* @db: PCC register bundle for the doorbell register
* @plat_irq_ack: PCC register bundle for the platform interrupt acknowledge
* register
+ * @cmd_complete: PCC register bundle for the command complete check register
+ * @cmd_update: PCC register bundle for the command complete update register
+ * @error: PCC register bundle for the error status register
* @plat_irq: platform interrupt
*/
struct pcc_chan_info {
struct pcc_mbox_chan chan;
struct pcc_chan_reg db;
struct pcc_chan_reg plat_irq_ack;
+ struct pcc_chan_reg cmd_complete;
+ struct pcc_chan_reg cmd_update;
+ struct pcc_chan_reg error;
int plat_irq;
};
{
struct pcc_chan_info *pchan;
struct mbox_chan *chan = p;
+ u64 val;
+ int ret;
pchan = chan->con_priv;
+ ret = pcc_chan_reg_read(&pchan->cmd_complete, &val);
+ if (ret)
+ return IRQ_NONE;
+
+ val &= pchan->cmd_complete.status_mask;
+ if (!val)
+ return IRQ_NONE;
+
+ ret = pcc_chan_reg_read(&pchan->error, &val);
+ if (ret)
+ return IRQ_NONE;
+ val &= pchan->error.status_mask;
+ if (val) {
+ val &= ~pchan->error.status_mask;
+ pcc_chan_reg_write(&pchan->error, val);
+ return IRQ_NONE;
+ }
+
if (pcc_chan_reg_read_modify_write(&pchan->plat_irq_ack))
return IRQ_NONE;
*/
static int pcc_send_data(struct mbox_chan *chan, void *data)
{
+ int ret;
struct pcc_chan_info *pchan = chan->con_priv;
+ ret = pcc_chan_reg_read_modify_write(&pchan->cmd_update);
+ if (ret)
+ return ret;
+
return pcc_chan_reg_read_modify_write(&pchan->db);
}
pcct2_ss->ack_preserve_mask,
pcct2_ss->ack_write_mask, 0,
"PLAT IRQ ACK");
+
+ } else if (pcct_ss->header.type == ACPI_PCCT_TYPE_EXT_PCC_MASTER_SUBSPACE ||
+ pcct_ss->header.type == ACPI_PCCT_TYPE_EXT_PCC_SLAVE_SUBSPACE) {
+ struct acpi_pcct_ext_pcc_master *pcct_ext = (void *)pcct_ss;
+
+ ret = pcc_chan_reg_init(&pchan->plat_irq_ack,
+ &pcct_ext->platform_ack_register,
+ pcct_ext->ack_preserve_mask,
+ pcct_ext->ack_set_mask, 0,
+ "PLAT IRQ ACK");
}
return ret;
{
int ret = 0;
- struct acpi_pcct_subspace *pcct_ss;
-
- pcct_ss = (struct acpi_pcct_subspace *)pcct_entry;
-
- ret = pcc_chan_reg_init(&pchan->db,
- &pcct_ss->doorbell_register,
- pcct_ss->preserve_mask,
- pcct_ss->write_mask, 0, "Doorbell");
+ if (pcct_entry->type <= ACPI_PCCT_TYPE_HW_REDUCED_SUBSPACE_TYPE2) {
+ struct acpi_pcct_subspace *pcct_ss;
+
+ pcct_ss = (struct acpi_pcct_subspace *)pcct_entry;
+
+ ret = pcc_chan_reg_init(&pchan->db,
+ &pcct_ss->doorbell_register,
+ pcct_ss->preserve_mask,
+ pcct_ss->write_mask, 0, "Doorbell");
+
+ } else {
+ struct acpi_pcct_ext_pcc_master *pcct_ext;
+
+ pcct_ext = (struct acpi_pcct_ext_pcc_master *)pcct_entry;
+
+ ret = pcc_chan_reg_init(&pchan->db,
+ &pcct_ext->doorbell_register,
+ pcct_ext->preserve_mask,
+ pcct_ext->write_mask, 0, "Doorbell");
+ if (ret)
+ return ret;
+
+ ret = pcc_chan_reg_init(&pchan->cmd_complete,
+ &pcct_ext->cmd_complete_register,
+ 0, 0, pcct_ext->cmd_complete_mask,
+ "Command Complete Check");
+ if (ret)
+ return ret;
+
+ ret = pcc_chan_reg_init(&pchan->cmd_update,
+ &pcct_ext->cmd_update_register,
+ pcct_ext->cmd_update_preserve_mask,
+ pcct_ext->cmd_update_set_mask, 0,
+ "Command Complete Update");
+ if (ret)
+ return ret;
+
+ ret = pcc_chan_reg_init(&pchan->error,
+ &pcct_ext->error_status_register,
+ 0, 0, pcct_ext->error_status_mask,
+ "Error Status");
+ }
return ret;
}
static void pcc_parse_subspace_shmem(struct pcc_chan_info *pchan,
struct acpi_subtable_header *pcct_entry)
{
- struct acpi_pcct_subspace *pcct_ss;
-
- pcct_ss = (struct acpi_pcct_subspace *)pcct_entry;
-
- pchan->chan.shmem_base_addr = pcct_ss->base_address;
- pchan->chan.shmem_size = pcct_ss->length;
- pchan->chan.latency = pcct_ss->latency;
- pchan->chan.max_access_rate = pcct_ss->max_access_rate;
- pchan->chan.min_turnaround_time = pcct_ss->min_turnaround_time;
+ if (pcct_entry->type <= ACPI_PCCT_TYPE_HW_REDUCED_SUBSPACE_TYPE2) {
+ struct acpi_pcct_subspace *pcct_ss =
+ (struct acpi_pcct_subspace *)pcct_entry;
+
+ pchan->chan.shmem_base_addr = pcct_ss->base_address;
+ pchan->chan.shmem_size = pcct_ss->length;
+ pchan->chan.latency = pcct_ss->latency;
+ pchan->chan.max_access_rate = pcct_ss->max_access_rate;
+ pchan->chan.min_turnaround_time = pcct_ss->min_turnaround_time;
+ } else {
+ struct acpi_pcct_ext_pcc_master *pcct_ext =
+ (struct acpi_pcct_ext_pcc_master *)pcct_entry;
+
+ pchan->chan.shmem_base_addr = pcct_ext->base_address;
+ pchan->chan.shmem_size = pcct_ext->length;
+ pchan->chan.latency = pcct_ext->latency;
+ pchan->chan.max_access_rate = pcct_ext->max_access_rate;
+ pchan->chan.min_turnaround_time = pcct_ext->min_turnaround_time;
+ }
}
/**
pcc_mbox_channels[i].con_priv = pchan;
pchan->chan.mchan = &pcc_mbox_channels[i];
+ if (pcct_entry->type == ACPI_PCCT_TYPE_EXT_PCC_SLAVE_SUBSPACE &&
+ !pcc_mbox_ctrl.txdone_irq) {
+ pr_err("Plaform Interrupt flag must be set to 1");
+ rc = -EINVAL;
+ goto err;
+ }
+
if (pcc_mbox_ctrl.txdone_irq) {
rc = pcc_parse_subspace_irq(pchan, pcct_entry);
if (rc < 0)