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/*
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* QEMU JAZZ RC4030 chipset
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*
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* Copyright (c) 2007-2008 Hervé Poussineau
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "hw.h" |
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#include "qemu-timer.h" |
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//#define DEBUG_RC4030
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#ifdef DEBUG_RC4030
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static const char* irq_names[] = { "parallel", "floppy", "sound", "video", |
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"network", "scsi", "keyboard", "mouse", "serial0", "serial1" }; |
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#endif
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typedef struct rc4030State |
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{ |
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uint32_t config; /* 0x0000: RC4030 config register */
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uint32_t invalid_address_register; /* 0x0010: Invalid Address register */
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|
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/* DMA */
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uint32_t dma_regs[8][4]; |
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uint32_t dma_tl_base; /* 0x0018: DMA transl. table base */
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uint32_t dma_tl_limit; /* 0x0020: DMA transl. table limit */
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/* cache */
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uint32_t remote_failed_address; /* 0x0038: Remote Failed Address */
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uint32_t memory_failed_address; /* 0x0040: Memory Failed Address */
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uint32_t cache_ptag; /* 0x0048: I/O Cache Physical Tag */
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uint32_t cache_ltag; /* 0x0050: I/O Cache Logical Tag */
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uint32_t cache_bmask; /* 0x0058: I/O Cache Byte Mask */
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uint32_t cache_bwin; /* 0x0060: I/O Cache Buffer Window */
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uint32_t offset208; |
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uint32_t offset210; |
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uint32_t nvram_protect; /* 0x0220: NV ram protect register */
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uint32_t offset238; |
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uint32_t rem_speed[15];
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uint32_t imr_jazz; /* Local bus int enable mask */
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uint32_t isr_jazz; /* Local bus int source */
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/* timer */
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QEMUTimer *periodic_timer; |
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uint32_t itr; /* Interval timer reload */
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uint32_t dummy32; |
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qemu_irq timer_irq; |
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qemu_irq jazz_bus_irq; |
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} rc4030State; |
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|
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static void set_next_tick(rc4030State *s) |
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{ |
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qemu_irq_lower(s->timer_irq); |
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uint32_t tm_hz; |
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tm_hz = 1000 / (s->itr + 1); |
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qemu_mod_timer(s->periodic_timer, qemu_get_clock(vm_clock) + ticks_per_sec / tm_hz); |
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} |
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|
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/* called for accesses to rc4030 */
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static uint32_t rc4030_readl(void *opaque, target_phys_addr_t addr) |
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{ |
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rc4030State *s = opaque; |
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uint32_t val; |
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addr &= 0x3fff;
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switch (addr & ~0x3) { |
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/* Global config register */
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case 0x0000: |
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val = s->config; |
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break;
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/* Invalid Address register */
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case 0x0010: |
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val = s->invalid_address_register; |
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break;
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/* DMA transl. table base */
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case 0x0018: |
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val = s->dma_tl_base; |
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break;
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/* DMA transl. table limit */
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case 0x0020: |
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val = s->dma_tl_limit; |
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break;
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/* Remote Failed Address */
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case 0x0038: |
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val = s->remote_failed_address; |
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break;
