mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-12-18 17:35:05 +02:00
bf183aeff8
* this adds sflash support for ssb devices * the flash is now a platform device * minor updates git-svn-id: svn://svn.openwrt.org/openwrt/trunk@27902 3c298f89-4303-0410-b956-a3cf2f4a3e73
418 lines
9.9 KiB
Diff
418 lines
9.9 KiB
Diff
From d743a740b76a6be9e88fe1ae6991682927a7769c Mon Sep 17 00:00:00 2001
|
|
From: Hauke Mehrtens <hauke@hauke-m.de>
|
|
Date: Sat, 18 Jun 2011 14:31:53 +0200
|
|
Subject: [PATCH 04/26] bcma: add SOC bus
|
|
MIME-Version: 1.0
|
|
Content-Type: text/plain; charset=UTF-8
|
|
Content-Transfer-Encoding: 8bit
|
|
|
|
This patch adds support for using bcma on a Broadcom SoC as the system
|
|
bus. An SoC like the bcm4716 could register this bus and use it to
|
|
searches for the bcma cores and register the devices on this bus.
|
|
|
|
BCMA_HOSTTYPE_NONE was intended for SoCs at first but BCMA_HOSTTYPE_SOC
|
|
is a better name.
|
|
|
|
Acked-by: Rafał Miłecki <zajec5@gmail.com>
|
|
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
|
|
---
|
|
drivers/bcma/Kconfig | 4 +
|
|
drivers/bcma/Makefile | 1 +
|
|
drivers/bcma/core.c | 2 +
|
|
drivers/bcma/driver_pci.c | 9 ++-
|
|
drivers/bcma/host_soc.c | 183 +++++++++++++++++++++++++++++++++++++++++
|
|
drivers/bcma/main.c | 9 ++-
|
|
drivers/bcma/scan.c | 42 ++++++++-
|
|
include/linux/bcma/bcma.h | 5 +-
|
|
include/linux/bcma/bcma_soc.h | 16 ++++
|
|
9 files changed, 263 insertions(+), 8 deletions(-)
|
|
create mode 100644 drivers/bcma/host_soc.c
|
|
create mode 100644 include/linux/bcma/bcma_soc.h
|
|
|
|
--- a/drivers/bcma/Kconfig
|
|
+++ b/drivers/bcma/Kconfig
|
|
@@ -34,6 +34,10 @@ config BCMA_DRIVER_PCI_HOSTMODE
|
|
help
|
|
PCI core hostmode operation (external PCI bus).
|
|
|
|
+config BCMA_HOST_SOC
|
|
+ bool
|
|
+ depends on BCMA && MIPS
|
|
+
|
|
config BCMA_DEBUG
|
|
bool "BCMA debugging"
|
|
depends on BCMA
|
|
--- a/drivers/bcma/Makefile
|
|
+++ b/drivers/bcma/Makefile
|
|
@@ -3,6 +3,7 @@ bcma-y += driver_chipcommon.o driver
|
|
bcma-y += driver_pci.o
|
|
bcma-$(CONFIG_BCMA_DRIVER_PCI_HOSTMODE) += driver_pci_host.o
|
|
bcma-$(CONFIG_BCMA_HOST_PCI) += host_pci.o
|
|
+bcma-$(CONFIG_BCMA_HOST_SOC) += host_soc.o
|
|
obj-$(CONFIG_BCMA) += bcma.o
|
|
|
|
ccflags-$(CONFIG_BCMA_DEBUG) := -DDEBUG
|
|
--- a/drivers/bcma/core.c
|
|
+++ b/drivers/bcma/core.c
|
|
@@ -110,6 +110,8 @@ EXPORT_SYMBOL_GPL(bcma_core_pll_ctl);
|
|
u32 bcma_core_dma_translation(struct bcma_device *core)
|
|
{
|
|
switch (core->bus->hosttype) {
|
|
+ case BCMA_HOSTTYPE_SOC:
|
|
+ return 0;
|
|
case BCMA_HOSTTYPE_PCI:
|
|
if (bcma_aread32(core, BCMA_IOST) & BCMA_IOST_DMA64)
|
|
return BCMA_DMA_TRANSLATION_DMA64_CMT;
|
|
--- a/drivers/bcma/driver_pci.c
|
|
+++ b/drivers/bcma/driver_pci.c
|
|
@@ -208,7 +208,14 @@ int bcma_core_pci_irq_ctl(struct bcma_dr
|
|
{
|
|
struct pci_dev *pdev = pc->core->bus->host_pci;
|
|
u32 coremask, tmp;
|
|
- int err;
|
|
+ int err = 0;
|
|
+
|
|
+ if (core->bus->hosttype != BCMA_HOSTTYPE_PCI) {
|
|
+ /* This bcma device is not on a PCI host-bus. So the IRQs are
|
|
+ * not routed through the PCI core.
