diff options
author | 2017-04-25 03:31:15 -0700 | |
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committer | 2017-05-22 06:48:08 +0000 | |
commit | bb756eebdac6fd24e8919e2c43f7d2c8c4091f59 (patch) | |
tree | ca11e03542edf2d8f631efeca5e1626d211107e3 /qemu/hw/dma/pl330.c | |
parent | a14b48d18a9ed03ec191cf16b162206998a895ce (diff) |
Adding qemu as a submodule of KVMFORNFV
This Patch includes the changes to add qemu as a submodule to
kvmfornfv repo and make use of the updated latest qemu for the
execution of all testcase
Change-Id: I1280af507a857675c7f81d30c95255635667bdd7
Signed-off-by:RajithaY<rajithax.yerrumsetty@intel.com>
Diffstat (limited to 'qemu/hw/dma/pl330.c')
-rw-r--r-- | qemu/hw/dma/pl330.c | 1668 |
1 files changed, 0 insertions, 1668 deletions
diff --git a/qemu/hw/dma/pl330.c b/qemu/hw/dma/pl330.c deleted file mode 100644 index ea89ecb00..000000000 --- a/qemu/hw/dma/pl330.c +++ /dev/null @@ -1,1668 +0,0 @@ -/* - * ARM PrimeCell PL330 DMA Controller - * - * Copyright (c) 2009 Samsung Electronics. - * Contributed by Kirill Batuzov <batuzovk@ispras.ru> - * Copyright (c) 2012 Peter A.G. Crosthwaite (peter.crosthwaite@petalogix.com) - * Copyright (c) 2012 PetaLogix Pty Ltd. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; version 2 or later. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, see <http://www.gnu.org/licenses/>. - */ - -#include "qemu/osdep.h" -#include "hw/sysbus.h" -#include "qapi/error.h" -#include "qemu/timer.h" -#include "sysemu/dma.h" - -#ifndef PL330_ERR_DEBUG -#define PL330_ERR_DEBUG 0 -#endif - -#define DB_PRINT_L(lvl, fmt, args...) do {\ - if (PL330_ERR_DEBUG >= lvl) {\ - fprintf(stderr, "PL330: %s:" fmt, __func__, ## args);\ - } \ -} while (0); - -#define DB_PRINT(fmt, args...) DB_PRINT_L(1, fmt, ## args) - -#define PL330_PERIPH_NUM 32 -#define PL330_MAX_BURST_LEN 128 -#define PL330_INSN_MAXSIZE 6 - -#define PL330_FIFO_OK 0 -#define PL330_FIFO_STALL 1 -#define PL330_FIFO_ERR (-1) - -#define PL330_FAULT_UNDEF_INSTR (1 << 0) -#define PL330_FAULT_OPERAND_INVALID (1 << 1) -#define PL330_FAULT_DMAGO_ERR (1 << 4) -#define PL330_FAULT_EVENT_ERR (1 << 5) -#define PL330_FAULT_CH_PERIPH_ERR (1 << 6) -#define PL330_FAULT_CH_RDWR_ERR (1 << 7) -#define PL330_FAULT_ST_DATA_UNAVAILABLE (1 << 12) -#define PL330_FAULT_FIFOEMPTY_ERR (1 << 13) -#define PL330_FAULT_INSTR_FETCH_ERR (1 << 16) -#define PL330_FAULT_DATA_WRITE_ERR (1 << 17) -#define PL330_FAULT_DATA_READ_ERR (1 << 18) -#define PL330_FAULT_DBG_INSTR (1 << 30) -#define PL330_FAULT_LOCKUP_ERR (1 << 31) - -#define PL330_UNTAGGED 0xff - -#define PL330_SINGLE 0x0 -#define PL330_BURST 0x1 - -#define PL330_WATCHDOG_LIMIT 1024 - -/* IOMEM mapped registers */ -#define PL330_REG_DSR 0x000 -#define PL330_REG_DPC 0x004 -#define PL330_REG_INTEN 0x020 -#define PL330_REG_INT_EVENT_RIS 0x024 -#define PL330_REG_INTMIS 0x028 -#define PL330_REG_INTCLR 0x02C -#define PL330_REG_FSRD 0x030 -#define PL330_REG_FSRC 0x034 -#define PL330_REG_FTRD 0x038 -#define PL330_REG_FTR_BASE 0x040 -#define PL330_REG_CSR_BASE 0x100 -#define PL330_REG_CPC_BASE 0x104 -#define PL330_REG_CHANCTRL 0x400 -#define PL330_REG_DBGSTATUS 0xD00 -#define PL330_REG_DBGCMD 0xD04 -#define PL330_REG_DBGINST0 0xD08 -#define PL330_REG_DBGINST1 0xD0C -#define PL330_REG_CR0_BASE 0xE00 -#define PL330_REG_PERIPH_ID 0xFE0 - -#define PL330_IOMEM_SIZE 0x1000 - -#define CFG_BOOT_ADDR 2 -#define CFG_INS 3 -#define CFG_PNS 4 -#define CFG_CRD 5 - -static const uint32_t pl330_id[] = { - 0x30, 0x13, 0x24, 0x00, 0x0D, 0xF0, 0x05, 0xB1 -}; - -/* DMA channel states as they are described in PL330 Technical Reference Manual - * Most of them will not be used in emulation. - */ -typedef enum { - pl330_chan_stopped = 0, - pl330_chan_executing = 1, - pl330_chan_cache_miss = 2, - pl330_chan_updating_pc = 3, - pl330_chan_waiting_event = 4, - pl330_chan_at_barrier = 5, - pl330_chan_queue_busy = 6, - pl330_chan_waiting_periph = 7, - pl330_chan_killing = 8, - pl330_chan_completing = 9, - pl330_chan_fault_completing = 14, - pl330_chan_fault = 15, -} PL330ChanState; - -typedef struct PL330State PL330State; - -typedef struct PL330Chan { - uint32_t src; - uint32_t dst; - uint32_t pc; - uint32_t control; - uint32_t status; - uint32_t lc[2]; - uint32_t fault_type; - uint32_t watchdog_timer; - - bool ns; - uint8_t request_flag; - uint8_t wakeup; - uint8_t wfp_sbp; - - uint8_t state; - uint8_t stall; - - bool is_manager; - PL330State *parent; - uint8_t tag; -} PL330Chan; - -static const VMStateDescription vmstate_pl330_chan = { - .name = "pl330_chan", - .version_id = 1, - .minimum_version_id = 1, - .fields = (VMStateField[]) { - VMSTATE_UINT32(src, PL330Chan), - VMSTATE_UINT32(dst, PL330Chan), - VMSTATE_UINT32(pc, PL330Chan), - VMSTATE_UINT32(control, PL330Chan), - VMSTATE_UINT32(status, PL330Chan), - VMSTATE_UINT32_ARRAY(lc, PL330Chan, 2), - VMSTATE_UINT32(fault_type, PL330Chan), - VMSTATE_UINT32(watchdog_timer, PL330Chan), - VMSTATE_BOOL(ns, PL330Chan), - VMSTATE_UINT8(request_flag, PL330Chan), - VMSTATE_UINT8(wakeup, PL330Chan), - VMSTATE_UINT8(wfp_sbp, PL330Chan), - VMSTATE_UINT8(state, PL330Chan), - VMSTATE_UINT8(stall, PL330Chan), - VMSTATE_END_OF_LIST() - } -}; - -typedef struct PL330Fifo { - uint8_t *buf; - uint8_t *tag; - uint32_t head; - uint32_t num; - uint32_t buf_size; -} PL330Fifo; - -static const VMStateDescription vmstate_pl330_fifo = { - .name = "pl330_chan", - .version_id = 1, - .minimum_version_id = 1, - .fields = (VMStateField[]) { - VMSTATE_VBUFFER_UINT32(buf, PL330Fifo, 1, NULL, 0, buf_size), - VMSTATE_VBUFFER_UINT32(tag, PL330Fifo, 1, NULL, 