Root/target/linux/brcm47xx/patches-3.0/700-ssb-gigabit-ethernet-driver.patch

1--- a/drivers/net/tg3.c
2+++ b/drivers/net/tg3.c
3@@ -43,6 +43,7 @@
4 #include <linux/prefetch.h>
5 #include <linux/dma-mapping.h>
6 #include <linux/firmware.h>
7+#include <linux/ssb/ssb_driver_gige.h>
8 
9 #include <net/checksum.h>
10 #include <net/ip.h>
11@@ -515,7 +516,8 @@ static void _tw32_flush(struct tg3 *tp,
12 static inline void tw32_mailbox_flush(struct tg3 *tp, u32 off, u32 val)
13 {
14     tp->write32_mbox(tp, off, val);
15- if (!tg3_flag(tp, MBOX_WRITE_REORDER) && !tg3_flag(tp, ICH_WORKAROUND))
16+ if (tg3_flag(tp, FLUSH_POSTED_WRITES) ||
17+ (!tg3_flag(tp, MBOX_WRITE_REORDER) && !tg3_flag(tp, ICH_WORKAROUND)))
18         tp->read32_mbox(tp, off);
19 }
20 
21@@ -525,7 +527,7 @@ static void tg3_write32_tx_mbox(struct t
22     writel(val, mbox);
23     if (tg3_flag(tp, TXD_MBOX_HWBUG))
24         writel(val, mbox);
25- if (tg3_flag(tp, MBOX_WRITE_REORDER))
26+ if (tg3_flag(tp, MBOX_WRITE_REORDER) || tg3_flag(tp, FLUSH_POSTED_WRITES))
27         readl(mbox);
28 }
29 
30@@ -804,7 +806,7 @@ static void tg3_switch_clocks(struct tg3
31 
32 #define PHY_BUSY_LOOPS 5000
33 
34-static int tg3_readphy(struct tg3 *tp, int reg, u32 *val)
35+static int __tg3_readphy(struct tg3 *tp, unsigned int phy_addr, int reg, u32 *val)
36 {
37     u32 frame_val;
38     unsigned int loops;
39@@ -818,7 +820,7 @@ static int tg3_readphy(struct tg3 *tp, i
40 
41     *val = 0x0;
42 
43- frame_val = ((tp->phy_addr << MI_COM_PHY_ADDR_SHIFT) &
44+ frame_val = ((phy_addr << MI_COM_PHY_ADDR_SHIFT) &
45               MI_COM_PHY_ADDR_MASK);
46     frame_val |= ((reg << MI_COM_REG_ADDR_SHIFT) &
47               MI_COM_REG_ADDR_MASK);
48@@ -853,7 +855,12 @@ static int tg3_readphy(struct tg3 *tp, i
49     return ret;
50 }
51 
52-static int tg3_writephy(struct tg3 *tp, int reg, u32 val)
53+static int tg3_readphy(struct tg3 *tp, int reg, u32 *val)
54+{
55+ return __tg3_readphy(tp, tp->phy_addr, reg, val);
56+}
57+
58+static int __tg3_writephy(struct tg3 *tp, unsigned int phy_addr, int reg, u32 val)
59 {
60     u32 frame_val;
61     unsigned int loops;
62@@ -869,7 +876,7 @@ static int tg3_writephy(struct tg3 *tp,
63         udelay(80);
64     }
65 
66- frame_val = ((tp->phy_addr << MI_COM_PHY_ADDR_SHIFT) &
67+ frame_val = ((phy_addr << MI_COM_PHY_ADDR_SHIFT) &
68               MI_COM_PHY_ADDR_MASK);
69     frame_val |= ((reg << MI_COM_REG_ADDR_SHIFT) &
70               MI_COM_REG_ADDR_MASK);
71@@ -902,6 +909,11 @@ static int tg3_writephy(struct tg3 *tp,
72     return ret;
73 }
74 
75+static int tg3_writephy(struct tg3 *tp, int reg, u32 val)
76+{
77+ return __tg3_writephy(tp, tp->phy_addr, reg, val);
78+}
79+
80 static int tg3_phy_cl45_write(struct tg3 *tp, u32 devad, u32 addr, u32 val)
81 {
82     int err;
83@@ -2532,6 +2544,9 @@ static int tg3_nvram_read(struct tg3 *tp
84 {
85     int ret;
86 
87+ if (tg3_flag(tp, IS_SSB_CORE))
88+ return -ENODEV;
89+
90     if (!tg3_flag(tp, NVRAM))
