diff options
Diffstat (limited to 'drivers/net/wimax/i2400m/i2400m.h')
| -rw-r--r-- | drivers/net/wimax/i2400m/i2400m.h | 494 |
1 files changed, 356 insertions, 138 deletions
diff --git a/drivers/net/wimax/i2400m/i2400m.h b/drivers/net/wimax/i2400m/i2400m.h index 3b9d27ea295..5a34e72bab9 100644 --- a/drivers/net/wimax/i2400m/i2400m.h +++ b/drivers/net/wimax/i2400m/i2400m.h @@ -46,7 +46,7 @@ * - bus generic driver (this part) * * The bus specific driver sets up stuff specific to the bus the - * device is connected to (USB, SDIO, PCI, tam-tam...non-authoritative + * device is connected to (USB, PCI, tam-tam...non-authoritative * nor binding list) which is basically the device-model management * (probe/disconnect, etc), moving data from device to kernel and * back, doing the power saving details and reseting the device. @@ -75,7 +75,7 @@ * device is up and running or shutdown (through ifconfig up / * down). Bus-generic only. * - * - control ops: control.c - implements various commmands for + * - control ops: control.c - implements various commands for * controlling the device. bus-generic only. * * - device model glue: driver.c - implements helpers for the @@ -117,16 +117,30 @@ * well as i2400m->wimax_dev.net_dev and call i2400m_setup(). The * i2400m driver will only register with the WiMAX and network stacks; * the only access done to the device is to read the MAC address so we - * can register a network device. This calls i2400m_dev_start() to - * load firmware, setup communication with the device and configure it - * for operation. + * can register a network device. * - * At this point, control and data communications are possible. + * The high-level call flow is: + * + * bus_probe() + * i2400m_setup() + * i2400m->bus_setup() + * boot rom initialization / read mac addr + * network / WiMAX stacks registration + * i2400m_dev_start() + * i2400m->bus_dev_start() + * i2400m_dev_initialize() + * + * The reverse applies for a disconnect() call: * - * On disconnect/driver unload, the bus-specific disconnect function - * calls i2400m_release() to undo i2400m_setup(). i2400m_dev_stop() - * shuts the firmware down and releases resources uses to communicate - * with the device. + * bus_disconnect() + * i2400m_release() + * i2400m_dev_stop() + * i2400m_dev_shutdown() + * i2400m->bus_dev_stop() + * network / WiMAX stack unregistration + * i2400m->bus_release() + * + * At this point, control and data communications are possible. * * While the device is up, it might reset. The bus-specific driver has * to catch that situation and call i2400m_dev_reset_handle() to deal @@ -141,23 +155,53 @@ #include <linux/netdevice.h> #include <linux/completion.h> #include <linux/rwsem.h> -#include <asm/atomic.h> +#include <linux/atomic.h> #include <net/wimax.h> #include <linux/wimax/i2400m.h> #include <asm/byteorder.h> +enum { +/* netdev interface */ + /* + * Out of NWG spec (R1_v1.2.2), 3.3.3 ASN Bearer Plane MTU Size + * + * The MTU is 1400 or less + */ + I2400M_MAX_MTU = 1400, +}; + /* Misc constants */ enum { - /* Firmware uploading */ - I2400M_BOOT_RETRIES = 3, /* Size of the Boot Mode Command buffer */ I2400M_BM_CMD_BUF_SIZE = 16 * 1024, I2400M_BM_ACK_BUF_SIZE = 256, }; +enum { + /* Maximum number of bus reset can be retried */ + I2400M_BUS_RESET_RETRIES = 3, +}; + +/** + * struct i2400m_poke_table - Hardware poke table for the Intel 2400m + * + * This structure will be used to create a device specific poke table + * to put the device in a consistent state at boot time. + * + * @address: The device address to poke + * + * @data: The data value to poke to the device address + * + */ +struct i2400m_poke_table{ + __le32 address; + __le32 data; +}; -/* Firmware version we request when pulling the fw image file */ -#define I2400M_FW_VERSION "1.4" +#define I2400M_FW_POKE(a, d) { \ + .address = cpu_to_le32(a), \ + .data = cpu_to_le32(d) \ +} /** @@ -178,6 +222,8 @@ enum i2400m_reset_type { }; struct i2400m_reset_ctx; +struct i2400m_roq; +struct i2400m_barker_db; /** * struct i2400m - descriptor for an Intel 