opensbi.git/lib/sbi_fifo.c, branch master

lib: Move sbi core library to lib/sbi

2019-06-19T04:18:51Z

Signed-off-by: Atish Patra Acked-by: Anup Patel

all: run clang-format and update checked-in files

2019-04-24T04:19:46Z

Noisy commit, no functional changes. Generated with an current upstream clang-format and: clang-format -i $(find . -name \*.[ch]) Signed-off-by: Olof Johansson

lib: Provide a lock enabled iteration of fifo.

2019-04-10T10:16:35Z

Implement a lock enabled iteration for fifo so that caller can determine if next entry can be skipped or any existing entries in fifo can be updated before enqueue. Signed-off-by: Atish Patra

lib: Pack struct sbi_fifo

2019-04-03T20:48:38Z

This patch reduces memory consumed by struct sbi_fifo by droping redundant "head" member and using u16 in-place of "unsigned long". Signed-off-by: Anup Patel

lib: More improvements to sbi_fifo

2019-04-03T20:48:38Z

This patch does following improvements to sbi_fifo: 1. Use valid SBI_Exxxx error codes instead of -1 2. The sbi_fifo_is_full() and sbi_fifo_is_empty() did not acquire qlock before accessing head and tail hence fixed it 3. Added avail member for ease in debugging and simplifying head/tail updates. Due to above changes size of sbi_fifo changes from 48 bytes to 56 bytes. Signed-off-by: Anup Patel

lib: Use a fifo to keep track of sfence related IPIs.

2019-04-03T04:27:42Z

Currently, there is no provision for tracking multiple IPIs sent to a single hart at the same time by different harts. Use a fifo manage the outstanding requests. While dequeueing, read all the entries once, because we have only 1 bit to track the type of IPI. Once the queue is full, busy wait until the there is space available in queue. This is not the most elegant approach. It should be changed in favor of a wakeup event once available in opensbi. Signed-off-by: Atish Patra

lib: Add a fifo implementation.

2019-04-03T04:27:42Z

Implement a fifo to accomodate outstanding IPIs for a specific hart at the same time. Signed-off-by: Atish Patra