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authorArnd Bergmann <arnd@arndb.de>2022-05-09 23:12:49 +0200
committerArnd Bergmann <arnd@arndb.de>2022-05-09 23:12:50 +0200
commit6e6962ffe2ea8019877bc1db04b6105a4b3026bb (patch)
tree50315f8b93a8fd647c38475302cb7048fbcf0cc2 /drivers/memory
parent2b6866d70db1e2f19c7f8a4e90d9544957f734e6 (diff)
parent54a85e09f44c5fa322a2d186f50862d09f517225 (diff)
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Merge tag 'memory-controller-drv-tegra-5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux-mem-ctrl into arm/drivers
Memory controller drivers for v5.19 - Tegra SoC Add support for Tegra234 memory controller and for logging memory controller errors on Tegra186, Tegra194 and Tegra234. * tag 'memory-controller-drv-tegra-5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux-mem-ctrl: memory: tegra: Add MC error logging on Tegra186 onward memory: tegra: Add memory controller channels support memory: tegra: Add APE memory clients for Tegra234 memory: tegra: Add Tegra234 support Link: https://lore.kernel.org/r/20220509160807.154187-1-krzysztof.kozlowski@linaro.org Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'drivers/memory')
-rw-r--r--drivers/memory/tegra/Makefile2
-rw-r--r--drivers/memory/tegra/mc.c137
-rw-r--r--drivers/memory/tegra/mc.h50
-rw-r--r--drivers/memory/tegra/tegra186-emc.c3
-rw-r--r--drivers/memory/tegra/tegra186.c39
-rw-r--r--drivers/memory/tegra/tegra194.c9
-rw-r--r--drivers/memory/tegra/tegra234.c110
7 files changed, 332 insertions, 18 deletions
diff --git a/drivers/memory/tegra/Makefile b/drivers/memory/tegra/Makefile
index c992e87782d2..0750847dac3c 100644
--- a/drivers/memory/tegra/Makefile
+++ b/drivers/memory/tegra/Makefile
@@ -9,6 +9,7 @@ tegra-mc-$(CONFIG_ARCH_TEGRA_132_SOC) += tegra124.o
tegra-mc-$(CONFIG_ARCH_TEGRA_210_SOC) += tegra210.o
tegra-mc-$(CONFIG_ARCH_TEGRA_186_SOC) += tegra186.o
tegra-mc-$(CONFIG_ARCH_TEGRA_194_SOC) += tegra186.o tegra194.o
+tegra-mc-$(CONFIG_ARCH_TEGRA_234_SOC) += tegra186.o tegra234.o
obj-$(CONFIG_TEGRA_MC) += tegra-mc.o
@@ -19,5 +20,6 @@ obj-$(CONFIG_TEGRA210_EMC_TABLE) += tegra210-emc-table.o
obj-$(CONFIG_TEGRA210_EMC) += tegra210-emc.o
obj-$(CONFIG_ARCH_TEGRA_186_SOC) += tegra186-emc.o
obj-$(CONFIG_ARCH_TEGRA_194_SOC) += tegra186-emc.o
+obj-$(CONFIG_ARCH_TEGRA_234_SOC) += tegra186-emc.o
tegra210-emc-y := tegra210-emc-core.o tegra210-emc-cc-r21021.o
diff --git a/drivers/memory/tegra/mc.c b/drivers/memory/tegra/mc.c
index 6d22d1ee432a..2f7a58a9df1a 100644
--- a/drivers/memory/tegra/mc.c
+++ b/drivers/memory/tegra/mc.c
@@ -45,6 +45,9 @@ static const struct of_device_id tegra_mc_of_match[] = {
#ifdef CONFIG_ARCH_TEGRA_194_SOC
{ .compatible = "nvidia,tegra194-mc", .data = &tegra194_mc_soc },
#endif
+#ifdef CONFIG_ARCH_TEGRA_234_SOC
+ { .compatible = "nvidia,tegra234-mc", .data = &tegra234_mc_soc },
+#endif
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, tegra_mc_of_match);
