[OpenWrt-Devel] [PATCH 23/32] atheros: ar2315-pci: update DMA offset macroses

[Sergey Ryazanov]

Remove duplicated macroses, which define DMA offset (SDRAM baseaddress).

Signed-off-by: Sergey Ryazanov <ryazanov.s.a at gmail.com>
---
 target/linux/atheros/patches-3.14/100-board.patch  | 29 +++++++++++++---------
 .../atheros/patches-3.14/105-ar2315_pci.patch      | 11 +++++---
 2 files changed, 24 insertions(+), 16 deletions(-)

diff --git a/target/linux/atheros/patches-3.14/100-board.patch b/target/linux/atheros/patches-3.14/100-board.patch
index 4512d55..4cc0246 100644
--- a/target/linux/atheros/patches-3.14/100-board.patch
+++ b/target/linux/atheros/patches-3.14/100-board.patch
@@ -524,7 +524,7 @@
 +#endif /* __ASM_MACH_AR231X_CPU_FEATURE_OVERRIDES_H */
 --- /dev/null
 +++ b/arch/mips/include/asm/mach-ar231x/dma-coherence.h
-@@ -0,0 +1,77 @@
+@@ -0,0 +1,76 @@
 +/*
 + * This file is subject to the terms and conditions of the GNU General Public
 + * License.  See the file "COPYING" in the main directory of this archive
@@ -537,9 +537,8 @@
 +#ifndef __ASM_MACH_AR231X_DMA_COHERENCE_H
 +#define __ASM_MACH_AR231X_DMA_COHERENCE_H
 +
-+#define PCI_DMA_OFFSET	0x20000000
-+
 +#include <linux/device.h>
++#include <ar2315_regs.h>
 +
 +static inline dma_addr_t ar231x_dev_offset(struct device *dev)
 +{
@@ -547,7 +546,7 @@
 +	extern struct bus_type pci_bus_type;
 +
 +	if (dev && dev->bus == &pci_bus_type)
-+		return PCI_DMA_OFFSET;
++		return AR2315_PCI_HOST_SDRAM_BASEADDR;
 +#endif
 +	return 0;
 +}
@@ -674,7 +673,7 @@
 +#endif /* __ASM_MACH_AR231X_WAR_H */
 --- /dev/null
 +++ b/arch/mips/include/asm/mach-ar231x/ar2315_regs.h
-@@ -0,0 +1,625 @@
+@@ -0,0 +1,631 @@
 +/*
 + * Register definitions for AR2315+
 + *
@@ -1291,13 +1290,19 @@
 +#define AR2315_IRCFG_SEQ_END_WIN_THRESH	0x001f0000
 +#define AR2315_IRCFG_NUM_BACKOFF_WORDS	0x01e00000
 +
-+#define HOST_PCI_DEV_ID         3
-+#define HOST_PCI_MBAR0          0x10000000
-+#define HOST_PCI_MBAR1          0x20000000
-+#define HOST_PCI_MBAR2          0x30000000
-+
-+#define HOST_PCI_SDRAM_BASEADDR HOST_PCI_MBAR1
-+#define PCI_DEVICE_MEM_SPACE    0x800000
++/*
++ * We need some arbitrary non-zero value to be programmed to the BAR1 register
++ * of PCI host controller to enable DMA. The same value should be used as the
++ * offset to calculate the physical address of DMA buffer for PCI devices.
++ */
++#define AR2315_PCI_HOST_SDRAM_BASEADDR	0x20000000
++
++/* ??? access BAR */
++#define AR2315_PCI_HOST_MBAR0		0x10000000
++/* RAM access BAR */
++#define AR2315_PCI_HOST_MBAR1		AR2315_PCI_HOST_SDRAM_BASEADDR
++/* ??? access BAR */
++#define AR2315_PCI_HOST_MBAR2		0x30000000
 +
 +#endif /* __ASM_MACH_AR231X_AR2315_REGS_H */
 --- /dev/null
diff --git a/target/linux/atheros/patches-3.14/105-ar2315_pci.patch b/target/linux/atheros/patches-3.14/105-ar2315_pci.patch
index 1460299..5c437dc 100644
--- a/target/linux/atheros/patches-3.14/105-ar2315_pci.patch
+++ b/target/linux/atheros/patches-3.14/105-ar2315_pci.patch
@@ -7,7 +7,7 @@
 +obj-$(CONFIG_ATHEROS_AR2315_PCI) += pci.o
 --- /dev/null
 +++ b/arch/mips/ar231x/pci.c
-@@ -0,0 +1,337 @@
+@@ -0,0 +1,340 @@
 +/*
 + * This program is free software; you can redistribute it and/or
 + * modify it under the terms of the GNU General Public License
@@ -198,9 +198,12 @@
 +		return -ENODEV;
 +
 +	/* Program MBARs */
-+	ar2315_pci_local_cfg_wr(devfn, PCI_BASE_ADDRESS_0, HOST_PCI_MBAR0);
-+	ar2315_pci_local_cfg_wr(devfn, PCI_BASE_ADDRESS_1, HOST_PCI_MBAR1);
-+	ar2315_pci_local_cfg_wr(devfn, PCI_BASE_ADDRESS_2, HOST_PCI_MBAR2);
++	ar2315_pci_local_cfg_wr(devfn, PCI_BASE_ADDRESS_0,
++				AR2315_PCI_HOST_MBAR0);
++	ar2315_pci_local_cfg_wr(devfn, PCI_BASE_ADDRESS_1,
++				AR2315_PCI_HOST_MBAR1);
++	ar2315_pci_local_cfg_wr(devfn, PCI_BASE_ADDRESS_2,
++				AR2315_PCI_HOST_MBAR2);
 +
 +	/* Run */
 +	ar2315_pci_local_cfg_wr(devfn, PCI_COMMAND, PCI_COMMAND_MEMORY |
-- 
1.8.1.5
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