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-rw-r--r--drivers/dma/Kconfig12
-rw-r--r--drivers/dma/Makefile1
-rw-r--r--drivers/dma/cv1800b-dmamux.c259
-rw-r--r--drivers/dma/dw-edma/dw-edma-core.c12
-rw-r--r--drivers/dma/fsl-dpaa2-qdma/dpdmai.c5
-rw-r--r--drivers/dma/fsl-qdma.c3
-rw-r--r--drivers/dma/idxd/init.c1
-rw-r--r--drivers/dma/idxd/registers.h60
-rw-r--r--drivers/dma/mmp_tdma.c2
-rw-r--r--drivers/dma/mv_xor.c21
-rw-r--r--drivers/dma/nbpfaxi.c13
-rw-r--r--drivers/dma/qcom/gpi.c11
-rw-r--r--drivers/dma/sh/Kconfig2
-rw-r--r--drivers/dma/stm32/stm32-dma.c12
-rw-r--r--drivers/dma/stm32/stm32-dma3.c10
-rw-r--r--drivers/dma/stm32/stm32-mdma.c8
-rw-r--r--drivers/dma/sun4i-dma.c46
-rw-r--r--drivers/dma/ti/Kconfig4
18 files changed, 367 insertions, 115 deletions
diff --git a/drivers/dma/Kconfig b/drivers/dma/Kconfig
index db87dd2a07f7..05c7c7d9e5a4 100644
--- a/drivers/dma/Kconfig
+++ b/drivers/dma/Kconfig
@@ -89,7 +89,6 @@ config APPLE_ADMAC
tristate "Apple ADMAC support"
depends on ARCH_APPLE || COMPILE_TEST
select DMA_ENGINE
- default ARCH_APPLE
help
Enable support for Audio DMA Controller found on Apple Silicon SoCs.
@@ -111,7 +110,7 @@ config AT_HDMAC
config AT_XDMAC
tristate "Atmel XDMA support"
- depends on ARCH_AT91
+ depends on ARCH_MICROCHIP
select DMA_ENGINE
help
Support the Atmel XDMA controller.
@@ -572,6 +571,15 @@ config PLX_DMA
These are exposed via extra functions on the switch's
upstream port. Each function exposes one DMA channel.
+config SOPHGO_CV1800B_DMAMUX
+ tristate "Sophgo CV1800/SG2000 series SoC DMA multiplexer support"
+ depends on MFD_SYSCON
+ depends on ARCH_SOPHGO || COMPILE_TEST
+ help
+ Support for the DMA multiplexer on Sophgo CV1800/SG2000
+ series SoCs.
+ Say Y here if your board have this soc.
+
config STE_DMA40
bool "ST-Ericsson DMA40 support"
depends on ARCH_U8500
diff --git a/drivers/dma/Makefile b/drivers/dma/Makefile
index ba9732644752..a54d7688392b 100644
--- a/drivers/dma/Makefile
+++ b/drivers/dma/Makefile
@@ -71,6 +71,7 @@ obj-$(CONFIG_PPC_BESTCOMM) += bestcomm/
obj-$(CONFIG_PXA_DMA) += pxa_dma.o
obj-$(CONFIG_RENESAS_DMA) += sh/
obj-$(CONFIG_SF_PDMA) += sf-pdma/
+obj-$(CONFIG_SOPHGO_CV1800B_DMAMUX) += cv1800b-dmamux.o
obj-$(CONFIG_STE_DMA40) += ste_dma40.o ste_dma40_ll.o
obj-$(CONFIG_SPRD_DMA) += sprd-dma.o
obj-$(CONFIG_TXX9_DMAC) += txx9dmac.o
diff --git a/drivers/dma/cv1800b-dmamux.c b/drivers/dma/cv1800b-dmamux.c
new file mode 100644
index 000000000000..e900d6595617
--- /dev/null
+++ b/drivers/dma/cv1800b-dmamux.c
@@ -0,0 +1,259 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2025 Inochi Amaoto <inochiama@gmail.com>
+ */
+
+#include <linux/bitops.h>
+#include <linux/cleanup.h>
+#include <linux/module.h>
+#include <linux/of_dma.h>
+#include <linux/of_address.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/llist.h>
+#include <linux/regmap.h>
+#include <linux/spinlock.h>
+#include <linux/mfd/syscon.h>
+
+#define REG_DMA_CHANNEL_REMAP0 0x154
+#define REG_DMA_CHANNEL_REMAP1 0x158
+#define REG_DMA_INT_MUX 0x298
+
+#define DMAMUX_NCELLS 2
+#define MAX_DMA_MAPPING_ID 42
+#define MAX_DMA_CPU_ID 2
+#define MAX_DMA_CH_ID 7
+
+#define DMAMUX_INTMUX_REGISTER_LEN 4
+#define DMAMUX_NR_CH_PER_REGISTER 4
+#define DMAMUX_BIT_PER_CH 8
+#define DMAMUX_CH_MASk GENMASK(5, 0)
+#define DMAMUX_INT_BIT_PER_CPU 10
+#define DMAMUX_CH_UPDATE_BIT BIT(31)
+
+#define DMAMUX_CH_REGPOS(chid) \
+ ((chid) / DMAMUX_NR_CH_PER_REGISTER)
+#define DMAMUX_CH_REGOFF(chid) \
+ ((chid) % DMAMUX_NR_CH_PER_REGISTER)
+#define DMAMUX_CH_REG(chid) \
+ ((DMAMUX_CH_REGPOS(chid) * sizeof(u32)) + \
