* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ * with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include "hw.h"
#include "i2c.h"
#include "omap.h"
struct omap_i2c_s {
+ MemoryRegion iomem;
qemu_irq irq;
qemu_irq drq[2];
- i2c_slave slave;
i2c_bus *bus;
uint8_t revision;
qemu_set_irq(s->drq[1], (s->stat >> 4) & 1); /* XRDY */
}
-/* These are only stubs now. */
-static void omap_i2c_event(i2c_slave *i2c, enum i2c_event event)
-{
- struct omap_i2c_s *s = (struct omap_i2c_s *) i2c;
-
- if ((~s->control >> 15) & 1) /* I2C_EN */
- return;
-
- switch (event) {
- case I2C_START_SEND:
- case I2C_START_RECV:
- s->stat |= 1 << 9; /* AAS */
- break;
- case I2C_FINISH:
- s->stat |= 1 << 2; /* ARDY */
- break;
- case I2C_NACK:
- s->stat |= 1 << 1; /* NACK */
- break;
- }
-
- omap_i2c_interrupts_update(s);
-}
-
-static int omap_i2c_rx(i2c_slave *i2c)
-{
- struct omap_i2c_s *s = (struct omap_i2c_s *) i2c;
- uint8_t ret = 0;
-
- if ((~s->control >> 15) & 1) /* I2C_EN */
- return -1;
-
- if (s->txlen)
- ret = s->fifo >> ((-- s->txlen) << 3) & 0xff;
- else
- s->stat |= 1 << 10; /* XUDF */
- s->stat |= 1 << 4; /* XRDY */
-
- omap_i2c_interrupts_update(s);
- return ret;
-}
-
-static int omap_i2c_tx(i2c_slave *i2c, uint8_t data)
-{
- struct omap_i2c_s *s = (struct omap_i2c_s *) i2c;
-
- if ((~s->control >> 15) & 1) /* I2C_EN */
- return 1;
-
- if (s->rxlen < 4)
- s->fifo |= data << ((s->rxlen ++) << 3);
- else
- s->stat |= 1 << 11; /* ROVR */
- s->stat |= 1 << 3; /* RRDY */
-
- omap_i2c_interrupts_update(s);
- return 1;
-}
-
static void omap_i2c_fifo_run(struct omap_i2c_s *s)
{
int ack = 1;
if (s->rxlen > 2)
s->fifo >>= 16;
s->rxlen -= 2;
- } else
- /* XXX: remote access (qualifier) error - what's that? */;
+ } else {
+ /* XXX: remote access (qualifier) error - what's that? */
+ }
if (!s->rxlen) {
s->stat &= ~(1 << 3); /* RRDY */
if (((s->control >> 10) & 1) && /* MST */
case 0x28: /* I2C_OA */
s->addr[0] = value & 0x3ff;
- i2c_set_slave_address(&s->slave, value & 0x7f);
break;
case 0x2c: /* I2C_SA */
}
}
-static CPUReadMemoryFunc *omap_i2c_readfn[] = {
- omap_badwidth_read16,
- omap_i2c_read,
- omap_badwidth_read16,
-};
-
-static CPUWriteMemoryFunc *omap_i2c_writefn[] = {
- omap_i2c_writeb, /* Only the last fifo write can be 8 bit. */
- omap_i2c_write,
- omap_badwidth_write16,
+static const MemoryRegionOps omap_i2c_ops = {
+ .old_mmio = {
+ .read = {
+ omap_badwidth_read16,
+ omap_i2c_read,
+ omap_badwidth_read16,
+ },
+ .write = {
+ omap_i2c_writeb, /* Only the last fifo write can be 8 bit. */
+ omap_i2c_write,
+ omap_badwidth_write16,
+ },
+ },
+ .endianness = DEVICE_NATIVE_ENDIAN,
};
-struct omap_i2c_s *omap_i2c_init(target_phys_addr_t base,
- qemu_irq irq, qemu_irq *dma, omap_clk clk)
+struct omap_i2c_s *omap_i2c_init(MemoryRegion *sysmem,
+ target_phys_addr_t base,
+ qemu_irq irq,
+ qemu_irq *dma,
+ omap_clk clk)
{
- int iomemtype;
struct omap_i2c_s *s = (struct omap_i2c_s *)
- qemu_mallocz(sizeof(struct omap_i2c_s));
+ g_malloc0(sizeof(struct omap_i2c_s));
/* TODO: set a value greater or equal to real hardware */
s->revision = 0x11;
s->irq = irq;
s->drq[0] = dma[0];
s->drq[1] = dma[1];
- s->slave.event = omap_i2c_event;
- s->slave.recv = omap_i2c_rx;
- s->slave.send = omap_i2c_tx;
- s->bus = i2c_init_bus();
+ s->bus = i2c_init_bus(NULL, "i2c");
omap_i2c_reset(s);
- iomemtype = cpu_register_io_memory(0, omap_i2c_readfn,
- omap_i2c_writefn, s);
- cpu_register_physical_memory(base, 0x800, iomemtype);
+ memory_region_init_io(&s->iomem, &omap_i2c_ops, s, "omap.i2c", 0x800);
+ memory_region_add_subregion(sysmem, base, &s->iomem);
return s;
}
struct omap_i2c_s *omap2_i2c_init(struct omap_target_agent_s *ta,
qemu_irq irq, qemu_irq *dma, omap_clk fclk, omap_clk iclk)
{
- int iomemtype;
struct omap_i2c_s *s = (struct omap_i2c_s *)
- qemu_mallocz(sizeof(struct omap_i2c_s));
+ g_malloc0(sizeof(struct omap_i2c_s));
s->revision = 0x34;
s->irq = irq;
s->drq[0] = dma[0];
s->drq[1] = dma[1];
- s->slave.event = omap_i2c_event;
- s->slave.recv = omap_i2c_rx;
- s->slave.send = omap_i2c_tx;
- s->bus = i2c_init_bus();
+ s->bus = i2c_init_bus(NULL, "i2c");
omap_i2c_reset(s);
- iomemtype = l4_register_io_memory(0, omap_i2c_readfn,
- omap_i2c_writefn, s);
- omap_l4_attach(ta, 0, iomemtype);
+ memory_region_init_io(&s->iomem, &omap_i2c_ops, s, "omap2.i2c",
+ omap_l4_region_size(ta, 0));
+ omap_l4_attach(ta, 0, &s->iomem);
return s;
}
projects / qemu.git / blobdiff