91         return tg3_nvram_read_using_eeprom(tp, offset, val);
92 
93@@ -2855,8 +2870,10 @@ static int tg3_power_down_prepare(struct
94     tg3_frob_aux_power(tp);
95 
96     /* Workaround for unstable PLL clock */
97- if ((GET_CHIP_REV(tp->pci_chip_rev_id) == CHIPREV_5750_AX) ||
98- (GET_CHIP_REV(tp->pci_chip_rev_id) == CHIPREV_5750_BX)) {
99+ if ((tp->phy_id & TG3_PHY_ID_MASK) != TG3_PHY_ID_BCM5750_2 &&
100+ /* !!! FIXME !!! */
101+ ((GET_CHIP_REV(tp->pci_chip_rev_id) == CHIPREV_5750_AX) ||
102+ (GET_CHIP_REV(tp->pci_chip_rev_id) == CHIPREV_5750_BX))) {
103         u32 val = tr32(0x7d00);
104 
105         val &= ~((1 << 16) | (1 << 4) | (1 << 2) | (1 << 1) | 1);
106@@ -3377,6 +3394,14 @@ relink:
107     if (current_link_up == 0 || (tp->phy_flags & TG3_PHYFLG_IS_LOW_POWER)) {
108         tg3_phy_copper_begin(tp);
109 
110+ if (tg3_flag(tp, ROBOSWITCH)) {
111+ current_link_up = 1;
112+ current_speed = SPEED_1000; /* FIXME */
113+ current_duplex = DUPLEX_FULL;
114+ tp->link_config.active_speed = current_speed;
115+ tp->link_config.active_duplex = current_duplex;
116+ }
117+
118         tg3_readphy(tp, MII_BMSR, &bmsr);
119         if ((!tg3_readphy(tp, MII_BMSR, &bmsr) && (bmsr & BMSR_LSTATUS)) ||
120             (tp->mac_mode & MAC_MODE_PORT_INT_LPBACK))
121@@ -6962,6 +6987,11 @@ static int tg3_poll_fw(struct tg3 *tp)
122     int i;
123     u32 val;
124 
125+ if (tg3_flag(tp, IS_SSB_CORE)) {
126+ /* We don't use firmware. */
127+ return 0;
128+ }
129+
130     if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5906) {
131         /* Wait up to 20ms for init done. */
132         for (i = 0; i < 200; i++) {
133@@ -7251,6 +7281,14 @@ static int tg3_chip_reset(struct tg3 *tp
134         tw32(0x5000, 0x400);
135     }
136 
137+ if (tg3_flag(tp, IS_SSB_CORE)) {
138+ /* BCM4785: In order to avoid repercussions from using potentially
139+ * defective internal ROM, stop the Rx RISC CPU, which is not
140+ * required. */
141+ tg3_stop_fw(tp);
142+ tg3_halt_cpu(tp, RX_CPU_BASE);
143+ }
144+
145     tw32(GRC_MODE, tp->grc_mode);
146 
147     if (tp->pci_chip_rev_id == CHIPREV_ID_5705_A0) {
148@@ -7403,9 +7441,12 @@ static int tg3_halt_cpu(struct tg3 *tp,
149         return -ENODEV;
150     }
151 
152- /* Clear firmware's nvram arbitration. */
153- if (tg3_flag(tp, NVRAM))
154- tw32(NVRAM_SWARB, SWARB_REQ_CLR0);
155+ if (!tg3_flag(tp, IS_SSB_CORE)) {
156+ /* Clear firmware's nvram arbitration. */
157+ if (tg3_flag(tp, NVRAM))
158+ tw32(NVRAM_SWARB, SWARB_REQ_CLR0);
159+ }
160+
161     return 0;
162 }
163 
164@@ -7467,6 +7508,11 @@ static int tg3_load_5701_a0_firmware_fix
165     const __be32 *fw_data;
166     int err, i;
167 
168+ if (tg3_flag(tp, IS_SSB_CORE)) {
169+ /* We don't use firmware. */
170+ return 0;
171+ }
172+
173     fw_data = (void *)tp->fw->data;
174 
175     /* Firmware blob starts with version numbers, followed by
176@@ -7523,6 +7569,11 @@ static int tg3_load_tso_firmware(struct
177     unsigned long cpu_base, cpu_scratch_base, cpu_scratch_size;
