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author | 2015-08-28 09:58:54 +0800 | |
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committer | 2015-09-01 12:44:00 +0800 | |
commit | e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb (patch) | |
tree | 66b09f592c55df2878107a468a91d21506104d3f /qemu/roms/openbios/drivers/cuda.c | |
parent | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (diff) |
Add qemu 2.4.0
Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>
Diffstat (limited to 'qemu/roms/openbios/drivers/cuda.c')
-rw-r--r-- | qemu/roms/openbios/drivers/cuda.c | 424 |
1 files changed, 424 insertions, 0 deletions
diff --git a/qemu/roms/openbios/drivers/cuda.c b/qemu/roms/openbios/drivers/cuda.c new file mode 100644 index 000000000..9555dea49 --- /dev/null +++ b/qemu/roms/openbios/drivers/cuda.c @@ -0,0 +1,424 @@ +#include "config.h" +#include "libopenbios/bindings.h" +#include "drivers/drivers.h" +#include "libc/byteorder.h" +#include "libc/vsprintf.h" + +#include "macio.h" +#include "cuda.h" + +//#define DEBUG_CUDA +#ifdef DEBUG_CUDA +#define CUDA_DPRINTF(fmt, args...) \ + do { printk("CUDA - %s: " fmt, __func__ , ##args); } while (0) +#else +#define CUDA_DPRINTF(fmt, args...) do { } while (0) +#endif + +#define IO_CUDA_OFFSET 0x00016000 +#define IO_CUDA_SIZE 0x00002000 + +/* VIA registers - spaced 0x200 bytes apart */ +#define RS 0x200 /* skip between registers */ +#define B 0 /* B-side data */ +#define A RS /* A-side data */ +#define DIRB (2*RS) /* B-side direction (1=output) */ +#define DIRA (3*RS) /* A-side direction (1=output) */ +#define T1CL (4*RS) /* Timer 1 ctr/latch (low 8 bits) */ +#define T1CH (5*RS) /* Timer 1 counter (high 8 bits) */ +#define T1LL (6*RS) /* Timer 1 latch (low 8 bits) */ +#define T1LH (7*RS) /* Timer 1 latch (high 8 bits) */ +#define T2CL (8*RS) /* Timer 2 ctr/latch (low 8 bits) */ +#define T2CH (9*RS) /* Timer 2 counter (high 8 bits) */ +#define SR (10*RS) /* Shift register */ +#define ACR (11*RS) /* Auxiliary control register */ +#define PCR (12*RS) /* Peripheral control register */ +#define IFR (13*RS) /* Interrupt flag register */ +#define IER (14*RS) /* Interrupt enable register */ +#define ANH (15*RS) /* A-side data, no handshake */ + +/* Bits in B data register: all active low */ +#define TREQ 0x08 /* Transfer request (input) */ +#define TACK 0x10 /* Transfer acknowledge (output) */ +#define TIP 0x20 /* Transfer in progress (output) */ + +/* Bits in ACR */ +#define SR_CTRL 0x1c /* Shift register control bits */ +#define SR_EXT 0x0c /* Shift on external clock */ +#define SR_OUT 0x10 /* Shift out if 1 */ + +/* Bits in IFR and IER */ +#define IER_SET 0x80 /* set bits in IER */ +#define IER_CLR 0 /* clear bits in IER */ +#define SR_INT 0x04 /* Shift register full/empty */ + +#define CUDA_BUF_SIZE 16 + +#define ADB_PACKET 0 +#define CUDA_PACKET 1 + +/* CUDA commands (2nd byte) */ +#define CUDA_GET_TIME 0x03 +#define CUDA_SET_TIME 0x09 +#define CUDA_POWERDOWN 0x0a +#define CUDA_RESET_SYSTEM 0x11 + +static uint8_t cuda_readb (cuda_t *dev, int reg) +{ + return *(volatile uint8_t *)(dev->base + reg); +} + +static void cuda_writeb (cuda_t *dev, int reg, uint8_t val) +{ + *(volatile uint8_t *)(dev->base + reg) = val; +} + +static void cuda_wait_irq (cuda_t *dev) +{ + int val; + +// CUDA_DPRINTF("\n"); + for(;;) { + val = cuda_readb(dev, IFR); + cuda_writeb(dev, IFR, val & 0x7f); + if (val & SR_INT) + break; + } +} + + + +static int cuda_request (cuda_t *dev, uint8_t