0, buf_size), - VMSTATE_UINT32(head, PL330Fifo), - VMSTATE_UINT32(num, PL330Fifo), - VMSTATE_UINT32(buf_size, PL330Fifo), - VMSTATE_END_OF_LIST() - } -}; - -typedef struct PL330QueueEntry { - uint32_t addr; - uint32_t len; - uint8_t n; - bool inc; - bool z; - uint8_t tag; - uint8_t seqn; -} PL330QueueEntry; - -static const VMStateDescription vmstate_pl330_queue_entry = { - .name = "pl330_queue_entry", - .version_id = 1, - .minimum_version_id = 1, - .fields = (VMStateField[]) { - VMSTATE_UINT32(addr, PL330QueueEntry), - VMSTATE_UINT32(len, PL330QueueEntry), - VMSTATE_UINT8(n, PL330QueueEntry), - VMSTATE_BOOL(inc, PL330QueueEntry), - VMSTATE_BOOL(z, PL330QueueEntry), - VMSTATE_UINT8(tag, PL330QueueEntry), - VMSTATE_UINT8(seqn, PL330QueueEntry), - VMSTATE_END_OF_LIST() - } -}; - -typedef struct PL330Queue { - PL330State *parent; - PL330QueueEntry *queue; - uint32_t queue_size; -} PL330Queue; - -static const VMStateDescription vmstate_pl330_queue = { - .name = "pl330_queue", - .version_id = 1, - .minimum_version_id = 1, - .fields = (VMStateField[]) { - VMSTATE_STRUCT_VARRAY_UINT32(queue, PL330Queue, queue_size, 1, - vmstate_pl330_queue_entry, PL330QueueEntry), - VMSTATE_END_OF_LIST() - } -}; - -struct PL330State { - SysBusDevice parent_obj; - - MemoryRegion iomem; - qemu_irq irq_abort; - qemu_irq *irq; - - /* Config registers. cfg[5] = CfgDn. */ - uint32_t cfg[6]; -#define EVENT_SEC_STATE 3 -#define PERIPH_SEC_STATE 4 - /* cfg 0 bits and pieces */ - uint32_t num_chnls; - uint8_t num_periph_req; - uint8_t num_events; - uint8_t mgr_ns_at_rst; - /* cfg 1 bits and pieces */ - uint8_t i_cache_len; - uint8_t num_i_cache_lines; - /* CRD bits and pieces */ - uint8_t data_width; - uint8_t wr_cap; - uint8_t wr_q_dep; - uint8_t rd_cap; - uint8_t rd_q_dep; - uint16_t data_buffer_dep; - - PL330Chan manager; - PL330Chan *chan; - PL330Fifo fifo; - PL330Queue read_queue; - PL330Queue write_queue; - uint8_t *lo_seqn; - uint8_t *hi_seqn; - QEMUTimer *timer; /* is used for restore dma. */ - - uint32_t inten; - uint32_t int_status; - uint32_t ev_status; - uint32_t dbg[2]; - uint8_t debug_status; - uint8_t num_faulting; - uint8_t periph_busy[PL330_PERIPH_NUM]; - -}; - -#define TYPE_PL330 "pl330" -#define PL330(obj) OBJECT_CHECK(PL330State, (obj), TYPE_PL330) - -static const VMStateDescription vmstate_pl330 = { - .name = "pl330", - .version_id = 1, - .minimum_version_id = 1, - .fields = (VMStateField[]) { - VMSTATE_STRUCT(manager, PL330State, 0, vmstate_pl330_chan, PL330Chan), - VMSTATE_STRUCT_VARRAY_UINT32(chan, PL330State, num_chnls, 0, - vmstate_pl330_chan, PL330Chan), - VMSTATE_VBUFFER_UINT32(lo_seqn, PL330State, 1, NULL, 0, num_chnls), - VMSTATE_VBUFFER_UINT32(hi_seqn, PL330State, 1, NULL, 0, num_chnls), - VMSTATE_STRUCT(fifo, PL330State, 0, vmstate_pl330_fifo, PL330Fifo), - VMSTATE_STRUCT(read_queue, PL330State, 0, vmstate_pl330_queue, - PL330Queue), - VMSTATE_STRUCT(write_queue, PL330State, 0, vmstate_pl330_queue, - PL330Queue), - VMSTATE_TIMER_PTR(timer, PL330State), - VMSTATE_UINT32(inten, PL330State), - VMSTATE_UINT32(int_status, PL330State), - VMSTATE_UINT32(ev_status, PL330State), - VMSTATE_UINT32_ARRAY(dbg, PL330State, 2), - VMSTATE_UINT8(debug_status, PL330State), - VMSTATE_UINT8(num_faulting, PL330State), - VMSTATE_UINT8_ARRAY(periph_busy, PL330State, PL330_PERIPH_NUM), - VMSTATE_END_OF_LIST() - } -}; - -typedef struct PL330InsnDesc { - /* OPCODE of the instruction */ - uint8_t opcode; - /* Mask so we can select several sibling instructions, such as - DMALD, DMALDS and DMALDB */ - uint8_t opmask; - /* Size of instruction in bytes */ - uint8_t size; - /* Interpreter */ - void (*exec)(PL330Chan *, uint8_t opcode, uint8_t *args, int len); -} PL330InsnDesc; - - -/* MFIFO Implementation - * - * MFIFO is implemented as a cyclic buffer of BUF_SIZE size. Tagged bytes are - * stored in this buffer. Data is stored in BUF field, tags - in the - * corresponding array elements of TAG field. - */ - -/* Initialize queue. */ - -static void pl330_fifo_init(PL330Fifo *s, uint32_t size) -{ - s->buf = g_malloc0(size); - s->tag = g_malloc0(size); - s->buf_size = size; -} - -/* Cyclic increment */ - -static inline int pl330_fifo_inc(PL330Fifo *s, int x) -{ - return (x + 1) % s->buf_size; -} - -/* Number of empty bytes in MFIFO */ - -static inline int pl330_fifo_num_free(PL330Fifo *s) -{ - return s->buf_size - s->num; -} - -/* Push LEN bytes of data stored in BUF to MFIFO and tag it with TAG. - * Zero returned on success, PL330_FIFO_STALL if there is no enough free - * space in MFIFO to store requested amount of data. If push was unsuccessful - * no data is stored to MFIFO. - */ - -static int pl330_fifo_push(PL330Fifo *s, uint8_t *buf, int len, uint8_t tag) -{ - int i; - - if (s->buf_size - s->num < len) { - return PL330_FIFO_STALL; - } - for (i = 0; i < len; i++) { - int push_idx = (s->head + s->num + i) % s->buf_size; - s->buf[push_idx] = buf[i]; - s->tag[push_idx] = tag; - } - s->num += len; - return PL330_FIFO_OK; -} - -/* Get LEN bytes of data from MFIFO and store it to BUF. Tag value of each - * byte is verified. Zero returned on success, PL330_FIFO_ERR on tag mismatch - * and PL330_FIFO_STALL if there is no enough data in MFIFO. If get was - * unsuccessful no data is removed from MFIFO. - */ - -static int pl330_fifo_get(PL330Fifo *s, uint8_t *buf, int len, uint8_t tag) -{ - int i; - - if (s->num < len) { - return PL330_FIFO_STALL; - } - for (i = 0; i < len; i++) { - if (s->tag[s->head] == tag) { - int get_idx = (s->head + i) % s->buf_size; - buf[i] = s->buf[get_idx]; - } else { /* Tag mismatch - Rollback transaction */ - return PL330_FIFO_ERR; - } - } - s->head = (s->head + len) % s->buf_size; - s->num -= len; - return