diff --git a/drivers/gpu/drm/i915/intel_uncore.c b/drivers/gpu/drm/i915/intel_uncore.c index 8ac684598cec..e2b188dcf908 100644 --- a/drivers/gpu/drm/i915/intel_uncore.c +++ b/drivers/gpu/drm/i915/intel_uncore.c @@ -26,7 +26,6 @@ #include "i915_vgpu.h" #include -#include #define FORCEWAKE_ACK_TIMEOUT_MS 50 @@ -582,11 +581,8 @@ void assert_forcewakes_inactive(struct drm_i915_private *dev_priv) __fwd; \ }) -static int fw_range_cmp(const void *key, const void *elt) +static int fw_range_cmp(u32 offset, const struct intel_forcewake_range *entry) { - const struct intel_forcewake_range *entry = elt; - u32 offset = (u32)((unsigned long)key); - if (offset < entry->start) return -1; else if (offset > entry->end) @@ -595,17 +591,33 @@ static int fw_range_cmp(const void *key, const void *elt) return 0; } +/* Copied and "macroized" from lib/bsearch.c */ +#define BSEARCH(key, base, num, cmp) ({ \ + unsigned int start__ = 0, end__ = (num); \ + typeof(base) result__ = NULL; \ + while (start__ < end__) { \ + unsigned int mid__ = start__ + (end__ - start__) / 2; \ + int ret__ = (cmp)((key), (base) + mid__); \ + if (ret__ < 0) { \ + end__ = mid__; \ + } else if (ret__ > 0) { \ + start__ = mid__ + 1; \ + } else { \ + result__ = (base) + mid__; \ + break; \ + } \ + } \ + result__; \ +}) + static enum forcewake_domains find_fw_domain(struct drm_i915_private *dev_priv, u32 offset) { - const struct intel_forcewake_range *table, *entry; - unsigned int num_entries; + const struct intel_forcewake_range *entry; - table = dev_priv->uncore.fw_domains_table; - num_entries = dev_priv->uncore.fw_domains_table_entries; - - entry = bsearch((void *)(unsigned long)offset, (const void *)table, - num_entries, sizeof(struct intel_forcewake_range), + entry = BSEARCH(offset, + dev_priv->uncore.fw_domains_table, + dev_priv->uncore.fw_domains_table_entries, fw_range_cmp); return entry ? entry->domains : 0; @@ -691,14 +703,13 @@ static void intel_shadow_table_check(void) } } -static int mmio_reg_cmp(const void *key, const void *elt) +static int mmio_reg_cmp(u32 key, const i915_reg_t *reg) { - u32 offset = (u32)(unsigned long)key; - i915_reg_t *reg = (i915_reg_t *)elt; + u32 offset = i915_mmio_reg_offset(*reg); - if (offset < i915_mmio_reg_offset(*reg)) + if (key < offset) return -1; - else if (offset > i915_mmio_reg_offset(*reg)) + else if (key > offset) return 1; else return 0; @@ -706,15 +717,10 @@ static int mmio_reg_cmp(const void *key, const void *elt) static bool is_gen8_shadowed(u32 offset) { - i915_reg_t *reg; + const i915_reg_t *regs = gen8_shadowed_regs; - reg = bsearch((void *)(unsigned long)offset, - (const void *)gen8_shadowed_regs, - ARRAY_SIZE(gen8_shadowed_regs), - sizeof(i915_reg_t), - mmio_reg_cmp); - - return reg; + return BSEARCH(offset, regs, ARRAY_SIZE(gen8_shadowed_regs), + mmio_reg_cmp); } #define __gen8_reg_write_fw_domains(offset) \