Return-path: Received: from fmmailgate01.web.de ([217.72.192.221]:49769 "EHLO fmmailgate01.web.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751752AbZAKAOV (ORCPT ); Sat, 10 Jan 2009 19:14:21 -0500 From: Christian Lamparter To: linux-wireless@vger.kernel.org Subject: [PATCH v2 2/4] p54: longbow frontend support Date: Sun, 11 Jan 2009 01:14:18 +0100 Cc: Johannes Berg , "John W. Linville" MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Message-Id: <200901110114.19014.chunkeey@web.de> (sfid-20090111_011425_957015_09C6EF1E) Sender: linux-wireless-owner@vger.kernel.org List-ID: This patch adds support for longbow RF chip. Signed-off-by: Christian Lamparter --- diff -Nurp a/drivers/net/wireless/p54/p54common.c b/drivers/net/wireless/p54/p54common.c --- a/drivers/net/wireless/p54/p54common.c 2009-01-11 00:09:38.000000000 +0100 +++ b/drivers/net/wireless/p54/p54common.c 2009-01-11 00:15:05.000000000 +0100 @@ -652,7 +652,7 @@ static int p54_parse_eeprom(struct ieee8 } priv->rxhw = synth & PDR_SYNTH_FRONTEND_MASK; - if (priv->rxhw == 4) + if (priv->rxhw == PDR_SYNTH_FRONTEND_XBOW) p54_init_xbow_synth(dev); if (!(synth & PDR_SYNTH_24_GHZ_DISABLED)) dev->wiphy->bands[IEEE80211_BAND_2GHZ] = &band_2GHz; @@ -705,7 +705,14 @@ static int p54_rssi_to_dbm(struct ieee80 struct p54_common *priv = dev->priv; int band = dev->conf.channel->band; - return ((rssi * priv->rssical_db[band].mul) / 64 + + if (priv->rxhw != PDR_SYNTH_FRONTEND_LONGBOW) + return ((rssi * priv->rssical_db[band].mul) / 64 + + priv->rssical_db[band].add) / 4; + else + /* + * TODO: find the correct formula + */ + return ((rssi * priv->rssical_db[band].mul) / 64 + priv->rssical_db[band].add) / 4; } @@ -1599,8 +1606,13 @@ static int p54_tx(struct ieee80211_hw *d memset(txhdr->durations, 0, sizeof(txhdr->durations)); txhdr->tx_antenna = ((info->antenna_sel_tx == 0) ? 2 : info->antenna_sel_tx - 1) & priv->tx_diversity_mask; - txhdr->output_power = priv->output_power; - txhdr->cts_rate = cts_rate; + if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) { + txhdr->longbow.cts_rate = cts_rate; + txhdr->longbow.output_power = cpu_to_le16(priv->output_power); + } else { + txhdr->normal.output_power = priv->output_power; + txhdr->normal.cts_rate = cts_rate; + } if (padding) txhdr->align[0] = padding; @@ -1702,47 +1714,77 @@ static int p54_scan(struct ieee80211_hw { struct p54_common *priv = dev->priv; struct sk_buff *skb; - struct p54_scan *chan; + struct p54_hdr *hdr; + struct p54_scan_head *head; + struct p54_iq_autocal_entry *iq_autocal; + union p54_scan_body_union *body; + struct p54_scan_tail_rate *rate; + struct pda_rssi_cal_entry *rssi; unsigned int i; void *entry; int band = dev->conf.channel->band; __le16 freq = cpu_to_le16(dev->conf.channel->center_freq); - skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*chan), + skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*head) + + 2 + sizeof(*iq_autocal) + sizeof(*body) + + sizeof(*rate) + 2 * sizeof(*rssi), P54_CONTROL_TYPE_SCAN, GFP_ATOMIC); if (!skb) return -ENOMEM; - chan = (struct p54_scan *) skb_put(skb, sizeof(*chan)); - memset(chan->scan_params, 0, sizeof(chan->scan_params)); - chan->mode = cpu_to_le16(mode); - chan->dwell = cpu_to_le16(dwell); + head = (struct p54_scan_head *) skb_put(skb, sizeof(*head)); + memset(head->scan_params, 0, sizeof(head->scan_params)); + head->mode = cpu_to_le16(mode); + head->dwell = cpu_to_le16(dwell); + head->freq = freq; + + if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) { + __le16 *pa_power_points = (__le16 *) skb_put(skb, 2); + *pa_power_points = cpu_to_le16(0x0c); + } + iq_autocal = (void *) skb_put(skb, sizeof(*iq_autocal)); for (i = 0; i < priv->iq_autocal_len; i++) { if (priv->iq_autocal[i].freq != freq) continue; - memcpy(&chan->iq_autocal, &priv->iq_autocal[i], - sizeof(*priv->iq_autocal)); + memcpy(iq_autocal, &priv->iq_autocal[i].params, + sizeof(struct p54_iq_autocal_entry)); break; } if (i == priv->iq_autocal_len) goto err; + if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) + body = (void *) skb_put(skb, sizeof(body->longbow)); + else + body = (void *) skb_put(skb, sizeof(body->normal)); + for (i = 0; i < priv->output_limit->entries; i++) { - struct pda_channel_output_limit *limits; __le16 *entry_freq = (void *) (priv->output_limit->data + - priv->output_limit->entry_size * i); + priv->output_limit->entry_size * i); if (*entry_freq != freq) continue; - limits = (void *) entry_freq; - chan->val_barker = 0x38; - chan->val_bpsk = chan->dup_bpsk = limits->val_bpsk; - chan->val_qpsk = chan->dup_qpsk = limits->val_qpsk; - chan->val_16qam = chan->dup_16qam = limits->val_16qam; - chan->val_64qam = chan->dup_64qam = limits->val_64qam; + if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) { + memcpy(&body->longbow.power_limits, + (void *) entry_freq + sizeof(__le16), + priv->output_limit->entry_size); + } else { + struct pda_channel_output_limit *limits = + (void *) entry_freq; + + body->normal.val_barker = 0x38; + body->normal.val_bpsk = body->normal.dup_bpsk = + limits->val_bpsk; + body->normal.val_qpsk = body->normal.dup_qpsk = + limits->val_qpsk; + body->normal.val_16qam = body->normal.dup_16qam = + limits->val_16qam; + body->normal.val_64qam = body->normal.dup_64qam = + limits->val_64qam; + } break; } if (i == priv->output_limit->entries) @@ -1750,34 +1792,59 @@ static int p54_scan(struct ieee80211_hw entry = (void *)(priv->curve_data->data + priv->curve_data->offset); for (i = 0; i < priv->curve_data->entries; i++) { - struct pda_pa_curve_data *curve_data; if (*((__le16 *)entry) != freq) { entry += priv->curve_data->entry_size; continue; } - entry += sizeof(__le16); - chan->pa_points_per_curve = 8; - memset(chan->curve_data, 0, sizeof(*chan->curve_data)); - curve_data = (void *) priv->curve_data->data; - - memcpy(chan->curve_data, entry, - sizeof(struct p54_pa_curve_data_sample) * - min_t(u8, 8, curve_data->points_per_channel)); + if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) { + memcpy(&body->longbow.curve_data, + (void *) entry + sizeof(__le16), + priv->curve_data->entry_size); + } else { + struct p54_scan_body *chan = &body->normal; + struct pda_pa_curve_data *curve_data = + (void *) priv->curve_data->data; + + entry += sizeof(__le16); + chan->pa_points_per_curve = 8; + memset(chan->curve_data, 0, sizeof(*chan->curve_data)); + memcpy(chan->curve_data, entry, + sizeof(struct p54_pa_curve_data_sample) * + min((u8)8, curve_data->points_per_channel)); + } break; } if (i == priv->curve_data->entries) goto err; - if (priv->fw_var < 0x500) { - chan->v1_rssi.mul = cpu_to_le16(priv->rssical_db[band].mul); - chan->v1_rssi.add = cpu_to_le16(priv->rssical_db[band].add); - } else { - chan->v2.rssi.mul = cpu_to_le16(priv->rssical_db[band].mul); - chan->v2.rssi.add = cpu_to_le16(priv->rssical_db[band].add); - chan->v2.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask); - memset(chan->v2.rts_rates, 0, 8); + if ((priv->fw_var >= 0x500) && (priv->fw_var < 0x509)) { + rate = (void *) skb_put(skb, sizeof(*rate)); + rate->basic_rate_mask = cpu_to_le32(priv->basic_rate_mask); + for (i = 0; i < sizeof(rate->rts_rates); i++) + rate->rts_rates[i] = i; + } + + rssi = (struct pda_rssi_cal_entry *) skb_put(skb, sizeof(*rssi)); + rssi->mul = cpu_to_le16(priv->rssical_db[band].mul); + rssi->add = cpu_to_le16(priv->rssical_db[band].add); + if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) { + /* Longbow