_sync(dma->tag, dma->map,
|
|
BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
|
|
bus_dmamap_unload(dma->tag, dma->map);
|
|
}
|
|
bus_dmamem_free(dma->tag, dma->vaddr_start, dma->map);
|
|
}
|
|
bus_dma_tag_destroy(dma->tag);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Allocate a shared page between host and NIC.
|
|
*/
|
|
static int
|
|
wpi_alloc_shared(struct wpi_softc *sc)
|
|
{
|
|
int error;
|
|
|
|
error = wpi_dma_contig_alloc(sc, &sc->shared_dma,
|
|
(void **)&sc->shared, sizeof (struct wpi_shared),
|
|
PAGE_SIZE,
|
|
BUS_DMA_NOWAIT);
|
|
|
|
if (error != 0) {
|
|
device_printf(sc->sc_dev,
|
|
"could not allocate shared area DMA memory\n");
|
|
}
|
|
|
|
return error;
|
|
}
|
|
|
|
static void
|
|
wpi_free_shared(struct wpi_softc *sc)
|
|
{
|
|
wpi_dma_contig_free(&sc->shared_dma);
|
|
}
|
|
|
|
static int
|
|
wpi_alloc_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring)
|
|
{
|
|
|
|
int i, error;
|
|
|
|
ring->cur = 0;
|
|
|
|
error = wpi_dma_contig_alloc(sc, &ring->desc_dma,
|
|
(void **)&ring->desc, WPI_RX_RING_COUNT * sizeof (uint32_t),
|
|
WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT);
|
|
|
|
if (error != 0) {
|
|
device_printf(sc->sc_dev,
|
|
"%s: could not allocate rx ring DMA memory, error %d\n",
|
|
__func__, error);
|
|
goto fail;
|
|
}
|
|
|
|
error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
|
|
BUS_SPACE_MAXADDR_32BIT,
|
|
BUS_SPACE_MAXADDR, NULL, NULL, MJUMPAGESIZE, 1,
|
|
MJUMPAGESIZE, BUS_DMA_NOWAIT, NULL, NULL, &ring->data_dmat);
|
|
if (error != 0) {
|
|
device_printf(sc->sc_dev,
|
|
"%s: bus_dma_tag_create_failed, error %d\n",
|
|
__func__, error);
|
|
goto fail;
|
|
}
|
|
|
|
/*
|
|
* Setup Rx buffers.
|
|
*/
|
|
for (i = 0; i < WPI_RX_RING_COUNT; i++) {
|
|
struct wpi_rx_data *data = &ring->data[i];
|
|
struct mbuf *m;
|
|
bus_addr_t paddr;
|
|
|
|
error = bus_dmamap_create(ring->data_dmat, 0, &data->map);
|
|
if (error != 0) {
|
|
device_printf(sc->sc_dev,
|
|
"%s: bus_dmamap_create failed, error %d\n",
|
|
__func__, error);
|
|
goto fail;
|
|
}
|
|
m = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE);
|
|
if (m == NULL) {
|
|
device_printf(sc->sc_dev,
|
|
"%s: could not allocate rx mbuf\n", __func__);
|
|
error = ENOMEM;
|
|
goto fail;
|
|
}
|
|
/* map page */
|
|
error = bus_dmamap_load(ring->data_dmat, data->map,
|
|
mtod(m, caddr_t), MJUMPAGESIZE,
|
|
wpi_dma_map_addr, &paddr, BUS_DMA_NOWAIT);
|
|
if (error != 0 && error != EFBIG) {
|
|
device_printf(sc->sc_dev,
|
|
"%s: bus_dmamap_load failed, error %d\n",
|
|
__func__, error);
|
|
m_freem(m);
|
|
error = ENOMEM; /* XXX unique code */
|
|
goto fail;
|
|
}
|
|
bus_dmamap_sync(ring->data_dmat, data->map,
|
|
BUS_DMASYNC_PREWRITE);
|
|
|
|
data->m = m;
|
|
ring->desc[i] = htole32(paddr);
|
|
}
|
|
bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map,
|
|
BUS_DMASYNC_PREWRITE);
|
|
return 0;
|
|
fail:
|
|
wpi_free_rx_ring(sc, ring);
|
|
return error;
|
|
}
|
|
|
|
static void
|
|
wpi_reset_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring)
|
|
{
|
|
int ntries;
|
|
|
|
wpi_mem_lock(sc);
|
|
|
|
WPI_WRITE(sc, WPI_RX_CONFIG, 0);
|
|
|
|
for (ntries = 0; ntries < 100; ntries++) {
|
|
if (WPI_READ(sc, WPI_RX_STATUS) & WPI_RX_IDLE)
|
|
break;
|
|
DELAY(10);
|
|
}
|
|
|
|
wpi_mem_unlock(sc);
|
|
|
|
#ifdef WPI_DEBUG
|
|
if (ntries == 100 && wpi_debug > 0)
|
|
device_printf(sc->sc_dev, "timeout resetting Rx ring\n");
|
|
#endif
|
|
|
|
ring->cur = 0;
|
|
}
|
|
|
|
static void
|
|
wpi_free_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring)
|
|
{
|
|
int i;
|
|
|
|
wpi_dma_contig_free(&ring->desc_dma);
|
|
|
|
for (i = 0; i < WPI_RX_RING_COUNT; i++) {
|
|
struct wpi_rx_data *data = &ring->data[i];
|
|
|
|
if (data->m != NULL) {
|
|
bus_dmamap_sync(ring->data_dmat, data->map,
|
|
BUS_DMASYNC_POSTREAD);
|
|
bus_dmamap_unload(ring->data_dmat, data->map);
|
|
m_freem(data->m);
|
|
}
|
|
if (data->map != NULL)
|
|
bus_dmamap_destroy(ring->data_dmat, data->map);
|
|
}
|
|
}
|
|
|
|
static int
|
|
wpi_alloc_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring, int count,
|
|
int qid)
|
|
{
|
|
struct wpi_tx_data *data;
|
|
int i, error;
|
|
|
|
ring->qid = qid;
|
|
ring->count = count;
|
|
ring->queued = 0;
|
|
ring->cur = 0;
|
|
ring->data = NULL;
|
|
|
|
error = wpi_dma_contig_alloc(sc, &ring->desc_dma,
|
|
(void **)&ring->desc, count * sizeof (struct wpi_tx_desc),
|
|
WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT);
|
|
|
|
if (error != 0) {
|
|
device_printf(sc->sc_dev, "could not allocate tx dma memory\n");
|
|
goto fail;
|
|
}
|
|
|
|
/* update shared page with ring's base address */
|
|
sc->shared->txbase[qid] = htole32(ring->desc_dma.paddr);
|
|
|
|
error = wpi_dma_contig_alloc(sc, &ring->cmd_dma, (void **)&ring->cmd,
|
|
count * sizeof (struct wpi_tx_cmd), WPI_RING_DMA_ALIGN,
|
|
BUS_DMA_NOWAIT);
|
|
|
|
if (error != 0) {
|
|
device_printf(sc->sc_dev,
|
|
"could not allocate tx command DMA memory\n");
|
|
goto fail;
|
|
}
|
|
|
|
ring->data = malloc(count * sizeof (struct wpi_tx_data), M_DEVBUF,
|
|
M_NOWAIT | M_ZERO);
|
|
if (ring->data == NULL) {
|
|
device_printf(sc->sc_dev,
|
|
"could not allocate tx data slots\n");
|
|
goto fail;
|
|
}
|
|
|
|
error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
|
|
BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES,
|
|
WPI_MAX_SCATTER - 1, MCLBYTES, BUS_DMA_NOWAIT, NULL, NULL,
|
|
&ring->data_dmat);
|
|
if (error != 0) {
|
|
device_printf(sc->sc_dev, "could not create data DMA tag\n");
|
|
goto fail;
|
|
}
|
|
|
|
for (i = 0; i < count; i++) {
|
|
data = &ring->data[i];
|
|
|
|
error = bus_dmamap_create(ring->data_dmat, 0, &data->map);
|
|
if (error != 0) {
|
|
device_printf(sc->sc_dev,
|
|
"could not create tx buf DMA map\n");
|
|
goto fail;
|
|
}
|
|
bus_dmamap_sync(ring->data_dmat, data->map,
|
|
BUS_DMASYNC_PREWRITE);
|
|
}
|
|
|
|
return 0;
|
|
|
|
fail:
|
|
wpi_free_tx_ring(sc, ring);
|
|
return error;
|
|
}
|
|
|
|
static void
|
|
wpi_reset_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring)
|
|
{
|
|
struct wpi_tx_data *data;
|
|
int i, ntries;
|
|
|
|
wpi_mem_lock(sc);
|
|
|
|
WPI_WRITE(sc, WPI_TX_CONFIG(ring->qid), 0);
|
|
for (ntries = 0; ntries < 100; ntries++) {
|
|
if (WPI_READ(sc, WPI_TX_STATUS) & WPI_TX_IDLE(ring->qid))
|
|
break;
|
|
DELAY(10);
|
|
}
|
|
#ifdef WPI_DEBUG
|
|
if (ntries == 100 && wpi_debug > 0)
|
|
device_printf(sc->sc_dev, "timeout resetting Tx ring %d\n",
|
|
ring->qid);
|
|
#endif
|
|
wpi_mem_unlock(sc);
|
|
|
|
for (i = 0; i < ring->count; i++) {
|
|
data = &ring->data[i];
|
|
|
|
if (data->m != NULL) {
|
|
bus_dmamap_unload(ring->data_dmat, data->map);
|
|
m_freem(data->m);
|
|
data->m = NULL;
|
|
}
|
|
}
|
|
|
|
ring->queued = 0;
|
|
ring->cur = 0;
|
|
}
|
|
|
|
static void
|
|
wpi_free_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring)
|
|
{
|
|
struct wpi_tx_data *data;
|
|
int i;
|
|
|
|
wpi_dma_contig_free(&ring->desc_dma);
|
|
wpi_dma_contig_free(&ring->cmd_dma);
|
|
|
|
if (ring->data != NULL) {
|
|
for (i = 0; i < ring->count; i++) {
|
|
data = &ring->data[i];
|
|
|
|
if (data->m != NULL) {
|
|
bus_dmamap_sync(ring->data_dmat, data->map,
|
|
BUS_DMASYNC_POSTWRITE);
|
|
bus_dmamap_unload(ring->data_dmat, data->map);
|
|
m_freem(data->m);
|
|
data->m = NULL;
|
|
}
|
|
}
|
|
free(ring->data, M_DEVBUF);
|
|
}
|
|
|
|
if (ring->data_dmat != NULL)
|
|
bus_dma_tag_destroy(ring->data_dmat);
|
|
}
|
|
|
|
static int
|
|
wpi_shutdown(device_t dev)
|
|
{
|
|
struct wpi_softc *sc = device_get_softc(dev);
|
|
|
|
WPI_LOCK(sc);
|
|
wpi_stop_locked(sc);
|
|
wpi_unload_firmware(sc);
|
|
WPI_UNLOCK(sc);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
wpi_suspend(device_t dev)
|
|
{
|
|
struct wpi_softc *sc = device_get_softc(dev);
|
|
struct ieee80211com *ic = sc->sc_ifp->if_l2com;
|
|
|
|
ieee80211_suspend_all(ic);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
wpi_resume(device_t dev)
|
|
{
|
|
struct wpi_softc *sc = device_get_softc(dev);
|
|
struct ieee80211com *ic = sc->sc_ifp->if_l2com;
|
|
|
|
pci_write_config(dev, 0x41, 0, 1);
|
|
|
|
ieee80211_resume_all(ic);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Called by net80211 when ever there is a change to 80211 state machine
|
|
*/
|
|
static int
|
|
wpi_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
|
|
{
|
|
struct wpi_vap *wvp = WPI_VAP(vap);
|
|
struct ieee80211com *ic = vap->iv_ic;
|
|
struct ifnet *ifp = ic->ic_ifp;
|
|
struct wpi_softc *sc = ifp->if_softc;
|
|
int error;
|
|
|
|
DPRINTF(("%s: %s -> %s flags 0x%x\n", __func__,
|
|
ieee80211_state_name[vap->iv_state],
|
|
ieee80211_state_name[nstate], sc->flags));
|
|
|
|
IEEE80211_UNLOCK(ic);
|
|
WPI_LOCK(sc);
|
|
if (nstate == IEEE80211_S_SCAN && vap->iv_state != IEEE80211_S_INIT) {
|
|
/*
|
|
* On !INIT -> SCAN transitions, we need to clear any possible
|
|
* knowledge about associations.
|
|
*/
|
|
error = wpi_config(sc);
|
|
if (error != 0) {
|
|
device_printf(sc->sc_dev,
|
|
"%s: device config failed, error %d\n",
|
|
__func__, error);
|
|
}
|
|
}
|
|
if (nstate == IEEE80211_S_AUTH ||
|
|
(nstate == IEEE80211_S_ASSOC && vap->iv_state == IEEE80211_S_RUN)) {
|
|
/*
|
|
* The node must be registered in the firmware before auth.
|
|
* Also the associd must be cleared on RUN -> ASSOC
|
|
* transitions.
|
|
*/
|
|
error = wpi_auth(sc, vap);
|
|
if (error != 0) {
|
|
device_printf(sc->sc_dev,
|
|
"%s: could not move to auth state, error %d\n",
|
|
__func__, error);
|
|
}
|
|
}
|
|
if (nstate == IEEE80211_S_RUN && vap->iv_state != IEEE80211_S_RUN) {
|
|
error = wpi_run(sc, vap);
|
|
if (error != 0) {
|
|
device_printf(sc->sc_dev,
|
|
"%s: could not move to run state, error %d\n",
|
|
__func__, error);
|
|
}
|
|
}
|
|
if (nstate == IEEE80211_S_RUN) {
|
|
/* RUN -> RUN transition; just restart the timers */
|
|
wpi_calib_timeout(sc);
|
|
/* XXX split out rate control timer */
|
|
}
|
|
WPI_UNLOCK(sc);
|
|
IEEE80211_LOCK(ic);
|
|
return wvp->newstate(vap, nstate, arg);
|
|
}
|
|
|
|
/*
|
|
* Grab exclusive access to NIC memory.
|
|
*/
|
|
static void
|
|
wpi_mem_lock(struct wpi_softc *sc)
|
|
{
|
|
int ntries;
|
|
uint32_t tmp;
|
|
|
|
tmp = WPI_READ(sc, WPI_GPIO_CTL);
|
|
WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_MAC);
|
|
|
|
/* spin until we actually get the lock */
|
|
for (ntries = 0; ntries < 100; ntries++) {
|
|
if ((WPI_READ(sc, WPI_GPIO_CTL) &
|
|
(WPI_GPIO_CLOCK | WPI_GPIO_SLEEP)) == WPI_GPIO_CLOCK)
|
|
break;
|
|
DELAY(10);
|
|
}
|
|
if (ntries == 100)
|
|
device_printf(sc->sc_dev, "could not lock memory\n");
|
|
}
|
|
|
|
/*
|
|
* Release lock on NIC memory.
