diff options
Diffstat (limited to 'sys/arm/mv/armada38x/armada38x.c')
| -rw-r--r-- | sys/arm/mv/armada38x/armada38x.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/sys/arm/mv/armada38x/armada38x.c b/sys/arm/mv/armada38x/armada38x.c index ae4d459ec774..ebb9fdc720e5 100644 --- a/sys/arm/mv/armada38x/armada38x.c +++ b/sys/arm/mv/armada38x/armada38x.c @@ -41,6 +41,7 @@ __FBSDID("$FreeBSD$"); int armada38x_open_bootrom_win(void); int armada38x_scu_enable(void); int armada38x_win_set_iosync_barrier(void); +int armada38x_mbus_optimization(void); uint32_t get_tclk(void) @@ -115,6 +116,50 @@ armada38x_open_bootrom_win(void) } int +armada38x_mbus_optimization(void) +{ + bus_space_handle_t vaddr_iowind; + int rv; + + rv = bus_space_map(fdtbus_bs_tag, (bus_addr_t)MV_MBUS_CTRL_BASE, + MV_MBUS_CTRL_REGS_LEN, 0, &vaddr_iowind); + if (rv != 0) + return (rv); + + /* + * MBUS Units Priority Control Register - Prioritize XOR, + * PCIe and GbEs (ID=4,6,3,7,8) DRAM access + * GbE is High and others are Medium. + */ + bus_space_write_4(fdtbus_bs_tag, vaddr_iowind, 0, 0x19180); + + /* + * Fabric Units Priority Control Register - + * Prioritize CPUs requests. + */ + bus_space_write_4(fdtbus_bs_tag, vaddr_iowind, 0x4, 0x3000A); + + /* + * MBUS Units Prefetch Control Register - + * Pre-fetch enable for all IO masters. + */ + bus_space_write_4(fdtbus_bs_tag, vaddr_iowind, 0x8, 0xFFFF); + + /* + * Fabric Units Prefetch Control Register - + * Enable the CPUs Instruction and Data prefetch. + */ + bus_space_write_4(fdtbus_bs_tag, vaddr_iowind, 0xc, 0x303); + + bus_space_barrier(fdtbus_bs_tag, vaddr_iowind, 0, MV_MBUS_CTRL_REGS_LEN, + BUS_SPACE_BARRIER_WRITE); + + bus_space_unmap(fdtbus_bs_tag, vaddr_iowind, MV_MBUS_CTRL_REGS_LEN); + + return (rv); +} + +int armada38x_scu_enable(void) { bus_space_handle_t vaddr_scu; |