ddma: Add Phytium DDMA controller driver support #142
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This patch document provide DT bindings for the Phytium DDMA controller. Signed-off-by: Li Guohui <liguohui2061@phytium.com.cn> Signed-off-by: Liu Tianyu <liutianyu1250@phytium.com.cn> Signed-off-by: Li Mingzhe <limingzhe1839@phytium.com.cn> Signed-off-by: Wang Yinfeng <wangyinfeng@phytium.com.cn> Signed-off-by: Lan Hengyu <lanhengyu1395@phytium.com.cn>
This patch provides DDMA (DEVICE DMA) support mainly for DMA transmission on low-speed devices, such as UART/SPI. Signed-off-by: Li Guohui <liguohui2061@phytium.com.cn> Signed-off-by: Liu Tianyu <liutianyu1250@phytium.com.cn> Signed-off-by: Lan Hengyu <lanhengyu1395@phytium.com.cn> Signed-off-by: Li Mingzhe <limingzhe1839@phytium.com.cn> Signed-off-by: Wang Yinfeng <wangyinfeng@phytium.com.cn>
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Hi @hhhui-L. Thanks for your PR. 😃 |
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deepin pr auto reviewThis is the header file for the Phytium DDMA (Direct-Mapped Access Controller) driver. It provides the necessary data structures and defines to interface the Phytium DDMA hardware with Linux. The file starts with a series of macros and structures that define the data types and configurations required for the DDMA hardware. Then, it defines the various DDMA control and data structures, as well as the global and channel registers. Finally, it includes the necessary defines and functions to initialize and configure the DDMA hardware. |
Avenger-285714
merged commit ff2641a
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deepin-community:linux-6.6.y
[ Upstream commit e7f3187 ] Recently, when running './test_progs -j', I occasionally hit the following errors: test_lwt_redirect:PASS:pthread_create 0 nsec test_lwt_redirect_run:FAIL:netns_create unexpected error: 256 (errno 0) deepin-community#142/2 lwt_redirect/lwt_redirect_normal_nomac:FAIL deepin-community#142 lwt_redirect:FAIL test_lwt_reroute:PASS:pthread_create 0 nsec test_lwt_reroute_run:FAIL:netns_create unexpected error: 256 (errno 0) test_lwt_reroute:PASS:pthread_join 0 nsec deepin-community#143/2 lwt_reroute/lwt_reroute_qdisc_dropped:FAIL deepin-community#143 lwt_reroute:FAIL The netns_create() definition looks like below: #define NETNS "ns_lwt" static inline int netns_create(void) { return system("ip netns add " NETNS); } One possibility is that both lwt_redirect and lwt_reroute create netns with the same name "ns_lwt" which may cause conflict. I tried the following example: $ sudo ip netns add abc $ echo $? 0 $ sudo ip netns add abc Cannot create namespace file "/var/run/netns/abc": File exists $ echo $? 1 $ The return code for above netns_create() is 256. The internet search suggests that the return value for 'ip netns add ns_lwt' is 1, which matches the above 'sudo ip netns add abc' example. This patch tried to use different netns names for two tests to avoid 'ip netns add <name>' failure. I ran './test_progs -j' 10 times and all succeeded with lwt_redirect/lwt_reroute tests. Signed-off-by: Yonghong Song <yonghong.song@linux.dev> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Tested-by: Eduard Zingerman <eddyz87@gmail.com> Link: https://lore.kernel.org/bpf/20240205052914.1742687-1-yonghong.song@linux.dev Stable-dep-of: 16b795cc5952 ("selftests/bpf: Fix redefinition errors compiling lwt_reroute.c") Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit e7f3187 ] Recently, when running './test_progs -j', I occasionally hit the following errors: test_lwt_redirect:PASS:pthread_create 0 nsec test_lwt_redirect_run:FAIL:netns_create unexpected error: 256 (errno 0) #142/2 lwt_redirect/lwt_redirect_normal_nomac:FAIL #142 lwt_redirect:FAIL test_lwt_reroute:PASS:pthread_create 0 nsec test_lwt_reroute_run:FAIL:netns_create unexpected error: 256 (errno 0) test_lwt_reroute:PASS:pthread_join 0 nsec #143/2 lwt_reroute/lwt_reroute_qdisc_dropped:FAIL #143 lwt_reroute:FAIL The netns_create() definition looks like below: #define NETNS "ns_lwt" static inline int netns_create(void) { return system("ip netns add " NETNS); } One possibility is that both lwt_redirect and lwt_reroute create netns with the same name "ns_lwt" which may cause conflict. I tried the following example: $ sudo ip netns add abc $ echo $? 0 $ sudo ip netns add abc Cannot create namespace file "/var/run/netns/abc": File exists $ echo $? 1 $ The return code for above netns_create() is 256. The internet search suggests that the return value for 'ip netns add ns_lwt' is 1, which matches the above 'sudo ip netns add abc' example. This patch tried to use different netns names for two tests to avoid 'ip netns add <name>' failure. I ran './test_progs -j' 10 times and all succeeded with lwt_redirect/lwt_reroute tests. Signed-off-by: Yonghong Song <yonghong.song@linux.dev> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Tested-by: Eduard Zingerman <eddyz87@gmail.com> Link: https://lore.kernel.org/bpf/20240205052914.1742687-1-yonghong.song@linux.dev Stable-dep-of: 16b795cc5952 ("selftests/bpf: Fix redefinition errors compiling lwt_reroute.c") Signed-off-by: Sasha Levin <sashal@kernel.org>
This patch provides DDMA (DEVICE DMA) support mainly for DMA transmission on low-speed devices, such as UART/SPI.