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1a59d1b8 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
305282ba JC |
2 | /* atlx.c -- common functions for Attansic network drivers |
3 | * | |
4 | * Copyright(c) 2005 - 2006 Attansic Corporation. All rights reserved. | |
5 | * Copyright(c) 2006 - 2007 Chris Snook <csnook@redhat.com> | |
e8f720fd | 6 | * Copyright(c) 2006 - 2008 Jay Cliburn <jcliburn@gmail.com> |
305282ba JC |
7 | * Copyright(c) 2007 Atheros Corporation. All rights reserved. |
8 | * | |
9 | * Derived from Intel e1000 driver | |
10 | * Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved. | |
305282ba JC |
11 | */ |
12 | ||
13 | /* Including this file like a header is a temporary hack, I promise. -- CHS */ | |
14 | #ifndef ATLX_C | |
15 | #define ATLX_C | |
16 | ||
17 | #include <linux/device.h> | |
18 | #include <linux/errno.h> | |
19 | #include <linux/etherdevice.h> | |
20 | #include <linux/if.h> | |
21 | #include <linux/netdevice.h> | |
22 | #include <linux/socket.h> | |
23 | #include <linux/sockios.h> | |
24 | #include <linux/spinlock.h> | |
25 | #include <linux/string.h> | |
26 | #include <linux/types.h> | |
27 | #include <linux/workqueue.h> | |
28 | ||
29 | #include "atlx.h" | |
30 | ||
ff2d8d6c | 31 | static s32 atlx_read_phy_reg(struct atl1_hw *hw, u16 reg_addr, u16 *phy_data); |
32 | static u32 atlx_hash_mc_addr(struct atl1_hw *hw, u8 *mc_addr); | |
33 | static void atlx_set_mac_addr(struct atl1_hw *hw); | |
34 | ||
305282ba JC |
35 | static struct atlx_spi_flash_dev flash_table[] = { |
36 | /* MFR_NAME WRSR READ PRGM WREN WRDI RDSR RDID SEC_ERS CHIP_ERS */ | |
37 | {"Atmel", 0x00, 0x03, 0x02, 0x06, 0x04, 0x05, 0x15, 0x52, 0x62}, | |
38 | {"SST", 0x01, 0x03, 0x02, 0x06, 0x04, 0x05, 0x90, 0x20, 0x60}, | |
39 | {"ST", 0x01, 0x03, 0x02, 0x06, 0x04, 0x05, 0xAB, 0xD8, 0xC7}, | |
40 | }; | |
41 | ||
42 | static int atlx_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
43 | { | |
44 | switch (cmd) { | |
45 | case SIOCGMIIPHY: | |
46 | case SIOCGMIIREG: | |
47 | case SIOCSMIIREG: | |
48 | return atlx_mii_ioctl(netdev, ifr, cmd); | |
49 | default: | |
50 | return -EOPNOTSUPP; | |
51 | } | |
52 | } | |
53 | ||
49ce9c2c | 54 | /** |
305282ba JC |
55 | * atlx_set_mac - Change the Ethernet Address of the NIC |
56 | * @netdev: network interface device structure | |
57 | * @p: pointer to an address structure | |
58 | * | |
59 | * Returns 0 on success, negative on failure | |
60 | */ | |
61 | static int atlx_set_mac(struct net_device *netdev, void *p) | |
62 | { | |
63 | struct atlx_adapter *adapter = netdev_priv(netdev); | |
64 | struct sockaddr *addr = p; | |
65 | ||
66 | if (netif_running(netdev)) | |
67 | return -EBUSY; | |
68 | ||
69 | if (!is_valid_ether_addr(addr->sa_data)) | |
70 | return -EADDRNOTAVAIL; | |
71 | ||
72 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
73 | memcpy(adapter->hw.mac_addr, addr->sa_data, netdev->addr_len); | |
74 | ||
75 | atlx_set_mac_addr(&adapter->hw); | |
76 | return 0; | |
77 | } | |
78 | ||
79 | static void atlx_check_for_link(struct atlx_adapter *adapter) | |
80 | { | |
81 | struct net_device *netdev = adapter->netdev; | |
82 | u16 phy_data = 0; | |
83 | ||
84 | spin_lock(&adapter->lock); | |
85 | adapter->phy_timer_pending = false; | |
86 | atlx_read_phy_reg(&adapter->hw, MII_BMSR, &phy_data); | |
87 | atlx_read_phy_reg(&adapter->hw, MII_BMSR, &phy_data); | |
88 | spin_unlock(&adapter->lock); | |
89 | ||