|
|
+ * So we must not enable routing through the PCI core. */
|
|
+ goto out;
|
|
+ }
|
|
|
|
err = pci_read_config_dword(pdev, BCMA_PCI_IRQMASK, &tmp);
|
|
if (err)
|
|
--- /dev/null
|
|
+++ b/drivers/bcma/host_soc.c
|
|
@@ -0,0 +1,183 @@
|
|
+/*
|
|
+ * Broadcom specific AMBA
|
|
+ * System on Chip (SoC) Host
|
|
+ *
|
|
+ * Licensed under the GNU/GPL. See COPYING for details.
|
|
+ */
|
|
+
|
|
+#include "bcma_private.h"
|
|
+#include "scan.h"
|
|
+#include <linux/bcma/bcma.h>
|
|
+#include <linux/bcma/bcma_soc.h>
|
|
+
|
|
+static u8 bcma_host_soc_read8(struct bcma_device *core, u16 offset)
|
|
+{
|
|
+ return readb(core->io_addr + offset);
|
|
+}
|
|
+
|
|
+static u16 bcma_host_soc_read16(struct bcma_device *core, u16 offset)
|
|
+{
|
|
+ return readw(core->io_addr + offset);
|
|
+}
|
|
+
|
|
+static u32 bcma_host_soc_read32(struct bcma_device *core, u16 offset)
|
|
+{
|
|
+ return readl(core->io_addr + offset);
|
|
+}
|
|
+
|
|
+static void bcma_host_soc_write8(struct bcma_device *core, u16 offset,
|
|
+ u8 value)
|
|
+{
|
|
+ writeb(value, core->io_addr + offset);
|
|
+}
|
|
+
|
|
+static void bcma_host_soc_write16(struct bcma_device *core, u16 offset,
|
|
+ u16 value)
|
|
+{
|
|
+ writew(value, core->io_addr + offset);
|
|
+}
|
|
+
|
|
+static void bcma_host_soc_write32(struct bcma_device *core, u16 offset,
|
|
+ u32 value)
|
|
+{
|
|
+ writel(value, core->io_addr + offset);
|
|
+}
|
|
+
|
|
+#ifdef CONFIG_BCMA_BLOCKIO
|
|
+static void bcma_host_soc_block_read(struct bcma_device *core, void *buffer,
|
|
+ size_t count, u16 offset, u8 reg_width)
|
|
+{
|
|
+ void __iomem *addr = core->io_addr + offset;
|
|
+
|
|
+ switch (reg_width) {
|
|
+ case sizeof(u8): {
|
|
+ u8 *buf = buffer;
|
|
+
|
|
+ while (count) {
|
|
+ *buf = __raw_readb(addr);
|
|
+ buf++;
|
|
+ count--;
|
|
+ }
|
|
+ break;
|
|
+ }
|
|
+ case sizeof(u16): {
|
|
+ __le16 *buf = buffer;
|
|
+
|
|
+ WARN_ON(count & 1);
|
|
+ while (count) {
|
|
+ *buf = (__force __le16)__raw_readw(addr);
|
|
+ buf++;
|
|
+ count -= 2;
|
|
+ }
|
|
+ break;
|
|
+ }
|
|
+ case sizeof(u32): {
|
|
+ __le32 *buf = buffer;
|
|
+
|
|
+ WARN_ON(count & 3);
|
|
+ while (count) {
|
|
+ *buf = (__force __le32)__raw_readl(addr);
|
|
+ buf++;
|
|
+ count -= 4;
|
|
+ }
|
|
+ break;
|
|
+ }
|
|
+ default:
|
|
+ WARN_ON(1);
|
|
+ }
|
|
+}
|
|
+
|
|
+static void bcma_host_soc_block_write(struct bcma_device *core,
|
|
+ const void *buffer,
|
|
+ size_t count, u16 offset, u8 reg_width)
|
|
+{
|
|
+ void __iomem *addr = core->io_addr + offset;
|
|
+
|
|
+ switch (reg_width) {
|
|
+ case sizeof(u8): {
|
|
+ const u8 *buf = buffer;
|
|
+
|
|
+ while (count) {
|
|
+ __raw_writeb(*buf, addr);
|
|
+ buf++;
|
|
+ count--;
|
|
+ }
|
|
+ break;
|
|
+ }
|
|
+ case sizeof(u16): {
|
|
+ const __le16 *buf = buffer;
|
|
+
|
|
+ WARN_ON(count & 1);
|
|
+ while (count) {
|
|
