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![Hauke Mehrtens](/assets/img/avatar_default.png)
The functions and structs are not used in an other file and the prototypes are in no header file, just make them static so the compiler is able to optimize them better. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
183 lines
3.6 KiB
C
183 lines
3.6 KiB
C
/*
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* Broadcom specific AMBA
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* System on Chip (SoC) Host
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*
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* Licensed under the GNU/GPL. See COPYING for details.
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*/
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#include "bcma_private.h"
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#include "scan.h"
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#include <linux/bcma/bcma.h>
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#include <linux/bcma/bcma_soc.h>
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static u8 bcma_host_soc_read8(struct bcma_device *core, u16 offset)
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{
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return readb(core->io_addr + offset);
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}
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static u16 bcma_host_soc_read16(struct bcma_device *core, u16 offset)
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{
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return readw(core->io_addr + offset);
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}
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static u32 bcma_host_soc_read32(struct bcma_device *core, u16 offset)
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{
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return readl(core->io_addr + offset);
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}
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static void bcma_host_soc_write8(struct bcma_device *core, u16 offset,
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u8 value)
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{
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writeb(value, core->io_addr + offset);
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}
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static void bcma_host_soc_write16(struct bcma_device *core, u16 offset,
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u16 value)
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{
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writew(value, core->io_addr + offset);
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}
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static void bcma_host_soc_write32(struct bcma_device *core, u16 offset,
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u32 value)
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{
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writel(value, core->io_addr + offset);
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}
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#ifdef CONFIG_BCMA_BLOCKIO
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static void bcma_host_soc_block_read(struct bcma_device *core, void *buffer,
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size_t count, u16 offset, u8 reg_width)
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{
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void __iomem *addr = core->io_addr + offset;
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switch (reg_width) {
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case sizeof(u8): {
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u8 *buf = buffer;
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while (count) {
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*buf = __raw_readb(addr);
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buf++;
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count--;
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}
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break;
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}
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case sizeof(u16): {
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__le16 *buf = buffer;
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WARN_ON(count & 1);
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while (count) {
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*buf = (__force __le16)__raw_readw(addr);
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buf++;
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count -= 2;
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}
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break;
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}
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case sizeof(u32): {
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__le32 *buf = buffer;
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WARN_ON(count & 3);
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while (count) {
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*buf = (__force __le32)__raw_readl(addr);
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buf++;
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count -= 4;
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}
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break;
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}
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default:
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WARN_ON(1);
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}
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}
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static void bcma_host_soc_block_write(struct bcma_device *core,
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const void *buffer,
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size_t count, u16 offset, u8 reg_width)
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{
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void __iomem *addr = core->io_addr + offset;
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switch (reg_width) {
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case sizeof(u8): {
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const u8 *buf = buffer;
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while (count) {
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__raw_writeb(*buf, addr);
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buf++;
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count--;
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}
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break;
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}
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case sizeof(u16): {
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const __le16 *buf = buffer;
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WARN_ON(count & 1);
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while (count) {
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__raw_writew((__force u16)(*buf), addr);
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buf++;
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count -= 2;
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}
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break;
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}
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case sizeof(u32): {
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const __le32 *buf = buffer;
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WARN_ON(count & 3);
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while (count) {
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__raw_writel((__force u32)(*buf), addr);
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buf++;
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count -= 4;
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}
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break;
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}
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default:
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WARN_ON(1);
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}
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}
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#endif /* CONFIG_BCMA_BLOCKIO */
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static u32 bcma_host_soc_aread32(struct bcma_device *core, u16 offset)
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{
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return readl(core->io_wrap + offset);
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}
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static void bcma_host_soc_awrite32(struct bcma_device *core, u16 offset,
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u32 value)
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{
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writel(value, core->io_wrap + offset);
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}
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static const struct bcma_host_ops bcma_host_soc_ops = {
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.read8 = bcma_host_soc_read8,
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.read16 = bcma_host_soc_read16,
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.read32 = bcma_host_soc_read32,
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.write8 = bcma_host_soc_write8,
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.write16 = bcma_host_soc_write16,
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.write32 = bcma_host_soc_write32,
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#ifdef CONFIG_BCMA_BLOCKIO
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.block_read = bcma_host_soc_block_read,
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.block_write = bcma_host_soc_block_write,
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#endif
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.aread32 = bcma_host_soc_aread32,
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.awrite32 = bcma_host_soc_awrite32,
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};
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int __init bcma_host_soc_register(struct bcma_soc *soc)
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{
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struct bcma_bus *bus = &soc->bus;
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int err;
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/* iomap only first core. We have to read some register on this core
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* to scan the bus.
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*/
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bus->mmio = ioremap_nocache(BCMA_ADDR_BASE, BCMA_CORE_SIZE * 1);
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if (!bus->mmio)
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return -ENOMEM;
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/* Host specific */
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bus->hosttype = BCMA_HOSTTYPE_SOC;
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bus->ops = &bcma_host_soc_ops;
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/* Register */
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err = bcma_bus_early_register(bus, &soc->core_cc, &soc->core_mips);
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if (err)
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iounmap(bus->mmio);
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return err;
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}
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