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path: root/target/linux/brcm47xx/patches-2.6.25/680-ssb-support-8bit-writes.patch
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-rw-r--r--target/linux/brcm47xx/patches-2.6.25/680-ssb-support-8bit-writes.patch197
1 files changed, 197 insertions, 0 deletions
diff --git a/target/linux/brcm47xx/patches-2.6.25/680-ssb-support-8bit-writes.patch b/target/linux/brcm47xx/patches-2.6.25/680-ssb-support-8bit-writes.patch
new file mode 100644
index 0000000..82b64a3
--- /dev/null
+++ b/target/linux/brcm47xx/patches-2.6.25/680-ssb-support-8bit-writes.patch
@@ -0,0 +1,197 @@
+Add support for 8bit reads/writes to SSB.
+Index: linux-2.6.23.16/drivers/ssb/main.c
+===================================================================
+--- linux-2.6.23.16.orig/drivers/ssb/main.c 2008-02-20 14:10:07.000000000 +0100
++++ linux-2.6.23.16/drivers/ssb/main.c 2008-02-20 18:34:48.000000000 +0100
+@@ -507,6 +507,14 @@ error:
+ return err;
+ }
+
++static u8 ssb_ssb_read8(struct ssb_device *dev, u16 offset)
++{
++ struct ssb_bus *bus = dev->bus;
++
++ offset += dev->core_index * SSB_CORE_SIZE;
++ return readb(bus->mmio + offset);
++}
++
+ static u16 ssb_ssb_read16(struct ssb_device *dev, u16 offset)
+ {
+ struct ssb_bus *bus = dev->bus;
+@@ -523,6 +531,14 @@ static u32 ssb_ssb_read32(struct ssb_dev
+ return readl(bus->mmio + offset);
+ }
+
++static void ssb_ssb_write8(struct ssb_device *dev, u16 offset, u8 value)
++{
++ struct ssb_bus *bus = dev->bus;
++
++ offset += dev->core_index * SSB_CORE_SIZE;
++ writeb(value, bus->mmio + offset);
++}
++
+ static void ssb_ssb_write16(struct ssb_device *dev, u16 offset, u16 value)
+ {
+ struct ssb_bus *bus = dev->bus;
+@@ -541,8 +557,10 @@ static void ssb_ssb_write32(struct ssb_d
+
+ /* Ops for the plain SSB bus without a host-device (no PCI or PCMCIA). */
+ static const struct ssb_bus_ops ssb_ssb_ops = {
++ .read8 = ssb_ssb_read8,
+ .read16 = ssb_ssb_read16,
+ .read32 = ssb_ssb_read32,
++ .write8 = ssb_ssb_write8,
+ .write16 = ssb_ssb_write16,
+ .write32 = ssb_ssb_write32,
+ };
+Index: linux-2.6.23.16/drivers/ssb/pci.c
+===================================================================
+--- linux-2.6.23.16.orig/drivers/ssb/pci.c 2008-02-20 14:10:03.000000000 +0100
++++ linux-2.6.23.16/drivers/ssb/pci.c 2008-02-20 14:10:07.000000000 +0100
+@@ -572,6 +572,19 @@ static inline int ssb_pci_assert_buspowe
+ }
+ #endif /* DEBUG */
+
++static u8 ssb_pci_read8(struct ssb_device *dev, u16 offset)
++{
++ struct ssb_bus *bus = dev->bus;
++
++ if (unlikely(ssb_pci_assert_buspower(bus)))
++ return 0xFF;
++ if (unlikely(bus->mapped_device != dev)) {
++ if (unlikely(ssb_pci_switch_core(bus, dev)))
++ return 0xFF;
++ }
++ return ioread8(bus->mmio + offset);
++}
++
+ static u16 ssb_pci_read16(struct ssb_device *dev, u16 offset)
+ {
+ struct ssb_bus *bus = dev->bus;
+@@ -598,6 +611,19 @@ static u32 ssb_pci_read32(struct ssb_dev
+ return ioread32(bus->mmio + offset);
+ }
+
++static void ssb_pci_write8(struct ssb_device *dev, u16 offset, u8 value)
++{
++ struct ssb_bus *bus = dev->bus;
++
++ if (unlikely(ssb_pci_assert_buspower(bus)))
++ return;
++ if (unlikely(bus->mapped_device != dev)) {
++ if (unlikely(ssb_pci_switch_core(bus, dev)))
++ return;
++ }
++ iowrite8(value, bus->mmio + offset);
++}
++
+ static void ssb_pci_write16(struct ssb_device *dev, u16 offset, u16 value)
+ {
+ struct ssb_bus *bus = dev->bus;
+@@ -626,8 +652,10 @@ static void ssb_pci_write32(struct ssb_d
+
+ /* Not "static", as it's used in main.c */
+ const struct ssb_bus_ops ssb_pci_ops = {