90 | /* notify upper layer link down ASAP */ | |
91 | if (!(phy_data & BMSR_LSTATUS)) { | |
92 | /* Link Down */ | |
93 | if (netif_carrier_ok(netdev)) { | |
94 | /* old link state: Up */ | |
95 | dev_info(&adapter->pdev->dev, "%s link is down\n", | |
96 | netdev->name); | |
97 | adapter->link_speed = SPEED_0; | |
98 | netif_carrier_off(netdev); | |
305282ba JC |
99 | } |
100 | } | |
101 | schedule_work(&adapter->link_chg_task); | |
102 | } | |
103 | ||
49ce9c2c | 104 | /** |
305282ba JC |
105 | * atlx_set_multi - Multicast and Promiscuous mode set |
106 | * @netdev: network interface device structure | |
107 | * | |
108 | * The set_multi entry point is called whenever the multicast address | |
109 | * list or the network interface flags are updated. This routine is | |
110 | * responsible for configuring the hardware for proper multicast, | |
111 | * promiscuous mode, and all-multi behavior. | |
112 | */ | |
113 | static void atlx_set_multi(struct net_device *netdev) | |
114 | { | |
115 | struct atlx_adapter *adapter = netdev_priv(netdev); | |
116 | struct atlx_hw *hw = &adapter->hw; | |
22bedad3 | 117 | struct netdev_hw_addr *ha; |
305282ba JC |
118 | u32 rctl; |
119 | u32 hash_value; | |
120 | ||
121 | /* Check for Promiscuous and All Multicast modes */ | |
122 | rctl = ioread32(hw->hw_addr + REG_MAC_CTRL); | |
123 | if (netdev->flags & IFF_PROMISC) | |
124 | rctl |= MAC_CTRL_PROMIS_EN; | |
125 | else if (netdev->flags & IFF_ALLMULTI) { | |
126 | rctl |= MAC_CTRL_MC_ALL_EN; | |
127 | rctl &= ~MAC_CTRL_PROMIS_EN; | |
128 | } else | |
129 | rctl &= ~(MAC_CTRL_PROMIS_EN | MAC_CTRL_MC_ALL_EN); | |
130 | ||
131 | iowrite32(rctl, hw->hw_addr + REG_MAC_CTRL); | |
132 | ||
133 | /* clear the old settings from the multicast hash table */ | |
134 | iowrite32(0, hw->hw_addr + REG_RX_HASH_TABLE); | |
135 | iowrite32(0, (hw->hw_addr + REG_RX_HASH_TABLE) + (1 << 2)); | |
136 | ||
137 | /* compute mc addresses' hash value ,and put it into hash table */ | |
22bedad3 JP |
138 | netdev_for_each_mc_addr(ha, netdev) { |
139 | hash_value = atlx_hash_mc_addr(hw, ha->addr); | |
305282ba JC |
140 | atlx_hash_set(hw, hash_value); |
141 | } | |
142 | } | |
143 | ||
02d5d11b TZ |
144 | static inline void atlx_imr_set(struct atlx_adapter *adapter, |
145 | unsigned int imr) | |
146 | { | |
147 | iowrite32(imr, adapter->hw.hw_addr + REG_IMR); | |
148 | ioread32(adapter->hw.hw_addr + REG_IMR); | |
149 | } | |
150 | ||
49ce9c2c | 151 | /** |
305282ba JC |
152 | * atlx_irq_enable - Enable default interrupt generation settings |
153 | * @adapter: board private structure | |
154 | */ | |
155 | static void atlx_irq_enable(struct atlx_adapter *adapter) | |
156 | { | |
02d5d11b | 157 | atlx_imr_set(adapter, IMR_NORMAL_MASK); |
aa45ba90 | 158 | adapter->int_enabled = true; |
305282ba JC |
159 | } |
160 | ||
49ce9c2c | 161 | /** |
305282ba JC |
162 | * atlx_irq_disable - Mask off interrupt generation on the NIC |
163 | * @adapter: board private structure | |
164 | */ | |
165 | static void atlx_irq_disable(struct atlx_adapter *adapter) | |
166 | { | |
aa45ba90 | 167 | adapter->int_enabled = false; |
02d5d11b | 168 | atlx_imr_set(adapter, 0); |
305282ba JC |
169 | synchronize_irq(adapter->pdev->irq); |
170 | } | |
171 | ||
172 | static void atlx_clear_phy_int(struct atlx_adapter *adapter) | |
173 | { | |
174 | u16 phy_data; | |
175 | unsigned long flags; | |
176 | ||
177 | spin_lock_irqsave(&adapter->lock, flags); | |