PL330_FIFO_OK; -} - -/* Reset MFIFO. This completely erases all data in it. */ - -static inline void pl330_fifo_reset(PL330Fifo *s) -{ - s->head = 0; - s->num = 0; -} - -/* Return tag of the first byte stored in MFIFO. If MFIFO is empty - * PL330_UNTAGGED is returned. - */ - -static inline uint8_t pl330_fifo_tag(PL330Fifo *s) -{ - return (!s->num) ? PL330_UNTAGGED : s->tag[s->head]; -} - -/* Returns non-zero if tag TAG is present in fifo or zero otherwise */ - -static int pl330_fifo_has_tag(PL330Fifo *s, uint8_t tag) -{ - int i, n; - - i = s->head; - for (n = 0; n < s->num; n++) { - if (s->tag[i] == tag) { - return 1; - } - i = pl330_fifo_inc(s, i); - } - return 0; -} - -/* Remove all entry tagged with TAG from MFIFO */ - -static void pl330_fifo_tagged_remove(PL330Fifo *s, uint8_t tag) -{ - int i, t, n; - - t = i = s->head; - for (n = 0; n < s->num; n++) { - if (s->tag[i] != tag) { - s->buf[t] = s->buf[i]; - s->tag[t] = s->tag[i]; - t = pl330_fifo_inc(s, t); - } else { - s->num = s->num - 1; - } - i = pl330_fifo_inc(s, i); - } -} - -/* Read-Write Queue implementation - * - * A Read-Write Queue stores up to QUEUE_SIZE instructions (loads or stores). - * Each instruction is described by source (for loads) or destination (for - * stores) address ADDR, width of data to be loaded/stored LEN, number of - * stores/loads to be performed N, INC bit, Z bit and TAG to identify channel - * this instruction belongs to. Queue does not store any information about - * nature of the instruction: is it load or store. PL330 has different queues - * for loads and stores so this is already known at the top level where it - * matters. - * - * Queue works as FIFO for instructions with equivalent tags, but can issue - * instructions with different tags in arbitrary order. SEQN field attached to - * each instruction helps to achieve this. For each TAG queue contains - * instructions with consecutive SEQN values ranging from LO_SEQN[TAG] to - * HI_SEQN[TAG]-1 inclusive. SEQN is 8-bit unsigned integer, so SEQN=255 is - * followed by SEQN=0. - * - * Z bit indicates that zeroes should be stored. No MFIFO fetches are performed - * in this case. - */ - -static void pl330_queue_reset(PL330Queue *s) -{ - int i; - - for (i = 0; i < s->queue_size; i++) { - s->queue[i].tag = PL330_UNTAGGED; - } -} - -/* Initialize queue */ -static void pl330_queue_init(PL330Queue *s, int size, PL330State *parent) -{ - s->parent = parent; - s->queue = g_new0(PL330QueueEntry, size); - s->queue_size = size; -} - -/* Returns pointer to an empty slot or NULL if queue is full */ -static PL330QueueEntry *pl330_queue_find_empty(PL330Queue *s) -{ - int i; - - for (i = 0; i < s->queue_size; i++) { - if (s->queue[i].tag == PL330_UNTAGGED) { - return &s->queue[i]; - } - } - return NULL; -} - -/* Put instruction in queue. - * Return value: - * - zero - OK - * - non-zero - queue is full - */ - -static int pl330_queue_put_insn(PL330Queue *s, uint32_t addr, - int len, int n, bool inc, bool z, uint8_t tag) -{ - PL330QueueEntry *entry = pl330_queue_find_empty(s); - - if (!entry) { - return 1; - } - entry->tag = tag; - entry->addr = addr; - entry->len = len; - entry->n = n; - entry->z = z; - entry->inc = inc; - entry->seqn = s->parent->hi_seqn[tag]; - s->parent->hi_seqn[tag]++; - return 0; -} - -/* Returns a pointer to queue slot containing instruction which satisfies - * following conditions: - * - it has valid tag value (not PL330_UNTAGGED) - * - if enforce_seq is set it has to be issuable without violating queue - * logic (see above) - * - if TAG argument is not PL330_UNTAGGED this instruction has tag value - * equivalent to the argument TAG value. - * If such instruction cannot be found NULL is returned. - */ - -static PL330QueueEntry *pl330_queue_find_insn(PL330Queue *s, uint8_t tag, - bool enforce_seq) -{ - int i; - - for (i = 0; i < s->queue_size; i++) { - if (s->queue[i].tag != PL330_UNTAGGED) { - if ((!enforce_seq || - s->queue[i].seqn == s->parent->lo_seqn[s->queue[i].tag]) && - (s->queue[i].tag == tag || tag == PL330_UNTAGGED || - s->queue[i].z)) { - return &s->queue[i]; - } - } - } - return NULL; -} - -/* Removes instruction from queue. */ - -static inline void pl330_queue_remove_insn(PL330Queue *s, PL330QueueEntry *e) -{ - s->parent->lo_seqn[e->tag]++; - e->tag = PL330_UNTAGGED; -} - -/* Removes all instructions tagged with TAG from queue. */ - -static inline void pl330_queue_remove_tagged(PL330Queue *s, uint8_t tag) -{ - int i; - - for (i = 0; i < s->queue_size; i++) { - if (s->queue[i].tag == tag) { - s->queue[i].tag = PL330_UNTAGGED; - } - } -} - -/* DMA instruction execution engine */ - -/* Moves DMA channel to the FAULT state and updates it's status. */ - -static inline void pl330_fault(PL330Chan *ch, uint32_t flags) -{ - DB_PRINT("ch: %p, flags: %" PRIx32 "\n", ch, flags); - ch->fault_type |= flags; - if (ch->state == pl330_chan_fault) { - return; - } - ch->state = pl330_chan_fault; - ch->parent->num_faulting++; - if (ch->parent->num_faulting == 1) { - DB_PRINT("abort interrupt raised\n"); - qemu_irq_raise(ch->parent->irq_abort); - } -} - -/* - * For information about instructions see PL330 Technical Reference Manual. - * - * Arguments: - * CH - channel executing the instruction - * OPCODE - opcode - * ARGS - array of 8-bit arguments - * LEN - number of elements in ARGS array - */ - -static void pl330_dmaadxh(PL330Chan *ch, uint8_t *args, bool ra, bool neg) -{ - uint32_t im = (args[1] << 8) | args[0]; - if (neg) { - im |= 0xffffu << 16; - } - - if (ch->is_manager) { - pl330_fault(ch, PL330_FAULT_UNDEF_INSTR); - return; - } - if (ra) { - ch->dst += im; - } else { - ch->src += im; - } -} - -static void pl330_dmaaddh(PL330Chan *ch, uint8_t opcode, uint8_t *args, int len) -{ - pl330_dmaadxh(ch, args, extract32(opcode, 1, 1), false); -} - -static void pl330_dmaadnh(PL330Chan *ch, uint8_t opcode, uint8_t *args, int len) -{ - pl330_dmaadxh(ch, args, extract32(opcode, 1, 1), true); -} - -static void pl330_dmaend(PL330Chan *ch, uint8_t opcode, - uint8_t *args, int len) -{ - PL330State *s = ch->parent; - - if (ch->state == pl330_chan_executing && !ch->is_manager) { - /* Wait for all transfers to complete */ - if (pl330_fifo_has_tag(&s->fifo, ch->tag) || - pl330_queue_find_insn(&s->read_queue, ch->tag, false) != NULL || - pl330_queue_find_insn(&s->write_queue, ch->tag, false) != NULL) { - - ch->stall = 1; - return; - } - } - DB_PRINT("DMA ending!