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9eac3591 GR |
1 | /* |
2 | * Copyright (c) 2003-2013 Broadcom Corporation | |
3 | * All Rights Reserved | |
4 | * | |
5 | * This software is available to you under a choice of one of two | |
6 | * licenses. You may choose to be licensed under the terms of the GNU | |
7 | * General Public License (GPL) Version 2, available from the file | |
8 | * COPYING in the main directory of this source tree, or the Broadcom | |
9 | * license below: | |
10 | * | |
11 | * Redistribution and use in source and binary forms, with or without | |
12 | * modification, are permitted provided that the following conditions | |
13 | * are met: | |
14 | * | |
15 | * 1. Redistributions of source code must retain the above copyright | |
16 | * notice, this list of conditions and the following disclaimer. | |
17 | * 2. Redistributions in binary form must reproduce the above copyright | |
18 | * notice, this list of conditions and the following disclaimer in | |
19 | * the documentation and/or other materials provided with the | |
20 | * distribution. | |
21 | * | |
22 | * THIS SOFTWARE IS PROVIDED BY BROADCOM ``AS IS'' AND ANY EXPRESS OR | |
23 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | |
24 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
25 | * ARE DISCLAIMED. IN NO EVENT SHALL BROADCOM OR CONTRIBUTORS BE LIABLE | |
26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
27 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
28 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
29 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, | |
30 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE | |
31 | * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN | |
32 | * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
33 | */ | |
34 | ||
35 | #include <linux/dma-mapping.h> | |
36 | #include <linux/kernel.h> | |
37 | #include <linux/delay.h> | |
38 | #include <linux/init.h> | |
39 | #include <linux/pci.h> | |
3262b21e | 40 | #include <linux/pci_ids.h> |
9eac3591 GR |
41 | #include <linux/platform_device.h> |
42 | #include <linux/irq.h> | |
43 | ||
44 | #include <asm/netlogic/common.h> | |
45 | #include <asm/netlogic/haldefs.h> | |
46 | #include <asm/netlogic/xlp-hal/iomap.h> | |
47 | #include <asm/netlogic/xlp-hal/xlp.h> | |
48 | ||
49 | #define XLPII_USB3_CTL_0 0xc0 | |
50 | #define XLPII_VAUXRST BIT(0) | |
51 | #define XLPII_VCCRST BIT(1) | |
52 | #define XLPII_NUM2PORT 9 | |
53 | #define XLPII_NUM3PORT 13 | |
54 | #define XLPII_RTUNEREQ BIT(20) | |
55 | #define XLPII_MS_CSYSREQ BIT(21) | |
56 | #define XLPII_XS_CSYSREQ BIT(22) | |
57 | #define XLPII_RETENABLEN BIT(23) | |
58 | #define XLPII_TX2RX BIT(24) | |
59 | #define XLPII_XHCIREV BIT(25) | |
60 | #define XLPII_ECCDIS BIT(26) | |
61 | ||
62 | #define XLPII_USB3_INT_REG 0xc2 | |
63 | #define XLPII_USB3_INT_MASK 0xc3 | |
64 | ||
65 | #define XLPII_USB_PHY_TEST 0xc6 | |
66 | #define XLPII_PRESET BIT(0) | |
67 | #define XLPII_ATERESET BIT(1) | |
68 | #define XLPII_LOOPEN BIT(2) | |
69 | #define XLPII_TESTPDHSP BIT(3) | |
70 | #define XLPII_TESTPDSSP BIT(4) | |
71 | #define XLPII_TESTBURNIN BIT(5) | |
72 | ||
73 | #define XLPII_USB_PHY_LOS_LV 0xc9 | |
74 | #define XLPII_LOSLEV 0 | |
75 | #define XLPII_LOSBIAS 5 | |
76 | #define XLPII_SQRXTX 8 | |
77 | #define XLPII_TXBOOST 11 | |
78 | #define XLPII_RSLKSEL 16 | |
79 | #define XLPII_FSEL 20 | |
80 | ||
81 | #define XLPII_USB_RFCLK_REG 0xcc | |
82 | #define XLPII_VVLD 30 | |
83 | ||
84 | #define nlm_read_usb_reg(b, r) nlm_read_reg(b, r) | |