|
|
*/
|
|
static void
|
|
wpi_mem_unlock(struct wpi_softc *sc)
|
|
{
|
|
uint32_t tmp = WPI_READ(sc, WPI_GPIO_CTL);
|
|
WPI_WRITE(sc, WPI_GPIO_CTL, tmp & ~WPI_GPIO_MAC);
|
|
}
|
|
|
|
static uint32_t
|
|
wpi_mem_read(struct wpi_softc *sc, uint16_t addr)
|
|
{
|
|
WPI_WRITE(sc, WPI_READ_MEM_ADDR, WPI_MEM_4 | addr);
|
|
return WPI_READ(sc, WPI_READ_MEM_DATA);
|
|
}
|
|
|
|
static void
|
|
wpi_mem_write(struct wpi_softc *sc, uint16_t addr, uint32_t data)
|
|
{
|
|
WPI_WRITE(sc, WPI_WRITE_MEM_ADDR, WPI_MEM_4 | addr);
|
|
WPI_WRITE(sc, WPI_WRITE_MEM_DATA, data);
|
|
}
|
|
|
|
static void
|
|
wpi_mem_write_region_4(struct wpi_softc *sc, uint16_t addr,
|
|
const uint32_t *data, int wlen)
|
|
{
|
|
for (; wlen > 0; wlen--, data++, addr+=4)
|
|
wpi_mem_write(sc, addr, *data);
|
|
}
|
|
|
|
/*
|
|
* Read data from the EEPROM. We access EEPROM through the MAC instead of
|
|
* using the traditional bit-bang method. Data is read up until len bytes have
|
|
* been obtained.
|
|
*/
|
|
static uint16_t
|
|
wpi_read_prom_data(struct wpi_softc *sc, uint32_t addr, void *data, int len)
|
|
{
|
|
int ntries;
|
|
uint32_t val;
|
|
uint8_t *out = data;
|
|
|
|
wpi_mem_lock(sc);
|
|
|
|
for (; len > 0; len -= 2, addr++) {
|
|
WPI_WRITE(sc, WPI_EEPROM_CTL, addr << 2);
|
|
|
|
for (ntries = 0; ntries < 10; ntries++) {
|
|
if ((val = WPI_READ(sc, WPI_EEPROM_CTL)) & WPI_EEPROM_READY)
|
|
break;
|
|
DELAY(5);
|
|
}
|
|
|
|
if (ntries == 10) {
|
|
device_printf(sc->sc_dev, "could not read EEPROM\n");
|
|
return ETIMEDOUT;
|
|
}
|
|
|
|
*out++= val >> 16;
|
|
if (len > 1)
|
|
*out ++= val >> 24;
|
|
}
|
|
|
|
wpi_mem_unlock(sc);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* The firmware text and data segments are transferred to the NIC using DMA.
|
|
* The driver just copies the firmware into DMA-safe memory and tells the NIC
|
|
* where to find it. Once the NIC has copied the firmware into its internal
|
|
* memory, we can free our local copy in the driver.
|
|
*/
|
|
static int
|
|
wpi_load_microcode(struct wpi_softc *sc, const uint8_t *fw, int size)
|
|
{
|
|
int error, ntries;
|
|
|
|
DPRINTFN(WPI_DEBUG_HW,("Loading microcode size 0x%x\n", size));
|
|
|
|
size /= sizeof(uint32_t);
|
|
|
|
wpi_mem_lock(sc);
|
|
|
|
wpi_mem_write_region_4(sc, WPI_MEM_UCODE_BASE,
|
|
(const uint32_t *)fw, size);
|
|
|
|
wpi_mem_write(sc, WPI_MEM_UCODE_SRC, 0);
|
|
wpi_mem_write(sc, WPI_MEM_UCODE_DST, WPI_FW_TEXT);
|
|
wpi_mem_write(sc, WPI_MEM_UCODE_SIZE, size);
|
|
|
|
/* run microcode */
|
|
wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_RUN);
|
|
|
|
/* wait while the adapter is busy copying the firmware */
|
|
for (error = 0, ntries = 0; ntries < 1000; ntries++) {
|
|
uint32_t status = WPI_READ(sc, WPI_TX_STATUS);
|
|
DPRINTFN(WPI_DEBUG_HW,
|
|
("firmware status=0x%x, val=0x%x, result=0x%x\n", status,
|
|
WPI_TX_IDLE(6), status & WPI_TX_IDLE(6)));
|
|
if (status & WPI_TX_IDLE(6)) {
|
|
DPRINTFN(WPI_DEBUG_HW,
|
|
("Status Match! - ntries = %d\n", ntries));
|
|
break;
|
|
}
|
|
DELAY(10);
|
|
}
|
|
if (ntries == 1000) {
|
|
device_printf(sc->sc_dev, "timeout transferring firmware\n");
|
|
error = ETIMEDOUT;
|
|
}
|
|
|
|
/* start the microcode executing */
|
|
wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_ENABLE);
|
|
|
|
wpi_mem_unlock(sc);
|
|
|
|
return (error);
|
|
}
|
|
|
|
static void
|
|
wpi_rx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc,
|
|
struct wpi_rx_data *data)
|
|
{
|
|
struct ifnet *ifp = sc->sc_ifp;
|
|
struct ieee80211com *ic = ifp->if_l2com;
|
|
struct wpi_rx_ring *ring = &sc->rxq;
|
|
struct wpi_rx_stat *stat;
|
|
struct wpi_rx_head *head;
|
|
struct wpi_rx_tail *tail;
|
|
struct ieee80211_node *ni;
|
|
struct mbuf *m, *mnew;
|
|
bus_addr_t paddr;
|
|
int error;
|
|
|
|
stat = (struct wpi_rx_stat *)(desc + 1);
|
|
|
|
if (stat->len > WPI_STAT_MAXLEN) {
|
|
device_printf(sc->sc_dev, "invalid rx statistic header\n");
|
|
if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
|
|
return;
|
|
}
|
|
|
|
bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_POSTREAD);
|
|
head = (struct wpi_rx_head *)((caddr_t)(stat + 1) + stat->len);
|
|
tail = (struct wpi_rx_tail *)((caddr_t)(head + 1) + le16toh(head->len));
|
|
|
|
DPRINTFN(WPI_DEBUG_RX, ("rx intr: idx=%d len=%d stat len=%d rssi=%d "
|
|
"rate=%x chan=%d tstamp=%ju\n", ring->cur, le32toh(desc->len),
|
|
le16toh(head->len), (int8_t)stat->rssi, head->rate, head->chan,
|
|
(uintmax_t)le64toh(tail->tstamp)));
|
|
|
|
/* discard Rx frames with bad CRC early */
|
|
if ((le32toh(tail->flags) & WPI_RX_NOERROR) != WPI_RX_NOERROR) {
|
|
DPRINTFN(WPI_DEBUG_RX, ("%s: rx flags error %x\n", __func__,
|
|
le32toh(tail->flags)));
|
|
if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
|
|
return;
|
|
}
|
|
if (le16toh(head->len) < sizeof (struct ieee80211_frame)) {
|
|
DPRINTFN(WPI_DEBUG_RX, ("%s: frame too short: %d\n", __func__,
|
|
le16toh(head->len)));
|
|
if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
|
|
return;
|
|
}
|
|
|
|
/* XXX don't need mbuf, just dma buffer */
|
|
mnew = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE);
|
|
if (mnew == NULL) {
|
|
DPRINTFN(WPI_DEBUG_RX, ("%s: no mbuf to restock ring\n",
|
|
__func__));
|
|
if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
|
|
return;
|
|
}
|
|
bus_dmamap_unload(ring->data_dmat, data->map);
|
|
|
|
error = bus_dmamap_load(ring->data_dmat, data->map,
|
|
mtod(mnew, caddr_t), MJUMPAGESIZE,
|
|
wpi_dma_map_addr, &paddr, BUS_DMA_NOWAIT);
|
|
if (error != 0 && error != EFBIG) {
|
|
device_printf(sc->sc_dev,
|
|
"%s: bus_dmamap_load failed, error %d\n", __func__, error);
|
|
m_freem(mnew);
|
|
if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
|
|
return;
|
|
}
|
|
bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE);
|
|
|
|
/* finalize mbuf and swap in new one */
|
|
m = data->m;
|
|
m->m_pkthdr.rcvif = ifp;
|
|
m->m_data = (caddr_t)(head + 1);
|
|
m->m_pkthdr.len = m->m_len = le16toh(head->len);
|
|
|
|
data->m = mnew;
|
|
/* update Rx descriptor */
|
|
ring->desc[ring->cur] = htole32(paddr);
|
|
|
|
if (ieee80211_radiotap_active(ic)) {
|
|
struct wpi_rx_radiotap_header *tap = &sc->sc_rxtap;
|
|
|
|
tap->wr_flags = 0;
|
|
tap->wr_chan_freq =
|
|
htole16(ic->ic_channels[head->chan].ic_freq);
|
|
tap->wr_chan_flags =
|
|
htole16(ic->ic_channels[head->chan].ic_flags);
|
|
tap->wr_dbm_antsignal = (int8_t)(stat->rssi - WPI_RSSI_OFFSET);
|
|
tap->wr_dbm_antnoise = (int8_t)le16toh(stat->noise);
|
|
tap->wr_tsft = tail->tstamp;
|
|
tap->wr_antenna = (le16toh(head->flags) >> 4) & 0xf;
|
|
switch (head->rate) {
|
|
/* CCK rates */
|
|
case 10: tap->wr_rate = 2; break;
|
|
case 20: tap->wr_rate = 4; break;
|
|
case 55: tap->wr_rate = 11; break;
|
|
case 110: tap->wr_rate = 22; break;
|
|
/* OFDM rates */
|
|
case 0xd: tap->wr_rate = 12; break;
|
|
case 0xf: tap->wr_rate = 18; break;
|
|
case 0x5: tap->wr_rate = 24; break;
|
|
case 0x7: tap->wr_rate = 36; break;
|
|
case 0x9: tap->wr_rate = 48; break;
|
|
case 0xb: tap->wr_rate = 72; break;
|
|
case 0x1: tap->wr_rate = 96; break;
|
|
case 0x3: tap->wr_rate = 108; break;
|
|
/* unknown rate: should not happen */
|
|
default: tap->wr_rate = 0;
|
|
}
|
|
if (le16toh(head->flags) & 0x4)
|
|
tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
|
|
}
|
|
|
|
WPI_UNLOCK(sc);
|
|
|
|
ni = ieee80211_find_rxnode(ic, mtod(m, struct ieee80211_frame_min *));
|
|
if (ni != NULL) {
|
|
(void) ieee80211_input(ni, m, stat->rssi, 0);
|
|
ieee80211_free_node(ni);
|
|
} else
|
|
(void) ieee80211_input_all(ic, m, stat->rssi, 0);
|
|
|
|
WPI_LOCK(sc);
|
|
}
|
|
|
|
static void
|
|
wpi_tx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc)
|
|
{
|
|
struct ifnet *ifp = sc->sc_ifp;
|
|
struct wpi_tx_ring *ring = &sc->txq[desc->qid & 0x3];
|
|
struct wpi_tx_data *txdata = &ring->data[desc->idx];
|
|
struct wpi_tx_stat *stat = (struct wpi_tx_stat *)(desc + 1);
|
|
struct ieee80211_node *ni = txdata->ni;
|
|
struct ieee80211vap *vap = ni->ni_vap;
|
|
int retrycnt = 0;
|
|
|
|
DPRINTFN(WPI_DEBUG_TX, ("tx done: qid=%d idx=%d retries=%d nkill=%d "
|
|
"rate=%x duration=%d status=%x\n", desc->qid, desc->idx,
|
|
stat->ntries, stat->nkill, stat->rate, le32toh(stat->duration),
|
|
le32toh(stat->status)));
|
|
|
|
/*
|
|
* Update rate control statistics for the node.
|
|
* XXX we should not count mgmt frames since they're always sent at
|
|
* the lowest available bit-rate.
