1/*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License.  See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
7 */
8
9#include <linux/init.h>
10#include <linux/kernel.h>
11#include <linux/platform_device.h>
12#include <linux/export.h>
13#include <bcm63xx_dev_enet.h>
14#include <bcm63xx_io.h>
15#include <bcm63xx_regs.h>
16
17static const unsigned long bcm6348_regs_enetdmac[] = {
18	[ENETDMAC_CHANCFG]	= ENETDMAC_CHANCFG_REG,
19	[ENETDMAC_IR]		= ENETDMAC_IR_REG,
20	[ENETDMAC_IRMASK]	= ENETDMAC_IRMASK_REG,
21	[ENETDMAC_MAXBURST]	= ENETDMAC_MAXBURST_REG,
22};
23
24static const unsigned long bcm6345_regs_enetdmac[] = {
25	[ENETDMAC_CHANCFG]	= ENETDMA_6345_CHANCFG_REG,
26	[ENETDMAC_IR]		= ENETDMA_6345_IR_REG,
27	[ENETDMAC_IRMASK]	= ENETDMA_6345_IRMASK_REG,
28	[ENETDMAC_MAXBURST]	= ENETDMA_6345_MAXBURST_REG,
29	[ENETDMAC_BUFALLOC]	= ENETDMA_6345_BUFALLOC_REG,
30	[ENETDMAC_RSTART]	= ENETDMA_6345_RSTART_REG,
31	[ENETDMAC_FC]		= ENETDMA_6345_FC_REG,
32	[ENETDMAC_LEN]		= ENETDMA_6345_LEN_REG,
33};
34
35const unsigned long *bcm63xx_regs_enetdmac;
36EXPORT_SYMBOL(bcm63xx_regs_enetdmac);
37
38static __init void bcm63xx_enetdmac_regs_init(void)
39{
40	if (BCMCPU_IS_6345())
41		bcm63xx_regs_enetdmac = bcm6345_regs_enetdmac;
42	else
43		bcm63xx_regs_enetdmac = bcm6348_regs_enetdmac;
44}
45
46static struct resource shared_res[] = {
47	{
48		.start		= -1, /* filled at runtime */
49		.end		= -1, /* filled at runtime */
50		.flags		= IORESOURCE_MEM,
51	},
52	{
53		.start		= -1, /* filled at runtime */
54		.end		= -1, /* filled at runtime */
55		.flags		= IORESOURCE_MEM,
56	},
57	{
58		.start		= -1, /* filled at runtime */
59		.end		= -1, /* filled at runtime */
60		.flags		= IORESOURCE_MEM,
61	},
62};
63
64static struct platform_device bcm63xx_enet_shared_device = {
65	.name		= "bcm63xx_enet_shared",
66	.id		= 0,
67	.num_resources	= ARRAY_SIZE(shared_res),
68	.resource	= shared_res,
69};
70
71static int shared_device_registered;
72
73static struct resource enet0_res[] = {
74	{
75		.start		= -1, /* filled at runtime */
76		.end		= -1, /* filled at runtime */
77		.flags		= IORESOURCE_MEM,
78	},
79	{
80		.start		= -1, /* filled at runtime */
81		.flags		= IORESOURCE_IRQ,
82	},
83	{
84		.start		= -1, /* filled at runtime */
85		.flags		= IORESOURCE_IRQ,
86	},
87	{
88		.start		= -1, /* filled at runtime */
89		.flags		= IORESOURCE_IRQ,
90	},
91};
92
93static struct bcm63xx_enet_platform_data enet0_pd;
94
95static struct platform_device bcm63xx_enet0_device = {
96	.name		= "bcm63xx_enet",
97	.id		= 0,
98	.num_resources	= ARRAY_SIZE(enet0_res),
99	.resource	= enet0_res,
100	.dev		= {
101		.platform_data = &enet0_pd,
102	},
103};
104
105static struct resource enet1_res[] = {
106	{
107		.start		= -1, /* filled at runtime */
108		.end		= -1, /* filled at runtime */
109		.flags		= IORESOURCE_MEM,
110	},
111	{
112		.start		= -1, /* filled at runtime */