+ REG_DMA_CHANNEL_REMAP0)
+#define DMAMUX_CH_SET(chid, val) \
+ (((val) << (DMAMUX_CH_REGOFF(chid) * DMAMUX_BIT_PER_CH)) | \
+ DMAMUX_CH_UPDATE_BIT)
+#define DMAMUX_CH_MASK(chid) \
+ DMAMUX_CH_SET(chid, DMAMUX_CH_MASk)
+
+#define DMAMUX_INT_BIT(chid, cpuid) \
+ BIT((cpuid) * DMAMUX_INT_BIT_PER_CPU + (chid))
+#define DMAMUX_INTEN_BIT(cpuid) \
+ DMAMUX_INT_BIT(8, cpuid)
+#define DMAMUX_INT_CH_BIT(chid, cpuid) \
+ (DMAMUX_INT_BIT(chid, cpuid) | DMAMUX_INTEN_BIT(cpuid))
+#define DMAMUX_INT_MASK(chid) \
+ (DMAMUX_INT_BIT(chid, 0) | \
+ DMAMUX_INT_BIT(chid, 1) | \
+ DMAMUX_INT_BIT(chid, 2))
+#define DMAMUX_INT_CH_MASK(chid, cpuid) \
+ (DMAMUX_INT_MASK(chid) | DMAMUX_INTEN_BIT(cpuid))
+
+struct cv1800_dmamux_data {
+ struct dma_router dmarouter;
+ struct regmap *regmap;
+ spinlock_t lock;
+ struct llist_head free_maps;
+ struct llist_head reserve_maps;
+ DECLARE_BITMAP(mapped_peripherals, MAX_DMA_MAPPING_ID);
+};
+
+struct cv1800_dmamux_map {
+ struct llist_node node;
+ unsigned int channel;
+ unsigned int peripheral;
+ unsigned int cpu;
+};
+
+static void cv1800_dmamux_free(struct device *dev, void *route_data)
+{
+ struct cv1800_dmamux_data *dmamux = dev_get_drvdata(dev);
+ struct cv1800_dmamux_map *map = route_data;
+
+ guard(spinlock_irqsave)(&dmamux->lock);
+
+ regmap_update_bits(dmamux->regmap,
+ DMAMUX_CH_REG(map->channel),
+ DMAMUX_CH_MASK(map->channel),
+ DMAMUX_CH_UPDATE_BIT);
+
+ regmap_update_bits(dmamux->regmap, REG_DMA_INT_MUX,
+ DMAMUX_INT_CH_MASK(map->channel, map->cpu),
+ DMAMUX_INTEN_BIT(map->cpu));
+
+ dev_dbg(dev, "free channel %u for req %u (cpu %u)\n",
+ map->channel, map->peripheral, map->cpu);
+}
+
+static void *cv1800_dmamux_route_allocate(struct of_phandle_args *dma_spec,
+ struct of_dma *ofdma)
+{
+ struct platform_device *pdev = of_find_device_by_node(ofdma->of_node);
+ struct cv1800_dmamux_data *dmamux = platform_get_drvdata(pdev);
+ struct cv1800_dmamux_map *map;
+ struct llist_node *node;
+ unsigned long flags;
+ unsigned int chid, devid, cpuid;
+ int ret;
+
+ if (dma_spec->args_count != DMAMUX_NCELLS) {
+ dev_err(&pdev->dev, "invalid number of dma mux args\n");
+ return ERR_PTR(-EINVAL);
+ }
+
+ devid = dma_spec->args[0];
+ cpuid = dma_spec->args[1];
+ dma_spec->args_count = 1;
+
+ if (devid > MAX_DMA_MAPPING_ID) {
+ dev_err(&pdev->dev, "invalid device id: %u\n", devid);
+ return ERR_PTR(-EINVAL);
+ }
+
+ if (cpuid > MAX_DMA_CPU_ID) {
+ dev_err(&pdev->dev, "invalid cpu id: %u\n", cpuid);
+ return ERR_PTR(-EINVAL);
+ }
+
+ dma_spec->np = of_parse_phandle(ofdma->of_node, "dma-masters", 0);
+ if (!dma_spec->np) {
+ dev_err(&pdev->dev, "can't get dma master\n");
+ return ERR_PTR(-EINVAL);
+ }
+
+ spin_lock_irqsave(&dmamux->lock, flags);
+
+ if (test_bit(devid, dmamux->mapped_peripherals)) {
+ llist_for_each_entry(map, dmamux->reserve_maps.first, node) {
+ if (map->peripheral == devid && map->cpu == cpuid)
+ goto found;
+ }
+
+ ret = -EINVAL;
+ goto failed;
+ } else {
+ node = llist_del_first(&dmamux->free_maps);
+ if (!node) {
+ ret = -ENODEV;
+ goto failed;
+ }
+
+ map = llist_entry(node, struct cv1800_dmamux_map, node);
+ llist_add(&map->node, &dmamux->reserve_maps);
+ set_bit(devid, dmamux->mapped_peripherals);
+ }
+
+found:
+ chid = map->channel;
+ map->peripheral = devid;
+ map->cpu = cpuid;
+
+ regmap_set_bits(dmamux->regmap,
+ DMAMUX_CH_REG(chid),
+ DMAMUX_CH_SET(chid, devid));
+
+ regmap_update_bits(dmamux->regmap, REG_DMA_INT_MUX,
+ DMAMUX_INT_CH_MASK(chid, cpuid),
+ DMAMUX_INT_CH_BIT(chid, cpuid));
+
+ spin_unlock_irqrestore(&dmamux->lock, flags);
+
