diff --git a/drivers/net/ieee802154/at86rf230.c b/drivers/net/ieee802154/at86rf230.c index ab31544bc254..34bf011584fb 100644 --- a/drivers/net/ieee802154/at86rf230.c +++ b/drivers/net/ieee802154/at86rf230.c @@ -37,7 +37,6 @@ struct at86rf230_local { struct spi_device *spi; - int rstn, slp_tr, dig2; u8 part; u8 vers; @@ -53,8 +52,16 @@ struct at86rf230_local { spinlock_t lock; bool irq_busy; bool is_tx; + bool tx_aret; + + int rssi_base_val; }; +static inline int is_rf212(struct at86rf230_local *local) +{ + return local->part == 7; +} + #define RG_TRX_STATUS (0x01) #define SR_TRX_STATUS 0x01, 0x1f, 0 #define SR_RESERVED_01_3 0x01, 0x20, 5 @@ -100,7 +107,10 @@ struct at86rf230_local { #define SR_SFD_VALUE 0x0b, 0xff, 0 #define RG_TRX_CTRL_2 (0x0c) #define SR_OQPSK_DATA_RATE 0x0c, 0x03, 0 -#define SR_RESERVED_0c_2 0x0c, 0x7c, 2 +#define SR_SUB_MODE 0x0c, 0x04, 2 +#define SR_BPSK_QPSK 0x0c, 0x08, 3 +#define SR_OQPSK_SUB1_RC_EN 0x0c, 0x10, 4 +#define SR_RESERVED_0c_5 0x0c, 0x60, 5 #define SR_RX_SAFE_MODE 0x0c, 0x80, 7 #define RG_ANT_DIV (0x0d) #define SR_ANT_CTRL 0x0d, 0x03, 0 @@ -145,7 +155,7 @@ struct at86rf230_local { #define SR_RESERVED_17_5 0x17, 0x08, 3 #define SR_AACK_UPLD_RES_FT 0x17, 0x10, 4 #define SR_AACK_FLTR_RES_FT 0x17, 0x20, 5 -#define SR_RESERVED_17_2 0x17, 0x40, 6 +#define SR_CSMA_LBT_MODE 0x17, 0x40, 6 #define SR_RESERVED_17_1 0x17, 0x80, 7 #define RG_FTN_CTRL (0x18) #define SR_RESERVED_18_2 0x18, 0x7f, 0 @@ -243,6 +253,57 @@ struct at86rf230_local { #define STATE_BUSY_RX_AACK_NOCLK 0x1E #define STATE_TRANSITION_IN_PROGRESS 0x1F +static int +__at86rf230_detect_device(struct spi_device *spi, u16 *man_id, u8 *part, + u8 *version) +{ + u8 data[4]; + u8 *buf = kmalloc(2, GFP_KERNEL); + int status; + struct spi_message msg; + struct spi_transfer xfer = { + .len = 2, + .tx_buf = buf, + .rx_buf = buf, + }; + u8 reg; + + if (!buf) + return -ENOMEM; + + for (reg = RG_PART_NUM; reg <= RG_MAN_ID_1; reg++) { + buf[0] = (reg & CMD_REG_MASK) | CMD_REG; + buf[1] = 0xff; + dev_vdbg(&spi->dev, "buf[0] = %02x\n", buf[0]); + spi_message_init(&msg); + spi_message_add_tail(&xfer, &msg); + + status = spi_sync(spi, &msg); + dev_vdbg(&spi->dev, "status = %d\n", status); + if (msg.status) + status = msg.status; + + dev_vdbg(&spi->dev, "status = %d\n", status); + dev_vdbg(&spi->dev, "buf[0] = %02x\n", buf[0]); + dev_vdbg(&spi->dev, "buf[1] = %02x\n", buf[1]); + + if (status == 0) + data[reg - RG_PART_NUM] = buf[1]; + else + break; + } + + if (status == 0) { + *part = data[0]; + *version = data[1]; + *man_id = (data[3] << 8) | data[2]; + } + + kfree(buf); + + return status; +} + static int __at86rf230_write(struct at86rf230_local *lp, u8 addr, u8 data) { @@ -489,7 +550,9 @@ at86rf230_state(struct ieee802154_dev *dev, int state) } while (val == STATE_TRANSITION_IN_PROGRESS); - if (val == desired_status) + if (val == desired_status || + (desired_status == STATE_RX_ON && val == STATE_BUSY_RX) || + (desired_status == STATE_RX_AACK_ON && val == STATE_BUSY_RX_AACK)) return 0; pr_err("unexpected state change: %d, asked for %d\n", val, state); @@ -510,7 +573,11 @@ at86rf230_start(struct ieee802154_dev *dev) if (rc) return rc; - return at86rf230_state(dev, STATE_RX_ON); + rc = at86rf230_state(dev, STATE_FORCE_TX_ON); + if (rc) + return rc; + + return at86rf230_state(dev, STATE_RX_AACK_ON); } static void @@ -519,6 +586,39 @@ at86rf230_stop(struct ieee802154_dev *dev) at86rf230_state(dev, STATE_FORCE_TRX_OFF); } +static int +at86rf230_set_channel(struct at86rf230_local *lp, int page, int channel) +{ + lp->rssi_base_val = -91; + + return at86rf230_write_subreg(lp, SR_CHANNEL, channel); +} + +static int +at86rf212_set_channel(struct at86rf230_local *lp, int page, int channel) +{ + int rc; + + if (channel == 0) + rc = at86rf230_write_subreg(lp, SR_SUB_MODE, 0); + else + rc = at86rf230_write_subreg(lp, SR_SUB_MODE, 1); + if (rc < 0) + return rc; + + if (page == 0) { + rc = at86rf230_write_subreg(lp, SR_BPSK_QPSK, 0); + lp->rssi_base_val = -100; + } else { + rc = at86rf230_write_subreg(lp, SR_BPSK_QPSK, 1); + lp->rssi_base_val = -98; + } + if (rc < 0) + return rc; + + return at86rf230_write_subreg(lp, SR_CHANNEL, channel); +} + static int at86rf230_channel(struct ieee802154_dev *dev, int page, int channel) { @@ -527,14 +627,22 @@ at86rf230_channel(struct ieee802154_dev *dev, int page, int channel) might_sleep(); - if (page != 0 || channel < 11 || channel > 26) { + if (page < 0 || page > 31 || + !(lp->dev->phy->channels_supported[page] & BIT(channel))) { WARN_ON(1); return -EINVAL; } - rc = at86rf230_write_subreg(lp, SR_CHANNEL, channel); + if (is_rf212(lp)) + rc = at86rf212_set_channel(lp, page, channel); + else + rc = at86rf230_set_channel(lp, page, channel); + if (rc < 0) + return rc; + msleep(1); /* Wait for PLL */ dev->phy->current_channel = channel; + dev->phy->current_page = page; return 0; } @@ -568,6 +676,12 @@ at86rf230_xmit(struct ieee802154_dev *dev, struct sk_buff *skb) if (rc) goto err_rx; + if (lp->tx_aret) { + rc = at86rf230_write_subreg(lp, SR_TRX_CMD, STATE_TX_ARET_ON); + if (rc) + goto err_rx; + } + rc = at86rf230_write_subreg(lp, SR_TRX_CMD, STATE_BUSY_TX); if (rc) goto err_rx; @@ -668,6 +782,98 @@ at86rf230_set_hw_addr_filt(struct ieee802154_dev *dev, return 0; } +static int +at86rf212_set_txpower(struct ieee802154_dev *dev, int db) +{ + struct at86rf230_local *lp = dev->priv; + int rc; + + /* typical maximum output is 5dBm with RG_PHY_TX_PWR 0x60, lower five + * bits decrease power in 1dB steps. 0x60 represents extra PA gain of + * 0dB. + * thus, supported values for db range from -26 to 5, for 31dB of + * reduction to 0dB of reduction. + */ + if (db > 5 || db < -26) + return -EINVAL; + + db = -(db - 5); + + rc = __at86rf230_write(lp, RG_PHY_TX_PWR, 0x60 | db); + if (rc) + return rc; + + return 0; +} + +static int +at86rf212_set_lbt(struct ieee802154_dev *dev, bool on) +{ + struct at86rf230_local *lp = dev->priv; + + return at86rf230_write_subreg(lp, SR_CSMA_LBT_MODE, on); +} + +static int +at86rf212_set_cca_mode(struct ieee802154_dev *dev, u8 mode) +{ + struct at86rf230_local *lp = dev->priv; + + return at86rf230_write_subreg(lp, SR_CCA_MODE, mode); +} + +static int +at86rf212_set_cca_ed_level(struct ieee802154_dev *dev, s32 level) +{ + struct at86rf230_local *lp = dev->priv; + int desens_steps; + + if (level < lp->rssi_base_val || level > 30) + return -EINVAL; + + desens_steps = (level - lp->rssi_base_val) * 100 / 207; + + return at86rf230_write_subreg(lp, SR_CCA_ED_THRES, desens_steps); +} + +static int +at86rf212_set_csma_params(struct ieee802154_dev *dev, u8 min_be, u8 max_be, + u8 retries) +{ + struct at86rf230_local *lp = dev->priv; + int rc; + + if (min_be > max_be || max_be > 8 || retries > 5) + return -EINVAL; + + rc = at86rf230_write_subreg(lp, SR_MIN_BE, min_be); + if (rc) + return rc; + + rc = at86rf230_write_subreg(lp, SR_MAX_BE, max_be); + if (rc) + return rc; + + return at86rf230_write_subreg(lp, SR_MAX_CSMA_RETRIES, max_be); +} + +static int +at86rf212_set_frame_retries(struct ieee802154_dev *dev, s8 retries) +{ + struct at86rf230_local *lp = dev->priv; + int rc = 0; + + if (retries < -1 || retries > 15) + return -EINVAL; + + lp->tx_aret = retries >= 0; + + if (retries >= 0) + rc = at86rf230_write_subreg(lp, SR_MAX_FRAME_RETRIES, retries); + + return rc; +} + static struct ieee802154_ops at86rf230_ops = { .owner = THIS_MODULE, .xmit = at86rf230_xmit, @@ -678,6 +884,22 @@ static struct ieee802154_ops at86rf230_ops = { .set_hw_addr_filt = at86rf230_set_hw_addr_filt, }; +static struct