85 | #define nlm_write_usb_reg(b, r, v) nlm_write_reg(b, r, v) | |
86 | ||
3262b21e GR |
87 | #define nlm_xlpii_get_usb_pcibase(node, inst) \ |
88 | nlm_pcicfg_base(cpu_is_xlp9xx() ? \ | |
89 | XLP9XX_IO_USB_OFFSET(node, inst) : \ | |
90 | XLP2XX_IO_USB_OFFSET(node, inst)) | |
9eac3591 GR |
91 | #define nlm_xlpii_get_usb_regbase(node, inst) \ |
92 | (nlm_xlpii_get_usb_pcibase(node, inst) + XLP_IO_PCI_HDRSZ) | |
93 | ||
3262b21e | 94 | static void xlp2xx_usb_ack(struct irq_data *data) |
9eac3591 GR |
95 | { |
96 | u64 port_addr; | |
97 | ||
98 | switch (data->irq) { | |
99 | case PIC_2XX_XHCI_0_IRQ: | |
100 | port_addr = nlm_xlpii_get_usb_regbase(0, 1); | |
101 | break; | |
102 | case PIC_2XX_XHCI_1_IRQ: | |
103 | port_addr = nlm_xlpii_get_usb_regbase(0, 2); | |
104 | break; | |
105 | case PIC_2XX_XHCI_2_IRQ: | |
106 | port_addr = nlm_xlpii_get_usb_regbase(0, 3); | |
107 | break; | |
108 | default: | |
109 | pr_err("No matching USB irq!\n"); | |
110 | return; | |
111 | } | |
112 | nlm_write_usb_reg(port_addr, XLPII_USB3_INT_REG, 0xffffffff); | |
113 | } | |
114 | ||
3262b21e GR |
115 | static void xlp9xx_usb_ack(struct irq_data *data) |
116 | { | |
117 | u64 port_addr; | |
118 | int node, irq; | |
119 | ||
120 | /* Find the node and irq on the node */ | |
121 | irq = data->irq % NLM_IRQS_PER_NODE; | |
122 | node = data->irq / NLM_IRQS_PER_NODE; | |
123 | ||
124 | switch (irq) { | |
125 | case PIC_9XX_XHCI_0_IRQ: | |
126 | port_addr = nlm_xlpii_get_usb_regbase(node, 1); | |
127 | break; | |
128 | case PIC_9XX_XHCI_1_IRQ: | |
129 | port_addr = nlm_xlpii_get_usb_regbase(node, 2); | |
130 | break; | |
131 | default: | |
132 | pr_err("No matching USB irq %d node %d!\n", irq, node); | |
133 | return; | |
134 | } | |
135 | nlm_write_usb_reg(port_addr, XLPII_USB3_INT_REG, 0xffffffff); | |
136 | } | |
137 | ||
9eac3591 GR |
138 | static void nlm_xlpii_usb_hw_reset(int node, int port) |
139 | { | |
140 | u64 port_addr, xhci_base, pci_base; | |
141 | void __iomem *corebase; | |
142 | u32 val; | |
143 | ||
144 | port_addr = nlm_xlpii_get_usb_regbase(node, port); | |
145 | ||
146 | /* Set frequency */ | |
147 | val = nlm_read_usb_reg(port_addr, XLPII_USB_PHY_LOS_LV); | |
148 | val &= ~(0x3f << XLPII_FSEL); | |
149 | val |= (0x27 << XLPII_FSEL); | |
150 | nlm_write_usb_reg(port_addr, XLPII_USB_PHY_LOS_LV, val); | |
151 | ||
152 | val = nlm_read_usb_reg(port_addr, XLPII_USB_RFCLK_REG); | |
153 | val |= (1 << XLPII_VVLD); | |
154 | nlm_write_usb_reg(port_addr, XLPII_USB_RFCLK_REG, val); | |
155 | ||
156 | /* PHY reset */ | |
157 | val = nlm_read_usb_reg(port_addr, XLPII_USB_PHY_TEST); | |
158 | val &= (XLPII_ATERESET | XLPII_LOOPEN | XLPII_TESTPDHSP | |
159 | | XLPII_TESTPDSSP | XLPII_TESTBURNIN); | |
160 | nlm_write_usb_reg(port_addr, XLPII_USB_PHY_TEST, val); | |
161 | ||
162 | /* Setup control register */ | |
163 | val = XLPII_VAUXRST | XLPII_VCCRST | (1 << XLPII_NUM2PORT) | |
164 | | (1 << XLPII_NUM3PORT) | XLPII_MS_CSYSREQ | XLPII_XS_CSYSREQ | |
165 | | XLPII_RETENABLEN | XLPII_XHCIREV; | |
166 | nlm_write_usb_reg(port_addr, XLPII_USB3_CTL_0, val); | |
167 | ||
168 | /* Enable interrupts */ | |
169 | nlm_write_usb_reg(port_addr, XLPII_USB3_INT_MASK, 0x00000001); | |
170 | ||
171 | /* Clear all interrupts */ | |
172 | nlm_write_usb_reg(port_addr, XLPII_USB3_INT_REG, 0xffffffff); | |
173 | ||
174 | udelay(2000); | |
175 | ||
176 | /* XHCI configuration at PCI mem */ | |
177 | pci_base = nlm_xlpii_get_usb_pcibase(node, port); | |
178 | xhci_base = nlm_read_usb_reg(pci_base, 0x4) & ~0xf; | |