\n"); - pl330_fifo_tagged_remove(&s->fifo, ch->tag); - pl330_queue_remove_tagged(&s->read_queue, ch->tag); - pl330_queue_remove_tagged(&s->write_queue, ch->tag); - ch->state = pl330_chan_stopped; -} - -static void pl330_dmaflushp(PL330Chan *ch, uint8_t opcode, - uint8_t *args, int len) -{ - uint8_t periph_id; - - if (args[0] & 7) { - pl330_fault(ch, PL330_FAULT_OPERAND_INVALID); - return; - } - periph_id = (args[0] >> 3) & 0x1f; - if (periph_id >= ch->parent->num_periph_req) { - pl330_fault(ch, PL330_FAULT_OPERAND_INVALID); - return; - } - if (ch->ns && !(ch->parent->cfg[CFG_PNS] & (1 << periph_id))) { - pl330_fault(ch, PL330_FAULT_CH_PERIPH_ERR); - return; - } - /* Do nothing */ -} - -static void pl330_dmago(PL330Chan *ch, uint8_t opcode, uint8_t *args, int len) -{ - uint8_t chan_id; - uint8_t ns; - uint32_t pc; - PL330Chan *s; - - DB_PRINT("\n"); - - if (!ch->is_manager) { - pl330_fault(ch, PL330_FAULT_UNDEF_INSTR); - return; - } - ns = !!(opcode & 2); - chan_id = args[0] & 7; - if ((args[0] >> 3)) { - pl330_fault(ch, PL330_FAULT_OPERAND_INVALID); - return; - } - if (chan_id >= ch->parent->num_chnls) { - pl330_fault(ch, PL330_FAULT_OPERAND_INVALID); - return; - } - pc = (((uint32_t)args[4]) << 24) | (((uint32_t)args[3]) << 16) | - (((uint32_t)args[2]) << 8) | (((uint32_t)args[1])); - if (ch->parent->chan[chan_id].state != pl330_chan_stopped) { - pl330_fault(ch, PL330_FAULT_OPERAND_INVALID); - return; - } - if (ch->ns && !ns) { - pl330_fault(ch, PL330_FAULT_DMAGO_ERR); - return; - } - s = &ch->parent->chan[chan_id]; - s->ns = ns; - s->pc = pc; - s->state = pl330_chan_executing; -} - -static void pl330_dmald(PL330Chan *ch, uint8_t opcode, uint8_t *args, int len) -{ - uint8_t bs = opcode & 3; - uint32_t size, num; - bool inc; - - if (bs == 2) { - pl330_fault(ch, PL330_FAULT_OPERAND_INVALID); - return; - } - if ((bs == 1 && ch->request_flag == PL330_BURST) || - (bs == 3 && ch->request_flag == PL330_SINGLE)) { - /* Perform NOP */ - return; - } - if (bs == 1 && ch->request_flag == PL330_SINGLE) { - num = 1; - } else { - num = ((ch->control >> 4) & 0xf) + 1; - } - size = (uint32_t)1 << ((ch->control >> 1) & 0x7); - inc = !!(ch->control & 1); - ch->stall = pl330_queue_put_insn(&ch->parent->read_queue, ch->src, - size, num, inc, 0, ch->tag); - if (!ch->stall) { - DB_PRINT("channel:%" PRId8 " address:%08" PRIx32 " size:%" PRIx32 - " num:%" PRId32 " %c\n", - ch->tag, ch->src, size, num, inc ? 'Y' : 'N'); - ch->src += inc ? size * num - (ch->src & (size - 1)) : 0; - } -} - -static void pl330_dmaldp(PL330Chan *ch, uint8_t opcode, uint8_t *args, int len) -{ - uint8_t periph_id; - - if (args[0] & 7) { - pl330_fault(ch, PL330_FAULT_OPERAND_INVALID); - return; - } - periph_id = (args[0] >> 3) & 0x1f; - if (periph_id >= ch->parent->num_periph_req) { - pl330_fault(ch, PL330_FAULT_OPERAND_INVALID); - return; - } - if (ch->ns && !(ch->parent->cfg[CFG_PNS] & (1 << periph_id))) { - pl330_fault(ch, PL330_FAULT_CH_PERIPH_ERR); - return; - } - pl330_dmald(ch, opcode, args, len); -} - -static void pl330_dmalp(PL330Chan *ch, uint8_t opcode, uint8_t *args, int len) -{ - uint8_t lc = (opcode & 2) >> 1; - - ch->lc[lc] = args[0]; -} - -static void pl330_dmakill(PL330Chan *ch, uint8_t opcode, uint8_t *args, int len) -{ - if (ch->state == pl330_chan_fault || - ch->state == pl330_chan_fault_completing) { - /* This is the only way for a channel to leave the faulting state */ - ch->fault_type = 0; - ch->parent->num_faulting--; - if (ch->parent->num_faulting == 0) { - DB_PRINT("abort interrupt lowered\n"); - qemu_irq_lower(ch->parent->irq_abort); - } - } - ch->state = pl330_chan_killing; - pl330_fifo_tagged_remove(&ch->parent->fifo, ch->tag); - pl330_queue_remove_tagged(&ch->parent->read_queue, ch->tag); - pl330_queue_remove_tagged(&ch->parent->write_queue, ch->tag); - ch->state = pl330_chan_stopped; -} - -static void pl330_dmalpend(PL330Chan *ch, uint8_t opcode, - uint8_t *args, int len) -{ - uint8_t nf = (opcode & 0x10) >> 4; - uint8_t bs = opcode & 3; - uint8_t lc = (opcode & 4) >> 2; - - if (bs == 2) { - pl330_fault(ch, PL330_FAULT_OPERAND_INVALID); - return; - } - if ((bs == 1 && ch->request_flag == PL330_BURST) || - (bs == 3 && ch->request_flag == PL330_SINGLE)) { - /* Perform NOP */ - return; - } - if (!nf || ch->lc[lc]) { - if (nf) { - ch->lc[lc]--; - } - DB_PRINT("loop reiteration\n"); - ch->pc -= args[0]; - ch->pc -= len + 1; - /* "ch->pc -= args[0] + len + 1" is incorrect when args[0] == 256 */ - } else { - DB_PRINT("loop fallthrough\n"); - } -} - - -static void pl330_dmamov(PL330Chan *ch, uint8_t opcode, uint8_t *args, int len) -{ - uint8_t rd = args[0] & 7; - uint32_t im; - - if ((args[0] >> 3)) { - pl330_fault(ch, PL330_FAULT_OPERAND_INVALID); - return; - } - im = (((uint32_t)args[4]) << 24) | (((uint32_t)args[3]) << 16) | - (((uint32_t)args[2]) << 8) | (((uint32_t)args[1])); - switch (rd) { - case 0: - ch->src = im; - break; - case 1: - ch->control = im; - break; - case 2: - ch->dst = im; - break; - default: - pl330_fault(ch, PL330_FAULT_OPERAND_INVALID); - return; - } -} - -static void pl330_dmanop(PL330Chan *ch, uint8_t opcode, - uint8_t *args, int len) -{ - /* NOP is NOP. */ -} - -static void pl330_dmarmb(PL330Chan *ch, uint8_t opcode, uint8_t *args, int len) -{ - if (pl330_queue_find_insn(&ch->parent->read_queue, ch->tag, false)) { - ch->state = pl330_chan_at_barrier; - ch->stall = 1; - return; - } else { - ch->state = pl330_chan_executing; - } -} - -static void pl330_dmasev(PL330Chan *ch, uint8_t opcode, uint8_t *args, int len) -{ - uint8_t ev_id; - - if (args[0] & 7) { - pl330_fault(ch, PL330_FAULT_OPERAND_INVALID); - return; - } - ev_id = (args[0] >> 3) & 0x1f; - if (ev_id >= ch->parent->num_events) { - pl330_fault(ch, PL330_FAULT_OPERAND_INVALID); - return; - } - if (ch->ns && !(ch->parent->cfg[CFG_INS] & (1 << ev_id))) { - pl330_fault(ch, PL330_FAULT_EVENT_ERR); - return; - } - if (ch->parent->inten & (1 << ev_id)) { - ch->parent->int_status |= (1 << ev_id); - DB_PRINT("event interrupt raised %" PRId8 "\n", ev_id); - qemu_irq_raise(ch->parent->irq[ev_id]); - } - DB_PRINT("event raised %" PRId8 "\n", ev_id); - ch->parent->ev_status |= (1 << ev_id); -} - -static void pl330_dmast(PL330Chan *ch, uint8_t opcode, uint8_t *args, int len) -{ - uint8_t bs = opcode & 3; - uint32_t size, num; - bool inc; - - if (bs == 2) { - pl330_fault(ch, PL330_FAULT_OPERAND_INVALID); - return; - } - if ((bs == 1 && ch->request_flag == PL330_BURST) || - (bs == 3 && ch->request_flag == PL330_SINGLE)) { - /* Perform NOP */ - return; - } - num = ((ch->control >> 18) & 0xf) + 1; - size = (uint32_t)1 << ((ch->control >> 15) & 0x7); - inc = !!((ch->control >> 14) & 1); - ch->stall = pl330_queue_put_insn(&ch->parent->write_queue, ch->dst, - size, num, inc, 0, ch->tag); - if (!ch->stall) { - DB_PRINT("channel:%" PRId8 " address:%08" PRIx32 " size:%" PRIx32 - " num:%" PRId32 " %c\n", - ch->tag, ch->dst, size, num, inc ? 'Y' : 'N'); - ch->dst += inc ? size * num - (ch->dst & (size - 1)) : 0; - } -} - -static void pl330_dmastp(PL330Chan *ch, uint8_t opcode, - uint8_t *args, int len) -{ - uint8_t periph_id; - - if (args[0] & 7) { - pl330_fault(ch, PL330_FAULT_OPERAND_INVALID); - return; - } - periph_id = (args[0] >> 3) & 0x1f; - if (periph_id >= ch->parent->num_periph_req) { - pl330_fault(ch, PL330_FAULT_OPERAND_INVALID); - return; - } - if (ch->ns && !(ch->parent->cfg[CFG_PNS] & (1 << periph_id))) { - pl330_fault(ch, PL330_FAULT_CH_PERIPH_ERR); - return; - } - pl330_dmast(ch, opcode, args, len); -} - -static void pl330_dmastz(PL330Chan *ch, uint8_t opcode, - uint8_t *args, int len) -{ - uint32_t size, num; - bool inc; - - num = ((ch->control >> 18) & 0xf) + 1; - size = (uint32_t)1 << ((ch->control >> 15) & 0x7); - inc = !!((ch->control >> 14) & 1); - ch->stall = pl330_queue_put_insn(&ch->parent->write_queue, ch->dst, - size, num, inc, 1, ch->tag); - if (inc) { - ch->dst += size * num; - } -} - -static void pl330_dmawfe(PL330Chan *ch, uint8_t opcode, - uint8_t *args, int len) -{ - uint8_t ev_id; - int i; - - if (args[0] & 5) { - pl330_fault(ch, PL330_FAULT_OPERAND_INVALID); - return; - } - ev_id = (args[0] >> 3) & 0x1f; - if (ev_id >= ch->parent->num_events) { - pl330_fault(ch, PL330_FAULT_OPERAND_INVALID); - return; - } - if (ch->ns && !(ch->parent->cfg[CFG_INS] & (1 << ev_id))) { - pl330_fault(ch, PL330_FAULT_EVENT_ERR); - return; - } - ch->wakeup = ev_id; - ch->state = pl330_chan_waiting_event; - if (~ch->parent->inten & ch->parent->ev_status & 1 << ev_id) { - ch->state = pl330_chan_executing; - /* If anyone else is currently waiting on the same event, let them - * clear the ev_status so they pick up event as well - */ - for (i = 0; i < ch->parent->num_chnls; ++i) { - PL330Chan *peer = &ch->parent->chan[i]; - if (peer->state == pl330_chan_waiting_event && - peer->wakeup == ev_id) { - return; - } - } - ch->parent->ev_status &= ~(1 << ev_id); - DB_PRINT("event lowered %" PRIx8 "\n", ev_id); - } else { - ch->stall = 1; - } -} - -static void pl330_dmawfp(PL330Chan *ch, uint8_t opcode, - uint8_t *args, int len) -{ - uint8_t bs = opcode & 3; - uint8_t periph_id; - - if (args[0] & 7) { - pl330_fault(ch, PL330_FAULT_OPERAND_INVALID); - return; - } - periph_id = (args[0] >> 3) & 0x1f; - if (periph_id >= ch->parent->num_periph_req) { - pl330_fault(ch, PL330_FAULT_OPERAND_INVALID); - return; - } - if (ch->ns && !(ch->parent->cfg[CFG_PNS] & (1 << periph_id))) { - pl330_fault(ch, PL330_FAULT_CH_PERIPH_ERR); - return; - } - switch (bs) { - case 0: /* S */ - ch->request_flag = PL330_SINGLE; - ch->wfp_sbp = 0; - break; - case 1: /* P */ - ch->request_flag = PL330_BURST; - ch->wfp_sbp = 2; - break; - case 2: /* B */ - ch->request_flag = PL330_BURST; - ch->wfp_sbp = 1; - break; - default: - pl330_fault(ch, PL330_FAULT_OPERAND_INVALID); - return; - } - - if (ch->parent->periph_busy[periph_id]) { - ch->state = pl330_chan_waiting_periph; - ch->stall = 1; - } else if (ch->state == pl330_chan_waiting_periph) { - ch->state = pl330_chan_executing; - } -} - -static void pl330_dmawmb(PL330Chan *ch, uint8_t opcode, - uint8_t *args, int len) -{ - if (pl330_queue_find_insn(&ch->parent->write_queue, ch->tag, false)) { - ch->state = pl330_chan_at_barrier; - ch->stall = 1; - return; - } else { - ch->state = pl330_chan_executing; - } -} - -/* NULL terminated array of the instruction descriptions. */ -static const PL330InsnDesc insn_desc[] = { - { .opcode = 0x54, .opmask = 0xFD, .size = 3, .exec = pl330_dmaaddh, }, - { .opcode = 0x5c, .opmask = 0xFD, .size = 3, .exec = pl330_dmaadnh, }, - { .opcode = 0x00, .opmask = 0xFF, .size = 1, .exec = pl330_dmaend, }, - { .opcode = 0x35, .opmask = 0xFF, .size = 2, .exec = pl330_dmaflushp, }, - { .opcode = 0xA0, .opmask = 0xFD, .size = 6, .exec = pl330_dmago, }, - { .opcode = 0x04, .opmask = 0xFC, .size = 1, .exec = pl330_dmald, }, - { .opcode = 0x25, .opmask = 0xFD, .size = 2, .exec = pl330_dmaldp, }, - { .opcode = 0x20, .opmask = 0xFD, .size = 2, .exec = pl330_dmalp, }, - /* dmastp must be before dmalpend in this list, because their maps - * are overlapping - */ - { .opcode = 0x29, .opmask = 0xFD, .size = 2, .exec = pl330_dmastp, }, - { .opcode = 0x28, .opmask = 0xE8, .size = 2, .exec = pl330_dmalpend, }, - { .opcode = 0x01, .opmask = 0xFF, .size = 1, .exec = pl330_dmakill, }, - { .opcode = 0xBC, .opmask = 0xFF, .size = 6, .exec = pl330_dmamov, }, - { .opcode = 0x18, .opmask = 0xFF, .size = 1, .exec = pl330_dmanop, }, - { .opcode = 0x12, .opmask = 0xFF, .size = 1, .exec = pl330_dmarmb, }, - { .opcode = 0x34, .opmask = 0xFF, .size = 2, .exec = pl330_dmasev, }, - { .opcode = 0x08, .opmask = 0xFC, .size = 1, .exec = pl330_dmast, }, - { .opcode = 0x0C, .opmask = 0xFF, .size = 1, .exec = pl330_dmastz, }, - { .opcode = 0x36, .opmask = 0xFF, .size = 2, .exec = pl330_dmawfe, }, - { .opcode = 0x30, .opmask = 0xFC, .size = 2, .exec = pl330_dmawfp, }, - { .opcode = 0x13, .opmask = 0xFF, .size = 1, .exec = pl330_dmawmb, }, - { .opcode = 0x00, .opmask = 0x00, .size = 0, .exec = NULL, } -}; - -/* Instructions which can be issued via debug registers. */ -static const PL330InsnDesc debug_insn_desc[] = { - { .opcode = 0xA0, .opmask = 0xFD, .size = 6, .exec = pl330_dmago, }, - { .opcode = 0x01, .opmask = 0xFF, .size = 1, .exec = pl330_dmakill, }, - { .opcode = 0x34, .opmask = 0xFF, .size = 2, .exec = pl330_dmasev, }, - { .opcode = 0x00, .opmask = 0x00, .size = 0, .exec = NULL, } -}; - -static inline const PL330InsnDesc *pl330_fetch_insn(PL330Chan *ch) -{ - uint8_t opcode; - int i; - - dma_memory_read(&address_space_memory, ch->pc, &opcode, 1); - for (i = 0; insn_desc[i].size; i++) { - if ((opcode & insn_desc[i].opmask) == insn_desc[i].opcode) { - return &insn_desc[i]; - } - } - return NULL; -} - -static inline void pl330_exec_insn(PL330Chan *ch, const PL330InsnDesc *insn) -{ - uint8_t buf[PL330_INSN_MAXSIZE]; - - assert(insn->size <= PL330_INSN_MAXSIZE); - dma_memory_read(&address_space_memory, ch->pc, buf, insn->size); - insn->exec(ch, buf[0], &buf[1], insn->size - 1); -} - -static inline void pl330_update_pc(PL330Chan *ch, - const PL330InsnDesc *insn) -{ - ch->pc += insn->size; -} - -/* Try to execute current instruction in channel CH. Number of executed - instructions is returned (0 or 1). */ -static int pl330_chan_exec(PL330Chan *ch) -{ - const PL330InsnDesc *insn; - - if (ch->state != pl330_chan_executing && - ch->state != pl330_chan_waiting_periph && - ch->state != pl330_chan_at_barrier && - ch->state != pl330_chan_waiting_event) { - return 0; - } - ch->stall = 0; - insn = pl330_fetch_insn(ch); - if (!insn) { - DB_PRINT("pl330 undefined instruction\n"); - pl330_fault(ch, PL330_FAULT_UNDEF_INSTR); - return 0; - } - pl330_exec_insn(ch, insn); - if (!ch->stall) { - pl330_update_pc(ch, insn); - ch->watchdog_timer = 0; - return 1; - /* WDT only active in exec state */ - } else if (ch->state == pl330_chan_executing) { - ch->watchdog_timer++; - if (ch->watchdog_timer >= PL330_WATCHDOG_LIMIT) { - pl330_fault(ch, PL330_FAULT_LOCKUP_ERR); - } - } - return 0; -} - -/* Try to execute 1 instruction in each channel, one instruction from read - queue and one instruction from write queue. Number of successfully executed - instructions is returned. */ -static int pl330_exec_cycle(PL330Chan *channel) -{ - PL330State *s = channel->parent; - PL330QueueEntry *q; - int i; - int num_exec = 0; - int fifo_res = 0; - uint8_t buf[PL330_MAX_BURST_LEN]; - - /* Execute one instruction in each channel */ - num_exec += pl330_chan_exec(channel); - - /* Execute one instruction from read queue */ - q = pl330_queue_find_insn(&s->read_queue, PL330_UNTAGGED, true); - if (q != NULL && q->len <= pl330_fifo_num_free(&s->fifo)) { - int len = q->len - (q->addr & (q->len - 1)); - - dma_memory_read(&address_space_memory, q->addr, buf, len); - if (PL330_ERR_DEBUG > 1) { - DB_PRINT("PL330 read from memory @%08" PRIx32 " (size = %08x):\n", - q->addr, len); - qemu_hexdump((char *)buf, stderr, "", len); - } - fifo_res = pl330_fifo_push(&s->fifo, buf, len, q->tag); - if (fifo_res == PL330_FIFO_OK) { - if (q->inc) { - q->addr += len; - } - q->n--; - if (!q->n) { - pl330_queue_remove_insn(&s->read_queue, q); - } - num_exec++; - } - } - - /* Execute one instruction from write queue. */ - q = pl330_queue_find_insn(&s->write_queue, pl330_fifo_tag(&s->fifo), true); - if (q != NULL) { - int len = q->len - (q->addr & (q->len - 1)); - - if (q->z) { - for (i = 0; i < len; i++) { - buf[i] = 0; - } - } else { - fifo_res = pl330_fifo_get(&s->fifo, buf, len, q->tag); - } - if (fifo_res == PL330_FIFO_OK || q->z) { - dma_memory_write(&address_space_memory, q->addr, buf, len); - if (PL330_ERR_DEBUG > 1) { - DB_PRINT("PL330 read from memory @%08" PRIx32 - " (size = %08x):\n", q->addr, len); - qemu_hexdump((char *)buf, stderr, "", len); - } - if (q->inc) { - q->addr += len; - } - num_exec++; - } else if (fifo_res == PL330_FIFO_STALL) { - pl330_fault(&channel->parent->chan[q->tag], - PL330_FAULT_FIFOEMPTY_ERR); - } - q->n--; - if (!q->n) { - pl330_queue_remove_insn(&s->write_queue, q); - } - } - - return num_exec; -} - -static int pl330_exec_channel(PL330Chan *channel) -{ - int insr_exec = 0; - - /* TODO: Is it all right to execute everything or should