@@ -505,14 +508,54 @@ int tegra30_mc_probe(struct tegra_mc *mc)
return 0;
}
-static irqreturn_t tegra30_mc_handle_irq(int irq, void *data)
+const struct tegra_mc_ops tegra30_mc_ops = {
+ .probe = tegra30_mc_probe,
+ .handle_irq = tegra30_mc_handle_irq,
+};
+#endif
+
+static int mc_global_intstatus_to_channel(const struct tegra_mc *mc, u32 status,
+ unsigned int *mc_channel)
+{
+ if ((status & mc->soc->ch_intmask) == 0)
+ return -EINVAL;
+
+ *mc_channel = __ffs((status & mc->soc->ch_intmask) >>
+ mc->soc->global_intstatus_channel_shift);
+
+ return 0;
+}
+
+static u32 mc_channel_to_global_intstatus(const struct tegra_mc *mc,
+ unsigned int channel)
+{
+ return BIT(channel) << mc->soc->global_intstatus_channel_shift;
+}
+
+irqreturn_t tegra30_mc_handle_irq(int irq, void *data)
{
struct tegra_mc *mc = data;
+ unsigned int bit, channel;
unsigned long status;
- unsigned int bit;
- /* mask all interrupts to avoid flooding */
- status = mc_readl(mc, MC_INTSTATUS) & mc->soc->intmask;
+ if (mc->soc->num_channels) {
+ u32 global_status;
+ int err;
+
+ global_status = mc_ch_readl(mc, MC_BROADCAST_CHANNEL, MC_GLOBAL_INTSTATUS);
+ err = mc_global_intstatus_to_channel(mc, global_status, &channel);
+ if (err < 0) {
+ dev_err_ratelimited(mc->dev, "unknown interrupt channel 0x%08x\n",
+ global_status);
+ return IRQ_NONE;
+ }
+
+ /* mask all interrupts to avoid flooding */
+ status = mc_ch_readl(mc, channel, MC_INTSTATUS) & mc->soc->intmask;
+ } else {
+ status = mc_readl(mc, MC_INTSTATUS) & mc->soc->intmask;
+ }
+
if (!status)
return IRQ_NONE;
@@ -520,18 +563,70 @@ static irqreturn_t tegra30_mc_handle_irq(int irq, void *data)
const char *error = tegra_mc_status_names[bit] ?: "unknown";
const char *client = "unknown", *desc;
const char *direction, *secure;
+ u32 status_reg, addr_reg;
+ u32 intmask = BIT(bit);
phys_addr_t addr = 0;
+#ifdef CONFIG_PHYS_ADDR_T_64BIT
+ u32 addr_hi_reg = 0;
+#endif
unsigned int i;
char perm[7];
u8 id, type;
u32 value;
- value = mc_readl(mc, MC_ERR_STATUS);
+ switch (intmask) {
+ case MC_INT_DECERR_VPR:
+ status_reg = MC_ERR_VPR_STATUS;
+ addr_reg = MC_ERR_VPR_ADR;
+ break;
+
+ case MC_INT_SECERR_SEC:
+ status_reg = MC_ERR_SEC_STATUS;
+ addr_reg = MC_ERR_SEC_ADR;
+ break;
+
+ case MC_INT_DECERR_MTS:
+ status_reg = MC_ERR_MTS_STATUS;
+ addr_reg = MC_ERR_MTS_ADR;
+ break;
+
+ case MC_INT_DECERR_GENERALIZED_CARVEOUT:
+ status_reg = MC_ERR_GENERALIZED_CARVEOUT_STATUS;
+ addr_reg = MC_ERR_GENERALIZED_CARVEOUT_ADR;
+ break;
+
+ case MC_INT_DECERR_ROUTE_SANITY:
+ status_reg = MC_ERR_ROUTE_SANITY_STATUS;
+ addr_reg = MC_ERR_ROUTE_SANITY_ADR;
+ break;
+
+ default:
+ status_reg = MC_ERR_STATUS;
+ addr_reg = MC_ERR_ADR;
+
+#ifdef CONFIG_PHYS_ADDR_T_64BIT
+ if (mc->soc->has_addr_hi_reg)
+ addr_hi_reg = MC_ERR_ADR_HI;
+#endif
+ break;
+ }
+
+ if (mc->soc->num_channels)
+ value = mc_ch_readl(mc, channel, status_reg);
+ else