113		.flags		= IORESOURCE_IRQ,
114	},
115	{
116		.start		= -1, /* filled at runtime */
117		.flags		= IORESOURCE_IRQ,
118	},
119	{
120		.start		= -1, /* filled at runtime */
121		.flags		= IORESOURCE_IRQ,
122	},
123};
124
125static struct bcm63xx_enet_platform_data enet1_pd;
126
127static struct platform_device bcm63xx_enet1_device = {
128	.name		= "bcm63xx_enet",
129	.id		= 1,
130	.num_resources	= ARRAY_SIZE(enet1_res),
131	.resource	= enet1_res,
132	.dev		= {
133		.platform_data = &enet1_pd,
134	},
135};
136
137static struct resource enetsw_res[] = {
138	{
139		/* start & end filled at runtime */
140		.flags		= IORESOURCE_MEM,
141	},
142	{
143		/* start filled at runtime */
144		.flags		= IORESOURCE_IRQ,
145	},
146	{
147		/* start filled at runtime */
148		.flags		= IORESOURCE_IRQ,
149	},
150};
151
152static struct bcm63xx_enetsw_platform_data enetsw_pd;
153
154static struct platform_device bcm63xx_enetsw_device = {
155	.name		= "bcm63xx_enetsw",
156	.num_resources	= ARRAY_SIZE(enetsw_res),
157	.resource	= enetsw_res,
158	.dev		= {
159		.platform_data = &enetsw_pd,
160	},
161};
162
163static int __init register_shared(void)
164{
165	int ret, chan_count;
166
167	if (shared_device_registered)
168		return 0;
169
170	bcm63xx_enetdmac_regs_init();
171
172	shared_res[0].start = bcm63xx_regset_address(RSET_ENETDMA);
173	shared_res[0].end = shared_res[0].start;
174	if (BCMCPU_IS_6345())
175		shared_res[0].end += (RSET_6345_ENETDMA_SIZE) - 1;
176	else
177		shared_res[0].end += (RSET_ENETDMA_SIZE)  - 1;
178
179	if (BCMCPU_IS_6328() || BCMCPU_IS_6362() || BCMCPU_IS_6368())
180		chan_count = 32;
181	else if (BCMCPU_IS_6345())
182		chan_count = 8;
183	else
184		chan_count = 16;
185
186	shared_res[1].start = bcm63xx_regset_address(RSET_ENETDMAC);
187	shared_res[1].end = shared_res[1].start;
188	shared_res[1].end += RSET_ENETDMAC_SIZE(chan_count)  - 1;
189
190	shared_res[2].start = bcm63xx_regset_address(RSET_ENETDMAS);
191	shared_res[2].end = shared_res[2].start;
192	shared_res[2].end += RSET_ENETDMAS_SIZE(chan_count)  - 1;
193
194	ret = platform_device_register(&bcm63xx_enet_shared_device);
195	if (ret)
196		return ret;
197	shared_device_registered = 1;
198
199	return 0;
200}
201
202int __init bcm63xx_enet_register(int unit,
203				 const struct bcm63xx_enet_platform_data *pd)
204{
205	struct platform_device *pdev;
206	struct bcm63xx_enet_platform_data *dpd;
207	int ret;
208
209	if (unit > 1)
210		return -ENODEV;
211
212	if (unit == 1 && (BCMCPU_IS_6338() || BCMCPU_IS_6345()))
213		return -ENODEV;
214
215	ret = register_shared();
216	if (ret)
217		return ret;
218
219	if (unit == 0) {
220		enet0_res[0].start = bcm63xx_regset_address(RSET_ENET0);
221		enet0_res[0].end = enet0_res[0].start;
222		enet0_res[0].end += RSET_ENET_SIZE - 1;
223		enet0_res[1].start = bcm63xx_get_irq_number(IRQ_ENET0);
224		enet0_res[2].start = bcm63xx_get_irq_number(IRQ_ENET0_RXDMA);