pkt_type, const uint8_t *buf, + int buf_len, uint8_t *obuf) +{ + int i, obuf_len, val; + + cuda_writeb(dev, ACR, cuda_readb(dev, ACR) | SR_OUT); + cuda_writeb(dev, SR, pkt_type); + cuda_writeb(dev, B, cuda_readb(dev, B) & ~TIP); + if (buf) { + //CUDA_DPRINTF("Send buf len: %d\n", buf_len); + /* send 'buf' */ + for(i = 0; i < buf_len; i++) { + cuda_wait_irq(dev); + cuda_writeb(dev, SR, buf[i]); + cuda_writeb(dev, B, cuda_readb(dev, B) ^ TACK); + } + } + cuda_wait_irq(dev); + cuda_writeb(dev, ACR, cuda_readb(dev, ACR) & ~SR_OUT); + cuda_readb(dev, SR); + cuda_writeb(dev, B, cuda_readb(dev, B) | TIP | TACK); + + obuf_len = 0; + if (obuf) { + cuda_wait_irq(dev); + cuda_readb(dev, SR); + cuda_writeb(dev, B, cuda_readb(dev, B) & ~TIP); + for(;;) { + cuda_wait_irq(dev); + val = cuda_readb(dev, SR); + if (obuf_len < CUDA_BUF_SIZE) + obuf[obuf_len++] = val; + if (cuda_readb(dev, B) & TREQ) + break; + cuda_writeb(dev, B, cuda_readb(dev, B) ^ TACK); + } + cuda_writeb(dev, B, cuda_readb(dev, B) | TIP | TACK); + + cuda_wait_irq(dev); + cuda_readb(dev, SR); + } +// CUDA_DPRINTF("Got len: %d\n", obuf_len); + + return obuf_len; +} + + + +static int cuda_adb_req (void *host, const uint8_t *snd_buf, int len, + uint8_t *rcv_buf) +{ + uint8_t buffer[CUDA_BUF_SIZE], *pos; + + // CUDA_DPRINTF("len: %d %02x\n", len, snd_buf[0]); + len = cuda_request(host, ADB_PACKET, snd_buf, len, buffer); + if (len > 1 && buffer[0] == ADB_PACKET) { + pos = buffer + 2; + len -= 2; + } else { + pos = buffer + 1; + len = -1; + } + memcpy(rcv_buf, pos, len); + + return len; +} + + +DECLARE_UNNAMED_NODE(ob_cuda, INSTALL_OPEN, sizeof(int)); + +static cuda_t *main_cuda; + +static void +ppc32_reset_all(void) +{ + uint8_t cmdbuf[2], obuf[64]; + + cmdbuf[0] = CUDA_RESET_SYSTEM; + cuda_request(main_cuda, CUDA_PACKET, cmdbuf, sizeof(cmdbuf), obuf); +} + +static void +ppc32_poweroff(void) +{ + uint8_t cmdbuf[2], obuf[64]; + + cmdbuf[0] = CUDA_POWERDOWN; + cuda_request(main_cuda, CUDA_PACKET, cmdbuf, sizeof(cmdbuf), obuf); +} + +static void +ob_cuda_initialize (int *idx) +{ + phandle_t ph=get_cur_dev(); + int props[2]; + + push_str("via-cuda"); + fword("device-type"); + + set_int_property(ph, "#address-cells", 1); + set_int_property(ph, "#size-cells", 0); + + set_property(ph, "compatible", "cuda", 5); + + props[0] = __cpu_to_be32(IO_CUDA_OFFSET); + props[1] = __cpu_to_be32(IO_CUDA_SIZE); + + set_property(ph, "reg", (char *)&props, sizeof(props)); + + /* on newworld machines the cuda is on interrupt 0x19 */ + + props[0] = 0x19; + props[1] = 0; + NEWWORLD(set_property(ph, "interrupts", (char *)props, sizeof(props))); + NEWWORLD(set_int_property(ph, "#interrupt-cells", 2)); + + /* we emulate an oldworld hardware, so we must use + * non-standard oldworld property (needed by linux 2.6.18) + */ + + OLDWORLD(set_int_property(ph, "AAPL,interrupts", 0x12)); + + bind_func("ppc32-reset-all", ppc32_reset_all); + push_str("' ppc32-reset-all to reset-all"); + fword("eval"); +} + +static void +ob_cuda_open(int *idx) +{ + RET(-1); +} + +static void +ob_cuda_close(int *idx) +{ +} + +NODE_METHODS(ob_cuda) = { + { NULL, ob_cuda_initialize }, + { "open", ob_cuda_open }, + { "close", ob_cuda_close }, +}; + +DECLARE_UNNAMED_NODE(rtc, INSTALL_OPEN, sizeof(int)); + +static void +rtc_open(int *idx) +{ + RET(-1); +} + +/* + * get-time ( -- second minute hour day month year ) + * + */ + +static const int days_month[12] = + { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }; +static const int