2400m @@ -185,27 +231,54 @@ struct i2400m_reset_ctx; * Members marked with [fill] must be filled out/initialized before * calling i2400m_setup(). * - * @bus_tx_block_size: [fill] SDIO imposes a 256 block size, USB 16, - * so we have a tx_blk_size variable that the bus layer sets to - * tell the engine how much of that we need. + * Note the @bus_setup/@bus_release, @bus_dev_start/@bus_dev_release + * call pairs are very much doing almost the same, and depending on + * the underlying bus, some stuff has to be put in one or the + * other. The idea of setup/release is that they setup the minimal + * amount needed for loading firmware, where us dev_start/stop setup + * the rest needed to do full data/control traffic. + * + * @bus_tx_block_size: [fill] USB imposes a 16 block size, but other + * busses will differ. So we have a tx_blk_size variable that the + * bus layer sets to tell the engine how much of that we need. + * + * @bus_tx_room_min: [fill] Minimum room required while allocating + * TX queue's buffer space for message header. USB requires + * 16 bytes. Refer to bus specific driver code for details. * * @bus_pl_size_max: [fill] Maximum payload size. * - * @bus_dev_start: [fill] Function called by the bus-generic code - * [i2400m_dev_start()] to setup the bus-specific communications - * to the the device. See LIFE CYCLE above. + * @bus_setup: [optional fill] Function called by the bus-generic code + * [i2400m_setup()] to setup the basic bus-specific communications + * to the the device needed to load firmware. See LIFE CYCLE above. * * NOTE: Doesn't need to upload the firmware, as that is taken * care of by the bus-generic code. * - * @bus_dev_stop: [fill] Function called by the bus-generic code - * [i2400m_dev_stop()] to shutdown the bus-specific communications - * to the the device. See LIFE CYCLE above. + * @bus_release: [optional fill] Function called by the bus-generic + * code [i2400m_release()] to shutdown the basic bus-specific + * communications to the the device needed to load firmware. See + * LIFE CYCLE above. * * This function does not need to reset the device, just tear down * all the host resources created to handle communication with * the device. * + * @bus_dev_start: [optional fill] Function called by the bus-generic + * code [i2400m_dev_start()] to do things needed to start the + * device. See LIFE CYCLE above. + * + * NOTE: Doesn't need to upload the firmware, as that is taken + * care of by the bus-generic code. + * + * @bus_dev_stop: [optional fill] Function called by the bus-generic + * code [i2400m_dev_stop()] to do things needed for stopping the + * device. See LIFE CYCLE above. + * + * This function does not need to reset the device, just tear down + * all the host resources created to handle communication with + * the device. + * * @bus_tx_kick: [fill] Function called by the bus-generic code to let * the bus-specific code know that there is data available in the * TX FIFO for transmission to the device. @@ -227,6 +300,20 @@ struct i2400m_reset_ctx; * process, so it cannot rely on common infrastructure being laid * out. * + * IMPORTANT: don't call reset on RT_BUS with i2400m->init_mutex + * held, as the .pre/.post reset handlers will deadlock. + * + * @bus_bm_retries: [fill] How many times shall a firmware upload / + * device initialization be retried? Different models of the same + * device might need different values, hence it is set by the + * bus-specific driver. Note this value is used in two places, + * i2400m_fw_dnload() and __i2400m_dev_start(); they won't become + * multiplicative (__i2400m_dev_start() calling N times + * i2400m_fw_dnload() and this trying N times to download the + * firmware), as if __i2400m_dev_start() only retries if the + * firmware crashed while initializing the device (not in a + * general case). + * * @bus_bm_cmd_send: [fill] Function called to send a boot-mode * command. Flags are defined in 'enum i2400m_bm_cmd_flags'. This * is synchronous and has to return 0 if ok or < 0 errno code in @@ -242,21 +329,55 @@ struct i2400m_reset_ctx; * The caller to this function will check if the response is a * barker that indicates the device going into reset mode. * - * @bus_fw_name: [fill] name of the firmware image (in most cases, - * they are all the same for a single release, except that they - * have the type of the bus embedded in the name (eg: - * i2400m-fw-X-VERSION.sbcf, where X is the bus name). + * @bus_fw_names: [fill] a NULL-terminated array with the names of the + * firmware images to try loading. This is made a list so we can + * support backward compatibility of firmware releases (eg: if we + * can't find the default v1.4, we try v1.3). In general, the name + * should be i2400m-fw-X-VERSION.sbcf, where X is the bus name. + * The list is tried in order and the first one that loads is + * used. The fw loader will set i2400m->fw_name to point to the + * active firmware image. * * @bus_bm_mac_addr_impaired: [fill] Set to true if the device's MAC * address provided in boot mode is kind of broken and needs to * be re-read later on. * + * @bus_bm_pokes_table: [fill/optional] A table of device addresses + * and values that will be poked at device init time to move the + * device to the correct state for the type of boot/firmware being + * used. This table MUST be terminated with (0x000000, + * 0x00000000) or bad things will happen. + * * * @wimax_dev: WiMAX generic device for linkage into the kernel WiMAX * stack. Due to the way a net_device is allocated, we need to * force this to be the first field so that we can get from * netdev_priv() the right pointer. * + * @updown: the device is up and ready for transmitting control and + * data packets. This implies @ready (communication infrastructure + * with the device is ready) and the device's firmware has been + * loaded and the device initialized. + * + * Write to it only inside a i2400m->init_mutex protected area + * followed with a wmb(); rmb() before accesing (unless locked + * inside i2400m->init_mutex). Read access can be loose like that + * [just using rmb()] because the paths that use this also do + * other error checks later on. + * + * @ready: Communication infrastructure with the device is ready, data + * frames can start to be passed around (this is lighter than + * using the WiMAX state for certain hot paths). + * + * Write to it only inside a i2400m->init_mutex protected area + * followed with a wmb(); rmb() before accesing (unless locked + * inside i2400m->init_mutex). Read access can be loose like that + * [just using rmb()] because the paths that use this also do + * other error checks later on. + * + * @rx_reorder: 1 if RX reordering is enabled; this can only be + * set at probe time. + * * @state: device's state (as reported by it) * * @state_wq: waitqueue that is woken up whenever the state changes @@ -295,7 +416,7 @@ struct i2400m_reset_ctx; * * @tx_size_max: biggest TX message sent. * - * @rx_lock: spinlock to protect RX members + * @rx_lock: spinlock to protect RX members and rx_roq_refcount. * * @rx_pl_num: total number of payloads received * @@ -313,6 +434,27 @@ struct i2400m_reset_ctx; * * @rx_size_max: buggest RX message received. * + * @rx_roq: RX ReOrder queues. (fw >= v1.4) When packets are received + * out of order, the device will ask the driver to hold certain + * packets until the ones that are received out of order can be + * delivered. Then the driver can release them to the host. See + * drivers/net/i2400m/rx.c for details. + * + * @rx_roq_refcount: refcount rx_roq. This refcounts any access to + * rx_roq thus preventing rx_roq being destroyed when rx_roq + * is being accessed. rx_roq_refcount is protected by rx_lock. + * + * @rx_reports: reports received from the device that couldn't be + * processed because the driver wasn't still ready; when ready, + * they are pulled from here and chewed. + * + * @rx_reports_ws: Work struct used to kick a scan of the RX reports + * list and to process each. + * + * @src_mac_addr: MAC address used to make ethernet packets be coming + * from. This is generated at