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/drivers/net/ethernet/atheros/atl1e/atl1e_param.c

http://github.com/mirrors/linux
C | 256 lines | 179 code | 26 blank | 51 comment | 17 complexity | 9198cd07b4140ba3c1eb949f672669a7 MD5 | raw file
  1// SPDX-License-Identifier: GPL-2.0-or-later
  2/*
  3 * Copyright(c) 2007 Atheros Corporation. All rights reserved.
  4 *
  5 * Derived from Intel e1000 driver
  6 * Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved.
  7 */
  8
  9#include <linux/netdevice.h>
 10
 11#include "atl1e.h"
 12
 13/* This is the only thing that needs to be changed to adjust the
 14 * maximum number of ports that the driver can manage.
 15 */
 16
 17#define ATL1E_MAX_NIC 32
 18
 19#define OPTION_UNSET    -1
 20#define OPTION_DISABLED 0
 21#define OPTION_ENABLED  1
 22
 23/* All parameters are treated the same, as an integer array of values.
 24 * This macro just reduces the need to repeat the same declaration code
 25 * over and over (plus this helps to avoid typo bugs).
 26 */
 27#define ATL1E_PARAM_INIT { [0 ... ATL1E_MAX_NIC] = OPTION_UNSET }
 28
 29#define ATL1E_PARAM(x, desc) \
 30	static int x[ATL1E_MAX_NIC + 1] = ATL1E_PARAM_INIT; \
 31	static unsigned int num_##x; \
 32	module_param_array_named(x, x, int, &num_##x, 0); \
 33	MODULE_PARM_DESC(x, desc);
 34
 35/* Transmit Memory count
 36 *
 37 * Valid Range: 64-2048
 38 *
 39 * Default Value: 128
 40 */
 41#define ATL1E_MIN_TX_DESC_CNT		32
 42#define ATL1E_MAX_TX_DESC_CNT		1020
 43#define ATL1E_DEFAULT_TX_DESC_CNT	128
 44ATL1E_PARAM(tx_desc_cnt, "Transmit description count");
 45
 46/* Receive Memory Block Count
 47 *
 48 * Valid Range: 16-512
 49 *
 50 * Default Value: 128
 51 */
 52#define ATL1E_MIN_RX_MEM_SIZE		8    /* 8KB   */
 53#define ATL1E_MAX_RX_MEM_SIZE		1024 /* 1MB   */
 54#define ATL1E_DEFAULT_RX_MEM_SIZE	256  /* 128KB */
 55ATL1E_PARAM(rx_mem_size, "memory size of rx buffer(KB)");
 56
 57/* User Specified MediaType Override
 58 *
 59 * Valid Range: 0-5
 60 *  - 0    - auto-negotiate at all supported speeds
 61 *  - 1    - only link at 100Mbps Full Duplex
 62 *  - 2    - only link at 100Mbps Half Duplex
 63 *  - 3    - only link at 10Mbps Full Duplex
 64 *  - 4    - only link at 10Mbps Half Duplex
 65 * Default Value: 0
 66 */
 67
 68ATL1E_PARAM(media_type, "MediaType Select");
 69
 70/* Interrupt Moderate Timer in units of 2 us
 71 *
 72 * Valid Range: 10-65535
 73 *
 74 * Default Value: 45000(90ms)
 75 */
 76#define INT_MOD_DEFAULT_CNT             100 /* 200us */
 77#define INT_MOD_MAX_CNT                 65000
 78#define INT_MOD_MIN_CNT                 50
 79ATL1E_PARAM(int_mod_timer, "Interrupt Moderator Timer");
 80
 81#define AUTONEG_ADV_DEFAULT  0x2F
 82#define AUTONEG_ADV_MASK     0x2F
 83#define FLOW_CONTROL_DEFAULT FLOW_CONTROL_FULL
 84
 85#define FLASH_VENDOR_DEFAULT    0
 86#define FLASH_VENDOR_MIN        0
 87#define FLASH_VENDOR_MAX        2
 88
 89struct atl1e_option {
 90	enum { enable_option, range_option, list_option } type;
 91	char *name;
 92	char *err;
 93	int  def;
 94	union {
 95		struct { /* range_option info */
 96			int min;
 97			int max;
 98		} r;
 99		struct { /* list_option info */
100			int nr;
101			struct atl1e_opt_list { int i; char *str; } *p;
102		} l;
103	} arg;
104};
105
106static int atl1e_validate_option(int *value, struct atl1e_option *opt,
107				 struct atl1e_adapter *adapter)
108{
109	if (*value == OPTION_UNSET) {
110		*value = opt->def;
111		return 0;
112	}
113
114	switch (opt->type) {
115	case enable_option:
116		switch (*value) {
117		case OPTION_ENABLED:
118			netdev_info(adapter->netdev,
119				    "%s Enabled\n", opt->name);
120			return 0;
121		case OPTION_DISABLED:
122			netdev_info(adapter->netdev,
123				    "%s Disabled\n", opt->name);
124			return 0;
125		}
126		break;
127	case range_option:
128		if (*value >= opt->arg.r.min && *value <= opt->arg.r.max) {
129			netdev_info(adapter->netdev, "%s set to %i\n",
130				    opt->name, *value);
131			return 0;
132		}
133		break;
134	case list_option:{
135			int i;
136			struct atl1e_opt_list *ent;
137
138			for (i = 0; i < opt->arg.l.nr; i++) {
139				ent = &opt->arg.l.p[i];
140				if (*value == ent->i) {
141					if (ent->str[0] != '\0')
142						netdev_info(adapter->netdev,
143							    "%s\n", ent->str);
144					return 0;
145				}
146			}
147			break;
148		}
149	default:
150		BUG();
151	}
152
153	netdev_info(adapter->netdev, "Invalid %s specified (%i) %s\n",
154		    opt->name, *value, opt->err);
155	*value = opt->def;
156	return -1;
157}
158
159/**
160 * atl1e_check_options - Range Checking for Command Line Parameters
161 * @adapter: board private structure
162 *
163 * This routine checks all command line parameters for valid user
164 * input.  If an invalid value is given, or if no user specified
165 * value exists, a default value is used.  The final value is stored
166 * in a variable in the adapter structure.