179 | corebase = ioremap(xhci_base, 0x10000); | |
180 | if (!corebase) | |
181 | return; | |
182 | ||
183 | writel(0x240002, corebase + 0xc2c0); | |
184 | /* GCTL 0xc110 */ | |
185 | val = readl(corebase + 0xc110); | |
186 | val &= ~(0x3 << 12); | |
187 | val |= (1 << 12); | |
188 | writel(val, corebase + 0xc110); | |
189 | udelay(100); | |
190 | ||
191 | /* PHYCFG 0xc200 */ | |
192 | val = readl(corebase + 0xc200); | |
193 | val &= ~(1 << 6); | |
194 | writel(val, corebase + 0xc200); | |
195 | udelay(100); | |
196 | ||
197 | /* PIPECTL 0xc2c0 */ | |
198 | val = readl(corebase + 0xc2c0); | |
199 | val &= ~(1 << 17); | |
200 | writel(val, corebase + 0xc2c0); | |
201 | ||
202 | iounmap(corebase); | |
203 | } | |
204 | ||
205 | static int __init nlm_platform_xlpii_usb_init(void) | |
206 | { | |
3262b21e GR |
207 | int node; |
208 | ||
9eac3591 GR |
209 | if (!cpu_is_xlpii()) |
210 | return 0; | |
211 | ||
3262b21e GR |
212 | if (!cpu_is_xlp9xx()) { |
213 | /* XLP 2XX single node */ | |
214 | pr_info("Initializing 2XX USB Interface\n"); | |
215 | nlm_xlpii_usb_hw_reset(0, 1); | |
216 | nlm_xlpii_usb_hw_reset(0, 2); | |
217 | nlm_xlpii_usb_hw_reset(0, 3); | |
218 | nlm_set_pic_extra_ack(0, PIC_2XX_XHCI_0_IRQ, xlp2xx_usb_ack); | |
219 | nlm_set_pic_extra_ack(0, PIC_2XX_XHCI_1_IRQ, xlp2xx_usb_ack); | |
220 | nlm_set_pic_extra_ack(0, PIC_2XX_XHCI_2_IRQ, xlp2xx_usb_ack); | |
221 | return 0; | |
222 | } | |
9eac3591 | 223 | |
3262b21e GR |
224 | /* XLP 9XX, multi-node */ |
225 | pr_info("Initializing 9XX USB Interface\n"); | |
226 | for (node = 0; node < NLM_NR_NODES; node++) { | |
227 | if (!nlm_node_present(node)) | |
228 | continue; | |
229 | nlm_xlpii_usb_hw_reset(node, 1); | |
230 | nlm_xlpii_usb_hw_reset(node, 2); | |
231 | nlm_set_pic_extra_ack(node, PIC_9XX_XHCI_0_IRQ, xlp9xx_usb_ack); | |
232 | nlm_set_pic_extra_ack(node, PIC_9XX_XHCI_1_IRQ, xlp9xx_usb_ack); | |
233 | } | |
9eac3591 GR |
234 | return 0; |
235 | } | |
236 | ||
237 | arch_initcall(nlm_platform_xlpii_usb_init); | |
238 | ||
239 | static u64 xlp_usb_dmamask = ~(u32)0; | |
240 | ||
3262b21e GR |
241 | /* Fixup the IRQ for USB devices which is exist on XLP9XX SOC PCIE bus */ |
242 | static void nlm_xlp9xx_usb_fixup_final(struct pci_dev *dev) | |
243 | { | |
244 | int node; | |
245 | ||
246 | node = xlp_socdev_to_node(dev); | |
247 | dev->dev.dma_mask = &xlp_usb_dmamask; | |
248 | dev->dev.coherent_dma_mask = DMA_BIT_MASK(32); | |
249 | switch (dev->devfn) { | |
250 | case 0x21: | |
251 | dev->irq = nlm_irq_to_xirq(node, PIC_9XX_XHCI_0_IRQ); | |
252 | break; | |
253 | case 0x22: | |
254 | dev->irq = nlm_irq_to_xirq(node, PIC_9XX_XHCI_1_IRQ); | |
255 | break; | |
256 | } | |
257 | } | |
258 | ||
259 | /* Fixup the IRQ for USB devices which is exist on XLP2XX SOC PCIE bus */ | |
260 | static void nlm_xlp2xx_usb_fixup_final(struct pci_dev *dev) | |
9eac3591 GR |
261 | { |
262 | dev->dev.dma_mask = &xlp_usb_dmamask; | |
263 | dev->dev.coherent_dma_mask = DMA_BIT_MASK(32); | |
264 | switch (dev->devfn) { | |
265 | case 0x21: | |
266 | dev->irq = PIC_2XX_XHCI_0_IRQ; | |
267 | break; | |
268 | case 0x22: | |
269 | dev->irq = PIC_2XX_XHCI_1_IRQ; | |
270 | break; | |
271 | case 0x23: | |
272 | dev->irq = PIC_2XX_XHCI_2_IRQ; | |
273 | break; | |
274 | } | |
275 | } | |
276 | ||
3262b21e GR |
277 | DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_XLP9XX_XHCI, |
278 | nlm_xlp9xx_usb_fixup_final); | |
9eac3591 | 279 | DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_NETLOGIC, PCI_DEVICE_ID_NLM_XHCI, |
3262b21e | 280 | nlm_xlp2xx_usb_fixup_final); |