we do per-cycle - simulation? */ - while (pl330_exec_cycle(channel)) { - insr_exec++; - } - - /* Detect deadlock */ - if (channel->state == pl330_chan_executing) { - pl330_fault(channel, PL330_FAULT_LOCKUP_ERR); - } - /* Situation when one of the queues has deadlocked but all channels - * have finished their programs should be impossible. - */ - - return insr_exec; -} - -static inline void pl330_exec(PL330State *s) -{ - DB_PRINT("\n"); - int i, insr_exec; - do { - insr_exec = pl330_exec_channel(&s->manager); - - for (i = 0; i < s->num_chnls; i++) { - insr_exec += pl330_exec_channel(&s->chan[i]); - } - } while (insr_exec); -} - -static void pl330_exec_cycle_timer(void *opaque) -{ - PL330State *s = (PL330State *)opaque; - pl330_exec(s); -} - -/* Stop or restore dma operations */ - -static void pl330_dma_stop_irq(void *opaque, int irq, int level) -{ - PL330State *s = (PL330State *)opaque; - - if (s->periph_busy[irq] != level) { - s->periph_busy[irq] = level; - timer_mod(s->timer, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL)); - } -} - -static void pl330_debug_exec(PL330State *s) -{ - uint8_t args[5]; - uint8_t opcode; - uint8_t chan_id; - int i; - PL330Chan *ch; - const PL330InsnDesc *insn; - - s->debug_status = 1; - chan_id = (s->dbg[0] >> 8) & 0x07; - opcode = (s->dbg[0] >> 16) & 0xff; - args[0] = (s->dbg[0] >> 24) & 0xff; - args[1] = (s->dbg[1] >> 0) & 0xff; - args[2] = (s->dbg[1] >> 8) & 0xff; - args[3] = (s->dbg[1] >> 16) & 0xff; - args[4] = (s->dbg[1] >> 24) & 0xff; - DB_PRINT("chan id: %" PRIx8 "\n", chan_id); - if (s->dbg[0] & 1) { - ch = &s->chan[chan_id]; - } else { - ch = &s->manager; - } - insn = NULL; - for (i = 0; debug_insn_desc[i].size; i++) { - if ((opcode & debug_insn_desc[i].opmask) == debug_insn_desc[i].opcode) { - insn = &debug_insn_desc[i]; - } - } - if (!insn) { - pl330_fault(ch, PL330_FAULT_UNDEF_INSTR | PL330_FAULT_DBG_INSTR); - return ; - } - ch->stall = 0; - insn->exec(ch, opcode, args, insn->size - 1); - if (ch->fault_type) { - ch->fault_type |= PL330_FAULT_DBG_INSTR; - } - if (ch->stall) { - qemu_log_mask(LOG_UNIMP, "pl330: stall of debug instruction not " - "implemented\n"); - } - s->debug_status = 0; -} - -/* IOMEM mapped registers */ - -static void pl330_iomem_write(void *opaque, hwaddr offset, - uint64_t value, unsigned size) -{ - PL330State *s = (PL330State *) opaque; - int i; - - DB_PRINT("addr: %08x data: %08x\n", (unsigned)offset, (unsigned)value); - - switch (offset) { - case PL330_REG_INTEN: - s->inten = value; - break; - case PL330_REG_INTCLR: - for (i = 0; i < s->num_events; i++) { - if (s->int_status & s->inten & value & (1 << i)) { - DB_PRINT("event interrupt lowered %d\n", i); - qemu_irq_lower(s->irq[i]); - } - } - s->ev_status &= ~(value & s->inten); - s->int_status &= ~(value & s->inten); - break; - case PL330_REG_DBGCMD: - if ((value & 3) == 0) { - pl330_debug_exec(s); - pl330_exec(s); - } else { - qemu_log_mask(LOG_GUEST_ERROR, "pl330: write of illegal value %u " - "for offset " TARGET_FMT_plx "\n", (unsigned)value, - offset); - } - break; - case PL330_REG_DBGINST0: - DB_PRINT("s->dbg[0] = %08x\n", (unsigned)value); - s->dbg[0] = value; - break; - case PL330_REG_DBGINST1: - DB_PRINT("s->dbg[1] = %08x\n", (unsigned)value); - s->dbg[1] = value; - break; - default: - qemu_log_mask(LOG_GUEST_ERROR, "pl330: bad write offset " TARGET_FMT_plx - "\n", offset); - break; - } -} - -static inline uint32_t pl330_iomem_read_imp(void *opaque, - hwaddr offset) -{ - PL330State *s = (PL330State *)opaque; - int chan_id; - int i; - uint32_t res; - - if (offset >= PL330_REG_PERIPH_ID && offset < PL330_REG_PERIPH_ID + 32) { - return pl330_id[(offset - PL330_REG_PERIPH_ID) >> 2]; - } - if (offset >= PL330_REG_CR0_BASE && offset < PL330_REG_CR0_BASE + 24) { - return s->cfg[(offset - PL330_REG_CR0_BASE) >> 2]; - } - if (offset >= PL330_REG_CHANCTRL && offset < PL330_REG_DBGSTATUS) { - offset -= PL330_REG_CHANCTRL; - chan_id = offset >> 5; - if (chan_id >= s->num_chnls) { - qemu_log_mask(LOG_GUEST_ERROR, "pl330: bad read offset " - TARGET_FMT_plx "\n", offset); - return 0; - } - switch (offset & 0x1f) { - case 0x00: - return s->chan[chan_id].src; - case 0x04: - return s->chan[chan_id].dst; - case 0x08: - return s->chan[chan_id].control; - case 0x0C: - return s->chan[chan_id].lc[0]; - case 0x10: - return s->chan[chan_id].lc[1]; - default: - qemu_log_mask(LOG_GUEST_ERROR, "pl330: bad read offset " - TARGET_FMT_plx "\n", offset); - return 0; - } - } - if (offset >= PL330_REG_CSR_BASE && offset < 0x400) { - offset -= PL330_REG_CSR_BASE; - chan_id = offset >> 3; - if (chan_id >= s->num_chnls) { - qemu_log_mask(LOG_GUEST_ERROR, "pl330: bad read offset " - TARGET_FMT_plx "\n", offset); - return 0; - } - switch ((offset >> 2) & 1) { - case 0x0: - res = (s->chan[chan_id].ns << 21) | - (s->chan[chan_id].wakeup << 4) | - (s->chan[chan_id].state) | - (s->chan[chan_id].wfp_sbp << 14); - return res; - case 0x1: - return s->chan[chan_id].pc; - default: - qemu_log_mask(LOG_GUEST_ERROR, "pl330: read error\n"); - return 0; - } - } - if (offset >= PL330_REG_FTR_BASE && offset < 0x100) { - offset -= PL330_REG_FTR_BASE; - chan_id = offset >> 2; - if (chan_id >= s->num_chnls) { - qemu_log_mask(LOG_GUEST_ERROR, "pl330: bad read offset " - TARGET_FMT_plx "\n", offset); - return 0; - } - return s->chan[chan_id].fault_type; - } - switch (offset) { - case PL330_REG_DSR: - return (s->manager.ns << 9) | (s->manager.wakeup << 4) | - (s->manager.state & 0xf); - case PL330_REG_DPC: - return s->manager.pc; - case PL330_REG_INTEN: - return s->inten; - case PL330_REG_INT_EVENT_RIS: - return s->ev_status; - case PL330_REG_INTMIS: - return s->int_status; - case PL330_REG_INTCLR: - /* Documentation says that we can't read this register - * but linux kernel does it - */ - return 0; - case PL330_REG_FSRD: - return s->manager.state ? 