+ value = mc_readl(mc, status_reg);
#ifdef CONFIG_PHYS_ADDR_T_64BIT
if (mc->soc->num_address_bits > 32) {
- addr = ((value >> MC_ERR_STATUS_ADR_HI_SHIFT) &
- MC_ERR_STATUS_ADR_HI_MASK);
+ if (addr_hi_reg) {
+ if (mc->soc->num_channels)
+ addr = mc_ch_readl(mc, channel, addr_hi_reg);
+ else
+ addr = mc_readl(mc, addr_hi_reg);
+ } else {
+ addr = ((value >> MC_ERR_STATUS_ADR_HI_SHIFT) &
+ MC_ERR_STATUS_ADR_HI_MASK);
+ }
addr <<= 32;
}
#endif
@@ -588,7 +683,10 @@ static irqreturn_t tegra30_mc_handle_irq(int irq, void *data)
break;
}
- value = mc_readl(mc, MC_ERR_ADR);
+ if (mc->soc->num_channels)
+ value = mc_ch_readl(mc, channel, addr_reg);
+ else
+ value = mc_readl(mc, addr_reg);
addr |= value;
dev_err_ratelimited(mc->dev, "%s: %s%s @%pa: %s (%s%s)\n",
@@ -597,17 +695,18 @@ static irqreturn_t tegra30_mc_handle_irq(int irq, void *data)
}
/* clear interrupts */
- mc_writel(mc, status, MC_INTSTATUS);
+ if (mc->soc->num_channels) {
+ mc_ch_writel(mc, channel, status, MC_INTSTATUS);
+ mc_ch_writel(mc, MC_BROADCAST_CHANNEL,
+ mc_channel_to_global_intstatus(mc, channel),
+ MC_GLOBAL_INTSTATUS);
+ } else {
+ mc_writel(mc, status, MC_INTSTATUS);
+ }
return IRQ_HANDLED;
}
-const struct tegra_mc_ops tegra30_mc_ops = {
- .probe = tegra30_mc_probe,
- .handle_irq = tegra30_mc_handle_irq,
-};
-#endif
-
const char *const tegra_mc_status_names[32] = {
[ 1] = "External interrupt",
[ 6] = "EMEM address decode error",
@@ -619,6 +718,8 @@ const char *const tegra_mc_status_names[32] = {
[12] = "VPR violation",
[13] = "Secure carveout violation",
[16] = "MTS carveout violation",
+ [17] = "Generalized carveout violation",
+ [20] = "Route Sanity error",
};
const char *const tegra_mc_error_names[8] = {
@@ -759,7 +860,11 @@ static int tegra_mc_probe(struct platform_device *pdev)
WARN(!mc->soc->client_id_mask, "missing client ID mask for this SoC\n");
- mc_writel(mc, mc->soc->intmask, MC_INTMASK);
+ if (mc->soc->num_channels)
+ mc_ch_writel(mc, MC_BROADCAST_CHANNEL, mc->soc->intmask,
+ MC_INTMASK);
+ else
+ mc_writel(mc, mc->soc->intmask, MC_INTMASK);
err = devm_request_irq(&pdev->dev, mc->irq, mc->soc->ops->handle_irq, 0,
dev_name(&pdev->dev), mc);
diff --git a/drivers/memory/tegra/mc.h b/drivers/memory/tegra/mc.h
index 1e492989c363..bc01586b6560 100644
--- a/drivers/memory/tegra/mc.h
+++ b/drivers/memory/tegra/mc.h
@@ -43,7 +43,21 @@
#define MC_EMEM_ARB_OVERRIDE 0xe8
#define MC_TIMING_CONTROL_DBG 0xf8
#define MC_TIMING_CONTROL 0xfc
-
+#define MC_ERR_VPR_STATUS 0x654
+#define MC_ERR_VPR_ADR 0x658
+#define MC_ERR_SEC_STATUS 0x67c
+#define MC_ERR_SEC_ADR 0x680
+#define MC_ERR_MTS_STATUS 0x9b0
+#define MC_ERR_MTS_ADR 0x9b4
+#define MC_ERR_ROUTE_SANITY_STATUS 0x9c0
+#define MC_ERR_ROUTE_SANITY_ADR 0x9c4
+#define MC_ERR_GENERALIZED_CARVEOUT_STATUS 0xc00
+#define MC_ERR_GENERALIZED_CARVEOUT_ADR 0xc04
+#define MC_GLOBAL_INTSTATUS 0xf24
+#define MC_ERR_ADR_HI 0x11fc
+
