Skip to content

Commit

Permalink
irqchip/gic-v3-its: Change unsigned types for AArch32 compatibility
Browse files Browse the repository at this point in the history
Make sure that constants which are supposed to be applied on 64-bit
data is actually unsigned long long, so they won't be truncated when
used in 32-bit mode.

Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
  • Loading branch information
Vladimir Murzin authored and Marc Zyngier committed Nov 29, 2016
1 parent 016f98a commit b11283e
Show file tree
Hide file tree
Showing 2 changed files with 16 additions and 16 deletions.
28 changes: 14 additions & 14 deletions drivers/irqchip/irq-gic-v3-its.c
Original file line number Diff line number Diff line change
Expand Up @@ -196,7 +196,7 @@ typedef struct its_collection *(*its_cmd_builder_t)(struct its_cmd_block *,

static void its_encode_cmd(struct its_cmd_block *cmd, u8 cmd_nr)
{
cmd->raw_cmd[0] &= ~0xffUL;
cmd->raw_cmd[0] &= ~0xffULL;
cmd->raw_cmd[0] |= cmd_nr;
}

Expand All @@ -208,43 +208,43 @@ static void its_encode_devid(struct its_cmd_block *cmd, u32 devid)

static void its_encode_event_id(struct its_cmd_block *cmd, u32 id)
{
cmd->raw_cmd[1] &= ~0xffffffffUL;
cmd->raw_cmd[1] &= ~0xffffffffULL;
cmd->raw_cmd[1] |= id;
}

static void its_encode_phys_id(struct its_cmd_block *cmd, u32 phys_id)
{
cmd->raw_cmd[1] &= 0xffffffffUL;
cmd->raw_cmd[1] &= 0xffffffffULL;
cmd->raw_cmd[1] |= ((u64)phys_id) << 32;
}

static void its_encode_size(struct its_cmd_block *cmd, u8 size)
{
cmd->raw_cmd[1] &= ~0x1fUL;
cmd->raw_cmd[1] &= ~0x1fULL;
cmd->raw_cmd[1] |= size & 0x1f;
}

static void its_encode_itt(struct its_cmd_block *cmd, u64 itt_addr)
{
cmd->raw_cmd[2] &= ~0xffffffffffffUL;
cmd->raw_cmd[2] |= itt_addr & 0xffffffffff00UL;
cmd->raw_cmd[2] &= ~0xffffffffffffULL;
cmd->raw_cmd[2] |= itt_addr & 0xffffffffff00ULL;
}

static void its_encode_valid(struct its_cmd_block *cmd, int valid)
{
cmd->raw_cmd[2] &= ~(1UL << 63);
cmd->raw_cmd[2] &= ~(1ULL << 63);
cmd->raw_cmd[2] |= ((u64)!!valid) << 63;
}

static void its_encode_target(struct its_cmd_block *cmd, u64 target_addr)
{
cmd->raw_cmd[2] &= ~(0xffffffffUL << 16);
cmd->raw_cmd[2] |= (target_addr & (0xffffffffUL << 16));
cmd->raw_cmd[2] &= ~(0xffffffffULL << 16);
cmd->raw_cmd[2] |= (target_addr & (0xffffffffULL << 16));
}

static void its_encode_collection(struct its_cmd_block *cmd, u16 col)
{
cmd->raw_cmd[2] &= ~0xffffUL;
cmd->raw_cmd[2] &= ~0xffffULL;
cmd->raw_cmd[2] |= col;
}

Expand Down Expand Up @@ -657,8 +657,8 @@ static void its_irq_compose_msi_msg(struct irq_data *d, struct msi_msg *msg)
its = its_dev->its;
addr = its->phys_base + GITS_TRANSLATER;

msg->address_lo = addr & ((1UL << 32) - 1);
msg->address_hi = addr >> 32;
msg->address_lo = lower_32_bits(addr);
msg->address_hi = upper_32_bits(addr);
msg->data = its_get_event_id(d);

iommu_dma_map_msi_msg(d->irq, msg);
Expand Down Expand Up @@ -935,9 +935,9 @@ static int its_setup_baser(struct its_node *its, struct its_baser *baser,
}

if (val != tmp) {
pr_err("ITS@%pa: %s doesn't stick: %lx %lx\n",
pr_err("ITS@%pa: %s doesn't stick: %llx %llx\n",
&its->phys_base, its_base_type_string[type],
(unsigned long) val, (unsigned long) tmp);
val, tmp);
free_pages((unsigned long)base, order);
return -ENXIO;
}
Expand Down
4 changes: 2 additions & 2 deletions include/linux/irqchip/arm-gic-v3.h
Original file line number Diff line number Diff line change
Expand Up @@ -239,7 +239,7 @@
#define GITS_TYPER_PTA (1UL << 19)
#define GITS_TYPER_HWCOLLCNT_SHIFT 24

#define GITS_CBASER_VALID (1UL << 63)
#define GITS_CBASER_VALID (1ULL << 63)
#define GITS_CBASER_SHAREABILITY_SHIFT (10)
#define GITS_CBASER_INNER_CACHEABILITY_SHIFT (59)
#define GITS_CBASER_OUTER_CACHEABILITY_SHIFT (53)
Expand All @@ -265,7 +265,7 @@

#define GITS_BASER_NR_REGS 8

#define GITS_BASER_VALID (1UL << 63)
#define GITS_BASER_VALID (1ULL << 63)
#define GITS_BASER_INDIRECT (1ULL << 62)

#define GITS_BASER_INNER_CACHEABILITY_SHIFT (59)
Expand Down

0 comments on commit b11283e

Please sign in to comment.