diff options
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/ppc/pnv.c | 6 | ||||
| -rw-r--r-- | hw/ppc/pnv_i2c.c | 52 |
2 files changed, 30 insertions, 28 deletions
diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c index 9c29727337..0297871bdd 100644 --- a/hw/ppc/pnv.c +++ b/hw/ppc/pnv.c @@ -1623,7 +1623,8 @@ static void pnv_chip_power9_realize(DeviceState *dev, Error **errp) return; } pnv_xscom_add_subregion(chip, PNV9_XSCOM_I2CM_BASE + - chip9->i2c[i].engine * PNV9_XSCOM_I2CM_SIZE, + (chip9->i2c[i].engine - 1) * + PNV9_XSCOM_I2CM_SIZE, &chip9->i2c[i].xscom_regs); qdev_connect_gpio_out(DEVICE(&chip9->i2c[i]), 0, qdev_get_gpio_in(DEVICE(&chip9->psi), @@ -1871,7 +1872,8 @@ static void pnv_chip_power10_realize(DeviceState *dev, Error **errp) return; } pnv_xscom_add_subregion(chip, PNV10_XSCOM_I2CM_BASE + - chip10->i2c[i].engine * PNV10_XSCOM_I2CM_SIZE, + (chip10->i2c[i].engine - 1) * + PNV10_XSCOM_I2CM_SIZE, &chip10->i2c[i].xscom_regs); qdev_connect_gpio_out(DEVICE(&chip10->i2c[i]), 0, qdev_get_gpio_in(DEVICE(&chip10->psi), diff --git a/hw/ppc/pnv_i2c.c b/hw/ppc/pnv_i2c.c index f75e59e709..656a48eebe 100644 --- a/hw/ppc/pnv_i2c.c +++ b/hw/ppc/pnv_i2c.c @@ -151,6 +151,7 @@ #define I2C_RESET_S_SDA_REG 0x11 #define PNV_I2C_FIFO_SIZE 8 +#define PNV_I2C_MAX_BUSSES 64 static I2CBus *pnv_i2c_get_bus(PnvI2C *i2c) { @@ -437,7 +438,7 @@ static uint64_t pnv_i2c_xscom_read(void *opaque, hwaddr addr, case I2C_PORT_BUSY_REG: /* compute busy bit for each port */ val = 0; for (i = 0; i < i2c->num_busses; i++) { - val |= i2c_bus_busy(i2c->busses[i]) << i; + val |= (uint64_t)i2c_bus_busy(i2c->busses[i]) << i; } break; @@ -462,6 +463,23 @@ static uint64_t pnv_i2c_xscom_read(void *opaque, hwaddr addr, return val; } +static void pnv_i2c_reset(void *dev) +{ + PnvI2C *i2c = PNV_I2C(dev); + + memset(i2c->regs, 0, sizeof(i2c->regs)); + + i2c->regs[I2C_STAT_REG] = + SETFIELD(I2C_STAT_UPPER_THRS, 0ull, i2c->num_busses - 1) | + I2C_STAT_CMD_COMP | I2C_STAT_SCL_INPUT_LEVEL | + I2C_STAT_SDA_INPUT_LEVEL; + i2c->regs[I2C_EXTD_STAT_REG] = + SETFIELD(I2C_EXTD_STAT_FIFO_SIZE, 0ull, PNV_I2C_FIFO_SIZE) | + SETFIELD(I2C_EXTD_STAT_I2C_VERSION, 0ull, 23); /* last version */ + + fifo8_reset(&i2c->fifo); +} + static void pnv_i2c_xscom_write(void *opaque, hwaddr addr, uint64_t val, unsigned size) { @@ -499,16 +517,7 @@ static void pnv_i2c_xscom_write(void *opaque, hwaddr addr, break; case I2C_RESET_I2C_REG: - i2c->regs[I2C_MODE_REG] = 0; - i2c->regs[I2C_CMD_REG] = 0; - i2c->regs[I2C_WATERMARK_REG] = 0; - i2c->regs[I2C_INTR_MASK_REG] = 0; - i2c->regs[I2C_INTR_COND_REG] = 0; - i2c->regs[I2C_INTR_RAW_COND_REG] = 0; - i2c->regs[I2C_STAT_REG] = 0; - i2c->regs[I2C_RESIDUAL_LEN_REG] = 0; - i2c->regs[I2C_EXTD_STAT_REG] &= - (I2C_EXTD_STAT_FIFO_SIZE | I2C_EXTD_STAT_I2C_VERSION); + pnv_i2c_reset(i2c); break; case I2C_RESET_ERRORS: @@ -593,7 +602,7 @@ static int pnv_i2c_dt_xscom(PnvXScomInterface *dev, void *fdt, int i2c_offset; const char i2c_compat[] = "ibm,power8-i2cm\0ibm,power9-i2cm"; uint32_t i2c_pcba = PNV9_XSCOM_I2CM_BASE + - i2c->engine * PNV9_XSCOM_I2CM_SIZE; + (i2c->engine - 1) * PNV9_XSCOM_I2CM_SIZE; uint32_t reg[2] = { cpu_to_be32(i2c_pcba), cpu_to_be32(PNV9_XSCOM_I2CM_SIZE) @@ -620,20 +629,6 @@ static int pnv_i2c_dt_xscom(PnvXScomInterface *dev, void *fdt, return 0; } -static void pnv_i2c_reset(void *dev) -{ - PnvI2C *i2c = PNV_I2C(dev); - - memset(i2c->regs, 0, sizeof(i2c->regs)); - - i2c->regs[I2C_STAT_REG] = I2C_STAT_CMD_COMP; - i2c->regs[I2C_EXTD_STAT_REG] = - SETFIELD(I2C_EXTD_STAT_FIFO_SIZE, 0ull, PNV_I2C_FIFO_SIZE) | - SETFIELD(I2C_EXTD_STAT_I2C_VERSION, 0ull, 23); /* last version */ - - fifo8_reset(&i2c->fifo); -} - static void pnv_i2c_realize(DeviceState *dev, Error **errp) { PnvI2C *i2c = PNV_I2C(dev); @@ -641,6 +636,11 @@ static void pnv_i2c_realize(DeviceState *dev, Error **errp) assert(i2c->chip); + if (i2c->num_busses > PNV_I2C_MAX_BUSSES) { + error_setg(errp, "Invalid number of busses: %u", i2c->num_busses); + return; + } + pnv_xscom_region_init(&i2c->xscom_regs, OBJECT(i2c), &pnv_i2c_xscom_ops, i2c, "xscom-i2c", PNV9_XSCOM_I2CM_SIZE); |