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Date: Thu, 23 Apr 2009 00:40:31 +0900
From: Atsushi Nemoto <anemo@....ocn.ne.jp>
To: linux-mips@...ux-mips.org
Cc: ralf@...ux-mips.org, dan.j.williams@...el.com,
linux-kernel@...r.kernel.org
Subject: [PATCH] TXx9: Add DMAC support (v3)
Add platform support for DMAC of TXx9 SoCs.
Signed-off-by: Atsushi Nemoto <anemo@....ocn.ne.jp>
---
Changes since v2:
* add per channel IRQ resource
arch/mips/include/asm/txx9/dmac.h | 3 ++
arch/mips/include/asm/txx9/tx4927.h | 2 +
arch/mips/include/asm/txx9/tx4938.h | 1 +
arch/mips/include/asm/txx9/tx4939.h | 1 +
arch/mips/txx9/generic/setup.c | 55 +++++++++++++++++++++++++++++++++
arch/mips/txx9/generic/setup_tx4927.c | 12 +++++++
arch/mips/txx9/generic/setup_tx4938.c | 21 +++++++++---
arch/mips/txx9/generic/setup_tx4939.c | 21 +++++++++---
arch/mips/txx9/rbtx4927/setup.c | 4 ++
arch/mips/txx9/rbtx4938/setup.c | 1 +
arch/mips/txx9/rbtx4939/setup.c | 1 +
11 files changed, 112 insertions(+), 10 deletions(-)
diff --git a/arch/mips/include/asm/txx9/dmac.h b/arch/mips/include/asm/txx9/dmac.h
index a87d1c3..5e9151f 100644
--- a/arch/mips/include/asm/txx9/dmac.h
+++ b/arch/mips/include/asm/txx9/dmac.h
@@ -45,4 +45,7 @@ struct txx9dmac_slave {
unsigned int reg_width;
};
+void txx9_dmac_init(int id, unsigned long baseaddr, int irq,
+ const struct txx9dmac_platform_data *pdata);
+
#endif /* __ASM_TXX9_DMAC_H */
diff --git a/arch/mips/include/asm/txx9/tx4927.h b/arch/mips/include/asm/txx9/tx4927.h
index 7d813f1..d92ae07 100644
--- a/arch/mips/include/asm/txx9/tx4927.h
+++ b/arch/mips/include/asm/txx9/tx4927.h
@@ -41,6 +41,7 @@
#define TX4927_SDRAMC_REG (TX4927_REG_BASE + 0x8000)
#define TX4927_EBUSC_REG (TX4927_REG_BASE + 0x9000)
+#define TX4927_DMA_REG (TX4927_REG_BASE + 0xb000)
#define TX4927_PCIC_REG (TX4927_REG_BASE + 0xd000)
#define TX4927_CCFG_REG (TX4927_REG_BASE + 0xe000)
#define TX4927_IRC_REG (TX4927_REG_BASE + 0xf600)
@@ -265,5 +266,6 @@ int tx4927_pciclk66_setup(void);
void tx4927_setup_pcierr_irq(void);
void tx4927_irq_init(void);
void tx4927_mtd_init(int ch);
+void tx4927_dmac_init(int memcpy_chan);
#endif /* __ASM_TXX9_TX4927_H */
diff --git a/arch/mips/include/asm/txx9/tx4938.h b/arch/mips/include/asm/txx9/tx4938.h
index cd8bc20..0758a0c 100644
--- a/arch/mips/include/asm/txx9/tx4938.h
+++ b/arch/mips/include/asm/txx9/tx4938.h
@@ -305,5 +305,6 @@ struct tx4938ide_platform_info {
};
void tx4938_ata_init(unsigned int irq, unsigned int shift, int tune);
+void tx4938_dmac_init(int memcpy_chan0, int memcpy_chan1);
#endif
diff --git a/arch/mips/include/asm/txx9/tx4939.h b/arch/mips/include/asm/txx9/tx4939.h
index f02c50b..1be9798 100644
--- a/arch/mips/include/asm/txx9/tx4939.h
+++ b/arch/mips/include/asm/txx9/tx4939.h
@@ -544,5 +544,6 @@ void tx4939_ata_init(void);
void tx4939_rtc_init(void);
void tx4939_ndfmc_init(unsigned int hold, unsigned int spw,
unsigned char ch_mask, unsigned char wide_mask);
+void tx4939_dmac_init(int memcpy_chan0, int memcpy_chan1);
#endif /* __ASM_TXX9_TX4939_H */
diff --git a/arch/mips/txx9/generic/setup.c b/arch/mips/txx9/generic/setup.c
index 8a266c6..369d863 100644
--- a/arch/mips/txx9/generic/setup.c
+++ b/arch/mips/txx9/generic/setup.c
@@ -33,6 +33,7 @@
#include <asm/txx9/pci.h>
#include <asm/txx9tmr.h>
#include <asm/txx9/ndfmc.h>