ieee802154_ops at86rf212_ops = { + .owner = THIS_MODULE, + .xmit = at86rf230_xmit, + .ed = at86rf230_ed, + .set_channel = at86rf230_channel, + .start = at86rf230_start, + .stop = at86rf230_stop, + .set_hw_addr_filt = at86rf230_set_hw_addr_filt, + .set_txpower = at86rf212_set_txpower, + .set_lbt = at86rf212_set_lbt, + .set_cca_mode = at86rf212_set_cca_mode, + .set_cca_ed_level = at86rf212_set_cca_ed_level, + .set_csma_params = at86rf212_set_csma_params, + .set_frame_retries = at86rf212_set_frame_retries, +}; + static void at86rf230_irqwork(struct work_struct *work) { struct at86rf230_local *lp = @@ -752,22 +974,15 @@ static int at86rf230_hw_init(struct at86rf230_local *lp) struct at86rf230_platform_data *pdata = lp->spi->dev.platform_data; int rc, irq_pol; u8 status; + u8 csma_seed[2]; rc = at86rf230_read_subreg(lp, SR_TRX_STATUS, &status); if (rc) return rc; - dev_info(&lp->spi->dev, "Status: %02x\n", status); - if (status == STATE_P_ON) { - rc = at86rf230_write_subreg(lp, SR_TRX_CMD, STATE_TRX_OFF); - if (rc) - return rc; - msleep(1); - rc = at86rf230_read_subreg(lp, SR_TRX_STATUS, &status); - if (rc) - return rc; - dev_info(&lp->spi->dev, "Status: %02x\n", status); - } + rc = at86rf230_write_subreg(lp, SR_TRX_CMD, STATE_FORCE_TRX_OFF); + if (rc) + return rc; /* configure irq polarity, defaults to high active */ if (pdata->irq_type & (IRQF_TRIGGER_FALLING | IRQF_TRIGGER_LOW)) @@ -783,6 +998,14 @@ static int at86rf230_hw_init(struct at86rf230_local *lp) if (rc) return rc; + get_random_bytes(csma_seed, ARRAY_SIZE(csma_seed)); + rc = at86rf230_write_subreg(lp, SR_CSMA_SEED_0, csma_seed[0]); + if (rc) + return rc; + rc = at86rf230_write_subreg(lp, SR_CSMA_SEED_1, csma_seed[1]); + if (rc) + return rc; + /* CLKM changes are applied immediately */ rc = at86rf230_write_subreg(lp, SR_CLKM_SHA_SEL, 0x00); if (rc) @@ -795,16 +1018,6 @@ static int at86rf230_hw_init(struct at86rf230_local *lp) /* Wait the next SLEEP cycle */ msleep(100); - rc = at86rf230_write_subreg(lp, SR_TRX_CMD, STATE_TX_ON); - if (rc) - return rc; - msleep(1); - - rc = at86rf230_read_subreg(lp, SR_TRX_STATUS, &status); - if (rc) - return rc; - dev_info(&lp->spi->dev, "Status: %02x\n", status); - rc = at86rf230_read_subreg(lp, SR_DVDD_OK, &status); if (rc) return rc; @@ -824,26 +1037,18 @@ static int at86rf230_hw_init(struct at86rf230_local *lp) return 0; } -static void at86rf230_fill_data(struct spi_device *spi) -{ - struct at86rf230_local *lp = spi_get_drvdata(spi); - struct at86rf230_platform_data *pdata = spi->dev.platform_data; - - lp->rstn = pdata->rstn; - lp->slp_tr = pdata->slp_tr; - lp->dig2 = pdata->dig2; -} - static int at86rf230_probe(struct spi_device *spi) { struct at86rf230_platform_data *pdata; struct ieee802154_dev *dev; struct at86rf230_local *lp; - u8 man_id_0, man_id_1, status; + u16 man_id = 0; + u8 part = 0, version = 0, status; irq_handler_t irq_handler; work_func_t irq_worker; - int rc, supported = 0; + int rc; const char *chip; + struct ieee802154_ops *ops = NULL; if (!spi->irq) { dev_err(&spi->dev, "no IRQ specified\n"); @@ -856,20 +1061,85 @@ static int at86rf230_probe(struct spi_device *spi) return -EINVAL; } - dev = ieee802154_alloc_device(sizeof(*lp), &at86rf230_ops); - if (!dev) - return -ENOMEM; + rc = gpio_request(pdata->rstn, "rstn"); + if (rc) + return rc; + + if (gpio_is_valid(pdata->slp_tr)) { + rc = gpio_request(pdata->slp_tr, "slp_tr"); + if (rc) + goto err_slp_tr; + } + + rc = gpio_direction_output(pdata->rstn, 1); + if (rc) + goto err_gpio_dir; + + if (gpio_is_valid(pdata->slp_tr)) { + rc = gpio_direction_output(pdata->slp_tr, 0); + if (rc) + goto err_gpio_dir; + } + + /* Reset */ + msleep(1); + gpio_set_value(pdata->rstn, 0); + msleep(1); + gpio_set_value(pdata->rstn, 1); + msleep(1); + + rc = __at86rf230_detect_device(spi, &man_id, &part, &version); + if (rc < 0) + goto err_gpio_dir; + + if (man_id != 0x001f) { + dev_err(&spi->dev, "Non-Atmel dev found (MAN_ID %02x %02x)\n", + man_id >> 8, man_id & 0xFF); + rc = -EINVAL; + goto err_gpio_dir; + } + + switch (part) { + case 2: + chip = "at86rf230"; + /* FIXME: should be easy to support; */ + break; + case 3: + chip = "at86rf231"; + ops = &at86rf230_ops; + break; + case 7: + chip = "at86rf212"; + if (version == 1) + ops = &at86rf212_ops; + break; + default: + chip = "UNKNOWN"; + break; + } + + dev_info(&spi->dev, "Detected %s chip version %d\n", chip, version); + if (!ops) { + rc = -ENOTSUPP; + goto err_gpio_dir; + } + + dev = ieee802154_alloc_device(sizeof(*lp), ops); + if (!dev) { + rc = -ENOMEM; + goto err_gpio_dir; + } lp = dev->priv; lp->dev = dev; + lp->part = part; + lp->vers = version; lp->spi = spi; dev->parent = &spi->dev; dev->extra_tx_headroom = 0; - /* We do support only 2.4 Ghz */ - dev->phy->channels_supported[0] = 0x7FFF800; - dev->flags = IEEE802154_HW_OMIT_CKSUM; + dev->flags = IEEE802154_HW_OMIT_CKSUM | IEEE802154_HW_AACK; if (pdata->irq_type & (IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING)) { irq_worker = at86rf230_irqwork; @@ -886,86 +1156,22 @@ static int at86rf230_probe(struct spi_device *spi) spi_set_drvdata(spi, lp); - at86rf230_fill_data(spi); - - rc = gpio_request(lp->rstn, "rstn"); - if (rc) - goto err_rstn; - - if (gpio_is_valid(lp->slp_tr)) { - rc = gpio_request(lp->slp_tr, "slp_tr"); - if (rc) - goto err_slp_tr; - } - - rc = gpio_direction_output(lp->rstn, 1); - if (rc) - goto err_gpio_dir; - - if (gpio_is_valid(lp->slp_tr)) { - rc = gpio_direction_output(lp->slp_tr, 0); - if (rc) - goto err_gpio_dir; - } - - /* Reset */ - msleep(1); - gpio_set_value(lp->rstn, 0); - msleep(1); - gpio_set_value(lp->rstn, 1); - msleep(1); - - rc = at86rf230_read_subreg(lp, SR_MAN_ID_0, &man_id_0); - if (rc) - goto err_gpio_dir; - rc = at86rf230_read_subreg(lp, SR_MAN_ID_1, &man_id_1); - if (rc) - goto err_gpio_dir; - - if (man_id_1 != 0x00 || man_id_0 != 0x1f) { - dev_err(&spi->dev, "Non-Atmel dev found (MAN_ID %02x %02x)\n", - man_id_1, man_id_0); - rc = -EINVAL; - goto err_gpio_dir; - } - - rc = at86rf230_read_subreg(lp, SR_PART_NUM, &lp->part); - if (rc) - goto err_gpio_dir; - - rc = at86rf230_read_subreg(lp, SR_VERSION_NUM, &lp->vers); - if (rc) - goto err_gpio_dir; - - switch (lp->part) { - case 2: - chip = "at86rf230"; - /* supported = 1; FIXME: should be easy to support; */ - break; - case 3: - chip = "at86rf231"; - supported = 1; - break; - default: - chip = "UNKNOWN"; - break; - } - - dev_info(&spi->dev, "Detected %s chip version %d\n", chip, lp->vers); - if (!supported) { - rc = -ENOTSUPP; - goto err_gpio_dir; + if (is_rf212(lp)) { + dev->phy->channels_supported[0] = 0x00007FF; + dev->phy->channels_supported[2] = 0x00007FF; + } else { + dev->phy->channels_supported[0] = 0x7FFF800; } rc = at86rf230_hw_init(lp); if (rc) - goto err_gpio_dir; + goto err_hw_init; rc = request_irq(spi->irq, irq_handler, IRQF_SHARED | pdata->irq_type, dev_name(&spi->dev), lp); if (rc) - goto err_gpio_dir; + goto err_hw_init; /* Read irq status register to reset irq line */ rc = at86rf230_read_subreg(lp, RG_IRQ_STATUS, 0xff, 0, &status); @@ -980,30 +1186,33 @@ static int at86rf230_probe(struct spi_device *spi) err_irq: free_irq(spi->irq, lp); +err_hw_init: flush_work(&lp->irqwork); -err_gpio_dir: - if (gpio_is_valid(lp->slp_tr)) - gpio_free(lp->slp_tr); -err_slp_tr: - gpio_free(lp->rstn); -err_rstn: + spi_set_drvdata(spi, NULL); mutex_destroy(&lp->bmux); ieee802154_free_device(lp->dev); + +err_gpio_dir: + if (gpio_is_valid(pdata->slp_tr)) + gpio_free(pdata->slp_tr); +err_slp_tr: + gpio_free(pdata->rstn); return rc; } static int