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remoteproc: add warning on resource table cast

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Today resource table supports only 32bit address fields.
This is not compliant with 64bit platform for which addresses
are cast in 32bit.
This patch adds warn messages when address cast is done.

Signed-off-by: Loic Pallardy <loic.pallardy@st.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
This commit is contained in:
Loic Pallardy 2019-01-10 14:49:08 +01:00 committed by Bjorn Andersson
parent 80137b4072
commit b36de8cfd1
1 changed files with 14 additions and 2 deletions
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16
drivers/remoteproc/remoteproc_core.c
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@ -47,6 +47,8 @@
#include "remoteproc_internal.h"
#define HIGH_BITS_MASK 0xFFFFFFFF00000000ULL
static DEFINE_MUTEX(rproc_list_mutex);
static LIST_HEAD(rproc_list);
@ -816,6 +818,10 @@ static int rproc_alloc_carveout(struct rproc *rproc,
dev_dbg(dev, "carveout mapped 0x%x to %pad\n",
mem->da, &dma);
} else {
/* Update device address as undefined by requester */
if ((u64)dma & HIGH_BITS_MASK)
dev_warn(dev, "DMA address cast in 32bit to fit resource table format\n");
mem->da = (u32)dma;
}
@ -1159,6 +1165,7 @@ static int rproc_alloc_registered_carveouts(struct rproc *rproc)
struct rproc_mem_entry *entry, *tmp;
struct fw_rsc_carveout *rsc;
struct device *dev = &rproc->dev;
u64 pa;
int ret;
list_for_each_entry_safe(entry, tmp, &rproc->carveouts, node) {
@ -1195,10 +1202,15 @@ static int rproc_alloc_registered_carveouts(struct rproc *rproc)
/* Use va if defined else dma to generate pa */
if (entry->va)
rsc->pa = (u32)rproc_va_to_pa(entry->va);
pa = (u64)rproc_va_to_pa(entry->va);
else
rsc->pa = (u32)entry->dma;
pa = (u64)entry->dma;
if (((u64)pa) & HIGH_BITS_MASK)
dev_warn(dev,
"Physical address cast in 32bit to fit resource table format\n");
rsc->pa = (u32)pa;
rsc->da = entry->da;
rsc->len = entry->len;
}