|
|
* XXX frames w/o ACK shouldn't be used either
|
|
*/
|
|
if (stat->ntries > 0) {
|
|
DPRINTFN(WPI_DEBUG_TX, ("%d retries\n", stat->ntries));
|
|
retrycnt = 1;
|
|
}
|
|
ieee80211_ratectl_tx_complete(vap, ni, IEEE80211_RATECTL_TX_SUCCESS,
|
|
&retrycnt, NULL);
|
|
|
|
/* XXX oerrors should only count errors !maxtries */
|
|
if ((le32toh(stat->status) & 0xff) != 1)
|
|
if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
|
|
else
|
|
if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1);
|
|
|
|
bus_dmamap_sync(ring->data_dmat, txdata->map, BUS_DMASYNC_POSTWRITE);
|
|
bus_dmamap_unload(ring->data_dmat, txdata->map);
|
|
/* XXX handle M_TXCB? */
|
|
m_freem(txdata->m);
|
|
txdata->m = NULL;
|
|
ieee80211_free_node(txdata->ni);
|
|
txdata->ni = NULL;
|
|
|
|
ring->queued--;
|
|
|
|
sc->sc_tx_timer = 0;
|
|
ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
|
|
wpi_start_locked(ifp);
|
|
}
|
|
|
|
static void
|
|
wpi_cmd_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc)
|
|
{
|
|
struct wpi_tx_ring *ring = &sc->cmdq;
|
|
struct wpi_tx_data *data;
|
|
|
|
DPRINTFN(WPI_DEBUG_CMD, ("cmd notification qid=%x idx=%d flags=%x "
|
|
"type=%s len=%d\n", desc->qid, desc->idx,
|
|
desc->flags, wpi_cmd_str(desc->type),
|
|
le32toh(desc->len)));
|
|
|
|
if ((desc->qid & 7) != 4)
|
|
return; /* not a command ack */
|
|
|
|
data = &ring->data[desc->idx];
|
|
|
|
/* if the command was mapped in a mbuf, free it */
|
|
if (data->m != NULL) {
|
|
bus_dmamap_unload(ring->data_dmat, data->map);
|
|
m_freem(data->m);
|
|
data->m = NULL;
|
|
}
|
|
|
|
sc->flags &= ~WPI_FLAG_BUSY;
|
|
wakeup(&ring->cmd[desc->idx]);
|
|
}
|
|
|
|
static void
|
|
wpi_notif_intr(struct wpi_softc *sc)
|
|
{
|
|
struct ifnet *ifp = sc->sc_ifp;
|
|
struct ieee80211com *ic = ifp->if_l2com;
|
|
struct wpi_rx_desc *desc;
|
|
struct wpi_rx_data *data;
|
|
uint32_t hw;
|
|
|
|
bus_dmamap_sync(sc->shared_dma.tag, sc->shared_dma.map,
|
|
BUS_DMASYNC_POSTREAD);
|
|
|
|
hw = le32toh(sc->shared->next);
|
|
while (sc->rxq.cur != hw) {
|
|
data = &sc->rxq.data[sc->rxq.cur];
|
|
|
|
bus_dmamap_sync(sc->rxq.data_dmat, data->map,
|
|
BUS_DMASYNC_POSTREAD);
|
|
desc = (void *)data->m->m_ext.ext_buf;
|
|
|
|
DPRINTFN(WPI_DEBUG_NOTIFY,
|
|
("notify qid=%x idx=%d flags=%x type=%d len=%d\n",
|
|
desc->qid,
|
|
desc->idx,
|
|
desc->flags,
|
|
desc->type,
|
|
le32toh(desc->len)));
|
|
|
|
if (!(desc->qid & 0x80)) /* reply to a command */
|
|
wpi_cmd_intr(sc, desc);
|
|
|
|
switch (desc->type) {
|
|
case WPI_RX_DONE:
|
|
/* a 802.11 frame was received */
|
|
wpi_rx_intr(sc, desc, data);
|
|
break;
|
|
|
|
case WPI_TX_DONE:
|
|
/* a 802.11 frame has been transmitted */
|
|
wpi_tx_intr(sc, desc);
|
|
break;
|
|
|
|
case WPI_UC_READY:
|
|
{
|
|
struct wpi_ucode_info *uc =
|
|
(struct wpi_ucode_info *)(desc + 1);
|
|
|
|
/* the microcontroller is ready */
|
|
DPRINTF(("microcode alive notification version %x "
|
|
"alive %x\n", le32toh(uc->version),
|
|
le32toh(uc->valid)));
|
|
|
|
if (le32toh(uc->valid) != 1) {
|
|
device_printf(sc->sc_dev,
|
|
"microcontroller initialization failed\n");
|
|
wpi_stop_locked(sc);
|
|
}
|
|
break;
|
|
}
|
|
case WPI_STATE_CHANGED:
|
|
{
|
|
uint32_t *status = (uint32_t *)(desc + 1);
|
|
|
|
/* enabled/disabled notification */
|
|
DPRINTF(("state changed to %x\n", le32toh(*status)));
|
|
|
|
if (le32toh(*status) & 1) {
|
|
device_printf(sc->sc_dev,
|
|
"Radio transmitter is switched off\n");
|
|
sc->flags |= WPI_FLAG_HW_RADIO_OFF;
|
|
ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
|
|
/* Disable firmware commands */
|
|
WPI_WRITE(sc, WPI_UCODE_SET, WPI_DISABLE_CMD);
|
|
}
|
|
break;
|
|
}
|
|
case WPI_START_SCAN:
|
|
{
|
|
#ifdef WPI_DEBUG
|
|
struct wpi_start_scan *scan =
|
|
(struct wpi_start_scan *)(desc + 1);
|
|
#endif
|
|
|
|
DPRINTFN(WPI_DEBUG_SCANNING,
|
|
("scanning channel %d status %x\n",
|
|
scan->chan, le32toh(scan->status)));
|
|
break;
|
|
}
|
|
case WPI_STOP_SCAN:
|
|
{
|
|
#ifdef WPI_DEBUG
|
|
struct wpi_stop_scan *scan =
|
|
(struct wpi_stop_scan *)(desc + 1);
|
|
#endif
|
|
struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
|
|
|
|
DPRINTFN(WPI_DEBUG_SCANNING,
|
|
("scan finished nchan=%d status=%d chan=%d\n",
|
|
scan->nchan, scan->status, scan->chan));
|
|
|
|
sc->sc_scan_timer = 0;
|
|
ieee80211_scan_next(vap);
|
|
break;
|
|
}
|
|
case WPI_MISSED_BEACON:
|
|
{
|
|
struct wpi_missed_beacon *beacon =
|
|
(struct wpi_missed_beacon *)(desc + 1);
|
|
struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
|
|
|
|
if (le32toh(beacon->consecutive) >=
|
|
vap->iv_bmissthreshold) {
|
|
DPRINTF(("Beacon miss: %u >= %u\n",
|
|
le32toh(beacon->consecutive),
|
|
vap->iv_bmissthreshold));
|
|
ieee80211_beacon_miss(ic);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
sc->rxq.cur = (sc->rxq.cur + 1) % WPI_RX_RING_COUNT;
|
|
}
|
|
|
|
/* tell the firmware what we have processed */
|
|
hw = (hw == 0) ? WPI_RX_RING_COUNT - 1 : hw - 1;
|
|
WPI_WRITE(sc, WPI_RX_WIDX, hw & ~7);
|
|
}
|
|
|
|
static void
|
|
wpi_intr(void *arg)
|
|
{
|
|
struct wpi_softc *sc = arg;
|
|
uint32_t r;
|
|
|
|
WPI_LOCK(sc);
|
|
|
|
r = WPI_READ(sc, WPI_INTR);
|
|
if (r == 0 || r == 0xffffffff) {
|
|
WPI_UNLOCK(sc);
|
|
return;
|
|
}
|
|
|
|
/* disable interrupts */
|
|
WPI_WRITE(sc, WPI_MASK, 0);
|
|
/* ack interrupts */
|
|
WPI_WRITE(sc, WPI_INTR, r);
|
|
|
|
if (r & (WPI_SW_ERROR | WPI_HW_ERROR)) {
|
|
struct ifnet *ifp = sc->sc_ifp;
|
|
struct ieee80211com *ic = ifp->if_l2com;
|
|
struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
|
|
|
|
device_printf(sc->sc_dev, "fatal firmware error\n");
|
|
DPRINTFN(6,("(%s)\n", (r & WPI_SW_ERROR) ? "(Software Error)" :
|
|
"(Hardware Error)"));
|
|
if (vap != NULL)
|
|
ieee80211_cancel_scan(vap);
|
|
ieee80211_runtask(ic, &sc->sc_restarttask);
|
|
sc->flags &= ~WPI_FLAG_BUSY;
|
|
WPI_UNLOCK(sc);
|
|
return;
|
|
}
|
|
|
|
if (r & WPI_RX_INTR)
|
|
wpi_notif_intr(sc);
|
|
|
|
if (r & WPI_ALIVE_INTR) /* firmware initialized */
|
|
wakeup(sc);
|
|
|
|
/* re-enable interrupts */
|
|
if (sc->sc_ifp->if_flags & IFF_UP)
|
|
WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK);
|
|
|
|
WPI_UNLOCK(sc);
|
|
}
|
|
|
|
static uint8_t
|
|
wpi_plcp_signal(int rate)
|
|
{
|
|
switch (rate) {
|
|
/* CCK rates (returned values are device-dependent) */
|
|
case 2: return 10;
|
|
case 4: return 20;
|
|
case 11: return 55;
|
|
case 22: return 110;
|
|
|
|
/* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */
|
|
/* R1-R4 (ral/ural is R4-R1) */
|
|
case 12: return 0xd;
|
|
case 18: return 0xf;
|
|
case 24: return 0x5;
|
|
case 36: return 0x7;
|
|
case 48: return 0x9;
|
|
case 72: return 0xb;
|
|
case 96: return 0x1;
|
|
case 108: return 0x3;
|
|
|
|
/* unsupported rates (should not get there) */
|
|
default: return 0;
|
|
}
|
|
}
|
|
|
|
/* quickly determine if a given rate is CCK or OFDM */
|
|
#define WPI_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22)
|
|
|
|
/*
|
|
* Construct the data packet for a transmit buffer and acutally put
|
|
* the buffer onto the transmit ring, kicking the card to process the
|
|
* the buffer.
|
|
*/
|
|
static int
|
|
wpi_tx_data(struct wpi_softc *sc, struct mbuf *m0, struct ieee80211_node *ni,
|
|
int ac)
|
|
{
|
|
struct ieee80211vap *vap = ni->ni_vap;
|
|
struct ifnet *ifp = sc->sc_ifp;
|
|
struct ieee80211com *ic = ifp->if_l2com;
|
|
const struct chanAccParams *cap = &ic->ic_wme.wme_chanParams;
|
|
struct wpi_tx_ring *ring = &sc->txq[ac];
|
|
struct wpi_tx_desc *desc;
|
|
struct wpi_tx_data *data;
|
|
struct wpi_tx_cmd *cmd;
|
|
struct wpi_cmd_data *tx;
|
|
struct ieee80211_frame *wh;
|
|
const struct ieee80211_txparam *tp;
|
|
struct ieee80211_key *k;
|
|
struct mbuf *mnew;
|
|
int i, error, nsegs, rate, hdrlen, ismcast;
|
|
bus_dma_segment_t segs[WPI_MAX_SCATTER];
|
|
|
|
desc = &ring->desc[ring->cur];
|
|
data = &ring->data[ring->cur];
|
|
|
|
wh = mtod(m0, struct ieee80211_frame *);
|
|
|
|
hdrlen = ieee80211_hdrsize(wh);
|
|
ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1);
|
|
|
|
if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) {
|
|
k = ieee80211_crypto_encap(ni, m0);
|
|
if (k == NULL) {
|
|
m_freem(m0);
|
|
return ENOBUFS;
|
|
}
|
|
/* packet header may have moved, reset our local pointer */
|
|
wh = mtod(m0, struct ieee80211_frame *);
|
|
}
|
|
|
|
cmd = &ring->cmd[ring->cur];
|
|
cmd->code = WPI_CMD_TX_DATA;
|
|
cmd->flags = 0;
|
|
cmd->qid = ring->qid;
|
|
cmd->idx = ring->cur;
|
|
|
|
tx = (struct wpi_cmd_data *)cmd->data;
|
|
tx->flags = htole32(WPI_TX_AUTO_SEQ);
|
|
tx->timeout = htole16(0);
|
|
tx->ofdm_mask = 0xff;
|
|
tx->cck_mask = 0x0f;
|
|
tx->lifetime = htole32(WPI_LIFETIME_INFINITE);
|
|
tx->id = ismcast ? WPI_ID_BROADCAST : WPI_ID_BSS;
|
|
tx->len = htole16(m0->m_pkthdr.len);
|
|
|
|
if (!ismcast) {
|
|
if ((ni->ni_flags & IEEE80211_NODE_QOS) == 0 ||
|
|
!cap->cap_wmeParams[ac].wmep_noackPolicy)
|
|
tx->flags |= htole32(WPI_TX_NEED_ACK);
|
|
if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > vap->iv_rtsthreshold) {
|
|
tx->flags |= htole32(WPI_TX_NEED_RTS|WPI_TX_FULL_TXOP);
|
|
tx->rts_ntries = 7;
|
|
}
|
|
}
|
|
/* pick a rate */
|
|
tp = &vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)];
|
|
if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == IEEE80211_FC0_TYPE_MGT) {
|
|
uint8_t subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK;
|
|
/* tell h/w to set timestamp in probe responses */
|
|
if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP)
|
|
tx->flags |= htole32(WPI_TX_INSERT_TSTAMP);
|
|
if (subtype == IEEE80211_FC0_SUBTYPE_ASSOC_REQ ||
|
|
subtype == IEEE80211_FC0_SUBTYPE_REASSOC_REQ)
|
|
tx->timeout = htole16(3);
|
|
else
|
|
tx->timeout = htole16(2);
|
|
rate = tp->mgmtrate;
|
|
} else if (ismcast) {
|
|
rate = tp->mcastrate;
|
|
} else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) {
|
|
rate = tp->ucastrate;
|
|
} else {
|
|
(void) ieee80211_ratectl_rate(ni, NULL, 0);
|
|
rate = ni->ni_txrate;
|
|
}
|
|
tx->rate = wpi_plcp_signal(rate);
|
|
|
|
/* be very persistant at sending frames out */
|
|
#if 0
|
|
tx->data_ntries = tp->maxretry;
|
|
#else
|
|
tx->data_ntries = 15; /* XXX way too high */
|
|
#endif
|
|
|
|
if (ieee80211_radiotap_active_vap(vap)) {
|
|
struct wpi_tx_radiotap_header *tap = &sc->sc_txtap;
|
|
tap->wt_flags = 0;
|
|
tap->wt_rate = rate;
|
|
tap->wt_hwqueue = ac;
|
|
if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED)
|
|
tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP;
|
|
|
|
ieee80211_radiotap_tx(vap, m0);
|
|
}
|
|
|
|
/* save and trim IEEE802.11 header */
|
|
m_copydata(m0, 0, hdrlen, (caddr_t)&tx->wh);
|
|
m_adj(m0, hdrlen);
|
|
|
|
error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, m0, segs,
|
|
&nsegs, BUS_DMA_NOWAIT);
|
|
if (error != 0 && error != EFBIG) {
|
|
device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
|
|
error);
|
|