+ dma_spec->args[0] = chid;
+
+ dev_dbg(&pdev->dev, "register channel %u for req %u (cpu %u)\n",
+ chid, devid, cpuid);
+
+ return map;
+
+failed:
+ spin_unlock_irqrestore(&dmamux->lock, flags);
+ of_node_put(dma_spec->np);
+ dev_err(&pdev->dev, "errno %d\n", ret);
+ return ERR_PTR(ret);
+}
+
+static int cv1800_dmamux_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct device_node *mux_node = dev->of_node;
+ struct cv1800_dmamux_data *data;
+ struct cv1800_dmamux_map *tmp;
+ struct device *parent = dev->parent;
+ struct regmap *regmap = NULL;
+ unsigned int i;
+
+ if (!parent)
+ return -ENODEV;
+
+ regmap = device_node_to_regmap(parent->of_node);
+ if (IS_ERR(regmap))
+ return PTR_ERR(regmap);
+
+ data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ spin_lock_init(&data->lock);
+ init_llist_head(&data->free_maps);
+ init_llist_head(&data->reserve_maps);
+
+ for (i = 0; i <= MAX_DMA_CH_ID; i++) {
+ tmp = devm_kmalloc(dev, sizeof(*tmp), GFP_KERNEL);
+ if (!tmp) {
+ /* It is OK for not allocating all channel */
+ dev_warn(dev, "can not allocate channel %u\n", i);
+ continue;
+ }
+
+ init_llist_node(&tmp->node);
+ tmp->channel = i;
+ llist_add(&tmp->node, &data->free_maps);
+ }
+
+ /* if no channel is allocated, the probe must fail */
+ if (llist_empty(&data->free_maps))
+ return -ENOMEM;
+
+ data->regmap = regmap;
+ data->dmarouter.dev = dev;
+ data->dmarouter.route_free = cv1800_dmamux_free;
+
+ platform_set_drvdata(pdev, data);
+
+ return of_dma_router_register(mux_node,
+ cv1800_dmamux_route_allocate,
+ &data->dmarouter);
+}
+
+static void cv1800_dmamux_remove(struct platform_device *pdev)
+{
+ of_dma_controller_free(pdev->dev.of_node);
+}
+
+static const struct of_device_id cv1800_dmamux_ids[] = {
+ { .compatible = "sophgo,cv1800b-dmamux", },
+ { }
+};
+MODULE_DEVICE_TABLE(of, cv1800_dmamux_ids);
+
+static struct platform_driver cv1800_dmamux_driver = {
+ .probe = cv1800_dmamux_probe,
+ .remove = cv1800_dmamux_remove,
+ .driver = {
+ .name = "cv1800-dmamux",
+ .of_match_table = cv1800_dmamux_ids,
+ },
+};
+module_platform_driver(cv1800_dmamux_driver);
+
+MODULE_AUTHOR("Inochi Amaoto <inochiama@gmail.com>");
+MODULE_DESCRIPTION("Sophgo CV1800/SG2000 Series SoC DMAMUX driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/dma/dw-edma/dw-edma-core.c b/drivers/dma/dw-edma/dw-edma-core.c
index c2b88cc99e5d..b43255f914f3 100644
--- a/drivers/dma/dw-edma/dw-edma-core.c
+++ b/drivers/dma/dw-edma/dw-edma-core.c
@@ -24,18 +24,6 @@
#include "../virt-dma.h"
static inline
-struct device *dchan2dev(struct dma_chan *dchan)
-{
- return &dchan->dev->device;
-}
-
-static inline
-struct device *chan2dev(struct dw_edma_chan *chan)
-{
- return &chan->vc.chan.dev->device;
-}
-
-static inline
struct dw_edma_desc *vd2dw_edma_desc(struct virt_dma_desc *vd)
{
return container_of(vd, struct dw_edma_desc, vd);
diff --git a/drivers/dma/fsl-dpaa2-qdma/dpdmai.c b/drivers/dma/fsl-dpaa2-qdma/dpdmai.c
index b4323d243d6d..4be81db24a19 100644
--- a/drivers/dma/fsl-dpaa2-qdma/dpdmai.c
+++ b/drivers/dma/fsl-dpaa2-qdma/dpdmai.c
@@ -48,11 +48,6 @@ struct dpdmai_cmd_destroy {
__le32 dpdmai_id;
} __packed;
-static inline u64 mc_enc(int lsoffset, int width, u64 val)
-{
- return (val & MAKE_UMASK64(width)) << lsoffset;
-}
-
/**
* dpdmai_open() - Open a control session for the specified object
* @mc_io: Pointer to MC portal's I/O object
diff --git a/drivers/dma/fsl-qdma.c b/drivers/dma/fsl-qdma.c
index 823f5c6bc2e1..21e13f1207cb 100644
--- a/drivers/dma/fsl-qdma.c
+++ b/drivers/dma/fsl-qdma.c
@@ -148,6 +148,9 @@
* @__reserved1: Reserved field.
