diff options
| -rw-r--r-- | drivers/irqchip/irq-gic-v3-its.c | 84 |
1 files changed, 47 insertions, 37 deletions
diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c index 89da961e949e..7ad0fc8d2e23 100644 --- a/drivers/irqchip/irq-gic-v3-its.c +++ b/drivers/irqchip/irq-gic-v3-its.c @@ -494,43 +494,53 @@ static void its_wait_for_range_completion(struct its_node *its, } } -static void its_send_single_command(struct its_node *its, - its_cmd_builder_t builder, - struct its_cmd_desc *desc) -{ - struct its_cmd_block *cmd, *sync_cmd, *next_cmd; - struct its_collection *sync_col; - unsigned long flags; - - raw_spin_lock_irqsave(&its->lock, flags); - - cmd = its_allocate_entry(its); - if (!cmd) { /* We're soooooo screewed... */ - pr_err_ratelimited("ITS can't allocate, dropping command\n"); - raw_spin_unlock_irqrestore(&its->lock, flags); - return; - } - sync_col = builder(cmd, desc); - its_flush_cmd(its, cmd); - - if (sync_col) { - sync_cmd = its_allocate_entry(its); - if (!sync_cmd) { - pr_err_ratelimited("ITS can't SYNC, skipping\n"); - goto post; - } - its_encode_cmd(sync_cmd, GITS_CMD_SYNC); - its_encode_target(sync_cmd, sync_col->target_address); - its_fixup_cmd(sync_cmd); - its_flush_cmd(its, sync_cmd); - } - -post: - next_cmd = its_post_commands(its); - raw_spin_unlock_irqrestore(&its->lock, flags); - - its_wait_for_range_completion(its, cmd, next_cmd); -} +/* Warning, macro hell follows */ +#define BUILD_SINGLE_CMD_FUNC(name, buildtype, synctype, buildfn) \ +void name(struct its_node *its, \ + buildtype builder, \ + struct its_cmd_desc *desc) \ +{ \ + struct its_cmd_block *cmd, *sync_cmd, *next_cmd; \ + synctype *sync_obj; \ + unsigned long flags; \ + \ + raw_spin_lock_irqsave(&its->lock, flags); \ + \ + cmd = its_allocate_entry(its); \ + if (!cmd) { /* We're soooooo screewed... */ \ + raw_spin_unlock_irqrestore(&its->lock, flags); \ + return; \ + } \ + sync_obj = builder(cmd, desc); \ + its_flush_cmd(its, cmd); \ + \ + if (sync_obj) { \ + sync_cmd = its_allocate_entry(its); \ + if (!sync_cmd) \ + goto post; \ + \ + buildfn(sync_cmd, sync_obj); \ + its_flush_cmd(its, sync_cmd); \ + } \ + \ +post: \ + next_cmd = its_post_commands(its); \ + raw_spin_unlock_irqrestore(&its->lock, flags); \ + \ + its_wait_for_range_completion(its, cmd, next_cmd); \ +} + +static void its_build_sync_cmd(struct its_cmd_block *sync_cmd, + struct its_collection *sync_col) +{ + its_encode_cmd(sync_cmd, GITS_CMD_SYNC); + its_encode_target(sync_cmd, sync_col->target_address); + + its_fixup_cmd(sync_cmd); +} + +static BUILD_SINGLE_CMD_FUNC(its_send_single_command, its_cmd_builder_t, + struct its_collection, its_build_sync_cmd) static void its_send_inv(struct its_device *dev, u32 event_id) { |