m_freem(m0);
|
|
return error;
|
|
}
|
|
if (error != 0) {
|
|
/* XXX use m_collapse */
|
|
mnew = m_defrag(m0, M_NOWAIT);
|
|
if (mnew == NULL) {
|
|
device_printf(sc->sc_dev,
|
|
"could not defragment mbuf\n");
|
|
m_freem(m0);
|
|
return ENOBUFS;
|
|
}
|
|
m0 = mnew;
|
|
|
|
error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map,
|
|
m0, segs, &nsegs, BUS_DMA_NOWAIT);
|
|
if (error != 0) {
|
|
device_printf(sc->sc_dev,
|
|
"could not map mbuf (error %d)\n", error);
|
|
m_freem(m0);
|
|
return error;
|
|
}
|
|
}
|
|
|
|
data->m = m0;
|
|
data->ni = ni;
|
|
|
|
DPRINTFN(WPI_DEBUG_TX, ("sending data: qid=%d idx=%d len=%d nsegs=%d\n",
|
|
ring->qid, ring->cur, m0->m_pkthdr.len, nsegs));
|
|
|
|
/* first scatter/gather segment is used by the tx data command */
|
|
desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 |
|
|
(1 + nsegs) << 24);
|
|
desc->segs[0].addr = htole32(ring->cmd_dma.paddr +
|
|
ring->cur * sizeof (struct wpi_tx_cmd));
|
|
desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_data));
|
|
for (i = 1; i <= nsegs; i++) {
|
|
desc->segs[i].addr = htole32(segs[i - 1].ds_addr);
|
|
desc->segs[i].len = htole32(segs[i - 1].ds_len);
|
|
}
|
|
|
|
bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE);
|
|
bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map,
|
|
BUS_DMASYNC_PREWRITE);
|
|
|
|
ring->queued++;
|
|
|
|
/* kick ring */
|
|
ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT;
|
|
WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Process data waiting to be sent on the IFNET output queue
|
|
*/
|
|
static void
|
|
wpi_start(struct ifnet *ifp)
|
|
{
|
|
struct wpi_softc *sc = ifp->if_softc;
|
|
|
|
WPI_LOCK(sc);
|
|
wpi_start_locked(ifp);
|
|
WPI_UNLOCK(sc);
|
|
}
|
|
|
|
static void
|
|
wpi_start_locked(struct ifnet *ifp)
|
|
{
|
|
struct wpi_softc *sc = ifp->if_softc;
|
|
struct ieee80211_node *ni;
|
|
struct mbuf *m;
|
|
int ac;
|
|
|
|
WPI_LOCK_ASSERT(sc);
|
|
|
|
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
|
|
return;
|
|
|
|
for (;;) {
|
|
IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
|
|
if (m == NULL)
|
|
break;
|
|
ac = M_WME_GETAC(m);
|
|
if (sc->txq[ac].queued > sc->txq[ac].count - 8) {
|
|
/* there is no place left in this ring */
|
|
IFQ_DRV_PREPEND(&ifp->if_snd, m);
|
|
ifp->if_drv_flags |= IFF_DRV_OACTIVE;
|
|
break;
|
|
}
|
|
ni = (struct ieee80211_node *) m->m_pkthdr.rcvif;
|
|
if (wpi_tx_data(sc, m, ni, ac) != 0) {
|
|
ieee80211_free_node(ni);
|
|
if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
|
|
break;
|
|
}
|
|
sc->sc_tx_timer = 5;
|
|
}
|
|
}
|
|
|
|
static int
|
|
wpi_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
|
|
const struct ieee80211_bpf_params *params)
|
|
{
|
|
struct ieee80211com *ic = ni->ni_ic;
|
|
struct ifnet *ifp = ic->ic_ifp;
|
|
struct wpi_softc *sc = ifp->if_softc;
|
|
|
|
/* prevent management frames from being sent if we're not ready */
|
|
if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
|
|
m_freem(m);
|
|
ieee80211_free_node(ni);
|
|
return ENETDOWN;
|
|
}
|
|
WPI_LOCK(sc);
|
|
|
|
/* management frames go into ring 0 */
|
|
if (sc->txq[0].queued > sc->txq[0].count - 8) {
|
|
ifp->if_drv_flags |= IFF_DRV_OACTIVE;
|
|
m_freem(m);
|
|
WPI_UNLOCK(sc);
|
|
ieee80211_free_node(ni);
|
|
return ENOBUFS; /* XXX */
|
|
}
|
|
|
|
if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1);
|
|
if (wpi_tx_data(sc, m, ni, 0) != 0)
|
|
goto bad;
|
|
sc->sc_tx_timer = 5;
|
|
callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc);
|
|
|
|
WPI_UNLOCK(sc);
|
|
return 0;
|
|
bad:
|
|
if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
|
|
WPI_UNLOCK(sc);
|
|
ieee80211_free_node(ni);
|
|
return EIO; /* XXX */
|
|
}
|
|
|
|
static int
|
|
wpi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
|
|
{
|
|
struct wpi_softc *sc = ifp->if_softc;
|
|
struct ieee80211com *ic = ifp->if_l2com;
|
|
struct ifreq *ifr = (struct ifreq *) data;
|
|
int error = 0, startall = 0;
|
|
|
|
switch (cmd) {
|
|
case SIOCSIFFLAGS:
|
|
WPI_LOCK(sc);
|
|
if ((ifp->if_flags & IFF_UP)) {
|
|
if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
|
|
wpi_init_locked(sc, 0);
|
|
startall = 1;
|
|
}
|
|
} else if ((ifp->if_drv_flags & IFF_DRV_RUNNING) ||
|
|
(sc->flags & WPI_FLAG_HW_RADIO_OFF))
|
|
wpi_stop_locked(sc);
|
|
WPI_UNLOCK(sc);
|
|
if (startall)
|
|
ieee80211_start_all(ic);
|
|
break;
|
|
case SIOCGIFMEDIA:
|
|
error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd);
|
|
break;
|
|
case SIOCGIFADDR:
|
|
error = ether_ioctl(ifp, cmd, data);
|
|
break;
|
|
default:
|
|
error = EINVAL;
|
|
break;
|
|
}
|
|
return error;
|
|
}
|
|
|
|
/*
|
|
* Extract various information from EEPROM.
|
|
*/
|
|
static void
|
|
wpi_read_eeprom(struct wpi_softc *sc, uint8_t macaddr[IEEE80211_ADDR_LEN])
|
|
{
|
|
int i;
|
|
|
|
/* read the hardware capabilities, revision and SKU type */
|
|
wpi_read_prom_data(sc, WPI_EEPROM_CAPABILITIES, &sc->cap,1);
|
|
wpi_read_prom_data(sc, WPI_EEPROM_REVISION, &sc->rev,2);
|
|
wpi_read_prom_data(sc, WPI_EEPROM_TYPE, &sc->type, 1);
|
|
|
|
/* read the regulatory domain */
|
|
wpi_read_prom_data(sc, WPI_EEPROM_DOMAIN, sc->domain, 4);
|
|
|
|
/* read in the hw MAC address */
|
|
wpi_read_prom_data(sc, WPI_EEPROM_MAC, macaddr, 6);
|
|
|
|
/* read the list of authorized channels */
|
|
for (i = 0; i < WPI_CHAN_BANDS_COUNT; i++)
|
|
wpi_read_eeprom_channels(sc,i);
|
|
|
|
/* read the power level calibration info for each group */
|
|
for (i = 0; i < WPI_POWER_GROUPS_COUNT; i++)
|
|
wpi_read_eeprom_group(sc,i);
|
|
}
|
|
|
|
/*
|
|
* Send a command to the firmware.
|
|
*/
|
|
static int
|
|
wpi_cmd(struct wpi_softc *sc, int code, const void *buf, int size, int async)
|
|
{
|
|
struct wpi_tx_ring *ring = &sc->cmdq;
|
|
struct wpi_tx_desc *desc;
|
|
struct wpi_tx_cmd *cmd;
|
|
|
|
#ifdef WPI_DEBUG
|
|
if (!async) {
|
|
WPI_LOCK_ASSERT(sc);
|
|
}
|
|
#endif
|
|
|
|
DPRINTFN(WPI_DEBUG_CMD,("wpi_cmd %d size %d async %d\n", code, size,
|
|
async));
|
|
|
|
if (sc->flags & WPI_FLAG_BUSY) {
|
|
device_printf(sc->sc_dev, "%s: cmd %d not sent, busy\n",
|
|
__func__, code);
|
|
return EAGAIN;
|
|
}
|
|
sc->flags|= WPI_FLAG_BUSY;
|
|
|
|
KASSERT(size <= sizeof cmd->data, ("command %d too large: %d bytes",
|
|
code, size));
|
|
|
|
desc = &ring->desc[ring->cur];
|
|
cmd = &ring->cmd[ring->cur];
|
|
|
|
cmd->code = code;
|
|
cmd->flags = 0;
|
|
cmd->qid = ring->qid;
|
|
cmd->idx = ring->cur;
|
|
memcpy(cmd->data, buf, size);
|
|
|
|
desc->flags = htole32(WPI_PAD32(size) << 28 | 1 << 24);
|
|
desc->segs[0].addr = htole32(ring->cmd_dma.paddr +
|
|
ring->cur * sizeof (struct wpi_tx_cmd));
|
|
desc->segs[0].len = htole32(4 + size);
|
|
|
|
/* kick cmd ring */
|
|
ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT;
|
|
WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur);
|
|
|
|
if (async) {
|
|
sc->flags &= ~ WPI_FLAG_BUSY;
|
|
return 0;
|
|
}
|
|
|
|
return msleep(cmd, &sc->sc_mtx, PCATCH, "wpicmd", hz);
|
|
}
|
|
|
|
static int
|
|
wpi_wme_update(struct ieee80211com *ic)
|
|
{
|
|
#define WPI_EXP2(v) htole16((1 << (v)) - 1)
|
|
#define WPI_USEC(v) htole16(IEEE80211_TXOP_TO_US(v))
|
|
struct wpi_softc *sc = ic->ic_ifp->if_softc;
|
|
const struct wmeParams *wmep;
|
|
struct wpi_wme_setup wme;
|
|
int ac;
|
|
|
|
/* don't override default WME values if WME is not actually enabled */
|
|
if (!(ic->ic_flags & IEEE80211_F_WME))
|
|
return 0;
|
|
|
|
wme.flags = 0;
|
|
for (ac = 0; ac < WME_NUM_AC; ac++) {
|
|
wmep = &ic->ic_wme.wme_chanParams.cap_wmeParams[ac];
|
|
wme.ac[ac].aifsn = wmep->wmep_aifsn;
|
|
wme.ac[ac].cwmin = WPI_EXP2(wmep->wmep_logcwmin);
|
|
wme.ac[ac].cwmax = WPI_EXP2(wmep->wmep_logcwmax);
|
|
wme.ac[ac].txop = WPI_USEC(wmep->wmep_txopLimit);
|
|
|
|
DPRINTF(("setting WME for queue %d aifsn=%d cwmin=%d cwmax=%d "
|
|
"txop=%d\n", ac, wme.ac[ac].aifsn, wme.ac[ac].cwmin,
|
|
wme.ac[ac].cwmax, wme.ac[ac].txop));
|
|
}
|
|
return wpi_cmd(sc, WPI_CMD_SET_WME, &wme, sizeof wme, 1);
|
|
#undef WPI_USEC
|
|
#undef WPI_EXP2
|
|
}
|
|
|
|
/*
|
|
* Configure h/w multi-rate retries.
|
|
*/
|
|
static int
|
|
wpi_mrr_setup(struct wpi_softc *sc)
|
|
{
|
|
struct ifnet *ifp = sc->sc_ifp;
|
|
struct ieee80211com *ic = ifp->if_l2com;
|
|
struct wpi_mrr_setup mrr;
|
|
int i, error;
|
|
|
|
memset(&mrr, 0, sizeof (struct wpi_mrr_setup));
|
|
|
|
/* CCK rates (not used with 802.11a) */
|
|
for (i = WPI_CCK1; i <= WPI_CCK11; i++) {
|
|
mrr.rates[i].flags = 0;
|
|
mrr.rates[i].signal = wpi_ridx_to_plcp[i];
|
|
/* fallback to the immediate lower CCK rate (if any) */
|
|
mrr.rates[i].next = (i == WPI_CCK1) ? WPI_CCK1 : i - 1;
|
|
/* try one time at this rate before falling back to "next" */
|
|
mrr.rates[i].ntries = 1;
|
|
}
|
|
|
|
/* OFDM rates (not used with 802.11b) */
|
|
for (i = WPI_OFDM6; i <= WPI_OFDM54; i++) {
|
|
mrr.rates[i].flags = 0;
|
|
mrr.rates[i].signal = wpi_ridx_to_plcp[i];
|
|
/* fallback to the immediate lower OFDM rate (if any) */
|
|
/* we allow fallback from OFDM/6 to CCK/2 in 11b/g mode */
|
|
mrr.rates[i].next = (i == WPI_OFDM6) ?
|
|
((ic->ic_curmode == IEEE80211_MODE_11A) ?
|
|
WPI_OFDM6 : WPI_CCK2) :
|
|
i - 1;
|
|
/* try one time at this rate before falling back to "next" */
|
|
mrr.rates[i].ntries = 1;
|
|
}
|
|
|
|
/* setup MRR for control frames */
|
|
mrr.which = WPI_MRR_CTL;
|
|
error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0);
|
|
if (error != 0) {
|
|
device_printf(sc->sc_dev,
|
|
"could not setup MRR for control frames\n");
|
|
return error;
|
|
}
|
|
|
|
/* setup MRR for data frames */
|
|
mrr.which = WPI_MRR_DATA;
|
|
error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0);
|
|
if (error != 0) {
|
|
device_printf(sc->sc_dev,
|
|
"could not setup MRR for data frames\n");
|
|
return error;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
wpi_set_led(struct wpi_softc *sc, uint8_t which, uint8_t off, uint8_t on)
|
|
{
|
|
struct wpi_cmd_led led;
|
|
|
|
led.which = which;
|
|
led.unit = htole32(100000); /* on/off in unit of 100ms */
|
|
led.off = off;
|
|
led.on = on;
|
|
|
|
(void)wpi_cmd(sc, WPI_CMD_SET_LED, &led, sizeof led, 1);
|
|
}
|
|
|
|
static void
|
|
wpi_enable_tsf(struct wpi_softc *sc, struct ieee80211_node *ni)
|
|
{
|
|
struct wpi_cmd_tsf tsf;
|
|
uint64_t val, mod;
|
|
|
|
memset(&tsf, 0, sizeof tsf);
|
|
memcpy(&tsf.tstamp, ni->ni_tstamp.data, 8);
|
|
tsf.bintval = htole16(ni->ni_intval);
|
|
tsf.lintval = htole16(10);
|
|
|
|
/* compute remaining time until next beacon */
|
|
val = (uint64_t)ni->ni_intval * 1024; /* msec -> usec */
|
|
mod = le64toh(tsf.tstamp) % val;
|
|
tsf.binitval = htole32((uint32_t)(val - mod));
|
|
|
|
if (wpi_cmd(sc, WPI_CMD_TSF, &tsf, sizeof tsf, 1) != 0)
|
|
device_printf(sc->sc_dev, "could not enable TSF\n");
|
|
}
|
|
|
|
#if 0
|
|
/*
|
|
* Build a beacon frame that the firmware will broadcast periodically in
|
|
* IBSS or HostAP modes.