* @cfg8b_w1: Compound descriptor command queue origin produced
* by qDMA and dynamic debug field.
+ * @__reserved2: Reserved field.
+ * @cmd: Command for QDMA (see FSL_QDMA_CMD_RWTTYPE and
+ * others).
* @data: Pointer to the memory 40-bit address, describes DMA
* source information and DMA destination information.
*/
diff --git a/drivers/dma/idxd/init.c b/drivers/dma/idxd/init.c
index 80355d03004d..35bdefd3728b 100644
--- a/drivers/dma/idxd/init.c
+++ b/drivers/dma/idxd/init.c
@@ -1036,7 +1036,6 @@ static void idxd_reset_prepare(struct pci_dev *pdev)
const char *idxd_name;
int rc;
- dev = &idxd->pdev->dev;
idxd_name = dev_name(idxd_confdev(idxd));
struct idxd_saved_states *idxd_saved __free(kfree) =
diff --git a/drivers/dma/idxd/registers.h b/drivers/dma/idxd/registers.h
index 006ba206ab1b..9c1c546fe443 100644
--- a/drivers/dma/idxd/registers.h
+++ b/drivers/dma/idxd/registers.h
@@ -45,7 +45,7 @@ union gen_cap_reg {
u64 rsvd3:32;
};
u64 bits;
-} __packed;
+};
#define IDXD_GENCAP_OFFSET 0x10
union wq_cap_reg {
@@ -65,7 +65,7 @@ union wq_cap_reg {
u64 rsvd4:8;
};
u64 bits;
-} __packed;
+};
#define IDXD_WQCAP_OFFSET 0x20
#define IDXD_WQCFG_MIN 5
@@ -79,7 +79,7 @@ union group_cap_reg {
u64 rsvd:45;
};
u64 bits;
-} __packed;
+};
#define IDXD_GRPCAP_OFFSET 0x30
union engine_cap_reg {
@@ -88,7 +88,7 @@ union engine_cap_reg {
u64 rsvd:56;
};
u64 bits;
-} __packed;
+};
#define IDXD_ENGCAP_OFFSET 0x38
@@ -114,7 +114,7 @@ union offsets_reg {
u64 rsvd:48;
};
u64 bits[2];
-} __packed;
+};
#define IDXD_TABLE_MULT 0x100
@@ -128,7 +128,7 @@ union gencfg_reg {
u32 rsvd2:18;
};
u32 bits;
-} __packed;
+};
#define IDXD_GENCTRL_OFFSET 0x88
union genctrl_reg {
@@ -139,7 +139,7 @@ union genctrl_reg {
u32 rsvd:29;
};
u32 bits;
-} __packed;
+};
#define IDXD_GENSTATS_OFFSET 0x90
union gensts_reg {
@@ -149,7 +149,7 @@ union gensts_reg {
u32 rsvd:28;
};
u32 bits;
-} __packed;
+};
enum idxd_device_status_state {
IDXD_DEVICE_STATE_DISABLED = 0,
@@ -183,7 +183,7 @@ union idxd_command_reg {
u32 int_req:1;
};
u32 bits;
-} __packed;
+};
enum idxd_cmd {
IDXD_CMD_ENABLE_DEVICE = 1,
@@ -213,7 +213,7 @@ union cmdsts_reg {
u8 active:1;
};
u32 bits;
-} __packed;
+};
#define IDXD_CMDSTS_ACTIVE 0x80000000
#define IDXD_CMDSTS_ERR_MASK 0xff
#define IDXD_CMDSTS_RES_SHIFT 8
@@ -284,7 +284,7 @@ union sw_err_reg {
u64 rsvd5;
};
u64 bits[4];
-} __packed;
+};
union iaa_cap_reg {
struct {
@@ -303,7 +303,7 @@ union iaa_cap_reg {
u64 rsvd:52;
};
u64 bits;
-} __packed;
+};
#define IDXD_IAACAP_OFFSET 0x180
@@ -320,7 +320,7 @@ union evlcfg_reg {
u64 rsvd2:28;
};
u64 bits[2];
-} __packed;
+};
#define IDXD_EVL_SIZE_MIN 0x0040
#define IDXD_EVL_SIZE_MAX 0xffff
@@ -334,7 +334,7 @@ union msix_perm {
u32 pasid:20;
};
u32 bits;
-} __packed;
+};
union group_flags {
struct {
@@ -352,13 +352,13 @@ union group_flags {
u64 rsvd5:26;
};
u64 bits;
-} __packed;
+};
struct grpcfg {
u64 wqs[4];
u64 engines;
union group_flags flags;
-} __packed;
+};
union wqcfg {
struct {
@@ -410,7 +410,7 @@ union wqcfg {
u64 op_config[4];
};
u32 bits[16];
-} __packed;
+};
#define WQCFG_PASID_IDX 2
#define WQCFG_PRIVL_IDX 2
@@ -474,7 +474,7 @@ union idxd_perfcap {
u64 rsvd3:8;
};
u64 bits;
-} __packed;
+};
#define IDXD_EVNTCAP_OFFSET 0x80
union idxd_evntcap {
@@ -483,7 +483,7 @@ union idxd_evntcap {
u64 rsvd:36;
};
u64 bits;
-} __packed;
+};
struct idxd_event {
union {
@@ -493,7 +493,7 @@ struct idxd_event {
};
u32 val;
};
-} __packed;
+};
#define IDXD_CNTRCAP_OFFSET 0x800
struct idxd_cntrcap {
@@ -506,7 +506,7 @@ struct idxd_cntrcap {
