projects / OpenSPARC-T2-SAM / blame
| Commit | Line | Data |
|---|---|---|
| 920dae64 AT |
1 | /* |
| 2 | * Copyright 2007 Sun Microsystems, Inc. All rights reserved. | |
| 3 | * Use is subject to license terms. | |
| 4 | */ | |
| 5 | ||
| 6 | ||
| 7 | #ifdef T1_FPGA_SNET | |
| 8 | ||
| 9 | #include <sys/asm_linkage.h> | |
| 10 | #include <hypervisor.h> | |
| 11 | #include <asi.h> | |
| 12 | #include <mmu.h> | |
| 13 | ||
| 14 | #include <guest.h> | |
| 15 | #include <offsets.h> | |
| 16 | #include <util.h> | |
| 17 | #include <vdev_snet.h> | |
| 18 | #include <vdev_intr.h> | |
| 19 | ||
| 20 | ||
| 21 | #define PKT_BUF_ADDR_ALIGNMENT 8 | |
| 22 | ||
| 23 | ||
| 24 | /* | |
| 25 | * Propagate an interrupt received from an snet device to the | |
| 26 | * snet device driver. | |
| 27 | */ | |
| 28 | ENTRY_NP(snet_mondo) | |
| 29 | GUEST_STRUCT(%g2) | |
| 30 | set GUEST_SNET, %g3 | |
| 31 | add %g2, %g3, %g3 | |
| 32 | ldx [%g3 + SNET_INO], %g3 | |
| 33 | GUEST2VDEVSTATE(%g2, %g1) | |
| 34 | !! %g1 = &guestp->vdev_state | |
| 35 | VINO2MAPREG(%g1, %g3, %g2) | |
| 36 | mov %g2, %g1 | |
| 37 | brz,pt %g0, vdev_intr_generate | |
| 38 | rd %pc, %g7 | |
| 39 | retry | |
| 40 | SET_SIZE(snet_mondo) | |
| 41 | ||
| 42 | /* | |
| 43 | * The hypervisor simply provides a mechanism for the device driver | |
| 44 | * to communicate with the snet device. The hypervisor doesn't | |
| 45 | * interpret the data. | |
| 46 | * | |
| 47 | * For performance reasons, ldx and stx are used in hcall_snet_read and | |
| 48 | * hcall_snet_write functions. Therefore the source and target buffer | |
| 49 | * must be double word aligned and also the size of the buffers must | |
| 50 | * be double word aligned. | |
| 51 | * | |
| 52 | */ | |
| 53 | ||
| 54 | /* | |
| 55 | * snet read | |
| 56 | * | |
| 57 | * arg1 target real address (%o0) | |
| 58 | * arg2 size (%o1) | |
| 59 | * -- | |
| 60 | * ret0 status (%o0) | |
| 61 | * ret1 size (%o1) | |
| 62 | * | |
| 63 | */ | |
| 64 | ENTRY_NP(hcall_snet_read) | |
| 65 | ||
| 66 | btst PKT_BUF_ADDR_ALIGNMENT - 1, %o0 | |
| 67 | bnz,pn %xcc, herr_badalign | |
| 68 | nop | |
| 69 | ||
| 70 | GUEST_STRUCT(%g1) | |
| 71 | add %o1, 0x7, %g4 | |
| 72 | andn %g4, 0x7, %g4 | |
| 73 | RA2PA_RANGE_CONV_UNK_SIZE(%g1, %o0, %g4, herr_noraddr, %g3, %g2) | |
| 74 | ! %g2 paddr | |
| 75 | ||
| 76 | set GUEST_SNET, %g3 | |
| 77 | add %g1, %g3, %g1 | |
| 78 | ldx [%g1 + SNET_PA], %g1 | |
| 79 | ||
| 80 | 1: | |
| 81 | ldx [%g1], %g3 | |
| 82 | stx %g3, [%g2] | |
| 83 | subcc %g4, 8, %g4 | |
| 84 | brnz,pt %g4, 1b | |
| 85 | add %g2, 8, %g2 | |
| 86 | ||
| 87 | HCALL_RET(EOK) | |
| 88 | SET_SIZE(hcall_snet_read) | |
| 89 | ||
| 90 | /* | |
| 91 | * snet write | |
| 92 | * | |
| 93 | * arg1 source real address (%o0) | |
| 94 | * arg2 size (%o1) | |
| 95 | * -- | |
| 96 | * ret0 status (%o0) | |
| 97 | * ret1 size (%o1) | |
| 98 | */ | |
| 99 | ENTRY_NP(hcall_snet_write) | |
| 100 | ||
| 101 | btst PKT_BUF_ADDR_ALIGNMENT - 1, %o0 | |
| 102 | bnz,pn %xcc, herr_badalign | |
| 103 | nop | |
| 104 | ||
| 105 | GUEST_STRUCT(%g1) | |
| 106 | add %o1, 0x7, %g4 | |
| 107 | andn %g4, 0x7, %g4 | |
| 108 | RA2PA_RANGE_CONV_UNK_SIZE(%g1, %o0, %g4, herr_noraddr, %g3, %g2) | |
| 109 | ! %g2 paddr | |
| 110 | ||
| 111 | set GUEST_SNET, %g3 | |
| 112 | add %g1, %g3, %g1 | |
| 113 | ldx [%g1 + SNET_PA], %g1 | |
| 114 | ||
| 115 | 1: | |
| 116 | ldx [%g2], %g3 | |
| 117 | stx %g3, [%g1] | |
| 118 | subcc %g4, 8, %g4 | |
| 119 | brnz,pt %g4, 1b | |
| 120 | add %g2, 8, %g2 | |
| 121 | ||
| 122 | HCALL_RET(EOK) | |
| 123 | SET_SIZE(hcall_snet_write) | |
| 124 | ||
| 125 | #endif /* ifdef T1_FPGA_SNET */ |