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210 lines
4.5 KiB
210 lines
4.5 KiB
/* |
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* Sonics Silicon Backplane SoC host related functions. |
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* Subsystem core |
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* |
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* Copyright 2005, Broadcom Corporation |
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* Copyright 2006, 2007, Michael Buesch <[email protected]> |
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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 "ssb_private.h" |
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#include <linux/bcm47xx_nvram.h> |
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#include <linux/ssb/ssb.h> |
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static u8 ssb_host_soc_read8(struct ssb_device *dev, u16 offset) |
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{ |
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struct ssb_bus *bus = dev->bus; |
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offset += dev->core_index * SSB_CORE_SIZE; |
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return readb(bus->mmio + offset); |
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} |
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static u16 ssb_host_soc_read16(struct ssb_device *dev, u16 offset) |
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{ |
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struct ssb_bus *bus = dev->bus; |
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offset += dev->core_index * SSB_CORE_SIZE; |
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return readw(bus->mmio + offset); |
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} |
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static u32 ssb_host_soc_read32(struct ssb_device *dev, u16 offset) |
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{ |
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struct ssb_bus *bus = dev->bus; |
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offset += dev->core_index * SSB_CORE_SIZE; |
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return readl(bus->mmio + offset); |
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} |
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#ifdef CONFIG_SSB_BLOCKIO |
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static void ssb_host_soc_block_read(struct ssb_device *dev, void *buffer, |
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size_t count, u16 offset, u8 reg_width) |
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{ |
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struct ssb_bus *bus = dev->bus; |
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void __iomem *addr; |
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offset += dev->core_index * SSB_CORE_SIZE; |
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addr = bus->mmio + 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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#endif /* CONFIG_SSB_BLOCKIO */ |
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static void ssb_host_soc_write8(struct ssb_device *dev, u16 offset, u8 value) |
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{ |
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struct ssb_bus *bus = dev->bus; |
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offset += dev->core_index * SSB_CORE_SIZE; |
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writeb(value, bus->mmio + offset); |
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} |
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static void ssb_host_soc_write16(struct ssb_device *dev, u16 offset, u16 value) |
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{ |
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struct ssb_bus *bus = dev->bus; |
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offset += dev->core_index * SSB_CORE_SIZE; |
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writew(value, bus->mmio + offset); |
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} |
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static void ssb_host_soc_write32(struct ssb_device *dev, u16 offset, u32 value) |
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{ |
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struct ssb_bus *bus = dev->bus; |
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offset += dev->core_index * SSB_CORE_SIZE; |
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writel(value, bus->mmio + offset); |
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} |
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#ifdef CONFIG_SSB_BLOCKIO |
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static void ssb_host_soc_block_write(struct ssb_device *dev, const void *buffer, |
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size_t count, u16 offset, u8 reg_width) |
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{ |
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struct ssb_bus *bus = dev->bus; |
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void __iomem *addr; |
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offset += dev->core_index * SSB_CORE_SIZE; |
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addr = bus->mmio + 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_SSB_BLOCKIO */ |
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/* Ops for the plain SSB bus without a host-device (no PCI or PCMCIA). */ |
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const struct ssb_bus_ops ssb_host_soc_ops = { |
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.read8 = ssb_host_soc_read8, |
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.read16 = ssb_host_soc_read16, |
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.read32 = ssb_host_soc_read32, |
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.write8 = ssb_host_soc_write8, |
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.write16 = ssb_host_soc_write16, |
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.write32 = ssb_host_soc_write32, |
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#ifdef CONFIG_SSB_BLOCKIO |
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.block_read = ssb_host_soc_block_read, |
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.block_write = ssb_host_soc_block_write, |
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#endif |
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}; |
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int ssb_host_soc_get_invariants(struct ssb_bus *bus, |
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struct ssb_init_invariants *iv) |
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{ |
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char buf[20]; |
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int len, err; |
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/* Fill boardinfo structure */ |
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memset(&iv->boardinfo, 0, sizeof(struct ssb_boardinfo)); |
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len = bcm47xx_nvram_getenv("boardvendor", buf, sizeof(buf)); |
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if (len > 0) { |
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err = kstrtou16(strim(buf), 0, &iv->boardinfo.vendor); |
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if (err) |
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pr_warn("Couldn't parse nvram board vendor entry with value \"%s\"\n", |
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buf); |
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} |
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if (!iv->boardinfo.vendor) |
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iv->boardinfo.vendor = SSB_BOARDVENDOR_BCM; |
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len = bcm47xx_nvram_getenv("boardtype", buf, sizeof(buf)); |
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if (len > 0) { |
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err = kstrtou16(strim(buf), 0, &iv->boardinfo.type); |
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if (err) |
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pr_warn("Couldn't parse nvram board type entry with value \"%s\"\n", |
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buf); |
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} |
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memset(&iv->sprom, 0, sizeof(struct ssb_sprom)); |
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ssb_fill_sprom_with_fallback(bus, &iv->sprom); |
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if (bcm47xx_nvram_getenv("cardbus", buf, sizeof(buf)) >= 0) |
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iv->has_cardbus_slot = !!simple_strtoul(buf, NULL, 10); |
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return 0; |
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}
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