i2400m_setup() time and used during + * the life cycle of the instance. See i2400m_fake_eth_header(). + * * @init_mutex: Mutex used for serializing the device bringup * sequence; this way if the device reboots in the middle, we * don't try to do a bringup again while we are tearing down the @@ -364,6 +506,62 @@ struct i2400m_reset_ctx; * These have to be in a separate directory, a child of * (wimax_dev->debugfs_dentry) so they can be removed when the * module unloads, as we don't keep each dentry. + * + * @fw_name: name of the firmware image that is currently being used. + * + * @fw_version: version of the firmware interface, Major.minor, + * encoded in the high word and low word (major << 16 | minor). + * + * @fw_hdrs: NULL terminated array of pointers to the firmware + * headers. This is only available during firmware load time. + * + * @fw_cached: Used to cache firmware when the system goes to + * suspend/standby/hibernation (as on resume we can't read it). If + * NULL, no firmware was cached, read it. If ~0, you can't read + * any firmware files (the system still didn't come out of suspend + * and failed to cache one), so abort; otherwise, a valid cached + * firmware to be used. Access to this variable is protected by + * the spinlock i2400m->rx_lock. + * + * @barker: barker type that the device uses; this is initialized by + * i2400m_is_boot_barker() the first time it is called. Then it + * won't change during the life cycle of the device and every time + * a boot barker is received, it is just verified for it being the + * same. + * + * @pm_notifier: used to register for PM events + * + * @bus_reset_retries: counter for the number of bus resets attempted for + * this boot. It's not for tracking the number of bus resets during + * the whole driver life cycle (from insmod to rmmod) but for the + * number of dev_start() executed until dev_start() returns a success + * (ie: a good boot means a dev_stop() followed by a successful + * dev_start()). dev_reset_handler() increments this counter whenever + * it is triggering a bus reset. It checks this counter to decide if a + * subsequent bus reset should be retried. dev_reset_handler() retries + * the bus reset until dev_start() succeeds or the counter reaches + * I2400M_BUS_RESET_RETRIES. The counter is cleared to 0 in + * dev_reset_handle() when dev_start() returns a success, + * ie: a successul boot is completed. + * + * @alive: flag to denote if the device *should* be alive. This flag is + * everything like @updown (see doc for @updown) except reflecting + * the device state *we expect* rather than the actual state as denoted + * by @updown. It is set 1 whenever @updown is set 1 in dev_start(). + * Then the device is expected to be alive all the time + * (i2400m->alive remains 1) until the driver is removed. Therefore + * all the device reboot events detected can be still handled properly + * by either dev_reset_handle() or .pre_reset/.post_reset as long as + * the driver presents. It is set 0 along with @updown in dev_stop(). + * + * @error_recovery: flag to denote if we are ready to take an error recovery. + * 0 for ready to take an error recovery; 1 for not ready. It is + * initialized to 1 while probe() since we don't tend to take any error + * recovery during probe(). It is decremented by 1 whenever dev_start() + * succeeds to indicate we are ready to take error recovery from now on. + * It is checked every time we wanna schedule an error recovery. If an + * error recovery is already in place (error_recovery was set 1), we + * should not schedule another one until the last one is done. */ struct i2400m { struct wimax_dev wimax_dev; /* FIRST! See doc */ @@ -371,16 +569,22 @@ struct i2400m { unsigned updown:1; /* Network device is up or down */ unsigned boot_mode:1; /* is the device in boot mode? */ unsigned sboot:1; /* signed or unsigned fw boot */ - unsigned ready:1; /* all probing steps done */ + unsigned ready:1; /* Device comm infrastructure ready */ + unsigned rx_reorder:1; /* RX reorder is enabled */ u8 