diff options
| author | Alexandre Bounine <alexandre.bounine@idt.com> | 2016-03-22 21:26:44 (GMT) |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-03-22 22:36:02 (GMT) |
| commit | 9a0b062742e7e039273c0c2ba4b96ad9ec7e7d8f (patch) | |
| tree | 902e3fd63e79f4911b2896a67e8e06d93626abd4 /arch/powerpc/sysdev/fsl_rmu.c | |
| parent | b6cb95e8eb97e51a1a1b5609b59df859cc6dc2f2 (diff) | |
| download | linux-9a0b062742e7e039273c0c2ba4b96ad9ec7e7d8f.tar.xz | |
rapidio: add global inbound port write interfaces
Add new Port Write handler registration interfaces that attach PW
handlers to local mport device objects. This is different from old
interface that attaches PW callback to individual RapidIO device. The
new interfaces are intended for use for common event handling (e.g.
hot-plug notifications) while the old interface is available for
individual device drivers.
This patch is based on patch proposed by Andre van Herk but preserves
existing per-device interface and adds lock protection for list
handling.
Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com>
Cc: Matt Porter <mporter@kernel.crashing.org>
Cc: Aurelien Jacquiot <a-jacquiot@ti.com>
Cc: Andre van Herk <andre.van.herk@prodrive-technologies.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/powerpc/sysdev/fsl_rmu.c')
| -rw-r--r-- | arch/powerpc/sysdev/fsl_rmu.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/arch/powerpc/sysdev/fsl_rmu.c b/arch/powerpc/sysdev/fsl_rmu.c index ffe0ee8..c1826de 100644 --- a/arch/powerpc/sysdev/fsl_rmu.c +++ b/arch/powerpc/sysdev/fsl_rmu.c @@ -481,14 +481,14 @@ pw_done: static void fsl_pw_dpc(struct work_struct *work) { struct fsl_rio_pw *pw = container_of(work, struct fsl_rio_pw, pw_work); - u32 msg_buffer[RIO_PW_MSG_SIZE/sizeof(u32)]; + union rio_pw_msg msg_buffer; + int i; /* * Process port-write messages */ - while (kfifo_out_spinlocked(&pw->pw_fifo, (unsigned char *)msg_buffer, + while (kfifo_out_spinlocked(&pw->pw_fifo, (unsigned char *)&msg_buffer, RIO_PW_MSG_SIZE, &pw->pw_fifo_lock)) { - /* Process one message */ #ifdef DEBUG_PW { u32 i; @@ -496,15 +496,19 @@ static void fsl_pw_dpc(struct work_struct *work) for (i = 0; i < RIO_PW_MSG_SIZE/sizeof(u32); i++) { if ((i%4) == 0) pr_debug("\n0x%02x: 0x%08x", i*4, - msg_buffer[i]); + msg_buffer.raw[i]); else - pr_debug(" 0x%08x", msg_buffer[i]); + pr_debug(" 0x%08x", msg_buffer.raw[i]); } pr_debug("\n"); } #endif /* Pass the port-write message to RIO core for processing */ - rio_inb_pwrite_handler((union rio_pw_msg *)msg_buffer); + for (i = 0; i < MAX_PORT_NUM; i++) { + if (pw->mport[i]) + rio_inb_pwrite_handler(pw->mport[i], + &msg_buffer); + } } } |