+#define MC_INT_DECERR_ROUTE_SANITY BIT(20)
+#define MC_INT_DECERR_GENERALIZED_CARVEOUT BIT(17)
#define MC_INT_DECERR_MTS BIT(16)
#define MC_INT_SECERR_SEC BIT(13)
#define MC_INT_DECERR_VPR BIT(12)
@@ -78,6 +92,8 @@
#define MC_TIMING_UPDATE BIT(0)
+#define MC_BROADCAST_CHANNEL ~0
+
static inline u32 tegra_mc_scale_percents(u64 val, unsigned int percents)
{
val = val * percents;
@@ -92,6 +108,30 @@ icc_provider_to_tegra_mc(struct icc_provider *provider)
return container_of(provider, struct tegra_mc, provider);
}
+static inline u32 mc_ch_readl(const struct tegra_mc *mc, int ch,
+ unsigned long offset)
+{
+ if (!mc->bcast_ch_regs)
+ return 0;
+
+ if (ch == MC_BROADCAST_CHANNEL)
+ return readl_relaxed(mc->bcast_ch_regs + offset);
+
+ return readl_relaxed(mc->ch_regs[ch] + offset);
+}
+
+static inline void mc_ch_writel(const struct tegra_mc *mc, int ch,
+ u32 value, unsigned long offset)
+{
+ if (!mc->bcast_ch_regs)
+ return;
+
+ if (ch == MC_BROADCAST_CHANNEL)
+ writel_relaxed(value, mc->bcast_ch_regs + offset);
+ else
+ writel_relaxed(value, mc->ch_regs[ch] + offset);
+}
+
static inline u32 mc_readl(const struct tegra_mc *mc, unsigned long offset)
{
return readl_relaxed(mc->regs + offset);
@@ -137,6 +177,10 @@ extern const struct tegra_mc_soc tegra186_mc_soc;
extern const struct tegra_mc_soc tegra194_mc_soc;
#endif
+#ifdef CONFIG_ARCH_TEGRA_234_SOC
+extern const struct tegra_mc_soc tegra234_mc_soc;
+#endif
+
#if defined(CONFIG_ARCH_TEGRA_3x_SOC) || \
defined(CONFIG_ARCH_TEGRA_114_SOC) || \
defined(CONFIG_ARCH_TEGRA_124_SOC) || \
@@ -147,10 +191,12 @@ extern const struct tegra_mc_ops tegra30_mc_ops;
#endif
#if defined(CONFIG_ARCH_TEGRA_186_SOC) || \
- defined(CONFIG_ARCH_TEGRA_194_SOC)
+ defined(CONFIG_ARCH_TEGRA_194_SOC) || \
+ defined(CONFIG_ARCH_TEGRA_234_SOC)
extern const struct tegra_mc_ops tegra186_mc_ops;
#endif
+irqreturn_t tegra30_mc_handle_irq(int irq, void *data);
extern const char * const tegra_mc_status_names[32];
extern const char * const tegra_mc_error_names[8];
diff --git a/drivers/memory/tegra/tegra186-emc.c b/drivers/memory/tegra/tegra186-emc.c
index 746c4ef2c0af..54b47ca33483 100644
--- a/drivers/memory/tegra/tegra186-emc.c
+++ b/drivers/memory/tegra/tegra186-emc.c
@@ -273,6 +273,9 @@ static const struct of_device_id tegra186_emc_of_match[] = {
#if defined(CONFIG_ARCH_TEGRA_194_SOC)
{ .compatible = "nvidia,tegra194-emc" },
#endif
+#if defined(CONFIG_ARCH_TEGRA_234_SOC)
+ { .compatible = "nvidia,tegra234-emc" },
+#endif
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, tegra186_emc_of_match);
diff --git a/drivers/memory/tegra/tegra186.c b/drivers/memory/tegra/tegra186.c
index 3d153881abc1..62477e592bf5 100644
--- a/drivers/memory/tegra/tegra186.c
+++ b/drivers/memory/tegra/tegra186.c
@@ -16,6 +16,8 @@
#include <dt-bindings/memory/tegra186-mc.h>
#endif
+#include "mc.h"
+
#define MC_SID_STREAMID_OVERRIDE_MASK GENMASK(7, 0)