at86rf230_remove(struct spi_device *spi) { struct at86rf230_local *lp = spi_get_drvdata(spi); + struct at86rf230_platform_data *pdata = spi->dev.platform_data; ieee802154_unregister_device(lp->dev); free_irq(spi->irq, lp); flush_work(&lp->irqwork); - if (gpio_is_valid(lp->slp_tr)) - gpio_free(lp->slp_tr); - gpio_free(lp->rstn); + if (gpio_is_valid(pdata->slp_tr)) + gpio_free(pdata->slp_tr); + gpio_free(pdata->rstn); mutex_destroy(&lp->bmux); ieee802154_free_device(lp->dev); diff --git a/include/linux/nl802154.h b/include/linux/nl802154.h index fd4f2d1cdf6c..e110b8c266f5 100644 --- a/include/linux/nl802154.h +++ b/include/linux/nl802154.h @@ -70,6 +70,16 @@ enum { IEEE802154_ATTR_PHY_NAME, IEEE802154_ATTR_DEV_TYPE, + IEEE802154_ATTR_TXPOWER, + IEEE802154_ATTR_LBT_ENABLED, + IEEE802154_ATTR_CCA_MODE, + IEEE802154_ATTR_CCA_ED_LEVEL, + IEEE802154_ATTR_CSMA_RETRIES, + IEEE802154_ATTR_CSMA_MIN_BE, + IEEE802154_ATTR_CSMA_MAX_BE, + + IEEE802154_ATTR_FRAME_RETRIES, + __IEEE802154_ATTR_MAX, }; @@ -122,6 +132,8 @@ enum { IEEE802154_ADD_IFACE, IEEE802154_DEL_IFACE, + IEEE802154_SET_PHYPARAMS, + __IEEE802154_CMD_MAX, }; diff --git a/include/net/mac802154.h b/include/net/mac802154.h index 807d6b7a943f..8ca3d04e7558 100644 --- a/include/net/mac802154.h +++ b/include/net/mac802154.h @@ -113,6 +113,32 @@ struct ieee802154_dev { * Set radio for listening on specific address. * Set the device for listening on specified address. * Returns either zero, or negative errno. + * + * set_txpower: + * Set radio transmit power in dB. Called with pib_lock held. + * Returns either zero, or negative errno. + * + * set_lbt + * Enables or disables listen before talk on the device. Called with + * pib_lock held. + * Returns either zero, or negative errno. + * + * set_cca_mode + * Sets the CCA mode used by the device. Called with pib_lock held. + * Returns either zero, or negative errno. + * + * set_cca_ed_level + * Sets the CCA energy detection threshold in dBm. Called with pib_lock + * held. + * Returns either zero, or negative errno. + * + * set_csma_params + * Sets the CSMA parameter set for the PHY. Called with pib_lock held. + * Returns either zero, or negative errno. + * + * set_frame_retries + * Sets the retransmission attempt limit. Called with pib_lock held. + * Returns either zero, or negative errno. */ struct ieee802154_ops { struct module *owner; @@ -129,6 +155,15 @@ struct ieee802154_ops { unsigned long changed); int (*ieee_addr)(struct ieee802154_dev *dev, u8 addr[IEEE802154_ADDR_LEN]); + int (*set_txpower)(struct ieee802154_dev *dev, int db); + int (*set_lbt)(struct ieee802154_dev *dev, bool on); + int (*set_cca_mode)(struct ieee802154_dev *dev, u8 mode); + int (*set_cca_ed_level)(struct ieee802154_dev *dev, + s32 level); + int (*set_csma_params)(struct ieee802154_dev *dev, + u8 min_be, u8 max_be, u8 retries); + int (*set_frame_retries)(struct ieee802154_dev *dev, + s8 retries); }; /* Basic interface to register ieee802154 device */ diff --git a/include/net/wpan-phy.h b/include/net/wpan-phy.h index b52bda8d13b1..10ab0fc6d4f7 100644 --- a/include/net/wpan-phy.h +++ b/include/net/wpan-phy.h @@ -37,15 +37,22 @@ struct wpan_phy { struct mutex pib_lock; /* - * This is a PIB according to 802.15.4-2006. + * This is a PIB according to 802.15.4-2011. * We do not provide timing-related variables, as they * aren't used outside of driver */ u8 current_channel; u8 current_page; u32 channels_supported[32]; - u8 transmit_power; + s8 transmit_power; u8 cca_mode; + u8 min_be; + u8 max_be; + u8 csma_retries; + s8 frame_retries; + + bool lbt; + s32 cca_ed_level; struct device dev; int idx; @@ -54,6 +61,14 @@ struct wpan_phy { const char *name, int type); void (*del_iface)(struct wpan_phy *phy, struct net_device *dev); + int (*set_txpower)(struct