drivers/net/wireless/zydas/zd1211rw/zd_mac.c

Source file repositories/reference/linux-study-clean/drivers/net/wireless/zydas/zd1211rw/zd_mac.c

File Facts

System
Linux kernel
Corpus path
drivers/net/wireless/zydas/zd1211rw/zd_mac.c
Extension
.c
Size
40959 bytes
Lines
1547
Domain
Driver Families
Bucket
drivers/net
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

struct zd_reg_alpha2_map {
	u32 reg;
	char alpha2[2] __nonstring;
};

static struct zd_reg_alpha2_map reg_alpha2_map[] = {
	{ ZD_REGDOMAIN_FCC, "US" },
	{ ZD_REGDOMAIN_IC, "CA" },
	{ ZD_REGDOMAIN_ETSI, "DE" }, /* Generic ETSI, use most restrictive */
	{ ZD_REGDOMAIN_JAPAN, "JP" },
	{ ZD_REGDOMAIN_JAPAN_2, "JP" },
	{ ZD_REGDOMAIN_JAPAN_3, "JP" },
	{ ZD_REGDOMAIN_SPAIN, "ES" },
	{ ZD_REGDOMAIN_FRANCE, "FR" },
};

/* This table contains the hardware specific values for the modulation rates. */
static const struct ieee80211_rate zd_rates[] = {
	{ .bitrate = 10,
	  .hw_value = ZD_CCK_RATE_1M, },
	{ .bitrate = 20,
	  .hw_value = ZD_CCK_RATE_2M,
	  .hw_value_short = ZD_CCK_RATE_2M | ZD_CCK_PREA_SHORT,
	  .flags = IEEE80211_RATE_SHORT_PREAMBLE },
	{ .bitrate = 55,
	  .hw_value = ZD_CCK_RATE_5_5M,
	  .hw_value_short = ZD_CCK_RATE_5_5M | ZD_CCK_PREA_SHORT,
	  .flags = IEEE80211_RATE_SHORT_PREAMBLE },
	{ .bitrate = 110,
	  .hw_value = ZD_CCK_RATE_11M,
	  .hw_value_short = ZD_CCK_RATE_11M | ZD_CCK_PREA_SHORT,
	  .flags = IEEE80211_RATE_SHORT_PREAMBLE },
	{ .bitrate = 60,
	  .hw_value = ZD_OFDM_RATE_6M,
	  .flags = 0 },
	{ .bitrate = 90,
	  .hw_value = ZD_OFDM_RATE_9M,
	  .flags = 0 },
	{ .bitrate = 120,
	  .hw_value = ZD_OFDM_RATE_12M,
	  .flags = 0 },
	{ .bitrate = 180,
	  .hw_value = ZD_OFDM_RATE_18M,
	  .flags = 0 },
	{ .bitrate = 240,
	  .hw_value = ZD_OFDM_RATE_24M,
	  .flags = 0 },
	{ .bitrate = 360,
	  .hw_value = ZD_OFDM_RATE_36M,
	  .flags = 0 },
	{ .bitrate = 480,
	  .hw_value = ZD_OFDM_RATE_48M,
	  .flags = 0 },
	{ .bitrate = 540,
	  .hw_value = ZD_OFDM_RATE_54M,
	  .flags = 0 },
};

/*
 * Zydas retry rates table. Each line is listed in the same order as
 * in zd_rates[] and contains all the rate used when a packet is sent
 * starting with a given rates. Let's consider an example :
 *
 * "11 Mbits : 4, 3, 2, 1, 0" means :
 * - packet is sent using 4 different rates
 * - 1st rate is index 3 (ie 11 Mbits)
 * - 2nd rate is index 2 (ie 5.5 Mbits)
 * - 3rd rate is index 1 (ie 2 Mbits)
 * - 4th rate is index 0 (ie 1 Mbits)
 */

static const struct tx_retry_rate zd_retry_rates[] = {
	{ /*  1 Mbits */	1, { 0 }},
	{ /*  2 Mbits */	2, { 1,  0 }},
	{ /*  5.5 Mbits */	3, { 2,  1, 0 }},
	{ /* 11 Mbits */	4, { 3,  2, 1, 0 }},
	{ /*  6 Mbits */	5, { 4,  3, 2, 1, 0 }},
	{ /*  9 Mbits */	6, { 5,  4, 3, 2, 1, 0}},
	{ /* 12 Mbits */	5, { 6,  3, 2, 1, 0 }},
	{ /* 18 Mbits */	6, { 7,  6, 3, 2, 1, 0 }},
	{ /* 24 Mbits */	6, { 8,  6, 3, 2, 1, 0 }},
	{ /* 36 Mbits */	7, { 9,  8, 6, 3, 2, 1, 0 }},
	{ /* 48 Mbits */	8, {10,  9, 8, 6, 3, 2, 1, 0 }},
	{ /* 54 Mbits */	9, {11, 10, 9, 8, 6, 3, 2, 1, 0 }}
};

static const struct ieee80211_channel zd_channels[] = {
	{ .center_freq = 2412, .hw_value = 1 },
	{ .center_freq = 2417, .hw_value = 2 },
	{ .center_freq = 2422, .hw_value = 3 },

Annotation

Implementation Notes