days_month_leap[12] = + { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }; + +static inline int is_leap(int year) +{ + return ((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0); +} + +static void +rtc_get_time(int *idx) +{ + uint8_t cmdbuf[2], obuf[64]; + ucell second, minute, hour, day, month, year; + uint32_t now; + int current; + const int *days; + + cmdbuf[0] = CUDA_GET_TIME; + cuda_request(main_cuda, CUDA_PACKET, cmdbuf, sizeof(cmdbuf), obuf); + + /* seconds since 01/01/1904 */ + + now = (obuf[3] << 24) + (obuf[4] << 16) + (obuf[5] << 8) + obuf[6]; + + second = now % 60; + now /= 60; + + minute = now % 60; + now /= 60; + + hour = now % 24; + now /= 24; + + year = now * 100 / 36525; + now -= year * 36525 / 100; + year += 1904; + + days = is_leap(year) ? days_month_leap : days_month; + + current = 0; + month = 0; + while (month < 12) { + if (now <= current + days[month]) { + break; + } + current += days[month]; + month++; + } + month++; + + day = now - current; + + PUSH(second); + PUSH(minute); + PUSH(hour); + PUSH(day); + PUSH(month); + PUSH(year); +} + +/* + * set-time ( second minute hour day month year -- ) + * + */ + +static void +rtc_set_time(int *idx) +{ + uint8_t cmdbuf[5], obuf[3]; + ucell second, minute, hour, day, month, year; + const int *days; + uint32_t now; + unsigned int nb_days; + int i; + + year = POP(); + month = POP(); + day = POP(); + hour = POP(); + minute = POP(); + second = POP(); + + days = is_leap(year) ? days_month_leap : days_month; + nb_days = (year - 1904) * 36525 / 100 + day; + for (i = 0; i < month - 1; i++) + nb_days += days[i]; + + now = (((nb_days * 24) + hour) * 60 + minute) * 60 + second; + + cmdbuf[0] = CUDA_SET_TIME; + cmdbuf[1] = now >> 24; + cmdbuf[2] = now >> 16; + cmdbuf[3] = now >> 8; + cmdbuf[4] = now; + + cuda_request(main_cuda, CUDA_PACKET, cmdbuf, sizeof(cmdbuf), obuf); +} + +NODE_METHODS(rtc) = { + { "open", rtc_open }, + { "get-time", rtc_get_time }, + { "set-time", rtc_set_time }, +}; + +static void +rtc_init(char *path) +{ + phandle_t ph, aliases; + char buf[64]; + + snprintf(buf, sizeof(buf), "%s/rtc", path); + REGISTER_NAMED_NODE(rtc, buf); + + ph = find_dev(buf); + set_property(ph, "device_type", "rtc", 4); + set_property(ph, "compatible", "rtc", 4); + + aliases = find_dev("/aliases"); + set_property(aliases, "rtc", buf, strlen(buf) + 1); + +} + +static void +powermgt_init(char *path) +{ + phandle_t ph; + char buf[64]; + + snprintf(buf, sizeof(buf), "%s/power-mgt", path); + REGISTER_NAMED_NODE(rtc, buf); + + ph = find_dev(buf); + set_property(ph, "device_type", "power-mgt", 10); + set_property(ph, "compatible", "power-mgt", 10); +} + +cuda_t *cuda_init (const char *path, phys_addr_t base) +{ + cuda_t *cuda; + char buf[64]; + phandle_t aliases; + + base += IO_CUDA_OFFSET; + CUDA_DPRINTF(" base=" FMT_plx "\n", base); + cuda = malloc(sizeof(cuda_t)); + if (cuda == NULL) + return NULL; + + snprintf(buf, sizeof(buf), "%s/via-cuda", path); + REGISTER_NAMED_NODE(ob_cuda, buf); + + aliases = find_dev("/aliases"); + set_property(aliases, "via-cuda", buf, strlen(buf) + 1); + + cuda->base = base; + cuda_writeb(cuda, B, cuda_readb(cuda, B) | TREQ | TIP); +#ifdef CONFIG_DRIVER_ADB + cuda->adb_bus = adb_bus_new(cuda, &cuda_adb_req); + if (cuda->adb_bus == NULL) { + free(cuda); + return NULL; + } + adb_bus_init(buf, cuda->adb_bus); +#endif + + rtc_init(buf); + powermgt_init(buf); + + main_cuda = cuda; + + device_end(); + bind_func("poweroff", ppc32_poweroff); + + return cuda; +} |