2 * Sonics Silicon Backplane SoC host related functions.
5 * Copyright 2005, Broadcom Corporation
6 * Copyright 2006, 2007, Michael Buesch <m@bues.ch>
8 * Licensed under the GNU/GPL. See COPYING for details.
11 #include <linux/bcm47xx_nvram.h>
12 #include <linux/ssb/ssb.h>
14 #include "ssb_private.h"
16 static u8 ssb_host_soc_read8(struct ssb_device *dev, u16 offset)
18 struct ssb_bus *bus = dev->bus;
20 offset += dev->core_index * SSB_CORE_SIZE;
21 return readb(bus->mmio + offset);
24 static u16 ssb_host_soc_read16(struct ssb_device *dev, u16 offset)
26 struct ssb_bus *bus = dev->bus;
28 offset += dev->core_index * SSB_CORE_SIZE;
29 return readw(bus->mmio + offset);
32 static u32 ssb_host_soc_read32(struct ssb_device *dev, u16 offset)
34 struct ssb_bus *bus = dev->bus;
36 offset += dev->core_index * SSB_CORE_SIZE;
37 return readl(bus->mmio + offset);
40 #ifdef CONFIG_SSB_BLOCKIO
41 static void ssb_host_soc_block_read(struct ssb_device *dev, void *buffer,
42 size_t count, u16 offset, u8 reg_width)
44 struct ssb_bus *bus = dev->bus;
47 offset += dev->core_index * SSB_CORE_SIZE;
48 addr = bus->mmio + offset;
55 *buf = __raw_readb(addr);
64 SSB_WARN_ON(count & 1);
66 *buf = (__force __le16)__raw_readw(addr);
75 SSB_WARN_ON(count & 3);
77 *buf = (__force __le32)__raw_readl(addr);
87 #endif /* CONFIG_SSB_BLOCKIO */
89 static void ssb_host_soc_write8(struct ssb_device *dev, u16 offset, u8 value)
91 struct ssb_bus *bus = dev->bus;
93 offset += dev->core_index * SSB_CORE_SIZE;
94 writeb(value, bus->mmio + offset);
97 static void ssb_host_soc_write16(struct ssb_device *dev, u16 offset, u16 value)
99 struct ssb_bus *bus = dev->bus;
101 offset += dev->core_index * SSB_CORE_SIZE;
102 writew(value, bus->mmio + offset);
105 static void ssb_host_soc_write32(struct ssb_device *dev, u16 offset, u32 value)
107 struct ssb_bus *bus = dev->bus;
109 offset += dev->core_index * SSB_CORE_SIZE;
110 writel(value, bus->mmio + offset);
113 #ifdef CONFIG_SSB_BLOCKIO
114 static void ssb_host_soc_block_write(struct ssb_device *dev, const void *buffer,
115 size_t count, u16 offset, u8 reg_width)
117 struct ssb_bus *bus = dev->bus;
120 offset += dev->core_index * SSB_CORE_SIZE;
121 addr = bus->mmio + offset;
125 const u8 *buf = buffer;
128 __raw_writeb(*buf, addr);
135 const __le16 *buf = buffer;
137 SSB_WARN_ON(count & 1);
139 __raw_writew((__force u16)(*buf), addr);
146 const __le32 *buf = buffer;
148 SSB_WARN_ON(count & 3);
150 __raw_writel((__force u32)(*buf), addr);
160 #endif /* CONFIG_SSB_BLOCKIO */
162 /* Ops for the plain SSB bus without a host-device (no PCI or PCMCIA). */
163 const struct ssb_bus_ops ssb_host_soc_ops = {
164 .read8 = ssb_host_soc_read8,
165 .read16 = ssb_host_soc_read16,
166 .read32 = ssb_host_soc_read32,
167 .write8 = ssb_host_soc_write8,
168 .write16 = ssb_host_soc_write16,
169 .write32 = ssb_host_soc_write32,
170 #ifdef CONFIG_SSB_BLOCKIO
171 .block_read = ssb_host_soc_block_read,
172 .block_write = ssb_host_soc_block_write,
176 int ssb_host_soc_get_invariants(struct ssb_bus *bus,
177 struct ssb_init_invariants *iv)
182 /* Fill boardinfo structure */
183 memset(&iv->boardinfo, 0, sizeof(struct ssb_boardinfo));
185 len = bcm47xx_nvram_getenv("boardvendor", buf, sizeof(buf));
187 err = kstrtou16(strim(buf), 0, &iv->boardinfo.vendor);
189 pr_warn("Couldn't parse nvram board vendor entry with value \"%s\"\n",
192 if (!iv->boardinfo.vendor)
193 iv->boardinfo.vendor = SSB_BOARDVENDOR_BCM;
195 len = bcm47xx_nvram_getenv("boardtype", buf, sizeof(buf));
197 err = kstrtou16(strim(buf), 0, &iv->boardinfo.type);
199 pr_warn("Couldn't parse nvram board type entry with value \"%s\"\n",
203 memset(&iv->sprom, 0, sizeof(struct ssb_sprom));
204 ssb_fill_sprom_with_fallback(bus, &iv->sprom);
206 if (bcm47xx_nvram_getenv("cardbus", buf, sizeof(buf)) >= 0)
207 iv->has_cardbus_slot = !!simple_strtoul(buf, NULL, 10);