#define MC_SID_STREAMID_SECURITY_WRITE_ACCESS_DISABLED BIT(16)
#define MC_SID_STREAMID_SECURITY_OVERRIDE BIT(8)
@@ -48,8 +50,37 @@ static void tegra186_mc_program_sid(struct tegra_mc *mc)
static int tegra186_mc_probe(struct tegra_mc *mc)
{
+ struct platform_device *pdev = to_platform_device(mc->dev);
+ unsigned int i;
+ char name[8];
int err;
+ mc->bcast_ch_regs = devm_platform_ioremap_resource_byname(pdev, "broadcast");
+ if (IS_ERR(mc->bcast_ch_regs)) {
+ if (PTR_ERR(mc->bcast_ch_regs) == -EINVAL) {
+ dev_warn(&pdev->dev,
+ "Broadcast channel is missing, please update your device-tree\n");
+ mc->bcast_ch_regs = NULL;
+ goto populate;
+ }
+
+ return PTR_ERR(mc->bcast_ch_regs);
+ }
+
+ mc->ch_regs = devm_kcalloc(mc->dev, mc->soc->num_channels, sizeof(*mc->ch_regs),
+ GFP_KERNEL);
+ if (!mc->ch_regs)
+ return -ENOMEM;
+
+ for (i = 0; i < mc->soc->num_channels; i++) {
+ snprintf(name, sizeof(name), "ch%u", i);
+
+ mc->ch_regs[i] = devm_platform_ioremap_resource_byname(pdev, name);
+ if (IS_ERR(mc->ch_regs[i]))
+ return PTR_ERR(mc->ch_regs[i]);
+ }
+
+populate:
err = of_platform_populate(mc->dev->of_node, NULL, NULL, mc->dev);
if (err < 0)
return err;
@@ -144,6 +175,7 @@ const struct tegra_mc_ops tegra186_mc_ops = {
.remove = tegra186_mc_remove,
.resume = tegra186_mc_resume,
.probe_device = tegra186_mc_probe_device,
+ .handle_irq = tegra30_mc_handle_irq,
};
#if defined(CONFIG_ARCH_TEGRA_186_SOC)
@@ -875,6 +907,13 @@ const struct tegra_mc_soc tegra186_mc_soc = {
.num_clients = ARRAY_SIZE(tegra186_mc_clients),
.clients = tegra186_mc_clients,
.num_address_bits = 40,
+ .num_channels = 4,
+ .client_id_mask = 0xff,
+ .intmask = MC_INT_DECERR_GENERALIZED_CARVEOUT | MC_INT_DECERR_MTS |
+ MC_INT_SECERR_SEC | MC_INT_DECERR_VPR |
+ MC_INT_SECURITY_VIOLATION | MC_INT_DECERR_EMEM,
.ops = &tegra186_mc_ops,
+ .ch_intmask = 0x0000000f,
+ .global_intstatus_channel_shift = 0,
};
#endif
diff --git a/drivers/memory/tegra/tegra194.c b/drivers/memory/tegra/tegra194.c
index cab998b8bd5c..b2416ee3ac26 100644
--- a/drivers/memory/tegra/tegra194.c
+++ b/drivers/memory/tegra/tegra194.c
@@ -1347,5 +1347,14 @@ const struct tegra_mc_soc tegra194_mc_soc = {
.num_clients = ARRAY_SIZE(tegra194_mc_clients),
.clients = tegra194_mc_clients,
.num_address_bits = 40,
+ .num_channels = 16,
+ .client_id_mask = 0xff,
+ .intmask = MC_INT_DECERR_ROUTE_SANITY |
+ MC_INT_DECERR_GENERALIZED_CARVEOUT | MC_INT_DECERR_MTS |
+ MC_INT_SECERR_SEC | MC_INT_DECERR_VPR |
+ MC_INT_SECURITY_VIOLATION | MC_INT_DECERR_EMEM,
+ .has_addr_hi_reg = true,
.ops = &tegra186_mc_ops,
+ .ch_intmask = 0x00000f00,
+ .global_intstatus_channel_shift = 8,
};
diff --git a/drivers/memory/tegra/tegra234.c b/drivers/memory/tegra/tegra234.c
new file mode 100644
index 000000000000..e23ebd421f17
--- /dev/null
+++ b/drivers/memory/tegra/tegra234.c
@@ -0,0 +1,110 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2021-2022, NVIDIA CORPORATION. All rights reserved.