|
|
*/
|
|
static int
|
|
wpi_setup_beacon(struct wpi_softc *sc, struct ieee80211_node *ni)
|
|
{
|
|
struct ifnet *ifp = sc->sc_ifp;
|
|
struct ieee80211com *ic = ifp->if_l2com;
|
|
struct wpi_tx_ring *ring = &sc->cmdq;
|
|
struct wpi_tx_desc *desc;
|
|
struct wpi_tx_data *data;
|
|
struct wpi_tx_cmd *cmd;
|
|
struct wpi_cmd_beacon *bcn;
|
|
struct ieee80211_beacon_offsets bo;
|
|
struct mbuf *m0;
|
|
bus_addr_t physaddr;
|
|
int error;
|
|
|
|
desc = &ring->desc[ring->cur];
|
|
data = &ring->data[ring->cur];
|
|
|
|
m0 = ieee80211_beacon_alloc(ic, ni, &bo);
|
|
if (m0 == NULL) {
|
|
device_printf(sc->sc_dev, "could not allocate beacon frame\n");
|
|
return ENOMEM;
|
|
}
|
|
|
|
cmd = &ring->cmd[ring->cur];
|
|
cmd->code = WPI_CMD_SET_BEACON;
|
|
cmd->flags = 0;
|
|
cmd->qid = ring->qid;
|
|
cmd->idx = ring->cur;
|
|
|
|
bcn = (struct wpi_cmd_beacon *)cmd->data;
|
|
memset(bcn, 0, sizeof (struct wpi_cmd_beacon));
|
|
bcn->id = WPI_ID_BROADCAST;
|
|
bcn->ofdm_mask = 0xff;
|
|
bcn->cck_mask = 0x0f;
|
|
bcn->lifetime = htole32(WPI_LIFETIME_INFINITE);
|
|
bcn->len = htole16(m0->m_pkthdr.len);
|
|
bcn->rate = (ic->ic_curmode == IEEE80211_MODE_11A) ?
|
|
wpi_plcp_signal(12) : wpi_plcp_signal(2);
|
|
bcn->flags = htole32(WPI_TX_AUTO_SEQ | WPI_TX_INSERT_TSTAMP);
|
|
|
|
/* save and trim IEEE802.11 header */
|
|
m_copydata(m0, 0, sizeof (struct ieee80211_frame), (caddr_t)&bcn->wh);
|
|
m_adj(m0, sizeof (struct ieee80211_frame));
|
|
|
|
/* assume beacon frame is contiguous */
|
|
error = bus_dmamap_load(ring->data_dmat, data->map, mtod(m0, void *),
|
|
m0->m_pkthdr.len, wpi_dma_map_addr, &physaddr, 0);
|
|
if (error != 0) {
|
|
device_printf(sc->sc_dev, "could not map beacon\n");
|
|
m_freem(m0);
|
|
return error;
|
|
}
|
|
|
|
data->m = m0;
|
|
|
|
/* first scatter/gather segment is used by the beacon command */
|
|
desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 2 << 24);
|
|
desc->segs[0].addr = htole32(ring->cmd_dma.paddr +
|
|
ring->cur * sizeof (struct wpi_tx_cmd));
|
|
desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_beacon));
|
|
desc->segs[1].addr = htole32(physaddr);
|
|
desc->segs[1].len = htole32(m0->m_pkthdr.len);
|
|
|
|
/* kick cmd ring */
|
|
ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT;
|
|
WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur);
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static int
|
|
wpi_auth(struct wpi_softc *sc, struct ieee80211vap *vap)
|
|
{
|
|
struct ieee80211com *ic = vap->iv_ic;
|
|
struct ieee80211_node *ni = vap->iv_bss;
|
|
struct wpi_node_info node;
|
|
int error;
|
|
|
|
|
|
/* update adapter's configuration */
|
|
sc->config.associd = 0;
|
|
sc->config.filter &= ~htole32(WPI_FILTER_BSS);
|
|
IEEE80211_ADDR_COPY(sc->config.bssid, ni->ni_bssid);
|
|
sc->config.chan = ieee80211_chan2ieee(ic, ni->ni_chan);
|
|
if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) {
|
|
sc->config.flags |= htole32(WPI_CONFIG_AUTO |
|
|
WPI_CONFIG_24GHZ);
|
|
} else {
|
|
sc->config.flags &= ~htole32(WPI_CONFIG_AUTO |
|
|
WPI_CONFIG_24GHZ);
|
|
}
|
|
if (IEEE80211_IS_CHAN_A(ni->ni_chan)) {
|
|
sc->config.cck_mask = 0;
|
|
sc->config.ofdm_mask = 0x15;
|
|
} else if (IEEE80211_IS_CHAN_B(ni->ni_chan)) {
|
|
sc->config.cck_mask = 0x03;
|
|
sc->config.ofdm_mask = 0;
|
|
} else {
|
|
/* XXX assume 802.11b/g */
|
|
sc->config.cck_mask = 0x0f;
|
|
sc->config.ofdm_mask = 0x15;
|
|
}
|
|
|
|
DPRINTF(("config chan %d flags %x cck %x ofdm %x\n", sc->config.chan,
|
|
sc->config.flags, sc->config.cck_mask, sc->config.ofdm_mask));
|
|
error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config,
|
|
sizeof (struct wpi_config), 1);
|
|
if (error != 0) {
|
|
device_printf(sc->sc_dev, "could not configure\n");
|
|
return error;
|
|
}
|
|
|
|
/* configuration has changed, set Tx power accordingly */
|
|
if ((error = wpi_set_txpower(sc, ni->ni_chan, 1)) != 0) {
|
|
device_printf(sc->sc_dev, "could not set Tx power\n");
|
|
return error;
|
|
}
|
|
|
|
/* add default node */
|
|
memset(&node, 0, sizeof node);
|
|
IEEE80211_ADDR_COPY(node.bssid, ni->ni_bssid);
|
|
node.id = WPI_ID_BSS;
|
|
node.rate = (ic->ic_curmode == IEEE80211_MODE_11A) ?
|
|
wpi_plcp_signal(12) : wpi_plcp_signal(2);
|
|
node.action = htole32(WPI_ACTION_SET_RATE);
|
|
node.antenna = WPI_ANTENNA_BOTH;
|
|
error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1);
|
|
if (error != 0)
|
|
device_printf(sc->sc_dev, "could not add BSS node\n");
|
|
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
wpi_run(struct wpi_softc *sc, struct ieee80211vap *vap)
|
|
{
|
|
struct ieee80211com *ic = vap->iv_ic;
|
|
struct ieee80211_node *ni = vap->iv_bss;
|
|
int error;
|
|
|
|
if (vap->iv_opmode == IEEE80211_M_MONITOR) {
|
|
/* link LED blinks while monitoring */
|
|
wpi_set_led(sc, WPI_LED_LINK, 5, 5);
|
|
return 0;
|
|
}
|
|
|
|
wpi_enable_tsf(sc, ni);
|
|
|
|
/* update adapter's configuration */
|
|
sc->config.associd = htole16(ni->ni_associd & ~0xc000);
|
|
/* short preamble/slot time are negotiated when associating */
|
|
sc->config.flags &= ~htole32(WPI_CONFIG_SHPREAMBLE |
|
|
WPI_CONFIG_SHSLOT);
|
|
if (ic->ic_flags & IEEE80211_F_SHSLOT)
|
|
sc->config.flags |= htole32(WPI_CONFIG_SHSLOT);
|
|
if (ic->ic_flags & IEEE80211_F_SHPREAMBLE)
|
|
sc->config.flags |= htole32(WPI_CONFIG_SHPREAMBLE);
|
|
sc->config.filter |= htole32(WPI_FILTER_BSS);
|
|
|
|
/* XXX put somewhere HC_QOS_SUPPORT_ASSOC + HC_IBSS_START */
|
|
|
|
DPRINTF(("config chan %d flags %x\n", sc->config.chan,
|
|
sc->config.flags));
|
|
error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, sizeof (struct
|
|
wpi_config), 1);
|
|
if (error != 0) {
|
|
device_printf(sc->sc_dev, "could not update configuration\n");
|
|
return error;
|
|
}
|
|
|
|
error = wpi_set_txpower(sc, ni->ni_chan, 1);
|
|
if (error != 0) {
|
|
device_printf(sc->sc_dev, "could set txpower\n");
|
|
return error;
|
|
}
|
|
|
|
/* link LED always on while associated */
|
|
wpi_set_led(sc, WPI_LED_LINK, 0, 1);
|
|
|
|
/* start automatic rate control timer */
|
|
callout_reset(&sc->calib_to, 60*hz, wpi_calib_timeout, sc);
|
|
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Send a scan request to the firmware. Since this command is huge, we map it
|
|
* into a mbufcluster instead of using the pre-allocated set of commands. Note,
|
|
* much of this code is similar to that in wpi_cmd but because we must manually
|
|
* construct the probe & channels, we duplicate what's needed here. XXX In the
|
|
* future, this function should be modified to use wpi_cmd to help cleanup the
|
|
* code base.
|
|
*/
|
|
static int
|
|
wpi_scan(struct wpi_softc *sc)
|
|
{
|
|
struct ifnet *ifp = sc->sc_ifp;
|
|
struct ieee80211com *ic = ifp->if_l2com;
|
|
struct ieee80211_scan_state *ss = ic->ic_scan;
|
|
struct wpi_tx_ring *ring = &sc->cmdq;
|
|
struct wpi_tx_desc *desc;
|
|
struct wpi_tx_data *data;
|
|
struct wpi_tx_cmd *cmd;
|
|
struct wpi_scan_hdr *hdr;
|
|
struct wpi_scan_chan *chan;
|
|
struct ieee80211_frame *wh;
|
|
struct ieee80211_rateset *rs;
|
|
struct ieee80211_channel *c;
|
|
enum ieee80211_phymode mode;
|
|
uint8_t *frm;
|
|
int nrates, pktlen, error, i, nssid;
|
|
bus_addr_t physaddr;
|
|
|
|
desc = &ring->desc[ring->cur];
|
|
data = &ring->data[ring->cur];
|
|
|
|
data->m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
|
|
if (data->m == NULL) {
|
|
device_printf(sc->sc_dev,
|
|
"could not allocate mbuf for scan command\n");
|
|
return ENOMEM;
|
|
}
|
|
|
|
cmd = mtod(data->m, struct wpi_tx_cmd *);
|
|
cmd->code = WPI_CMD_SCAN;
|
|
cmd->flags = 0;
|
|
cmd->qid = ring->qid;
|
|
cmd->idx = ring->cur;
|
|
|
|
hdr = (struct wpi_scan_hdr *)cmd->data;
|
|
memset(hdr, 0, sizeof(struct wpi_scan_hdr));
|
|
|
|
/*
|
|
* Move to the next channel if no packets are received within 5 msecs
|
|
* after sending the probe request (this helps to reduce the duration
|
|
* of active scans).
|
|
*/
|
|
hdr->quiet = htole16(5);
|
|
hdr->threshold = htole16(1);
|
|
|
|
if (IEEE80211_IS_CHAN_A(ic->ic_curchan)) {
|
|
/* send probe requests at 6Mbps */
|
|
hdr->tx.rate = wpi_ridx_to_plcp[WPI_OFDM6];
|
|
|
|
/* Enable crc checking */
|
|
hdr->promotion = htole16(1);
|
|
} else {
|
|
hdr->flags = htole32(WPI_CONFIG_24GHZ | WPI_CONFIG_AUTO);
|
|
/* send probe requests at 1Mbps */
|
|
hdr->tx.rate = wpi_ridx_to_plcp[WPI_CCK1];
|
|
}
|
|
hdr->tx.id = WPI_ID_BROADCAST;
|
|
hdr->tx.lifetime = htole32(WPI_LIFETIME_INFINITE);
|
|
hdr->tx.flags = htole32(WPI_TX_AUTO_SEQ);
|
|
|
|
memset(hdr->scan_essids, 0, sizeof(hdr->scan_essids));
|
|
nssid = MIN(ss->ss_nssid, WPI_SCAN_MAX_ESSIDS);
|
|
for (i = 0; i < nssid; i++) {
|
|
hdr->scan_essids[i].id = IEEE80211_ELEMID_SSID;
|
|
hdr->scan_essids[i].esslen = MIN(ss->ss_ssid[i].len, 32);
|
|
memcpy(hdr->scan_essids[i].essid, ss->ss_ssid[i].ssid,
|
|
hdr->scan_essids[i].esslen);
|
|
#ifdef WPI_DEBUG
|
|
if (wpi_debug & WPI_DEBUG_SCANNING) {
|
|
printf("Scanning Essid: ");
|
|
ieee80211_print_essid(hdr->scan_essids[i].essid,
|
|
hdr->scan_essids[i].esslen);
|
|
printf("\n");
|
|
}
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* Build a probe request frame. Most of the following code is a
|
|
* copy & paste of what is done in net80211.
|
|
*/
|
|
wh = (struct ieee80211_frame *)&hdr->scan_essids[4];
|
|
wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT |
|
|
IEEE80211_FC0_SUBTYPE_PROBE_REQ;
|
|
wh->i_fc[1] = IEEE80211_FC1_DIR_NODS;
|
|
IEEE80211_ADDR_COPY(wh->i_addr1, ifp->if_broadcastaddr);
|
|
IEEE80211_ADDR_COPY(wh->i_addr2, IF_LLADDR(ifp));
|
|
IEEE80211_ADDR_COPY(wh->i_addr3, ifp->if_broadcastaddr);
|
|
*(u_int16_t *)&wh->i_dur[0] = 0; /* filled by h/w */
|
|
*(u_int16_t *)&wh->i_seq[0] = 0; /* filled by h/w */
|
|
|
|
frm = (uint8_t *)(wh + 1);
|
|
|
|
/* add essid IE, the hardware will fill this in for us */
|
|
*frm++ = IEEE80211_ELEMID_SSID;
|
|
*frm++ = 0;
|
|
|
|
mode = ieee80211_chan2mode(ic->ic_curchan);
|
|
rs = &ic->ic_sup_rates[mode];
|
|
|
|
/* add supported rates IE */
|
|
*frm++ = IEEE80211_ELEMID_RATES;
|
|
nrates = rs->rs_nrates;
|
|
if (nrates > IEEE80211_RATE_SIZE)
|
|
nrates = IEEE80211_RATE_SIZE;
|
|
*frm++ = nrates;
|
|
memcpy(frm, rs->rs_rates, nrates);
|
|
frm += nrates;
|
|
|
|
/* add supported xrates IE */
|
|
if (rs->rs_nrates > IEEE80211_RATE_SIZE) {
|
|
nrates = rs->rs_nrates - IEEE80211_RATE_SIZE;
|
|
*frm++ = IEEE80211_ELEMID_XRATES;
|
|
*frm++ = nrates;
|
|
memcpy(frm, rs->rs_rates + IEEE80211_RATE_SIZE, nrates);
|
|
frm += nrates;
|
|
}
|
|
|
|
/* setup length of probe request */
|
|
hdr->tx.len = htole16(frm - (uint8_t *)wh);
|
|
|
|
/*
|
|
* Construct information about the channel that we
|
|
* want to scan. The firmware expects this to be directly
|
|
* after the scan probe request
|
|
*/
|
|
c = ic->ic_curchan;
|
|
chan = (struct wpi_scan_chan *)frm;
|
|
chan->chan = ieee80211_chan2ieee(ic, c);
|
|
chan->flags = 0;
|
|
if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) {
|
|
chan->flags |= WPI_CHAN_ACTIVE;
|
|
if (nssid != 0)
|
|
chan->flags |= WPI_CHAN_DIRECT;
|
|
}
|
|
chan->gain_dsp = 0x6e; /* Default level */
|
|
if (IEEE80211_IS_CHAN_5GHZ(c)) {
|
|
chan->active = htole16(10);
|
|
chan->passive = htole16(ss->ss_maxdwell);
|
|
chan->gain_radio = 0x3b;
|
|
} else {
|
|
chan->active = htole16(20);
|
|
chan->passive = htole16(ss->ss_maxdwell);
|
|
chan->gain_radio = 0x28;
|
|
}
|
|
|
|
DPRINTFN(WPI_DEBUG_SCANNING,
|
|
("Scanning %u Passive: %d\n",
|
|
chan->chan,
|
|
c->ic_flags & IEEE80211_CHAN_PASSIVE));
|
|
|
|
hdr->nchan++;
|
|
chan++;
|
|
|
|
frm += sizeof (struct wpi_scan_chan);
|
|
#if 0
|
|
// XXX All Channels....