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/* Memory Failed Address */
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case 0x0040: |
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val = s->memory_failed_address; |
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break;
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/* I/O Cache Byte Mask */
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case 0x0058: |
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val = s->cache_bmask; |
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/* HACK */
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if (s->cache_bmask == (uint32_t)-1) |
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s->cache_bmask = 0;
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break;
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/* Remote Speed Registers */
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case 0x0070: |
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case 0x0078: |
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case 0x0080: |
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case 0x0088: |
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case 0x0090: |
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case 0x0098: |
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case 0x00a0: |
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case 0x00a8: |
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case 0x00b0: |
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case 0x00b8: |
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case 0x00c0: |
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case 0x00c8: |
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case 0x00d0: |
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case 0x00d8: |
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case 0x00e0: |
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val = s->rem_speed[(addr - 0x0070) >> 3]; |
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break;
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/* DMA channel base address */
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case 0x0100: |
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case 0x0108: |
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case 0x0110: |
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case 0x0118: |
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case 0x0120: |
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case 0x0128: |
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case 0x0130: |
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case 0x0138: |
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case 0x0140: |
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case 0x0148: |
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case 0x0150: |
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case 0x0158: |
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case 0x0160: |
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case 0x0168: |
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case 0x0170: |
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case 0x0178: |
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case 0x0180: |
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case 0x0188: |
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case 0x0190: |
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case 0x0198: |
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case 0x01a0: |
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case 0x01a8: |
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case 0x01b0: |
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case 0x01b8: |
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case 0x01c0: |
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case 0x01c8: |
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case 0x01d0: |
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case 0x01d8: |
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case 0x01e0: |
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case 0x1e8: |
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case 0x01f0: |
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case 0x01f8: |
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{ |
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int entry = (addr - 0x0100) >> 5; |
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int idx = (addr & 0x1f) >> 3; |
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val = s->dma_regs[entry][idx]; |
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} |
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break;
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/* Offset 0x0208 */
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case 0x0208: |
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val = s->offset208; |
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break;
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/* Offset 0x0210 */
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case 0x0210: |
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val = s->offset210; |
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break;
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/* NV ram protect register */
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case 0x0220: |
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val = s->nvram_protect; |
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break;
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/* Interval timer count */
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case 0x0230: |
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val = s->dummy32; |
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qemu_irq_lower(s->timer_irq); |
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break;
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/* Offset 0x0238 */
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case 0x0238: |
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val = s->offset238; |
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break;
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default:
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#ifdef DEBUG_RC4030
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printf("rc4030: invalid read [" TARGET_FMT_lx "]\n", addr); |
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#endif
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val = 0;
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break;
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} |
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#ifdef DEBUG_RC4030
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if ((addr & ~3) != 0x230) |
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printf("rc4030: read 0x%02x at " TARGET_FMT_lx "\n", val, addr); |
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#endif
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return val;
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} |
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static uint32_t rc4030_readw(void *opaque, target_phys_addr_t addr) |
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{ |
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uint32_t v = rc4030_readl(opaque, addr & ~0x3);
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if (addr & 0x2) |
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return v >> 16; |
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else
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return v & 0xffff; |
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} |
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static uint32_t rc4030_readb(void *opaque, target_phys_addr_t addr) |
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{ |
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uint32_t v = rc4030_readl(opaque, addr & ~0x3);
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return (v >> (8 * (addr & 0x3))) & 0xff; |
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} |
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static void rc4030_writel(void *opaque, target_phys_addr_t addr, uint32_t val) |
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{ |
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rc4030State *s = opaque; |
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addr &= 0x3fff;
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#ifdef DEBUG_RC4030
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printf("rc4030: write 0x%02x at " TARGET_FMT_lx "\n", val, addr); |
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#endif
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switch (addr & ~0x3) { |
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/* Global config register */
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case 0x0000: |
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s->config = val; |
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break;
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/* DMA transl. table base */
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case 0x0018: |
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s->dma_tl_base = val; |
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break;
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/* DMA transl. table limit */
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case 0x0020: |
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s->dma_tl_limit = val; |
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break;
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/* I/O Cache Physical Tag */
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case 0x0048: |
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s->cache_ptag = val; |
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break;
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/* I/O Cache Logical Tag */
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case 0x0050: |
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s->cache_ltag = val; |
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break;
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/* I/O Cache Byte Mask */
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case 0x0058: |
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s->cache_bmask |= val; /* HACK */
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break;
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/* I/O Cache Buffer Window */
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case 0x0060: |
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s->cache_bwin = val; |
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/* HACK */
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if (s->cache_ltag == 0x80000001 && s->cache_bmask == 0xf0f0f0f) { |
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target_phys_addr_t dests[] = { 4, 0, 8, 0x10 }; |
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static int current = 0; |
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target_phys_addr_t dest = 0 + dests[current];
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uint8_t buf; |
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current = (current + 1) % (sizeof(dests)/sizeof(dests[0])); |
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buf = s->cache_bwin - 1;
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cpu_physical_memory_rw(dest, &buf, 1, 1); |
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} |
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break;
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/* Remote Speed Registers */
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case 0x0070: |
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case 0x0078: |
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case 0x0080: |
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case 0x0088: |
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case 0x0090: |
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case 0x0098: |
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case 0x00a0: |
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case 0x00a8: |
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case 0x00b0: |
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case 0x00b8: |
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case 0x00c0: |