trace_msg_from_user; /* echo rx msgs to 'trace' pipe */ - /* typed u8 so debugfs/u8 can tweak */ + /* typed u8 so /sys/kernel/debug/u8 can tweak */ enum i2400m_system_state state; wait_queue_head_t state_wq; /* Woken up when on state updates */ size_t bus_tx_block_size; + size_t bus_tx_room_min; size_t bus_pl_size_max; + unsigned bus_bm_retries; + + int (*bus_setup)(struct i2400m *); int (*bus_dev_start)(struct i2400m *); void (*bus_dev_stop)(struct i2400m *); + void (*bus_release)(struct i2400m *); void (*bus_tx_kick)(struct i2400m *); int (*bus_reset)(struct i2400m *, enum i2400m_reset_type); ssize_t (*bus_bm_cmd_send)(struct i2400m *, @@ -388,8 +592,9 @@ struct i2400m { size_t, int flags); ssize_t (*bus_bm_wait_for_ack)(struct i2400m *, struct i2400m_bootrom_header *, size_t); - const char *bus_fw_name; + const char **bus_fw_names; unsigned bus_bm_mac_addr_impaired:1; + const struct i2400m_poke_table *bus_bm_pokes_table; spinlock_t tx_lock; /* protect TX state */ void *tx_buf; @@ -400,10 +605,16 @@ struct i2400m { unsigned tx_pl_num, tx_pl_max, tx_pl_min, tx_num, tx_size_acc, tx_size_min, tx_size_max; - /* RX stats */ - spinlock_t rx_lock; /* protect RX state */ + /* RX stuff */ + /* protect RX state and rx_roq_refcount */ + spinlock_t rx_lock; unsigned rx_pl_num, rx_pl_max, rx_pl_min, rx_num, rx_size_acc, rx_size_min, rx_size_max; + struct i2400m_roq *rx_roq; /* access is refcounted */ + struct kref rx_roq_refcount; /* refcount access to rx_roq */ + u8 src_mac_addr[ETH_HLEN]; + struct list_head rx_reports; /* under rx_lock! */ + struct work_struct rx_report_ws; struct mutex msg_mutex; /* serialize command execution */ struct completion msg_completion; @@ -420,37 +631,30 @@ struct i2400m { struct work_struct wake_tx_ws; struct sk_buff *wake_tx_skb; - struct dentry *debugfs_dentry; -}; + struct work_struct reset_ws; + const char *reset_reason; + struct work_struct recovery_ws; -/* - * Initialize a 'struct i2400m' from all zeroes - * - * This is a bus-generic API call. - */ -static inline -void i2400m_init(struct i2400m *i2400m) -{ - wimax_dev_init(&i2400m->wimax_dev); + struct dentry *debugfs_dentry; + const char *fw_name; /* name of the current firmware image */ + unsigned long fw_version; /* version of the firmware interface */ + const struct i2400m_bcf_hdr **fw_hdrs; + struct i2400m_fw *fw_cached; /* protected by rx_lock */ + struct i2400m_barker_db *barker; - i2400m->boot_mode = 1; - init_waitqueue_head(&i2400m->state_wq); + struct notifier_block pm_notifier; - spin_lock_init(&i2400m->tx_lock); - i2400m->tx_pl_min = UINT_MAX; - i2400m->tx_size_min = UINT_MAX; + /* counting bus reset retries in this boot */ + atomic_t bus_reset_retries; - spin_lock_init(&i2400m->rx_lock); - i2400m->rx_pl_min = UINT_MAX; - i2400m->rx_size_min = UINT_MAX; + /* if the device is expected to be alive */ + unsigned alive; - mutex_init(&i2400m->msg_mutex); - init_completion(&i2400m->msg_completion); + /* 0 if we are ready for error recovery; 1 if not ready */ + atomic_t error_recovery; - mutex_init(&i2400m->init_mutex); - /* wake_tx_ws is initialized in i2400m_tx_setup() */ -} +}; /* @@ -496,9 +700,9 @@ enum i2400m_bm_cmd_flags { * @I2400M_BRI_NO_REBOOT: Do not reboot the device and proceed * directly to wait for a reboot barker from the device. * @I2400M_BRI_MAC_REINIT: We need to reinitialize the boot - * rom after reading the MAC adress. This is quite a dirty hack, + * rom after reading the MAC address. This is quite a dirty hack, * if you ask me -- the device requires the bootrom to be - * intialized after reading the MAC address. + * initialized after reading the MAC address. */ enum i2400m_bri { I2400M_BRI_SOFT = 1 << 1, @@ -506,10 +710,18 @@ enum i2400m_bri { I2400M_BRI_MAC_REINIT = 1 << 3, }; -extern void i2400m_bm_cmd_prepare(struct i2400m_bootrom_header *); -extern int i2400m_dev_bootstrap(struct i2400m *, enum i2400m_bri); -extern int i2400m_read_mac_addr(struct i2400m *); -extern int i2400m_bootrom_init(struct i2400m *, enum i2400m_bri); +void i2400m_bm_cmd_prepare(struct i2400m_bootrom_header *); +int i2400m_dev_bootstrap(struct i2400m *, enum i2400m_bri); +int i2400m_read_mac_addr(struct i2400m *); +int i2400m_bootrom_init(struct i2400m *, enum i2400m_bri); +int i2400m_is_boot_barker(struct i2400m *, const void *, size_t); +static inline +int i2400m_is_d2h_barker(const void *buf) +{ + const __le32 *barker = buf; + return le32_to_cpu(*barker) == I2400M_D2H_MSG_BARKER; +} +void i2400m_unknown_barker(struct i2400m *, const void *, size_t); /* Make/grok boot-rom header commands */ @@ -577,19 +789,31 @@ unsigned i2400m_brh_get_signature(const struct i2400m_bootrom_header *hdr) /* * Driver / device setup and internal functions */ -extern void i2400m_netdev_setup(struct net_device *net_dev); -extern int i2400m_tx_setup(struct i2400m *); -extern void i2400m_wake_tx_work(struct work_struct *); -extern void i2400m_tx_release(struct i2400m *); - -extern void i2400m_net_rx(struct i2400m *, struct sk_buff *, unsigned, - const void *, int); +void i2400m_init(struct i2400m *); +int i2400m_reset(struct i2400m *, enum i2400m_reset_type); +void i2400m_netdev_setup(struct net_device *net_dev); +int i2400m_sysfs_setup(struct device_driver *); +void i2400m_sysfs_release(struct device_driver *); +int i2400m_tx_setup(struct i2400m *); +void i2400m_wake_tx_work(struct work_struct *); +void i2400m_tx_release(struct i2400m *); + +int i2400m_rx_setup(struct i2400m *); +void i2400m_rx_release(struct i2400m *); + +void i2400m_fw_cache(struct i2400m *); +void i2400m_fw_uncache(struct i2400m *); + +void i2400m_net_rx(struct i2400m *, struct sk_buff *, unsigned, const void *, + int); +void i2400m_net_erx(struct i2400m *, struct sk_buff *, enum i2400m_cs); +void i2400m_net_wake_stop(struct i2400m *); enum i2400m_pt; -extern int i2400m_tx(struct i2400m *, const void *, size_t, enum i2400m_pt); +int i2400m_tx(struct i2400m *, const void *, size_t, enum i2400m_pt); #ifdef CONFIG_DEBUG_FS -extern int i2400m_debugfs_add(struct i2400m *); -extern void i2400m_debugfs_rm(struct i2400m *); +int i2400m_debugfs_add(struct i2400m *); +void i2400m_debugfs_rm(struct i2400m *); #else static inline int i2400m_debugfs_add(struct i2400m *i2400m) { @@ -598,14 +822,12 @@ static inline int i2400m_debugfs_add(struct i2400m *i2400m) static inline void i2400m_debugfs_rm(struct i2400m *i2400m) {} #endif -/* Called by _dev_start()/_dev_stop() to initialize the device itself */ -extern int i2400m_dev_initialize(struct i2400m *); -extern void i2400m_dev_shutdown(struct i2400m *); +/* Initialize/shutdown the device */ +int i2400m_dev_initialize(struct i2400m *); +void i2400m_dev_shutdown(struct i2400m *); extern struct attribute_group i2400m_dev_attr_group; -extern int i2400m_schedule_work(struct i2400m *, - void (*)(struct work_struct *), gfp_t); /* HDI message's payload description handling */ @@ -650,32 +872,21 @@ void i2400m_put(struct i2400m *i2400m) dev_put(i2400m->wimax_dev.net_dev); } -extern int i2400m_dev_reset_handle(struct i2400m *); +int i2400m_dev_reset_handle(struct i2400m *, const char *); +int i2400m_pre_reset(struct i2400m *); +int i2400m_post_reset(struct i2400m *); +void i2400m_error_recovery(struct i2400m *); /* * _setup()/_release() are called by the probe/disconnect functions of * the bus-specific drivers. */ -extern int i2400m_setup(struct i2400m *, enum i2400m_bri bm_flags); -extern void i2400m_release(struct i2400m *); - -extern int i2400m_rx(struct i2400m *, struct sk_buff *); -extern struct i2400m_msg_hdr *i2400m_tx_msg_get(struct i2400m *, size_t *); -extern void i2400m_tx_msg_sent(struct i2400m *); - -static const __le32 i2400m_NBOOT_BARKER[4] = { - __constant_cpu_to_le32(I2400M_NBOOT_BARKER), - __constant_cpu_to_le32(I2400M_NBOOT_BARKER), - __constant_cpu_to_le32(I2400M_NBOOT_BARKER), - __constant_cpu_to_le32(I2400M_NBOOT_BARKER) -}; +int i2400m_setup(struct i2400m *, enum i2400m_bri bm_flags); +void i2400m_release(struct i2400m *); -static const __le32 i2400m_SBOOT_BARKER[4] = { - __constant_cpu_to_le32(I2400M_SBOOT_BARKER), - __constant_cpu_to_le32(I2400M_SBOOT_BARKER), - __constant_cpu_to_le32(I2400M_SBOOT_BARKER), - __constant_cpu_to_le32(I2400M_SBOOT_BARKER) -}; +int