wpan_phy *phy, int db); + int (*set_lbt)(struct wpan_phy *phy, bool on); + int (*set_cca_mode)(struct wpan_phy *phy, u8 cca_mode); + int (*set_cca_ed_level)(struct wpan_phy *phy, int level); + int (*set_csma_params)(struct wpan_phy *phy, u8 min_be, u8 max_be, + u8 retries); + int (*set_frame_retries)(struct wpan_phy *phy, s8 retries); + char priv[0] __attribute__((__aligned__(NETDEV_ALIGN))); }; diff --git a/net/ieee802154/ieee802154.h b/net/ieee802154/ieee802154.h index cee4425b9956..6cbc8965be91 100644 --- a/net/ieee802154/ieee802154.h +++ b/net/ieee802154/ieee802154.h @@ -53,6 +53,7 @@ int ieee802154_list_phy(struct sk_buff *skb, struct genl_info *info); int ieee802154_dump_phy(struct sk_buff *skb, struct netlink_callback *cb); int ieee802154_add_iface(struct sk_buff *skb, struct genl_info *info); int ieee802154_del_iface(struct sk_buff *skb, struct genl_info *info); +int ieee802154_set_phyparams(struct sk_buff *skb, struct genl_info *info); enum ieee802154_mcgrp_ids { IEEE802154_COORD_MCGRP, diff --git a/net/ieee802154/netlink.c b/net/ieee802154/netlink.c index 43f1b2bf469f..67c151bf4b91 100644 --- a/net/ieee802154/netlink.c +++ b/net/ieee802154/netlink.c @@ -115,6 +115,7 @@ static const struct genl_ops ieee8021154_ops[] = { ieee802154_dump_phy), IEEE802154_OP(IEEE802154_ADD_IFACE, ieee802154_add_iface), IEEE802154_OP(IEEE802154_DEL_IFACE, ieee802154_del_iface), + IEEE802154_OP(IEEE802154_SET_PHYPARAMS, ieee802154_set_phyparams), /* see nl-mac.c */ IEEE802154_OP(IEEE802154_ASSOCIATE_REQ, ieee802154_associate_req), IEEE802154_OP(IEEE802154_ASSOCIATE_RESP, ieee802154_associate_resp), diff --git a/net/ieee802154/nl-phy.c b/net/ieee802154/nl-phy.c index 89b265aea151..c9dfd6f59e34 100644 --- a/net/ieee802154/nl-phy.c +++ b/net/ieee802154/nl-phy.c @@ -55,7 +55,15 @@ static int ieee802154_nl_fill_phy(struct sk_buff *msg, u32 portid, mutex_lock(&phy->pib_lock); if (nla_put_string(msg, IEEE802154_ATTR_PHY_NAME, wpan_phy_name(phy)) || nla_put_u8(msg, IEEE802154_ATTR_PAGE, phy->current_page) || - nla_put_u8(msg, IEEE802154_ATTR_CHANNEL, phy->current_channel)) + nla_put_u8(msg, IEEE802154_ATTR_CHANNEL, phy->current_channel) || + nla_put_s8(msg, IEEE802154_ATTR_TXPOWER, phy->transmit_power) || + nla_put_u8(msg, IEEE802154_ATTR_LBT_ENABLED, phy->lbt) || + nla_put_u8(msg, IEEE802154_ATTR_CCA_MODE, phy->cca_mode) || + nla_put_s32(msg, IEEE802154_ATTR_CCA_ED_LEVEL, phy->cca_ed_level) || + nla_put_u8(msg, IEEE802154_ATTR_CSMA_RETRIES, phy->csma_retries) || + nla_put_u8(msg, IEEE802154_ATTR_CSMA_MIN_BE, phy->min_be) || + nla_put_u8(msg, IEEE802154_ATTR_CSMA_MAX_BE, phy->max_be) || + nla_put_s8(msg, IEEE802154_ATTR_FRAME_RETRIES, phy->frame_retries)) goto nla_put_failure; for (i = 0; i < 32; i++) { if (phy->channels_supported[i]) @@ -354,3 +362,191 @@ out_dev: return rc; } + +static int phy_set_txpower(struct wpan_phy *phy, struct genl_info *info) +{ + int txpower = nla_get_s8(info->attrs[IEEE802154_ATTR_TXPOWER]); + int rc; + + rc = phy->set_txpower(phy, txpower); + if (rc < 0) + return rc; + + phy->transmit_power = txpower; + + return 0; +} + +static int phy_set_lbt(struct wpan_phy *phy, struct genl_info *info) +{ + u8 on = !!nla_get_u8(info->attrs[IEEE802154_ATTR_LBT_ENABLED]); + int rc; + + rc = phy->set_lbt(phy, on); + if (rc < 0) + return rc; + + phy->lbt = on; + + return 0; +} + +static int phy_set_cca_mode(struct wpan_phy *phy, struct genl_info *info) +{ + u8 mode = nla_get_u8(info->attrs[IEEE802154_ATTR_CCA_MODE]); + int rc; + + if (mode > 3) + return -EINVAL; + + rc = phy->set_cca_mode(phy, mode); + if (rc < 0) + return rc; + + phy->cca_mode = mode; + + return 0; +} + +static int phy_set_cca_ed_level(struct wpan_phy *phy, struct genl_info *info) +{ + s32 level = nla_get_s32(info->attrs[IEEE802154_ATTR_CCA_ED_LEVEL]); + int