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13#include <linux/kernel.h>
14#include <linux/pci.h>
15#include <linux/init.h>
16
17#include <asm/io.h>
18#include <asm/prom.h>
19#include <asm/pci-bridge.h>
20#include <asm/grackle.h>
21
22#define GRACKLE_CFA(b, d, o) (0x80 | ((b) << 8) | ((d) << 16) \
23 | (((o) & ~3) << 24))
24
25#define GRACKLE_PICR1_STG 0x00000040
26#define GRACKLE_PICR1_LOOPSNOOP 0x00000010
27
28
29
30static inline void grackle_set_stg(struct pci_controller* bp, int enable)
31{
32 unsigned int val;
33
34 out_be32(bp->cfg_addr, GRACKLE_CFA(0, 0, 0xa8));
35 val = in_le32(bp->cfg_data);
36 val = enable? (val | GRACKLE_PICR1_STG) :
37 (val & ~GRACKLE_PICR1_STG);
38 out_be32(bp->cfg_addr, GRACKLE_CFA(0, 0, 0xa8));
39 out_le32(bp->cfg_data, val);
40 (void)in_le32(bp->cfg_data);
41}
42
43static inline void grackle_set_loop_snoop(struct pci_controller *bp, int enable)
44{
45 unsigned int val;
46
47 out_be32(bp->cfg_addr, GRACKLE_CFA(0, 0, 0xa8));
48 val = in_le32(bp->cfg_data);
49 val = enable? (val | GRACKLE_PICR1_LOOPSNOOP) :
50 (val & ~GRACKLE_PICR1_LOOPSNOOP);
51 out_be32(bp->cfg_addr, GRACKLE_CFA(0, 0, 0xa8));
52 out_le32(bp->cfg_data, val);
53 (void)in_le32(bp->cfg_data);
54}
55
56void __init setup_grackle(struct pci_controller *hose)
57{
58 setup_indirect_pci(hose, 0xfec00000, 0xfee00000, 0);
59 if (of_machine_is_compatible("PowerMac1,1"))
60 pci_add_flags(PCI_REASSIGN_ALL_BUS);
61 if (of_machine_is_compatible("AAPL,PowerBook1998"))
62 grackle_set_loop_snoop(hose, 1);
63#if 0
64 grackle_set_stg(hose, 1);
65#endif
66}
67