225		enet0_res[3].start = bcm63xx_get_irq_number(IRQ_ENET0_TXDMA);
226		pdev = &bcm63xx_enet0_device;
227	} else {
228		enet1_res[0].start = bcm63xx_regset_address(RSET_ENET1);
229		enet1_res[0].end = enet1_res[0].start;
230		enet1_res[0].end += RSET_ENET_SIZE - 1;
231		enet1_res[1].start = bcm63xx_get_irq_number(IRQ_ENET1);
232		enet1_res[2].start = bcm63xx_get_irq_number(IRQ_ENET1_RXDMA);
233		enet1_res[3].start = bcm63xx_get_irq_number(IRQ_ENET1_TXDMA);
234		pdev = &bcm63xx_enet1_device;
235	}
236
237	/* copy given platform data */
238	dpd = pdev->dev.platform_data;
239	memcpy(dpd, pd, sizeof(*pd));
240
241	/* adjust them in case internal phy is used */
242	if (dpd->use_internal_phy) {
243
244		/* internal phy only exists for enet0 */
245		if (unit == 1)
246			return -ENODEV;
247
248		dpd->phy_id = 1;
249		dpd->has_phy_interrupt = 1;
250		dpd->phy_interrupt = bcm63xx_get_irq_number(IRQ_ENET_PHY);
251	}
252
253	dpd->dma_chan_en_mask = ENETDMAC_CHANCFG_EN_MASK;
254	dpd->dma_chan_int_mask = ENETDMAC_IR_PKTDONE_MASK;
255	if (BCMCPU_IS_6345()) {
256		dpd->dma_chan_en_mask |= ENETDMAC_CHANCFG_CHAINING_MASK;
257		dpd->dma_chan_en_mask |= ENETDMAC_CHANCFG_WRAP_EN_MASK;
258		dpd->dma_chan_en_mask |= ENETDMAC_CHANCFG_FLOWC_EN_MASK;
259		dpd->dma_chan_int_mask |= ENETDMA_IR_BUFDONE_MASK;
260		dpd->dma_chan_int_mask |= ENETDMA_IR_NOTOWNER_MASK;
261		dpd->dma_chan_width = ENETDMA_6345_CHAN_WIDTH;
262		dpd->dma_desc_shift = ENETDMA_6345_DESC_SHIFT;
263	} else {
264		dpd->dma_has_sram = true;
265		dpd->dma_chan_width = ENETDMA_CHAN_WIDTH;
266	}
267
268	ret = platform_device_register(pdev);
269	if (ret)
270		return ret;
271	return 0;
272}
273
274int __init
275bcm63xx_enetsw_register(const struct bcm63xx_enetsw_platform_data *pd)
276{
277	int ret;
278
279	if (!BCMCPU_IS_6328() && !BCMCPU_IS_6362() && !BCMCPU_IS_6368())
280		return -ENODEV;
281
282	ret = register_shared();
283	if (ret)
284		return ret;
285
286	enetsw_res[0].start = bcm63xx_regset_address(RSET_ENETSW);
287	enetsw_res[0].end = enetsw_res[0].start;
288	enetsw_res[0].end += RSET_ENETSW_SIZE - 1;
289	enetsw_res[1].start = bcm63xx_get_irq_number(IRQ_ENETSW_RXDMA0);
290	enetsw_res[2].start = bcm63xx_get_irq_number(IRQ_ENETSW_TXDMA0);
291	if (!enetsw_res[2].start)
292		enetsw_res[2].start = -1;
293
294	memcpy(bcm63xx_enetsw_device.dev.platform_data, pd, sizeof(*pd));
295
296	if (BCMCPU_IS_6328())
297		enetsw_pd.num_ports = ENETSW_PORTS_6328;
298	else if (BCMCPU_IS_6362() || BCMCPU_IS_6368())
299		enetsw_pd.num_ports = ENETSW_PORTS_6368;
300
301	enetsw_pd.dma_has_sram = true;
302	enetsw_pd.dma_chan_width = ENETDMA_CHAN_WIDTH;
303	enetsw_pd.dma_chan_en_mask = ENETDMAC_CHANCFG_EN_MASK;
304	enetsw_pd.dma_chan_int_mask = ENETDMAC_IR_PKTDONE_MASK;
305
306	ret = platform_device_register(&bcm63xx_enetsw_device);
307	if (ret)
308		return ret;
309
310	return 0;
311}
312