rc; + + rc = phy->set_cca_ed_level(phy, level); + if (rc < 0) + return rc; + + phy->cca_ed_level = level; + + return 0; +} + +static int phy_set_csma_params(struct wpan_phy *phy, struct genl_info *info) +{ + int rc; + u8 min_be = phy->min_be; + u8 max_be = phy->max_be; + u8 retries = phy->csma_retries; + + if (info->attrs[IEEE802154_ATTR_CSMA_RETRIES]) + retries = nla_get_u8(info->attrs[IEEE802154_ATTR_CSMA_RETRIES]); + if (info->attrs[IEEE802154_ATTR_CSMA_MIN_BE]) + min_be = nla_get_u8(info->attrs[IEEE802154_ATTR_CSMA_MIN_BE]); + if (info->attrs[IEEE802154_ATTR_CSMA_MAX_BE]) + max_be = nla_get_u8(info->attrs[IEEE802154_ATTR_CSMA_MAX_BE]); + + if (retries > 5 || max_be > 8 || min_be > max_be || + retries < -1 || retries > 7) + return -EINVAL; + + rc = phy->set_csma_params(phy, min_be, max_be, retries); + if (rc < 0) + return rc; + + phy->min_be = min_be; + phy->max_be = max_be; + phy->csma_retries = retries; + + return 0; +} + +static int phy_set_frame_retries(struct wpan_phy *phy, struct genl_info *info) +{ + s8 retries = nla_get_s8(info->attrs[IEEE802154_ATTR_FRAME_RETRIES]); + int rc; + + rc = phy->set_frame_retries(phy, retries); + if (rc < 0) + return rc; + + phy->frame_retries = retries; + + return 0; +} + +int ieee802154_set_phyparams(struct sk_buff *skb, struct genl_info *info) +{ + struct wpan_phy *phy; + const char *name; + int rc = -ENOTSUPP; + + pr_debug("%s\n", __func__); + + if (!info->attrs[IEEE802154_ATTR_PHY_NAME] && + !info->attrs[IEEE802154_ATTR_LBT_ENABLED] && + !info->attrs[IEEE802154_ATTR_CCA_MODE] && + !info->attrs[IEEE802154_ATTR_CCA_ED_LEVEL] && + !info->attrs[IEEE802154_ATTR_CSMA_RETRIES] && + !info->attrs[IEEE802154_ATTR_CSMA_MIN_BE] && + !info->attrs[IEEE802154_ATTR_CSMA_MAX_BE] && + !info->attrs[IEEE802154_ATTR_FRAME_RETRIES]) + return -EINVAL; + + name = nla_data(info->attrs[IEEE802154_ATTR_PHY_NAME]); + if (name[nla_len(info->attrs[IEEE802154_ATTR_PHY_NAME]) - 1] != '\0') + return -EINVAL; /* phy name should be null-terminated */ + + phy = wpan_phy_find(name); + if (!phy) + return -ENODEV; + + if ((!phy->set_txpower && info->attrs[IEEE802154_ATTR_TXPOWER]) || + (!phy->set_lbt && info->attrs[IEEE802154_ATTR_LBT_ENABLED]) || + (!phy->set_cca_mode && info->attrs[IEEE802154_ATTR_CCA_MODE]) || + (!phy->set_cca_ed_level && + info->attrs[IEEE802154_ATTR_CCA_ED_LEVEL])) + goto out; + + mutex_lock(&phy->pib_lock); + + if (info->attrs[IEEE802154_ATTR_TXPOWER]) { + rc = phy_set_txpower(phy, info); + if (rc < 0) + goto error; + } + + if (info->attrs[IEEE802154_ATTR_LBT_ENABLED]) { + rc = phy_set_lbt(phy, info); + if (rc < 0) + goto error; + } + + if (info->attrs[IEEE802154_ATTR_CCA_MODE]) { + rc = phy_set_cca_mode(phy, info); + if (rc < 0) + goto error; + } + + if (info->attrs[IEEE802154_ATTR_CCA_ED_LEVEL]) { + rc = phy_set_cca_ed_level(phy, info); + if (rc < 0) + goto error; + } + + if (info->attrs[IEEE802154_ATTR_CSMA_RETRIES] || + info->attrs[IEEE802154_ATTR_CSMA_MIN_BE] || + info->attrs[IEEE802154_ATTR_CSMA_MAX_BE]) { + rc = phy_set_csma_params(phy, info); + if (rc < 0) + goto error; + } + + if (info->attrs[IEEE802154_ATTR_FRAME_RETRIES]) { + rc = phy_set_frame_retries(phy, info); + if (rc < 0) + goto error; + } + + mutex_unlock(&phy->pib_lock); + + wpan_phy_put(phy); + + return 0; + +error: + mutex_unlock(&phy->pib_lock); +out: + wpan_phy_put(phy); + return rc; +} diff --git a/net/ieee802154/nl_policy.c b/net/ieee802154/nl_policy.c index 6adda4d46f95..fd7be5e45cef 100644 --- a/net/ieee802154/nl_policy.c +++ b/net/ieee802154/nl_policy.c @@ -52,5 +52,15 @@ const struct nla_policy ieee802154_policy[IEEE802154_ATTR_MAX + 1] = { [IEEE802154_ATTR_DURATION] = { .type = NLA_U8, }, [IEEE802154_ATTR_ED_LIST] = { .len = 27 }, [IEEE802154_ATTR_CHANNEL_PAGE_LIST] = { .len = 32 * 4, }, + + [IEEE802154_ATTR_TXPOWER] = { .type = NLA_S8, }, + [IEEE802154_ATTR_LBT_ENABLED] = { .type = NLA_U8, }, + [IEEE802154_ATTR_CCA_MODE] = { .type = NLA_U8, }, + [IEEE802154_ATTR_CCA_ED_LEVEL] = { .type = NLA_S32, }, + [IEEE802154_ATTR_CSMA_RETRIES] = { .type = NLA_U8, }, + [IEEE802154_ATTR_CSMA_MIN_BE] = { .type = NLA_U8, }, + [IEEE802154_ATTR_CSMA_MAX_BE] = { .type = NLA_U8, }, + + [IEEE802154_ATTR_FRAME_RETRIES] = { .type = NLA_S8, }, }; diff --git a/net/ieee802154/wpan-class.c b/net/ieee802154/wpan-class.c index 4dd37615a749..edd0962d55f9 100644 --- a/net/ieee802154/wpan-class.c +++ b/net/ieee802154/wpan-class.c @@ -44,9 +44,7 @@ static DEVICE_ATTR_RO(name); MASTER_SHOW(current_channel, "%d"); MASTER_SHOW(current_page, "%d"); -MASTER_SHOW_COMPLEX(transmit_power, "%d +- %d dB", - ((signed char) (phy->transmit_power << 2)) >> 2, - (phy->transmit_power >> 6) ? (phy->transmit_power >> 6) * 3 : 1); +MASTER_SHOW(transmit_power, "%d +- 1 dB"); MASTER_SHOW(cca_mode, "%d"); static ssize_t channels_supported_show(struct device *dev, @@ -171,6 +169,12 @@ struct wpan_phy *wpan_phy_alloc(size_t priv_size) phy->current_channel = -1; /* not initialised */ phy->current_page = 0; /* for compatibility */ + /* defaults per 802.15.4-2011 */ + phy->min_be = 3; + phy->max_be = 5; + phy->csma_retries = 4; + phy->frame_retries = -1; /* for compatibility, actual default is 3 */ + return phy; out: diff --git a/net/mac802154/ieee802154_dev.c b/net/mac802154/ieee802154_dev.c index 52ae6646a411..b75bb01e5c6b 100644 --- a/net/mac802154/ieee802154_dev.c +++ b/net/mac802154/ieee802154_dev.c @@ -165,6 +165,67 @@ err: return ERR_PTR(err); } +static int mac802154_set_txpower(struct wpan_phy *phy, int db) +{ + struct mac802154_priv *priv = wpan_phy_priv(phy); + + if (!priv->ops->set_txpower) + return -ENOTSUPP; + + return priv->ops->set_txpower(&priv->hw, db); +} + +static int mac802154_set_lbt(struct wpan_phy *phy, bool on) +{ + struct mac802154_priv *priv = wpan_phy_priv(phy); + + if (!priv->ops->set_lbt) + return -ENOTSUPP; + + return priv->ops->set_lbt(&priv->hw, on); +} + +static int mac802154_set_cca_mode(struct wpan_phy *phy, u8 mode) +{ + struct mac802154_priv *priv = wpan_phy_priv(phy); + + if (!priv->ops->set_cca_mode) + return -ENOTSUPP; + + return priv->ops->set_cca_mode(&priv->hw, mode); +} + +static int mac802154_set_cca_ed_level(struct wpan_phy *phy, s32 level) +{ + struct mac802154_priv *priv = wpan_phy_priv(phy); + + if (!priv->ops->set_cca_ed_level) + return -ENOTSUPP; + + return priv->ops->set_cca_ed_level(&priv->hw, level); +} + +static int mac802154_set_csma_params(struct wpan_phy *phy, u8 min_be, + u8 max_be, u8 retries) +{ + struct mac802154_priv *priv = wpan_phy_priv(phy); + + if (!priv->ops->set_csma_params) + return -ENOTSUPP; + + return priv->ops->set_csma_params(&priv->hw, min_be, max_be, retries); +} + +static int mac802154_set_frame_retries(struct wpan_phy *phy, s8 retries) +{ + struct mac802154_priv *priv = wpan_phy_priv(phy); + + if (!priv->ops->set_frame_retries) + return -ENOTSUPP; + + return priv->ops->set_frame_retries(&priv->hw, retries); +} + struct ieee802154_dev * ieee802154_alloc_device(size_t priv_data_len, struct ieee802154_ops *ops) { @@ -242,6 +303,12 @@ int ieee802154_register_device(struct ieee802154_dev *dev) priv->phy->add_iface = mac802154_add_iface; priv->phy->del_iface = mac802154_del_iface; + priv->phy->set_txpower = mac802154_set_txpower; + priv->phy->set_lbt = mac802154_set_lbt; + priv->phy->set_cca_mode = mac802154_set_cca_mode; + priv->phy->set_cca_ed_level = mac802154_set_cca_ed_level; + priv->phy->set_csma_params = mac802154_set_csma_params; + priv->phy->set_frame_retries = mac802154_set_frame_retries; rc = wpan_phy_register(priv->phy); if (rc < 0)