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| Rev | Author | Line No. | Line |
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| 3647 | jermar | 1 | /* |
| 2 | * Copyright (c) 2008 Jakub Jermar |
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| 3 | * All rights reserved. |
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| 4 | * |
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| 5 | * Redistribution and use in source and binary forms, with or without |
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| 6 | * modification, are permitted provided that the following conditions |
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| 7 | * are met: |
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| 8 | * |
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| 9 | * - Redistributions of source code must retain the above copyright |
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| 10 | * notice, this list of conditions and the following disclaimer. |
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| 11 | * - Redistributions in binary form must reproduce the above copyright |
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| 12 | * notice, this list of conditions and the following disclaimer in the |
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| 13 | * documentation and/or other materials provided with the distribution. |
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| 14 | * - The name of the author may not be used to endorse or promote products |
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| 15 | * derived from this software without specific prior written permission. |
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| 16 | * |
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 27 | */ |
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| 28 | |||
| 29 | /** @addtogroup sparc64 |
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| 30 | * @{ |
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| 31 | */ |
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| 32 | /** |
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| 33 | * @file |
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| 34 | * @brief Driver for the UPA to PCI bridge (Psycho). |
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| 35 | */ |
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| 36 | |||
| 37 | #include <arch/drivers/psycho.h> |
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| 38 | #include <arch/trap/interrupt.h> |
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| 39 | #include <mm/page.h> |
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| 40 | #include <mm/slab.h> |
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| 41 | #include <arch/types.h> |
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| 42 | #include <genarch/ofw/ofw_tree.h> |
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| 3649 | jermar | 43 | #include <byteorder.h> |
| 3647 | jermar | 44 | |
| 3649 | jermar | 45 | #define PSYCHO_INTERNAL_REG 2 |
| 3647 | jermar | 46 | |
| 3649 | jermar | 47 | #define PSYCHO_OBIO_IMR_BASE (0x1000 / sizeof(uint64_t)) |
| 48 | #define PSYCHO_OBIO_IMR(ino) (PSYCHO_OBIO_IMR_BASE + ((ino) & INO_MASK)) |
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| 49 | |||
| 50 | #define PSYCHO_OBIO_CIR_BASE (0x1800 / sizeof(uint64_t)) |
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| 51 | #define PSYCHO_OBIO_CIR(ino) (PSYCHO_OBIO_CIR_BASE + ((ino) & INO_MASK)) |
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| 52 | |||
| 3647 | jermar | 53 | psycho_t *psycho_a = NULL; |
| 54 | psycho_t *psycho_b = NULL; |
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| 55 | |||
| 56 | psycho_t *psycho_init(ofw_tree_node_t *node) |
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| 57 | { |
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| 58 | psycho_t *psycho; |
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| 59 | ofw_tree_property_t *prop; |
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| 60 | |||
| 61 | prop = ofw_tree_getprop(node, "reg"); |
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| 62 | |||
| 63 | if (!prop || !prop->value) |
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| 64 | return NULL; |
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| 3649 | jermar | 65 | |
| 66 | count_t regs = prop->size / sizeof(ofw_upa_reg_t); |
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| 67 | if (regs < PSYCHO_INTERNAL_REG + 1) |
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| 68 | return NULL; |
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| 3647 | jermar | 69 | |
| 3649 | jermar | 70 | ofw_upa_reg_t *reg = |
| 71 | &((ofw_upa_reg_t *) prop->value)[PSYCHO_INTERNAL_REG]; |
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| 3647 | jermar | 72 | |
| 73 | uintptr_t paddr; |
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| 74 | if (!ofw_upa_apply_ranges(node->parent, reg, &paddr)) |
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| 75 | return NULL; |
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| 76 | |||
| 77 | psycho = (psycho_t *) malloc(sizeof(psycho_t), FRAME_ATOMIC); |
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| 78 | if (!psycho) |
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| 79 | return NULL; |
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| 80 | |||
| 81 | psycho->regs = (uint64_t *) hw_map(paddr, reg->size); |
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| 82 | |||
| 83 | return psycho; |
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| 84 | } |
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| 85 | |||
| 86 | void psycho_enable_interrupt(psycho_t *psycho, int inr) |
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| 87 | { |
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| 3649 | jermar | 88 | int ino = inr & ~IGN_MASK; |
| 89 | uint64_t imr = psycho->regs[PSYCHO_OBIO_IMR(ino)]; |
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| 90 | imr |= host2uint64_t_le(IMAP_V_MASK); |
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| 91 | psycho->regs[PSYCHO_OBIO_IMR(ino)] = imr; |
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| 3647 | jermar | 92 | } |
| 93 | |||
| 94 | void psycho_clear_interrupt(psycho_t *psycho, int inr) |
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| 95 | { |
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| 3649 | jermar | 96 | int ino = inr & ~IGN_MASK; |
| 97 | uint64_t idle = host2uint64_t_le(0); |
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| 98 | psycho->regs[PSYCHO_OBIO_CIR(ino)] = idle; |
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| 3647 | jermar | 99 | } |
| 100 | |||
| 101 | /** @} |
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| 102 | */ |