@@ -91,7 +91,6 @@ struct pcc_chan_reg {
* @cmd_update: PCC register bundle for the command complete update register
* @error: PCC register bundle for the error status register
* @plat_irq: platform interrupt
- * @type: PCC subspace type
* @plat_irq_flags: platform interrupt flags
* @chan_in_use: this flag is used just to check if the interrupt needs
* handling when it is shared. Since only one transfer can occur
@@ -108,7 +107,6 @@ struct pcc_chan_info {
struct pcc_chan_reg cmd_update;
struct pcc_chan_reg error;
int plat_irq;
- u8 type;
unsigned int plat_irq_flags;
bool chan_in_use;
};
@@ -263,7 +261,7 @@ static bool pcc_mbox_cmd_complete_check(struct pcc_chan_info *pchan)
* bit 0 indicates that Platform is sending a notification and OSPM
* needs to respond this interrupt to process this command.
*/
- if (pchan->type == ACPI_PCCT_TYPE_EXT_PCC_SLAVE_SUBSPACE)
+ if (pchan->chan.type == ACPI_PCCT_TYPE_EXT_PCC_SLAVE_SUBSPACE)
return !val;
return !!val;
@@ -284,7 +282,7 @@ static irqreturn_t pcc_mbox_irq(int irq, void *p)
int ret;
pchan = chan->con_priv;
- if (pchan->type == ACPI_PCCT_TYPE_EXT_PCC_MASTER_SUBSPACE &&
+ if (pchan->chan.type == ACPI_PCCT_TYPE_EXT_PCC_MASTER_SUBSPACE &&
!pchan->chan_in_use)
return IRQ_NONE;
@@ -312,7 +310,7 @@ static irqreturn_t pcc_mbox_irq(int irq, void *p)
*
* The PCC master subspace channel clears chan_in_use to free channel.
*/
- if (pchan->type == ACPI_PCCT_TYPE_EXT_PCC_SLAVE_SUBSPACE)
+ if (pchan->chan.type == ACPI_PCCT_TYPE_EXT_PCC_SLAVE_SUBSPACE)
pcc_send_data(chan, NULL);
pchan->chan_in_use = false;
@@ -766,7 +764,7 @@ static int pcc_mbox_probe(struct platform_device *pdev)
pcc_parse_subspace_shmem(pchan, pcct_entry);
- pchan->type = pcct_entry->type;
+ pchan->chan.type = pcct_entry->type;
pcct_entry = (struct acpi_subtable_header *)
((unsigned long) pcct_entry + pcct_entry->length);
}
@@ -16,6 +16,7 @@ struct pcc_mbox_chan {
u32 latency;
u32 max_access_rate;
u16 min_turnaround_time;
+ u8 type;
};
#define MAX_PCC_SUBSPACES 256
As stated in APCI spec, the size of the subspace shared memory region may be different for different types. So it is useful for driver to fill PCC communication space. But the driver used this PCC channel doesn't know what is the subspace type of the channel. So export the PCC subspace type by requesting PCC channel. Signed-off-by: Huisong Li <lihuisong@huawei.com> --- drivers/mailbox/pcc.c | 10 ++++------ include/acpi/pcc.h | 1 + 2 files changed, 5 insertions(+), 6 deletions(-)