178 | atlx_read_phy_reg(&adapter->hw, 19, &phy_data); | |
179 | spin_unlock_irqrestore(&adapter->lock, flags); | |
180 | } | |
181 | ||
49ce9c2c | 182 | /** |
305282ba JC |
183 | * atlx_tx_timeout - Respond to a Tx Hang |
184 | * @netdev: network interface device structure | |
185 | */ | |
0290bd29 | 186 | static void atlx_tx_timeout(struct net_device *netdev, unsigned int txqueue) |
305282ba JC |
187 | { |
188 | struct atlx_adapter *adapter = netdev_priv(netdev); | |
189 | /* Do the reset outside of interrupt context */ | |
03662e41 | 190 | schedule_work(&adapter->reset_dev_task); |
305282ba JC |
191 | } |
192 | ||
193 | /* | |
194 | * atlx_link_chg_task - deal with link change event Out of interrupt context | |
195 | */ | |
196 | static void atlx_link_chg_task(struct work_struct *work) | |
197 | { | |
198 | struct atlx_adapter *adapter; | |
199 | unsigned long flags; | |
200 | ||
201 | adapter = container_of(work, struct atlx_adapter, link_chg_task); | |
202 | ||
203 | spin_lock_irqsave(&adapter->lock, flags); | |
204 | atlx_check_link(adapter); | |
205 | spin_unlock_irqrestore(&adapter->lock, flags); | |
206 | } | |
207 | ||
c8f44aff | 208 | static void __atlx_vlan_mode(netdev_features_t features, u32 *ctrl) |
92491709 | 209 | { |
f646968f | 210 | if (features & NETIF_F_HW_VLAN_CTAG_RX) { |
92491709 JP |
211 | /* enable VLAN tag insert/strip */ |
212 | *ctrl |= MAC_CTRL_RMV_VLAN; | |
213 | } else { | |
214 | /* disable VLAN tag insert/strip */ | |
215 | *ctrl &= ~MAC_CTRL_RMV_VLAN; | |
216 | } | |
217 | } | |
218 | ||
c8f44aff MM |
219 | static void atlx_vlan_mode(struct net_device *netdev, |
220 | netdev_features_t features) | |
305282ba JC |
221 | { |
222 | struct atlx_adapter *adapter = netdev_priv(netdev); | |
223 | unsigned long flags; | |
224 | u32 ctrl; | |
225 | ||
226 | spin_lock_irqsave(&adapter->lock, flags); | |
227 | /* atlx_irq_disable(adapter); FIXME: confirm/remove */ | |
92491709 JP |
228 | ctrl = ioread32(adapter->hw.hw_addr + REG_MAC_CTRL); |
229 | __atlx_vlan_mode(features, &ctrl); | |
230 | iowrite32(ctrl, adapter->hw.hw_addr + REG_MAC_CTRL); | |
305282ba JC |
231 | /* atlx_irq_enable(adapter); FIXME */ |
232 | spin_unlock_irqrestore(&adapter->lock, flags); | |
233 | } | |
234 | ||
235 | static void atlx_restore_vlan(struct atlx_adapter *adapter) | |
236 | { | |
92491709 JP |
237 | atlx_vlan_mode(adapter->netdev, adapter->netdev->features); |
238 | } | |
239 | ||
c8f44aff MM |
240 | static netdev_features_t atlx_fix_features(struct net_device *netdev, |
241 | netdev_features_t features) | |
92491709 JP |
242 | { |
243 | /* | |
244 | * Since there is no support for separate rx/tx vlan accel | |
245 | * enable/disable make sure tx flag is always in same state as rx. | |
246 | */ | |
f646968f PM |
247 | if (features & NETIF_F_HW_VLAN_CTAG_RX) |
248 | features |= NETIF_F_HW_VLAN_CTAG_TX; | |
92491709 | 249 | else |
f646968f | 250 | features &= ~NETIF_F_HW_VLAN_CTAG_TX; |
92491709 JP |
251 | |
252 | return features; | |
253 | } | |
254 | ||
c8f44aff MM |
255 | static int atlx_set_features(struct net_device *netdev, |
256 | netdev_features_t features) | |
92491709 | 257 | { |
c8f44aff | 258 | netdev_features_t changed = netdev->features ^ features; |
92491709 | 259 | |
f646968f | 260 | if (changed & NETIF_F_HW_VLAN_CTAG_RX) |
92491709 JP |
261 | atlx_vlan_mode(netdev, features); |
262 | ||
263 | return 0; | |
305282ba JC |
264 | } |
265 | ||
305282ba | 266 | #endif /* ATLX_C */ |