u32 val;
};
struct idxd_event events[];
-} __packed;
+};
#define IDXD_PERFRST_OFFSET 0x10
union idxd_perfrst {
@@ -516,7 +516,7 @@ union idxd_perfrst {
u32 rsvd:30;
};
u32 val;
-} __packed;
+};
#define IDXD_OVFSTATUS_OFFSET 0x30
#define IDXD_PERFFRZ_OFFSET 0x20
@@ -533,7 +533,7 @@ union idxd_cntrcfg {
u64 rsvd3:4;
};
u64 val;
-} __packed;
+};
#define IDXD_FLTCFG_OFFSET 0x300
@@ -543,7 +543,7 @@ union idxd_cntrdata {
u64 event_count_value;
};
u64 val;
-} __packed;
+};
union event_cfg {
struct {
@@ -551,7 +551,7 @@ union event_cfg {
u64 event_enc:28;
};
u64 val;
-} __packed;
+};
union filter_cfg {
struct {
@@ -562,7 +562,7 @@ union filter_cfg {
u64 eng:8;
};
u64 val;
-} __packed;
+};
#define IDXD_EVLSTATUS_OFFSET 0xf0
@@ -580,7 +580,7 @@ union evl_status_reg {
u32 bits_upper32;
};
u64 bits;
-} __packed;
+};
#define IDXD_MAX_BATCH_IDENT 256
@@ -620,17 +620,17 @@ struct __evl_entry {
};
u64 fault_addr;
u64 rsvd5;
-} __packed;
+};
struct dsa_evl_entry {
struct __evl_entry e;
struct dsa_completion_record cr;
-} __packed;
+};
struct iax_evl_entry {
struct __evl_entry e;
u64 rsvd[4];
struct iax_completion_record cr;
-} __packed;
+};
#endif
diff --git a/drivers/dma/mmp_tdma.c b/drivers/dma/mmp_tdma.c
index c8dc504510f1..b7fb843c67a6 100644
--- a/drivers/dma/mmp_tdma.c
+++ b/drivers/dma/mmp_tdma.c
@@ -641,7 +641,7 @@ static int mmp_tdma_probe(struct platform_device *pdev)
int chan_num = TDMA_CHANNEL_NUM;
struct gen_pool *pool = NULL;
- type = (enum mmp_tdma_type)device_get_match_data(&pdev->dev);
+ type = (kernel_ulong_t)device_get_match_data(&pdev->dev);
/* always have couple channels */
tdev = devm_kzalloc(&pdev->dev, sizeof(*tdev), GFP_KERNEL);
diff --git a/drivers/dma/mv_xor.c b/drivers/dma/mv_xor.c
index fa6e4646fdc2..1fdcb0f5c9e7 100644
--- a/drivers/dma/mv_xor.c
+++ b/drivers/dma/mv_xor.c
@@ -1061,8 +1061,16 @@ mv_xor_channel_add(struct mv_xor_device *xordev,
*/
mv_chan->dummy_src_addr = dma_map_single(dma_dev->dev,
mv_chan->dummy_src, MV_XOR_MIN_BYTE_COUNT, DMA_FROM_DEVICE);
+ if (dma_mapping_error(dma_dev->dev, mv_chan->dummy_src_addr))
+ return ERR_PTR(-ENOMEM);
+
mv_chan->dummy_dst_addr = dma_map_single(dma_dev->dev,
mv_chan->dummy_dst, MV_XOR_MIN_BYTE_COUNT, DMA_TO_DEVICE);
+ if (dma_mapping_error(dma_dev->dev, mv_chan->dummy_dst_addr)) {
+ ret = -ENOMEM;
+ goto err_unmap_src;
+ }
+
/* allocate coherent memory for hardware descriptors
* note: writecombine gives slightly better performance, but
@@ -1071,8 +1079,10 @@ mv_xor_channel_add(struct mv_xor_device *xordev,
mv_chan->dma_desc_pool_virt =
dma_alloc_wc(&pdev->dev, MV_XOR_POOL_SIZE, &mv_chan->dma_desc_pool,
GFP_KERNEL);
- if (!mv_chan->dma_desc_pool_virt)
- return ERR_PTR(-ENOMEM);
+ if (!mv_chan->dma_desc_pool_virt) {
+ ret = -ENOMEM;
+ goto err_unmap_dst;
+ }
/* discover transaction capabilities from the platform data */
dma_dev->cap_mask = cap_mask;
@@ -1155,6 +1165,13 @@ err_free_irq:
err_free_dma:
dma_free_coherent(&pdev->dev, MV_XOR_POOL_SIZE,
mv_chan->dma_desc_pool_virt, mv_chan->dma_desc_pool);
+err_unmap_dst:
+ dma_unmap_single(dma_dev->dev, mv_chan->dummy_dst_addr,
+ MV_XOR_MIN_BYTE_COUNT, DMA_TO_DEVICE);
+err_unmap_src:
+ dma_unmap_single(dma_dev->dev, mv_chan->dummy_src_addr,
+ MV_XOR_MIN_BYTE_COUNT, DMA_FROM_DEVICE);
+
return ERR_PTR(ret);
}
diff --git a/drivers/dma/nbpfaxi.c b/drivers/dma/nbpfaxi.c
index 7a2488a0d6a3..765462303de0 100644
--- a/drivers/dma/nbpfaxi.c
+++ b/drivers/dma/nbpfaxi.c
@@ -711,6 +711,9 @@ static int nbpf_desc_page_alloc(struct nbpf_channel *chan)