+ __raw_writew((__force u16)(*buf), addr);
|
|
+ buf++;
|
|
+ count -= 2;
|
|
+ }
|
|
+ break;
|
|
+ }
|
|
+ case sizeof(u32): {
|
|
+ const __le32 *buf = buffer;
|
|
+
|
|
+ WARN_ON(count & 3);
|
|
+ while (count) {
|
|
+ __raw_writel((__force u32)(*buf), addr);
|
|
+ buf++;
|
|
+ count -= 4;
|
|
+ }
|
|
+ break;
|
|
+ }
|
|
+ default:
|
|
+ WARN_ON(1);
|
|
+ }
|
|
+}
|
|
+#endif /* CONFIG_BCMA_BLOCKIO */
|
|
+
|
|
+static u32 bcma_host_soc_aread32(struct bcma_device *core, u16 offset)
|
|
+{
|
|
+ return readl(core->io_wrap + offset);
|
|
+}
|
|
+
|
|
+static void bcma_host_soc_awrite32(struct bcma_device *core, u16 offset,
|
|
+ u32 value)
|
|
+{
|
|
+ writel(value, core->io_wrap + offset);
|
|
+}
|
|
+
|
|
+const struct bcma_host_ops bcma_host_soc_ops = {
|
|
+ .read8 = bcma_host_soc_read8,
|
|
+ .read16 = bcma_host_soc_read16,
|
|
+ .read32 = bcma_host_soc_read32,
|
|
+ .write8 = bcma_host_soc_write8,
|
|
+ .write16 = bcma_host_soc_write16,
|
|
+ .write32 = bcma_host_soc_write32,
|
|
+#ifdef CONFIG_BCMA_BLOCKIO
|
|
+ .block_read = bcma_host_soc_block_read,
|
|
+ .block_write = bcma_host_soc_block_write,
|
|
+#endif
|
|
+ .aread32 = bcma_host_soc_aread32,
|
|
+ .awrite32 = bcma_host_soc_awrite32,
|
|
+};
|
|
+
|
|
+int __init bcma_host_soc_register(struct bcma_soc *soc)
|
|
+{
|
|
+ struct bcma_bus *bus = &soc->bus;
|
|
+ int err;
|
|
+
|
|
+ /* iomap only first core. We have to read some register on this core
|
|
+ * to scan the bus.
|
|
+ */
|
|
+ bus->mmio = ioremap_nocache(BCMA_ADDR_BASE, BCMA_CORE_SIZE * 1);
|
|
+ if (!bus->mmio)
|
|
+ return -ENOMEM;
|
|
+
|
|
+ /* Host specific */
|
|
+ bus->hosttype = BCMA_HOSTTYPE_SOC;
|
|
+ bus->ops = &bcma_host_soc_ops;
|
|
+
|
|
+ /* Register */
|
|
+ err = bcma_bus_early_register(bus, &soc->core_cc, &soc->core_mips);
|
|
+ if (err)
|
|
+ iounmap(bus->mmio);
|
|
+
|
|
+ return err;
|
|
+}
|
|
--- a/drivers/bcma/main.c
|
|
+++ b/drivers/bcma/main.c
|
|
@@ -66,6 +66,10 @@ static struct bcma_device *bcma_find_cor
|
|
static void bcma_release_core_dev(struct device *dev)
|
|
{
|
|
struct bcma_device *core = container_of(dev, struct bcma_device, dev);
|
|
+ if (core->io_addr)
|
|
+ iounmap(core->io_addr);
|
|
+ if (core->io_wrap)
|
|
+ iounmap(core->io_wrap);
|
|
kfree(core);
|
|
}
|
|
|
|
@@ -93,7 +97,10 @@ static int bcma_register_cores(struct bc
|
|
core->dma_dev = &bus->host_pci->dev;
|
|
core->irq = bus->host_pci->irq;
|
|
break;
|
|
- case BCMA_HOSTTYPE_NONE:
|
|
+ case BCMA_HOSTTYPE_SOC:
|
|
+ core->dev.dma_mask = &core->dev.coherent_dma_mask;
|
|
+ core->dma_dev = &core->dev;
|
|
+ break;
|
|
case BCMA_HOSTTYPE_SDIO:
|
|
break;
|
|
}
|
|
--- a/drivers/bcma/scan.c
|
|
+++ b/drivers/bcma/scan.c
|
|
@@ -337,6 +337,16 @@ static int bcma_get_next_core(struct bcm
|
|
}
|
|
}
|
|
}
|
|
+ if (bus->hosttype == BCMA_HOSTTYPE_SOC) {
|
|
