-/**********************************************************************************/
-/* Forwad definitions for all pic's */
-/**********************************************************************************/
-
-static void tx4938_irq_cp0_enable(unsigned int irq);
-static void tx4938_irq_cp0_disable(unsigned int irq);
-
-static void tx4938_irq_pic_enable(unsigned int irq);
-static void tx4938_irq_pic_disable(unsigned int irq);
-
-/**********************************************************************************/
-/* Kernel structs for all pic's */
-/**********************************************************************************/
-
-#define TX4938_CP0_NAME "TX4938-CP0"
-static struct irq_chip tx4938_irq_cp0_type = {
- .typename = TX4938_CP0_NAME,
- .ack = tx4938_irq_cp0_disable,
- .mask = tx4938_irq_cp0_disable,
- .mask_ack = tx4938_irq_cp0_disable,
- .unmask = tx4938_irq_cp0_enable,
-};
-
-#define TX4938_PIC_NAME "TX4938-PIC"
-static struct irq_chip tx4938_irq_pic_type = {
- .typename = TX4938_PIC_NAME,
- .ack = tx4938_irq_pic_disable,
- .mask = tx4938_irq_pic_disable,
- .mask_ack = tx4938_irq_pic_disable,
- .unmask = tx4938_irq_pic_enable,
-};
-
-static struct irqaction tx4938_irq_pic_action = {
- .handler = no_action,
- .flags = 0,
- .mask = CPU_MASK_NONE,
- .name = TX4938_PIC_NAME
-};
-
-/**********************************************************************************/
-/* Functions for cp0 */
-/**********************************************************************************/
-
-#define tx4938_irq_cp0_mask(irq) ( 1 << ( irq-TX4938_IRQ_CP0_BEG+8 ) )
-
-static void __init
-tx4938_irq_cp0_init(void)
-{
- int i;
-
- for (i = TX4938_IRQ_CP0_BEG; i <= TX4938_IRQ_CP0_END; i++)
- set_irq_chip_and_handler(i, &tx4938_irq_cp0_type,
- handle_level_irq);
-}
-
-static void
-tx4938_irq_cp0_enable(unsigned int irq)
-{
- set_c0_status(tx4938_irq_cp0_mask(irq));
-}
-
-static void
-tx4938_irq_cp0_disable(unsigned int irq)
-{
- clear_c0_status(tx4938_irq_cp0_mask(irq));
-}
-
-/**********************************************************************************/
-/* Functions for pic */
-/**********************************************************************************/
-
-u32
-tx4938_irq_pic_addr(int irq)
-{
- /* MVMCP -- need to formulize this */
- irq -= TX4938_IRQ_PIC_BEG;
-
- switch (irq) {
- case 17:
- case 16:
- case 1:
- case 0:{
- return (TX4938_MKA(TX4938_IRC_IRLVL0));
- }
- case 19:
- case 18:
- case 3:
- case 2:{
- return (TX4938_MKA(TX4938_IRC_IRLVL1));
- }
- case 21:
- case 20:
- case 5:
- case 4:{
- return (TX4938_MKA(TX4938_IRC_IRLVL2));
- }
- case 23:
- case 22:
- case 7:
- case 6:{
- return (TX4938_MKA(TX4938_IRC_IRLVL3));
- }
- case 25:
- case 24:
- case 9:
- case 8:{
- return (TX4938_MKA(TX4938_IRC_IRLVL4));
- }
- case 27:
- case 26:
- case 11:
- case 10:{
- return (TX4938_MKA(TX4938_IRC_IRLVL5));
- }
- case 29:
- case 28:
- case 13:
- case 12:{
- return (TX4938_MKA(TX4938_IRC_IRLVL6));
- }
- case 31:
- case 30:
- case 15:
- case 14:{
- return (TX4938_MKA(TX4938_IRC_IRLVL7));
- }
- }
-
- return 0;
-}
-
-u32
-tx4938_irq_pic_mask(int irq)
-{
- /* MVMCP -- need to formulize this */
- irq -= TX4938_IRQ_PIC_BEG;
-
- switch (irq) {
- case 31:
- case 29:
- case 27:
- case 25:
- case 23:
- case 21:
- case 19:
- case 17:{
- return (0x07000000);
- }
- case 30:
- case 28:
- case 26:
- case 24:
- case 22:
- case 20:
- case 18:
- case 16:{
- return (0x00070000);
- }
- case 15:
- case 13:
- case 11:
- case 9:
- case 7:
- case 5:
- case 3:
- case 1:{
- return (0x00000700);
- }
- case 14:
- case 12:
- case 10:
- case 8:
- case 6:
- case 4:
- case 2:
- case 0:{
- return (0x00000007);
- }
- }
- return 0x00000000;
-}
-
-static void
-tx4938_irq_pic_modify(unsigned pic_reg, unsigned clr_bits, unsigned set_bits)
-{
- unsigned long val = 0;
-
- val = TX4938_RD(pic_reg);
- val &= (~clr_bits);
- val |= (set_bits);
- TX4938_WR(pic_reg, val);
- mmiowb();
- TX4938_RD(pic_reg);
-}
-
-static void __init
-tx4938_irq_pic_init(void)
-{
- int i;
-
- for (i = TX4938_IRQ_PIC_BEG; i <= TX4938_IRQ_PIC_END; i++)
- set_irq_chip_and_handler(i, &tx4938_irq_pic_type,
- handle_level_irq);
-
- setup_irq(TX4938_IRQ_NEST_PIC_ON_CP0, &tx4938_irq_pic_action);
-
- TX4938_WR(0xff1ff640, 0x6); /* irq level mask -- only accept hightest */
- TX4938_WR(0xff1ff600, TX4938_RD(0xff1ff600) | 0x1); /* irq enable */
-}
-
-static void
-tx4938_irq_pic_enable(unsigned int irq)
-{
- tx4938_irq_pic_modify(tx4938_irq_pic_addr(irq), 0,
- tx4938_irq_pic_mask(irq));
-}
-
-static void
-tx4938_irq_pic_disable(unsigned int irq)
-{
- tx4938_irq_pic_modify(tx4938_irq_pic_addr(irq),
- tx4938_irq_pic_mask(irq), 0);
-}
-
-/**********************************************************************************/
-/* Main init functions */
-/**********************************************************************************/
-