178     int err, i;
179 
180+ if (tg3_flag(tp, IS_SSB_CORE)) {
181+ /* We don't use firmware. */
182+ return 0;
183+ }
184+
185     if (tg3_flag(tp, HW_TSO_1) ||
186         tg3_flag(tp, HW_TSO_2) ||
187         tg3_flag(tp, HW_TSO_3))
188@@ -8819,6 +8870,11 @@ static void tg3_timer(unsigned long __op
189 
190     spin_lock(&tp->lock);
191 
192+ if (tg3_flag(tp, FLUSH_POSTED_WRITES)) {
193+ /* BCM4785: Flush posted writes from GbE to host memory. */
194+ tr32(HOSTCC_MODE);
195+ }
196+
197     if (!tg3_flag(tp, TAGGED_STATUS)) {
198         /* All of this garbage is because when using non-tagged
199          * IRQ status the mailbox/status_block protocol the chip
200@@ -10446,6 +10502,11 @@ static int tg3_test_nvram(struct tg3 *tp
201     if (tg3_flag(tp, NO_NVRAM))
202         return 0;
203 
204+ if (tg3_flag(tp, IS_SSB_CORE)) {
205+ /* We don't have NVRAM. */
206+ return 0;
207+ }
208+
209     if (tg3_nvram_read(tp, 0, &magic) != 0)
210         return -EIO;
211 
212@@ -11440,7 +11501,7 @@ static int tg3_ioctl(struct net_device *
213             return -EAGAIN;
214 
215         spin_lock_bh(&tp->lock);
216- err = tg3_readphy(tp, data->reg_num & 0x1f, &mii_regval);
217+ err = __tg3_readphy(tp, data->phy_id & 0x1f, data->reg_num & 0x1f, &mii_regval);
218         spin_unlock_bh(&tp->lock);
219 
220         data->val_out = mii_regval;
221@@ -11456,7 +11517,7 @@ static int tg3_ioctl(struct net_device *
222             return -EAGAIN;
223 
224         spin_lock_bh(&tp->lock);
225- err = tg3_writephy(tp, data->reg_num & 0x1f, data->val_in);
226+ err = __tg3_writephy(tp, data->phy_id & 0x1f, data->reg_num & 0x1f, data->val_in);
227         spin_unlock_bh(&tp->lock);
228 
229         return err;
230@@ -12186,6 +12247,13 @@ static void __devinit tg3_get_5720_nvram
231 /* Chips other than 5700/5701 use the NVRAM for fetching info. */
232 static void __devinit tg3_nvram_init(struct tg3 *tp)
233 {
234+ if (tg3_flag(tp, IS_SSB_CORE)) {
235+ /* No NVRAM and EEPROM on the SSB Broadcom GigE core. */
236+ tg3_flag_clear(tp, NVRAM);
237+ tg3_flag_clear(tp, NVRAM_BUFFERED);
238+ return;
239+ }
240+
241     tw32_f(GRC_EEPROM_ADDR,
242          (EEPROM_ADDR_FSM_RESET |
243           (EEPROM_DEFAULT_CLOCK_PERIOD <<
244@@ -12452,6 +12520,9 @@ static int tg3_nvram_write_block(struct
245 {
246     int ret;
247 
248+ if (tg3_flag(tp, IS_SSB_CORE))
249+ return -ENODEV;
250+
251     if (tg3_flag(tp, EEPROM_WRITE_PROT)) {
252         tw32_f(GRC_LOCAL_CTRL, tp->grc_local_ctrl &
253                ~GRC_LCLCTRL_GPIO_OUTPUT1);
254@@ -13863,6 +13934,11 @@ static int __devinit tg3_get_invariants(
255           GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5701)))
256         tg3_flag_set(tp, SRAM_USE_CONFIG);
257 
258+ if (tg3_flag(tp, FLUSH_POSTED_WRITES)) {
259+ tp->write32_tx_mbox = tg3_write_flush_reg32;
260+ tp->write32_rx_mbox = tg3_write_flush_reg32;
261+ }
262+
263     /* Get eeprom hw config before calling tg3_set_power_state().