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case 0x00c8: |
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case 0x00d0: |
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case 0x00d8: |
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case 0x00e0: |
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s->rem_speed[(addr - 0x0070) >> 3] = val; |
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break;
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/* DMA channel base address */
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case 0x0100: |
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case 0x0108: |
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case 0x0110: |
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case 0x0118: |
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case 0x0120: |
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case 0x0128: |
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case 0x0130: |
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case 0x0138: |
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case 0x0140: |
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case 0x0148: |
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case 0x0150: |
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case 0x0158: |
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case 0x0160: |
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case 0x0168: |
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case 0x0170: |
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case 0x0178: |
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case 0x0180: |
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case 0x0188: |
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case 0x0190: |
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case 0x0198: |
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case 0x01a0: |
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case 0x01a8: |
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case 0x01b0: |
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case 0x01b8: |
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case 0x01c0: |
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case 0x01c8: |
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case 0x01d0: |
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case 0x01d8: |
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case 0x01e0: |
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case 0x1e8: |
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case 0x01f0: |
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case 0x01f8: |
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{ |
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int entry = (addr - 0x0100) >> 5; |
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int idx = (addr & 0x1f) >> 3; |
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s->dma_regs[entry][idx] = val; |
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} |
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break;
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/* Offset 0x0210 */
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case 0x0210: |
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s->offset210 = val; |
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break;
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/* Interval timer reload */
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case 0x0228: |
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s->itr = val; |
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qemu_irq_lower(s->timer_irq); |
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set_next_tick(s); |
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break;
|
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default:
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#ifdef DEBUG_RC4030
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printf("rc4030: invalid write of 0x%02x at [" TARGET_FMT_lx "]\n", val, addr); |
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#endif
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break;
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} |
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} |
350 |
|
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static void rc4030_writew(void *opaque, target_phys_addr_t addr, uint32_t val) |
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{ |
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uint32_t old_val = rc4030_readl(opaque, addr & ~0x3);
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|
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if (addr & 0x2) |
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val = (val << 16) | (old_val & 0x0000ffff); |
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else
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val = val | (old_val & 0xffff0000);
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rc4030_writel(opaque, addr & ~0x3, val);
|
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} |
361 |
|
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static void rc4030_writeb(void *opaque, target_phys_addr_t addr, uint32_t val) |
363 |
{ |
364 |
uint32_t old_val = rc4030_readl(opaque, addr & ~0x3);
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365 |
|
366 |
switch (addr & 3) { |
367 |
case 0: |
368 |
val = val | (old_val & 0xffffff00);
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break;
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370 |
case 1: |
371 |
val = (val << 8) | (old_val & 0xffff00ff); |
372 |
break;
|
373 |
case 2: |
374 |
val = (val << 16) | (old_val & 0xff00ffff); |
375 |
break;
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376 |
case 3: |
377 |
val = (val << 24) | (old_val & 0x00ffffff); |
378 |
break;
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379 |
} |
380 |
rc4030_writel(opaque, addr & ~0x3, val);
|
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} |
382 |
|
383 |
static CPUReadMemoryFunc *rc4030_read[3] = { |
384 |
rc4030_readb, |
385 |
rc4030_readw, |
386 |
rc4030_readl, |
387 |
}; |
388 |
|
389 |
static CPUWriteMemoryFunc *rc4030_write[3] = { |
390 |
rc4030_writeb, |