+#include <asm/txx9/dmac.h>
#ifdef CONFIG_CPU_TX49XX
#include <asm/txx9/tx4938.h>
#endif
@@ -821,3 +822,57 @@ void __init txx9_iocled_init(unsigned long baseaddr,
{
}
#endif /* CONFIG_LEDS_GPIO */
+
+void __init txx9_dmac_init(int id, unsigned long baseaddr, int irq,
+ const struct txx9dmac_platform_data *pdata)
+{
+#if defined(CONFIG_TXX9_DMAC) || defined(CONFIG_TXX9_DMAC_MODULE)
+ struct resource res[] = {
+ {
+ .start = baseaddr,
+ .end = baseaddr + 0x800 - 1,
+ .flags = IORESOURCE_MEM,
+#ifndef CONFIG_MACH_TX49XX
+ }, {
+ .start = irq,
+ .flags = IORESOURCE_IRQ,
+#endif
+ }
+ };
+#ifdef CONFIG_MACH_TX49XX
+ struct resource chan_res[] = {
+ {
+ .flags = IORESOURCE_IRQ,
+ }
+ };
+#endif
+ struct platform_device *pdev = platform_device_alloc("txx9dmac", id);
+ struct txx9dmac_chan_platform_data cpdata;
+ int i;
+
+ if (!pdev ||
+ platform_device_add_resources(pdev, res, ARRAY_SIZE(res)) ||
+ platform_device_add_data(pdev, pdata, sizeof(*pdata)) ||
+ platform_device_add(pdev)) {
+ platform_device_put(pdev);
+ return;
+ }
+ memset(&cpdata, 0, sizeof(cpdata));
+ cpdata.dmac_dev = pdev;
+ for (i = 0; i < TXX9_DMA_MAX_NR_CHANNELS; i++) {
+#ifdef CONFIG_MACH_TX49XX
+ chan_res[0].start = irq + i;
+#endif
+ pdev = platform_device_alloc("txx9dmac-chan",
+ id * TXX9_DMA_MAX_NR_CHANNELS + i);
+ if (!pdev ||
+#ifdef CONFIG_MACH_TX49XX
+ platform_device_add_resources(pdev, chan_res,
+ ARRAY_SIZE(chan_res)) ||
+#endif
+ platform_device_add_data(pdev, &cpdata, sizeof(cpdata)) ||
+ platform_device_add(pdev))
+ platform_device_put(pdev);
+ }
+#endif
+}
diff --git a/arch/mips/txx9/generic/setup_tx4927.c b/arch/mips/txx9/generic/setup_tx4927.c
index 1093549..6b681cd 100644
--- a/arch/mips/txx9/generic/setup_tx4927.c
+++ b/arch/mips/txx9/generic/setup_tx4927.c
@@ -22,6 +22,7 @@
#include <asm/txx9tmr.h>
#include <asm/txx9pio.h>
#include <asm/txx9/generic.h>
+#include <asm/txx9/dmac.h>
#include <asm/txx9/tx4927.h>
static void __init tx4927_wdr_init(void)
@@ -253,6 +254,17 @@ void __init tx4927_mtd_init(int ch)
txx9_physmap_flash_init(ch, start, size, &pdata);
}
+void __init tx4927_dmac_init(int memcpy_chan)
+{
+ struct txx9dmac_platform_data plat_data = {
+ .memcpy_chan = memcpy_chan,
+ .have_64bit_regs = true,
+ };
+
+ txx9_dmac_init(0, TX4927_DMA_REG & 0xfffffffffULL,
+ TXX9_IRQ_BASE + TX4927_IR_DMA(0), &plat_data);
+}
+
static void __init tx4927_stop_unused_modules(void)
{
__u64 pcfg, rst = 0, ckd = 0;
diff --git a/arch/mips/txx9/generic/setup_tx4938.c b/arch/mips/txx9/generic/setup_tx4938.c
index 3925219..b2b8529 100644
--- a/arch/mips/txx9/generic/setup_tx4938.c
+++ b/arch/mips/txx9/generic/setup_tx4938.c
@@ -24,6 +24,7 @@
#include <asm/txx9pio.h>
#include <asm/txx9/generic.h>
#include <asm/txx9/ndfmc.h>
+#include <asm/txx9/dmac.h>
#include <asm/txx9/tx4938.h>
static void __init tx4938_wdr_init(void)
@@ -239,11 +240,6 @@ void __init tx4938_setup(void)
for (i = 0; i < TX4938_NR_TMR; i++)
txx9_tmr_init(TX4938_TMR_REG(i) & 0xfffffffffULL);
- /* DMA */
- for (i = 0; i < 2; i++)
- ____raw_writeq(TX4938_DMA_MCR_MSTEN,
- (void __iomem *)(TX4938_DMA_REG(i) + 0x50));
-
/* PIO */
txx9_gpio_init(TX4938_PIO_REG & 0xfffffffffULL, 0, TX4938_NUM_PIO);
__raw_writel(0, &tx4938_pioptr->maskcpu);
@@ -403,6 +399,21 @@ void __init tx4938_ndfmc_init(unsigned int hold, unsigned int spw)
txx9_ndfmc_init(baseaddr, &plat_data);