+ */
+
+#include <soc/tegra/mc.h>
+
+#include <dt-bindings/memory/tegra234-mc.h>
+
+#include "mc.h"
+
+static const struct tegra_mc_client tegra234_mc_clients[] = {
+ {
+ .id = TEGRA234_MEMORY_CLIENT_SDMMCRAB,
+ .name = "sdmmcrab",
+ .sid = TEGRA234_SID_SDMMC4,
+ .regs = {
+ .sid = {
+ .override = 0x318,
+ .security = 0x31c,
+ },
+ },
+ }, {
+ .id = TEGRA234_MEMORY_CLIENT_SDMMCWAB,
+ .name = "sdmmcwab",
+ .sid = TEGRA234_SID_SDMMC4,
+ .regs = {
+ .sid = {
+ .override = 0x338,
+ .security = 0x33c,
+ },
+ },
+ }, {
+ .id = TEGRA234_MEMORY_CLIENT_BPMPR,
+ .name = "bpmpr",
+ .sid = TEGRA234_SID_BPMP,
+ .regs = {
+ .sid = {
+ .override = 0x498,
+ .security = 0x49c,
+ },
+ },
+ }, {
+ .id = TEGRA234_MEMORY_CLIENT_BPMPW,
+ .name = "bpmpw",
+ .sid = TEGRA234_SID_BPMP,
+ .regs = {
+ .sid = {
+ .override = 0x4a0,
+ .security = 0x4a4,
+ },
+ },
+ }, {
+ .id = TEGRA234_MEMORY_CLIENT_BPMPDMAR,
+ .name = "bpmpdmar",
+ .sid = TEGRA234_SID_BPMP,
+ .regs = {
+ .sid = {
+ .override = 0x4a8,
+ .security = 0x4ac,
+ },
+ },
+ }, {
+ .id = TEGRA234_MEMORY_CLIENT_BPMPDMAW,
+ .name = "bpmpdmaw",
+ .sid = TEGRA234_SID_BPMP,
+ .regs = {
+ .sid = {
+ .override = 0x4b0,
+ .security = 0x4b4,
+ },
+ },
+ }, {
+ .id = TEGRA234_MEMORY_CLIENT_APEDMAR,
+ .name = "apedmar",
+ .sid = TEGRA234_SID_APE,
+ .regs = {
+ .sid = {
+ .override = 0x4f8,
+ .security = 0x4fc,
+ },
+ },
+ }, {
+ .id = TEGRA234_MEMORY_CLIENT_APEDMAW,
+ .name = "apedmaw",
+ .sid = TEGRA234_SID_APE,
+ .regs = {
+ .sid = {
+ .override = 0x500,
+ .security = 0x504,
+ },
+ },
+ },
+};
+
+const struct tegra_mc_soc tegra234_mc_soc = {
+ .num_clients = ARRAY_SIZE(tegra234_mc_clients),
+ .clients = tegra234_mc_clients,
+ .num_address_bits = 40,
+ .num_channels = 16,
+ .client_id_mask = 0x1ff,
+ .intmask = MC_INT_DECERR_ROUTE_SANITY |
+ MC_INT_DECERR_GENERALIZED_CARVEOUT | MC_INT_DECERR_MTS |
+ MC_INT_SECERR_SEC | MC_INT_DECERR_VPR |
+ MC_INT_SECURITY_VIOLATION | MC_INT_DECERR_EMEM,
+ .has_addr_hi_reg = true,
+ .ops = &tegra186_mc_ops,
+ .ch_intmask = 0x0000ff00,
+ .global_intstatus_channel_shift = 8,
+};