frontend needs ever more */ + rssi = (void *) skb_put(skb, sizeof(*rssi)); + rssi->mul = cpu_to_le16(priv->rssical_db[band].longbow_unkn); + rssi->add = cpu_to_le16(priv->rssical_db[band].longbow_unk2); + } + + if (priv->fw_var >= 0x509) { + rate = (void *) skb_put(skb, sizeof(*rate)); + rate->basic_rate_mask = cpu_to_le32(priv->basic_rate_mask); + for (i = 0; i < sizeof(rate->rts_rates); i++) + rate->rts_rates[i] = i; } + + hdr = (struct p54_hdr *) skb->data; + hdr->len = cpu_to_le16(skb->len - sizeof(*hdr)); + priv->tx(dev, skb); return 0; diff -Nurp a/drivers/net/wireless/p54/p54common.h b/drivers/net/wireless/p54/p54common.h --- a/drivers/net/wireless/p54/p54common.h 2009-01-10 23:28:18.000000000 +0100 +++ b/drivers/net/wireless/p54/p54common.h 2009-01-10 23:32:03.000000000 +0100 @@ -26,6 +26,11 @@ struct bootrec { } __attribute__((packed)); #define PDR_SYNTH_FRONTEND_MASK 0x0007 +#define PDR_SYNTH_FRONTEND_DUETTE3 0x0001 +#define PDR_SYNTH_FRONTEND_DUETTE2 0x0002 +#define PDR_SYNTH_FRONTEND_FRISBEE 0x0003 +#define PDR_SYNTH_FRONTEND_XBOW 0x0004 +#define PDR_SYNTH_FRONTEND_LONGBOW 0x0005 #define PDR_SYNTH_IQ_CAL_MASK 0x0018 #define PDR_SYNTH_IQ_CAL_PA_DETECTOR 0x0000 #define PDR_SYNTH_IQ_CAL_DISABLED 0x0008 @@ -125,9 +130,13 @@ struct eeprom_pda_wrap { u8 data[0]; } __attribute__ ((packed)); +struct p54_iq_autocal_entry { + __le16 iq_param[4]; +} __attribute__ ((packed)); + struct pda_iq_autocal_entry { __le16 freq; - __le16 iq_param[4]; + struct p54_iq_autocal_entry params; } __attribute__ ((packed)); struct pda_channel_output_limit { @@ -186,6 +195,21 @@ struct pda_country { u8 flags; } __attribute__ ((packed)); +/* + * Warning: Longbow's structures are bogus. + */ +struct p54_channel_output_limit_longbow { + __le16 rf_power_points[12]; +} __attribute__ ((packed)); + +struct p54_pa_curve_data_sample_longbow { + __le16 rf_power; + __le16 pa_detector; + struct { + __le16 data[4]; + } points[3] __attribute__ ((packed)); +} __attribute__ ((packed)); + struct pda_custom_wrapper { __le16 entries; __le16 entry_size; @@ -381,9 +405,18 @@ struct p54_tx_data { u8 backlog; __le16 durations[4]; u8 tx_antenna; - u8 output_power; - u8 cts_rate; - u8 unalloc2[3]; + union { + struct { + u8 cts_rate; + __le16 output_power; + } __attribute__((packed)) longbow; + struct { + u8 output_power; + u8 cts_rate; + u8 unalloc; + } __attribute__ ((packed)) normal; + } __attribute__ ((packed)); + u8 unalloc2[2]; u8 align[0]; } __attribute__ ((packed)); @@ -444,11 +477,14 @@ struct p54_setup_mac { #define P54_SCAN_ACTIVE BIT(2) #define P54_SCAN_FILTER BIT(3) -struct p54_scan { +struct p54_scan_head { __le16 mode; __le16 dwell; u8 scan_params[20]; - struct pda_iq_autocal_entry iq_autocal; + __le16 freq; +} __attribute__ ((packed)); + +struct p54_scan_body { u8 pa_points_per_curve; u8 val_barker; u8 val_bpsk; @@ -460,19 +496,23 @@ struct p54_scan { u8 dup_qpsk; u8 dup_16qam; u8 dup_64qam; - union { - struct pda_rssi_cal_entry v1_rssi; +} __attribute__ ((packed)); - struct { - __le32 basic_rate_mask; - u8 rts_rates[8]; - struct pda_rssi_cal_entry rssi; - } v2 __attribute__ ((packed)); - } __attribute__ ((packed)); +struct p54_scan_body_longbow { + struct p54_channel_output_limit_longbow power_limits; + struct p54_pa_curve_data_sample_longbow curve_data[8]; + __le16 unkn[6]; /* maybe more power_limits or rate_mask */ } __attribute__ ((packed)); -#define P54_SCAN_V1_LEN 0x70 -#define P54_SCAN_V2_LEN 0x7c +union p54_scan_body_union { + struct p54_scan_body normal; + struct p54_scan_body_longbow longbow; +} __attribute__ ((packed)); + +struct p54_scan_tail_rate { + __le32 basic_rate_mask; + u8 rts_rates[8]; +} __attribute__ ((packed)); struct p54_led { __le16 mode;