+ core->io_addr = ioremap_nocache(core->addr, BCMA_CORE_SIZE);
|
|
+ if (!core->io_addr)
|
|
+ return -ENOMEM;
|
|
+ core->io_wrap = ioremap_nocache(core->wrap, BCMA_CORE_SIZE);
|
|
+ if (!core->io_wrap) {
|
|
+ iounmap(core->io_addr);
|
|
+ return -ENOMEM;
|
|
+ }
|
|
+ }
|
|
return 0;
|
|
}
|
|
|
|
@@ -369,7 +379,14 @@ int bcma_bus_scan(struct bcma_bus *bus)
|
|
bcma_init_bus(bus);
|
|
|
|
erombase = bcma_scan_read32(bus, 0, BCMA_CC_EROM);
|
|
- eromptr = bus->mmio;
|
|
+ if (bus->hosttype == BCMA_HOSTTYPE_SOC) {
|
|
+ eromptr = ioremap_nocache(erombase, BCMA_CORE_SIZE);
|
|
+ if (!eromptr)
|
|
+ return -ENOMEM;
|
|
+ } else {
|
|
+ eromptr = bus->mmio;
|
|
+ }
|
|
+
|
|
eromend = eromptr + BCMA_CORE_SIZE / sizeof(u32);
|
|
|
|
bcma_scan_switch_core(bus, erombase);
|
|
@@ -404,6 +421,9 @@ int bcma_bus_scan(struct bcma_bus *bus)
|
|
list_add(&core->list, &bus->cores);
|
|
}
|
|
|
|
+ if (bus->hosttype == BCMA_HOSTTYPE_SOC)
|
|
+ iounmap(eromptr);
|
|
+
|
|
return 0;
|
|
}
|
|
|
|
@@ -414,10 +434,18 @@ int __init bcma_bus_scan_early(struct bc
|
|
u32 erombase;
|
|
u32 __iomem *eromptr, *eromend;
|
|
|
|
- int err, core_num = 0;
|
|
+ int err = -ENODEV;
|
|
+ int core_num = 0;
|
|
|
|
erombase = bcma_scan_read32(bus, 0, BCMA_CC_EROM);
|
|
- eromptr = bus->mmio;
|
|
+ if (bus->hosttype == BCMA_HOSTTYPE_SOC) {
|
|
+ eromptr = ioremap_nocache(erombase, BCMA_CORE_SIZE);
|
|
+ if (!eromptr)
|
|
+ return -ENOMEM;
|
|
+ } else {
|
|
+ eromptr = bus->mmio;
|
|
+ }
|
|
+
|
|
eromend = eromptr + BCMA_CORE_SIZE / sizeof(u32);
|
|
|
|
bcma_scan_switch_core(bus, erombase);
|
|
@@ -447,8 +475,12 @@ int __init bcma_bus_scan_early(struct bc
|
|
core->id.class);
|
|
|
|
list_add(&core->list, &bus->cores);
|
|
- return 0;
|
|
+ err = 0;
|
|
+ break;
|
|
}
|
|
|
|
- return -ENODEV;
|
|
+ if (bus->hosttype == BCMA_HOSTTYPE_SOC)
|
|
+ iounmap(eromptr);
|
|
+
|
|
+ return err;
|
|
}
|
|
--- a/include/linux/bcma/bcma.h
|
|
+++ b/include/linux/bcma/bcma.h
|
|
@@ -14,9 +14,9 @@ struct bcma_device;
|
|
struct bcma_bus;
|
|
|
|
enum bcma_hosttype {
|
|
- BCMA_HOSTTYPE_NONE,
|
|
BCMA_HOSTTYPE_PCI,
|
|
BCMA_HOSTTYPE_SDIO,
|
|
+ BCMA_HOSTTYPE_SOC,
|
|
};
|
|
|
|
struct bcma_chipinfo {
|
|
@@ -138,6 +138,9 @@ struct bcma_device {
|
|
u32 addr;
|
|
u32 wrap;
|
|
|
|
+ void __iomem *io_addr;
|
|
+ void __iomem *io_wrap;
|
|
+
|
|
void *drvdata;
|
|
struct list_head list;
|
|
};
|
|
--- /dev/null
|
|
+++ b/include/linux/bcma/bcma_soc.h
|
|
@@ -0,0 +1,16 @@
|
|
+#ifndef LINUX_BCMA_SOC_H_
|
|
+#define LINUX_BCMA_SOC_H_
|
|
+
|
|
+#include <linux/bcma/bcma.h>
|
|
+
|
|
+struct bcma_soc {
|
|
+ struct bcma_bus bus;
|
|
+ struct bcma_device core_cc;
|
|
+ struct bcma_device core_mips;
|
|
+};
|
|
+
|
|
+int __init bcma_host_soc_register(struct bcma_soc *soc);
|
|
+
|
|
+int bcma_bus_register(struct bcma_bus *bus);
|
|
+
|
|
+#endif /* LINUX_BCMA_SOC_H_ */
|