|
|
for (c = &ic->ic_channels[1];
|
|
c <= &ic->ic_channels[IEEE80211_CHAN_MAX]; c++) {
|
|
if ((c->ic_flags & ic->ic_curchan->ic_flags) != ic->ic_curchan->ic_flags)
|
|
continue;
|
|
|
|
chan->chan = ieee80211_chan2ieee(ic, c);
|
|
chan->flags = 0;
|
|
if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) {
|
|
chan->flags |= WPI_CHAN_ACTIVE;
|
|
if (ic->ic_des_ssid[0].len != 0)
|
|
chan->flags |= WPI_CHAN_DIRECT;
|
|
}
|
|
chan->gain_dsp = 0x6e; /* Default level */
|
|
if (IEEE80211_IS_CHAN_5GHZ(c)) {
|
|
chan->active = htole16(10);
|
|
chan->passive = htole16(110);
|
|
chan->gain_radio = 0x3b;
|
|
} else {
|
|
chan->active = htole16(20);
|
|
chan->passive = htole16(120);
|
|
chan->gain_radio = 0x28;
|
|
}
|
|
|
|
DPRINTFN(WPI_DEBUG_SCANNING,
|
|
("Scanning %u Passive: %d\n",
|
|
chan->chan,
|
|
c->ic_flags & IEEE80211_CHAN_PASSIVE));
|
|
|
|
hdr->nchan++;
|
|
chan++;
|
|
|
|
frm += sizeof (struct wpi_scan_chan);
|
|
}
|
|
#endif
|
|
|
|
hdr->len = htole16(frm - (uint8_t *)hdr);
|
|
pktlen = frm - (uint8_t *)cmd;
|
|
|
|
error = bus_dmamap_load(ring->data_dmat, data->map, cmd, pktlen,
|
|
wpi_dma_map_addr, &physaddr, BUS_DMA_NOWAIT);
|
|
if (error != 0) {
|
|
device_printf(sc->sc_dev, "could not map scan command\n");
|
|
m_freem(data->m);
|
|
data->m = NULL;
|
|
return error;
|
|
}
|
|
|
|
desc->flags = htole32(WPI_PAD32(pktlen) << 28 | 1 << 24);
|
|
desc->segs[0].addr = htole32(physaddr);
|
|
desc->segs[0].len = htole32(pktlen);
|
|
|
|
bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map,
|
|
BUS_DMASYNC_PREWRITE);
|
|
bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE);
|
|
|
|
/* kick cmd ring */
|
|
ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT;
|
|
WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur);
|
|
|
|
sc->sc_scan_timer = 5;
|
|
return 0; /* will be notified async. of failure/success */
|
|
}
|
|
|
|
/**
|
|
* Configure the card to listen to a particular channel, this transisions the
|
|
* card in to being able to receive frames from remote devices.
|
|
*/
|
|
static int
|
|
wpi_config(struct wpi_softc *sc)
|
|
{
|
|
struct ifnet *ifp = sc->sc_ifp;
|
|
struct ieee80211com *ic = ifp->if_l2com;
|
|
struct wpi_power power;
|
|
struct wpi_bluetooth bluetooth;
|
|
struct wpi_node_info node;
|
|
int error;
|
|
|
|
/* set power mode */
|
|
memset(&power, 0, sizeof power);
|
|
power.flags = htole32(WPI_POWER_CAM|0x8);
|
|
error = wpi_cmd(sc, WPI_CMD_SET_POWER_MODE, &power, sizeof power, 0);
|
|
if (error != 0) {
|
|
device_printf(sc->sc_dev, "could not set power mode\n");
|
|
return error;
|
|
}
|
|
|
|
/* configure bluetooth coexistence */
|
|
memset(&bluetooth, 0, sizeof bluetooth);
|
|
bluetooth.flags = 3;
|
|
bluetooth.lead = 0xaa;
|
|
bluetooth.kill = 1;
|
|
error = wpi_cmd(sc, WPI_CMD_BLUETOOTH, &bluetooth, sizeof bluetooth,
|
|
0);
|
|
if (error != 0) {
|
|
device_printf(sc->sc_dev,
|
|
"could not configure bluetooth coexistence\n");
|
|
return error;
|
|
}
|
|
|
|
/* configure adapter */
|
|
memset(&sc->config, 0, sizeof (struct wpi_config));
|
|
IEEE80211_ADDR_COPY(sc->config.myaddr, IF_LLADDR(ifp));
|
|
/*set default channel*/
|
|
sc->config.chan = htole16(ieee80211_chan2ieee(ic, ic->ic_curchan));
|
|
sc->config.flags = htole32(WPI_CONFIG_TSF);
|
|
if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) {
|
|
sc->config.flags |= htole32(WPI_CONFIG_AUTO |
|
|
WPI_CONFIG_24GHZ);
|
|
}
|
|
sc->config.filter = 0;
|
|
switch (ic->ic_opmode) {
|
|
case IEEE80211_M_STA:
|
|
case IEEE80211_M_WDS: /* No know setup, use STA for now */
|
|
sc->config.mode = WPI_MODE_STA;
|
|
sc->config.filter |= htole32(WPI_FILTER_MULTICAST);
|
|
break;
|
|
case IEEE80211_M_IBSS:
|
|
case IEEE80211_M_AHDEMO:
|
|
sc->config.mode = WPI_MODE_IBSS;
|
|
sc->config.filter |= htole32(WPI_FILTER_BEACON |
|
|
WPI_FILTER_MULTICAST);
|
|
break;
|
|
case IEEE80211_M_HOSTAP:
|
|
sc->config.mode = WPI_MODE_HOSTAP;
|
|
break;
|
|
case IEEE80211_M_MONITOR:
|
|
sc->config.mode = WPI_MODE_MONITOR;
|
|
sc->config.filter |= htole32(WPI_FILTER_MULTICAST |
|
|
WPI_FILTER_CTL | WPI_FILTER_PROMISC);
|
|
break;
|
|
default:
|
|
device_printf(sc->sc_dev, "unknown opmode %d\n", ic->ic_opmode);
|
|
return EINVAL;
|
|
}
|
|
sc->config.cck_mask = 0x0f; /* not yet negotiated */
|
|
sc->config.ofdm_mask = 0xff; /* not yet negotiated */
|
|
error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config,
|
|
sizeof (struct wpi_config), 0);
|
|
if (error != 0) {
|
|
device_printf(sc->sc_dev, "configure command failed\n");
|
|
return error;
|
|
}
|
|
|
|
/* configuration has changed, set Tx power accordingly */
|
|
if ((error = wpi_set_txpower(sc, ic->ic_curchan, 0)) != 0) {
|
|
device_printf(sc->sc_dev, "could not set Tx power\n");
|
|
return error;
|
|
}
|
|
|
|
/* add broadcast node */
|
|
memset(&node, 0, sizeof node);
|
|
IEEE80211_ADDR_COPY(node.bssid, ifp->if_broadcastaddr);
|
|
node.id = WPI_ID_BROADCAST;
|
|
node.rate = wpi_plcp_signal(2);
|
|
error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 0);
|
|
if (error != 0) {
|
|
device_printf(sc->sc_dev, "could not add broadcast node\n");
|
|
return error;
|
|
}
|
|
|
|
/* Setup rate scalling */
|
|
error = wpi_mrr_setup(sc);
|
|
if (error != 0) {
|
|
device_printf(sc->sc_dev, "could not setup MRR\n");
|
|
return error;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
wpi_stop_master(struct wpi_softc *sc)
|
|
{
|
|
uint32_t tmp;
|
|
int ntries;
|
|
|
|
DPRINTFN(WPI_DEBUG_HW,("Disabling Firmware execution\n"));
|
|
|
|
tmp = WPI_READ(sc, WPI_RESET);
|
|
WPI_WRITE(sc, WPI_RESET, tmp | WPI_STOP_MASTER | WPI_NEVO_RESET);
|
|
|
|
tmp = WPI_READ(sc, WPI_GPIO_CTL);
|
|
if ((tmp & WPI_GPIO_PWR_STATUS) == WPI_GPIO_PWR_SLEEP)
|
|
return; /* already asleep */
|
|
|
|
for (ntries = 0; ntries < 100; ntries++) {
|
|
if (WPI_READ(sc, WPI_RESET) & WPI_MASTER_DISABLED)
|
|
break;
|
|
DELAY(10);
|
|
}
|
|
if (ntries == 100) {
|
|
device_printf(sc->sc_dev, "timeout waiting for master\n");
|
|
}
|
|
}
|
|
|
|
static int
|
|
wpi_power_up(struct wpi_softc *sc)
|
|
{
|
|
uint32_t tmp;
|
|
int ntries;
|
|
|
|
wpi_mem_lock(sc);
|
|
tmp = wpi_mem_read(sc, WPI_MEM_POWER);
|
|
wpi_mem_write(sc, WPI_MEM_POWER, tmp & ~0x03000000);
|
|
wpi_mem_unlock(sc);
|
|
|
|
for (ntries = 0; ntries < 5000; ntries++) {
|
|
if (WPI_READ(sc, WPI_GPIO_STATUS) & WPI_POWERED)
|
|
break;
|
|
DELAY(10);
|
|
}
|
|
if (ntries == 5000) {
|
|
device_printf(sc->sc_dev,
|
|
"timeout waiting for NIC to power up\n");
|
|
return ETIMEDOUT;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
wpi_reset(struct wpi_softc *sc)
|
|
{
|
|
uint32_t tmp;
|
|
int ntries;
|
|
|
|
DPRINTFN(WPI_DEBUG_HW,
|
|
("Resetting the card - clearing any uploaded firmware\n"));
|
|
|
|
/* clear any pending interrupts */
|
|
WPI_WRITE(sc, WPI_INTR, 0xffffffff);
|
|
|
|
tmp = WPI_READ(sc, WPI_PLL_CTL);
|
|
WPI_WRITE(sc, WPI_PLL_CTL, tmp | WPI_PLL_INIT);
|
|
|
|
tmp = WPI_READ(sc, WPI_CHICKEN);
|
|
WPI_WRITE(sc, WPI_CHICKEN, tmp | WPI_CHICKEN_RXNOLOS);
|
|
|
|
tmp = WPI_READ(sc, WPI_GPIO_CTL);
|
|
WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_INIT);
|
|
|
|
/* wait for clock stabilization */
|
|
for (ntries = 0; ntries < 25000; ntries++) {
|
|
if (WPI_READ(sc, WPI_GPIO_CTL) & WPI_GPIO_CLOCK)
|
|
break;
|
|
DELAY(10);
|
|
}
|
|
if (ntries == 25000) {
|
|
device_printf(sc->sc_dev,
|
|
"timeout waiting for clock stabilization\n");
|
|
return ETIMEDOUT;
|
|
}
|
|
|
|
/* initialize EEPROM */
|
|
tmp = WPI_READ(sc, WPI_EEPROM_STATUS);
|
|
|
|
if ((tmp & WPI_EEPROM_VERSION) == 0) {
|
|
device_printf(sc->sc_dev, "EEPROM not found\n");
|
|
return EIO;
|
|
}
|
|
WPI_WRITE(sc, WPI_EEPROM_STATUS, tmp & ~WPI_EEPROM_LOCKED);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
wpi_hw_config(struct wpi_softc *sc)
|
|
{
|
|
uint32_t rev, hw;
|
|
|
|
/* voodoo from the Linux "driver".. */
|
|
hw = WPI_READ(sc, WPI_HWCONFIG);
|
|
|
|
rev = pci_read_config(sc->sc_dev, PCIR_REVID, 1);
|
|
if ((rev & 0xc0) == 0x40)
|
|
hw |= WPI_HW_ALM_MB;
|
|
else if (!(rev & 0x80))
|
|
hw |= WPI_HW_ALM_MM;
|
|
|
|
if (sc->cap == 0x80)
|
|
hw |= WPI_HW_SKU_MRC;
|
|
|
|
hw &= ~WPI_HW_REV_D;
|
|
if ((le16toh(sc->rev) & 0xf0) == 0xd0)
|
|
hw |= WPI_HW_REV_D;
|
|
|
|
if (sc->type > 1)
|
|
hw |= WPI_HW_TYPE_B;
|
|
|
|
WPI_WRITE(sc, WPI_HWCONFIG, hw);
|
|
}
|
|
|
|
static void
|
|
wpi_rfkill_resume(struct wpi_softc *sc)
|
|
{
|
|
struct ifnet *ifp = sc->sc_ifp;
|
|
struct ieee80211com *ic = ifp->if_l2com;
|
|
struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
|
|
int ntries;
|
|
|
|
/* enable firmware again */
|
|
WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF);
|
|
WPI_WRITE(sc, WPI_UCODE_CLR, WPI_DISABLE_CMD);
|
|
|
|
/* wait for thermal sensors to calibrate */
|
|
for (ntries = 0; ntries < 1000; ntries++) {
|
|
if ((sc->temp = (int)WPI_READ(sc, WPI_TEMPERATURE)) != 0)
|
|
break;
|
|
DELAY(10);
|
|
}
|
|
|
|
if (ntries == 1000) {
|
|
device_printf(sc->sc_dev,
|
|
"timeout waiting for thermal calibration\n");
|
|
return;
|
|
}
|
|
DPRINTFN(WPI_DEBUG_TEMP,("temperature %d\n", sc->temp));
|
|
|
|
if (wpi_config(sc) != 0) {
|
|
device_printf(sc->sc_dev, "device config failed\n");
|
|
return;
|
|
}
|
|
|
|
ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
|
|
ifp->if_drv_flags |= IFF_DRV_RUNNING;
|
|
sc->flags &= ~WPI_FLAG_HW_RADIO_OFF;
|
|
|
|
if (vap != NULL) {
|
|
if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) {
|
|
if (vap->iv_opmode != IEEE80211_M_MONITOR) {
|
|
ieee80211_beacon_miss(ic);
|
|
wpi_set_led(sc, WPI_LED_LINK, 0, 1);
|
|
} else
|
|
wpi_set_led(sc, WPI_LED_LINK, 5, 5);
|
|
} else {
|
|
ieee80211_scan_next(vap);
|
|
wpi_set_led(sc, WPI_LED_LINK, 20, 2);
|
|
}
|
|
}
|
|
|
|
callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc);
|
|
}
|
|
|
|
static void
|
|
wpi_init_locked(struct wpi_softc *sc, int force)
|
|
{
|
|
struct ifnet *ifp = sc->sc_ifp;
|
|
uint32_t tmp;
|
|
int ntries, qid;
|
|
|
|
wpi_stop_locked(sc);
|
|
(void)wpi_reset(sc);
|
|
|
|
wpi_mem_lock(sc);
|
|
wpi_mem_write(sc, WPI_MEM_CLOCK1, 0xa00);
|
|
DELAY(20);
|
|
tmp = wpi_mem_read(sc, WPI_MEM_PCIDEV);
|
|
wpi_mem_write(sc, WPI_MEM_PCIDEV, tmp | 0x800);
|
|
wpi_mem_unlock(sc);
|
|
|
|
(void)wpi_power_up(sc);
|
|
wpi_hw_config(sc);
|
|
|
|
/* init Rx ring */
|
|
wpi_mem_lock(sc);
|
|
WPI_WRITE(sc, WPI_RX_BASE, sc->rxq.desc_dma.paddr);
|
|
WPI_WRITE(sc, WPI_RX_RIDX_PTR, sc->shared_dma.paddr +
|
|
offsetof(struct wpi_shared, next));
|
|
WPI_WRITE(sc, WPI_RX_WIDX, (WPI_RX_RING_COUNT - 1) & ~7);
|
|
WPI_WRITE(sc, WPI_RX_CONFIG, 0xa9601010);
|
|
wpi_mem_unlock(sc);
|
|
|
|
/* init Tx rings */
|
|
wpi_mem_lock(sc);
|
|
wpi_mem_write(sc, WPI_MEM_MODE, 2); /* bypass mode */
|
|
wpi_mem_write(sc, WPI_MEM_RA, 1); /* enable RA0 */
|
|
wpi_mem_write(sc, WPI_MEM_TXCFG, 0x3f); /* enable all 6 Tx rings */
|
|
wpi_mem_write(sc, WPI_MEM_BYPASS1, 0x10000);
|
|
wpi_mem_write(sc, WPI_MEM_BYPASS2, 0x30002);
|
|
wpi_mem_write(sc, WPI_MEM_MAGIC4, 4);
|
|
wpi_mem_write(sc, WPI_MEM_MAGIC5, 5);
|
|
|
|
WPI_WRITE(sc, WPI_TX_BASE_PTR, sc->shared_dma.paddr);
|
|
WPI_WRITE(sc, WPI_MSG_CONFIG, 0xffff05a5);
|
|
|
|
for (qid = 0; qid < 6; qid++) {
|
|
WPI_WRITE(sc, WPI_TX_CTL(qid), 0);
|
|
WPI_WRITE(sc, WPI_TX_BASE(qid), 0);
|
|
WPI_WRITE(sc, WPI_TX_CONFIG(qid), 0x80200008);
|
|
}
|
|
wpi_mem_unlock(sc);
|
|
|
|
/* clear "radio off" and "disable command" bits (reversed logic) */
|
|
WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF);
|
|
WPI_WRITE(sc, WPI_UCODE_CLR, WPI_DISABLE_CMD);
|
|
sc->flags &= ~WPI_FLAG_HW_RADIO_OFF;
|
|
|
|
/* clear any pending interrupts */
|
|
WPI_WRITE(sc, WPI_INTR, 0xffffffff);
|
|
|
|
/* enable interrupts */
|
|
WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK);
|
|
|
|
WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF);
|
|
WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF);
|
|
|
|
if ((wpi_load_firmware(sc)) != 0) {
|
|
device_printf(sc->sc_dev,
|
|
"A problem occurred loading the firmware to the driver\n");
|
|
return;
|
|
}
|
|
|
|
/* At this point the firmware is up and running. If the hardware
|
|
* RF switch is turned off thermal calibration will fail, though
|
|
* the card is still happy to continue to accept commands, catch
|
|
* this case and schedule a task to watch for it to be turned on.