++ .read8 = ssb_pci_read8,
+ .read16 = ssb_pci_read16,
+ .read32 = ssb_pci_read32,
++ .write8 = ssb_pci_write8,
+ .write16 = ssb_pci_write16,
+ .write32 = ssb_pci_write32,
+ };
+Index: linux-2.6.23.16/drivers/ssb/pcmcia.c
+===================================================================
+--- linux-2.6.23.16.orig/drivers/ssb/pcmcia.c 2008-02-20 14:10:03.000000000 +0100
++++ linux-2.6.23.16/drivers/ssb/pcmcia.c 2008-02-20 14:10:07.000000000 +0100
+@@ -172,6 +172,22 @@ static int select_core_and_segment(struc
+ return 0;
+ }
+
++static u8 ssb_pcmcia_read8(struct ssb_device *dev, u16 offset)
++{
++ struct ssb_bus *bus = dev->bus;
++ unsigned long flags;
++ int err;
++ u8 value = 0xFF;
++
++ spin_lock_irqsave(&bus->bar_lock, flags);
++ err = select_core_and_segment(dev, &offset);
++ if (likely(!err))
++ value = readb(bus->mmio + offset);
++ spin_unlock_irqrestore(&bus->bar_lock, flags);
++
++ return value;
++}
++
+ static u16 ssb_pcmcia_read16(struct ssb_device *dev, u16 offset)
+ {
+ struct ssb_bus *bus = dev->bus;
+@@ -206,6 +222,20 @@ static u32 ssb_pcmcia_read32(struct ssb_
+ return (lo | (hi << 16));
+ }
+
++static void ssb_pcmcia_write8(struct ssb_device *dev, u16 offset, u8 value)
++{
++ struct ssb_bus *bus = dev->bus;
++ unsigned long flags;
++ int err;
++
++ spin_lock_irqsave(&bus->bar_lock, flags);
++ err = select_core_and_segment(dev, &offset);
++ if (likely(!err))
++ writeb(value, bus->mmio + offset);
++ mmiowb();
++ spin_unlock_irqrestore(&bus->bar_lock, flags);
++}
++
+ static void ssb_pcmcia_write16(struct ssb_device *dev, u16 offset, u16 value)
+ {
+ struct ssb_bus *bus = dev->bus;
+@@ -238,8 +268,10 @@ static void ssb_pcmcia_write32(struct ss
+
+ /* Not "static", as it's used in main.c */
+ const struct ssb_bus_ops ssb_pcmcia_ops = {
++ .read8 = ssb_pcmcia_read8,
+ .read16 = ssb_pcmcia_read16,
+ .read32 = ssb_pcmcia_read32,
++ .write8 = ssb_pcmcia_write8,
+ .write16 = ssb_pcmcia_write16,
+ .write32 = ssb_pcmcia_write32,
+ };
+Index: linux-2.6.23.16/include/linux/ssb/ssb.h
+===================================================================
+--- linux-2.6.23.16.orig/include/linux/ssb/ssb.h 2008-02-20 14:10:07.000000000 +0100
++++ linux-2.6.23.16/include/linux/ssb/ssb.h 2008-02-20 18:33:21.000000000 +0100
+@@ -72,8 +72,10 @@ struct ssb_device;
+ /* Lowlevel read/write operations on the device MMIO.
+ * Internal, don't use that outside of ssb. */
+ struct ssb_bus_ops {
++ u8 (*read8)(struct ssb_device *dev, u16 offset);
+ u16 (*read16)(struct ssb_device *dev, u16 offset);
+ u32 (*read32)(struct ssb_device *dev, u16 offset);
++ void (*write8)(struct ssb_device *dev, u16 offset, u8 value);
+ void (*write16)(struct ssb_device *dev, u16 offset, u16 value);
+ void (*write32)(struct ssb_device *dev, u16 offset, u32 value);
+ };
+@@ -344,6 +346,10 @@ void ssb_device_disable(struct ssb_devic
+
+
+ /* Device MMIO register read/write functions. */
++static inline u8 ssb_read8(struct ssb_device *dev, u16 offset)
++{
++ return dev->ops->read8(dev, offset);
++}
+ static inline u16 ssb_read16(struct ssb_device *dev, u16 offset)
+ {
+ return dev->ops->read16(dev, offset);
+@@ -352,6 +358,10 @@ static inline u32 ssb_read32(struct ssb_
+ {
+ return dev->ops->read32(dev, offset);
+ }
++static inline void ssb_write8(struct ssb_device *dev, u16 offset, u8 value)
++{
++ dev->ops->write8(dev, offset, value);
++}
+ static inline void ssb_write16(struct ssb_device *dev, u16 offset, u16 value)
+ {
+ dev->ops->write16(dev, offset, value);
generated by cgit v1.1 at 2024-12-30 13:22:45 +0000