opensbi.git/lib/sbi_ipi.c, branch v0.2

lib: Fix mask shift in sbi_ipi_send_many()

2019-02-18T13:09:02Z

The mask shift in for-loop of sbi_ipi_send_many() is broken with commit 918c1354b75c74b62f67c4e929551d643f035443 ("lib: Improve delivery of SBI_IPI_EVENT_HALT") This patch fix it. Signed-off-by: Anup Patel

lib: Fix small typo on sbi_ipi.c

2019-02-18T03:51:58Z

lib: Improve delivery of SBI_IPI_EVENT_HALT

2019-02-18T03:51:58Z

When sbi_ipi_send_many gets called with the current hartid included on pmask (or when pmask is NULL), and we send a HALT event, since the for loop works sequentially over all hartids on the mask, we may send a HALT event to the current hart before the loop finishes. So we will halt the current hart before it can deliver a HALT IPI to the rest and some harts will remain active. Make sure we send an IPI to the current hart after we've finished with everybody else. Signed-off-by: Nick Kossifidis

lib: Use CSR_ instead of for csr_*()

2019-02-14T04:01:18Z

Some older toolchains may not have all the csr's defined. Update all the csr functions to use the CSR_ #define values instead of the toolchain defined values. Suggested-by: Olof Johansson Signed-off-by: Atish Patra

all: Update copyright header in all files

2019-01-24T08:37:47Z

This patch updates copyright header in all files as follows: 1. Makes "SPDX-License-Identifier: BSD-2-Clause" as first line 2. Change copyright year to 2019 for Western Digital Signed-off-by: Anup Patel

include: Rename ipi_inject() to ipi_send() for sbi_platform

2019-01-23T03:09:26Z

For better naming, we rename ipi_inject() to ipi_send() in struct sbi_platform. We also replace term "inject" with "send" in all related places. Signed-off-by: Anup Patel

lib: Remove source_hart and hartid parameter from IPI callbacks

2019-01-23T03:09:26Z

The source_hart and hartid parameter is really not required in IPI callbacks of sbi_platform because current hartid can always be obtained by calling sbi_current_hartid() API. Signed-off-by: Anup Patel

lib: Allow sending IPI to self.

2019-01-22T04:33:49Z

S-mode software may send IPI to self. For example, tlbflush may be executed for the same hart. Let the hart send IPI to itself. It's an overhead but doesn't break anything. However, if we don't allow it, it breaks if S-mode keep sending IPIs. Signed-off-by: Atish Patra

lib: Fix ipi type update

2019-01-22T04:33:49Z

IPIs are updated in scratch space by source hart. However, different harts or same hart may want to send different IPIs before previous IPI was read by the target hart. Currently, previous IPI type is overwritten in that case. Use atomic bit set/clear operations to update IPIs. Signed-off-by: Atish Patra

lib: Simplify sbi_platform ipi_init() hooks

2018-12-27T04:05:09Z

Instead of having separate ipi_init() hooks for cold and warm boot, this patch updates struct sbi_platform to have just one ipi_init() hook. The type of boot (cold or warm) is now a boolean flag parameter for the updated ipi_init() hook. Signed-off-by: Anup Patel