1 : 0; - case PL330_REG_FSRC: - res = 0; - for (i = 0; i < s->num_chnls; i++) { - if (s->chan[i].state == pl330_chan_fault || - s->chan[i].state == pl330_chan_fault_completing) { - res |= 1 << i; - } - } - return res; - case PL330_REG_FTRD: - return s->manager.fault_type; - case PL330_REG_DBGSTATUS: - return s->debug_status; - default: - qemu_log_mask(LOG_GUEST_ERROR, "pl330: bad read offset " - TARGET_FMT_plx "\n", offset); - } - return 0; -} - -static uint64_t pl330_iomem_read(void *opaque, hwaddr offset, - unsigned size) -{ - uint32_t ret = pl330_iomem_read_imp(opaque, offset); - DB_PRINT("addr: %08" HWADDR_PRIx " data: %08" PRIx32 "\n", offset, ret); - return ret; -} - -static const MemoryRegionOps pl330_ops = { - .read = pl330_iomem_read, - .write = pl330_iomem_write, - .endianness = DEVICE_NATIVE_ENDIAN, - .impl = { - .min_access_size = 4, - .max_access_size = 4, - } -}; - -/* Controller logic and initialization */ - -static void pl330_chan_reset(PL330Chan *ch) -{ - ch->src = 0; - ch->dst = 0; - ch->pc = 0; - ch->state = pl330_chan_stopped; - ch->watchdog_timer = 0; - ch->stall = 0; - ch->control = 0; - ch->status = 0; - ch->fault_type = 0; -} - -static void pl330_reset(DeviceState *d) -{ - int i; - PL330State *s = PL330(d); - - s->inten = 0; - s->int_status = 0; - s->ev_status = 0; - s->debug_status = 0; - s->num_faulting = 0; - s->manager.ns = s->mgr_ns_at_rst; - pl330_fifo_reset(&s->fifo); - pl330_queue_reset(&s->read_queue); - pl330_queue_reset(&s->write_queue); - - for (i = 0; i < s->num_chnls; i++) { - pl330_chan_reset(&s->chan[i]); - } - for (i = 0; i < s->num_periph_req; i++) { - s->periph_busy[i] = 0; - } - - timer_del(s->timer); -} - -static void pl330_realize(DeviceState *dev, Error **errp) -{ - int i; - PL330State *s = PL330(dev); - - sysbus_init_irq(SYS_BUS_DEVICE(dev), &s->irq_abort); - memory_region_init_io(&s->iomem, OBJECT(s), &pl330_ops, s, - "dma", PL330_IOMEM_SIZE); - sysbus_init_mmio(SYS_BUS_DEVICE(dev), &s->iomem); - - s->timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, pl330_exec_cycle_timer, s); - - s->cfg[0] = (s->mgr_ns_at_rst ? 0x4 : 0) | - (s->num_periph_req > 0 ? 1 : 0) | - ((s->num_chnls - 1) & 0x7) << 4 | - ((s->num_periph_req - 1) & 0x1f) << 12 | - ((s->num_events - 1) & 0x1f) << 17; - - switch (s->i_cache_len) { - case (4): - s->cfg[1] |= 2; - break; - case (8): - s->cfg[1] |= 3; - break; - case (16): - s->cfg[1] |= 4; - break; - case (32): - s->cfg[1] |= 5; - break; - default: - error_setg(errp, "Bad value for i-cache_len property: %" PRIx8, - s->i_cache_len); - return; - } - s->cfg[1] |= ((s->num_i_cache_lines - 1) & 0xf) << 4; - - s->chan = g_new0(PL330Chan, s->num_chnls); - s->hi_seqn = g_new0(uint8_t, s->num_chnls); - s->lo_seqn = g_new0(uint8_t, s->num_chnls); - for (i = 0; i < s->num_chnls; i++) { - s->chan[i].parent = s; - s->chan[i].tag = (uint8_t)i; - } - s->manager.parent = s; - s->manager.tag = s->num_chnls; - s->manager.is_manager = true; - - s->irq = g_new0(qemu_irq, s->num_events); - for (i = 0; i < s->num_events; i++) { - sysbus_init_irq(SYS_BUS_DEVICE(dev), &s->irq[i]); - } - - qdev_init_gpio_in(dev, pl330_dma_stop_irq, PL330_PERIPH_NUM); - - switch (s->data_width) { - case (32): - s->cfg[CFG_CRD] |= 0x2; - break; - case (64): - s->cfg[CFG_CRD] |= 0x3; - break; - case (128): - s->cfg[CFG_CRD] |= 0x4; - break; - default: - error_setg(errp, "Bad value for data_width property: %" PRIx8, - s->data_width); - return; - } - - s->cfg[CFG_CRD] |= ((s->wr_cap - 1) & 0x7) << 4 | - ((s->wr_q_dep - 1) & 0xf) << 8 | - ((s->rd_cap - 1) & 0x7) << 12 | - ((s->rd_q_dep - 1) & 0xf) << 16 | - ((s->data_buffer_dep - 1) & 0x1ff) << 20; - - pl330_queue_init(&s->read_queue, s->rd_q_dep, s); - pl330_queue_init(&s->write_queue, s->wr_q_dep, s); - pl330_fifo_init(&s->fifo, s->data_width / 4 * s->data_buffer_dep); -} - -static Property pl330_properties[] = { - /* CR0 */ - DEFINE_PROP_UINT32("num_chnls", PL330State, num_chnls, 8), - DEFINE_PROP_UINT8("num_periph_req", PL330State, num_periph_req, 4), - DEFINE_PROP_UINT8("num_events", PL330State, num_events, 16), - DEFINE_PROP_UINT8("mgr_ns_at_rst", PL330State, mgr_ns_at_rst, 0), - /* CR1 */ - DEFINE_PROP_UINT8("i-cache_len", PL330State, i_cache_len, 4), - DEFINE_PROP_UINT8("num_i-cache_lines", PL330State, num_i_cache_lines, 8), - /* CR2-4 */ - DEFINE_PROP_UINT32("boot_addr", PL330State, cfg[CFG_BOOT_ADDR], 0), - DEFINE_PROP_UINT32("INS", PL330State, cfg[CFG_INS], 0), - DEFINE_PROP_UINT32("PNS", PL330State, cfg[CFG_PNS], 0), - /* CRD */ - DEFINE_PROP_UINT8("data_width", PL330State, data_width, 64), - DEFINE_PROP_UINT8("wr_cap", PL330State, wr_cap, 8), - DEFINE_PROP_UINT8("wr_q_dep", PL330State, wr_q_dep, 16), - DEFINE_PROP_UINT8("rd_cap", PL330State, rd_cap, 8), - DEFINE_PROP_UINT8("rd_q_dep", PL330State, rd_q_dep, 16), - DEFINE_PROP_UINT16("data_buffer_dep", PL330State, data_buffer_dep, 256), - - DEFINE_PROP_END_OF_LIST(), -}; - -static void pl330_class_init(ObjectClass *klass, void *data) -{ - DeviceClass *dc = DEVICE_CLASS(klass); - - dc->realize = pl330_realize; - dc->reset = pl330_reset; - dc->props = pl330_properties; - dc->vmsd = &vmstate_pl330; -} - -static const TypeInfo pl330_type_info = { - .name = TYPE_PL330, - .parent = TYPE_SYS_BUS_DEVICE, - .instance_size = sizeof(PL330State), - .class_init = pl330_class_init, -}; - -static void pl330_register_types(void) -{ - type_register_static(&pl330_type_info); -} - -type_init(pl330_register_types) |