|
|
*/
|
|
wpi_mem_lock(sc);
|
|
tmp = wpi_mem_read(sc, WPI_MEM_HW_RADIO_OFF);
|
|
wpi_mem_unlock(sc);
|
|
|
|
if (!(tmp & 0x1)) {
|
|
sc->flags |= WPI_FLAG_HW_RADIO_OFF;
|
|
device_printf(sc->sc_dev,"Radio Transmitter is switched off\n");
|
|
goto out;
|
|
}
|
|
|
|
/* wait for thermal sensors to calibrate */
|
|
for (ntries = 0; ntries < 1000; ntries++) {
|
|
if ((sc->temp = (int)WPI_READ(sc, WPI_TEMPERATURE)) != 0)
|
|
break;
|
|
DELAY(10);
|
|
}
|
|
|
|
if (ntries == 1000) {
|
|
device_printf(sc->sc_dev,
|
|
"timeout waiting for thermal sensors calibration\n");
|
|
return;
|
|
}
|
|
DPRINTFN(WPI_DEBUG_TEMP,("temperature %d\n", sc->temp));
|
|
|
|
if (wpi_config(sc) != 0) {
|
|
device_printf(sc->sc_dev, "device config failed\n");
|
|
return;
|
|
}
|
|
|
|
ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
|
|
ifp->if_drv_flags |= IFF_DRV_RUNNING;
|
|
out:
|
|
callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc);
|
|
}
|
|
|
|
static void
|
|
wpi_init(void *arg)
|
|
{
|
|
struct wpi_softc *sc = arg;
|
|
struct ifnet *ifp = sc->sc_ifp;
|
|
struct ieee80211com *ic = ifp->if_l2com;
|
|
|
|
WPI_LOCK(sc);
|
|
wpi_init_locked(sc, 0);
|
|
WPI_UNLOCK(sc);
|
|
|
|
if (ifp->if_drv_flags & IFF_DRV_RUNNING)
|
|
ieee80211_start_all(ic); /* start all vaps */
|
|
}
|
|
|
|
static void
|
|
wpi_stop_locked(struct wpi_softc *sc)
|
|
{
|
|
struct ifnet *ifp = sc->sc_ifp;
|
|
uint32_t tmp;
|
|
int ac;
|
|
|
|
sc->sc_tx_timer = 0;
|
|
sc->sc_scan_timer = 0;
|
|
ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
|
|
sc->flags &= ~WPI_FLAG_HW_RADIO_OFF;
|
|
callout_stop(&sc->watchdog_to);
|
|
callout_stop(&sc->calib_to);
|
|
|
|
/* disable interrupts */
|
|
WPI_WRITE(sc, WPI_MASK, 0);
|
|
WPI_WRITE(sc, WPI_INTR, WPI_INTR_MASK);
|
|
WPI_WRITE(sc, WPI_INTR_STATUS, 0xff);
|
|
WPI_WRITE(sc, WPI_INTR_STATUS, 0x00070000);
|
|
|
|
wpi_mem_lock(sc);
|
|
wpi_mem_write(sc, WPI_MEM_MODE, 0);
|
|
wpi_mem_unlock(sc);
|
|
|
|
/* reset all Tx rings */
|
|
for (ac = 0; ac < 4; ac++)
|
|
wpi_reset_tx_ring(sc, &sc->txq[ac]);
|
|
wpi_reset_tx_ring(sc, &sc->cmdq);
|
|
|
|
/* reset Rx ring */
|
|
wpi_reset_rx_ring(sc, &sc->rxq);
|
|
|
|
wpi_mem_lock(sc);
|
|
wpi_mem_write(sc, WPI_MEM_CLOCK2, 0x200);
|
|
wpi_mem_unlock(sc);
|
|
|
|
DELAY(5);
|
|
|
|
wpi_stop_master(sc);
|
|
|
|
tmp = WPI_READ(sc, WPI_RESET);
|
|
WPI_WRITE(sc, WPI_RESET, tmp | WPI_SW_RESET);
|
|
sc->flags &= ~WPI_FLAG_BUSY;
|
|
}
|
|
|
|
static void
|
|
wpi_stop(struct wpi_softc *sc)
|
|
{
|
|
WPI_LOCK(sc);
|
|
wpi_stop_locked(sc);
|
|
WPI_UNLOCK(sc);
|
|
}
|
|
|
|
static void
|
|
wpi_calib_timeout(void *arg)
|
|
{
|
|
struct wpi_softc *sc = arg;
|
|
struct ifnet *ifp = sc->sc_ifp;
|
|
struct ieee80211com *ic = ifp->if_l2com;
|
|
struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
|
|
int temp;
|
|
|
|
if (vap->iv_state != IEEE80211_S_RUN)
|
|
return;
|
|
|
|
/* update sensor data */
|
|
temp = (int)WPI_READ(sc, WPI_TEMPERATURE);
|
|
DPRINTFN(WPI_DEBUG_TEMP,("Temp in calibration is: %d\n", temp));
|
|
|
|
wpi_power_calibration(sc, temp);
|
|
|
|
callout_reset(&sc->calib_to, 60*hz, wpi_calib_timeout, sc);
|
|
}
|
|
|
|
/*
|
|
* This function is called periodically (every 60 seconds) to adjust output
|
|
* power to temperature changes.
|
|
*/
|
|
static void
|
|
wpi_power_calibration(struct wpi_softc *sc, int temp)
|
|
{
|
|
struct ifnet *ifp = sc->sc_ifp;
|
|
struct ieee80211com *ic = ifp->if_l2com;
|
|
struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
|
|
|
|
/* sanity-check read value */
|
|
if (temp < -260 || temp > 25) {
|
|
/* this can't be correct, ignore */
|
|
DPRINTFN(WPI_DEBUG_TEMP,
|
|
("out-of-range temperature reported: %d\n", temp));
|
|
return;
|
|
}
|
|
|
|
DPRINTFN(WPI_DEBUG_TEMP,("temperature %d->%d\n", sc->temp, temp));
|
|
|
|
/* adjust Tx power if need be */
|
|
if (abs(temp - sc->temp) <= 6)
|
|
return;
|
|
|
|
sc->temp = temp;
|
|
|
|
if (wpi_set_txpower(sc, vap->iv_bss->ni_chan, 1) != 0) {
|
|
/* just warn, too bad for the automatic calibration... */
|
|
device_printf(sc->sc_dev,"could not adjust Tx power\n");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Read the eeprom to find out what channels are valid for the given
|
|
* band and update net80211 with what we find.
|
|
*/
|
|
static void
|
|
wpi_read_eeprom_channels(struct wpi_softc *sc, int n)
|
|
{
|
|
struct ifnet *ifp = sc->sc_ifp;
|
|
struct ieee80211com *ic = ifp->if_l2com;
|
|
const struct wpi_chan_band *band = &wpi_bands[n];
|
|
struct wpi_eeprom_chan channels[WPI_MAX_CHAN_PER_BAND];
|
|
struct ieee80211_channel *c;
|
|
int chan, i, passive;
|
|
|
|
wpi_read_prom_data(sc, band->addr, channels,
|
|
band->nchan * sizeof (struct wpi_eeprom_chan));
|
|
|
|
for (i = 0; i < band->nchan; i++) {
|
|
if (!(channels[i].flags & WPI_EEPROM_CHAN_VALID)) {
|
|
DPRINTFN(WPI_DEBUG_HW,
|
|
("Channel Not Valid: %d, band %d\n",
|
|
band->chan[i],n));
|
|
continue;
|
|
}
|
|
|
|
passive = 0;
|
|
chan = band->chan[i];
|
|
c = &ic->ic_channels[ic->ic_nchans++];
|
|
|
|
/* is active scan allowed on this channel? */
|
|
if (!(channels[i].flags & WPI_EEPROM_CHAN_ACTIVE)) {
|
|
passive = IEEE80211_CHAN_PASSIVE;
|
|
}
|
|
|
|
if (n == 0) { /* 2GHz band */
|
|
c->ic_ieee = chan;
|
|
c->ic_freq = ieee80211_ieee2mhz(chan,
|
|
IEEE80211_CHAN_2GHZ);
|
|
c->ic_flags = IEEE80211_CHAN_B | passive;
|
|
|
|
c = &ic->ic_channels[ic->ic_nchans++];
|
|
c->ic_ieee = chan;
|
|
c->ic_freq = ieee80211_ieee2mhz(chan,
|
|
IEEE80211_CHAN_2GHZ);
|
|
c->ic_flags = IEEE80211_CHAN_G | passive;
|
|
|
|
} else { /* 5GHz band */
|
|
/*
|
|
* Some 3945ABG adapters support channels 7, 8, 11
|
|
* and 12 in the 2GHz *and* 5GHz bands.
|
|
* Because of limitations in our net80211(9) stack,
|
|
* we can't support these channels in 5GHz band.
|
|
* XXX not true; just need to map to proper frequency
|
|
*/
|
|
if (chan <= 14)
|
|
continue;
|
|
|
|
c->ic_ieee = chan;
|
|
c->ic_freq = ieee80211_ieee2mhz(chan,
|
|
IEEE80211_CHAN_5GHZ);
|
|
c->ic_flags = IEEE80211_CHAN_A | passive;
|
|
}
|
|
|
|
/* save maximum allowed power for this channel */
|
|
sc->maxpwr[chan] = channels[i].maxpwr;
|
|
|
|
#if 0
|
|
// XXX We can probably use this an get rid of maxpwr - ben 20070617
|
|
ic->ic_channels[chan].ic_maxpower = channels[i].maxpwr;
|
|
//ic->ic_channels[chan].ic_minpower...
|
|
//ic->ic_channels[chan].ic_maxregtxpower...