i2400m_rx(struct i2400m *, struct sk_buff *); +struct i2400m_msg_hdr *i2400m_tx_msg_get(struct i2400m *, size_t *); +void i2400m_tx_msg_sent(struct i2400m *); /* @@ -688,39 +899,19 @@ struct device *i2400m_dev(struct i2400m *i2400m) return i2400m->wimax_dev.net_dev->dev.parent; } -/* - * Helper for scheduling simple work functions - * - * This struct can get any kind of payload attached (normally in the - * form of a struct where you pack the stuff you want to pass to the - * _work function). - */ -struct i2400m_work { - struct work_struct ws; - struct i2400m *i2400m; - u8 pl[0]; -}; -extern int i2400m_queue_work(struct i2400m *, - void (*)(struct work_struct *), gfp_t, - const void *, size_t); - -extern int i2400m_msg_check_status(const struct i2400m_l3l4_hdr *, - char *, size_t); -extern int i2400m_msg_size_check(struct i2400m *, - const struct i2400m_l3l4_hdr *, size_t); -extern struct sk_buff *i2400m_msg_to_dev(struct i2400m *, const void *, size_t); -extern void i2400m_msg_to_dev_cancel_wait(struct i2400m *, int); -extern void i2400m_msg_ack_hook(struct i2400m *, - const struct i2400m_l3l4_hdr *, size_t); -extern void i2400m_report_hook(struct i2400m *, - const struct i2400m_l3l4_hdr *, size_t); -extern int i2400m_cmd_enter_powersave(struct i2400m *); -extern int i2400m_cmd_get_state(struct i2400m *); -extern int i2400m_cmd_exit_idle(struct i2400m *); -extern struct sk_buff *i2400m_get_device_info(struct i2400m *); -extern int i2400m_firmware_check(struct i2400m *); -extern int i2400m_set_init_config(struct i2400m *, - const struct i2400m_tlv_hdr **, size_t); +int i2400m_msg_check_status(const struct i2400m_l3l4_hdr *, char *, size_t); +int i2400m_msg_size_check(struct i2400m *, const struct i2400m_l3l4_hdr *, + size_t); +struct sk_buff *i2400m_msg_to_dev(struct i2400m *, const void *, size_t); +void i2400m_msg_to_dev_cancel_wait(struct i2400m *, int); +void i2400m_report_hook(struct i2400m *, const struct i2400m_l3l4_hdr *, + size_t); +void i2400m_report_hook_work(struct work_struct *); +int i2400m_cmd_enter_powersave(struct i2400m *); +int i2400m_cmd_exit_idle(struct i2400m *); +struct sk_buff *i2400m_get_device_info(struct i2400m *); +int i2400m_firmware_check(struct i2400m *); +int i2400m_set_idle_timeout(struct i2400m *, unsigned); static inline struct usb_endpoint_descriptor *usb_get_epd(struct usb_interface *iface, int ep) @@ -728,10 +919,35 @@ struct usb_endpoint_descriptor *usb_get_epd(struct usb_interface *iface, int ep) return &iface->cur_altsetting->endpoint[ep].desc; } -extern int i2400m_op_rfkill_sw_toggle(struct wimax_dev *, - enum wimax_rf_state); -extern void i2400m_report_tlv_rf_switches_status( - struct i2400m *, const struct i2400m_tlv_rf_switches_status *); +int i2400m_op_rfkill_sw_toggle(struct wimax_dev *, enum wimax_rf_state); +void i2400m_report_tlv_rf_switches_status(struct i2400m *, + const struct i2400m_tlv_rf_switches_status *); + +/* + * Helpers for firmware backwards compatibility + * + * As we aim to support at least the firmware version that was + * released with the previous kernel/driver release, some code will be + * conditionally executed depending on the firmware version. On each + * release, the code to support fw releases past the last two ones + * will be purged. + * + * By making it depend on this macros, it is easier to keep it a tab + * on what has to go and what not. + */ +static inline +unsigned i2400m_le_v1_3(struct i2400m *i2400m) +{ + /* running fw is lower or v1.3 */ + return i2400m->fw_version <= 0x00090001; +} + +static inline +unsigned i2400m_ge_v1_4(struct i2400m *i2400m) +{ + /* running fw is higher or v1.4 */ + return i2400m->fw_version >= 0x00090002; +} /* @@ -747,9 +963,11 @@ void __i2400m_msleep(unsigned ms) #endif } -/* Module parameters */ -extern int i2400m_idle_mode_disabled; +/* module initialization helpers */ +int i2400m_barker_db_init(const char *); +void i2400m_barker_db_exit(void); + #endif /* #ifndef __I2400M_H__ */ |