list_add_tail(&ldesc->node, &lhead);
ldesc->hwdesc_dma_addr = dma_map_single(dchan->device->dev,
hwdesc, sizeof(*hwdesc), DMA_TO_DEVICE);
+ if (dma_mapping_error(dchan->device->dev,
+ ldesc->hwdesc_dma_addr))
+ goto unmap_error;
dev_dbg(dev, "%s(): mapped 0x%p to %pad\n", __func__,
hwdesc, &ldesc->hwdesc_dma_addr);
@@ -737,6 +740,16 @@ static int nbpf_desc_page_alloc(struct nbpf_channel *chan)
spin_unlock_irq(&chan->lock);
return ARRAY_SIZE(dpage->desc);
+
+unmap_error:
+ while (i--) {
+ ldesc--; hwdesc--;
+
+ dma_unmap_single(dchan->device->dev, ldesc->hwdesc_dma_addr,
+ sizeof(hwdesc), DMA_TO_DEVICE);
+ }
+
+ return -ENOMEM;
}
static void nbpf_desc_put(struct nbpf_desc *desc)
diff --git a/drivers/dma/qcom/gpi.c b/drivers/dma/qcom/gpi.c
index b1f0001cc99c..8e87738086b2 100644
--- a/drivers/dma/qcom/gpi.c
+++ b/drivers/dma/qcom/gpi.c
@@ -569,17 +569,6 @@ static inline void gpi_write_reg(struct gpii *gpii, void __iomem *addr, u32 val)
writel_relaxed(val, addr);
}
-/* gpi_write_reg_field - write to specific bit field */
-static inline void gpi_write_reg_field(struct gpii *gpii, void __iomem *addr,
- u32 mask, u32 shift, u32 val)
-{
- u32 tmp = gpi_read_reg(gpii, addr);
-
- tmp &= ~mask;
- val = tmp | ((val << shift) & mask);
- gpi_write_reg(gpii, addr, val);
-}
-
static __always_inline void
gpi_update_reg(struct gpii *gpii, u32 offset, u32 mask, u32 val)
{
diff --git a/drivers/dma/sh/Kconfig b/drivers/dma/sh/Kconfig
index 6ea5a880b433..8184d475a49a 100644
--- a/drivers/dma/sh/Kconfig
+++ b/drivers/dma/sh/Kconfig
@@ -16,7 +16,7 @@ config SH_DMAE_BASE
depends on SUPERH || COMPILE_TEST
depends on !SUPERH || SH_DMA
depends on !SH_DMA_API
- default y
+ default SUPERH || SH_DMA
select RENESAS_DMA
help
Enable support for the Renesas SuperH DMA controllers.
diff --git a/drivers/dma/stm32/stm32-dma.c b/drivers/dma/stm32/stm32-dma.c
index 917f8e922373..04389936c8a6 100644
--- a/drivers/dma/stm32/stm32-dma.c
+++ b/drivers/dma/stm32/stm32-dma.c
@@ -613,7 +613,7 @@ static void stm32_dma_start_transfer(struct stm32_dma_chan *chan)
reg->dma_scr |= STM32_DMA_SCR_EN;
stm32_dma_write(dmadev, STM32_DMA_SCR(chan->id), reg->dma_scr);
- dev_dbg(chan2dev(chan), "vchan %pK: started\n", &chan->vchan);
+ dev_dbg(chan2dev(chan), "vchan %p: started\n", &chan->vchan);
}
static void stm32_dma_configure_next_sg(struct stm32_dma_chan *chan)
@@ -676,7 +676,7 @@ static void stm32_dma_handle_chan_paused(struct stm32_dma_chan *chan)
chan->status = DMA_PAUSED;
- dev_dbg(chan2dev(chan), "vchan %pK: paused\n", &chan->vchan);
+ dev_dbg(chan2dev(chan), "vchan %p: paused\n", &chan->vchan);
}
static void stm32_dma_post_resume_reconfigure(struct stm32_dma_chan *chan)
@@ -728,7 +728,7 @@ static void stm32_dma_post_resume_reconfigure(struct stm32_dma_chan *chan)
dma_scr |= STM32_DMA_SCR_EN;
stm32_dma_write(dmadev, STM32_DMA_SCR(chan->id), dma_scr);
- dev_dbg(chan2dev(chan), "vchan %pK: reconfigured after pause/resume\n", &chan->vchan);
+ dev_dbg(chan2dev(chan), "vchan %p: reconfigured after pause/resume\n", &chan->vchan);
}
static void stm32_dma_handle_chan_done(struct stm32_dma_chan *chan, u32 scr)
@@ -744,7 +744,7 @@ static void stm32_dma_handle_chan_done(struct stm32_dma_chan *chan, u32 scr)
/* cyclic while CIRC/DBM disable => post resume reconfiguration needed */
if (!(scr & (STM32_DMA_SCR_CIRC | STM32_DMA_SCR_DBM)))
stm32_dma_post_resume_reconfigure(chan);
- else if (scr & STM32_DMA_SCR_DBM)
+ else if (scr & STM32_DMA_SCR_DBM && chan->desc->num_sgs > 2)
stm32_dma_configure_next_sg(chan);
} else {