391 |
rc4030_writew, |
392 |
rc4030_writel, |
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}; |
394 |
|
395 |
static void update_jazz_irq(rc4030State *s) |
396 |
{ |
397 |
uint16_t pending; |
398 |
|
399 |
pending = s->isr_jazz & s->imr_jazz; |
400 |
|
401 |
#ifdef DEBUG_RC4030
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402 |
if (s->isr_jazz != 0) { |
403 |
uint32_t irq = 0;
|
404 |
printf("jazz pending:");
|
405 |
for (irq = 0; irq < sizeof(irq_names)/sizeof(irq_names[0]); irq++) { |
406 |
if (s->isr_jazz & (1 << irq)) { |
407 |
printf(" %s", irq_names[irq]);
|
408 |
if (!(s->imr_jazz & (1 << irq))) { |
409 |
printf("(ignored)");
|
410 |
} |
411 |
} |
412 |
} |
413 |
printf("\n");
|
414 |
} |
415 |
#endif
|
416 |
|
417 |
if (pending != 0) |
418 |
qemu_irq_raise(s->jazz_bus_irq); |
419 |
else
|
420 |
qemu_irq_lower(s->jazz_bus_irq); |
421 |
} |
422 |
|
423 |
static void rc4030_irq_jazz_request(void *opaque, int irq, int level) |
424 |
{ |
425 |
rc4030State *s = opaque; |
426 |
|
427 |
if (level) {
|
428 |
s->isr_jazz |= 1 << irq;
|
429 |
} else {
|
430 |
s->isr_jazz &= ~(1 << irq);
|
431 |
} |
432 |
|
433 |
update_jazz_irq(s); |
434 |
} |
435 |
|
436 |
static void rc4030_periodic_timer(void *opaque) |
437 |
{ |
438 |
rc4030State *s = opaque; |
439 |
|
440 |
set_next_tick(s); |
441 |
qemu_irq_raise(s->timer_irq); |
442 |
} |
443 |
|
444 |
static uint32_t int_readb(void *opaque, target_phys_addr_t addr) |
445 |
{ |
446 |
rc4030State *s = opaque; |
447 |
uint32_t val; |
448 |
uint32_t irq; |
449 |
addr &= 0xfff;
|
450 |
|
451 |
switch (addr) {
|
452 |
case 0x00: { |
453 |
/* Local bus int source */
|
454 |
uint32_t pending = s->isr_jazz & s->imr_jazz; |
455 |
val = 0;
|
456 |
irq = 0;
|
457 |
while (pending) {
|
458 |
if (pending & 1) { |
459 |
//printf("returning irq %s\n", irq_names[irq]);
|
460 |
val = (irq + 1) << 2; |
461 |
break;
|
462 |
} |
463 |
irq++; |
464 |
pending >>= 1;
|
465 |
} |
466 |
break;
|
467 |
} |
468 |
default:
|
469 |
#ifdef DEBUG_RC4030
|
470 |
printf("rc4030: (interrupt controller) invalid read [" TARGET_FMT_lx "]\n", addr); |
471 |
#endif
|
472 |
val = 0;
|
473 |
} |
474 |
|
475 |
#ifdef DEBUG_RC4030
|
476 |
printf("rc4030: (interrupt controller) read 0x%02x at " TARGET_FMT_lx "\n", val, addr); |
477 |
#endif
|
478 |
|
479 |
return val;
|
480 |
} |
481 |
|
482 |
static uint32_t int_readw(void *opaque, target_phys_addr_t addr) |
483 |
{ |
484 |
uint32_t v; |
485 |
v = int_readb(opaque, addr); |
486 |
v |= int_readb(opaque, addr + 1) << 8; |
487 |
return v;
|
488 |
} |
489 |
|
490 |
static uint32_t int_readl(void *opaque, target_phys_addr_t addr) |
491 |
{ |
492 |
uint32_t v; |
493 |
v = int_readb(opaque, addr); |
494 |
v |= int_readb(opaque, addr + 1) << 8; |
495 |
v |= int_readb(opaque, addr + 2) << 16; |
496 |
v |= int_readb(opaque, addr + 3) << 24; |
497 |
return v;
|
498 |
} |
499 |
|
500 |
static void int_writeb(void *opaque, target_phys_addr_t addr, uint32_t val) |
501 |
{ |
502 |
rc4030State *s = opaque; |
503 |
addr &= 0xfff;
|
504 |
|
505 |
#ifdef DEBUG_RC4030
|
506 |
printf("rc4030: (interrupt controller) write 0x%02x at " TARGET_FMT_lx "\n", val, addr); |
507 |
#endif
|
508 |
|
509 |
switch (addr) {
|
510 |
/* Local bus int enable mask */
|
511 |
case 0x02: |
512 |
s->imr_jazz = (s->imr_jazz & 0xff00) | (val << 0); update_jazz_irq(s); |
513 |
break;
|
514 |
case 0x03: |
515 |
s->imr_jazz = (s->imr_jazz & 0x00ff) | (val << 8); update_jazz_irq(s); |
516 |
break;
|
517 |
default:
|
518 |
#ifdef DEBUG_RC4030
|
519 |
printf("rc4030: (interrupt controller) invalid write of 0x%02x at [" TARGET_FMT_lx "]\n", val, addr); |
520 |
#endif
|
521 |
break;
|
522 |
} |
523 |
} |
524 |
|
525 |
static void int_writew(void *opaque, target_phys_addr_t addr, uint32_t val) |
526 |
{ |
527 |
int_writeb(opaque, addr, val & 0xff);
|
528 |
int_writeb(opaque, addr + 1, (val >> 8) & 0xff); |
529 |
} |
530 |
|
531 |
static void int_writel(void *opaque, target_phys_addr_t addr, uint32_t val) |
532 |
{ |
533 |
int_writeb(opaque, addr, val & 0xff);
|
534 |
int_writeb(opaque, addr + 1, (val >> 8) & 0xff); |
535 |
int_writeb(opaque, addr + 2, (val >> 16) & 0xff); |
536 |
int_writeb(opaque, addr + 3, (val >> 24) & 0xff); |
537 |
} |
538 |
|
539 |
static CPUReadMemoryFunc *int_read[3] = { |
540 |
int_readb, |
541 |
int_readw, |
542 |
int_readl, |
543 |
}; |
544 |
|
545 |
static CPUWriteMemoryFunc *int_write[3] = { |
546 |
int_writeb, |
547 |
int_writew, |
548 |
int_writel, |
549 |
}; |
550 |
|
551 |
#define G364_512KB_RAM (0x0) |
552 |
#define G364_2MB_RAM (0x1) |
553 |
#define G364_8MB_RAM (0x2) |
554 |
#define G364_32MB_RAM (0x3) |
555 |
|
556 |
static void rc4030_reset(void *opaque) |
557 |
{ |
558 |
rc4030State *s = opaque; |
559 |
int i;
|
560 |
|
561 |
s->config = (G364_2MB_RAM << 8) | 0x04; |
562 |
s->invalid_address_register = 0;
|
563 |
|
564 |
memset(s->dma_regs, 0, sizeof(s->dma_regs)); |
565 |
s->dma_tl_base = s->dma_tl_limit = 0;
|
566 |
|
567 |
s->remote_failed_address = s->memory_failed_address = 0;
|
568 |
s->cache_ptag = s->cache_ltag = 0;
|
569 |
s->cache_bmask = s->cache_bwin = 0;
|
570 |
|
571 |
s->offset208 = 0;
|
572 |
s->offset210 = 0x18186;
|
573 |
s->nvram_protect = 7;
|
574 |
s->offset238 = 7;
|
575 |
for (i = 0; i < 15; i++) |
576 |
s->rem_speed[i] = 7;
|
577 |
s->imr_jazz = s->isr_jazz = 0;
|
578 |
|
579 |
s->itr = 0;
|
580 |
s->dummy32 = 0;
|
581 |
|
582 |
qemu_irq_lower(s->timer_irq); |
583 |
qemu_irq_lower(s->jazz_bus_irq); |
584 |
} |
585 |
|
586 |
qemu_irq *rc4030_init(qemu_irq timer, qemu_irq jazz_bus) |
587 |
{ |
588 |
rc4030State *s; |
589 |
int s_chipset, s_int;
|
590 |
|
591 |
s = qemu_mallocz(sizeof(rc4030State));
|
592 |
if (!s)
|
593 |
return NULL; |
594 |
|
595 |
s->periodic_timer = qemu_new_timer(vm_clock, rc4030_periodic_timer, s); |
596 |
s->timer_irq = timer; |
597 |
s->jazz_bus_irq = jazz_bus; |
598 |
|
599 |
qemu_register_reset(rc4030_reset, s); |
600 |
rc4030_reset(s); |
601 |
|
602 |
s_chipset = cpu_register_io_memory(0, rc4030_read, rc4030_write, s);
|
603 |
cpu_register_physical_memory(0x80000000, 0x300, s_chipset); |
604 |
s_int = cpu_register_io_memory(0, int_read, int_write, s);
|
605 |
cpu_register_physical_memory(0xf0000000, 0x00001000, s_int); |
606 |
|
607 |
return qemu_allocate_irqs(rc4030_irq_jazz_request, s, 16); |
608 |
} |