|
|
#endif
|
|
|
|
DPRINTF(("adding chan %d (%dMHz) flags=0x%x maxpwr=%d"
|
|
" passive=%d, offset %d\n", chan, c->ic_freq,
|
|
channels[i].flags, sc->maxpwr[chan],
|
|
(c->ic_flags & IEEE80211_CHAN_PASSIVE) != 0,
|
|
ic->ic_nchans));
|
|
}
|
|
}
|
|
|
|
static void
|
|
wpi_read_eeprom_group(struct wpi_softc *sc, int n)
|
|
{
|
|
struct wpi_power_group *group = &sc->groups[n];
|
|
struct wpi_eeprom_group rgroup;
|
|
int i;
|
|
|
|
wpi_read_prom_data(sc, WPI_EEPROM_POWER_GRP + n * 32, &rgroup,
|
|
sizeof rgroup);
|
|
|
|
/* save power group information */
|
|
group->chan = rgroup.chan;
|
|
group->maxpwr = rgroup.maxpwr;
|
|
/* temperature at which the samples were taken */
|
|
group->temp = (int16_t)le16toh(rgroup.temp);
|
|
|
|
DPRINTF(("power group %d: chan=%d maxpwr=%d temp=%d\n", n,
|
|
group->chan, group->maxpwr, group->temp));
|
|
|
|
for (i = 0; i < WPI_SAMPLES_COUNT; i++) {
|
|
group->samples[i].index = rgroup.samples[i].index;
|
|
group->samples[i].power = rgroup.samples[i].power;
|
|
|
|
DPRINTF(("\tsample %d: index=%d power=%d\n", i,
|
|
group->samples[i].index, group->samples[i].power));
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Update Tx power to match what is defined for channel `c'.
|
|
*/
|
|
static int
|
|
wpi_set_txpower(struct wpi_softc *sc, struct ieee80211_channel *c, int async)
|
|
{
|
|
struct ifnet *ifp = sc->sc_ifp;
|
|
struct ieee80211com *ic = ifp->if_l2com;
|
|
struct wpi_power_group *group;
|
|
struct wpi_cmd_txpower txpower;
|
|
u_int chan;
|
|
int i;
|
|
|
|
/* get channel number */
|
|
chan = ieee80211_chan2ieee(ic, c);
|
|
|
|
/* find the power group to which this channel belongs */
|
|
if (IEEE80211_IS_CHAN_5GHZ(c)) {
|
|
for (group = &sc->groups[1]; group < &sc->groups[4]; group++)
|
|
if (chan <= group->chan)
|
|
break;
|
|
} else
|
|
group = &sc->groups[0];
|
|
|
|
memset(&txpower, 0, sizeof txpower);
|
|
txpower.band = IEEE80211_IS_CHAN_5GHZ(c) ? 0 : 1;
|
|
txpower.channel = htole16(chan);
|
|
|
|
/* set Tx power for all OFDM and CCK rates */
|
|
for (i = 0; i <= 11 ; i++) {
|
|
/* retrieve Tx power for this channel/rate combination */
|
|
int idx = wpi_get_power_index(sc, group, c,
|
|
wpi_ridx_to_rate[i]);
|
|
|
|
txpower.rates[i].rate = wpi_ridx_to_plcp[i];
|
|
|
|
if (IEEE80211_IS_CHAN_5GHZ(c)) {
|
|
txpower.rates[i].gain_radio = wpi_rf_gain_5ghz[idx];
|
|
txpower.rates[i].gain_dsp = wpi_dsp_gain_5ghz[idx];
|
|
} else {
|
|
txpower.rates[i].gain_radio = wpi_rf_gain_2ghz[idx];
|
|
txpower.rates[i].gain_dsp = wpi_dsp_gain_2ghz[idx];
|
|
}
|
|
DPRINTFN(WPI_DEBUG_TEMP,("chan %d/rate %d: power index %d\n",
|
|
chan, wpi_ridx_to_rate[i], idx));
|
|
}
|
|
|
|
return wpi_cmd(sc, WPI_CMD_TXPOWER, &txpower, sizeof txpower, async);
|
|
}
|
|
|
|
/*
|
|
* Determine Tx power index for a given channel/rate combination.
|
|
* This takes into account the regulatory information from EEPROM and the
|
|
* current temperature.
|
|
*/
|
|
static int
|
|
wpi_get_power_index(struct wpi_softc *sc, struct wpi_power_group *group,
|
|
struct ieee80211_channel *c, int rate)
|
|
{
|
|
/* fixed-point arithmetic division using a n-bit fractional part */
|
|
#define fdivround(a, b, n) \
|
|
((((1 << n) * (a)) / (b) + (1 << n) / 2) / (1 << n))
|
|
|
|
/* linear interpolation */
|
|
#define interpolate(x, x1, y1, x2, y2, n) \
|
|
((y1) + fdivround(((x) - (x1)) * ((y2) - (y1)), (x2) - (x1), n))
|
|
|
|
struct ifnet *ifp = sc->sc_ifp;
|
|
struct ieee80211com *ic = ifp->if_l2com;
|
|
struct wpi_power_sample *sample;
|
|
int pwr, idx;
|
|
u_int chan;
|
|
|
|
/* get channel number */
|
|
chan = ieee80211_chan2ieee(ic, c);
|
|
|
|
/* default power is group's maximum power - 3dB */
|
|
pwr = group->maxpwr / 2;
|
|
|
|
/* decrease power for highest OFDM rates to reduce distortion */
|
|
switch (rate) {
|
|
case 72: /* 36Mb/s */
|
|
pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 0 : 5;
|
|
break;
|
|
case 96: /* 48Mb/s */
|
|
pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 7 : 10;
|
|
break;
|
|
case 108: /* 54Mb/s */
|
|
pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 9 : 12;
|
|
break;
|
|
}
|
|
|
|
/* never exceed channel's maximum allowed Tx power */
|
|
pwr = min(pwr, sc->maxpwr[chan]);
|
|
|
|
/* retrieve power index into gain tables from samples */
|
|
for (sample = group->samples; sample < &group->samples[3]; sample++)
|
|
if (pwr > sample[1].power)
|
|
break;
|
|
/* fixed-point linear interpolation using a 19-bit fractional part */
|
|
idx = interpolate(pwr, sample[0].power, sample[0].index,
|
|
sample[1].power, sample[1].index, 19);
|
|
|
|
/*
|
|
* Adjust power index based on current temperature
|
|
* - if colder than factory-calibrated: decreate output power
|
|
* - if warmer than factory-calibrated: increase output power
|
|
*/
|
|
idx -= (sc->temp - group->temp) * 11 / 100;
|
|
|
|
/* decrease power for CCK rates (-5dB) */
|
|
if (!WPI_RATE_IS_OFDM(rate))
|
|
idx += 10;
|
|
|
|
/* keep power index in a valid range */
|
|
if (idx < 0)
|
|
return 0;
|
|
if (idx > WPI_MAX_PWR_INDEX)
|
|
return WPI_MAX_PWR_INDEX;
|
|
return idx;
|
|
|
|
#undef interpolate
|
|
#undef fdivround
|
|
}
|
|
|
|
/**
|
|
* Called by net80211 framework to indicate that a scan
|
|
* is starting. This function doesn't actually do the scan,
|
|
* wpi_scan_curchan starts things off. This function is more
|
|
* of an early warning from the framework we should get ready
|
|
* for the scan.
|
|
*/
|
|
static void
|
|
wpi_scan_start(struct ieee80211com *ic)
|
|
{
|
|
struct ifnet *ifp = ic->ic_ifp;
|
|
struct wpi_softc *sc = ifp->if_softc;
|
|
|
|
WPI_LOCK(sc);
|
|
wpi_set_led(sc, WPI_LED_LINK, 20, 2);
|
|
WPI_UNLOCK(sc);
|
|
}
|
|
|
|
/**
|
|
* Called by the net80211 framework, indicates that the
|
|
* scan has ended. If there is a scan in progress on the card
|
|
* then it should be aborted.
|
|
*/
|
|
static void
|
|
wpi_scan_end(struct ieee80211com *ic)
|
|
{
|
|
/* XXX ignore */
|
|
}
|
|
|
|
/**
|
|
* Called by the net80211 framework to indicate to the driver
|
|
* that the channel should be changed
|
|
*/
|
|
static void
|
|
wpi_set_channel(struct ieee80211com *ic)
|
|
{
|
|
struct ifnet *ifp = ic->ic_ifp;
|
|
struct wpi_softc *sc = ifp->if_softc;
|
|
int error;
|
|
|
|
/*
|
|
* Only need to set the channel in Monitor mode. AP scanning and auth
|
|
* are already taken care of by their respective firmware commands.
|
|
*/
|
|
if (ic->ic_opmode == IEEE80211_M_MONITOR) {
|
|
WPI_LOCK(sc);
|
|
error = wpi_config(sc);
|
|
WPI_UNLOCK(sc);
|
|
if (error != 0)
|
|
device_printf(sc->sc_dev,
|
|
"error %d settting channel\n", error);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Called by net80211 to indicate that we need to scan the current
|
|
* channel. The channel is previously be set via the wpi_set_channel
|
|
* callback.
|
|
*/
|
|
static void
|
|
wpi_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell)
|
|
{
|
|
struct ieee80211vap *vap = ss->ss_vap;
|
|
struct ifnet *ifp = vap->iv_ic->ic_ifp;
|
|
struct wpi_softc *sc = ifp->if_softc;
|
|
|
|
WPI_LOCK(sc);
|
|
if (wpi_scan(sc))
|
|
ieee80211_cancel_scan(vap);
|
|
WPI_UNLOCK(sc);
|
|
}
|
|
|
|
/**
|
|
* Called by the net80211 framework to indicate
|
|
* the minimum dwell time has been met, terminate the scan.
|
|
* We don't actually terminate the scan as the firmware will notify
|
|
* us when it's finished and we have no way to interrupt it.
|
|
*/
|
|
static void
|
|
wpi_scan_mindwell(struct ieee80211_scan_state *ss)
|
|
{
|
|
/* NB: don't try to abort scan; wait for firmware to finish */
|
|
}
|
|
|
|
static void
|
|
wpi_hwreset(void *arg, int pending)
|
|
{
|
|
struct wpi_softc *sc = arg;
|
|
|
|
WPI_LOCK(sc);
|
|
wpi_init_locked(sc, 0);
|
|
WPI_UNLOCK(sc);
|
|
}
|
|
|
|
static void
|
|
wpi_rfreset(void *arg, int pending)
|
|
{
|
|
struct wpi_softc *sc = arg;
|
|
|
|
WPI_LOCK(sc);
|
|
wpi_rfkill_resume(sc);
|
|
WPI_UNLOCK(sc);
|
|
}
|
|
|
|
/*
|
|
* Allocate DMA-safe memory for firmware transfer.
|
|
*/
|
|
static int
|
|
wpi_alloc_fwmem(struct wpi_softc *sc)
|
|
{
|
|
/* allocate enough contiguous space to store text and data */
|
|
return wpi_dma_contig_alloc(sc, &sc->fw_dma, NULL,
|
|
WPI_FW_MAIN_TEXT_MAXSZ + WPI_FW_MAIN_DATA_MAXSZ, 1,
|
|
BUS_DMA_NOWAIT);
|
|
}
|
|
|
|
static void
|
|
wpi_free_fwmem(struct wpi_softc *sc)
|
|
{
|
|
wpi_dma_contig_free(&sc->fw_dma);
|
|
}
|
|
|
|
/**
|
|
* Called every second, wpi_watchdog used by the watch dog timer
|
|
* to check that the card is still alive
|
|
*/
|
|
static void
|
|
wpi_watchdog(void *arg)
|
|
{
|
|
struct wpi_softc *sc = arg;
|
|
struct ifnet *ifp = sc->sc_ifp;
|
|
struct ieee80211com *ic = ifp->if_l2com;
|
|
uint32_t tmp;
|
|
|
|
DPRINTFN(WPI_DEBUG_WATCHDOG,("Watchdog: tick\n"));
|
|
|
|
if (sc->flags & WPI_FLAG_HW_RADIO_OFF) {
|
|
/* No need to lock firmware memory */
|
|
tmp = wpi_mem_read(sc, WPI_MEM_HW_RADIO_OFF);
|
|
|
|
if ((tmp & 0x1) == 0) {
|
|
/* Radio kill switch is still off */
|
|
callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc);
|
|
return;
|
|
}
|
|
|
|
device_printf(sc->sc_dev, "Hardware Switch Enabled\n");
|
|
ieee80211_runtask(ic, &sc->sc_radiotask);
|
|
return;
|
|
}
|
|
|
|
if (sc->sc_tx_timer > 0) {
|
|
if (--sc->sc_tx_timer == 0) {
|
|
device_printf(sc->sc_dev,"device timeout\n");
|
|
if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
|
|
ieee80211_runtask(ic, &sc->sc_restarttask);
|
|
}
|
|
}
|
|
if (sc->sc_scan_timer > 0) {
|
|
struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
|
|
if (--sc->sc_scan_timer == 0 && vap != NULL) {
|
|
device_printf(sc->sc_dev,"scan timeout\n");
|
|
ieee80211_cancel_scan(vap);
|
|
ieee80211_runtask(ic, &sc->sc_restarttask);
|
|
}
|
|
}
|
|
|
|
if (ifp->if_drv_flags & IFF_DRV_RUNNING)
|
|
callout_reset(&sc->watchdog_to, hz, wpi_watchdog, sc);
|
|
}
|
|
|
|
#ifdef WPI_DEBUG
|
|
static const char *wpi_cmd_str(int cmd)
|
|
{
|
|
switch (cmd) {
|
|
case WPI_DISABLE_CMD: return "WPI_DISABLE_CMD";
|
|
case WPI_CMD_CONFIGURE: return "WPI_CMD_CONFIGURE";
|
|
case WPI_CMD_ASSOCIATE: return "WPI_CMD_ASSOCIATE";
|
|
case WPI_CMD_SET_WME: return "WPI_CMD_SET_WME";
|
|
case WPI_CMD_TSF: return "WPI_CMD_TSF";
|
|
case WPI_CMD_ADD_NODE: return "WPI_CMD_ADD_NODE";
|
|
case WPI_CMD_TX_DATA: return "WPI_CMD_TX_DATA";
|
|
case WPI_CMD_MRR_SETUP: return "WPI_CMD_MRR_SETUP";
|
|
case WPI_CMD_SET_LED: return "WPI_CMD_SET_LED";
|
|
case WPI_CMD_SET_POWER_MODE: return "WPI_CMD_SET_POWER_MODE";
|
|
case WPI_CMD_SCAN: return "WPI_CMD_SCAN";
|
|
case WPI_CMD_SET_BEACON:return "WPI_CMD_SET_BEACON";
|
|
case WPI_CMD_TXPOWER: return "WPI_CMD_TXPOWER";
|
|
case WPI_CMD_BLUETOOTH: return "WPI_CMD_BLUETOOTH";
|
|
|
|
default:
|
|
KASSERT(1, ("Unknown Command: %d\n", cmd));
|
|
return "UNKNOWN CMD"; /* Make the compiler happy */
|
|
}
|
|
}
|
|
#endif
|
|
|
|
MODULE_DEPEND(wpi, pci, 1, 1, 1);
|
|
MODULE_DEPEND(wpi, wlan, 1, 1, 1);
|
|
MODULE_DEPEND(wpi, firmware, 1, 1, 1);
|