}
+void __init tx4938_dmac_init(int memcpy_chan0, int memcpy_chan1)
+{
+ struct txx9dmac_platform_data plat_data = {
+ .have_64bit_regs = true,
+ };
+ int i;
+
+ for (i = 0; i < 2; i++) {
+ plat_data.memcpy_chan = i ? memcpy_chan1 : memcpy_chan0;
+ txx9_dmac_init(i, TX4938_DMA_REG(i) & 0xfffffffffULL,
+ TXX9_IRQ_BASE + TX4938_IR_DMA(i, 0),
+ &plat_data);
+ }
+}
+
static void __init tx4938_stop_unused_modules(void)
{
__u64 pcfg, rst = 0, ckd = 0;
diff --git a/arch/mips/txx9/generic/setup_tx4939.c b/arch/mips/txx9/generic/setup_tx4939.c
index c2bf150..98effef 100644
--- a/arch/mips/txx9/generic/setup_tx4939.c
+++ b/arch/mips/txx9/generic/setup_tx4939.c
@@ -28,6 +28,7 @@
#include <asm/txx9tmr.h>
#include <asm/txx9/generic.h>
#include <asm/txx9/ndfmc.h>
+#include <asm/txx9/dmac.h>
#include <asm/txx9/tx4939.h>
static void __init tx4939_wdr_init(void)
@@ -259,11 +260,6 @@ void __init tx4939_setup(void)
for (i = 0; i < TX4939_NR_TMR; i++)
txx9_tmr_init(TX4939_TMR_REG(i) & 0xfffffffffULL);
- /* DMA */
- for (i = 0; i < 2; i++)
- ____raw_writeq(TX4938_DMA_MCR_MSTEN,
- (void __iomem *)(TX4939_DMA_REG(i) + 0x50));
-
/* set PCIC1 reset (required to prevent hangup on BIST) */
txx9_set64(&tx4939_ccfgptr->clkctr, TX4939_CLKCTR_PCI1RST);
pcfg = ____raw_readq(&tx4939_ccfgptr->pcfg);
@@ -474,6 +470,21 @@ void __init tx4939_ndfmc_init(unsigned int hold, unsigned int spw,
txx9_ndfmc_init(TX4939_NDFMC_REG & 0xfffffffffULL, &plat_data);
}
+void __init tx4939_dmac_init(int memcpy_chan0, int memcpy_chan1)
+{
+ struct txx9dmac_platform_data plat_data = {
+ .have_64bit_regs = true,
+ };
+ int i;
+
+ for (i = 0; i < 2; i++) {
+ plat_data.memcpy_chan = i ? memcpy_chan1 : memcpy_chan0;
+ txx9_dmac_init(i, TX4939_DMA_REG(i) & 0xfffffffffULL,
+ TXX9_IRQ_BASE + TX4939_IR_DMA(i, 0),
+ &plat_data);
+ }
+}
+
static void __init tx4939_stop_unused_modules(void)
{
__u64 pcfg, rst = 0, ckd = 0;
diff --git a/arch/mips/txx9/rbtx4927/setup.c b/arch/mips/txx9/rbtx4927/setup.c
index 01129a9..332cdbc 100644
--- a/arch/mips/txx9/rbtx4927/setup.c
+++ b/arch/mips/txx9/rbtx4927/setup.c
@@ -337,6 +337,10 @@ static void __init rbtx4927_device_init(void)
rbtx4927_ne_init();
tx4927_wdt_init();
rbtx4927_mtd_init();
+ if (TX4927_REV_PCODE() == 0x4927)
+ tx4927_dmac_init(2);
+ else
+ tx4938_dmac_init(0, 2);
txx9_iocled_init(RBTX4927_LED_ADDR - IO_BASE, -1, 3, 1, "green", NULL);
rbtx4927_gpioled_init();
}
diff --git a/arch/mips/txx9/rbtx4938/setup.c b/arch/mips/txx9/rbtx4938/setup.c
index 65d13df..37c5e3d 100644
--- a/arch/mips/txx9/rbtx4938/setup.c
+++ b/arch/mips/txx9/rbtx4938/setup.c
@@ -355,6 +355,7 @@ static void __init rbtx4938_device_init(void)
/* TC58DVM82A1FT: tDH=10ns, tWP=tRP=tREADID=35ns */
tx4938_ndfmc_init(10, 35);
tx4938_ata_init(RBTX4938_IRQ_IOC_ATA, 0, 1);
+ tx4938_dmac_init(0, 2);
txx9_iocled_init(RBTX4938_LED_ADDR - IO_BASE, -1, 8, 1, "green", NULL);
}
diff --git a/arch/mips/txx9/rbtx4939/setup.c b/arch/mips/txx9/rbtx4939/setup.c
index 4199c6f..91f2ec8 100644
--- a/arch/mips/txx9/rbtx4939/setup.c
+++ b/arch/mips/txx9/rbtx4939/setup.c
@@ -498,6 +498,7 @@ static void __init rbtx4939_device_init(void)
tx4939_wdt_init();
tx4939_ata_init();
tx4939_rtc_init();
+ tx4939_dmac_init(0, 2);
}
static void __init rbtx4939_setup(void)
--
1.5.6.3
--
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