diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Makefile.am | 1 | ||||
| -rw-r--r-- | lib/intel_gpu_tools.h | 3 | ||||
| -rw-r--r-- | lib/intel_iosf.c | 85 | ||||
| -rw-r--r-- | lib/intel_reg.h | 16 |
4 files changed, 105 insertions, 0 deletions
diff --git a/lib/Makefile.am b/lib/Makefile.am index d8f081fe..387141bf 100644 --- a/lib/Makefile.am +++ b/lib/Makefile.am @@ -30,6 +30,7 @@ libintel_tools_la_SOURCES = \ rendercopy.h \ intel_reg_map.c \ intel_dpio.c \ + intel_iosf.c \ $(NULL) LDADD = $(CAIRO_LIBS) diff --git a/lib/intel_gpu_tools.h b/lib/intel_gpu_tools.h index ced84c87..88c3eb4f 100644 --- a/lib/intel_gpu_tools.h +++ b/lib/intel_gpu_tools.h @@ -49,6 +49,9 @@ void intel_register_write(uint32_t reg, uint32_t val); uint32_t intel_dpio_reg_read(uint32_t reg); void intel_dpio_reg_write(uint32_t reg, uint32_t val); +int intel_punit_read(uint8_t addr, uint32_t *val); +int intel_nc_read(uint8_t addr, uint32_t *val); + #define INTEL_RANGE_RSVD (0<<0) /* Shouldn't be read or written */ #define INTEL_RANGE_READ (1<<0) #define INTEL_RANGE_WRITE (1<<1) diff --git a/lib/intel_iosf.c b/lib/intel_iosf.c new file mode 100644 index 00000000..0ab14df0 --- /dev/null +++ b/lib/intel_iosf.c @@ -0,0 +1,85 @@ +#include <unistd.h> +#include <stdlib.h> +#include <stdio.h> +#include <err.h> +#include <errno.h> +#include "intel_gpu_tools.h" + +#define TIMEOUT_US 500000 + +static int vlv_punit_rw(uint32_t port, uint8_t opcode, uint8_t addr, + uint32_t *val) +{ + volatile uint32_t *ptr; + int timeout = 0; + uint32_t cmd, devfn, be, bar; + + bar = 0; + be = 0xf; + devfn = 16; + + cmd = (devfn << IOSF_DEVFN_SHIFT) | (opcode << IOSF_OPCODE_SHIFT) | + (port << IOSF_PORT_SHIFT) | (be << IOSF_BYTE_ENABLES_SHIFT) | + (bar << IOSF_BAR_SHIFT); + + ptr = (volatile uint32_t*)((volatile char*)mmio + + VLV_IOSF_DOORBELL_REQ); + + if (*ptr & IOSF_SB_BUSY) { + fprintf(stderr, "warning: pcode (%s) mailbox access failed\n", + opcode == PUNIT_OPCODE_REG_READ ? + "read" : "write"); + return -EAGAIN; + } + + ptr = (volatile uint32_t*)((volatile char*)mmio + VLV_IOSF_ADDR); + *ptr = addr; + if (opcode == PUNIT_OPCODE_REG_WRITE) { + ptr = (volatile uint32_t*)((volatile char*)mmio + + VLV_IOSF_DATA); + *ptr = *val; + } + ptr = (volatile uint32_t*)((volatile char*)mmio + + VLV_IOSF_DOORBELL_REQ); + *ptr = cmd; + do { + usleep(1); + timeout++; + } while ((*ptr & IOSF_SB_BUSY) && timeout < TIMEOUT_US); + + if (timeout >= TIMEOUT_US) { + fprintf(stderr, "timeout waiting for pcode %s (%d) to finish\n", + opcode == PUNIT_OPCODE_REG_READ ? "read" : "write", + addr); + return -ETIMEDOUT; + } + + if (opcode == PUNIT_OPCODE_REG_READ) { + ptr = (volatile uint32_t*)((volatile char*)mmio + + VLV_IOSF_DATA); + *val = *ptr; + } + *ptr = 0; + + return 0; +} + +int intel_punit_read(uint8_t addr, uint32_t *val) +{ + return vlv_punit_rw(IOSF_PORT_PUNIT, PUNIT_OPCODE_REG_READ, addr, val); +} + +int intel_punit_write(uint8_t addr, uint32_t val) +{ + return vlv_punit_rw(IOSF_PORT_PUNIT, PUNIT_OPCODE_REG_WRITE, addr, &val); +} + +int intel_nc_read(uint8_t addr, uint32_t *val) +{ + return vlv_punit_rw(IOSF_PORT_NC, PUNIT_OPCODE_REG_READ, addr, val); +} + +int intel_nc_write(uint8_t addr, uint32_t val) +{ + return vlv_punit_rw(IOSF_PORT_NC, PUNIT_OPCODE_REG_WRITE, addr, &val); +} diff --git a/lib/intel_reg.h b/lib/intel_reg.h index e0752617..e36aa7b4 100644 --- a/lib/intel_reg.h +++ b/lib/intel_reg.h @@ -3798,4 +3798,20 @@ typedef enum { #define DPIO_DATA 0x2104 #define DPIO_REG 0x2108 +/* VLV IOSF access */ +#define VLV_IOSF_DOORBELL_REQ 0x182100 +#define IOSF_DEVFN_SHIFT 24 +#define IOSF_OPCODE_SHIFT 16 +#define IOSF_PORT_SHIFT 8 +#define IOSF_BYTE_ENABLES_SHIFT 4 +#define IOSF_BAR_SHIFT 1 +#define IOSF_SB_BUSY (1<<0) +#define IOSF_PORT_PUNIT 0x4 +#define IOSF_PORT_NC 0x11 +#define VLV_IOSF_DATA 0x182104 +#define VLV_IOSF_ADDR 0x182108 + +#define PUNIT_OPCODE_REG_READ 6 +#define PUNIT_OPCODE_REG_WRITE 7 + #endif /* _I810_REG_H */ |