167 */
168void atl1e_check_options(struct atl1e_adapter *adapter)
169{
170	int bd = adapter->bd_number;
171
172	if (bd >= ATL1E_MAX_NIC) {
173		netdev_notice(adapter->netdev,
174			      "no configuration for board #%i\n", bd);
175		netdev_notice(adapter->netdev,
176			      "Using defaults for all values\n");
177	}
178
179	{ 		/* Transmit Ring Size */
180		struct atl1e_option opt = {
181			.type = range_option,
182			.name = "Transmit Ddescription Count",
183			.err  = "using default of "
184				__MODULE_STRING(ATL1E_DEFAULT_TX_DESC_CNT),
185			.def  = ATL1E_DEFAULT_TX_DESC_CNT,
186			.arg  = { .r = { .min = ATL1E_MIN_TX_DESC_CNT,
187					 .max = ATL1E_MAX_TX_DESC_CNT} }
188		};
189		int val;
190		if (num_tx_desc_cnt > bd) {
191			val = tx_desc_cnt[bd];
192			atl1e_validate_option(&val, &opt, adapter);
193			adapter->tx_ring.count = (u16) val & 0xFFFC;
194		} else
195			adapter->tx_ring.count = (u16)opt.def;
196	}
197
198	{ 		/* Receive Memory Block Count */
199		struct atl1e_option opt = {
200			.type = range_option,
201			.name = "Memory size of rx buffer(KB)",
202			.err  = "using default of "
203				__MODULE_STRING(ATL1E_DEFAULT_RX_MEM_SIZE),
204			.def  = ATL1E_DEFAULT_RX_MEM_SIZE,
205			.arg  = { .r = { .min = ATL1E_MIN_RX_MEM_SIZE,
206					 .max = ATL1E_MAX_RX_MEM_SIZE} }
207		};
208		int val;
209		if (num_rx_mem_size > bd) {
210			val = rx_mem_size[bd];
211			atl1e_validate_option(&val, &opt, adapter);
212			adapter->rx_ring.page_size = (u32)val * 1024;
213		} else {
214			adapter->rx_ring.page_size = (u32)opt.def * 1024;
215		}
216	}
217
218	{ 		/* Interrupt Moderate Timer */
219		struct atl1e_option opt = {
220			.type = range_option,
221			.name = "Interrupt Moderate Timer",
222			.err  = "using default of "
223				__MODULE_STRING(INT_MOD_DEFAULT_CNT),
224			.def  = INT_MOD_DEFAULT_CNT,
225			.arg  = { .r = { .min = INT_MOD_MIN_CNT,
226					 .max = INT_MOD_MAX_CNT} }
227		} ;
228		int val;
229		if (num_int_mod_timer > bd) {
230			val = int_mod_timer[bd];
231			atl1e_validate_option(&val, &opt, adapter);
232			adapter->hw.imt = (u16) val;
233		} else
234			adapter->hw.imt = (u16)(opt.def);
235	}
236
237	{ 		/* MediaType */
238		struct atl1e_option opt = {
239			.type = range_option,
240			.name = "Speed/Duplex Selection",
241			.err  = "using default of "
242				__MODULE_STRING(MEDIA_TYPE_AUTO_SENSOR),
243			.def  = MEDIA_TYPE_AUTO_SENSOR,
244			.arg  = { .r = { .min = MEDIA_TYPE_AUTO_SENSOR,
245					 .max = MEDIA_TYPE_10M_HALF} }
246		} ;
247		int val;
248		if (num_media_type > bd) {
249			val = media_type[bd];
250			atl1e_validate_option(&val, &opt, adapter);
251			adapter->hw.media_type = (u16) val;
252		} else
253			adapter->hw.media_type = (u16)(opt.def);
254
255	}
256}