264      * In particular, the TG3_FLAG_IS_NIC flag must be
265      * determined before calling tg3_set_power_state() so that
266@@ -14274,6 +14350,8 @@ static int __devinit tg3_get_device_addr
267     }
268 
269     if (!is_valid_ether_addr(&dev->dev_addr[0])) {
270+ if (tg3_flag(tp, IS_SSB_CORE))
271+ ssb_gige_get_macaddr(tp->pdev, &dev->dev_addr[0]);
272 #ifdef CONFIG_SPARC
273         if (!tg3_get_default_macaddr_sparc(tp))
274             return 0;
275@@ -14772,6 +14850,7 @@ static char * __devinit tg3_phy_string(s
276     case TG3_PHY_ID_BCM5704: return "5704";
277     case TG3_PHY_ID_BCM5705: return "5705";
278     case TG3_PHY_ID_BCM5750: return "5750";
279+ case TG3_PHY_ID_BCM5750_2: return "5750-2";
280     case TG3_PHY_ID_BCM5752: return "5752";
281     case TG3_PHY_ID_BCM5714: return "5714";
282     case TG3_PHY_ID_BCM5780: return "5780";
283@@ -14961,6 +15040,13 @@ static int __devinit tg3_init_one(struct
284         tp->msg_enable = tg3_debug;
285     else
286         tp->msg_enable = TG3_DEF_MSG_ENABLE;
287+ if (pdev_is_ssb_gige_core(pdev)) {
288+ tg3_flag_set(tp, IS_SSB_CORE);
289+ if (ssb_gige_must_flush_posted_writes(pdev))
290+ tg3_flag_set(tp, FLUSH_POSTED_WRITES);
291+ if (ssb_gige_have_roboswitch(pdev))
292+ tg3_flag_set(tp, ROBOSWITCH);
293+ }
294 
295     /* The word/byte swap controls here control register access byte
296      * swapping. DMA data byte swapping is controlled in the GRC_MODE
297--- a/drivers/net/tg3.h
298+++ b/drivers/net/tg3.h
299@@ -2901,6 +2901,9 @@ enum TG3_FLAGS {
300     TG3_FLAG_57765_PLUS,
301     TG3_FLAG_APE_HAS_NCSI,
302     TG3_FLAG_5717_PLUS,
303+ TG3_FLAG_IS_SSB_CORE,
304+ TG3_FLAG_FLUSH_POSTED_WRITES,
305+ TG3_FLAG_ROBOSWITCH,
306 
307     /* Add new flags before this comment and TG3_FLAG_NUMBER_OF_FLAGS */
308     TG3_FLAG_NUMBER_OF_FLAGS, /* Last entry in enum TG3_FLAGS */
309@@ -3051,6 +3054,7 @@ struct tg3 {
310 #define TG3_PHY_ID_BCM5704 0x60008190
311 #define TG3_PHY_ID_BCM5705 0x600081a0
312 #define TG3_PHY_ID_BCM5750 0x60008180
313+#define TG3_PHY_ID_BCM5750_2 0xbc050cd0
314 #define TG3_PHY_ID_BCM5752 0x60008100
315 #define TG3_PHY_ID_BCM5714 0x60008340
316 #define TG3_PHY_ID_BCM5780 0x60008350
317@@ -3088,7 +3092,7 @@ struct tg3 {
318      (X) == TG3_PHY_ID_BCM5906 || (X) == TG3_PHY_ID_BCM5761 || \
319      (X) == TG3_PHY_ID_BCM5718C || (X) == TG3_PHY_ID_BCM5718S || \
320      (X) == TG3_PHY_ID_BCM57765 || (X) == TG3_PHY_ID_BCM5719C || \
321- (X) == TG3_PHY_ID_BCM8002)
322+ (X) == TG3_PHY_ID_BCM8002 || (X) == TG3_PHY_ID_BCM5750_2)
323 
324     u32 phy_flags;
325 #define TG3_PHYFLG_IS_LOW_POWER 0x00000001
326

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