chan->busy = false;
@@ -820,7 +820,7 @@ static void stm32_dma_issue_pending(struct dma_chan *c)
spin_lock_irqsave(&chan->vchan.lock, flags);
if (vchan_issue_pending(&chan->vchan) && !chan->desc && !chan->busy) {
- dev_dbg(chan2dev(chan), "vchan %pK: issued\n", &chan->vchan);
+ dev_dbg(chan2dev(chan), "vchan %p: issued\n", &chan->vchan);
stm32_dma_start_transfer(chan);
}
@@ -922,7 +922,7 @@ static int stm32_dma_resume(struct dma_chan *c)
spin_unlock_irqrestore(&chan->vchan.lock, flags);
- dev_dbg(chan2dev(chan), "vchan %pK: resumed\n", &chan->vchan);
+ dev_dbg(chan2dev(chan), "vchan %p: resumed\n", &chan->vchan);
return 0;
}
diff --git a/drivers/dma/stm32/stm32-dma3.c b/drivers/dma/stm32/stm32-dma3.c
index 0c6c4258b195..50e7106c5cb7 100644
--- a/drivers/dma/stm32/stm32-dma3.c
+++ b/drivers/dma/stm32/stm32-dma3.c
@@ -801,7 +801,7 @@ static void stm32_dma3_chan_start(struct stm32_dma3_chan *chan)
chan->dma_status = DMA_IN_PROGRESS;
- dev_dbg(chan2dev(chan), "vchan %pK: started\n", &chan->vchan);
+ dev_dbg(chan2dev(chan), "vchan %p: started\n", &chan->vchan);
}
static int stm32_dma3_chan_suspend(struct stm32_dma3_chan *chan, bool susp)
@@ -1452,7 +1452,7 @@ static int stm32_dma3_pause(struct dma_chan *c)
chan->dma_status = DMA_PAUSED;
- dev_dbg(chan2dev(chan), "vchan %pK: paused\n", &chan->vchan);
+ dev_dbg(chan2dev(chan), "vchan %p: paused\n", &chan->vchan);
return 0;
}
@@ -1465,7 +1465,7 @@ static int stm32_dma3_resume(struct dma_chan *c)
chan->dma_status = DMA_IN_PROGRESS;
- dev_dbg(chan2dev(chan), "vchan %pK: resumed\n", &chan->vchan);
+ dev_dbg(chan2dev(chan), "vchan %p: resumed\n", &chan->vchan);
return 0;
}
@@ -1490,7 +1490,7 @@ static int stm32_dma3_terminate_all(struct dma_chan *c)
spin_unlock_irqrestore(&chan->vchan.lock, flags);
vchan_dma_desc_free_list(&chan->vchan, &head);
- dev_dbg(chan2dev(chan), "vchan %pK: terminated\n", &chan->vchan);
+ dev_dbg(chan2dev(chan), "vchan %p: terminated\n", &chan->vchan);
return 0;
}
@@ -1543,7 +1543,7 @@ static void stm32_dma3_issue_pending(struct dma_chan *c)
spin_lock_irqsave(&chan->vchan.lock, flags);
if (vchan_issue_pending(&chan->vchan) && !chan->swdesc) {
- dev_dbg(chan2dev(chan), "vchan %pK: issued\n", &chan->vchan);
+ dev_dbg(chan2dev(chan), "vchan %p: issued\n", &chan->vchan);
stm32_dma3_chan_start(chan);
}
diff --git a/drivers/dma/stm32/stm32-mdma.c b/drivers/dma/stm32/stm32-mdma.c
index e6d525901de7..080c1c725216 100644
--- a/drivers/dma/stm32/stm32-mdma.c
+++ b/drivers/dma/stm32/stm32-mdma.c
@@ -1187,7 +1187,7 @@ static void stm32_mdma_start_transfer(struct stm32_mdma_chan *chan)
chan->busy = true;
- dev_dbg(chan2dev(chan), "vchan %pK: started\n", &chan->vchan);
+ dev_dbg(chan2dev(chan), "vchan %p: started\n", &chan->vchan);
}
static void stm32_mdma_issue_pending(struct dma_chan *c)
@@ -1200,7 +1200,7 @@ static void stm32_mdma_issue_pending(struct dma_chan *c)
if (!vchan_issue_pending(&chan->vchan))
goto end;
- dev_dbg(chan2dev(chan), "vchan %pK: issued\n", &chan->vchan);
+ dev_dbg(chan2dev(chan), "vchan %p: issued\n", &chan->vchan);
if (!chan->desc && !chan->busy)
stm32_mdma_start_transfer(chan);
@@ -1220,7 +1220,7 @@ static int stm32_mdma_pause(struct dma_chan *c)
spin_unlock_irqrestore(&chan->vchan.lock, flags);
if (!ret)
- dev_dbg(chan2dev(chan), "vchan %pK: pause\n", &chan->vchan);
+ dev_dbg(chan2dev(chan), "vchan %p: pause\n", &chan->vchan);
return ret;
}
@@ -1261,7 +1261,7 @@ static int stm32_mdma_resume(struct dma_chan *c)
spin_unlock_irqrestore(&chan->vchan.lock, flags);
