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/ssb/ssb.h>
13 #include "ssb_private.h"
15 static u8 ssb_host_soc_read8(struct ssb_device *dev, u16 offset)
17 struct ssb_bus *bus = dev->bus;
19 offset += dev->core_index * SSB_CORE_SIZE;
20 return readb(bus->mmio + offset);
23 static u16 ssb_host_soc_read16(struct ssb_device *dev, u16 offset)
25 struct ssb_bus *bus = dev->bus;
27 offset += dev->core_index * SSB_CORE_SIZE;
28 return readw(bus->mmio + offset);
31 static u32 ssb_host_soc_read32(struct ssb_device *dev, u16 offset)
33 struct ssb_bus *bus = dev->bus;
35 offset += dev->core_index * SSB_CORE_SIZE;
36 return readl(bus->mmio + offset);
39 #ifdef CONFIG_SSB_BLOCKIO
40 static void ssb_host_soc_block_read(struct ssb_device *dev, void *buffer,
41 size_t count, u16 offset, u8 reg_width)
43 struct ssb_bus *bus = dev->bus;
46 offset += dev->core_index * SSB_CORE_SIZE;
47 addr = bus->mmio + offset;
54 *buf = __raw_readb(addr);
63 SSB_WARN_ON(count & 1);
65 *buf = (__force __le16)__raw_readw(addr);
74 SSB_WARN_ON(count & 3);
76 *buf = (__force __le32)__raw_readl(addr);
86 #endif /* CONFIG_SSB_BLOCKIO */
88 static void ssb_host_soc_write8(struct ssb_device *dev, u16 offset, u8 value)
90 struct ssb_bus *bus = dev->bus;
92 offset += dev->core_index * SSB_CORE_SIZE;
93 writeb(value, bus->mmio + offset);
96 static void ssb_host_soc_write16(struct ssb_device *dev, u16 offset, u16 value)
98 struct ssb_bus *bus = dev->bus;
100 offset += dev->core_index * SSB_CORE_SIZE;
101 writew(value, bus->mmio + offset);
104 static void ssb_host_soc_write32(struct ssb_device *dev, u16 offset, u32 value)
106 struct ssb_bus *bus = dev->bus;
108 offset += dev->core_index * SSB_CORE_SIZE;
109 writel(value, bus->mmio + offset);
112 #ifdef CONFIG_SSB_BLOCKIO
113 static void ssb_host_soc_block_write(struct ssb_device *dev, const void *buffer,
114 size_t count, u16 offset, u8 reg_width)
116 struct ssb_bus *bus = dev->bus;
119 offset += dev->core_index * SSB_CORE_SIZE;
120 addr = bus->mmio + offset;
124 const u8 *buf = buffer;
127 __raw_writeb(*buf, addr);
134 const __le16 *buf = buffer;
136 SSB_WARN_ON(count & 1);
138 __raw_writew((__force u16)(*buf), addr);
145 const __le32 *buf = buffer;
147 SSB_WARN_ON(count & 3);
149 __raw_writel((__force u32)(*buf), addr);
159 #endif /* CONFIG_SSB_BLOCKIO */
161 /* Ops for the plain SSB bus without a host-device (no PCI or PCMCIA). */
162 const struct ssb_bus_ops ssb_host_soc_ops = {
163 .read8 = ssb_host_soc_read8,
164 .read16 = ssb_host_soc_read16,
165 .read32 = ssb_host_soc_read32,
166 .write8 = ssb_host_soc_write8,
167 .write16 = ssb_host_soc_write16,
168 .write32 = ssb_host_soc_write32,
169 #ifdef CONFIG_SSB_BLOCKIO
170 .block_read = ssb_host_soc_block_read,
171 .block_write = ssb_host_soc_block_write,