- dev_dbg(chan2dev(chan), "vchan %pK: resume\n", &chan->vchan);
+ dev_dbg(chan2dev(chan), "vchan %p: resume\n", &chan->vchan);
return 0;
}
diff --git a/drivers/dma/sun4i-dma.c b/drivers/dma/sun4i-dma.c
index 24796aaaddfa..00d2fd38d17f 100644
--- a/drivers/dma/sun4i-dma.c
+++ b/drivers/dma/sun4i-dma.c
@@ -1249,11 +1249,10 @@ static int sun4i_dma_probe(struct platform_device *pdev)
if (priv->irq < 0)
return priv->irq;
- priv->clk = devm_clk_get(&pdev->dev, NULL);
- if (IS_ERR(priv->clk)) {
- dev_err(&pdev->dev, "No clock specified\n");
- return PTR_ERR(priv->clk);
- }
+ priv->clk = devm_clk_get_enabled(&pdev->dev, NULL);
+ if (IS_ERR(priv->clk))
+ return dev_err_probe(&pdev->dev, PTR_ERR(priv->clk),
+ "Couldn't start the clock\n");
if (priv->cfg->has_reset) {
priv->rst = devm_reset_control_get_exclusive_deasserted(&pdev->dev, NULL);
@@ -1328,12 +1327,6 @@ static int sun4i_dma_probe(struct platform_device *pdev)
vchan_init(&vchan->vc, &priv->slave);
}
- ret = clk_prepare_enable(priv->clk);
- if (ret) {
- dev_err(&pdev->dev, "Couldn't enable the clock\n");
- return ret;
- }
-
/*
* Make sure the IRQs are all disabled and accounted for. The bootloader
* likes to leave these dirty
@@ -1343,33 +1336,23 @@ static int sun4i_dma_probe(struct platform_device *pdev)
ret = devm_request_irq(&pdev->dev, priv->irq, sun4i_dma_interrupt,
0, dev_name(&pdev->dev), priv);
- if (ret) {
- dev_err(&pdev->dev, "Cannot request IRQ\n");
- goto err_clk_disable;
- }
+ if (ret)
+ return dev_err_probe(&pdev->dev, ret, "Cannot request IRQ\n");
- ret = dma_async_device_register(&priv->slave);
- if (ret) {
- dev_warn(&pdev->dev, "Failed to register DMA engine device\n");
- goto err_clk_disable;
- }
+ ret = dmaenginem_async_device_register(&priv->slave);
+ if (ret)
+ return dev_err_probe(&pdev->dev, ret,
+ "Failed to register DMA engine device\n");
ret = of_dma_controller_register(pdev->dev.of_node, sun4i_dma_of_xlate,
priv);
- if (ret) {
- dev_err(&pdev->dev, "of_dma_controller_register failed\n");
- goto err_dma_unregister;
- }
+ if (ret)
+ return dev_err_probe(&pdev->dev, ret,
+ "Failed to register translation function\n");
dev_dbg(&pdev->dev, "Successfully probed SUN4I_DMA\n");
return 0;
-
-err_dma_unregister:
- dma_async_device_unregister(&priv->slave);
-err_clk_disable:
- clk_disable_unprepare(priv->clk);
- return ret;
}
static void sun4i_dma_remove(struct platform_device *pdev)
@@ -1380,9 +1363,6 @@ static void sun4i_dma_remove(struct platform_device *pdev)
disable_irq(priv->irq);
of_dma_controller_free(pdev->dev.of_node);
- dma_async_device_unregister(&priv->slave);
-
- clk_disable_unprepare(priv->clk);
}
static struct sun4i_dma_config sun4i_a10_dma_cfg = {
diff --git a/drivers/dma/ti/Kconfig b/drivers/dma/ti/Kconfig
index 2adc2cca10e9..dbf168146d35 100644
--- a/drivers/dma/ti/Kconfig
+++ b/drivers/dma/ti/Kconfig
@@ -17,7 +17,7 @@ config TI_EDMA
select DMA_ENGINE
select DMA_VIRTUAL_CHANNELS
select TI_DMA_CROSSBAR if (ARCH_OMAP || COMPILE_TEST)
- default y
+ default ARCH_DAVINCI || ARCH_OMAP || ARCH_KEYSTONE
help
Enable support for the TI EDMA (Enhanced DMA) controller. This DMA
engine is found on TI DaVinci, AM33xx, AM43xx, DRA7xx and Keystone 2
@@ -29,7 +29,7 @@ config DMA_OMAP
select DMA_ENGINE
select DMA_VIRTUAL_CHANNELS
select TI_DMA_CROSSBAR if (SOC_DRA7XX || COMPILE_TEST)
- default y
+ default ARCH_OMAP
help
Enable support for the TI sDMA (System DMA or DMA4) controller. This
DMA engine is found on OMAP and DRA7xx parts.
generated by cgit (git 2.34.1) at 2025-08-02 23:44:37 +0000